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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qscene2d.h"
#include "qscene2d_p.h"
#include "scene2d_p.h"
#include "scene2dmanager_p.h"
#include "scene2devent_p.h"
QT_BEGIN_NAMESPACE
using namespace Qt3DCore;
namespace Qt3DRender {
namespace Quick {
class RenderControl : public QQuickRenderControl
{
public:
RenderControl(QWindow *w) : m_window(w) { }
QWindow *renderWindow(QPoint *offset) override;
private:
QWindow *m_window;
};
QWindow *RenderControl::renderWindow(QPoint *offset)
{
if (offset)
*offset = QPoint(0, 0);
return m_window;
}
/*!
\internal
Constructs qml render manager.
*/
Scene2DManager::Scene2DManager(QScene2DPrivate *priv)
: m_rootItem(nullptr)
, m_item(nullptr)
, m_priv(priv)
, m_sharedObject(new Scene2DSharedObject(this))
, m_renderPolicy(QScene2D::Continuous)
, m_requested(false)
, m_initialized(false)
, m_renderSyncRequested(false)
, m_backendInitialized(false)
, m_mouseEnabled(true)
{
m_sharedObject->m_surface = new QOffscreenSurface;
m_sharedObject->m_surface->setFormat(QSurfaceFormat::defaultFormat());
m_sharedObject->m_surface->create();
// Create render control
m_sharedObject->m_renderControl = new RenderControl(nullptr);
// Create window to render the QML with
m_sharedObject->m_quickWindow = new QQuickWindow(m_sharedObject->m_renderControl);
// TODOQT6 see qtdeclarative 0d43e21429ee23442ec3a99f641a5665d66e75e2
//m_sharedObject->m_quickWindow->setClearBeforeRendering(true);
m_sharedObject->m_quickWindow->setColor(Qt::transparent);
connect(m_sharedObject->m_renderControl, &QQuickRenderControl::renderRequested,
this, &Scene2DManager::requestRender);
connect(m_sharedObject->m_renderControl, &QQuickRenderControl::sceneChanged,
this, &Scene2DManager::requestRenderSync);
}
Scene2DManager::~Scene2DManager()
{
m_sharedObject = nullptr;
}
void Scene2DManager::requestRender()
{
// Don't request render until the backend is initialized.
if (m_sharedObject->canRender()) {
if (!m_requested) {
m_requested = true;
QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::Render));
}
}
}
void Scene2DManager::requestRenderSync()
{
// Don't request render until the backed is initialized.
if (m_sharedObject->canRender()) {
if (!m_requested) {
m_requested = true;
QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::RenderSync));
}
} else {
m_renderSyncRequested = true;
}
}
void Scene2DManager::startIfInitialized()
{
if (!m_initialized && m_backendInitialized && m_item != nullptr) {
m_rootItem = m_item;
// Associate root item with the window.
m_rootItem->setParentItem(m_sharedObject->m_quickWindow->contentItem());
// Update window size.
updateSizes();
m_initialized = true;
m_sharedObject->setInitialized();
// Request render if we have already been requested and preparation has already been done
if (m_sharedObject->isPrepared() && m_renderSyncRequested) {
if (!m_requested) {
m_requested = true;
QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::RenderSync));
}
m_renderSyncRequested = false;
}
}
}
void Scene2DManager::stopAndClean()
{
if (m_sharedObject->isInitialized()) {
QMutexLocker lock(&m_sharedObject->m_mutex);
m_sharedObject->requestQuit();
m_sharedObject->wait();
m_sharedObject->cleanup();
}
}
void Scene2DManager::updateSizes()
{
const int width = m_rootItem->width();
const int height = m_rootItem->height();
if (width == 0 || height == 0) {
qWarning() << "QScene2D: Root item size not set.";
return;
}
m_sharedObject->m_quickWindow->setGeometry(0, 0, width, height);
}
void Scene2DManager::setItem(QQuickItem *item)
{
m_item = item;
startIfInitialized();
}
bool Scene2DManager::event(QEvent *e)
{
switch (static_cast<Scene2DEvent::Type>(e->type())) {
case Scene2DEvent::Render: {
// just render request, don't need to call sync in render thread
QMutexLocker lock(&m_sharedObject->m_mutex);
m_sharedObject->requestRender(false);
m_requested = false;
return true;
}
case Scene2DEvent::RenderSync: {
// sync and render request, main and render threads must be synchronized
if (!m_sharedObject->isQuit())
doRenderSync();
m_requested = false;
return true;
}
case Scene2DEvent::Prepare: {
m_sharedObject->m_renderControl->prepareThread(m_sharedObject->m_renderThread);
m_sharedObject->setPrepared();
if (m_renderSyncRequested) {
if (!m_requested) {
m_requested = true;
QCoreApplication::postEvent(this, new Scene2DEvent(Scene2DEvent::RenderSync));
}
m_renderSyncRequested = false;
}
return true;
}
case Scene2DEvent::Initialized: {
// backend is initialized, start the qml
m_backendInitialized = true;
startIfInitialized();
return true;
}
case Scene2DEvent::Rendered: {
// render is done, excellent, now clean anything not needed anymore.
stopAndClean();
return true;
}
default:
break;
}
return QObject::event(e);
}
void Scene2DManager::doRenderSync()
{
QMutexLocker lock(&m_sharedObject->m_mutex);
m_sharedObject->requestRender(true);
m_sharedObject->m_renderControl->polishItems();
// begin waiting render thread
m_sharedObject->wait();
m_requested = false;
}
void Scene2DManager::cleanup()
{
stopAndClean();
}
} // namespace Quick
} // namespace Qt3DRender
QT_END_NAMESPACE
#include "moc_scene2dmanager_p.cpp"
|
