138 lines
4.1 KiB
Objective-C
138 lines
4.1 KiB
Objective-C
/*
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* Copyright (C) 2011 Apple Inc. All rights reserved.
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*
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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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* are met:
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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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*
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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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*/
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#ifndef LegacyTileGrid_h
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#define LegacyTileGrid_h
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#if PLATFORM(IOS_FAMILY)
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#include "IntPoint.h"
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#include "IntPointHash.h"
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#include "IntRect.h"
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#include "IntSize.h"
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#include "LegacyTileCache.h"
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#include <wtf/HashMap.h>
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#include <wtf/RefPtr.h>
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#include <wtf/RetainPtr.h>
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#define LOG_TILING 0
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@class CALayer;
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namespace WebCore {
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class LegacyTileGridTile;
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class LegacyTileGrid {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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typedef IntPoint TileIndex;
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LegacyTileGrid(LegacyTileCache&, const IntSize&);
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~LegacyTileGrid();
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LegacyTileCache& tileCache() const { return m_tileCache; }
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CALayer *tileHostLayer() const;
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IntRect bounds() const;
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unsigned tileCount() const;
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float scale() const { return m_scale; }
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void setScale(float scale) { m_scale = scale; }
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IntRect visibleRect() const;
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void createTiles(LegacyTileCache::SynchronousTileCreationMode);
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void dropAllTiles();
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void dropInvalidTiles();
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void dropTilesOutsideRect(const IntRect&);
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void dropTilesIntersectingRect(const IntRect&);
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// Drops tiles that intersect dropRect but do not intersect keepRect.
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void dropTilesBetweenRects(const IntRect& dropRect, const IntRect& keepRect);
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bool dropDistantTiles(unsigned tilesNeeded, double shortestDistance);
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void addTilesCoveringRect(const IntRect&);
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bool tilesCover(const IntRect&) const;
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void centerTileGridOrigin(const IntRect& visibleRect);
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void invalidateTiles(const IntRect& dirtyRect);
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void updateTileOpacity();
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void updateTileBorderVisibility();
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void updateHostLayerSize();
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bool checkDoSingleTileLayout();
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bool hasTiles() const { return !m_tiles.isEmpty(); }
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IntRect calculateCoverRect(const IntRect& visibleRect, bool& centerGrid);
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// Logging
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void dumpTiles();
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private:
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double tileDistance2(const IntRect& visibleRect, const IntRect& tileRect) const;
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unsigned tileByteSize() const;
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void addTileForIndex(const TileIndex&);
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RefPtr<LegacyTileGridTile> tileForIndex(const TileIndex&) const;
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IntRect tileRectForIndex(const TileIndex&) const;
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RefPtr<LegacyTileGridTile> tileForPoint(const IntPoint&) const;
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TileIndex tileIndexForPoint(const IntPoint&) const;
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IntRect adjustCoverRectForPageBounds(const IntRect&) const;
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bool shouldUseMinimalTileCoverage() const;
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private:
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LegacyTileCache& m_tileCache;
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RetainPtr<CALayer> m_tileHostLayer;
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IntPoint m_origin;
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IntSize m_tileSize;
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float m_scale;
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typedef HashMap<TileIndex, RefPtr<LegacyTileGridTile>> TileMap;
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TileMap m_tiles;
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IntRect m_validBounds;
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};
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static inline IntPoint topLeft(const IntRect& rect)
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{
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return rect.location();
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}
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static inline IntPoint bottomRight(const IntRect& rect)
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{
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return IntPoint(rect.maxX() - 1, rect.maxY() - 1);
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}
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} // namespace WebCore
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#endif // PLATFORM(IOS_FAMILY)
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#endif // TileGrid_h
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