blob: 4c08f5245b4cc2e3e430b2150e11b204a8126c73 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*-*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_LAYER_TREE_INVALIDATION_H
#define GFX_LAYER_TREE_INVALIDATION_H
#include "nsRegion.h" // for nsIntRegion
#include "mozilla/UniquePtr.h" // for UniquePtr
#include "mozilla/gfx/Point.h"
namespace mozilla {
namespace layers {
class Layer;
class ContainerLayer;
/**
* Callback for ContainerLayer invalidations.
*
* @param aContainer ContainerLayer being invalidated.
* @param aRegion Invalidated region in the ContainerLayer's coordinate
* space.
*/
typedef void (*NotifySubDocInvalidationFunc)(ContainerLayer* aLayer,
const nsIntRegion& aRegion);
/**
* A set of cached layer properties (including those of child layers),
* used for comparing differences in layer trees.
*/
struct LayerProperties
{
protected:
LayerProperties() {}
LayerProperties(const LayerProperties& a) = delete;
LayerProperties& operator=(const LayerProperties& a) = delete;
public:
virtual ~LayerProperties() {}
/**
* Copies the current layer tree properties into
* a new LayerProperties object.
*
* @param Layer tree to copy, or nullptr if we have no
* initial layer tree.
*/
static UniquePtr<LayerProperties> CloneFrom(Layer* aRoot);
/**
* Clear all invalidation status from this layer tree.
*/
static void ClearInvalidations(Layer* aRoot);
/**
* Compares a set of existing layer tree properties to the current layer
* tree and generates the changed rectangle.
*
* @param aRoot Root layer of the layer tree to compare against.
* @param aCallback If specified, callback to call when ContainerLayers
* are invalidated.
* @return Painted area changed by the layer tree changes.
*/
virtual nsIntRegion ComputeDifferences(Layer* aRoot,
NotifySubDocInvalidationFunc aCallback,
bool* aGeometryChanged = nullptr) = 0;
virtual void MoveBy(const gfx::IntPoint& aOffset) = 0;
};
} // namespace layers
} // namespace mozilla
#endif /* GFX_LAYER_TREE_INVALIDATON_H */
|
