DiskUsage: Change background color to parent one

* Fixes #7985.

- GCI 2013

src/apps/diskusage/PieView.cpp

@@ -101,8 +101,8 @@ void
 AppMenuItem::GetContentSize(float* _width, float* _height)
 {
 	if (_width)
-		*_width = fIcon->Bounds().Width() +
-			be_plain_font->StringWidth(Label());
+		*_width = fIcon->Bounds().Width()
+			+ be_plain_font->StringWidth(Label());
 
 	if (_height) {
 		struct font_height fh;
@@ -166,6 +166,8 @@ void
 PieView::AttachedToWindow()
 {
 	fWindow = (MainWindow*)Window();
+	if (Parent())
+		SetViewColor(Parent()->ViewColor());
 }
 
 
@@ -354,8 +356,6 @@ PieView::_DrawProgressBar(BRect updateRect)
 
 	fMouseOverInfo.clear();
 
-	FillRect(updateRect, B_SOLID_LOW);
-
 	// Draw the progress bar.
 	BRect b = Bounds();
 	float bx = floorf((b.left + b.Width() - kProgBarWidth) / 2.0);
@@ -388,9 +388,6 @@ PieView::_DrawPieChart(BRect updateRect)
 
 	pieRect.InsetBy(kPieOuterMargin, kPieOuterMargin);
 
-	SetHighColor(kPieBGColor);
-	FillRect(updateRect);
-
 	// constraint proportions
 	if (pieRect.Width() > pieRect.Height()) {
 		float moveBy = (pieRect.Width() - pieRect.Height()) / 2;
@@ -731,12 +728,10 @@ PieView::_ShowContextMenu(FileInfo* info, BPoint p)
 
 		fMouseOverMenu->RemoveItem(openWith);
 		delete openWith;
-	}
-	else {
+	} else
 		// The file is no longer available.
 		fFileUnavailableMenu->Go(p, false, true, openRect);
 }
-}
 
 
 void