1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
8 #include "bindings/core/v8/ScriptWrappable.h"
9 #include "core/html/HTMLImageElement.h"
10 #include "core/html/canvas/CanvasImageSource.h"
11 #include "platform/geometry/IntRect.h"
12 #include "platform/graphics/Image.h"
13 #include "platform/heap/Handle.h"
14 #include "wtf/PassRefPtr.h"
15 #include "wtf/RefCounted.h"
19 class HTMLCanvasElement;
20 class HTMLVideoElement;
23 class ImageBitmap final : public RefCountedWillBeGarbageCollectedFinalized<ImageBitmap>, public ScriptWrappable, public ImageLoaderClient, public CanvasImageSource {
24 DEFINE_WRAPPERTYPEINFO();
25 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ImageBitmap);
27 static PassRefPtrWillBeRawPtr<ImageBitmap> create(HTMLImageElement*, const IntRect&);
28 static PassRefPtrWillBeRawPtr<ImageBitmap> create(HTMLVideoElement*, const IntRect&);
29 static PassRefPtrWillBeRawPtr<ImageBitmap> create(HTMLCanvasElement*, const IntRect&);
30 static PassRefPtrWillBeRawPtr<ImageBitmap> create(ImageData*, const IntRect&);
31 static PassRefPtrWillBeRawPtr<ImageBitmap> create(ImageBitmap*, const IntRect&);
32 static PassRefPtrWillBeRawPtr<ImageBitmap> create(Image*, const IntRect&);
34 PassRefPtr<Image> bitmapImage() const;
35 PassRefPtrWillBeRawPtr<HTMLImageElement> imageElement() const { return m_imageElement; }
37 IntRect bitmapRect() const { return m_bitmapRect; }
39 int width() const { return m_cropRect.width(); }
40 int height() const { return m_cropRect.height(); }
41 IntSize size() const { return m_cropRect.size(); }
43 virtual ~ImageBitmap();
45 // CanvasImageSource implementation
46 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const override;
47 virtual bool wouldTaintOrigin(SecurityOrigin*) const override { return false; };
48 virtual void adjustDrawRects(FloatRect* srcRect, FloatRect* dstRect) const override;
49 virtual FloatSize sourceSize() const override;
51 virtual void trace(Visitor*);
54 ImageBitmap(HTMLImageElement*, const IntRect&);
55 ImageBitmap(HTMLVideoElement*, const IntRect&);
56 ImageBitmap(HTMLCanvasElement*, const IntRect&);
57 ImageBitmap(ImageData*, const IntRect&);
58 ImageBitmap(ImageBitmap*, const IntRect&);
59 ImageBitmap(Image*, const IntRect&);
62 virtual void notifyImageSourceChanged() override;
63 virtual bool requestsHighLiveResourceCachePriority() override { return true; }
65 // ImageBitmaps constructed from HTMLImageElements hold a reference to the HTMLImageElement until
66 // the image source changes.
67 RefPtrWillBeMember<HTMLImageElement> m_imageElement;
68 RefPtr<Image> m_bitmap;
70 IntRect m_bitmapRect; // The rect where the underlying Image should be placed in reference to the ImageBitmap.
73 // The offset by which the desired Image is stored internally.
74 // ImageBitmaps constructed from HTMLImageElements reference the entire ImageResource and may have a non-zero bitmap offset.
75 // ImageBitmaps not constructed from HTMLImageElements always pre-crop and store the image at (0, 0).
76 IntPoint m_bitmapOffset;
82 #endif // ImageBitmap_h