Ticket #6761: View.cpp

/*
 * Copyright 2001-2017 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *      Stephan Aßmus, superstippi@gmx.de
 *      Axel Dörfler, axeld@pinc-software.de
 *      Adrian Oanca, adioanca@cotty.iren.ro
 *      Ingo Weinhold. ingo_weinhold@gmx.de
 *      Julian Harnath, julian.harnath@rwth-aachen.de
 *      Joseph Groover, looncraz@looncraz.net
 */


#include <View.h>

#include <algorithm>
#include <new>

#include <math.h>
#include <stdio.h>

#include <Application.h>
#include <Bitmap.h>
#include <Button.h>
#include <Cursor.h>
#include <File.h>
#include <GradientLinear.h>
#include <GradientRadial.h>
#include <GradientRadialFocus.h>
#include <GradientDiamond.h>
#include <GradientConic.h>
#include <InterfaceDefs.h>
#include <Layout.h>
#include <LayoutContext.h>
#include <LayoutUtils.h>
#include <MenuBar.h>
#include <Message.h>
#include <MessageQueue.h>
#include <ObjectList.h>
#include <Picture.h>
#include <Point.h>
#include <Polygon.h>
#include <PropertyInfo.h>
#include <Region.h>
#include <ScrollBar.h>
#include <Shape.h>
#include <Shelf.h>
#include <String.h>
#include <Window.h>

#include <AppMisc.h>
#include <AppServerLink.h>
#include <binary_compatibility/Interface.h>
#include <binary_compatibility/Support.h>
#include <MessagePrivate.h>
#include <MessageUtils.h>
#include <PortLink.h>
#include <ServerProtocol.h>
#include <ServerProtocolStructs.h>
#include <ShapePrivate.h>
#include <ToolTip.h>
#include <ToolTipManager.h>
#include <TokenSpace.h>
#include <ViewPrivate.h>

using std::nothrow;

//#define DEBUG_BVIEW
#ifdef DEBUG_BVIEW
#   include <stdio.h>
#   define STRACE(x) printf x
#   define BVTRACE _PrintToStream()
#else
#   define STRACE(x) ;
#   define BVTRACE ;
#endif


static property_info sViewPropInfo[] = {
    { "Frame", { B_GET_PROPERTY, B_SET_PROPERTY },
        { B_DIRECT_SPECIFIER, 0 }, "The view's frame rectangle.", 0,
        { B_RECT_TYPE }
    },
    { "Hidden", { B_GET_PROPERTY, B_SET_PROPERTY },
        { B_DIRECT_SPECIFIER, 0 }, "Whether or not the view is hidden.",
        0, { B_BOOL_TYPE }
    },
    { "Shelf", { 0 },
        { B_DIRECT_SPECIFIER, 0 }, "Directs the scripting message to the "
            "shelf.", 0
    },
    { "View", { B_COUNT_PROPERTIES, 0 },
        { B_DIRECT_SPECIFIER, 0 }, "Returns the number of child views.", 0,
        { B_INT32_TYPE }
    },
    { "View", { 0 },
        { B_INDEX_SPECIFIER, B_REVERSE_INDEX_SPECIFIER, B_NAME_SPECIFIER, 0 },
        "Directs the scripting message to the specified view.", 0
    },

    { 0, { 0 }, { 0 }, 0, 0 }
};


//  #pragma mark -


static inline uint32
get_uint32_color(rgb_color color)
{
    return B_BENDIAN_TO_HOST_INT32(*(uint32*)&color);
        // rgb_color is always in rgba format, no matter what endian;
        // we always return the int32 value in host endian.
}


static inline rgb_color
get_rgb_color(uint32 value)
{
    value = B_HOST_TO_BENDIAN_INT32(value);
    return *(rgb_color*)&value;
}


//  #pragma mark -


namespace BPrivate {

ViewState::ViewState()
{
    pen_location.Set(0, 0);
    pen_size = 1.0;

    // NOTE: the clipping_region is empty
    // on construction but it is not used yet,
    // we avoid having to keep track of it via
    // this flag
    clipping_region_used = false;

    high_color = (rgb_color){ 0, 0, 0, 255 };
    low_color = (rgb_color){ 255, 255, 255, 255 };
    view_color = low_color;
    which_view_color = B_NO_COLOR;
    which_view_color_tint = B_NO_TINT;

    which_high_color = B_NO_COLOR;
    which_high_color_tint = B_NO_TINT;

    which_low_color = B_NO_COLOR;
    which_low_color_tint = B_NO_TINT;

    pattern = B_SOLID_HIGH;
    drawing_mode = B_OP_COPY;

    origin.Set(0, 0);

    line_join = B_MITER_JOIN;
    line_cap = B_BUTT_CAP;
    miter_limit = B_DEFAULT_MITER_LIMIT;
    fill_rule = B_NONZERO;

    alpha_source_mode = B_PIXEL_ALPHA;
    alpha_function_mode = B_ALPHA_OVERLAY;

    scale = 1.0;

    font = *be_plain_font;
    font_flags = font.Flags();
    font_aliasing = false;

    // We only keep the B_VIEW_CLIP_REGION_BIT flag invalidated,
    // because we should get the clipping region from app_server.
    // The other flags do not need to be included because the data they
    // represent is already in sync with app_server - app_server uses the
    // same init (default) values.
    valid_flags = ~B_VIEW_CLIP_REGION_BIT;

    archiving_flags = B_VIEW_FRAME_BIT | B_VIEW_RESIZE_BIT;
}


void
ViewState::UpdateServerFontState(BPrivate::PortLink &link)
{
    link.StartMessage(AS_VIEW_SET_FONT_STATE);
    link.Attach<uint16>(font_flags);
        // always present

    if (font_flags & B_FONT_FAMILY_AND_STYLE)
        link.Attach<uint32>(font.FamilyAndStyle());

    if (font_flags & B_FONT_SIZE)
        link.Attach<float>(font.Size());

    if (font_flags & B_FONT_SHEAR)
        link.Attach<float>(font.Shear());

    if (font_flags & B_FONT_ROTATION)
        link.Attach<float>(font.Rotation());

    if (font_flags & B_FONT_FALSE_BOLD_WIDTH)
        link.Attach<float>(font.FalseBoldWidth());

    if (font_flags & B_FONT_SPACING)
        link.Attach<uint8>(font.Spacing());

    if (font_flags & B_FONT_ENCODING)
        link.Attach<uint8>(font.Encoding());

    if (font_flags & B_FONT_FACE)
        link.Attach<uint16>(font.Face());

    if (font_flags & B_FONT_FLAGS)
        link.Attach<uint32>(font.Flags());
}


void
ViewState::UpdateServerState(BPrivate::PortLink &link)
{
    UpdateServerFontState(link);

    link.StartMessage(AS_VIEW_SET_STATE);

    ViewSetStateInfo info;
    info.penLocation = pen_location;
    info.penSize = pen_size;
    info.highColor = high_color;
    info.lowColor = low_color;
    info.whichHighColor = which_high_color;
    info.whichLowColor = which_low_color;
    info.whichHighColorTint = which_high_color_tint;
    info.whichLowColorTint = which_low_color_tint;
    info.pattern = pattern;
    info.drawingMode = drawing_mode;
    info.origin = origin;
    info.scale = scale;
    info.transform = transform;
    info.lineJoin = line_join;
    info.lineCap = line_cap;
    info.miterLimit = miter_limit;
    info.fillRule = fill_rule;
    info.alphaSourceMode = alpha_source_mode;
    info.alphaFunctionMode = alpha_function_mode;
    info.fontAntialiasing = font_aliasing;
    link.Attach<ViewSetStateInfo>(info);

    // we send the 'local' clipping region... if we have one...
    // TODO: Could be optimized, but is low prio, since most views won't
    // have a custom clipping region.
    if (clipping_region_used) {
        int32 count = clipping_region.CountRects();
        link.Attach<int32>(count);
        for (int32 i = 0; i < count; i++)
            link.Attach<BRect>(clipping_region.RectAt(i));
    } else {
        // no clipping region
        link.Attach<int32>(-1);
    }

    // Although we might have a 'local' clipping region, when we call
    // BView::GetClippingRegion() we ask for the 'global' one and it
    // is kept on server, so we must invalidate B_VIEW_CLIP_REGION_BIT flag

    valid_flags = ~B_VIEW_CLIP_REGION_BIT;
}


void
ViewState::UpdateFrom(BPrivate::PortLink &link)
{
    link.StartMessage(AS_VIEW_GET_STATE);

    int32 code;
    if (link.FlushWithReply(code) != B_OK
        || code != B_OK)
        return;

    ViewGetStateInfo info;
    link.Read<ViewGetStateInfo>(&info);

    // set view's font state
    font_flags = B_FONT_ALL;
    font.SetFamilyAndStyle(info.fontID);
    font.SetSize(info.fontSize);
    font.SetShear(info.fontShear);
    font.SetRotation(info.fontRotation);
    font.SetFalseBoldWidth(info.fontFalseBoldWidth);
    font.SetSpacing(info.fontSpacing);
    font.SetEncoding(info.fontEncoding);
    font.SetFace(info.fontFace);
    font.SetFlags(info.fontFlags);

    // set view's state
    pen_location = info.viewStateInfo.penLocation;
    pen_size = info.viewStateInfo.penSize;
    high_color = info.viewStateInfo.highColor;
    low_color = info.viewStateInfo.lowColor;
    pattern = info.viewStateInfo.pattern;
    drawing_mode = info.viewStateInfo.drawingMode;
    origin = info.viewStateInfo.origin;
    scale = info.viewStateInfo.scale;
    transform = info.viewStateInfo.transform;
    line_join = info.viewStateInfo.lineJoin;
    line_cap = info.viewStateInfo.lineCap;
    miter_limit = info.viewStateInfo.miterLimit;
    fill_rule = info.viewStateInfo.fillRule;
    alpha_source_mode = info.viewStateInfo.alphaSourceMode;
    alpha_function_mode = info.viewStateInfo.alphaFunctionMode;
    font_aliasing = info.viewStateInfo.fontAntialiasing;

    // read the user clipping
    // (that's NOT the current View visible clipping but the additional
    // user specified clipping!)
    int32 clippingRectCount;
    link.Read<int32>(&clippingRectCount);
    if (clippingRectCount >= 0) {
        clipping_region.MakeEmpty();
        for (int32 i = 0; i < clippingRectCount; i++) {
            BRect rect;
            link.Read<BRect>(&rect);
            clipping_region.Include(rect);
        }
    } else {
        // no user clipping used
        clipping_region_used = false;
    }

    valid_flags = ~B_VIEW_CLIP_REGION_BIT;
}

}   // namespace BPrivate


//  #pragma mark -


// archiving constants
namespace {
    const char* const kSizesField = "BView:sizes";
        // kSizesField = {min, max, pref}
    const char* const kAlignmentField = "BView:alignment";
    const char* const kLayoutField = "BView:layout";
}


struct BView::LayoutData {
    LayoutData()
        :
        fMinSize(),
        fMaxSize(),
        fPreferredSize(),
        fAlignment(),
        fLayoutInvalidationDisabled(0),
        fLayout(NULL),
        fLayoutContext(NULL),
        fLayoutItems(5, false),
        fLayoutValid(true),     // TODO: Rethink these initial values!
        fMinMaxValid(true),     //
        fLayoutInProgress(false),
        fNeedsRelayout(true)
    {
    }

    status_t
    AddDataToArchive(BMessage* archive)
    {
        status_t err = archive->AddSize(kSizesField, fMinSize);

        if (err == B_OK)
            err = archive->AddSize(kSizesField, fMaxSize);

        if (err == B_OK)
            err = archive->AddSize(kSizesField, fPreferredSize);

        if (err == B_OK)
            err = archive->AddAlignment(kAlignmentField, fAlignment);

        return err;
    }

    void
    PopulateFromArchive(BMessage* archive)
    {
        archive->FindSize(kSizesField, 0, &fMinSize);
        archive->FindSize(kSizesField, 1, &fMaxSize);
        archive->FindSize(kSizesField, 2, &fPreferredSize);
        archive->FindAlignment(kAlignmentField, &fAlignment);
    }

    BSize           fMinSize;
    BSize           fMaxSize;
    BSize           fPreferredSize;
    BAlignment      fAlignment;
    int             fLayoutInvalidationDisabled;
    BLayout*        fLayout;
    BLayoutContext* fLayoutContext;
    BObjectList<BLayoutItem> fLayoutItems;
    bool            fLayoutValid;
    bool            fMinMaxValid;
    bool            fLayoutInProgress;
    bool            fNeedsRelayout;
};


BView::BView(const char* name, uint32 flags, BLayout* layout)
    :
    BHandler(name)
{
    _InitData(BRect(0, 0, 0, 0), name, B_FOLLOW_NONE,
        flags | B_SUPPORTS_LAYOUT);
    SetLayout(layout);
}


BView::BView(BRect frame, const char* name, uint32 resizingMode, uint32 flags)
    :
    BHandler(name)
{
    _InitData(frame, name, resizingMode, flags);
}


BView::BView(BMessage* archive)
    :
    BHandler(BUnarchiver::PrepareArchive(archive))
{
    BUnarchiver unarchiver(archive);
    if (!archive)
        debugger("BView cannot be constructed from a NULL archive.");

    BRect frame;
    archive->FindRect("_frame", &frame);

    uint32 resizingMode;
    if (archive->FindInt32("_resize_mode", (int32*)&resizingMode) != B_OK)
        resizingMode = 0;

    uint32 flags;
    if (archive->FindInt32("_flags", (int32*)&flags) != B_OK)
        flags = 0;

    _InitData(frame, Name(), resizingMode, flags);

    font_family family;
    font_style style;
    if (archive->FindString("_fname", 0, (const char**)&family) == B_OK
        && archive->FindString("_fname", 1, (const char**)&style) == B_OK) {
        BFont font;
        font.SetFamilyAndStyle(family, style);

        float size;
        if (archive->FindFloat("_fflt", 0, &size) == B_OK)
            font.SetSize(size);

        float shear;
        if (archive->FindFloat("_fflt", 1, &shear) == B_OK
            && shear >= 45.0 && shear <= 135.0)
            font.SetShear(shear);

        float rotation;
        if (archive->FindFloat("_fflt", 2, &rotation) == B_OK
            && rotation >=0 && rotation <= 360)
            font.SetRotation(rotation);

        SetFont(&font, B_FONT_FAMILY_AND_STYLE | B_FONT_SIZE
            | B_FONT_SHEAR | B_FONT_ROTATION);
    }

    int32 color = 0;
    if (archive->FindInt32("_color", 0, &color) == B_OK)
        SetHighColor(get_rgb_color(color));
    if (archive->FindInt32("_color", 1, &color) == B_OK)
        SetLowColor(get_rgb_color(color));
    if (archive->FindInt32("_color", 2, &color) == B_OK)
        SetViewColor(get_rgb_color(color));

    float tint = B_NO_TINT;
    if (archive->FindInt32("_uicolor", 0, &color) == B_OK
        && color != B_NO_COLOR) {
        if (archive->FindFloat("_uitint", 0, &tint) != B_OK)
            tint = B_NO_TINT;

        SetHighUIColor((color_which)color, tint);
    }
    if (archive->FindInt32("_uicolor", 1, &color) == B_OK
        && color != B_NO_COLOR) {
        if (archive->FindFloat("_uitint", 1, &tint) != B_OK)
            tint = B_NO_TINT;

        SetLowUIColor((color_which)color, tint);
    }
    if (archive->FindInt32("_uicolor", 2, &color) == B_OK
        && color != B_NO_COLOR) {
        if (archive->FindFloat("_uitint", 2, &tint) != B_OK)
            tint = B_NO_TINT;

        SetViewUIColor((color_which)color, tint);
    }

    uint32 evMask;
    uint32 options;
    if (archive->FindInt32("_evmask", 0, (int32*)&evMask) == B_OK
        && archive->FindInt32("_evmask", 1, (int32*)&options) == B_OK)
        SetEventMask(evMask, options);

    BPoint origin;
    if (archive->FindPoint("_origin", &origin) == B_OK)
        SetOrigin(origin);

    float scale;
    if (archive->FindFloat("_scale", &scale) == B_OK)
        SetScale(scale);

    BAffineTransform transform;
    if (archive->FindFlat("_transform", &transform) == B_OK)
        SetTransform(transform);

    float penSize;
    if (archive->FindFloat("_psize", &penSize) == B_OK)
        SetPenSize(penSize);

    BPoint penLocation;
    if (archive->FindPoint("_ploc", &penLocation) == B_OK)
        MovePenTo(penLocation);

    int16 lineCap;
    int16 lineJoin;
    float lineMiter;
    if (archive->FindInt16("_lmcapjoin", 0, &lineCap) == B_OK
        && archive->FindInt16("_lmcapjoin", 1, &lineJoin) == B_OK
        && archive->FindFloat("_lmmiter", &lineMiter) == B_OK)
        SetLineMode((cap_mode)lineCap, (join_mode)lineJoin, lineMiter);

    int16 fillRule;
    if (archive->FindInt16("_fillrule", &fillRule) == B_OK)
        SetFillRule(fillRule);

    int16 alphaBlend;
    int16 modeBlend;
    if (archive->FindInt16("_blend", 0, &alphaBlend) == B_OK
        && archive->FindInt16("_blend", 1, &modeBlend) == B_OK)
        SetBlendingMode( (source_alpha)alphaBlend, (alpha_function)modeBlend);

    uint32 drawingMode;
    if (archive->FindInt32("_dmod", (int32*)&drawingMode) == B_OK)
        SetDrawingMode((drawing_mode)drawingMode);

    fLayoutData->PopulateFromArchive(archive);

    if (archive->FindInt16("_show", &fShowLevel) != B_OK)
        fShowLevel = 0;

    if (BUnarchiver::IsArchiveManaged(archive)) {
        int32 i = 0;
        while (unarchiver.EnsureUnarchived("_views", i++) == B_OK)
                ;
        unarchiver.EnsureUnarchived(kLayoutField);

    } else {
        BMessage msg;
        for (int32 i = 0; archive->FindMessage("_views", i, &msg) == B_OK;
            i++) {
            BArchivable* object = instantiate_object(&msg);
            if (BView* child = dynamic_cast<BView*>(object))
                AddChild(child);
        }
    }
}


BArchivable*
BView::Instantiate(BMessage* data)
{
    if (!validate_instantiation(data , "BView"))
        return NULL;

    return new(std::nothrow) BView(data);
}


status_t
BView::Archive(BMessage* data, bool deep) const
{
    BArchiver archiver(data);
    status_t ret = BHandler::Archive(data, deep);

    if (ret != B_OK)
        return ret;

    if ((fState->archiving_flags & B_VIEW_FRAME_BIT) != 0)
        ret = data->AddRect("_frame", Bounds().OffsetToCopy(fParentOffset));

    if (ret == B_OK)
        ret = data->AddInt32("_resize_mode", ResizingMode());

    if (ret == B_OK)
        ret = data->AddInt32("_flags", Flags());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_EVENT_MASK_BIT) != 0) {
        ret = data->AddInt32("_evmask", fEventMask);
        if (ret == B_OK)
            ret = data->AddInt32("_evmask", fEventOptions);
    }

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_FONT_BIT) != 0) {
        BFont font;
        GetFont(&font);

        font_family family;
        font_style style;
        font.GetFamilyAndStyle(&family, &style);
        ret = data->AddString("_fname", family);
        if (ret == B_OK)
            ret = data->AddString("_fname", style);
        if (ret == B_OK)
            ret = data->AddFloat("_fflt", font.Size());
        if (ret == B_OK)
            ret = data->AddFloat("_fflt", font.Shear());
        if (ret == B_OK)
            ret = data->AddFloat("_fflt", font.Rotation());
    }

