shared/IconView: Add a variant of SetIcon which directly accepts a BBitmap.

headers/private/shared/IconView.h

@@ -30,6 +30,7 @@ public:
 								icon_size iconSize = B_LARGE_ICON);
 			status_t		SetIcon(const uint8_t* hvifData, size_t size,
 								icon_size iconSize = B_LARGE_ICON);
+			status_t		SetIcon(const BBitmap* icon);
 
 private:
 			void			_SetSize();

src/kits/shared/IconView.cpp

@@ -45,7 +45,7 @@ status_t
 IconView::SetIcon(const BPath& path, icon_size iconSize)
 {
 	fDrawIcon = false;
-	
+
 	if (iconSize != fIconSize) {
 		BBitmap* bitmap = new BBitmap(BRect(iconSize), B_RGBA32);
 		if (bitmap == NULL)
@@ -83,7 +83,7 @@ status_t
 IconView::SetIcon(const uint8_t* data, size_t size, icon_size iconSize)
 {
 	fDrawIcon = false;
-	
+
 	if (iconSize != fIconSize) {
 		BBitmap* bitmap = new BBitmap(BRect(iconSize), B_RGBA32);
 		if (bitmap == NULL)
@@ -113,6 +113,32 @@ IconView::SetIcon(const uint8_t* data, size_t size, icon_size iconSize)
 }
 
 
+status_t
+IconView::SetIcon(const BBitmap* icon)
+{
+	if (icon == NULL) {
+		fDrawIcon = false;
+		return B_OK;
+	}
+
+	delete fIconBitmap;
+	fIconBitmap = new BBitmap(icon);
+	if (fIconBitmap == NULL)
+		return B_NO_MEMORY;
+
+	status_t status = fIconBitmap->InitCheck();
+	if (status != B_OK)
+		return status;
+
+	fIconSize = (icon_size)(fIconBitmap->Bounds().IntegerWidth() + 1);
+	_SetSize();
+
+	fDrawIcon = true;
+	Invalidate();
+	return B_OK;
+}
+
+
 void
 IconView::DrawIcon(bool draw)
 {