| // 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 ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_CONSUMER_H_ |
| #define ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_CONSUMER_H_ |
| |
| #include "android_webview/browser/child_frame.h" |
| #include "android_webview/browser/parent_compositor_draw_constraints.h" |
| #include "ui/gfx/geometry/vector2d.h" |
| |
| namespace android_webview { |
| |
| class ChildFrame; |
| class CompositorFrameProducer; |
| |
| class CompositorFrameConsumer { |
| public: |
| // A CompositorFrameConsumer may be registered with at most one |
| // CompositorFrameProducer. |
| // The producer is responsible for managing the relationship with its |
| // consumers. The only exception to this is when a consumer is explicitly |
| // destroyed, at which point it needs to inform its producer. |
| // In order to register a consumer with a new producer, the current producer |
| // must unregister the consumer, and call SetCompositorProducer(nullptr). |
| virtual void SetCompositorFrameProducer( |
| CompositorFrameProducer* compositor_frame_producer) = 0; |
| virtual void SetScrollOffsetOnUI(gfx::Vector2d scroll_offset) = 0; |
| // Returns uncommitted frame to be returned, if any. |
| virtual std::unique_ptr<ChildFrame> SetFrameOnUI( |
| std::unique_ptr<ChildFrame> frame) = 0; |
| virtual ParentCompositorDrawConstraints GetParentDrawConstraintsOnUI() |
| const = 0; |
| virtual ChildFrameQueue PassUncommittedFrameOnUI() = 0; |
| |
| protected: |
| virtual ~CompositorFrameConsumer() {} |
| }; |
| |
| } // namespace android_webview |
| |
| #endif // ANDROID_WEBVIEW_BROWSER_COMPOSITOR_FRAME_CONSUMER_H_ |