    // colors
    if (ret == B_OK)
        ret = data->AddInt32("_color", get_uint32_color(HighColor()));
    if (ret == B_OK)
        ret = data->AddInt32("_color", get_uint32_color(LowColor()));
    if (ret == B_OK)
        ret = data->AddInt32("_color", get_uint32_color(ViewColor()));

    if (ret == B_OK)
        ret = data->AddInt32("_uicolor", (int32)HighUIColor());
    if (ret == B_OK)
        ret = data->AddInt32("_uicolor", (int32)LowUIColor());
    if (ret == B_OK)
        ret = data->AddInt32("_uicolor", (int32)ViewUIColor());

    if (ret == B_OK)
        ret = data->AddFloat("_uitint", fState->which_high_color_tint);
    if (ret == B_OK)
        ret = data->AddFloat("_uitint", fState->which_low_color_tint);
    if (ret == B_OK)
        ret = data->AddFloat("_uitint", fState->which_view_color_tint);

//  NOTE: we do not use this flag any more
//  if ( 1 ){
//      ret = data->AddInt32("_dbuf", 1);
//  }

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_ORIGIN_BIT) != 0)
        ret = data->AddPoint("_origin", Origin());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_SCALE_BIT) != 0)
        ret = data->AddFloat("_scale", Scale());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_TRANSFORM_BIT) != 0) {
        BAffineTransform transform = Transform();
        ret = data->AddFlat("_transform", &transform);
    }

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_PEN_SIZE_BIT) != 0)
        ret = data->AddFloat("_psize", PenSize());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_PEN_LOCATION_BIT) != 0)
        ret = data->AddPoint("_ploc", PenLocation());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_LINE_MODES_BIT) != 0) {
        ret = data->AddInt16("_lmcapjoin", (int16)LineCapMode());
        if (ret == B_OK)
            ret = data->AddInt16("_lmcapjoin", (int16)LineJoinMode());
        if (ret == B_OK)
            ret = data->AddFloat("_lmmiter", LineMiterLimit());
    }

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_FILL_RULE_BIT) != 0)
        ret = data->AddInt16("_fillrule", (int16)FillRule());

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_BLENDING_BIT) != 0) {
        source_alpha alphaSourceMode;
        alpha_function alphaFunctionMode;
        GetBlendingMode(&alphaSourceMode, &alphaFunctionMode);

        ret = data->AddInt16("_blend", (int16)alphaSourceMode);
        if (ret == B_OK)
            ret = data->AddInt16("_blend", (int16)alphaFunctionMode);
    }

    if (ret == B_OK && (fState->archiving_flags & B_VIEW_DRAWING_MODE_BIT) != 0)
        ret = data->AddInt32("_dmod", DrawingMode());

    if (ret == B_OK)
        ret = fLayoutData->AddDataToArchive(data);

    if (ret == B_OK)
        ret = data->AddInt16("_show", fShowLevel);

    if (deep && ret == B_OK) {
        for (BView* child = fFirstChild; child != NULL && ret == B_OK;
            child = child->fNextSibling)
            ret = archiver.AddArchivable("_views", child, deep);

        if (ret == B_OK)
            ret = archiver.AddArchivable(kLayoutField, GetLayout(), deep);
    }

    return archiver.Finish(ret);
}


status_t
BView::AllUnarchived(const BMessage* from)
{
    BUnarchiver unarchiver(from);
    status_t err = B_OK;

    int32 count;
    from->GetInfo("_views", NULL, &count);

    for (int32 i = 0; err == B_OK && i < count; i++) {
        BView* child;
        err = unarchiver.FindObject<BView>("_views", i, child);
        if (err == B_OK)
            err = _AddChild(child, NULL) ? B_OK : B_ERROR;
    }

    if (err == B_OK) {
        BLayout*& layout = fLayoutData->fLayout;
        err = unarchiver.FindObject(kLayoutField, layout);
        if (err == B_OK && layout) {
            fFlags |= B_SUPPORTS_LAYOUT;
            fLayoutData->fLayout->SetOwner(this);
        }
    }

    return err;
}


status_t
BView::AllArchived(BMessage* into) const
{
    return BHandler::AllArchived(into);
}


BView::~BView()
{
    STRACE(("BView(%s)::~BView()\n", this->Name()));

    if (fOwner != NULL) {
        debugger("Trying to delete a view that belongs to a window. "
            "Call RemoveSelf first.");
    }

    // we also delete all our children

    BView* child = fFirstChild;
    while (child) {
        BView* nextChild = child->fNextSibling;

        delete child;
        child = nextChild;
    }

    SetLayout(NULL);
    _RemoveLayoutItemsFromLayout(true);

    delete fLayoutData;

    _RemoveSelf();

    if (fToolTip != NULL)
        fToolTip->ReleaseReference();

    if (fVerScroller != NULL)
        fVerScroller->SetTarget((BView*)NULL);
    if (fHorScroller != NULL)
        fHorScroller->SetTarget((BView*)NULL);

    SetName(NULL);

    _RemoveCommArray();
    delete fState;
}


BRect
BView::Bounds() const
{
    _CheckLock();

    if (fIsPrinting)
        return fState->print_rect;

    return fBounds;
}


void
BView::_ConvertToParent(BPoint* point, bool checkLock) const
{
    if (!fParent)
        return;

    if (checkLock)
        _CheckLock();

    // - our scrolling offset
    // + our bounds location within the parent
    point->x += -fBounds.left + fParentOffset.x;
    point->y += -fBounds.top + fParentOffset.y;
}


void
BView::ConvertToParent(BPoint* point) const
{
    _ConvertToParent(point, true);
}


BPoint
BView::ConvertToParent(BPoint point) const
{
    ConvertToParent(&point);

    return point;
}


void
BView::_ConvertFromParent(BPoint* point, bool checkLock) const
{
    if (!fParent)
        return;

    if (checkLock)
        _CheckLock();

    // - our bounds location within the parent
    // + our scrolling offset
    point->x += -fParentOffset.x + fBounds.left;
    point->y += -fParentOffset.y + fBounds.top;
}


void
BView::ConvertFromParent(BPoint* point) const
{
    _ConvertFromParent(point, true);
}


BPoint
BView::ConvertFromParent(BPoint point) const
{
    ConvertFromParent(&point);

    return point;
}


void
BView::ConvertToParent(BRect* rect) const
{
    if (!fParent)
        return;

    _CheckLock();

    // - our scrolling offset
    // + our bounds location within the parent
    rect->OffsetBy(-fBounds.left + fParentOffset.x,
        -fBounds.top + fParentOffset.y);
}


BRect
BView::ConvertToParent(BRect rect) const
{
    ConvertToParent(&rect);

    return rect;
}


void
BView::ConvertFromParent(BRect* rect) const
{
    if (!fParent)
        return;

    _CheckLock();

    // - our bounds location within the parent
    // + our scrolling offset
    rect->OffsetBy(-fParentOffset.x + fBounds.left,
        -fParentOffset.y + fBounds.top);
}


BRect
BView::ConvertFromParent(BRect rect) const
{
    ConvertFromParent(&rect);

    return rect;
}


void
BView::_ConvertToScreen(BPoint* point, bool checkLock) const
{
    if (!fParent) {
        if (fOwner)
            fOwner->ConvertToScreen(point);

        return;
    }

    if (checkLock)
        _CheckOwnerLock();

    _ConvertToParent(point, false);
    fParent->_ConvertToScreen(point, false);
}


void
BView::ConvertToScreen(BPoint* point) const
{
    _ConvertToScreen(point, true);
}


BPoint
BView::ConvertToScreen(BPoint point) const
{
    ConvertToScreen(&point);

    return point;
}


void
BView::_ConvertFromScreen(BPoint* point, bool checkLock) const
{
    if (!fParent) {
        if (fOwner)
            fOwner->ConvertFromScreen(point);

        return;
    }

    if (checkLock)
        _CheckOwnerLock();

    _ConvertFromParent(point, false);
    fParent->_ConvertFromScreen(point, false);
}


void
BView::ConvertFromScreen(BPoint* point) const
{
    _ConvertFromScreen(point, true);
}


BPoint
BView::ConvertFromScreen(BPoint point) const
{
    ConvertFromScreen(&point);

    return point;
}


void
BView::ConvertToScreen(BRect* rect) const
{
    BPoint offset(0.0, 0.0);
    ConvertToScreen(&offset);
    rect->OffsetBy(offset);
}


BRect
BView::ConvertToScreen(BRect rect) const
{
    ConvertToScreen(&rect);

    return rect;
}


void
BView::ConvertFromScreen(BRect* rect) const
{
    BPoint offset(0.0, 0.0);
    ConvertFromScreen(&offset);
    rect->OffsetBy(offset);
}


BRect
BView::ConvertFromScreen(BRect rect) const
{
    ConvertFromScreen(&rect);

    return rect;
}


uint32
BView::Flags() const
{
    _CheckLock();
    return fFlags & ~_RESIZE_MASK_;
}


void
BView::SetFlags(uint32 flags)
{
    if (Flags() == flags)
        return;

    if (fOwner) {
        if (flags & B_PULSE_NEEDED) {
            _CheckLock();
            if (fOwner->fPulseRunner == NULL)
                fOwner->SetPulseRate(fOwner->PulseRate());
        }

        uint32 changesFlags = flags ^ fFlags;
        if (changesFlags & (B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE
                | B_FRAME_EVENTS | B_SUBPIXEL_PRECISE)) {
            _CheckLockAndSwitchCurrent();

            fOwner->fLink->StartMessage(AS_VIEW_SET_FLAGS);
            fOwner->fLink->Attach<uint32>(flags);
            fOwner->fLink->Flush();
        }
    }

    /* Some useful info:
        fFlags is a unsigned long (32 bits)
        * bits 1-16 are used for BView's flags
        * bits 17-32 are used for BView' resize mask
        * _RESIZE_MASK_ is used for that. Look into View.h to see how
            it's defined
    */
    fFlags = (flags & ~_RESIZE_MASK_) | (fFlags & _RESIZE_MASK_);

    fState->archiving_flags |= B_VIEW_FLAGS_BIT;
}


BRect
BView::Frame() const
{
    return Bounds().OffsetToCopy(fParentOffset.x, fParentOffset.y);
}


void
BView::Hide()
{
    if (fOwner && fShowLevel == 0) {
        _CheckLockAndSwitchCurrent();
        fOwner->fLink->StartMessage(AS_VIEW_HIDE);
        fOwner->fLink->Flush();
    }
    fShowLevel++;

    if (fShowLevel == 1)
        _InvalidateParentLayout();
}


void
BView::Show()
{
    fShowLevel--;
    if (fOwner && fShowLevel == 0) {
        _CheckLockAndSwitchCurrent();
        fOwner->fLink->StartMessage(AS_VIEW_SHOW);
        fOwner->fLink->Flush();
    }

    if (fShowLevel == 0)
        _InvalidateParentLayout();
}


bool
BView::IsFocus() const
{
    if (fOwner) {
        _CheckLock();
        return fOwner->CurrentFocus() == this;
    } else
        return false;
}


bool
BView::IsHidden(const BView* lookingFrom) const
{
    if (fShowLevel > 0)
        return true;

    // may we be egocentric?
    if (lookingFrom == this)
        return false;

    // we have the same visibility state as our
    // parent, if there is one
    if (fParent)
        return fParent->IsHidden(lookingFrom);

    // if we're the top view, and we're interested
    // in the "global" view, we're inheriting the
    // state of the window's visibility
    if (fOwner && lookingFrom == NULL)
        return fOwner->IsHidden();

    return false;
}


bool
BView::IsHidden() const
{
    return IsHidden(NULL);
}


bool
BView::IsPrinting() const
{
    return fIsPrinting;
}


BPoint
BView::LeftTop() const
{
    return Bounds().LeftTop();
}


void
BView::SetResizingMode(uint32 mode)
{
    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_RESIZE_MODE);
        fOwner->fLink->Attach<uint32>(mode);
    }

    // look at SetFlags() for more info on the below line
    fFlags = (fFlags & ~_RESIZE_MASK_) | (mode & _RESIZE_MASK_);
}


uint32
BView::ResizingMode() const
{
    return fFlags & _RESIZE_MASK_;
}


void
BView::SetViewCursor(const BCursor* cursor, bool sync)
{
    if (cursor == NULL || fOwner == NULL)
        return;

    _CheckLock();

    ViewSetViewCursorInfo info;
    info.cursorToken = cursor->fServerToken;
    info.viewToken = _get_object_token_(this);
    info.sync = sync;

    BPrivate::AppServerLink link;
    link.StartMessage(AS_SET_VIEW_CURSOR);
    link.Attach<ViewSetViewCursorInfo>(info);

    if (sync) {
        // Make sure the server has processed the message.
        int32 code;
        link.FlushWithReply(code);
    }
}


void
BView::Flush() const
{
    if (fOwner)
        fOwner->Flush();
}


void
BView::Sync() const
{
    _CheckOwnerLock();
    if (fOwner)
        fOwner->Sync();
}


BWindow*
BView::Window() const
{
    return fOwner;
}


//  #pragma mark - Hook Functions


void
BView::AttachedToWindow()
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::AttachedToWindow()\n", Name()));
}


void
BView::AllAttached()
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::AllAttached()\n", Name()));
}


void
BView::DetachedFromWindow()
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::DetachedFromWindow()\n", Name()));
}


void
BView::AllDetached()
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::AllDetached()\n", Name()));
}


void
BView::Draw(BRect updateRect)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::Draw()\n", Name()));
}


void
BView::DrawAfterChildren(BRect updateRect)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::DrawAfterChildren()\n", Name()));
}


void
BView::FrameMoved(BPoint newPosition)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::FrameMoved()\n", Name()));
}


void
BView::FrameResized(float newWidth, float newHeight)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::FrameResized()\n", Name()));
}


void
BView::GetPreferredSize(float* _width, float* _height)
{
    STRACE(("\tHOOK: BView(%s)::GetPreferredSize()\n", Name()));

    if (_width != NULL)
        *_width = fBounds.Width();
    if (_height != NULL)
        *_height = fBounds.Height();
}


void
BView::ResizeToPreferred()
{
    STRACE(("\tHOOK: BView(%s)::ResizeToPreferred()\n", Name()));

    float width;
    float height;
    GetPreferredSize(&width, &height);

    ResizeTo(width, height);
}


void
BView::KeyDown(const char* bytes, int32 numBytes)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::KeyDown()\n", Name()));

    if (Window())
        Window()->_KeyboardNavigation();
}


void
BView::KeyUp(const char* bytes, int32 numBytes)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::KeyUp()\n", Name()));
}


void
BView::MouseDown(BPoint where)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::MouseDown()\n", Name()));
}


void
BView::MouseUp(BPoint where)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::MouseUp()\n", Name()));
}


void
BView::MouseMoved(BPoint where, uint32 code, const BMessage* dragMessage)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::MouseMoved()\n", Name()));
}


void
BView::Pulse()
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::Pulse()\n", Name()));
}


void
BView::TargetedByScrollView(BScrollView* scroll_view)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::TargetedByScrollView()\n", Name()));
}


void
BView::WindowActivated(bool active)
{
    // Hook function
    STRACE(("\tHOOK: BView(%s)::WindowActivated()\n", Name()));
}


//  #pragma mark - Input Functions


void
BView::BeginRectTracking(BRect startRect, uint32 style)
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_BEGIN_RECT_TRACK);
        fOwner->fLink->Attach<BRect>(startRect);
        fOwner->fLink->Attach<uint32>(style);
        fOwner->fLink->Flush();
    }
}


void
BView::EndRectTracking()
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_END_RECT_TRACK);
        fOwner->fLink->Flush();
    }
}


void
BView::DragMessage(BMessage* message, BRect dragRect, BHandler* replyTo)
{
    if (!message)
        return;

    _CheckOwnerLock();

    // calculate the offset
    BPoint offset;
    uint32 buttons;
    BMessage* current = fOwner->CurrentMessage();
    if (!current || current->FindPoint("be:view_where", &offset) != B_OK)
        GetMouse(&offset, &buttons, false);
    offset -= dragRect.LeftTop();

    if (!dragRect.IsValid()) {
        DragMessage(message, NULL, B_OP_BLEND, offset, replyTo);
        return;
    }

    // TODO: that's not really what should happen - the app_server should take
    // the chance *NOT* to need to drag a whole bitmap around but just a frame.

    // create a drag bitmap for the rect
    BBitmap* bitmap = new(std::nothrow) BBitmap(dragRect, B_RGBA32);
    if (bitmap == NULL)
        return;

    uint32* bits = (uint32*)bitmap->Bits();
    uint32 bytesPerRow = bitmap->BytesPerRow();
    uint32 width = dragRect.IntegerWidth() + 1;
    uint32 height = dragRect.IntegerHeight() + 1;
    uint32 lastRow = (height - 1) * width;

    memset(bits, 0x00, height * bytesPerRow);

    // top
    for (uint32 i = 0; i < width; i += 2)
        bits[i] = 0xff000000;

    // bottom
    for (uint32 i = (height % 2 == 0 ? 1 : 0); i < width; i += 2)
        bits[lastRow + i] = 0xff000000;

    // left
    for (uint32 i = 0; i < lastRow; i += width * 2)
        bits[i] = 0xff000000;

    // right
    for (uint32 i = (width % 2 == 0 ? width : 0); i < lastRow; i += width * 2)
        bits[width - 1 + i] = 0xff000000;

    DragMessage(message, bitmap, B_OP_BLEND, offset, replyTo);
}


void
BView::DragMessage(BMessage* message, BBitmap* image, BPoint offset,
    BHandler* replyTo)
{
    DragMessage(message, image, B_OP_COPY, offset, replyTo);
}


void
BView::DragMessage(BMessage* message, BBitmap* image,
    drawing_mode dragMode, BPoint offset, BHandler* replyTo)
{
    if (message == NULL)
        return;

    if (image == NULL) {
        // TODO: workaround for drags without a bitmap - should not be necessary if
        //  we move the rectangle dragging into the app_server
        image = new(std::nothrow) BBitmap(BRect(0, 0, 0, 0), B_RGBA32);
        if (image == NULL)
            return;
    }

    if (replyTo == NULL)
        replyTo = this;

    if (replyTo->Looper() == NULL)
        debugger("DragMessage: warning - the Handler needs a looper");

    _CheckOwnerLock();

    if (!message->HasInt32("buttons")) {
        BMessage* msg = fOwner->CurrentMessage();
        uint32 buttons;

        if (msg == NULL
            || msg->FindInt32("buttons", (int32*)&buttons) != B_OK) {
            BPoint point;
            GetMouse(&point, &buttons, false);
        }

        message->AddInt32("buttons", buttons);
    }

    BMessage::Private privateMessage(message);
    privateMessage.SetReply(BMessenger(replyTo, replyTo->Looper()));

    int32 bufferSize = message->FlattenedSize();
    char* buffer = new(std::nothrow) char[bufferSize];
    if (buffer != NULL) {
        message->Flatten(buffer, bufferSize);

        fOwner->fLink->StartMessage(AS_VIEW_DRAG_IMAGE);
        fOwner->fLink->Attach<int32>(image->_ServerToken());
        fOwner->fLink->Attach<int32>((int32)dragMode);
        fOwner->fLink->Attach<BPoint>(offset);
        fOwner->fLink->Attach<int32>(bufferSize);
        fOwner->fLink->Attach(buffer, bufferSize);

        // we need to wait for the server
        // to actually process this message
        // before we can delete the bitmap
        int32 code;
        fOwner->fLink->FlushWithReply(code);

        delete [] buffer;
    } else {
        fprintf(stderr, "BView::DragMessage() - no memory to flatten drag "
            "message\n");
    }

    delete image;
}


void
BView::GetMouse(BPoint* _location, uint32* _buttons, bool checkMessageQueue)
{
    if (_location == NULL && _buttons == NULL)
        return;

    _CheckOwnerLockAndSwitchCurrent();

    uint32 eventOptions = fEventOptions | fMouseEventOptions;
    bool noHistory = eventOptions & B_NO_POINTER_HISTORY;
    bool fullHistory = eventOptions & B_FULL_POINTER_HISTORY;

    if (checkMessageQueue && !noHistory) {
        Window()->UpdateIfNeeded();
        BMessageQueue* queue = Window()->MessageQueue();
        queue->Lock();

