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comparison: layout/base/nsDisplayListInvalidation.h
layout/base/nsDisplayListInvalidation.h
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| 1 /*-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef NSDISPLAYLISTINVALIDATION_H_ | |
| 7 #define NSDISPLAYLISTINVALIDATION_H_ | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "nsRect.h" | |
| 11 #include "nsColor.h" | |
| 12 | |
| 13 class nsDisplayItem; | |
| 14 class nsDisplayListBuilder; | |
| 15 class nsDisplayBackgroundImage; | |
| 16 class nsDisplayThemedBackground; | |
| 17 | |
| 18 /** | |
| 19 * This stores the geometry of an nsDisplayItem, and the area | |
| 20 * that will be affected when painting the item. | |
| 21 * | |
| 22 * It is used to retain information about display items so they | |
| 23 * can be compared against new display items in the next paint. | |
| 24 */ | |
| 25 class nsDisplayItemGeometry | |
| 26 { | |
| 27 public: | |
| 28 nsDisplayItemGeometry(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder); | |
| 29 virtual ~nsDisplayItemGeometry(); | |
| 30 | |
| 31 /** | |
| 32 * Compute the area required to be invalidated if this | |
| 33 * display item is removed. | |
| 34 */ | |
| 35 const nsRect& ComputeInvalidationRegion() { return mBounds; } | |
| 36 | |
| 37 /** | |
| 38 * Shifts all retained areas of the nsDisplayItemGeometry by the given offset. | |
| 39 * | |
| 40 * This is used to compensate for scrolling, since the destination buffer | |
| 41 * can scroll without requiring a full repaint. | |
| 42 * | |
| 43 * @param aOffset Offset to shift by. | |
| 44 */ | |
| 45 virtual void MoveBy(const nsPoint& aOffset) = 0; | |
| 46 | |
| 47 /** | |
| 48 * Bounds of the display item | |
| 49 */ | |
| 50 nsRect mBounds; | |
| 51 }; | |
| 52 | |
| 53 /** | |
| 54 * A default geometry implementation, used by nsDisplayItem. Retains | |
| 55 * and compares the bounds, and border rect. | |
| 56 * | |
| 57 * This should be sufficient for the majority of display items. | |
| 58 */ | |
| 59 class nsDisplayItemGenericGeometry : public nsDisplayItemGeometry | |
| 60 { | |
| 61 public: | |
| 62 nsDisplayItemGenericGeometry(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder); | |
| 63 | |
| 64 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 65 | |
| 66 nsRect mBorderRect; | |
| 67 }; | |
| 68 | |
| 69 class nsDisplayItemBoundsGeometry : public nsDisplayItemGeometry | |
| 70 { | |
| 71 public: | |
| 72 nsDisplayItemBoundsGeometry(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder); | |
| 73 | |
| 74 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 75 | |
| 76 bool mHasRoundedCorners; | |
| 77 }; | |
| 78 | |
| 79 class nsDisplayBorderGeometry : public nsDisplayItemGeometry | |
| 80 { | |
| 81 public: | |
| 82 nsDisplayBorderGeometry(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder); | |
| 83 | |
| 84 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 85 | |
| 86 nsRect mContentRect; | |
| 87 }; | |
| 88 | |
| 89 class nsDisplayBackgroundGeometry : public nsDisplayItemGeometry | |
| 90 { | |
| 91 public: | |
| 92 nsDisplayBackgroundGeometry(nsDisplayBackgroundImage* aItem, nsDisplayListBuilder* aBuilder); | |
| 93 | |
| 94 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 95 | |
| 96 nsRect mPositioningArea; | |
| 97 }; | |
| 98 | |
| 99 class nsDisplayThemedBackgroundGeometry : public nsDisplayItemGeometry | |
| 100 { | |
| 101 public: | |
| 102 nsDisplayThemedBackgroundGeometry(nsDisplayThemedBackground* aItem, nsDisplayListBuilder* aBuilder); | |
| 103 | |
| 104 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 105 | |
| 106 nsRect mPositioningArea; | |
| 107 bool mWindowIsActive; | |
| 108 }; | |
| 109 | |
| 110 class nsDisplayBoxShadowInnerGeometry : public nsDisplayItemGeometry | |
| 111 { | |
| 112 public: | |
| 113 nsDisplayBoxShadowInnerGeometry(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder); | |
| 114 | |
| 115 virtual void MoveBy(const nsPoint& aOffset) MOZ_OVERRIDE; | |
| 116 | |
| 117 nsRect mPaddingRect; | |
| 118 }; | |
| 119 | |
| 120 class nsDisplaySolidColorGeometry : public nsDisplayItemBoundsGeometry | |
| 121 { | |
| 122 public: | |
| 123 nsDisplaySolidColorGeometry(nsDisplayItem* aItem, | |
| 124 nsDisplayListBuilder* aBuilder, | |
| 125 nscolor aColor) | |
| 126 : nsDisplayItemBoundsGeometry(aItem, aBuilder) | |
| 127 , mColor(aColor) | |
| 128 { } | |
| 129 | |
| 130 nscolor mColor; | |
| 131 }; | |
| 132 | |
| 133 #endif /*NSDISPLAYLISTINVALIDATION_H_*/ |
