Implement ImageBitmapOptions resize

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 1088 matching lines @@
 FloatSize HTMLCanvasElement::elementSize(const FloatSize&) const
 {
     return FloatSize(width(), height());
 }
 
 IntSize HTMLCanvasElement::bitmapSourceSize() const
 {
     return IntSize(width(), height());
 }
 
-ScriptPromise HTMLCanvasElement::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, int sx, int sy, int sw, int sh, const ImageBitmapOptions& options, ExceptionState& exceptionState)
+ScriptPromise HTMLCanvasElement::createImageBitmap(ScriptState* scriptState, EventTarget& eventTarget, Optional<IntRect> cropRect, const ImageBitmapOptions& options, ExceptionState& exceptionState)
 {
     DCHECK(eventTarget.toLocalDOMWindow());
-    if (!sw || !sh) {
-        exceptionState.throwDOMException(IndexSizeError, String::format("The source %s provided is 0.", sw ? "height" : "width"));
+    if ((cropRect && !ImageBitmap::isSourceSizeValid(cropRect->width(), cropRect->height(), exceptionState))
+        || !ImageBitmap::isSourceSizeValid(bitmapSourceSize().width(), bitmapSourceSize().height(), exceptionState))
         return ScriptPromise();
-    }
-    return ImageBitmapSource::fulfillImageBitmap(scriptState, isPaintable() ? ImageBitmap::create(this, IntRect(sx, sy, sw, sh), options) : nullptr);
+    if (!ImageBitmap::isResizeOptionValid(options, exceptionState))
+        return ScriptPromise();
+    return ImageBitmapSource::fulfillImageBitmap(scriptState, isPaintable() ? ImageBitmap::create(this, cropRect, options) : nullptr);
 }
 
 bool HTMLCanvasElement::isOpaque() const
 {
     return m_context && !m_context->hasAlpha();
 }
 
 bool HTMLCanvasElement::isSupportedInteractiveCanvasFallback(const Element& element)
 {
     if (!element.isDescendantOf(this))
@@ skipping 68 matching lines @@
 
 bool HTMLCanvasElement::createSurfaceLayer()
 {
     DCHECK(!m_surfaceLayerBridge);
     std::unique_ptr<CanvasSurfaceLayerBridgeClient> bridgeClient = wrapUnique(new CanvasSurfaceLayerBridgeClientImpl());
     m_surfaceLayerBridge = wrapUnique(new CanvasSurfaceLayerBridge(std::move(bridgeClient)));
     return m_surfaceLayerBridge->createSurfaceLayer(this->width(), this->height());
 }
 
 } // namespace blink