        // Look out for mouse update messages

        BMessage* message;
        for (int32 i = 0; (message = queue->FindMessage(i)) != NULL; i++) {
            switch (message->what) {
                case B_MOUSE_MOVED:
                case B_MOUSE_UP:
                case B_MOUSE_DOWN:
                    bool deleteMessage;
                    if (!Window()->_StealMouseMessage(message, deleteMessage))
                        continue;

                    if (!fullHistory && message->what == B_MOUSE_MOVED) {
                        // Check if the message is too old. Some applications
                        // check the message queue in such a way that mouse
                        // messages *must* pile up. This check makes them work
                        // as intended, although these applications could simply
                        // use the version of BView::GetMouse() that does not
                        // check the history. Also note that it isn't a problem
                        // to delete the message in case there is not a newer
                        // one. If we don't find a message in the queue, we will
                        // just fall back to asking the app_sever directly. So
                        // the imposed delay will not be a problem on slower
                        // computers. This check also prevents another problem,
                        // when the message that we use is *not* removed from
                        // the queue. Subsequent calls to GetMouse() would find
                        // this message over and over!
                        bigtime_t eventTime;
                        if (message->FindInt64("when", &eventTime) == B_OK
                            && system_time() - eventTime > 10000) {
                            // just discard the message
                            if (deleteMessage)
                                delete message;
                            continue;
                        }
                    }
                    if (_location != NULL)
                        message->FindPoint("screen_where", _location);
                    if (_buttons != NULL)
                        message->FindInt32("buttons", (int32*)_buttons);
                    queue->Unlock();
                        // we need to hold the queue lock until here, because
                        // the message might still be used for something else

                    if (_location != NULL)
                        ConvertFromScreen(_location);

                    if (deleteMessage)
                        delete message;

                    return;
            }
        }
        queue->Unlock();
    }

    // If no mouse update message has been found in the message queue,
    // we get the current mouse location and buttons from the app_server

    fOwner->fLink->StartMessage(AS_GET_MOUSE);

    int32 code;
    if (fOwner->fLink->FlushWithReply(code) == B_OK
        && code == B_OK) {
        BPoint location;
        uint32 buttons;
        fOwner->fLink->Read<BPoint>(&location);
        fOwner->fLink->Read<uint32>(&buttons);
            // TODO: ServerWindow replies with an int32 here

        ConvertFromScreen(&location);
            // TODO: in beos R5, location is already converted to the view
            // local coordinate system, so if an app checks the window message
            // queue by itself, it might not find what it expects.
            // NOTE: the fact that we have mouse coords in screen space in our
            // queue avoids the problem that messages already in the queue will
            // be outdated as soon as a window or even the view moves. The
            // second situation being quite common actually, also with regards
            // to scrolling. An app reading these messages would have to know
            // the locations of the window and view for each message...
            // otherwise it is potentially broken anyways.
        if (_location != NULL)
            *_location = location;
        if (_buttons != NULL)
            *_buttons = buttons;
    } else {
        if (_location != NULL)
            _location->Set(0, 0);
        if (_buttons != NULL)
            *_buttons = 0;
    }
}


void
BView::MakeFocus(bool focus)
{
    if (fOwner == NULL)
        return;

    // TODO: If this view has focus and focus == false,
    // will there really be no other view with focus? No
    // cycling to the next one?
    BView* focusView = fOwner->CurrentFocus();
    if (focus) {
        // Unfocus a previous focus view
        if (focusView != NULL && focusView != this)
            focusView->MakeFocus(false);

        // if we want to make this view the current focus view
        fOwner->_SetFocus(this, true);
    } else {
        // we want to unfocus this view, but only if it actually has focus
        if (focusView == this)
            fOwner->_SetFocus(NULL, true);
    }
}


BScrollBar*
BView::ScrollBar(orientation direction) const
{
    switch (direction) {
        case B_VERTICAL:
            return fVerScroller;

        case B_HORIZONTAL:
            return fHorScroller;

        default:
            return NULL;
    }
}


void
BView::ScrollBy(float deltaX, float deltaY)
{
    ScrollTo(BPoint(fBounds.left + deltaX, fBounds.top + deltaY));
}


void
BView::ScrollTo(BPoint where)
{
    // scrolling by fractional values is not supported
    where.x = roundf(where.x);
    where.y = roundf(where.y);

    // no reason to process this further if no scroll is intended.
    if (where.x == fBounds.left && where.y == fBounds.top)
        return;

    // make sure scrolling is within valid bounds
    if (fHorScroller) {
        float min, max;
        fHorScroller->GetRange(&min, &max);

        if (where.x < min)
            where.x = min;
        else if (where.x > max)
            where.x = max;
    }
    if (fVerScroller) {
        float min, max;
        fVerScroller->GetRange(&min, &max);

        if (where.y < min)
            where.y = min;
        else if (where.y > max)
            where.y = max;
    }

    _CheckLockAndSwitchCurrent();

    float xDiff = where.x - fBounds.left;
    float yDiff = where.y - fBounds.top;

    // if we're attached to a window tell app_server about this change
    if (fOwner) {
        fOwner->fLink->StartMessage(AS_VIEW_SCROLL);
        fOwner->fLink->Attach<float>(xDiff);
        fOwner->fLink->Attach<float>(yDiff);

        fOwner->fLink->Flush();

//      fState->valid_flags &= ~B_VIEW_FRAME_BIT;
    }

    // we modify our bounds rectangle by deltaX/deltaY coord units hor/ver.
    fBounds.OffsetTo(where.x, where.y);

    // then set the new values of the scrollbars
    if (fHorScroller && xDiff != 0.0)
        fHorScroller->SetValue(fBounds.left);
    if (fVerScroller && yDiff != 0.0)
        fVerScroller->SetValue(fBounds.top);

}


status_t
BView::SetEventMask(uint32 mask, uint32 options)
{
    if (fEventMask == mask && fEventOptions == options)
        return B_OK;

    // don't change the mask if it's zero and we've got options
    if (mask != 0 || options == 0)
        fEventMask = mask | (fEventMask & 0xffff0000);
    fEventOptions = options;

    fState->archiving_flags |= B_VIEW_EVENT_MASK_BIT;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_EVENT_MASK);
        fOwner->fLink->Attach<uint32>(mask);
        fOwner->fLink->Attach<uint32>(options);
        fOwner->fLink->Flush();
    }

    return B_OK;
}


uint32
BView::EventMask()
{
    return fEventMask;
}


status_t
BView::SetMouseEventMask(uint32 mask, uint32 options)
{
    // Just don't do anything if the view is not yet attached
    // or we were called outside of BView::MouseDown()
    if (fOwner != NULL
        && fOwner->CurrentMessage() != NULL
        && fOwner->CurrentMessage()->what == B_MOUSE_DOWN) {
        _CheckLockAndSwitchCurrent();
        fMouseEventOptions = options;

        fOwner->fLink->StartMessage(AS_VIEW_SET_MOUSE_EVENT_MASK);
        fOwner->fLink->Attach<uint32>(mask);
        fOwner->fLink->Attach<uint32>(options);
        fOwner->fLink->Flush();
        return B_OK;
    }

    return B_ERROR;
}


//  #pragma mark - Graphic State Functions


void
BView::PushState()
{
    _CheckOwnerLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_PUSH_STATE);

    // initialize origin, scale and transform, new states start "clean".
    fState->valid_flags |= B_VIEW_SCALE_BIT | B_VIEW_ORIGIN_BIT
        | B_VIEW_TRANSFORM_BIT;
    fState->scale = 1.0f;
    fState->origin.Set(0, 0);
    fState->transform.Reset();
}


void
BView::PopState()
{
    _CheckOwnerLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_POP_STATE);
    _FlushIfNotInTransaction();

    // invalidate all flags (except those that are not part of pop/push)
    fState->valid_flags = B_VIEW_VIEW_COLOR_BIT;
}


void
BView::SetOrigin(BPoint where)
{
    SetOrigin(where.x, where.y);
}


void
BView::SetOrigin(float x, float y)
{
    if (fState->IsValid(B_VIEW_ORIGIN_BIT)
        && x == fState->origin.x && y == fState->origin.y)
        return;

    fState->origin.x = x;
    fState->origin.y = y;

    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_SET_ORIGIN);
        fOwner->fLink->Attach<float>(x);
        fOwner->fLink->Attach<float>(y);

        fState->valid_flags |= B_VIEW_ORIGIN_BIT;
    }

    // our local coord system origin has changed, so when archiving we'll add
    // this too
    fState->archiving_flags |= B_VIEW_ORIGIN_BIT;
}


BPoint
BView::Origin() const
{
    if (!fState->IsValid(B_VIEW_ORIGIN_BIT)) {
        // we don't keep graphics state information, therefor
        // we need to ask the server for the origin after PopState()
        _CheckOwnerLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_ORIGIN);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
            fOwner->fLink->Read<BPoint>(&fState->origin);

        fState->valid_flags |= B_VIEW_ORIGIN_BIT;
    }

    return fState->origin;
}


void
BView::SetScale(float scale) const
{
    if (fState->IsValid(B_VIEW_SCALE_BIT) && scale == fState->scale)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_SCALE);
        fOwner->fLink->Attach<float>(scale);

        fState->valid_flags |= B_VIEW_SCALE_BIT;
    }

    fState->scale = scale;
    fState->archiving_flags |= B_VIEW_SCALE_BIT;
}


float
BView::Scale() const
{
    if (!fState->IsValid(B_VIEW_SCALE_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_SCALE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
            fOwner->fLink->Read<float>(&fState->scale);

        fState->valid_flags |= B_VIEW_SCALE_BIT;
    }

    return fState->scale;
}


void
BView::SetTransform(BAffineTransform transform)
{
    if (fState->IsValid(B_VIEW_TRANSFORM_BIT) && transform == fState->transform)
        return;

    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_TRANSFORM);
        fOwner->fLink->Attach<BAffineTransform>(transform);

        fState->valid_flags |= B_VIEW_TRANSFORM_BIT;
    }

    fState->transform = transform;
    fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}


BAffineTransform
BView::Transform() const
{
    if (!fState->IsValid(B_VIEW_TRANSFORM_BIT) && fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_TRANSFORM);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK)
            fOwner->fLink->Read<BAffineTransform>(&fState->transform);

        fState->valid_flags |= B_VIEW_TRANSFORM_BIT;
    }

    return fState->transform;
}


void
BView::TranslateBy(double x, double y)
{
    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_AFFINE_TRANSLATE);
        fOwner->fLink->Attach<double>(x);
        fOwner->fLink->Attach<double>(y);

        fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
    }

    fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}


void
BView::ScaleBy(double x, double y)
{
    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_AFFINE_SCALE);
        fOwner->fLink->Attach<double>(x);
        fOwner->fLink->Attach<double>(y);

        fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
    }

    fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}


void
BView::RotateBy(double angleRadians)
{
    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_AFFINE_ROTATE);
        fOwner->fLink->Attach<double>(angleRadians);

        fState->valid_flags &= ~B_VIEW_TRANSFORM_BIT;
    }

    fState->archiving_flags |= B_VIEW_TRANSFORM_BIT;
}


void
BView::SetLineMode(cap_mode lineCap, join_mode lineJoin, float miterLimit)
{
    if (fState->IsValid(B_VIEW_LINE_MODES_BIT)
        && lineCap == fState->line_cap && lineJoin == fState->line_join
        && miterLimit == fState->miter_limit)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        ViewSetLineModeInfo info;
        info.lineJoin = lineJoin;
        info.lineCap = lineCap;
        info.miterLimit = miterLimit;

        fOwner->fLink->StartMessage(AS_VIEW_SET_LINE_MODE);
        fOwner->fLink->Attach<ViewSetLineModeInfo>(info);

        fState->valid_flags |= B_VIEW_LINE_MODES_BIT;
    }

    fState->line_cap = lineCap;
    fState->line_join = lineJoin;
    fState->miter_limit = miterLimit;

    fState->archiving_flags |= B_VIEW_LINE_MODES_BIT;
}


join_mode
BView::LineJoinMode() const
{
    // This will update the current state, if necessary
    if (!fState->IsValid(B_VIEW_LINE_MODES_BIT))
        LineMiterLimit();

    return fState->line_join;
}


cap_mode
BView::LineCapMode() const
{
    // This will update the current state, if necessary
    if (!fState->IsValid(B_VIEW_LINE_MODES_BIT))
        LineMiterLimit();

    return fState->line_cap;
}


float
BView::LineMiterLimit() const
{
    if (!fState->IsValid(B_VIEW_LINE_MODES_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_LINE_MODE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {

            ViewSetLineModeInfo info;
            fOwner->fLink->Read<ViewSetLineModeInfo>(&info);

            fState->line_cap = info.lineCap;
            fState->line_join = info.lineJoin;
            fState->miter_limit = info.miterLimit;
        }

        fState->valid_flags |= B_VIEW_LINE_MODES_BIT;
    }

    return fState->miter_limit;
}


void
BView::SetFillRule(int32 fillRule)
{
    if (fState->IsValid(B_VIEW_FILL_RULE_BIT) && fillRule == fState->fill_rule)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_FILL_RULE);
        fOwner->fLink->Attach<int32>(fillRule);

        fState->valid_flags |= B_VIEW_FILL_RULE_BIT;
    }

    fState->fill_rule = fillRule;

    fState->archiving_flags |= B_VIEW_FILL_RULE_BIT;
}


int32
BView::FillRule() const
{
    if (!fState->IsValid(B_VIEW_FILL_RULE_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_FILL_RULE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {

            int32 fillRule;
            fOwner->fLink->Read<int32>(&fillRule);

            fState->fill_rule = fillRule;
        }

        fState->valid_flags |= B_VIEW_FILL_RULE_BIT;
    }

    return fState->fill_rule;
}


void
BView::SetDrawingMode(drawing_mode mode)
{
    if (fState->IsValid(B_VIEW_DRAWING_MODE_BIT)
        && mode == fState->drawing_mode)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_DRAWING_MODE);
        fOwner->fLink->Attach<int8>((int8)mode);

        fState->valid_flags |= B_VIEW_DRAWING_MODE_BIT;
    }

    fState->drawing_mode = mode;
    fState->archiving_flags |= B_VIEW_DRAWING_MODE_BIT;
}


drawing_mode
BView::DrawingMode() const
{
    if (!fState->IsValid(B_VIEW_DRAWING_MODE_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_DRAWING_MODE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            int8 drawingMode;
            fOwner->fLink->Read<int8>(&drawingMode);

            fState->drawing_mode = (drawing_mode)drawingMode;
            fState->valid_flags |= B_VIEW_DRAWING_MODE_BIT;
        }
    }

    return fState->drawing_mode;
}


void
BView::SetBlendingMode(source_alpha sourceAlpha, alpha_function alphaFunction)
{
    if (fState->IsValid(B_VIEW_BLENDING_BIT)
        && sourceAlpha == fState->alpha_source_mode
        && alphaFunction == fState->alpha_function_mode)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        ViewBlendingModeInfo info;
        info.sourceAlpha = sourceAlpha;
        info.alphaFunction = alphaFunction;

        fOwner->fLink->StartMessage(AS_VIEW_SET_BLENDING_MODE);
        fOwner->fLink->Attach<ViewBlendingModeInfo>(info);

        fState->valid_flags |= B_VIEW_BLENDING_BIT;
    }

    fState->alpha_source_mode = sourceAlpha;
    fState->alpha_function_mode = alphaFunction;

    fState->archiving_flags |= B_VIEW_BLENDING_BIT;
}


void
BView::GetBlendingMode(source_alpha* _sourceAlpha,
    alpha_function* _alphaFunction) const
{
    if (!fState->IsValid(B_VIEW_BLENDING_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_BLENDING_MODE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK && code == B_OK) {
            ViewBlendingModeInfo info;
            fOwner->fLink->Read<ViewBlendingModeInfo>(&info);

            fState->alpha_source_mode = info.sourceAlpha;
            fState->alpha_function_mode = info.alphaFunction;

            fState->valid_flags |= B_VIEW_BLENDING_BIT;
        }
    }

    if (_sourceAlpha)
        *_sourceAlpha = fState->alpha_source_mode;

    if (_alphaFunction)
        *_alphaFunction = fState->alpha_function_mode;
}


void
BView::MovePenTo(BPoint point)
{
    MovePenTo(point.x, point.y);
}


void
BView::MovePenTo(float x, float y)
{
    if (fState->IsValid(B_VIEW_PEN_LOCATION_BIT)
        && x == fState->pen_location.x && y == fState->pen_location.y)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_PEN_LOC);
        fOwner->fLink->Attach<BPoint>(BPoint(x, y));

        fState->valid_flags |= B_VIEW_PEN_LOCATION_BIT;
    }

    fState->pen_location.x = x;
    fState->pen_location.y = y;

    fState->archiving_flags |= B_VIEW_PEN_LOCATION_BIT;
}


void
BView::MovePenBy(float x, float y)
{
    // this will update the pen location if necessary
    if (!fState->IsValid(B_VIEW_PEN_LOCATION_BIT))
        PenLocation();

    MovePenTo(fState->pen_location.x + x, fState->pen_location.y + y);
}


BPoint
BView::PenLocation() const
{
    if (!fState->IsValid(B_VIEW_PEN_LOCATION_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_PEN_LOC);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<BPoint>(&fState->pen_location);

            fState->valid_flags |= B_VIEW_PEN_LOCATION_BIT;
        }
    }

    return fState->pen_location;
}


void
BView::SetPenSize(float size)
{
    if (fState->IsValid(B_VIEW_PEN_SIZE_BIT) && size == fState->pen_size)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_PEN_SIZE);
        fOwner->fLink->Attach<float>(size);

        fState->valid_flags |= B_VIEW_PEN_SIZE_BIT;
    }

    fState->pen_size = size;
    fState->archiving_flags |= B_VIEW_PEN_SIZE_BIT;
}


float
BView::PenSize() const
{
    if (!fState->IsValid(B_VIEW_PEN_SIZE_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_PEN_SIZE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<float>(&fState->pen_size);

            fState->valid_flags |= B_VIEW_PEN_SIZE_BIT;
        }
    }

    return fState->pen_size;
}


void
BView::SetHighColor(rgb_color color)
{
    SetHighUIColor(B_NO_COLOR);

    // are we up-to-date already?
    if (fState->IsValid(B_VIEW_HIGH_COLOR_BIT)
        && fState->high_color == color)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_HIGH_COLOR);
        fOwner->fLink->Attach<rgb_color>(color);

        fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
    }

    fState->high_color = color;

    fState->archiving_flags |= B_VIEW_HIGH_COLOR_BIT;
}


rgb_color
BView::HighColor() const
{
    if (!fState->IsValid(B_VIEW_HIGH_COLOR_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_HIGH_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<rgb_color>(&fState->high_color);

            fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
        }
    }

    return fState->high_color;
}


void
BView::SetHighUIColor(color_which which, float tint)
{
    if (fState->IsValid(B_VIEW_WHICH_HIGH_COLOR_BIT)
        && fState->which_high_color == which
        && fState->which_high_color_tint == tint)
        return;

