Thu, 15 Jan 2015 21:03:48 +0100
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef CANVASIMAGECACHE_H_
7 #define CANVASIMAGECACHE_H_
9 #include "nsSize.h"
11 namespace mozilla {
12 namespace dom {
13 class Element;
14 class HTMLCanvasElement;
15 } // namespace dom
16 namespace gfx {
17 class SourceSurface;
18 } // namespace gfx
19 } // namespace mozilla
20 class imgIRequest;
22 namespace mozilla {
24 class CanvasImageCache {
25 typedef mozilla::gfx::SourceSurface SourceSurface;
26 public:
27 /**
28 * Notify that image element aImage was (or is about to be) drawn to aCanvas
29 * using the first frame of aRequest's image. The data for the surface is
30 * in aSurface, and the image size is in aSize.
31 */
32 static void NotifyDrawImage(dom::Element* aImage,
33 dom::HTMLCanvasElement* aCanvas,
34 imgIRequest* aRequest,
35 SourceSurface* aSource,
36 const gfxIntSize& aSize);
38 /**
39 * Check whether aImage has recently been drawn into aCanvas. If we return
40 * a non-null surface, then the image was recently drawn into the canvas
41 * (with the same image request) and the returned surface contains the image
42 * data, and the image size will be returned in aSize.
43 */
44 static SourceSurface* Lookup(dom::Element* aImage,
45 dom::HTMLCanvasElement* aCanvas,
46 gfxIntSize* aSize);
47 };
49 }
51 #endif /* CANVASIMAGECACHE_H_ */