| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_OFFSCREEN_CANVAS_PLACEHOLDER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_OFFSCREEN_CANVAS_PLACEHOLDER_H_ |
| |
| #include <memory> |
| #include "base/memory/scoped_refptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/single_thread_task_runner.h" |
| #include "components/viz/common/resources/resource_id.h" |
| #include "third_party/blink/renderer/platform/platform_export.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| #include "third_party/skia/include/core/SkFilterQuality.h" |
| |
| namespace blink { |
| |
| class CanvasResource; |
| class CanvasResourceDispatcher; |
| |
| class PLATFORM_EXPORT OffscreenCanvasPlaceholder { |
| DISALLOW_NEW(); |
| |
| public: |
| ~OffscreenCanvasPlaceholder(); |
| |
| virtual void SetOffscreenCanvasResource(scoped_refptr<CanvasResource>, |
| viz::ResourceId resource_id); |
| void SetOffscreenCanvasDispatcher( |
| base::WeakPtr<CanvasResourceDispatcher>, |
| scoped_refptr<base::SingleThreadTaskRunner>); |
| |
| void ReleaseOffscreenCanvasFrame(); |
| |
| void SetSuspendOffscreenCanvasAnimation(bool); |
| |
| static OffscreenCanvasPlaceholder* GetPlaceholderCanvasById( |
| unsigned placeholder_id); |
| |
| void RegisterPlaceholderCanvas(unsigned placeholder_id); |
| void UnregisterPlaceholderCanvas(); |
| const scoped_refptr<CanvasResource>& OffscreenCanvasFrame() const { |
| return placeholder_frame_; |
| } |
| |
| bool IsOffscreenCanvasRegistered() const { |
| return placeholder_id_ != kNoPlaceholderId; |
| } |
| |
| void UpdateOffscreenCanvasFilterQuality(SkFilterQuality filter_quality); |
| |
| virtual bool HasCanvasCapture() const { return false; } |
| |
| private: |
| bool PostSetSuspendAnimationToOffscreenCanvasThread(bool suspend); |
| |
| // Information about the Offscreen Canvas: |
| scoped_refptr<CanvasResource> placeholder_frame_; |
| base::WeakPtr<CanvasResourceDispatcher> frame_dispatcher_; |
| scoped_refptr<base::SingleThreadTaskRunner> frame_dispatcher_task_runner_; |
| viz::ResourceId placeholder_frame_resource_id_ = viz::kInvalidResourceId; |
| |
| enum { |
| kNoPlaceholderId = -1, |
| }; |
| int placeholder_id_ = kNoPlaceholderId; |
| |
| enum AnimationState { |
| kActiveAnimation, |
| kSuspendedAnimation, |
| kShouldSuspendAnimation, |
| kShouldActivateAnimation, |
| }; |
| AnimationState animation_state_ = kActiveAnimation; |
| base::Optional<SkFilterQuality> filter_quality_ = base::nullopt; |
| }; |
| |
| } // namespace blink |
| |
| #endif |