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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. AND ITS CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC.
* OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "web/PageOverlay.h"
#include "core/frame/Settings.h"
#include "core/page/Page.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/GraphicsLayer.h"
#include "platform/graphics/GraphicsLayerClient.h"
#include "public/platform/WebLayer.h"
#include "public/web/WebPageOverlay.h"
#include "public/web/WebViewClient.h"
#include "web/WebViewImpl.h"
namespace blink {
namespace {
WebCanvas* ToWebCanvas(GraphicsContext* gc)
{
return gc->canvas();
}
} // namespace
PassOwnPtr<PageOverlay> PageOverlay::create(WebViewImpl* viewImpl, WebPageOverlay* overlay)
{
return adoptPtr(new PageOverlay(viewImpl, overlay));
}
PageOverlay::PageOverlay(WebViewImpl* viewImpl, WebPageOverlay* overlay)
: m_viewImpl(viewImpl)
, m_overlay(overlay)
, m_zOrder(0)
{
}
class OverlayGraphicsLayerClientImpl : public GraphicsLayerClient {
public:
static PassOwnPtr<OverlayGraphicsLayerClientImpl> create(WebPageOverlay* overlay)
{
return adoptPtr(new OverlayGraphicsLayerClientImpl(overlay));
}
virtual ~OverlayGraphicsLayerClientImpl() { }
virtual void paintContents(const GraphicsLayer*, GraphicsContext& gc, GraphicsLayerPaintingPhase, const IntRect& inClip)
{
gc.save();
m_overlay->paintPageOverlay(ToWebCanvas(&gc));
gc.restore();
}
virtual String debugName(const GraphicsLayer* graphicsLayer) override
{
return String("WebViewImpl Page Overlay Content Layer");
}
private:
explicit OverlayGraphicsLayerClientImpl(WebPageOverlay* overlay)
: m_overlay(overlay)
{
}
WebPageOverlay* m_overlay;
};
void PageOverlay::clear()
{
invalidateWebFrame();
if (m_layer) {
m_layer->removeFromParent();
if (Page* page = m_viewImpl->page())
page->inspectorController().didRemovePageOverlay(m_layer.get());
m_layer = nullptr;
m_layerClient = nullptr;
}
}
void PageOverlay::update()
{
invalidateWebFrame();
if (!m_layer) {
m_layerClient = OverlayGraphicsLayerClientImpl::create(m_overlay);
m_layer = GraphicsLayer::create(m_viewImpl->graphicsLayerFactory(), m_layerClient.get());
m_layer->setDrawsContent(true);
if (Page* page = m_viewImpl->page())
page->inspectorController().willAddPageOverlay(m_layer.get());
// This is required for contents of overlay to stay in sync with the page while scrolling.
WebLayer* platformLayer = m_layer->platformLayer();
platformLayer->setShouldScrollOnMainThread(true);
}
FloatSize size(m_viewImpl->size());
if (size != m_layer->size()) {
// Triggers re-adding to root layer to ensure that we are on top of
// scrollbars.
m_layer->removeFromParent();
m_layer->setSize(size);
}
m_viewImpl->setOverlayLayer(m_layer.get());
m_layer->setNeedsDisplay();
}
void PageOverlay::paintWebFrame(GraphicsContext& gc)
{
if (!m_viewImpl->isAcceleratedCompositingActive()) {
gc.save();
m_overlay->paintPageOverlay(ToWebCanvas(&gc));
gc.restore();
}
}
void PageOverlay::invalidateWebFrame()
{
// WebPageOverlay does the actual painting of the overlay.
// Here we just make sure to invalidate.
if (!m_viewImpl->isAcceleratedCompositingActive()) {
// FIXME: able to invalidate a smaller rect.
// FIXME: Is it important to just invalidate a smaller rect given that
// this is not on a critical codepath? In order to do so, we'd
// have to take scrolling into account.
const WebSize& size = m_viewImpl->size();
WebRect damagedRect(0, 0, size.width, size.height);
if (m_viewImpl->client())
m_viewImpl->client()->didInvalidateRect(damagedRect);
}
}
} // namespace blink
|
