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/*
* 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.
*/
#pragma once
#import <WebCore/FloatRect.h>
#import <wtf/Vector.h>
namespace WebKit {
class RemoteLayerTreeDrawingAreaProxy;
class RemoteLayerTreeScrollingPerformanceData {
WTF_MAKE_FAST_ALLOCATED;
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;
};
}
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