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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QXmlStreamReader>
#include "fluidlauncher.h"
#define DEFAULT_INPUT_TIMEOUT 10000
#define SIZING_FACTOR_HEIGHT 6/10
#define SIZING_FACTOR_WIDTH 6/10
FluidLauncher::FluidLauncher(QStringList* args)
{
pictureFlowWidget = new PictureFlow();
slideShowWidget = new SlideShow();
inputTimer = new QTimer();
addWidget(pictureFlowWidget);
addWidget(slideShowWidget);
setCurrentWidget(pictureFlowWidget);
pictureFlowWidget->setFocus();
QRect screen_size = QApplication::desktop()->screenGeometry();
QObject::connect(pictureFlowWidget, SIGNAL(itemActivated(int)), this, SLOT(launchApplication(int)));
QObject::connect(pictureFlowWidget, SIGNAL(inputReceived()), this, SLOT(resetInputTimeout()));
QObject::connect(slideShowWidget, SIGNAL(inputReceived()), this, SLOT(switchToLauncher()));
QObject::connect(inputTimer, SIGNAL(timeout()), this, SLOT(inputTimedout()));
inputTimer->setSingleShot(true);
inputTimer->setInterval(DEFAULT_INPUT_TIMEOUT);
const int h = screen_size.height() * SIZING_FACTOR_HEIGHT;
const int w = screen_size.width() * SIZING_FACTOR_WIDTH;
const int hh = qMin(h, w);
const int ww = hh / 3 * 2;
pictureFlowWidget->setSlideSize(QSize(ww, hh));
bool success;
int configIndex = args->indexOf("-config");
if ( (configIndex != -1) && (configIndex != args->count()-1) )
success = loadConfig(args->at(configIndex+1));
else
success = loadConfig("config.xml");
if (success) {
populatePictureFlow();
showFullScreen();
inputTimer->start();
} else {
pictureFlowWidget->setAttribute(Qt::WA_DeleteOnClose, true);
pictureFlowWidget->close();
}
}
FluidLauncher::~FluidLauncher()
{
delete pictureFlowWidget;
delete slideShowWidget;
}
bool FluidLauncher::loadConfig(QString configPath)
{
QFile xmlFile(configPath);
if (!xmlFile.exists() || (xmlFile.error() != QFile::NoError)) {
qDebug() << "ERROR: Unable to open config file " << configPath;
return false;
}
slideShowWidget->clearImages();
xmlFile.open(QIODevice::ReadOnly);
QXmlStreamReader reader(&xmlFile);
while (!reader.atEnd()) {
reader.readNext();
if (reader.isStartElement()) {
if (reader.name() == "demos")
parseDemos(reader);
else if(reader.name() == "slideshow")
parseSlideshow(reader);
}
}
if (reader.hasError()) {
qDebug() << QString("Error parsing %1 on line %2 column %3: \n%4")
.arg(configPath)
.arg(reader.lineNumber())
.arg(reader.columnNumber())
.arg(reader.errorString());
}
// Append an exit Item
DemoApplication* exitItem = new DemoApplication(QString(), QLatin1String("Exit Embedded Demo"), QString(), QStringList());
demoList.append(exitItem);
return true;
}
void FluidLauncher::parseDemos(QXmlStreamReader& reader)
{
while (!reader.atEnd()) {
reader.readNext();
if (reader.isStartElement() && reader.name() == "example") {
QXmlStreamAttributes attrs = reader.attributes();
QStringRef filename = attrs.value("filename");
if (!filename.isEmpty()) {
QStringRef name = attrs.value("name");
QStringRef image = attrs.value("image");
QStringRef args = attrs.value("args");
DemoApplication* newDemo = new DemoApplication(
filename.toString(),
name.isEmpty() ? "Unnamed Demo" : name.toString(),
image.toString(),
args.toString().split(" "));
demoList.append(newDemo);
}
} else if(reader.isEndElement() && reader.name() == "demos") {
return;
}
}
}
void FluidLauncher::parseSlideshow(QXmlStreamReader& reader)
{
QXmlStreamAttributes attrs = reader.attributes();
QStringRef timeout = attrs.value("timeout");
bool valid;
if (!timeout.isEmpty()) {
int t = timeout.toString().toInt(&valid);
if (valid)
inputTimer->setInterval(t);
}
QStringRef interval = attrs.value("interval");
if (!interval.isEmpty()) {
int i = interval.toString().toInt(&valid);
if (valid)
slideShowWidget->setSlideInterval(i);
}
while (!reader.atEnd()) {
reader.readNext();
if (reader.isStartElement()) {
QXmlStreamAttributes attrs = reader.attributes();
if (reader.name() == "imagedir") {
QStringRef dir = attrs.value("dir");
slideShowWidget->addImageDir(dir.toString());
} else if(reader.name() == "image") {
QStringRef image = attrs.value("image");
slideShowWidget->addImage(image.toString());
}
} else if(reader.isEndElement() && reader.name() == "slideshow") {
return;
}
}
}
void FluidLauncher::populatePictureFlow()
{
pictureFlowWidget->setSlideCount(demoList.count());
for (int i=demoList.count()-1; i>=0; --i) {
pictureFlowWidget->setSlide(i, *(demoList[i]->getImage()));
pictureFlowWidget->setSlideCaption(i, demoList[i]->getCaption());
}
pictureFlowWidget->setCurrentSlide(demoList.count()/2);
}
void FluidLauncher::launchApplication(int index)
{
// NOTE: Clearing the caches will free up more memory for the demo but will cause
// a delay upon returning, as items are reloaded.
//pictureFlowWidget->clearCaches();
if (index == demoList.size() -1) {
qApp->quit();
return;
}
inputTimer->stop();
QObject::connect(demoList[index], SIGNAL(demoFinished()), this, SLOT(demoFinished()));
demoList[index]->launch();
}
void FluidLauncher::switchToLauncher()
{
slideShowWidget->stopShow();
inputTimer->start();
setCurrentWidget(pictureFlowWidget);
}
void FluidLauncher::resetInputTimeout()
{
if (inputTimer->isActive())
inputTimer->start();
}
void FluidLauncher::inputTimedout()
{
switchToSlideshow();
}
void FluidLauncher::switchToSlideshow()
{
inputTimer->stop();
slideShowWidget->startShow();
setCurrentWidget(slideShowWidget);
}
void FluidLauncher::demoFinished()
{
setCurrentWidget(pictureFlowWidget);
inputTimer->start();
// Bring the Fluidlauncher to the foreground to allow selecting another demo
raise();
activateWindow();
}
void FluidLauncher::changeEvent(QEvent* event)
{
if (event->type() == QEvent::ActivationChange) {
if (isActiveWindow()) {
if(currentWidget() == pictureFlowWidget) {
resetInputTimeout();
} else {
slideShowWidget->startShow();
}
} else {
inputTimer->stop();
slideShowWidget->stopShow();
}
}
QStackedWidget::changeEvent(event);
}
|