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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ui/GraphicTypes.h>
#include <ui/Transform.h>
#include "ContainerLayer.h"
#include "DisplayDevice.h"
#include "Layer.h"
#include "LayerRenderArea.h"
#include "SurfaceFlinger.h"
namespace android {
namespace {
void reparentForDrawing(const sp<Layer>& oldParent, const sp<Layer>& newParent,
const Rect& drawingBounds) {
// Compute and cache the bounds for the new parent layer.
newParent->computeBounds(drawingBounds.toFloatRect(), ui::Transform(),
0.f /* shadowRadius */);
oldParent->setChildrenDrawingParent(newParent);
};
} // namespace
LayerRenderArea::LayerRenderArea(SurfaceFlinger& flinger, sp<Layer> layer, const Rect& crop,
ui::Size reqSize, ui::Dataspace reqDataSpace, bool childrenOnly,
const Rect& layerStackRect, bool allowSecureLayers)
: RenderArea(reqSize, CaptureFill::CLEAR, reqDataSpace, layerStackRect, allowSecureLayers),
mLayer(std::move(layer)),
mCrop(crop),
mFlinger(flinger),
mChildrenOnly(childrenOnly) {}
const ui::Transform& LayerRenderArea::getTransform() const {
return mTransform;
}
Rect LayerRenderArea::getBounds() const {
return mLayer->getBufferSize(mLayer->getDrawingState());
}
int LayerRenderArea::getHeight() const {
return mLayer->getBufferSize(mLayer->getDrawingState()).getHeight();
}
int LayerRenderArea::getWidth() const {
return mLayer->getBufferSize(mLayer->getDrawingState()).getWidth();
}
bool LayerRenderArea::isSecure() const {
return mAllowSecureLayers;
}
bool LayerRenderArea::needsFiltering() const {
return mNeedsFiltering;
}
sp<const DisplayDevice> LayerRenderArea::getDisplayDevice() const {
return nullptr;
}
Rect LayerRenderArea::getSourceCrop() const {
if (mCrop.isEmpty()) {
return getBounds();
} else {
return mCrop;
}
}
void LayerRenderArea::render(std::function<void()> drawLayers) {
using namespace std::string_literals;
const Rect sourceCrop = getSourceCrop();
// no need to check rotation because there is none
mNeedsFiltering = sourceCrop.width() != getReqWidth() || sourceCrop.height() != getReqHeight();
// If layer is offscreen, update mirroring info if it exists
if (mLayer->isRemovedFromCurrentState()) {
mLayer->traverse(LayerVector::StateSet::Drawing,
[&](Layer* layer) { layer->updateMirrorInfo(); });
mLayer->traverse(LayerVector::StateSet::Drawing,
[&](Layer* layer) { layer->updateCloneBufferInfo(); });
}
if (!mChildrenOnly) {
mTransform = mLayer->getTransform().inverse();
// If the layer is offscreen, compute bounds since we don't compute bounds for offscreen
// layers in a regular cycles.
if (mLayer->isRemovedFromCurrentState()) {
FloatRect maxBounds = mFlinger.getMaxDisplayBounds();
mLayer->computeBounds(maxBounds, ui::Transform(), 0.f /* shadowRadius */);
}
drawLayers();
} else {
// In the "childrenOnly" case we reparent the children to a screenshot
// layer which has no properties set and which does not draw.
// We hold the statelock as the reparent-for-drawing operation modifies the
// hierarchy and there could be readers on Binder threads, like dump.
sp<ContainerLayer> screenshotParentLayer = mFlinger.getFactory().createContainerLayer(
{&mFlinger, nullptr, "Screenshot Parent"s, 0, LayerMetadata()});
{
Mutex::Autolock _l(mFlinger.mStateLock);
reparentForDrawing(mLayer, screenshotParentLayer, sourceCrop);
}
drawLayers();
{
Mutex::Autolock _l(mFlinger.mStateLock);
mLayer->setChildrenDrawingParent(mLayer);
}
}
}
} // namespace android
|
