gfx/layers/LayerTreeInvalidation.h@6474c204b198 (annotated)
gfx/layers/LayerTreeInvalidation.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /*-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 4 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef GFX_LAYER_TREE_INVALIDATION_H |
| michael@0 | 7 | #define GFX_LAYER_TREE_INVALIDATION_H |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsRegion.h" // for nsIntRegion |
| michael@0 | 10 | |
| michael@0 | 11 | class nsPresContext; |
| michael@0 | 12 | struct nsIntPoint; |
| michael@0 | 13 | |
| michael@0 | 14 | namespace mozilla { |
| michael@0 | 15 | namespace layers { |
| michael@0 | 16 | |
| michael@0 | 17 | class Layer; |
| michael@0 | 18 | class ContainerLayer; |
| michael@0 | 19 | |
| michael@0 | 20 | /** |
| michael@0 | 21 | * Callback for ContainerLayer invalidations. |
| michael@0 | 22 | * |
| michael@0 | 23 | * @param aContainer ContainerLayer being invalidated. |
| michael@0 | 24 | * @param aRegion Invalidated region in the ContainerLayer's coordinate |
| michael@0 | 25 | * space. |
| michael@0 | 26 | */ |
| michael@0 | 27 | typedef void (*NotifySubDocInvalidationFunc)(ContainerLayer* aLayer, |
| michael@0 | 28 | const nsIntRegion& aRegion); |
| michael@0 | 29 | |
| michael@0 | 30 | /** |
| michael@0 | 31 | * A set of cached layer properties (including those of child layers), |
| michael@0 | 32 | * used for comparing differences in layer trees. |
| michael@0 | 33 | */ |
| michael@0 | 34 | struct LayerProperties |
| michael@0 | 35 | { |
| michael@0 | 36 | virtual ~LayerProperties() {} |
| michael@0 | 37 | |
| michael@0 | 38 | /** |
| michael@0 | 39 | * Copies the current layer tree properties into |
| michael@0 | 40 | * a new LayerProperties object. |
| michael@0 | 41 | * |
| michael@0 | 42 | * @param Layer tree to copy, or nullptr if we have no |
| michael@0 | 43 | * initial layer tree. |
| michael@0 | 44 | */ |
| michael@0 | 45 | static LayerProperties* CloneFrom(Layer* aRoot); |
| michael@0 | 46 | |
| michael@0 | 47 | /** |
| michael@0 | 48 | * Clear all invalidation status from this layer tree. |
| michael@0 | 49 | */ |
| michael@0 | 50 | static void ClearInvalidations(Layer* aRoot); |
| michael@0 | 51 | |
| michael@0 | 52 | /** |
| michael@0 | 53 | * Compares a set of existing layer tree properties to the current layer |
| michael@0 | 54 | * tree and generates the changed rectangle. |
| michael@0 | 55 | * |
| michael@0 | 56 | * @param aRoot Root layer of the layer tree to compare against. |
| michael@0 | 57 | * @param aCallback If specified, callback to call when ContainerLayers |
| michael@0 | 58 | * are invalidated. |
| michael@0 | 59 | * @return Painted area changed by the layer tree changes. |
| michael@0 | 60 | */ |
| michael@0 | 61 | virtual nsIntRegion ComputeDifferences(Layer* aRoot, |
| michael@0 | 62 | NotifySubDocInvalidationFunc aCallback, |
| michael@0 | 63 | bool* aGeometryChanged = nullptr) = 0; |
| michael@0 | 64 | |
| michael@0 | 65 | |
| michael@0 | 66 | virtual void MoveBy(const nsIntPoint& aOffset) = 0; |
| michael@0 | 67 | }; |
| michael@0 | 68 | |
| michael@0 | 69 | } // namespace layers |
| michael@0 | 70 | } // namespace mozilla |
| michael@0 | 71 | |
| michael@0 | 72 | #endif /* GFX_LAYER_TREE_INVALIDATON_H */ |
