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* Copyright (C) 2012 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef TiledBacking_h
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#define TiledBacking_h
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virtual ~TiledBacking() { }
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virtual void setVisibleRect(const IntRect&) = 0;
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virtual IntRect visibleRect() const = 0;
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virtual void setIsInWindow(bool) = 0;
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CoverageForVisibleArea = 0,
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CoverageForVerticalScrolling = 1 << 0,
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CoverageForHorizontalScrolling = 1 << 1,
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CoverageForSlowScrolling = 1 << 2, // Indicates that we expect to paint a lot on scrolling.
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CoverageForScrolling = CoverageForVerticalScrolling | CoverageForHorizontalScrolling
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typedef unsigned TileCoverage;
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virtual void setTileCoverage(TileCoverage) = 0;
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virtual TileCoverage tileCoverage() const = 0;
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virtual IntSize tileSize() const = 0;
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virtual void forceRepaint() = 0;
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virtual void setScrollingPerformanceLoggingEnabled(bool) = 0;
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virtual bool scrollingPerformanceLoggingEnabled() const = 0;
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// Exposed for testing
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virtual IntRect tileCoverageRect() const = 0;
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virtual IntRect tileGridExtent() const = 0;
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} // namespace WebCore
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#endif // TiledBacking_h