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| 1 /* | |
| 2 * Copyright (C) 2012 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | |
| 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | |
| 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
| 23 * THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef TiledBacking_h | |
| 27 #define TiledBacking_h | |
| 28 | |
| 29 #if PLATFORM(MAC) | |
| 30 OBJC_CLASS CALayer; | |
| 31 #endif | |
| 32 | |
| 33 namespace WebCore { | |
| 34 | |
| 35 class IntRect; | |
| 36 | |
| 37 enum ScrollingModeIndication { | |
| 38 MainThreadScrollingBecauseOfStyleIndication, | |
| 39 MainThreadScrollingBecauseOfEventHandlersIndication, | |
| 40 ThreadedScrollingIndication | |
| 41 }; | |
| 42 | |
| 43 class TiledBacking { | |
| 44 public: | |
| 45 virtual ~TiledBacking() { } | |
| 46 | |
| 47 virtual void setVisibleRect(const FloatRect&) = 0; | |
| 48 virtual FloatRect visibleRect() const = 0; | |
| 49 virtual bool tilesWouldChangeForVisibleRect(const FloatRect&) const = 0; | |
| 50 | |
| 51 virtual void setExposedRect(const FloatRect&) = 0; | |
| 52 virtual void setClipsToExposedRect(bool) = 0; | |
| 53 virtual bool clipsToExposedRect() = 0; | |
| 54 | |
| 55 virtual void prepopulateRect(const FloatRect&) = 0; | |
| 56 | |
| 57 virtual void setIsInWindow(bool) = 0; | |
| 58 | |
| 59 enum { | |
| 60 CoverageForVisibleArea = 0, | |
| 61 CoverageForVerticalScrolling = 1 << 0, | |
| 62 CoverageForHorizontalScrolling = 1 << 1, | |
| 63 CoverageForSlowScrolling = 1 << 2, // Indicates that we expect to paint
a lot on scrolling. | |
| 64 CoverageForScrolling = CoverageForVerticalScrolling | CoverageForHorizon
talScrolling | |
| 65 }; | |
| 66 typedef unsigned TileCoverage; | |
| 67 | |
| 68 virtual void setTileCoverage(TileCoverage) = 0; | |
| 69 virtual TileCoverage tileCoverage() const = 0; | |
| 70 | |
| 71 virtual IntSize tileSize() const = 0; | |
| 72 | |
| 73 virtual void forceRepaint() = 0; | |
| 74 | |
| 75 virtual void setScrollingPerformanceLoggingEnabled(bool) = 0; | |
| 76 virtual bool scrollingPerformanceLoggingEnabled() const = 0; | |
| 77 | |
| 78 virtual void setAggressivelyRetainsTiles(bool) = 0; | |
| 79 virtual bool aggressivelyRetainsTiles() const = 0; | |
| 80 | |
| 81 virtual void setUnparentsOffscreenTiles(bool) = 0; | |
| 82 virtual bool unparentsOffscreenTiles() const = 0; | |
| 83 | |
| 84 virtual double retainedTileBackingStoreMemory() const = 0; | |
| 85 | |
| 86 // Exposed for testing | |
| 87 virtual IntRect tileCoverageRect() const = 0; | |
| 88 virtual IntRect tileGridExtent() const = 0; | |
| 89 virtual void setScrollingModeIndication(ScrollingModeIndication) = 0; | |
| 90 | |
| 91 #if PLATFORM(MAC) | |
| 92 virtual CALayer *tiledScrollingIndicatorLayer() = 0; | |
| 93 #endif | |
| 94 }; | |
| 95 | |
| 96 } // namespace WebCore | |
| 97 | |
| 98 #endif // TiledBacking_h | |
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Chromium Code Reviews
Issue 13818029:
Remove TiledBacking / TileCache code (Closed)
Base URL: svn://svn.chromium.org/blink/trunk