content/canvas/src/CanvasImageCache.h

Thu, 15 Jan 2015 21:03:48 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 21:03:48 +0100
branch
TOR_BUG_9701
changeset 11
deefc01c0e14
permissions
-rw-r--r--

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_ */

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