    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_HIGH_UI_COLOR);
        fOwner->fLink->Attach<color_which>(which);
        fOwner->fLink->Attach<float>(tint);

        fState->valid_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
    }

    fState->which_high_color = which;
    fState->which_high_color_tint = tint;

    if (which != B_NO_COLOR) {
        fState->archiving_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_HIGH_COLOR_BIT;
        fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;

        fState->high_color = tint_color(ui_color(which), tint);
    } else {
        fState->valid_flags &= ~B_VIEW_HIGH_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_WHICH_HIGH_COLOR_BIT;
    }
}


color_which
BView::HighUIColor(float* tint) const
{
    if (!fState->IsValid(B_VIEW_WHICH_HIGH_COLOR_BIT)
        && fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_HIGH_UI_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<color_which>(&fState->which_high_color);
            fOwner->fLink->Read<float>(&fState->which_high_color_tint);
            fOwner->fLink->Read<rgb_color>(&fState->high_color);

            fState->valid_flags |= B_VIEW_WHICH_HIGH_COLOR_BIT;
            fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
        }
    }

    if (tint != NULL)
        *tint = fState->which_high_color_tint;

    return fState->which_high_color;
}


void
BView::SetLowColor(rgb_color color)
{
    SetLowUIColor(B_NO_COLOR);

    if (fState->IsValid(B_VIEW_LOW_COLOR_BIT)
        && fState->low_color == color)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_LOW_COLOR);
        fOwner->fLink->Attach<rgb_color>(color);

        fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
    }

    fState->low_color = color;

    fState->archiving_flags |= B_VIEW_LOW_COLOR_BIT;
}


rgb_color
BView::LowColor() const
{
    if (!fState->IsValid(B_VIEW_LOW_COLOR_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_LOW_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<rgb_color>(&fState->low_color);

            fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
        }
    }

    return fState->low_color;
}


void
BView::SetLowUIColor(color_which which, float tint)
{
    if (fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT)
        && fState->which_low_color == which
        && fState->which_low_color_tint == tint)
        return;

    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_LOW_UI_COLOR);
        fOwner->fLink->Attach<color_which>(which);
        fOwner->fLink->Attach<float>(tint);

        fState->valid_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
    }

    fState->which_low_color = which;
    fState->which_low_color_tint = tint;

    if (which != B_NO_COLOR) {
        fState->archiving_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_LOW_COLOR_BIT;
        fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;

        fState->low_color = tint_color(ui_color(which), tint);
    } else {
        fState->valid_flags &= ~B_VIEW_LOW_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_WHICH_LOW_COLOR_BIT;
    }
}


color_which
BView::LowUIColor(float* tint) const
{
    if (!fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT)
        && fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_LOW_UI_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<color_which>(&fState->which_low_color);
            fOwner->fLink->Read<float>(&fState->which_low_color_tint);
            fOwner->fLink->Read<rgb_color>(&fState->low_color);

            fState->valid_flags |= B_VIEW_WHICH_LOW_COLOR_BIT;
            fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
        }
    }

    if (tint != NULL)
        *tint = fState->which_low_color_tint;

    return fState->which_low_color;
}


bool
BView::HasDefaultColors() const
{
    // If we don't have any of these flags, then we have default colors
    uint32 testMask = B_VIEW_VIEW_COLOR_BIT | B_VIEW_HIGH_COLOR_BIT
        | B_VIEW_LOW_COLOR_BIT | B_VIEW_WHICH_VIEW_COLOR_BIT
        | B_VIEW_WHICH_HIGH_COLOR_BIT | B_VIEW_WHICH_LOW_COLOR_BIT;

    return (fState->archiving_flags & testMask) == 0;
}


bool
BView::HasSystemColors() const
{
    return fState->which_view_color == B_PANEL_BACKGROUND_COLOR
        && fState->which_high_color == B_PANEL_TEXT_COLOR
        && fState->which_low_color == B_PANEL_BACKGROUND_COLOR
        && fState->which_view_color_tint == B_NO_TINT
        && fState->which_high_color_tint == B_NO_TINT
        && fState->which_low_color_tint == B_NO_TINT;
}


void
BView::AdoptParentColors()
{
    AdoptViewColors(Parent());
}


void
BView::AdoptSystemColors()
{
    SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
    SetLowUIColor(B_PANEL_BACKGROUND_COLOR);
    SetHighUIColor(B_PANEL_TEXT_COLOR);
}


void
BView::AdoptViewColors(BView* view)
{
    if (view == NULL || (view->Window() != NULL && !view->LockLooper()))
        return;

    float tint = B_NO_TINT;
    float viewTint = tint;
    color_which viewWhich = view->ViewUIColor(&viewTint);

    // View color
    if (viewWhich != B_NO_COLOR)
        SetViewUIColor(viewWhich, viewTint);
    else
        SetViewColor(view->ViewColor());

    // Low color
    color_which which = view->LowUIColor(&tint);
    if (which != B_NO_COLOR)
        SetLowUIColor(which, tint);
    else if (viewWhich != B_NO_COLOR)
        SetLowUIColor(viewWhich, viewTint);
    else
        SetLowColor(view->LowColor());

    // High color
    which = view->HighUIColor(&tint);
    if (which != B_NO_COLOR)
        SetHighUIColor(which, tint);
    else
        SetHighColor(view->HighColor());

    if (view->Window() != NULL)
        view->UnlockLooper();
}


void
BView::SetViewColor(rgb_color color)
{
    SetViewUIColor(B_NO_COLOR);

    if (fState->IsValid(B_VIEW_VIEW_COLOR_BIT)
        && fState->view_color == color)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_COLOR);
        fOwner->fLink->Attach<rgb_color>(color);
        fOwner->fLink->Flush();

        fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
    }

    fState->view_color = color;

    fState->archiving_flags |= B_VIEW_VIEW_COLOR_BIT;
}


rgb_color
BView::ViewColor() const
{
    if (!fState->IsValid(B_VIEW_VIEW_COLOR_BIT) && fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_VIEW_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<rgb_color>(&fState->view_color);

            fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
        }
    }

    return fState->view_color;
}


void
BView::SetViewUIColor(color_which which, float tint)
{
    if (fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)
        && fState->which_view_color == which
        && fState->which_view_color_tint == tint)
        return;

    if (fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_UI_COLOR);
        fOwner->fLink->Attach<color_which>(which);
        fOwner->fLink->Attach<float>(tint);

        fState->valid_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
    }

    fState->which_view_color = which;
    fState->which_view_color_tint = tint;

    if (which != B_NO_COLOR) {
        fState->archiving_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_VIEW_COLOR_BIT;
        fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;

        fState->view_color = tint_color(ui_color(which), tint);
    } else {
        fState->valid_flags &= ~B_VIEW_VIEW_COLOR_BIT;
        fState->archiving_flags &= ~B_VIEW_WHICH_VIEW_COLOR_BIT;
    }

    if (!fState->IsValid(B_VIEW_WHICH_LOW_COLOR_BIT))
        SetLowUIColor(which, tint);
}


color_which
BView::ViewUIColor(float* tint) const
{
    if (!fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)
        && fOwner != NULL) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_GET_VIEW_UI_COLOR);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->Read<color_which>(&fState->which_view_color);
            fOwner->fLink->Read<float>(&fState->which_view_color_tint);
            fOwner->fLink->Read<rgb_color>(&fState->view_color);

            fState->valid_flags |= B_VIEW_WHICH_VIEW_COLOR_BIT;
            fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
        }
    }

    if (tint != NULL)
        *tint = fState->which_view_color_tint;

    return fState->which_view_color;
}


void
BView::ForceFontAliasing(bool enable)
{
    if (fState->IsValid(B_VIEW_FONT_ALIASING_BIT)
        && enable == fState->font_aliasing)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_PRINT_ALIASING);
        fOwner->fLink->Attach<bool>(enable);

        fState->valid_flags |= B_VIEW_FONT_ALIASING_BIT;
    }

    fState->font_aliasing = enable;
    fState->archiving_flags |= B_VIEW_FONT_ALIASING_BIT;
}


void
BView::SetFont(const BFont* font, uint32 mask)
{
    if (!font || mask == 0)
        return;

    if (mask == B_FONT_ALL) {
        fState->font = *font;
    } else {
        // TODO: move this into a BFont method
        if (mask & B_FONT_FAMILY_AND_STYLE)
            fState->font.SetFamilyAndStyle(font->FamilyAndStyle());

        if (mask & B_FONT_SIZE)
            fState->font.SetSize(font->Size());

        if (mask & B_FONT_SHEAR)
            fState->font.SetShear(font->Shear());

        if (mask & B_FONT_ROTATION)
            fState->font.SetRotation(font->Rotation());

        if (mask & B_FONT_FALSE_BOLD_WIDTH)
            fState->font.SetFalseBoldWidth(font->FalseBoldWidth());

        if (mask & B_FONT_SPACING)
            fState->font.SetSpacing(font->Spacing());

        if (mask & B_FONT_ENCODING)
            fState->font.SetEncoding(font->Encoding());

        if (mask & B_FONT_FACE)
            fState->font.SetFace(font->Face());

        if (mask & B_FONT_FLAGS)
            fState->font.SetFlags(font->Flags());
    }

    fState->font_flags |= mask;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fState->UpdateServerFontState(*fOwner->fLink);
        fState->valid_flags |= B_VIEW_FONT_BIT;
    }

    fState->archiving_flags |= B_VIEW_FONT_BIT;
    // TODO: InvalidateLayout() here for convenience?
}


void
BView::GetFont(BFont* font) const
{
    if (!fState->IsValid(B_VIEW_FONT_BIT)) {
        // we don't keep graphics state information, therefor
        // we need to ask the server for the origin after PopState()
        _CheckOwnerLockAndSwitchCurrent();

        // TODO: add a font getter!
        fState->UpdateFrom(*fOwner->fLink);
    }

    *font = fState->font;
}


void
BView::GetFontHeight(font_height* height) const
{
    fState->font.GetHeight(height);
}


void
BView::SetFontSize(float size)
{
    BFont font;
    font.SetSize(size);

    SetFont(&font, B_FONT_SIZE);
}


float
BView::StringWidth(const char* string) const
{
    return fState->font.StringWidth(string);
}


float
BView::StringWidth(const char* string, int32 length) const
{
    return fState->font.StringWidth(string, length);
}


void
BView::GetStringWidths(char* stringArray[], int32 lengthArray[],
    int32 numStrings, float widthArray[]) const
{
    fState->font.GetStringWidths(const_cast<const char**>(stringArray),
        const_cast<const int32*>(lengthArray), numStrings, widthArray);
}


void
BView::TruncateString(BString* string, uint32 mode, float width) const
{
    fState->font.TruncateString(string, mode, width);
}


void
BView::ClipToPicture(BPicture* picture, BPoint where, bool sync)
{
    _ClipToPicture(picture, where, false, sync);
}


void
BView::ClipToInversePicture(BPicture* picture, BPoint where, bool sync)
{
    _ClipToPicture(picture, where, true, sync);
}


void
BView::GetClippingRegion(BRegion* region) const
{
    if (!region)
        return;

    // NOTE: the client has no idea when the clipping in the server
    // changed, so it is always read from the server
    region->MakeEmpty();


    if (fOwner) {
        if (fIsPrinting && _CheckOwnerLock()) {
            region->Set(fState->print_rect);
            return;
        }

        _CheckLockAndSwitchCurrent();
        fOwner->fLink->StartMessage(AS_VIEW_GET_CLIP_REGION);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK) {
            fOwner->fLink->ReadRegion(region);
            fState->valid_flags |= B_VIEW_CLIP_REGION_BIT;
        }
    }
}


void
BView::ConstrainClippingRegion(BRegion* region)
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_SET_CLIP_REGION);

        if (region) {
            int32 count = region->CountRects();
            fOwner->fLink->Attach<int32>(count);
            if (count > 0)
                fOwner->fLink->AttachRegion(*region);
        } else {
            fOwner->fLink->Attach<int32>(-1);
            // '-1' means that in the app_server, there won't be any 'local'
            // clipping region (it will be NULL)
        }

        _FlushIfNotInTransaction();

        fState->valid_flags &= ~B_VIEW_CLIP_REGION_BIT;
        fState->archiving_flags |= B_VIEW_CLIP_REGION_BIT;
    }
}


void
BView::ClipToRect(BRect rect)
{
    _ClipToRect(rect, false);
}


void
BView::ClipToInverseRect(BRect rect)
{
    _ClipToRect(rect, true);
}


void
BView::ClipToShape(BShape* shape)
{
    _ClipToShape(shape, false);
}


void
BView::ClipToInverseShape(BShape* shape)
{
    _ClipToShape(shape, true);
}


//  #pragma mark - Drawing Functions


void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect,
    uint32 options)
{
    if (bitmap == NULL || fOwner == NULL
        || !bitmapRect.IsValid() || !viewRect.IsValid())
        return;

    _CheckLockAndSwitchCurrent();

    ViewDrawBitmapInfo info;
    info.bitmapToken = bitmap->_ServerToken();
    info.options = options;
    info.viewRect = viewRect;
    info.bitmapRect = bitmapRect;

    fOwner->fLink->StartMessage(AS_VIEW_DRAW_BITMAP);
    fOwner->fLink->Attach<ViewDrawBitmapInfo>(info);

    _FlushIfNotInTransaction();
}


void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect)
{
    DrawBitmapAsync(bitmap, bitmapRect, viewRect, 0);
}


void
BView::DrawBitmapAsync(const BBitmap* bitmap, BRect viewRect)
{
    if (bitmap && fOwner) {
        DrawBitmapAsync(bitmap, bitmap->Bounds().OffsetToCopy(B_ORIGIN),
            viewRect, 0);
    }
}


void
BView::DrawBitmapAsync(const BBitmap* bitmap, BPoint where)
{
    if (bitmap == NULL || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    ViewDrawBitmapInfo info;
    info.bitmapToken = bitmap->_ServerToken();
    info.options = 0;
    info.bitmapRect = bitmap->Bounds().OffsetToCopy(B_ORIGIN);
    info.viewRect = info.bitmapRect.OffsetToCopy(where);

    fOwner->fLink->StartMessage(AS_VIEW_DRAW_BITMAP);
    fOwner->fLink->Attach<ViewDrawBitmapInfo>(info);

    _FlushIfNotInTransaction();
}


void
BView::DrawBitmapAsync(const BBitmap* bitmap)
{
    DrawBitmapAsync(bitmap, PenLocation());
}


void
BView::DrawBitmap(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect,
    uint32 options)
{
    if (fOwner) {
        DrawBitmapAsync(bitmap, bitmapRect, viewRect, options);
        Sync();
    }
}


void
BView::DrawBitmap(const BBitmap* bitmap, BRect bitmapRect, BRect viewRect)
{
    if (fOwner) {
        DrawBitmapAsync(bitmap, bitmapRect, viewRect, 0);
        Sync();
    }
}


void
BView::DrawBitmap(const BBitmap* bitmap, BRect viewRect)
{
    if (bitmap && fOwner) {
        DrawBitmap(bitmap, bitmap->Bounds().OffsetToCopy(B_ORIGIN), viewRect,
            0);
    }
}


void
BView::DrawBitmap(const BBitmap* bitmap, BPoint where)
{
    if (fOwner) {
        DrawBitmapAsync(bitmap, where);
        Sync();
    }
}


void
BView::DrawBitmap(const BBitmap* bitmap)
{
    DrawBitmap(bitmap, PenLocation());
}


void
BView::DrawChar(char c)
{
    DrawString(&c, 1, PenLocation());
}


void
BView::DrawChar(char c, BPoint location)
{
    DrawString(&c, 1, location);
}


void
BView::DrawString(const char* string, escapement_delta* delta)
{
    if (string == NULL)
        return;

    DrawString(string, strlen(string), PenLocation(), delta);
}


void
BView::DrawString(const char* string, BPoint location, escapement_delta* delta)
{
    if (string == NULL)
        return;

    DrawString(string, strlen(string), location, delta);
}


void
BView::DrawString(const char* string, int32 length, escapement_delta* delta)
{
    DrawString(string, length, PenLocation(), delta);
}


void
BView::DrawString(const char* string, int32 length, BPoint location,
    escapement_delta* delta)
{
    if (fOwner == NULL || string == NULL || length < 1)
        return;

    _CheckLockAndSwitchCurrent();

    ViewDrawStringInfo info;
    info.stringLength = length;
    info.location = location;
    if (delta != NULL)
        info.delta = *delta;

    // quite often delta will be NULL
    if (delta)
        fOwner->fLink->StartMessage(AS_DRAW_STRING_WITH_DELTA);
    else
        fOwner->fLink->StartMessage(AS_DRAW_STRING);

    fOwner->fLink->Attach<ViewDrawStringInfo>(info);
    fOwner->fLink->Attach(string, length);

    _FlushIfNotInTransaction();
    
    if (fCurrentPicture != NULL)
    {
            // The app server does not know how to update the pen location when
            // drawing to a picture, so do it ourselves.
            // FIXME handle the escapement deltas
            MovePenBy(StringWidth(string, length), 0);
    }

    // this modifies our pen location, so we invalidate the flag.
    fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}


void
BView::DrawString(const char* string, const BPoint* locations,
    int32 locationCount)
{
    if (string == NULL)
        return;

    DrawString(string, strlen(string), locations, locationCount);
}


void
BView::DrawString(const char* string, int32 length, const BPoint* locations,
    int32 locationCount)
{
    if (fOwner == NULL || string == NULL || length < 1 || locations == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_DRAW_STRING_WITH_OFFSETS);

    fOwner->fLink->Attach<int32>(length);
    fOwner->fLink->Attach<int32>(locationCount);
    fOwner->fLink->Attach(string, length);
    fOwner->fLink->Attach(locations, locationCount * sizeof(BPoint));

    _FlushIfNotInTransaction();

    // this modifies our pen location, so we invalidate the flag.
    fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}


void
BView::StrokeEllipse(BPoint center, float xRadius, float yRadius,
    ::pattern pattern)
{
    StrokeEllipse(BRect(center.x - xRadius, center.y - yRadius,
        center.x + xRadius, center.y + yRadius), pattern);
}


void
BView::StrokeEllipse(BRect rect, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_ELLIPSE);
    fOwner->fLink->Attach<BRect>(rect);

    _FlushIfNotInTransaction();
}


void
BView::FillEllipse(BPoint center, float xRadius, float yRadius,
    ::pattern pattern)
{
    FillEllipse(BRect(center.x - xRadius, center.y - yRadius,
        center.x + xRadius, center.y + yRadius), pattern);
}


void
BView::FillEllipse(BPoint center, float xRadius, float yRadius,
    const BGradient& gradient)
{
    FillEllipse(BRect(center.x - xRadius, center.y - yRadius,
        center.x + xRadius, center.y + yRadius), gradient);
}


void
BView::FillEllipse(BRect rect, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_ELLIPSE);
    fOwner->fLink->Attach<BRect>(rect);

    _FlushIfNotInTransaction();
}


void
BView::FillEllipse(BRect rect, const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_ELLIPSE_GRADIENT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokeArc(BPoint center, float xRadius, float yRadius, float startAngle,
    float arcAngle, ::pattern pattern)
{
    StrokeArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
        center.y + yRadius), startAngle, arcAngle, pattern);
}


void
BView::StrokeArc(BRect rect, float startAngle, float arcAngle,
    ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_ARC);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(startAngle);
    fOwner->fLink->Attach<float>(arcAngle);

    _FlushIfNotInTransaction();
}


void
BView::FillArc(BPoint center,float xRadius, float yRadius, float startAngle,
    float arcAngle, ::pattern pattern)
{
    FillArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
        center.y + yRadius), startAngle, arcAngle, pattern);
}


void
BView::FillArc(BPoint center,float xRadius, float yRadius, float startAngle,
    float arcAngle, const BGradient& gradient)
{
    FillArc(BRect(center.x - xRadius, center.y - yRadius, center.x + xRadius,
        center.y + yRadius), startAngle, arcAngle, gradient);
}


void
BView::FillArc(BRect rect, float startAngle, float arcAngle,
    ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_ARC);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(startAngle);
    fOwner->fLink->Attach<float>(arcAngle);

    _FlushIfNotInTransaction();
}


void
BView::FillArc(BRect rect, float startAngle, float arcAngle,
    const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_ARC_GRADIENT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(startAngle);
    fOwner->fLink->Attach<float>(arcAngle);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokeBezier(BPoint* controlPoints, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_BEZIER);
    fOwner->fLink->Attach<BPoint>(controlPoints[0]);
    fOwner->fLink->Attach<BPoint>(controlPoints[1]);
    fOwner->fLink->Attach<BPoint>(controlPoints[2]);
    fOwner->fLink->Attach<BPoint>(controlPoints[3]);

