/* * Copyright (C) 2015 Apple 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 INC. 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 INC. 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 RemoteLayerTreeScrollingPerformanceData_h #define RemoteLayerTreeScrollingPerformanceData_h #import <WebCore/FloatRect.h> #import <wtf/Vector.h> namespace WebKit { class RemoteLayerTreeDrawingAreaProxy; class RemoteLayerTreeScrollingPerformanceData { public: RemoteLayerTreeScrollingPerformanceData(RemoteLayerTreeDrawingAreaProxy&); ~RemoteLayerTreeScrollingPerformanceData(); void didCommitLayerTree(const WebCore::FloatRect& visibleRect); void didScroll(const WebCore::FloatRect& visibleRect); NSArray *data(); // Array of [ time, event type, unfilled pixel count ] private: unsigned blankPixelCount(const WebCore::FloatRect& visibleRect) const; struct BlankPixelCount { enum EventType { Filled, Exposed }; double startTime; double endTime; EventType eventType; unsigned blankPixelCount; BlankPixelCount(double start, double end, EventType type, unsigned count) : startTime(start) , endTime(end) , eventType(type) , blankPixelCount(count) { } bool canCoalesce(BlankPixelCount::EventType, unsigned blankPixelCount) const; }; void appendBlankPixelCount(BlankPixelCount::EventType, unsigned blankPixelCount); RemoteLayerTreeDrawingAreaProxy& m_drawingArea; Vector<BlankPixelCount> m_blankPixelCounts; }; } #endif // RemoteLayerTreeScrollingPerformanceData_h