Appearance: Use a dynamic instead of fixed size for the text preview area.

Fixes #17872.

src/preferences/appearance/FontSelectionView.cpp

@@ -16,6 +16,7 @@
 
 #include <Box.h>
 #include <Catalog.h>
+#include <ControlLook.h>
 #include <GroupLayoutBuilder.h>
 #include <LayoutItem.h>
 #include <Locale.h>
@@ -41,7 +42,6 @@
 
 static const float kMinSize = 8.0;
 static const float kMaxSize = 72.0;
-static const float kPreviewTextWidth = 350.0;
 
 static const char* kPreviewText = B_TRANSLATE_COMMENT(
 	"The quick brown fox jumps over the lazy dog.",
@@ -133,13 +133,15 @@ FontSelectionView::FontSelectionView(const char* name,
 	fPreviewTextView->MakeEditable(false);
 	fPreviewTextView->MakeSelectable(false);
 	fPreviewTextView->SetInsets(0, 0, 0, 0);
-	fPreviewTextView->SetViewColor(ViewColor());
-	fPreviewTextView->SetLowColor(LowColor());
+	fPreviewTextView->SetViewUIColor(ViewUIColor());
+	fPreviewTextView->SetLowUIColor(LowUIColor());
+	fPreviewTextView->SetHighUIColor(HighUIColor());
 
 	// determine initial line count using fCurrentFont
+	fPreviewTextWidth = be_control_look->DefaultLabelSpacing() * 58.0f;
 	float lineCount = ceilf(fCurrentFont.StringWidth(kPreviewText)
-		/ kPreviewTextWidth);
-	fPreviewTextView->SetExplicitSize(BSize(kPreviewTextWidth,
+		/ fPreviewTextWidth);
+	fPreviewTextView->SetExplicitSize(BSize(fPreviewTextWidth,
 		fPreviewTextView->LineHeight(0) * lineCount));
 
 	// box around preview
@@ -304,7 +306,7 @@ FontSelectionView::_UpdateFontPreview()
 #endif
 
 	fPreviewTextView->SetFontAndColor(&fCurrentFont);
-	fPreviewTextView->SetExplicitSize(BSize(kPreviewTextWidth,
+	fPreviewTextView->SetExplicitSize(BSize(fPreviewTextWidth,
 		fPreviewTextView->LineHeight(0) * fPreviewTextView->CountLines()));
 }
 
@@ -447,10 +449,6 @@ FontSelectionView::UpdateFontsMenu()
 			continue;
 		}
 
-		float width = font.StringWidth(family);
-		if (width > fMaxFontNameWidth)
-			fMaxFontNameWidth = width;
-
 		BMenu* stylesMenu = new BMenu(family);
 		stylesMenu->SetRadioMode(true);
 		stylesMenu->SetFont(&font);

src/preferences/appearance/FontSelectionView.h

@@ -66,10 +66,10 @@ protected:
 
 			BBox*				fPreviewBox;
 			BTextView*			fPreviewTextView;
+			float				fPreviewTextWidth;
 
 			BFont				fSavedFont;
 			BFont				fCurrentFont;
-			float				fMaxFontNameWidth;
 };
 
 #endif	// FONT_SELECTION_VIEW_H