    _FlushIfNotInTransaction();
}


void
BView::FillBezier(BPoint* controlPoints, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_BEZIER);
    fOwner->fLink->Attach<BPoint>(controlPoints[0]);
    fOwner->fLink->Attach<BPoint>(controlPoints[1]);
    fOwner->fLink->Attach<BPoint>(controlPoints[2]);
    fOwner->fLink->Attach<BPoint>(controlPoints[3]);

    _FlushIfNotInTransaction();
}


void
BView::FillBezier(BPoint* controlPoints, const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_BEZIER_GRADIENT);
    fOwner->fLink->Attach<BPoint>(controlPoints[0]);
    fOwner->fLink->Attach<BPoint>(controlPoints[1]);
    fOwner->fLink->Attach<BPoint>(controlPoints[2]);
    fOwner->fLink->Attach<BPoint>(controlPoints[3]);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokePolygon(const BPolygon* polygon, bool closed, ::pattern pattern)
{
    if (polygon == NULL)
        return;

    StrokePolygon(polygon->fPoints, polygon->fCount, polygon->Frame(), closed,
        pattern);
}


void
BView::StrokePolygon(const BPoint* pointArray, int32 numPoints, bool closed,
    ::pattern pattern)
{
    BPolygon polygon(pointArray, numPoints);

    StrokePolygon(polygon.fPoints, polygon.fCount, polygon.Frame(), closed,
        pattern);
}


void
BView::StrokePolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
    bool closed, ::pattern pattern)
{
    if (pointArray == NULL
        || numPoints <= 1
        || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    BPolygon polygon(pointArray, numPoints);
    polygon.MapTo(polygon.Frame(), bounds);

    if (fOwner->fLink->StartMessage(AS_STROKE_POLYGON,
            polygon.fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(bool)
                + sizeof(int32)) == B_OK) {
        fOwner->fLink->Attach<BRect>(polygon.Frame());
        fOwner->fLink->Attach<bool>(closed);
        fOwner->fLink->Attach<int32>(polygon.fCount);
        fOwner->fLink->Attach(polygon.fPoints, polygon.fCount * sizeof(BPoint));

        _FlushIfNotInTransaction();
    } else {
        fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
    }
}


void
BView::FillPolygon(const BPolygon* polygon, ::pattern pattern)
{
    if (polygon == NULL
        || polygon->fCount <= 2
        || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    if (fOwner->fLink->StartMessage(AS_FILL_POLYGON,
            polygon->fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(int32))
                == B_OK) {
        fOwner->fLink->Attach<BRect>(polygon->Frame());
        fOwner->fLink->Attach<int32>(polygon->fCount);
        fOwner->fLink->Attach(polygon->fPoints,
            polygon->fCount * sizeof(BPoint));

        _FlushIfNotInTransaction();
    } else {
        fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
    }
}


void
BView::FillPolygon(const BPolygon* polygon, const BGradient& gradient)
{
    if (polygon == NULL
        || polygon->fCount <= 2
        || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    if (fOwner->fLink->StartMessage(AS_FILL_POLYGON_GRADIENT,
            polygon->fCount * sizeof(BPoint) + sizeof(BRect) + sizeof(int32))
                == B_OK) {
        fOwner->fLink->Attach<BRect>(polygon->Frame());
        fOwner->fLink->Attach<int32>(polygon->fCount);
        fOwner->fLink->Attach(polygon->fPoints,
            polygon->fCount * sizeof(BPoint));
        fOwner->fLink->AttachGradient(gradient);

        _FlushIfNotInTransaction();
    } else {
        fprintf(stderr, "ERROR: Can't send polygon to app_server!\n");
    }
}


void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, ::pattern pattern)
{
    if (pointArray == NULL)
        return;

    BPolygon polygon(pointArray, numPoints);
    FillPolygon(&polygon, pattern);
}


void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints,
    const BGradient& gradient)
{
    if (pointArray == NULL)
        return;

    BPolygon polygon(pointArray, numPoints);
    FillPolygon(&polygon, gradient);
}


void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
    ::pattern pattern)
{
    if (pointArray == NULL)
        return;

    BPolygon polygon(pointArray, numPoints);

    polygon.MapTo(polygon.Frame(), bounds);
    FillPolygon(&polygon, pattern);
}


void
BView::FillPolygon(const BPoint* pointArray, int32 numPoints, BRect bounds,
    const BGradient& gradient)
{
    if (pointArray == NULL)
        return;

    BPolygon polygon(pointArray, numPoints);

    polygon.MapTo(polygon.Frame(), bounds);
    FillPolygon(&polygon, gradient);
}


void
BView::StrokeRect(BRect rect, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_RECT);
    fOwner->fLink->Attach<BRect>(rect);

    _FlushIfNotInTransaction();
}


void
BView::FillRect(BRect rect, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    // NOTE: ensuring compatibility with R5,
    // invalid rects are not filled, they are stroked though!
    if (!rect.IsValid())
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_RECT);
    fOwner->fLink->Attach<BRect>(rect);

    _FlushIfNotInTransaction();
}


void
BView::FillRect(BRect rect, const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    // NOTE: ensuring compatibility with R5,
    // invalid rects are not filled, they are stroked though!
    if (!rect.IsValid())
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_RECT_GRADIENT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokeRoundRect(BRect rect, float xRadius, float yRadius,
    ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_ROUNDRECT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(xRadius);
    fOwner->fLink->Attach<float>(yRadius);

    _FlushIfNotInTransaction();
}


void
BView::FillRoundRect(BRect rect, float xRadius, float yRadius,
    ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_ROUNDRECT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(xRadius);
    fOwner->fLink->Attach<float>(yRadius);

    _FlushIfNotInTransaction();
}


void
BView::FillRoundRect(BRect rect, float xRadius, float yRadius,
    const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_ROUNDRECT_GRADIENT);
    fOwner->fLink->Attach<BRect>(rect);
    fOwner->fLink->Attach<float>(xRadius);
    fOwner->fLink->Attach<float>(yRadius);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::FillRegion(BRegion* region, ::pattern pattern)
{
    if (region == NULL || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_REGION);
    fOwner->fLink->AttachRegion(*region);

    _FlushIfNotInTransaction();
}


void
BView::FillRegion(BRegion* region, const BGradient& gradient)
{
    if (region == NULL || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_REGION_GRADIENT);
    fOwner->fLink->AttachRegion(*region);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokeTriangle(BPoint point1, BPoint point2, BPoint point3, BRect bounds,
    ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_TRIANGLE);
    fOwner->fLink->Attach<BPoint>(point1);
    fOwner->fLink->Attach<BPoint>(point2);
    fOwner->fLink->Attach<BPoint>(point3);
    fOwner->fLink->Attach<BRect>(bounds);

    _FlushIfNotInTransaction();
}


void
BView::StrokeTriangle(BPoint point1, BPoint point2, BPoint point3,
    ::pattern pattern)
{
    if (fOwner) {
        // we construct the smallest rectangle that contains the 3 points
        // for the 1st point
        BRect bounds(point1, point1);

        // for the 2nd point
        if (point2.x < bounds.left)
            bounds.left = point2.x;

        if (point2.y < bounds.top)
            bounds.top = point2.y;

        if (point2.x > bounds.right)
            bounds.right = point2.x;

        if (point2.y > bounds.bottom)
            bounds.bottom = point2.y;

        // for the 3rd point
        if (point3.x < bounds.left)
            bounds.left = point3.x;

        if (point3.y < bounds.top)
            bounds.top = point3.y;

        if (point3.x > bounds.right)
            bounds.right = point3.x;

        if (point3.y > bounds.bottom)
            bounds.bottom = point3.y;

        StrokeTriangle(point1, point2, point3, bounds, pattern);
    }
}


void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
    ::pattern pattern)
{
    if (fOwner) {
        // we construct the smallest rectangle that contains the 3 points
        // for the 1st point
        BRect bounds(point1, point1);

        // for the 2nd point
        if (point2.x < bounds.left)
            bounds.left = point2.x;

        if (point2.y < bounds.top)
            bounds.top = point2.y;

        if (point2.x > bounds.right)
            bounds.right = point2.x;

        if (point2.y > bounds.bottom)
            bounds.bottom = point2.y;

        // for the 3rd point
        if (point3.x < bounds.left)
            bounds.left = point3.x;

        if (point3.y < bounds.top)
            bounds.top = point3.y;

        if (point3.x > bounds.right)
            bounds.right = point3.x;

        if (point3.y > bounds.bottom)
            bounds.bottom = point3.y;

        FillTriangle(point1, point2, point3, bounds, pattern);
    }
}


void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
    const BGradient& gradient)
{
    if (fOwner) {
        // we construct the smallest rectangle that contains the 3 points
        // for the 1st point
        BRect bounds(point1, point1);

        // for the 2nd point
        if (point2.x < bounds.left)
            bounds.left = point2.x;

        if (point2.y < bounds.top)
            bounds.top = point2.y;

        if (point2.x > bounds.right)
            bounds.right = point2.x;

        if (point2.y > bounds.bottom)
            bounds.bottom = point2.y;

        // for the 3rd point
        if (point3.x < bounds.left)
            bounds.left = point3.x;

        if (point3.y < bounds.top)
            bounds.top = point3.y;

        if (point3.x > bounds.right)
            bounds.right = point3.x;

        if (point3.y > bounds.bottom)
            bounds.bottom = point3.y;

        FillTriangle(point1, point2, point3, bounds, gradient);
    }
}


void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3,
    BRect bounds, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_TRIANGLE);
    fOwner->fLink->Attach<BPoint>(point1);
    fOwner->fLink->Attach<BPoint>(point2);
    fOwner->fLink->Attach<BPoint>(point3);
    fOwner->fLink->Attach<BRect>(bounds);

    _FlushIfNotInTransaction();
}


void
BView::FillTriangle(BPoint point1, BPoint point2, BPoint point3, BRect bounds,
    const BGradient& gradient)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    fOwner->fLink->StartMessage(AS_FILL_TRIANGLE_GRADIENT);
    fOwner->fLink->Attach<BPoint>(point1);
    fOwner->fLink->Attach<BPoint>(point2);
    fOwner->fLink->Attach<BPoint>(point3);
    fOwner->fLink->Attach<BRect>(bounds);
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::StrokeLine(BPoint toPoint, ::pattern pattern)
{
    StrokeLine(PenLocation(), toPoint, pattern);
}


void
BView::StrokeLine(BPoint start, BPoint end, ::pattern pattern)
{
    if (fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    ViewStrokeLineInfo info;
    info.startPoint = start;
    info.endPoint = end;

    fOwner->fLink->StartMessage(AS_STROKE_LINE);
    fOwner->fLink->Attach<ViewStrokeLineInfo>(info);

    _FlushIfNotInTransaction();

    // this modifies our pen location, so we invalidate the flag.
    fState->valid_flags &= ~B_VIEW_PEN_LOCATION_BIT;
}


void
BView::StrokeShape(BShape* shape, ::pattern pattern)
{
    if (shape == NULL || fOwner == NULL)
        return;

    shape_data* sd = (shape_data*)shape->fPrivateData;
    if (sd->opCount == 0 || sd->ptCount == 0)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_STROKE_SHAPE);
    fOwner->fLink->Attach<BRect>(shape->Bounds());
    fOwner->fLink->Attach<int32>(sd->opCount);
    fOwner->fLink->Attach<int32>(sd->ptCount);
    fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(uint32));
    fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));

    _FlushIfNotInTransaction();
}


void
BView::FillShape(BShape* shape, ::pattern pattern)
{
    if (shape == NULL || fOwner == NULL)
        return;

    shape_data* sd = (shape_data*)(shape->fPrivateData);
    if (sd->opCount == 0 || sd->ptCount == 0)
        return;

    _CheckLockAndSwitchCurrent();
    _UpdatePattern(pattern);

    fOwner->fLink->StartMessage(AS_FILL_SHAPE);
    fOwner->fLink->Attach<BRect>(shape->Bounds());
    fOwner->fLink->Attach<int32>(sd->opCount);
    fOwner->fLink->Attach<int32>(sd->ptCount);
    fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(int32));
    fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));

    _FlushIfNotInTransaction();
}


void
BView::FillShape(BShape* shape, const BGradient& gradient)
{
    if (shape == NULL || fOwner == NULL)
        return;

    shape_data* sd = (shape_data*)(shape->fPrivateData);
    if (sd->opCount == 0 || sd->ptCount == 0)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_FILL_SHAPE_GRADIENT);
    fOwner->fLink->Attach<BRect>(shape->Bounds());
    fOwner->fLink->Attach<int32>(sd->opCount);
    fOwner->fLink->Attach<int32>(sd->ptCount);
    fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(int32));
    fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
    fOwner->fLink->AttachGradient(gradient);

    _FlushIfNotInTransaction();
}


void
BView::BeginLineArray(int32 count)
{
    if (fOwner == NULL)
        return;

    if (count <= 0)
        debugger("Calling BeginLineArray with a count <= 0");

    _CheckLock();

    if (fCommArray) {
        debugger("Can't nest BeginLineArray calls");
            // not fatal, but it helps during
            // development of your app and is in
            // line with R5...
        delete[] fCommArray->array;
        delete fCommArray;
    }

    // TODO: since this method cannot return failure, and further AddLine()
    //  calls with a NULL fCommArray would drop into the debugger anyway,
    //  we allow the possible std::bad_alloc exceptions here...
    fCommArray = new _array_data_;
    fCommArray->count = 0;

    // Make sure the fCommArray is initialized to reasonable values in cases of
    // bad_alloc. At least the exception can be caught and EndLineArray won't
    // crash.
    fCommArray->array = NULL;
    fCommArray->maxCount = 0;

    fCommArray->array = new ViewLineArrayInfo[count];
    fCommArray->maxCount = count;
}


void
BView::AddLine(BPoint start, BPoint end, rgb_color color)
{
    if (fOwner == NULL)
        return;

    if (!fCommArray)
        debugger("BeginLineArray must be called before using AddLine");

    _CheckLock();

    const uint32 &arrayCount = fCommArray->count;
    if (arrayCount < fCommArray->maxCount) {
        fCommArray->array[arrayCount].startPoint = start;
        fCommArray->array[arrayCount].endPoint = end;
        fCommArray->array[arrayCount].color = color;

        fCommArray->count++;
    }
}


void
BView::EndLineArray()
{
    if (fOwner == NULL)
        return;

    if (fCommArray == NULL)
        debugger("Can't call EndLineArray before BeginLineArray");

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_STROKE_LINEARRAY);
    fOwner->fLink->Attach<int32>(fCommArray->count);
    fOwner->fLink->Attach(fCommArray->array,
        fCommArray->count * sizeof(ViewLineArrayInfo));

    _FlushIfNotInTransaction();

    _RemoveCommArray();
}


void
BView::SetDiskMode(char* filename, long offset)
{
    // TODO: implement
    // One BeBook version has this to say about SetDiskMode():
    //
    // "Begins recording a picture to the file with the given filename
    // at the given offset. Subsequent drawing commands sent to the view
    // will be written to the file until EndPicture() is called. The
    // stored commands may be played from the file with DrawPicture()."
}


void
BView::BeginPicture(BPicture* picture)
{
    if (_CheckOwnerLockAndSwitchCurrent()
        && picture && picture->fUsurped == NULL) {
        picture->Usurp(fCurrentPicture);
        fCurrentPicture = picture;

        fOwner->fLink->StartMessage(AS_VIEW_BEGIN_PICTURE);
    }
}


void
BView::AppendToPicture(BPicture* picture)
{
    _CheckLockAndSwitchCurrent();

    if (picture && picture->fUsurped == NULL) {
        int32 token = picture->Token();

        if (token == -1) {
            BeginPicture(picture);
        } else {
            picture->SetToken(-1);
            picture->Usurp(fCurrentPicture);
            fCurrentPicture = picture;
            fOwner->fLink->StartMessage(AS_VIEW_APPEND_TO_PICTURE);
            fOwner->fLink->Attach<int32>(token);
        }
    }
}


BPicture*
BView::EndPicture()
{
    if (_CheckOwnerLockAndSwitchCurrent() && fCurrentPicture) {
        int32 token;

        fOwner->fLink->StartMessage(AS_VIEW_END_PICTURE);

        int32 code;
        if (fOwner->fLink->FlushWithReply(code) == B_OK
            && code == B_OK
            && fOwner->fLink->Read<int32>(&token) == B_OK) {
            BPicture* picture = fCurrentPicture;
            fCurrentPicture = picture->StepDown();
            picture->SetToken(token);

            // TODO do this more efficient e.g. use a shared area and let the
            // client write into it
            picture->_Download();
            return picture;
        }
    }

    return NULL;
}


void
BView::SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect,
    uint32 followFlags, uint32 options)
{
    _SetViewBitmap(bitmap, srcRect, dstRect, followFlags, options);
}


void
BView::SetViewBitmap(const BBitmap* bitmap, uint32 followFlags, uint32 options)
{
    BRect rect;
    if (bitmap)
        rect = bitmap->Bounds();

    rect.OffsetTo(B_ORIGIN);

    _SetViewBitmap(bitmap, rect, rect, followFlags, options);
}


void
BView::ClearViewBitmap()
{
    _SetViewBitmap(NULL, BRect(), BRect(), 0, 0);
}


status_t
BView::SetViewOverlay(const BBitmap* overlay, BRect srcRect, BRect dstRect,
    rgb_color* colorKey, uint32 followFlags, uint32 options)
{
    if (overlay == NULL || (overlay->fFlags & B_BITMAP_WILL_OVERLAY) == 0)
        return B_BAD_VALUE;

    status_t status = _SetViewBitmap(overlay, srcRect, dstRect, followFlags,
        options | AS_REQUEST_COLOR_KEY);
    if (status == B_OK) {
        // read the color that will be treated as transparent
        fOwner->fLink->Read<rgb_color>(colorKey);
    }

    return status;
}


status_t
BView::SetViewOverlay(const BBitmap* overlay, rgb_color* colorKey,
    uint32 followFlags, uint32 options)
{
    if (overlay == NULL)
        return B_BAD_VALUE;

    BRect rect = overlay->Bounds();
    rect.OffsetTo(B_ORIGIN);

    return SetViewOverlay(overlay, rect, rect, colorKey, followFlags, options);
}


void
BView::ClearViewOverlay()
{
    _SetViewBitmap(NULL, BRect(), BRect(), 0, 0);
}


void
BView::CopyBits(BRect src, BRect dst)
{
    if (fOwner == NULL)
        return;

    if (!src.IsValid() || !dst.IsValid())
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_COPY_BITS);
    fOwner->fLink->Attach<BRect>(src);
    fOwner->fLink->Attach<BRect>(dst);

    _FlushIfNotInTransaction();
}


void
BView::DrawPicture(const BPicture* picture)
{
    if (picture == NULL)
        return;

    DrawPictureAsync(picture, PenLocation());
    Sync();
}


void
BView::DrawPicture(const BPicture* picture, BPoint where)
{
    if (picture == NULL)
        return;

    DrawPictureAsync(picture, where);
    Sync();
}


void
BView::DrawPicture(const char* filename, long offset, BPoint where)
{
    if (!filename)
        return;

    DrawPictureAsync(filename, offset, where);
    Sync();
}


void
BView::DrawPictureAsync(const BPicture* picture)
{
    if (picture == NULL)
        return;

    DrawPictureAsync(picture, PenLocation());
}


void
BView::DrawPictureAsync(const BPicture* picture, BPoint where)
{
    if (picture == NULL)
        return;

    if (_CheckOwnerLockAndSwitchCurrent() && picture->Token() > 0) {
        fOwner->fLink->StartMessage(AS_VIEW_DRAW_PICTURE);
        fOwner->fLink->Attach<int32>(picture->Token());
        fOwner->fLink->Attach<BPoint>(where);

        _FlushIfNotInTransaction();
    }
}


void
BView::DrawPictureAsync(const char* filename, long offset, BPoint where)
{
    if (!filename)
        return;

    // TODO: Test
    BFile file(filename, B_READ_ONLY);
    if (file.InitCheck() < B_OK)
        return;

    file.Seek(offset, SEEK_SET);

