The Tor Browser: content/canvas/src/CanvasImageCache.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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_ */

The Tor Browser / file revision