ShowImage: Set width and height attributes of the showed image.

* Fixes #8745.

src/apps/showimage/ShowImageWindow.cpp

@@ -647,6 +647,9 @@ ShowImageWindow::MessageReceived(BMessage* message)
 				Show();
 			}
 			_UpdateRatingMenu();
+			// Set width and height attributes of the currently showed file.
+			// This should only be a temporary solution.
+			_SaveWidthAndHeight();
 			break;
 		}
 
@@ -1510,6 +1513,29 @@ ShowImageWindow::_UpdateRatingMenu()
 }
 
 
+void
+ShowImageWindow::_SaveWidthAndHeight()
+{
+	if (fNavigator.CurrentPage() != 1)
+		return;
+
+	if (fImageView->Bitmap() == NULL)
+		return;
+
+	BRect bounds = fImageView->Bitmap()->Bounds();
+	int32 width, height;
+    width = bounds.IntegerWidth() + 1;
+	height = bounds.IntegerHeight() + 1;
+
+	BFile file(&fNavigator.CurrentRef(), B_WRITE_ONLY);
+	if (file.InitCheck() != B_OK)
+		return;
+
+	file.WriteAttr("Media:Width", B_INT32_TYPE, 0, &width, sizeof(width));
+	file.WriteAttr("Media:Height", B_INT32_TYPE, 0, &height, sizeof(height));
+}
+
+
 void
 ShowImageWindow::_SetToolBarVisible(bool visible, bool animate)
 {

src/apps/showimage/ShowImageWindow.h

@@ -108,6 +108,8 @@ private:
 									bool animate = false);
 			void				_SetToolBarBorder(bool visible);
 
+			void				_SaveWidthAndHeight();
+
 private:
 			ImageFileNavigator	fNavigator;
 			BFilePanel*			fSavePanel;