Moved icon drawing out of the BWindow class and into this BView class to fix the repainting issues.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9828 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/prefs/datatranslations/IconView.cpp

@@ -0,0 +1,66 @@
+/*****************************************************************************/
+// IconView
+// IconView.cpp
+// Author: Michael Wilber
+//
+//
+// This BView based object displays an icon
+//
+//
+// Copyright (C) Haiku, uses the MIT license
+/*****************************************************************************/
+
+#include <stdio.h>
+#include <string.h>
+#include "IconView.h"
+
+IconView::IconView(const BRect &frame, const char *name,
+	uint32 resize, uint32 flags)
+	:	BView(frame, name, resize, flags)
+{
+	fDrawIcon = false;
+	
+	SetDrawingMode(B_OP_OVER);
+		// to preserve transparent areas of the icon
+		
+	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
+
+	fIconBitmap = new BBitmap(BRect(0, 0, B_LARGE_ICON - 1, B_LARGE_ICON - 1), B_CMAP8);
+}
+
+IconView::~IconView()
+{
+	delete fIconBitmap;
+	fIconBitmap = NULL;
+}
+
+bool
+IconView::SetIconFromNodeInfo(BNodeInfo &info)
+{
+	fDrawIcon = false;
+	if (info.GetTrackerIcon(fIconBitmap) != B_OK)
+		return false;
+	
+	fDrawIcon = true;
+	Invalidate();
+	return true;
+}
+
+bool
+IconView::DrawIcon(bool draw)
+{
+	bool prev = fDrawIcon;
+	fDrawIcon = draw;
+	if (prev != fDrawIcon)
+		Invalidate();
+
+	return prev;
+}
+
+void
+IconView::Draw(BRect area)
+{
+	if (fDrawIcon)
+		DrawBitmap(fIconBitmap);
+}
+

src/prefs/datatranslations/IconView.h

@@ -0,0 +1,37 @@
+/*****************************************************************************/
+// IconView
+// IconView.h
+// Author: Michael Wilber
+//
+// This BView based object displays an icon
+//
+// Copyright (C) Haiku, uses the MIT license
+/*****************************************************************************/
+
+#ifndef ICONVIEW_H
+#define ICONVIEW_H
+
+#include <View.h>
+#include <Bitmap.h>
+#include <NodeInfo.h>
+
+class IconView : public BView {
+public:
+	IconView(const BRect &frame, const char *name, uint32 resize, uint32 flags);
+		// sets up the view
+	~IconView();
+	
+	bool DrawIcon(bool draw);
+	
+	bool SetIconFromNodeInfo(BNodeInfo &info);
+
+	virtual	void Draw(BRect area);
+		// draws the icon
+private:
+	BBitmap *fIconBitmap;
+		// the icon
+	bool fDrawIcon;
+		// whether or not the icon is drawn
+};
+
+#endif // #ifndef ICONVIEW_H