    BPicture picture;
    if (picture.Unflatten(&file) < B_OK)
        return;

    DrawPictureAsync(&picture, where);
}


void
BView::BeginLayer(uint8 opacity)
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_BEGIN_LAYER);
        fOwner->fLink->Attach<uint8>(opacity);
        _FlushIfNotInTransaction();
    }
}


void
BView::EndLayer()
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_END_LAYER);
        _FlushIfNotInTransaction();
    }
}


void
BView::Invalidate(BRect invalRect)
{
    if (fOwner == NULL)
        return;

    // NOTE: This rounding of the invalid rect is to stay compatible with BeOS.
    // On the server side, the invalid rect will be converted to a BRegion,
    // which rounds in a different manner, so that it really includes the
    // fractional coordinates of a BRect (ie ceilf(rect.right) &
    // ceilf(rect.bottom)), which is also what BeOS does. So we have to do the
    // different rounding here to stay compatible in both ways.
    invalRect.left = (int)invalRect.left;
    invalRect.top = (int)invalRect.top;
    invalRect.right = (int)invalRect.right;
    invalRect.bottom = (int)invalRect.bottom;
    if (!invalRect.IsValid())
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_INVALIDATE_RECT);
    fOwner->fLink->Attach<BRect>(invalRect);

// TODO: determine why this check isn't working correctly.
#if 0
    if (!fOwner->fUpdateRequested) {
        fOwner->fLink->Flush();
        fOwner->fUpdateRequested = true;
    }
#else
    fOwner->fLink->Flush();
#endif
}


void
BView::Invalidate(const BRegion* region)
{
    if (region == NULL || fOwner == NULL)
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_INVALIDATE_REGION);
    fOwner->fLink->AttachRegion(*region);

// TODO: See above.
#if 0
    if (!fOwner->fUpdateRequested) {
        fOwner->fLink->Flush();
        fOwner->fUpdateRequested = true;
    }
#else
    fOwner->fLink->Flush();
#endif
}


void
BView::Invalidate()
{
    Invalidate(Bounds());
}


void
BView::DelayedInvalidate(bigtime_t delay)
{
    DelayedInvalidate(delay, Bounds());
}


void
BView::DelayedInvalidate(bigtime_t delay, BRect invalRect)
{
    if (fOwner == NULL)
        return;

    invalRect.left = (int)invalRect.left;
    invalRect.top = (int)invalRect.top;
    invalRect.right = (int)invalRect.right;
    invalRect.bottom = (int)invalRect.bottom;
    if (!invalRect.IsValid())
        return;

    _CheckLockAndSwitchCurrent();

    fOwner->fLink->StartMessage(AS_VIEW_DELAYED_INVALIDATE_RECT);
    fOwner->fLink->Attach<bigtime_t>(system_time() + delay);
    fOwner->fLink->Attach<BRect>(invalRect);
    fOwner->fLink->Flush();
}


void
BView::InvertRect(BRect rect)
{
    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_INVERT_RECT);
        fOwner->fLink->Attach<BRect>(rect);

        _FlushIfNotInTransaction();
    }
}


//  #pragma mark - View Hierarchy Functions


void
BView::AddChild(BView* child, BView* before)
{
    STRACE(("BView(%s)::AddChild(child '%s', before '%s')\n",
        this->Name(),
        child != NULL && child->Name() ? child->Name() : "NULL",
        before != NULL && before->Name() ? before->Name() : "NULL"));

    if (!_AddChild(child, before))
        return;

    if (fLayoutData->fLayout)
        fLayoutData->fLayout->AddView(child);
}


bool
BView::AddChild(BLayoutItem* child)
{
    if (!fLayoutData->fLayout)
        return false;
    return fLayoutData->fLayout->AddItem(child);
}


bool
BView::_AddChild(BView* child, BView* before)
{
    if (!child)
        return false;

    if (child->fParent != NULL) {
        debugger("AddChild failed - the view already has a parent.");
        return false;
    }

    if (child == this) {
        debugger("AddChild failed - cannot add a view to itself.");
        return false;
    }

    bool lockedOwner = false;
    if (fOwner && !fOwner->IsLocked()) {
        fOwner->Lock();
        lockedOwner = true;
    }

    if (!_AddChildToList(child, before)) {
        debugger("AddChild failed!");
        if (lockedOwner)
            fOwner->Unlock();
        return false;
    }

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        child->_SetOwner(fOwner);
        child->_CreateSelf();
        child->_Attach();

        if (lockedOwner)
            fOwner->Unlock();
    }

    InvalidateLayout();

    return true;
}


bool
BView::RemoveChild(BView* child)
{
    STRACE(("BView(%s)::RemoveChild(%s)\n", Name(), child->Name()));

    if (!child)
        return false;

    if (child->fParent != this)
        return false;

    return child->RemoveSelf();
}


int32
BView::CountChildren() const
{
    _CheckLock();

    uint32 count = 0;
    BView* child = fFirstChild;

    while (child != NULL) {
        count++;
        child = child->fNextSibling;
    }

    return count;
}


BView*
BView::ChildAt(int32 index) const
{
    _CheckLock();

    BView* child = fFirstChild;
    while (child != NULL && index-- > 0) {
        child = child->fNextSibling;
    }

    return child;
}


BView*
BView::NextSibling() const
{
    return fNextSibling;
}


BView*
BView::PreviousSibling() const
{
    return fPreviousSibling;
}


bool
BView::RemoveSelf()
{
    _RemoveLayoutItemsFromLayout(false);

    return _RemoveSelf();
}


bool
BView::_RemoveSelf()
{
    STRACE(("BView(%s)::_RemoveSelf()\n", Name()));

    // Remove this child from its parent

    BWindow* owner = fOwner;
    _CheckLock();

    if (owner != NULL) {
        _UpdateStateForRemove();
        _Detach();
    }

    BView* parent = fParent;
    if (!parent || !parent->_RemoveChildFromList(this))
        return false;

    if (owner != NULL && !fTopLevelView) {
        // the top level view is deleted by the app_server automatically
        owner->fLink->StartMessage(AS_VIEW_DELETE);
        owner->fLink->Attach<int32>(_get_object_token_(this));
    }

    parent->InvalidateLayout();

    STRACE(("DONE: BView(%s)::_RemoveSelf()\n", Name()));

    return true;
}


void
BView::_RemoveLayoutItemsFromLayout(bool deleteItems)
{
    if (fParent == NULL || fParent->fLayoutData->fLayout == NULL)
        return;

    int32 index = fLayoutData->fLayoutItems.CountItems();
    while (index-- > 0) {
        BLayoutItem* item = fLayoutData->fLayoutItems.ItemAt(index);
        item->RemoveSelf();
            // Removes item from fLayoutItems list
        if (deleteItems)
            delete item;
    }
}


BView*
BView::Parent() const
{
    if (fParent && fParent->fTopLevelView)
        return NULL;

    return fParent;
}


BView*
BView::FindView(const char* name) const
{
    if (name == NULL)
        return NULL;

    if (Name() != NULL && !strcmp(Name(), name))
        return const_cast<BView*>(this);

    BView* child = fFirstChild;
    while (child != NULL) {
        BView* view = child->FindView(name);
        if (view != NULL)
            return view;

        child = child->fNextSibling;
    }

    return NULL;
}


void
BView::MoveBy(float deltaX, float deltaY)
{
    MoveTo(fParentOffset.x + roundf(deltaX), fParentOffset.y + roundf(deltaY));
}


void
BView::MoveTo(BPoint where)
{
    MoveTo(where.x, where.y);
}


void
BView::MoveTo(float x, float y)
{
    if (x == fParentOffset.x && y == fParentOffset.y)
        return;

    // BeBook says we should do this. And it makes sense.
    x = roundf(x);
    y = roundf(y);

    if (fOwner) {
        _CheckLockAndSwitchCurrent();
        fOwner->fLink->StartMessage(AS_VIEW_MOVE_TO);
        fOwner->fLink->Attach<float>(x);
        fOwner->fLink->Attach<float>(y);

//      fState->valid_flags |= B_VIEW_FRAME_BIT;

        _FlushIfNotInTransaction();
    }

    _MoveTo((int32)x, (int32)y);
}


void
BView::ResizeBy(float deltaWidth, float deltaHeight)
{
    // BeBook says we should do this. And it makes sense.
    deltaWidth = roundf(deltaWidth);
    deltaHeight = roundf(deltaHeight);

    if (deltaWidth == 0 && deltaHeight == 0)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();
        fOwner->fLink->StartMessage(AS_VIEW_RESIZE_TO);

        fOwner->fLink->Attach<float>(fBounds.Width() + deltaWidth);
        fOwner->fLink->Attach<float>(fBounds.Height() + deltaHeight);

//      fState->valid_flags |= B_VIEW_FRAME_BIT;

        _FlushIfNotInTransaction();
    }

    _ResizeBy((int32)deltaWidth, (int32)deltaHeight);
}


void
BView::ResizeTo(float width, float height)
{
    ResizeBy(width - fBounds.Width(), height - fBounds.Height());
}


void
BView::ResizeTo(BSize size)
{
    ResizeBy(size.width - fBounds.Width(), size.height - fBounds.Height());
}


//  #pragma mark - Inherited Methods (from BHandler)


status_t
BView::GetSupportedSuites(BMessage* data)
{
    if (data == NULL)
        return B_BAD_VALUE;

    status_t status = data->AddString("suites", "suite/vnd.Be-view");
    BPropertyInfo propertyInfo(sViewPropInfo);
    if (status == B_OK)
        status = data->AddFlat("messages", &propertyInfo);
    if (status == B_OK)
        return BHandler::GetSupportedSuites(data);
    return status;
}


BHandler*
BView::ResolveSpecifier(BMessage* message, int32 index, BMessage* specifier,
    int32 what, const char* property)
{
    if (message->what == B_WINDOW_MOVE_BY
        || message->what == B_WINDOW_MOVE_TO) {
        return this;
    }

    BPropertyInfo propertyInfo(sViewPropInfo);
    status_t err = B_BAD_SCRIPT_SYNTAX;
    BMessage replyMsg(B_REPLY);

    switch (propertyInfo.FindMatch(message, index, specifier, what, property)) {
        case 0:
        case 1:
        case 3:
            return this;

        case 2:
            if (fShelf) {
                message->PopSpecifier();
                return fShelf;
            }

            err = B_NAME_NOT_FOUND;
            replyMsg.AddString("message", "This window doesn't have a shelf");
            break;

        case 4:
        {
            if (!fFirstChild) {
                err = B_NAME_NOT_FOUND;
                replyMsg.AddString("message", "This window doesn't have "
                    "children.");
                break;
            }
            BView* child = NULL;
            switch (what) {
                case B_INDEX_SPECIFIER:
                {
                    int32 index;
                    err = specifier->FindInt32("index", &index);
                    if (err == B_OK)
                        child = ChildAt(index);
                    break;
                }
                case B_REVERSE_INDEX_SPECIFIER:
                {
                    int32 rindex;
                    err = specifier->FindInt32("index", &rindex);
                    if (err == B_OK)
                        child = ChildAt(CountChildren() - rindex);
                    break;
                }
                case B_NAME_SPECIFIER:
                {
                    const char* name;
                    err = specifier->FindString("name", &name);
                    if (err == B_OK)
                        child = FindView(name);
                    break;
                }
            }

            if (child != NULL) {
                message->PopSpecifier();
                return child;
            }

            if (err == B_OK)
                err = B_BAD_INDEX;

            replyMsg.AddString("message",
                "Cannot find view at/with specified index/name.");
            break;
        }

        default:
            return BHandler::ResolveSpecifier(message, index, specifier, what,
                property);
    }

    if (err < B_OK) {
        replyMsg.what = B_MESSAGE_NOT_UNDERSTOOD;

        if (err == B_BAD_SCRIPT_SYNTAX)
            replyMsg.AddString("message", "Didn't understand the specifier(s)");
        else
            replyMsg.AddString("message", strerror(err));
    }

    replyMsg.AddInt32("error", err);
    message->SendReply(&replyMsg);
    return NULL;
}


void
BView::MessageReceived(BMessage* message)
{
    if (!message->HasSpecifiers()) {
        switch (message->what) {
            case B_VIEW_RESIZED:
                FrameResized(message->GetInt32("width", 0),
                    message->GetInt32("height", 0));
                break;

            case B_VIEW_MOVED:
                FrameMoved(fParentOffset);
                break;

            case B_MOUSE_IDLE:
            {
                BPoint where;
                if (message->FindPoint("be:view_where", &where) != B_OK)
                    break;

                BToolTip* tip;
                if (GetToolTipAt(where, &tip))
                    ShowToolTip(tip);
                else
                    BHandler::MessageReceived(message);
                break;
            }

            case B_MOUSE_WHEEL_CHANGED:
            {
                BScrollBar* horizontal = ScrollBar(B_HORIZONTAL);
                BScrollBar* vertical = ScrollBar(B_VERTICAL);
                if (horizontal == NULL && vertical == NULL) {
                    // Pass the message to the next handler
                    BHandler::MessageReceived(message);
                    break;
                }

                float deltaX = 0.0f;
                float deltaY = 0.0f;

                if (horizontal != NULL)
                    message->FindFloat("be:wheel_delta_x", &deltaX);

                if (vertical != NULL)
                    message->FindFloat("be:wheel_delta_y", &deltaY);

                if (deltaX == 0.0f && deltaY == 0.0f)
                    break;

                if ((modifiers() & B_CONTROL_KEY) != 0)
                    std::swap(horizontal, vertical);

                if (horizontal != NULL && deltaX != 0.0f)
                    ScrollWithMouseWheelDelta(horizontal, deltaX);

                if (vertical != NULL && deltaY != 0.0f)
                    ScrollWithMouseWheelDelta(vertical, deltaY);

                break;
            }

            // prevent message repeats
            case B_COLORS_UPDATED:
            case B_FONTS_UPDATED:
                break;

            case B_SCREEN_CHANGED:
            {
                // propegate message to child views
                int32 childCount = CountChildren();
                for (int32 i = 0; i < childCount; i++) {
                    BView* view = ChildAt(i);
                    if (view != NULL)
                        view->MessageReceived(message);
                }
                break;
            }

            default:
                BHandler::MessageReceived(message);
                break;
        }

        return;
    }

    // Scripting message

    BMessage replyMsg(B_REPLY);
    status_t err = B_BAD_SCRIPT_SYNTAX;
    int32 index;
    BMessage specifier;
    int32 what;
    const char* property;

    if (message->GetCurrentSpecifier(&index, &specifier, &what, &property)
            != B_OK) {
        return BHandler::MessageReceived(message);
    }

    BPropertyInfo propertyInfo(sViewPropInfo);
    switch (propertyInfo.FindMatch(message, index, &specifier, what,
            property)) {
        case 0:
            if (message->what == B_GET_PROPERTY) {
                err = replyMsg.AddRect("result", Frame());
            } else if (message->what == B_SET_PROPERTY) {
                BRect newFrame;
                err = message->FindRect("data", &newFrame);
                if (err == B_OK) {
                    MoveTo(newFrame.LeftTop());
                    ResizeTo(newFrame.Width(), newFrame.Height());
                }
            }
            break;
        case 1:
            if (message->what == B_GET_PROPERTY) {
                err = replyMsg.AddBool("result", IsHidden());
            } else if (message->what == B_SET_PROPERTY) {
                bool newHiddenState;
                err = message->FindBool("data", &newHiddenState);
                if (err == B_OK) {
                    if (newHiddenState == true)
                        Hide();
                    else
                        Show();
                }
            }
            break;
        case 3:
            err = replyMsg.AddInt32("result", CountChildren());
            break;
        default:
            return BHandler::MessageReceived(message);
    }

    if (err != B_OK) {
        replyMsg.what = B_MESSAGE_NOT_UNDERSTOOD;

        if (err == B_BAD_SCRIPT_SYNTAX)
            replyMsg.AddString("message", "Didn't understand the specifier(s)");
        else
            replyMsg.AddString("message", strerror(err));

        replyMsg.AddInt32("error", err);
    }

    message->SendReply(&replyMsg);
}


status_t
BView::Perform(perform_code code, void* _data)
{
    switch (code) {
        case PERFORM_CODE_MIN_SIZE:
            ((perform_data_min_size*)_data)->return_value
                = BView::MinSize();
            return B_OK;
        case PERFORM_CODE_MAX_SIZE:
            ((perform_data_max_size*)_data)->return_value
                = BView::MaxSize();
            return B_OK;
        case PERFORM_CODE_PREFERRED_SIZE:
            ((perform_data_preferred_size*)_data)->return_value
                = BView::PreferredSize();
            return B_OK;
        case PERFORM_CODE_LAYOUT_ALIGNMENT:
            ((perform_data_layout_alignment*)_data)->return_value
                = BView::LayoutAlignment();
            return B_OK;
        case PERFORM_CODE_HAS_HEIGHT_FOR_WIDTH:
            ((perform_data_has_height_for_width*)_data)->return_value
                = BView::HasHeightForWidth();
            return B_OK;
        case PERFORM_CODE_GET_HEIGHT_FOR_WIDTH:
        {
            perform_data_get_height_for_width* data
                = (perform_data_get_height_for_width*)_data;
            BView::GetHeightForWidth(data->width, &data->min, &data->max,
                &data->preferred);
            return B_OK;
        }
        case PERFORM_CODE_SET_LAYOUT:
        {
            perform_data_set_layout* data = (perform_data_set_layout*)_data;
            BView::SetLayout(data->layout);
            return B_OK;
        }
        case PERFORM_CODE_LAYOUT_INVALIDATED:
        {
            perform_data_layout_invalidated* data
                = (perform_data_layout_invalidated*)_data;
            BView::LayoutInvalidated(data->descendants);
            return B_OK;
        }
        case PERFORM_CODE_DO_LAYOUT:
        {
            BView::DoLayout();
            return B_OK;
        }
        case PERFORM_CODE_LAYOUT_CHANGED:
        {
            BView::LayoutChanged();
            return B_OK;
        }
        case PERFORM_CODE_GET_TOOL_TIP_AT:
        {
            perform_data_get_tool_tip_at* data
                = (perform_data_get_tool_tip_at*)_data;
            data->return_value
                = BView::GetToolTipAt(data->point, data->tool_tip);
            return B_OK;
        }
        case PERFORM_CODE_ALL_UNARCHIVED:
        {
            perform_data_all_unarchived* data =
                (perform_data_all_unarchived*)_data;

            data->return_value = BView::AllUnarchived(data->archive);
            return B_OK;
        }
        case PERFORM_CODE_ALL_ARCHIVED:
        {
            perform_data_all_archived* data =
                (perform_data_all_archived*)_data;

            data->return_value = BView::AllArchived(data->archive);
            return B_OK;
        }
    }

    return BHandler::Perform(code, _data);
}


// #pragma mark - Layout Functions


BSize
BView::MinSize()
{
    // TODO: make sure this works correctly when some methods are overridden
    float width, height;
    GetPreferredSize(&width, &height);

    return BLayoutUtils::ComposeSize(fLayoutData->fMinSize,
        (fLayoutData->fLayout ? fLayoutData->fLayout->MinSize()
            : BSize(width, height)));
}


BSize
BView::MaxSize()
{
    return BLayoutUtils::ComposeSize(fLayoutData->fMaxSize,
        (fLayoutData->fLayout ? fLayoutData->fLayout->MaxSize()
            : BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED)));
}


BSize
BView::PreferredSize()
{
    // TODO: make sure this works correctly when some methods are overridden
    float width, height;
    GetPreferredSize(&width, &height);

    return BLayoutUtils::ComposeSize(fLayoutData->fPreferredSize,
        (fLayoutData->fLayout ? fLayoutData->fLayout->PreferredSize()
            : BSize(width, height)));
}


