The Tor Browser / file comparison
comparison: gfx/layers/LayerTreeInvalidation.h
gfx/layers/LayerTreeInvalidation.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:bc1ef215a82e |
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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 GFX_LAYER_TREE_INVALIDATION_H | |
| 7 #define GFX_LAYER_TREE_INVALIDATION_H | |
| 8 | |
| 9 #include "nsRegion.h" // for nsIntRegion | |
| 10 | |
| 11 class nsPresContext; | |
| 12 struct nsIntPoint; | |
| 13 | |
| 14 namespace mozilla { | |
| 15 namespace layers { | |
| 16 | |
| 17 class Layer; | |
| 18 class ContainerLayer; | |
| 19 | |
| 20 /** | |
| 21 * Callback for ContainerLayer invalidations. | |
| 22 * | |
| 23 * @param aContainer ContainerLayer being invalidated. | |
| 24 * @param aRegion Invalidated region in the ContainerLayer's coordinate | |
| 25 * space. | |
| 26 */ | |
| 27 typedef void (*NotifySubDocInvalidationFunc)(ContainerLayer* aLayer, | |
| 28 const nsIntRegion& aRegion); | |
| 29 | |
| 30 /** | |
| 31 * A set of cached layer properties (including those of child layers), | |
| 32 * used for comparing differences in layer trees. | |
| 33 */ | |
| 34 struct LayerProperties | |
| 35 { | |
| 36 virtual ~LayerProperties() {} | |
| 37 | |
| 38 /** | |
| 39 * Copies the current layer tree properties into | |
| 40 * a new LayerProperties object. | |
| 41 * | |
| 42 * @param Layer tree to copy, or nullptr if we have no | |
| 43 * initial layer tree. | |
| 44 */ | |
| 45 static LayerProperties* CloneFrom(Layer* aRoot); | |
| 46 | |
| 47 /** | |
| 48 * Clear all invalidation status from this layer tree. | |
| 49 */ | |
| 50 static void ClearInvalidations(Layer* aRoot); | |
| 51 | |
| 52 /** | |
| 53 * Compares a set of existing layer tree properties to the current layer | |
| 54 * tree and generates the changed rectangle. | |
| 55 * | |
| 56 * @param aRoot Root layer of the layer tree to compare against. | |
| 57 * @param aCallback If specified, callback to call when ContainerLayers | |
| 58 * are invalidated. | |
| 59 * @return Painted area changed by the layer tree changes. | |
| 60 */ | |
| 61 virtual nsIntRegion ComputeDifferences(Layer* aRoot, | |
| 62 NotifySubDocInvalidationFunc aCallback, | |
| 63 bool* aGeometryChanged = nullptr) = 0; | |
| 64 | |
| 65 | |
| 66 virtual void MoveBy(const nsIntPoint& aOffset) = 0; | |
| 67 }; | |
| 68 | |
| 69 } // namespace layers | |
| 70 } // namespace mozilla | |
| 71 | |
| 72 #endif /* GFX_LAYER_TREE_INVALIDATON_H */ |
