Ticket #8440: diskusageinstructions1.diff

src/apps/diskusage/PieView.cpp

@@ -312 +312 @@
                 fWindow->SetRescanEnabled(false);
         } else {
             _DrawPieChart(updateRect);
+            _DrawHelp();
             if (fWindow != NULL)
                 fWindow->SetRescanEnabled(true);
         }
@@ -395 +396 @@
 
     SetHighColor(kPieBGColor);
     FillRect(updateRect);
+    
 
     // constraint proportions
     if (pieRect.Width() > pieRect.Height()) {
@@ -432 +434 @@
     }
 }
 
+void
+PieView::_DrawHelp()
+{
+    BFont font;
+    GetFont(&font);
+    font.SetFace(B_REGULAR_FACE);
+    font.SetSize(ceilf(font.Size() * 0.75));
+    SetFont(&font);
+    struct font_height fh;
+    font.GetHeight(&fh);
+
+    SetHighColor(0,0,0);
+    BString str1 = B_TRANSLATE("Click center area to zoom-out");
+    BString str2 = B_TRANSLATE("Click outer areas to zoom-in"); 
+    float width = StringWidth(str1) + (2 * kSmallVMargin);
+    float height = ceilf(fh.ascent) + ceilf(fh.descent) + ceilf(fh.leading);
+    DrawString(str1, BPoint(Bounds().Width() - width, height));
+    width = StringWidth(str2) + (2 * kSmallVMargin);
+    height += height + 1;
+    DrawString(str2, BPoint(Bounds().Width() - width, height)); 
+}
 
 float
 PieView::_DrawDirectory(BRect b, FileInfo* info, float parentSpan,

src/apps/diskusage/PieView.h

@@ -50 +50 @@
             void                _ShowVolume(BVolume* volume);
             void                _DrawProgressBar(BRect updateRect);
             void                _DrawPieChart(BRect updateRect);
+            void                _DrawHelp();
             float               _DrawDirectory(BRect b, FileInfo* info,
                                     float parentSpan, float beginAngle,
                                     int colorIdx, int level);