fixed WebView.m not to recreate the bitmap for every frame.

agsi-ryan · Sep 1, 2015 · 6d63392 · 6d63392
1 parent 869df13
commit 6d63392
Showing 1 changed file with 6 additions and 9 deletions.
diff --git a/plugins/Mac/Sources/WebView.m b/plugins/Mac/Sources/WebView.m
@@ -212,21 +212,18 @@ - (void)update:(int)x y:(int)y deltaY:(float)deltaY buttonDown:(BOOL)buttonDown
 		[view scrollWheel:scrollEvent];
 	}
 
-	@synchronized(bitmap) {
+	@synchronized(self) {
+		if (bitmap == nil)
+			bitmap = [[webView bitmapImageRepForCachingDisplayInRect:webView.frame] retain];
+		memset([bitmap bitmapData], 0, [bitmap bytesPerRow] * [bitmap pixelsHigh]);
+		[webView cacheDisplayInRect:webView.frame toBitmapImageRep:bitmap];
 		needsDisplay = YES; // TODO (bitmap == nil || [view needsDisplay]);
-		if (needsDisplay) {
-			[bitmap release];
-			bitmap = [[webView
-				bitmapImageRepForCachingDisplayInRect:[webView visibleRect]] retain];
-			[webView cacheDisplayInRect:[webView visibleRect]
-				toBitmapImageRep:bitmap];
-		}
 	}
 }
 
 - (void)render
 {
-	@synchronized(bitmap) {
+	@synchronized(self) {
 		if (!needsDisplay)
 			return;