BAlignment
BView::LayoutAlignment()
{
    return BLayoutUtils::ComposeAlignment(fLayoutData->fAlignment,
        (fLayoutData->fLayout ? fLayoutData->fLayout->Alignment()
            : BAlignment(B_ALIGN_HORIZONTAL_CENTER, B_ALIGN_VERTICAL_CENTER)));
}


void
BView::SetExplicitMinSize(BSize size)
{
    fLayoutData->fMinSize = size;
    InvalidateLayout();
}


void
BView::SetExplicitMaxSize(BSize size)
{
    fLayoutData->fMaxSize = size;
    InvalidateLayout();
}


void
BView::SetExplicitPreferredSize(BSize size)
{
    fLayoutData->fPreferredSize = size;
    InvalidateLayout();
}


void
BView::SetExplicitSize(BSize size)
{
    fLayoutData->fMinSize = size;
    fLayoutData->fMaxSize = size;
    fLayoutData->fPreferredSize = size;
    InvalidateLayout();
}


void
BView::SetExplicitAlignment(BAlignment alignment)
{
    fLayoutData->fAlignment = alignment;
    InvalidateLayout();
}


BSize
BView::ExplicitMinSize() const
{
    return fLayoutData->fMinSize;
}


BSize
BView::ExplicitMaxSize() const
{
    return fLayoutData->fMaxSize;
}


BSize
BView::ExplicitPreferredSize() const
{
    return fLayoutData->fPreferredSize;
}


BAlignment
BView::ExplicitAlignment() const
{
    return fLayoutData->fAlignment;
}


bool
BView::HasHeightForWidth()
{
    return (fLayoutData->fLayout
        ? fLayoutData->fLayout->HasHeightForWidth() : false);
}


void
BView::GetHeightForWidth(float width, float* min, float* max, float* preferred)
{
    if (fLayoutData->fLayout)
        fLayoutData->fLayout->GetHeightForWidth(width, min, max, preferred);
}


void
BView::SetLayout(BLayout* layout)
{
    if (layout == fLayoutData->fLayout)
        return;

    if (layout && layout->Layout())
        debugger("BView::SetLayout() failed, layout is already in use.");

    fFlags |= B_SUPPORTS_LAYOUT;

    // unset and delete the old layout
    if (fLayoutData->fLayout) {
        fLayoutData->fLayout->RemoveSelf();
        fLayoutData->fLayout->SetOwner(NULL);
        delete fLayoutData->fLayout;
    }

    fLayoutData->fLayout = layout;

    if (fLayoutData->fLayout) {
        fLayoutData->fLayout->SetOwner(this);

        // add all children
        int count = CountChildren();
        for (int i = 0; i < count; i++)
            fLayoutData->fLayout->AddView(ChildAt(i));
    }

    InvalidateLayout();
}


BLayout*
BView::GetLayout() const
{
    return fLayoutData->fLayout;
}


void
BView::InvalidateLayout(bool descendants)
{
    // printf("BView(%p)::InvalidateLayout(%i), valid: %i, inProgress: %i\n",
    //  this, descendants, fLayoutData->fLayoutValid,
    //  fLayoutData->fLayoutInProgress);

    if (!fLayoutData->fMinMaxValid || fLayoutData->fLayoutInProgress
            || fLayoutData->fLayoutInvalidationDisabled > 0) {
        return;
    }
    fLayoutData->fLayoutValid = false;
    fLayoutData->fMinMaxValid = false;
    LayoutInvalidated(descendants);

    if (descendants) {
        for (BView* child = fFirstChild;
            child; child = child->fNextSibling) {
            child->InvalidateLayout(descendants);
        }
    }

    if (fLayoutData->fLayout)
        fLayoutData->fLayout->InvalidateLayout(descendants);
    else
        _InvalidateParentLayout();

    if (fTopLevelView
        && fOwner != NULL)
        fOwner->PostMessage(B_LAYOUT_WINDOW);
}


void
BView::EnableLayoutInvalidation()
{
    if (fLayoutData->fLayoutInvalidationDisabled > 0)
        fLayoutData->fLayoutInvalidationDisabled--;
}


void
BView::DisableLayoutInvalidation()
{
    fLayoutData->fLayoutInvalidationDisabled++;
}


bool
BView::IsLayoutInvalidationDisabled()
{
    if (fLayoutData->fLayoutInvalidationDisabled > 0)
        return true;
    return false;
}


bool
BView::IsLayoutValid() const
{
    return fLayoutData->fLayoutValid;
}


void
BView::ResetLayoutInvalidation()
{
    fLayoutData->fMinMaxValid = true;
}


BLayoutContext*
BView::LayoutContext() const
{
    return fLayoutData->fLayoutContext;
}


void
BView::Layout(bool force)
{
    BLayoutContext context;
    _Layout(force, &context);
}


void
BView::Relayout()
{
    if (fLayoutData->fLayoutValid && !fLayoutData->fLayoutInProgress) {
        fLayoutData->fNeedsRelayout = true;
        if (fLayoutData->fLayout)
            fLayoutData->fLayout->RequireLayout();

        // Layout() is recursive, that is if the parent view is currently laid
        // out, we don't call layout() on this view, but wait for the parent's
        // Layout() to do that for us.
        if (!fParent || !fParent->fLayoutData->fLayoutInProgress)
            Layout(false);
    }
}


void
BView::LayoutInvalidated(bool descendants)
{
    // hook method
}


void
BView::DoLayout()
{
    if (fLayoutData->fLayout)
        fLayoutData->fLayout->_LayoutWithinContext(false, LayoutContext());
}


void
BView::SetToolTip(const char* text)
{
    if (text == NULL || text[0] == '\0') {
        SetToolTip((BToolTip*)NULL);
        return;
    }

    if (BTextToolTip* tip = dynamic_cast<BTextToolTip*>(fToolTip))
        tip->SetText(text);
    else
        SetToolTip(new BTextToolTip(text));
}


void
BView::SetToolTip(BToolTip* tip)
{
    if (fToolTip == tip)
        return;
    else if (tip == NULL)
        HideToolTip();

    if (fToolTip != NULL)
        fToolTip->ReleaseReference();

    fToolTip = tip;

    if (fToolTip != NULL)
        fToolTip->AcquireReference();
}


BToolTip*
BView::ToolTip() const
{
    return fToolTip;
}


void
BView::ShowToolTip(BToolTip* tip)
{
    if (tip == NULL)
        return;

    BPoint where;
    GetMouse(&where, NULL, false);

    BToolTipManager::Manager()->ShowTip(tip, ConvertToScreen(where), this);
}


void
BView::HideToolTip()
{
    BToolTipManager::Manager()->HideTip();
}


bool
BView::GetToolTipAt(BPoint point, BToolTip** _tip)
{
    if (fToolTip != NULL) {
        *_tip = fToolTip;
        return true;
    }

    *_tip = NULL;
    return false;
}


void
BView::LayoutChanged()
{
    // hook method
}


void
BView::_Layout(bool force, BLayoutContext* context)
{
//printf("%p->BView::_Layout(%d, %p)\n", this, force, context);
//printf("  fNeedsRelayout: %d, fLayoutValid: %d, fLayoutInProgress: %d\n",
//fLayoutData->fNeedsRelayout, fLayoutData->fLayoutValid,
//fLayoutData->fLayoutInProgress);
    if (fLayoutData->fNeedsRelayout || !fLayoutData->fLayoutValid || force) {
        fLayoutData->fLayoutValid = false;

        if (fLayoutData->fLayoutInProgress)
            return;

        BLayoutContext* oldContext = fLayoutData->fLayoutContext;
        fLayoutData->fLayoutContext = context;

        fLayoutData->fLayoutInProgress = true;
        DoLayout();
        fLayoutData->fLayoutInProgress = false;

        fLayoutData->fLayoutValid = true;
        fLayoutData->fMinMaxValid = true;
        fLayoutData->fNeedsRelayout = false;

        // layout children
        for(BView* child = fFirstChild; child; child = child->fNextSibling) {
            if (!child->IsHidden(child))
                child->_Layout(force, context);
        }

        LayoutChanged();

        fLayoutData->fLayoutContext = oldContext;

        // invalidate the drawn content, if requested
        if (fFlags & B_INVALIDATE_AFTER_LAYOUT)
            Invalidate();
    }
}


void
BView::_LayoutLeft(BLayout* deleted)
{
    // If our layout is added to another layout (via BLayout::AddItem())
    // then we share ownership of our layout. In the event that our layout gets
    // deleted by the layout it has been added to, this method is called so
    // that we don't double-delete our layout.
    if (fLayoutData->fLayout == deleted)
        fLayoutData->fLayout = NULL;
    InvalidateLayout();
}


void
BView::_InvalidateParentLayout()
{
    if (!fParent)
        return;

    BLayout* layout = fLayoutData->fLayout;
    BLayout* layoutParent = layout ? layout->Layout() : NULL;
    if (layoutParent) {
        layoutParent->InvalidateLayout();
    } else if (fLayoutData->fLayoutItems.CountItems() > 0) {
        int32 count = fLayoutData->fLayoutItems.CountItems();
        for (int32 i = 0; i < count; i++) {
            fLayoutData->fLayoutItems.ItemAt(i)->Layout()->InvalidateLayout();
        }
    } else {
        fParent->InvalidateLayout();
    }
}


//  #pragma mark - Private Functions


void
BView::_InitData(BRect frame, const char* name, uint32 resizingMode,
    uint32 flags)
{
    // Info: The name of the view is set by BHandler constructor

    STRACE(("BView::_InitData: enter\n"));

    // initialize members
    if ((resizingMode & ~_RESIZE_MASK_) || (flags & _RESIZE_MASK_))
        printf("%s BView::_InitData(): resizing mode or flags swapped\n", name);

    // There are applications that swap the resize mask and the flags in the
    // BView constructor. This does not cause problems under BeOS as it just
    // ors the two fields to one 32bit flag.
    // For now we do the same but print the above warning message.
    // TODO: this should be removed at some point and the original
    // version restored:
    // fFlags = (resizingMode & _RESIZE_MASK_) | (flags & ~_RESIZE_MASK_);
    fFlags = resizingMode | flags;

    // handle rounding
    frame.left = roundf(frame.left);
    frame.top = roundf(frame.top);
    frame.right = roundf(frame.right);
    frame.bottom = roundf(frame.bottom);

    fParentOffset.Set(frame.left, frame.top);

    fOwner = NULL;
    fParent = NULL;
    fNextSibling = NULL;
    fPreviousSibling = NULL;
    fFirstChild = NULL;

    fShowLevel = 0;
    fTopLevelView = false;

    fCurrentPicture = NULL;
    fCommArray = NULL;

    fVerScroller = NULL;
    fHorScroller = NULL;

    fIsPrinting = false;
    fAttached = false;

    // TODO: Since we cannot communicate failure, we don't use std::nothrow here
    // TODO: Maybe we could auto-delete those views on AddChild() instead?
    fState = new BPrivate::ViewState;

    fBounds = frame.OffsetToCopy(B_ORIGIN);
    fShelf = NULL;

    fEventMask = 0;
    fEventOptions = 0;
    fMouseEventOptions = 0;

    fLayoutData = new LayoutData;

    fToolTip = NULL;

    if ((flags & B_SUPPORTS_LAYOUT) != 0) {
        SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
        SetLowUIColor(ViewUIColor());
        SetHighUIColor(B_PANEL_TEXT_COLOR);
    }
}


void
BView::_RemoveCommArray()
{
    if (fCommArray) {
        delete [] fCommArray->array;
        delete fCommArray;
        fCommArray = NULL;
    }
}


void
BView::_SetOwner(BWindow* newOwner)
{
    if (!newOwner)
        _RemoveCommArray();

    if (fOwner != newOwner && fOwner) {
        if (fOwner->fFocus == this)
            MakeFocus(false);

        if (fOwner->fLastMouseMovedView == this)
            fOwner->fLastMouseMovedView = NULL;

        fOwner->RemoveHandler(this);
        if (fShelf)
            fOwner->RemoveHandler(fShelf);
    }

    if (newOwner && newOwner != fOwner) {
        newOwner->AddHandler(this);
        if (fShelf)
            newOwner->AddHandler(fShelf);

        if (fTopLevelView)
            SetNextHandler(newOwner);
        else
            SetNextHandler(fParent);
    }

    fOwner = newOwner;

    for (BView* child = fFirstChild; child != NULL; child = child->fNextSibling)
        child->_SetOwner(newOwner);
}


void
BView::_ClipToPicture(BPicture* picture, BPoint where, bool invert, bool sync)
{
    if (!_CheckOwnerLockAndSwitchCurrent())
        return;

    if (picture == NULL) {
        fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_PICTURE);
        fOwner->fLink->Attach<int32>(-1);

        // NOTE: No need to sync here, since the -1 token cannot
        // become invalid on the server.
    } else {
        fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_PICTURE);
        fOwner->fLink->Attach<int32>(picture->Token());
        fOwner->fLink->Attach<BPoint>(where);
        fOwner->fLink->Attach<bool>(invert);

        // NOTE: "sync" defaults to true in public methods. If you know what
        // you are doing, i.e. if you know your BPicture stays valid, you
        // can avoid the performance impact of syncing. In a use-case where
        // the client creates BPictures on the stack, these BPictures may
        // have issued a AS_DELETE_PICTURE command to the ServerApp when Draw()
        // goes out of scope, and the command is processed earlier in the
        // ServerApp thread than the AS_VIEW_CLIP_TO_PICTURE command in the
        // ServerWindow thread, which will then have the result that no
        // ServerPicture is found of the token.
        if (sync)
            Sync();
    }
}


void
BView::_ClipToRect(BRect rect, bool inverse)
{
    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_RECT);
        fOwner->fLink->Attach<bool>(inverse);
        fOwner->fLink->Attach<BRect>(rect);
        _FlushIfNotInTransaction();
    }
}


void
BView::_ClipToShape(BShape* shape, bool inverse)
{
    if (shape == NULL)
        return;

    shape_data* sd = (shape_data*)shape->fPrivateData;
    if (sd->opCount == 0 || sd->ptCount == 0)
        return;

    if (_CheckOwnerLockAndSwitchCurrent()) {
        fOwner->fLink->StartMessage(AS_VIEW_CLIP_TO_SHAPE);
        fOwner->fLink->Attach<bool>(inverse);
        fOwner->fLink->Attach<int32>(sd->opCount);
        fOwner->fLink->Attach<int32>(sd->ptCount);
        fOwner->fLink->Attach(sd->opList, sd->opCount * sizeof(uint32));
        fOwner->fLink->Attach(sd->ptList, sd->ptCount * sizeof(BPoint));
        _FlushIfNotInTransaction();
    }
}


bool
BView::_RemoveChildFromList(BView* child)
{
    if (child->fParent != this)
        return false;

    if (fFirstChild == child) {
        // it's the first view in the list
        fFirstChild = child->fNextSibling;
    } else {
        // there must be a previous sibling
        child->fPreviousSibling->fNextSibling = child->fNextSibling;
    }

    if (child->fNextSibling)
        child->fNextSibling->fPreviousSibling = child->fPreviousSibling;

    child->fParent = NULL;
    child->fNextSibling = NULL;
    child->fPreviousSibling = NULL;

    return true;
}


bool
BView::_AddChildToList(BView* child, BView* before)
{
    if (!child)
        return false;
    if (child->fParent != NULL) {
        debugger("View already belongs to someone else");
        return false;
    }
    if (before != NULL && before->fParent != this) {
        debugger("Invalid before view");
        return false;
    }

    if (before != NULL) {
        // add view before this one
        child->fNextSibling = before;
        child->fPreviousSibling = before->fPreviousSibling;
        if (child->fPreviousSibling != NULL)
            child->fPreviousSibling->fNextSibling = child;

        before->fPreviousSibling = child;
        if (fFirstChild == before)
            fFirstChild = child;
    } else {
        // add view to the end of the list
        BView* last = fFirstChild;
        while (last != NULL && last->fNextSibling != NULL) {
            last = last->fNextSibling;
        }

        if (last != NULL) {
            last->fNextSibling = child;
            child->fPreviousSibling = last;
        } else {
            fFirstChild = child;
            child->fPreviousSibling = NULL;
        }

        child->fNextSibling = NULL;
    }

    child->fParent = this;
    return true;
}


/*! \brief Creates the server counterpart of this view.
    This is only done for views that are part of the view hierarchy, ie. when
    they are attached to a window.
    RemoveSelf() deletes the server object again.
*/
bool
BView::_CreateSelf()
{
    // AS_VIEW_CREATE & AS_VIEW_CREATE_ROOT do not use the
    // current view mechanism via _CheckLockAndSwitchCurrent() - the token
    // of the view and its parent are both send to the server.

    if (fTopLevelView)
        fOwner->fLink->StartMessage(AS_VIEW_CREATE_ROOT);
    else
        fOwner->fLink->StartMessage(AS_VIEW_CREATE);

    fOwner->fLink->Attach<int32>(_get_object_token_(this));
    fOwner->fLink->AttachString(Name());
    fOwner->fLink->Attach<BRect>(Frame());
    fOwner->fLink->Attach<BPoint>(LeftTop());
    fOwner->fLink->Attach<uint32>(ResizingMode());
    fOwner->fLink->Attach<uint32>(fEventMask);
    fOwner->fLink->Attach<uint32>(fEventOptions);
    fOwner->fLink->Attach<uint32>(Flags());
    fOwner->fLink->Attach<bool>(IsHidden(this));
    fOwner->fLink->Attach<rgb_color>(fState->view_color);
    if (fTopLevelView)
        fOwner->fLink->Attach<int32>(B_NULL_TOKEN);
    else
        fOwner->fLink->Attach<int32>(_get_object_token_(fParent));
    fOwner->fLink->Flush();

    _CheckOwnerLockAndSwitchCurrent();
    fState->UpdateServerState(*fOwner->fLink);

    // we create all its children, too

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        child->_CreateSelf();
    }

    fOwner->fLink->Flush();
    return true;
}


/*! Sets the new view position.
    It doesn't contact the server, though - the only case where this
    is called outside of MoveTo() is as reaction of moving a view
    in the server (a.k.a. B_WINDOW_RESIZED).
    It also calls the BView's FrameMoved() hook.
*/
void
BView::_MoveTo(int32 x, int32 y)
{
    fParentOffset.Set(x, y);

    if (Window() != NULL && fFlags & B_FRAME_EVENTS) {
        BMessage moved(B_VIEW_MOVED);
        moved.AddInt64("when", system_time());
        moved.AddPoint("where", BPoint(x, y));

        BMessenger target(this);
        target.SendMessage(&moved);
    }
}


/*! Computes the actual new frame size and recalculates the size of
    the children as well.
    It doesn't contact the server, though - the only case where this
    is called outside of ResizeBy() is as reaction of resizing a view
    in the server (a.k.a. B_WINDOW_RESIZED).
    It also calls the BView's FrameResized() hook.
*/
void
BView::_ResizeBy(int32 deltaWidth, int32 deltaHeight)
{
    fBounds.right += deltaWidth;
    fBounds.bottom += deltaHeight;

    if (Window() == NULL) {
        // we're not supposed to exercise the resizing code in case
        // we haven't been attached to a window yet
        return;
    }

    // layout the children
    if ((fFlags & B_SUPPORTS_LAYOUT) != 0) {
        Relayout();
    } else {
        for (BView* child = fFirstChild; child; child = child->fNextSibling)
            child->_ParentResizedBy(deltaWidth, deltaHeight);
    }

    if (fFlags & B_FRAME_EVENTS) {
        BMessage resized(B_VIEW_RESIZED);
        resized.AddInt64("when", system_time());
        resized.AddInt32("width", fBounds.IntegerWidth());
        resized.AddInt32("height", fBounds.IntegerHeight());

        BMessenger target(this);
        target.SendMessage(&resized);
    }
}


/*! Relayouts the view according to its resizing mode. */
void
BView::_ParentResizedBy(int32 x, int32 y)
{
    uint32 resizingMode = fFlags & _RESIZE_MASK_;
    BRect newFrame = Frame();

    // follow with left side
    if ((resizingMode & 0x0F00U) == _VIEW_RIGHT_ << 8)
        newFrame.left += x;
    else if ((resizingMode & 0x0F00U) == _VIEW_CENTER_ << 8)
        newFrame.left += x / 2;

