/usr/include/thunderbird/mozilla/dom/CanvasRenderingContextHelper.h is in thunderbird-dev 1:52.8.0-1~deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_DOM_CANVASRENDERINGCONTEXTHELPER_H_
#define MOZILLA_DOM_CANVASRENDERINGCONTEXTHELPER_H_
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/layers/LayersTypes.h"
#include "nsSize.h"
class nsICanvasRenderingContextInternal;
class nsIGlobalObject;
namespace mozilla {
class ErrorResult;
namespace dom {
class BlobCallback;
class EncodeCompleteCallback;
enum class CanvasContextType : uint8_t {
NoContext,
Canvas2D,
WebGL1,
WebGL2,
ImageBitmap
};
/**
* Povides common RenderingContext functionality used by both OffscreenCanvas
* and HTMLCanvasElement.
*/
class CanvasRenderingContextHelper
{
public:
virtual already_AddRefed<nsISupports>
GetContext(JSContext* aCx,
const nsAString& aContextId,
JS::Handle<JS::Value> aContextOptions,
ErrorResult& aRv);
virtual bool GetOpaqueAttr() = 0;
protected:
virtual nsresult UpdateContext(JSContext* aCx,
JS::Handle<JS::Value> aNewContextOptions,
ErrorResult& aRvForDictionaryInit);
virtual nsresult ParseParams(JSContext* aCx,
const nsAString& aType,
const JS::Value& aEncoderOptions,
nsAString& outParams,
bool* const outCustomParseOptions);
void ToBlob(JSContext* aCx, nsIGlobalObject* global, BlobCallback& aCallback,
const nsAString& aType, JS::Handle<JS::Value> aParams,
ErrorResult& aRv);
void ToBlob(JSContext* aCx, nsIGlobalObject* aGlobal, EncodeCompleteCallback* aCallback,
const nsAString& aType, JS::Handle<JS::Value> aParams,
ErrorResult& aRv);
virtual already_AddRefed<nsICanvasRenderingContextInternal>
CreateContext(CanvasContextType aContextType);
already_AddRefed<nsICanvasRenderingContextInternal>
CreateContextHelper(CanvasContextType aContextType,
layers::LayersBackend aCompositorBackend);
virtual nsIntSize GetWidthHeight() = 0;
CanvasContextType mCurrentContextType;
nsCOMPtr<nsICanvasRenderingContextInternal> mCurrentContext;
};
} // namespace dom
} // namespace mozilla
#endif // MOZILLA_DOM_CANVASRENDERINGCONTEXTHELPER_H_
|