| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WebLayerTreeView_h |
| #define WebLayerTreeView_h |
| |
| #include "WebColor.h" |
| #include "WebCommon.h" |
| #include "WebCompositorMutatorClient.h" |
| #include "WebEventListenerProperties.h" |
| #include "WebFloatPoint.h" |
| #include "WebNonCopyable.h" |
| #include "WebPrivateOwnPtr.h" |
| #include "WebSize.h" |
| #include "WebTopControlsState.h" |
| |
| class SkBitmap; |
| |
| namespace cc { |
| class AnimationTimeline; |
| } |
| |
| namespace blink { |
| |
| class WebCompositeAndReadbackAsyncCallback; |
| class WebLayer; |
| class WebLayoutAndPaintAsyncCallback; |
| struct WebPoint; |
| struct WebSelectionBound; |
| class WebSelection; |
| class WebWidget; |
| |
| class WebLayerTreeView { |
| public: |
| virtual ~WebLayerTreeView() { } |
| |
| // Initialization and lifecycle -------------------------------------- |
| |
| // Sets the root of the tree. The root is set by way of the constructor. |
| virtual void setRootLayer(const WebLayer&) { } |
| virtual void clearRootLayer() { } |
| |
| // TODO(loyso): These should use CompositorAnimationTimeline. crbug.com/584551 |
| virtual void attachCompositorAnimationTimeline(cc::AnimationTimeline*) { } |
| virtual void detachCompositorAnimationTimeline(cc::AnimationTimeline*) { } |
| |
| // View properties --------------------------------------------------- |
| |
| virtual void setViewportSize(const WebSize& deviceViewportSize) { } |
| |
| virtual void setDeviceScaleFactor(float) { } |
| |
| // Sets the background color for the viewport. |
| virtual void setBackgroundColor(WebColor) { } |
| |
| // Sets the background transparency for the viewport. The default is 'false'. |
| virtual void setHasTransparentBackground(bool) { } |
| |
| // Sets whether this view is visible. In threaded mode, a view that is not visible will not |
| // composite or trigger updateAnimations() or layout() calls until it becomes visible. |
| virtual void setVisible(bool) { } |
| |
| // Sets the current page scale factor and minimum / maximum limits. Both limits are initially 1 (no page scale allowed). |
| virtual void setPageScaleFactorAndLimits(float pageScaleFactor, float minimum, float maximum) { } |
| |
| // Starts an animation of the page scale to a target scale factor and scroll offset. |
| // If useAnchor is true, destination is a point on the screen that will remain fixed for the duration of the animation. |
| // If useAnchor is false, destination is the final top-left scroll position. |
| virtual void startPageScaleAnimation(const WebPoint& destination, bool useAnchor, float newPageScale, double durationSec) { } |
| |
| // Returns true if the page scale animation had started. |
| virtual bool hasPendingPageScaleAnimation() const { return false; } |
| |
| virtual void heuristicsForGpuRasterizationUpdated(bool) { } |
| |
| // Sets the amount that the top controls are showing, from 0 (hidden) to 1 |
| // (fully shown). |
| virtual void setTopControlsShownRatio(float) { } |
| |
| // Update top controls permitted and current states |
| virtual void updateTopControlsState(WebTopControlsState constraints, WebTopControlsState current, bool animate) { } |
| |
| // Set top controls height. If |shrinkViewport| is set to true, then Blink shrunk the viewport clip |
| // layers by the top controls height. |
| virtual void setTopControlsHeight(float height, bool shrinkViewport) { } |
| |
| // Flow control and scheduling --------------------------------------- |
| |
| // Indicates that an animation needs to be updated. |
| // TODO(skyostil): Remove once all callers have migrated to requesting |
| // begin frames or compositor updates. |
| virtual void setNeedsAnimate() { } |
| |
| // Indicates that blink needs a BeginFrame, but that nothing might actually be dirty. |
| virtual void setNeedsBeginFrame() { setNeedsAnimate(); } |
| |
| // Indicates that blink needs a BeginFrame and to update compositor state. |
| virtual void setNeedsCompositorUpdate() { setNeedsAnimate(); } |
| |
| // Relays the end of a fling animation. |
| virtual void didStopFlinging() { } |
| |
| // Run layout and paint of all pending document changes asynchronously. |
| // The caller is resposible for keeping the WebLayoutAndPaintAsyncCallback object |
| // alive until it is called. |
| virtual void layoutAndPaintAsync(WebLayoutAndPaintAsyncCallback*) { } |
| |
| // The caller is responsible for keeping the WebCompositeAndReadbackAsyncCallback |
| // object alive until it is called. |
| virtual void compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback*) { } |
| |
| // Prevents updates to layer tree from becoming visible. |
| virtual void setDeferCommits(bool deferCommits) { } |
| |
| // Identify key layers to the compositor when using the pinch virtual viewport. |
| virtual void registerViewportLayers( |
| const WebLayer* overscrollElasticityLayer, |
| const WebLayer* pageScaleLayer, |
| const WebLayer* innerViewportScrollLayer, |
| const WebLayer* outerViewportScrollLayer) { } |
| virtual void clearViewportLayers() { } |
| |
| // Used to update the active selection bounds. |
| virtual void registerSelection(const WebSelection&) { } |
| virtual void clearSelection() { } |
| |
| // Mutations are plumbed back to the layer tree via the mutator client. |
| virtual void setMutatorClient(std::unique_ptr<WebCompositorMutatorClient>) { } |
| |
| // Input properties --------------------------------------------------- |
| virtual void setEventListenerProperties(WebEventListenerClass, WebEventListenerProperties) { }; |
| virtual void setHaveScrollEventHandlers(bool) { }; |
| |
| // Debugging / dangerous --------------------------------------------- |
| |
| virtual WebEventListenerProperties eventListenerProperties(WebEventListenerClass) const { return WebEventListenerProperties::Nothing; }; |
| virtual bool haveScrollEventHandlers() const { return false; }; |
| |
| virtual int layerTreeId() const { return 0; } |
| |
| // Toggles the FPS counter in the HUD layer |
| virtual void setShowFPSCounter(bool) { } |
| |
| // Toggles the paint rects in the HUD layer |
| virtual void setShowPaintRects(bool) { } |
| |
| // Toggles the debug borders on layers |
| virtual void setShowDebugBorders(bool) { } |
| |
| // Toggles scroll bottleneck rects on the HUD layer |
| virtual void setShowScrollBottleneckRects(bool) { } |
| }; |
| |
| } // namespace blink |
| |
| #endif // WebLayerTreeView_h |