    // follow with right side
    if ((resizingMode & 0x000FU) == _VIEW_RIGHT_)
        newFrame.right += x;
    else if ((resizingMode & 0x000FU) == _VIEW_CENTER_)
        newFrame.right += x / 2;

    // follow with top side
    if ((resizingMode & 0xF000U) == _VIEW_BOTTOM_ << 12)
        newFrame.top += y;
    else if ((resizingMode & 0xF000U) == _VIEW_CENTER_ << 12)
        newFrame.top += y / 2;

    // follow with bottom side
    if ((resizingMode & 0x00F0U) == _VIEW_BOTTOM_ << 4)
        newFrame.bottom += y;
    else if ((resizingMode & 0x00F0U) == _VIEW_CENTER_ << 4)
        newFrame.bottom += y / 2;

    if (newFrame.LeftTop() != fParentOffset) {
        // move view
        _MoveTo((int32)roundf(newFrame.left), (int32)roundf(newFrame.top));
    }

    if (newFrame != Frame()) {
        // resize view
        int32 widthDiff = (int32)(newFrame.Width() - fBounds.Width());
        int32 heightDiff = (int32)(newFrame.Height() - fBounds.Height());
        _ResizeBy(widthDiff, heightDiff);
    }
}


void
BView::_Activate(bool active)
{
    WindowActivated(active);

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        child->_Activate(active);
    }
}


void
BView::_Attach()
{
    if (fOwner != NULL) {
        // unmask state flags to force [re]syncing with the app_server
        fState->valid_flags &= ~(B_VIEW_WHICH_VIEW_COLOR_BIT
            | B_VIEW_WHICH_LOW_COLOR_BIT | B_VIEW_WHICH_HIGH_COLOR_BIT);

        if (fState->which_view_color != B_NO_COLOR)
            SetViewUIColor(fState->which_view_color,
                fState->which_view_color_tint);

        if (fState->which_high_color != B_NO_COLOR)
            SetHighUIColor(fState->which_high_color,
                fState->which_high_color_tint);

        if (fState->which_low_color != B_NO_COLOR)
            SetLowUIColor(fState->which_low_color,
                fState->which_low_color_tint);
    }

    AttachedToWindow();

    fAttached = true;

    // after giving the view a chance to do this itself,
    // check for the B_PULSE_NEEDED flag and make sure the
    // window set's up the pulse messaging
    if (fOwner) {
        if (fFlags & B_PULSE_NEEDED) {
            _CheckLock();
            if (fOwner->fPulseRunner == NULL)
                fOwner->SetPulseRate(fOwner->PulseRate());
        }

        if (!fOwner->IsHidden())
            Invalidate();
    }

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        // we need to check for fAttached as new views could have been
        // added in AttachedToWindow() - and those are already attached
        if (!child->fAttached)
            child->_Attach();
    }

    AllAttached();
}


void
BView::_ColorsUpdated(BMessage* message)
{
    if (fTopLevelView
        && fLayoutData->fLayout != NULL
        && !fState->IsValid(B_VIEW_WHICH_VIEW_COLOR_BIT)) {
        SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
        SetHighUIColor(B_PANEL_TEXT_COLOR);
    }

    rgb_color color;

    const char* colorName = ui_color_name(fState->which_view_color);
    if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
        fState->view_color = tint_color(color, fState->which_view_color_tint);
        fState->valid_flags |= B_VIEW_VIEW_COLOR_BIT;
    }

    colorName = ui_color_name(fState->which_low_color);
    if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
        fState->low_color = tint_color(color, fState->which_low_color_tint);
        fState->valid_flags |= B_VIEW_LOW_COLOR_BIT;
    }

    colorName = ui_color_name(fState->which_high_color);
    if (colorName != NULL && message->FindColor(colorName, &color) == B_OK) {
        fState->high_color = tint_color(color, fState->which_high_color_tint);
        fState->valid_flags |= B_VIEW_HIGH_COLOR_BIT;
    }

    MessageReceived(message);

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling)
        child->_ColorsUpdated(message);

    Invalidate();
}


void
BView::_Detach()
{
    DetachedFromWindow();
    fAttached = false;

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        child->_Detach();
    }

    AllDetached();

    if (fOwner) {
        _CheckLock();

        if (!fOwner->IsHidden())
            Invalidate();

        // make sure our owner doesn't need us anymore

        if (fOwner->CurrentFocus() == this) {
            MakeFocus(false);
            // MakeFocus() is virtual and might not be
            // passing through to the BView version,
            // but we need to make sure at this point
            // that we are not the focus view anymore.
            if (fOwner->CurrentFocus() == this)
                fOwner->_SetFocus(NULL, true);
        }

        if (fOwner->fDefaultButton == this)
            fOwner->SetDefaultButton(NULL);

        if (fOwner->fKeyMenuBar == this)
            fOwner->fKeyMenuBar = NULL;

        if (fOwner->fLastMouseMovedView == this)
            fOwner->fLastMouseMovedView = NULL;

        if (fOwner->fLastViewToken == _get_object_token_(this))
            fOwner->fLastViewToken = B_NULL_TOKEN;

        _SetOwner(NULL);
    }
}


void
BView::_Draw(BRect updateRect)
{
    if (IsHidden(this) || !(Flags() & B_WILL_DRAW))
        return;

    // NOTE: if ViewColor() == B_TRANSPARENT_COLOR and no B_WILL_DRAW
    // -> View is simply not drawn at all

    _SwitchServerCurrentView();

    ConvertFromScreen(&updateRect);

    // TODO: make states robust (the hook implementation could
    // mess things up if it uses non-matching Push- and PopState(),
    // we would not be guaranteed to still have the same state on
    // the stack after having called Draw())
    PushState();
    Draw(updateRect);
    PopState();
    Flush();
}


void
BView::_DrawAfterChildren(BRect updateRect)
{
    if (IsHidden(this) || !(Flags() & B_WILL_DRAW)
        || !(Flags() & B_DRAW_ON_CHILDREN))
        return;

    _SwitchServerCurrentView();

    ConvertFromScreen(&updateRect);

    // TODO: make states robust (see above)
    PushState();
    DrawAfterChildren(updateRect);
    PopState();
    Flush();
}


void
BView::_FontsUpdated(BMessage* message)
{
    MessageReceived(message);

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        child->_FontsUpdated(message);
    }
}


void
BView::_Pulse()
{
    if ((Flags() & B_PULSE_NEEDED) != 0)
        Pulse();

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        child->_Pulse();
    }
}


void
BView::_UpdateStateForRemove()
{
    // TODO: _CheckLockAndSwitchCurrent() would be good enough, no?
    if (!_CheckOwnerLockAndSwitchCurrent())
        return;

    fState->UpdateFrom(*fOwner->fLink);
//  if (!fState->IsValid(B_VIEW_FRAME_BIT)) {
//      fOwner->fLink->StartMessage(AS_VIEW_GET_COORD);
//
//      status_t code;
//      if (fOwner->fLink->FlushWithReply(code) == B_OK
//          && code == B_OK) {
//          fOwner->fLink->Read<BPoint>(&fParentOffset);
//          fOwner->fLink->Read<BRect>(&fBounds);
//          fState->valid_flags |= B_VIEW_FRAME_BIT;
//      }
//  }

    // update children as well

    for (BView* child = fFirstChild; child != NULL;
            child = child->fNextSibling) {
        if (child->fOwner)
            child->_UpdateStateForRemove();
    }
}


inline void
BView::_UpdatePattern(::pattern pattern)
{
    if (fState->IsValid(B_VIEW_PATTERN_BIT) && pattern == fState->pattern)
        return;

    if (fOwner) {
        _CheckLockAndSwitchCurrent();

        fOwner->fLink->StartMessage(AS_VIEW_SET_PATTERN);
        fOwner->fLink->Attach< ::pattern>(pattern);

        fState->valid_flags |= B_VIEW_PATTERN_BIT;
    }

    fState->pattern = pattern;
}


void
BView::_FlushIfNotInTransaction()
{
    if (!fOwner->fInTransaction) {
        fOwner->Flush();
    }
}


BShelf*
BView::_Shelf() const
{
    return fShelf;
}


void
BView::_SetShelf(BShelf* shelf)
{
    if (fShelf != NULL && fOwner != NULL)
        fOwner->RemoveHandler(fShelf);

    fShelf = shelf;

    if (fShelf != NULL && fOwner != NULL)
        fOwner->AddHandler(fShelf);
}


status_t
BView::_SetViewBitmap(const BBitmap* bitmap, BRect srcRect, BRect dstRect,
    uint32 followFlags, uint32 options)
{
    if (!_CheckOwnerLockAndSwitchCurrent())
        return B_ERROR;

    int32 serverToken = bitmap ? bitmap->_ServerToken() : -1;

    fOwner->fLink->StartMessage(AS_VIEW_SET_VIEW_BITMAP);
    fOwner->fLink->Attach<int32>(serverToken);
    fOwner->fLink->Attach<BRect>(srcRect);
    fOwner->fLink->Attach<BRect>(dstRect);
    fOwner->fLink->Attach<int32>(followFlags);
    fOwner->fLink->Attach<int32>(options);

    status_t status = B_ERROR;
    fOwner->fLink->FlushWithReply(status);

    return status;
}


bool
BView::_CheckOwnerLockAndSwitchCurrent() const
{
    STRACE(("BView(%s)::_CheckOwnerLockAndSwitchCurrent()\n", Name()));

    if (fOwner == NULL) {
        debugger("View method requires owner and doesn't have one.");
        return false;
    }

    _CheckLockAndSwitchCurrent();

    return true;
}


bool
BView::_CheckOwnerLock() const
{
    if (fOwner) {
        fOwner->check_lock();
        return true;
    } else {
        debugger("View method requires owner and doesn't have one.");
        return false;
    }
}


void
BView::_CheckLockAndSwitchCurrent() const
{
    STRACE(("BView(%s)::_CheckLockAndSwitchCurrent()\n", Name()));

    if (!fOwner)
        return;

    fOwner->check_lock();

    _SwitchServerCurrentView();
}


void
BView::_CheckLock() const
{
    if (fOwner)
        fOwner->check_lock();
}


void
BView::_SwitchServerCurrentView() const
{
    int32 serverToken = _get_object_token_(this);

    if (fOwner->fLastViewToken != serverToken) {
        STRACE(("contacting app_server... sending token: %" B_PRId32 "\n",
            serverToken));
        fOwner->fLink->StartMessage(AS_SET_CURRENT_VIEW);
        fOwner->fLink->Attach<int32>(serverToken);

        fOwner->fLastViewToken = serverToken;
    }
}


status_t
BView::ScrollWithMouseWheelDelta(BScrollBar* scrollBar, float delta)
{
    if (scrollBar == NULL || delta == 0.0f)
        return B_BAD_VALUE;

    float smallStep;
    float largeStep;
    scrollBar->GetSteps(&smallStep, &largeStep);

    // pressing the shift key scrolls faster (following the pseudo-standard set
    // by other desktop environments).
    if ((modifiers() & B_SHIFT_KEY) != 0)
        delta *= largeStep;
    else
        delta *= smallStep * 3;

    scrollBar->SetValue(scrollBar->Value() + delta);

    return B_OK;
}


#if __GNUC__ == 2


extern "C" void
_ReservedView1__5BView(BView* view, BRect rect)
{
    view->BView::DrawAfterChildren(rect);
}


extern "C" void
_ReservedView2__5BView(BView* view)
{
    // MinSize()
    perform_data_min_size data;
    view->Perform(PERFORM_CODE_MIN_SIZE, &data);
}


extern "C" void
_ReservedView3__5BView(BView* view)
{
    // MaxSize()
    perform_data_max_size data;
    view->Perform(PERFORM_CODE_MAX_SIZE, &data);
}


extern "C" BSize
_ReservedView4__5BView(BView* view)
{
    // PreferredSize()
    perform_data_preferred_size data;
    view->Perform(PERFORM_CODE_PREFERRED_SIZE, &data);
    return data.return_value;
}


extern "C" BAlignment
_ReservedView5__5BView(BView* view)
{
    // LayoutAlignment()
    perform_data_layout_alignment data;
    view->Perform(PERFORM_CODE_LAYOUT_ALIGNMENT, &data);
    return data.return_value;
}


extern "C" bool
_ReservedView6__5BView(BView* view)
{
    // HasHeightForWidth()
    perform_data_has_height_for_width data;
    view->Perform(PERFORM_CODE_HAS_HEIGHT_FOR_WIDTH, &data);
    return data.return_value;
}


extern "C" void
_ReservedView7__5BView(BView* view, float width, float* min, float* max,
    float* preferred)
{
    // GetHeightForWidth()
    perform_data_get_height_for_width data;
    data.width = width;
    view->Perform(PERFORM_CODE_GET_HEIGHT_FOR_WIDTH, &data);
    if (min != NULL)
        *min = data.min;
    if (max != NULL)
        *max = data.max;
    if (preferred != NULL)
        *preferred = data.preferred;
}


extern "C" void
_ReservedView8__5BView(BView* view, BLayout* layout)
{
    // SetLayout()
    perform_data_set_layout data;
    data.layout = layout;
    view->Perform(PERFORM_CODE_SET_LAYOUT, &data);
}


extern "C" void
_ReservedView9__5BView(BView* view, bool descendants)
{
    // LayoutInvalidated()
    perform_data_layout_invalidated data;
    data.descendants = descendants;
    view->Perform(PERFORM_CODE_LAYOUT_INVALIDATED, &data);
}


extern "C" void
_ReservedView10__5BView(BView* view)
{
    // DoLayout()
    view->Perform(PERFORM_CODE_DO_LAYOUT, NULL);
}


#endif  // __GNUC__ == 2


extern "C" bool
B_IF_GCC_2(_ReservedView11__5BView, _ZN5BView15_ReservedView11Ev)(
    BView* view, BPoint point, BToolTip** _toolTip)
{
    // GetToolTipAt()
    perform_data_get_tool_tip_at data;
    data.point = point;
    data.tool_tip = _toolTip;
    view->Perform(PERFORM_CODE_GET_TOOL_TIP_AT, &data);
    return data.return_value;
}


extern "C" void
B_IF_GCC_2(_ReservedView12__5BView, _ZN5BView15_ReservedView12Ev)(
    BView* view)
{
    // LayoutChanged();
    view->Perform(PERFORM_CODE_LAYOUT_CHANGED, NULL);
}


void BView::_ReservedView13() {}
void BView::_ReservedView14() {}
void BView::_ReservedView15() {}
void BView::_ReservedView16() {}


BView::BView(const BView& other)
    :
    BHandler()
{
    // this is private and not functional, but exported
}


BView&
BView::operator=(const BView& other)
{
    // this is private and not functional, but exported
    return *this;
}


void
BView::_PrintToStream()
{
    printf("BView::_PrintToStream()\n");
    printf("\tName: %s\n"
        "\tParent: %s\n"
        "\tFirstChild: %s\n"
        "\tNextSibling: %s\n"
        "\tPrevSibling: %s\n"
        "\tOwner(Window): %s\n"
        "\tToken: %" B_PRId32 "\n"
        "\tFlags: %" B_PRId32 "\n"
        "\tView origin: (%f,%f)\n"
        "\tView Bounds rectangle: (%f,%f,%f,%f)\n"
        "\tShow level: %d\n"
        "\tTopView?: %s\n"
        "\tBPicture: %s\n"
        "\tVertical Scrollbar %s\n"
        "\tHorizontal Scrollbar %s\n"
        "\tIs Printing?: %s\n"
        "\tShelf?: %s\n"
        "\tEventMask: %" B_PRId32 "\n"
        "\tEventOptions: %" B_PRId32 "\n",
    Name(),
    fParent ? fParent->Name() : "NULL",
    fFirstChild ? fFirstChild->Name() : "NULL",
    fNextSibling ? fNextSibling->Name() : "NULL",
    fPreviousSibling ? fPreviousSibling->Name() : "NULL",
    fOwner ? fOwner->Name() : "NULL",
    _get_object_token_(this),
    fFlags,
    fParentOffset.x, fParentOffset.y,
    fBounds.left, fBounds.top, fBounds.right, fBounds.bottom,
    fShowLevel,
    fTopLevelView ? "YES" : "NO",
    fCurrentPicture? "YES" : "NULL",
    fVerScroller? "YES" : "NULL",
    fHorScroller? "YES" : "NULL",
    fIsPrinting? "YES" : "NO",
    fShelf? "YES" : "NO",
    fEventMask,
    fEventOptions);

    printf("\tState status:\n"
        "\t\tLocalCoordianteSystem: (%f,%f)\n"
        "\t\tPenLocation: (%f,%f)\n"
        "\t\tPenSize: %f\n"
        "\t\tHighColor: [%d,%d,%d,%d]\n"
        "\t\tLowColor: [%d,%d,%d,%d]\n"
        "\t\tViewColor: [%d,%d,%d,%d]\n"
        "\t\tPattern: %" B_PRIx64 "\n"
        "\t\tDrawingMode: %d\n"
        "\t\tLineJoinMode: %d\n"
        "\t\tLineCapMode: %d\n"
        "\t\tMiterLimit: %f\n"
        "\t\tAlphaSource: %d\n"
        "\t\tAlphaFuntion: %d\n"
        "\t\tScale: %f\n"
        "\t\t(Print)FontAliasing: %s\n"
        "\t\tFont Info:\n",
    fState->origin.x, fState->origin.y,
    fState->pen_location.x, fState->pen_location.y,
    fState->pen_size,
    fState->high_color.red, fState->high_color.blue, fState->high_color.green, fState->high_color.alpha,
    fState->low_color.red, fState->low_color.blue, fState->low_color.green, fState->low_color.alpha,
    fState->view_color.red, fState->view_color.blue, fState->view_color.green, fState->view_color.alpha,
    *((uint64*)&(fState->pattern)),
    fState->drawing_mode,
    fState->line_join,
    fState->line_cap,
    fState->miter_limit,
    fState->alpha_source_mode,
    fState->alpha_function_mode,
    fState->scale,
    fState->font_aliasing? "YES" : "NO");

    fState->font.PrintToStream();

    // TODO: also print the line array.
}


void
BView::_PrintTree()
{
    int32 spaces = 2;
    BView* c = fFirstChild; //c = short for: current
    printf( "'%s'\n", Name() );
    if (c != NULL) {
        while(true) {
            // action block
            {
                for (int i = 0; i < spaces; i++)
                    printf(" ");

                printf( "'%s'\n", c->Name() );
            }

            // go deep
            if (c->fFirstChild) {
                c = c->fFirstChild;
                spaces += 2;
            } else {
                // go right
                if (c->fNextSibling) {
                    c = c->fNextSibling;
                } else {
                    // go up
                    while (!c->fParent->fNextSibling && c->fParent != this) {
                        c = c->fParent;
                        spaces -= 2;
                    }

                    // that enough! We've reached this view.
                    if (c->fParent == this)
                        break;

                    c = c->fParent->fNextSibling;
                    spaces -= 2;
                }
            }
        }
    }
}


// #pragma mark -


BLayoutItem*
BView::Private::LayoutItemAt(int32 index)
{
    return fView->fLayoutData->fLayoutItems.ItemAt(index);
}


int32
BView::Private::CountLayoutItems()
{
    return fView->fLayoutData->fLayoutItems.CountItems();
}


void
BView::Private::RegisterLayoutItem(BLayoutItem* item)
{
    fView->fLayoutData->fLayoutItems.AddItem(item);
}


void
BView::Private::DeregisterLayoutItem(BLayoutItem* item)
{
    fView->fLayoutData->fLayoutItems.RemoveItem(item);
}


bool
BView::Private::MinMaxValid()
{
    return fView->fLayoutData->fMinMaxValid;
}


bool
BView::Private::WillLayout()
{
    BView::LayoutData* data = fView->fLayoutData;
    if (data->fLayoutInProgress)
        return false;
    if (data->fNeedsRelayout || !data->fLayoutValid || !data->fMinMaxValid)
        return true;
    return false;
}