[556] | 1 | /****************************************************************************
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| 2 | **
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[846] | 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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[556] | 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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| 6 | **
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| 7 | ** This file is part of the demonstration applications of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at qt-info@nokia.com.
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include <QXmlStreamReader>
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| 43 |
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| 44 | #include "fluidlauncher.h"
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| 45 |
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| 46 |
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| 47 | #define DEFAULT_INPUT_TIMEOUT 10000
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| 48 | #define SIZING_FACTOR_HEIGHT 6/10
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| 49 | #define SIZING_FACTOR_WIDTH 6/10
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| 50 |
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| 51 | FluidLauncher::FluidLauncher(QStringList* args)
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| 52 | {
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| 53 | pictureFlowWidget = new PictureFlow();
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| 54 | slideShowWidget = new SlideShow();
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| 55 | inputTimer = new QTimer();
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| 56 |
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| 57 | addWidget(pictureFlowWidget);
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| 58 | addWidget(slideShowWidget);
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| 59 | setCurrentWidget(pictureFlowWidget);
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| 60 | pictureFlowWidget->setFocus();
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| 61 |
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| 62 | QRect screen_size = QApplication::desktop()->screenGeometry();
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| 63 |
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| 64 | QObject::connect(pictureFlowWidget, SIGNAL(itemActivated(int)), this, SLOT(launchApplication(int)));
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| 65 | QObject::connect(pictureFlowWidget, SIGNAL(inputReceived()), this, SLOT(resetInputTimeout()));
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| 66 | QObject::connect(slideShowWidget, SIGNAL(inputReceived()), this, SLOT(switchToLauncher()));
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| 67 | QObject::connect(inputTimer, SIGNAL(timeout()), this, SLOT(inputTimedout()));
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| 68 |
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| 69 | inputTimer->setSingleShot(true);
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| 70 | inputTimer->setInterval(DEFAULT_INPUT_TIMEOUT);
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| 71 |
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| 72 | const int h = screen_size.height() * SIZING_FACTOR_HEIGHT;
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| 73 | const int w = screen_size.width() * SIZING_FACTOR_WIDTH;
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| 74 | const int hh = qMin(h, w);
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| 75 | const int ww = hh / 3 * 2;
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| 76 | pictureFlowWidget->setSlideSize(QSize(ww, hh));
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| 77 |
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| 78 | bool success;
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| 79 | int configIndex = args->indexOf("-config");
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| 80 | if ( (configIndex != -1) && (configIndex != args->count()-1) )
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| 81 | success = loadConfig(args->at(configIndex+1));
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| 82 | else
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| 83 | success = loadConfig("config.xml");
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| 84 |
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| 85 | if (success) {
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| 86 | populatePictureFlow();
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| 87 |
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| 88 | showFullScreen();
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| 89 | inputTimer->start();
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| 90 | } else {
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| 91 | pictureFlowWidget->setAttribute(Qt::WA_DeleteOnClose, true);
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| 92 | pictureFlowWidget->close();
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| 93 | }
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| 94 |
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| 95 | }
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| 96 |
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| 97 | FluidLauncher::~FluidLauncher()
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| 98 | {
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| 99 | delete pictureFlowWidget;
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| 100 | delete slideShowWidget;
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| 101 | }
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| 102 |
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| 103 | bool FluidLauncher::loadConfig(QString configPath)
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| 104 | {
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| 105 | QFile xmlFile(configPath);
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| 106 |
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| 107 | if (!xmlFile.exists() || (xmlFile.error() != QFile::NoError)) {
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| 108 | qDebug() << "ERROR: Unable to open config file " << configPath;
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| 109 | return false;
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| 110 | }
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| 111 |
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| 112 | slideShowWidget->clearImages();
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| 113 |
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| 114 | xmlFile.open(QIODevice::ReadOnly);
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| 115 | QXmlStreamReader reader(&xmlFile);
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| 116 | while (!reader.atEnd()) {
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| 117 | reader.readNext();
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| 118 |
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| 119 | if (reader.isStartElement()) {
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| 120 | if (reader.name() == "demos")
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| 121 | parseDemos(reader);
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| 122 | else if(reader.name() == "slideshow")
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| 123 | parseSlideshow(reader);
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| 124 | }
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| 125 | }
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| 126 |
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| 127 | if (reader.hasError()) {
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| 128 | qDebug() << QString("Error parsing %1 on line %2 column %3: \n%4")
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| 129 | .arg(configPath)
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| 130 | .arg(reader.lineNumber())
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| 131 | .arg(reader.columnNumber())
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| 132 | .arg(reader.errorString());
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| 133 | }
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| 134 |
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| 135 | // Append an exit Item
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| 136 | DemoApplication* exitItem = new DemoApplication(QString(), QLatin1String("Exit Embedded Demo"), QString(), QStringList());
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| 137 | demoList.append(exitItem);
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| 138 |
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| 139 | return true;
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| 140 | }
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| 141 |
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| 142 |
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| 143 | void FluidLauncher::parseDemos(QXmlStreamReader& reader)
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| 144 | {
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| 145 | while (!reader.atEnd()) {
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| 146 | reader.readNext();
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| 147 | if (reader.isStartElement() && reader.name() == "example") {
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| 148 | QXmlStreamAttributes attrs = reader.attributes();
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| 149 | QStringRef filename = attrs.value("filename");
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| 150 | if (!filename.isEmpty()) {
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| 151 | QStringRef name = attrs.value("name");
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| 152 | QStringRef image = attrs.value("image");
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| 153 | QStringRef args = attrs.value("args");
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| 154 |
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| 155 | DemoApplication* newDemo = new DemoApplication(
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| 156 | filename.toString(),
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[846] | 157 | name.isEmpty() ? "Unnamed Demo" : name.toString(),
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[556] | 158 | image.toString(),
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| 159 | args.toString().split(" "));
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| 160 | demoList.append(newDemo);
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| 161 | }
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| 162 | } else if(reader.isEndElement() && reader.name() == "demos") {
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| 163 | return;
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| 164 | }
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| 165 | }
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| 166 | }
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| 167 |
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| 168 | void FluidLauncher::parseSlideshow(QXmlStreamReader& reader)
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| 169 | {
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| 170 | QXmlStreamAttributes attrs = reader.attributes();
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| 171 |
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| 172 | QStringRef timeout = attrs.value("timeout");
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| 173 | bool valid;
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| 174 | if (!timeout.isEmpty()) {
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| 175 | int t = timeout.toString().toInt(&valid);
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| 176 | if (valid)
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| 177 | inputTimer->setInterval(t);
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| 178 | }
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| 179 |
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| 180 | QStringRef interval = attrs.value("interval");
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| 181 | if (!interval.isEmpty()) {
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| 182 | int i = interval.toString().toInt(&valid);
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| 183 | if (valid)
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| 184 | slideShowWidget->setSlideInterval(i);
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| 185 | }
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| 186 |
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| 187 | while (!reader.atEnd()) {
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| 188 | reader.readNext();
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| 189 | if (reader.isStartElement()) {
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| 190 | QXmlStreamAttributes attrs = reader.attributes();
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| 191 | if (reader.name() == "imagedir") {
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| 192 | QStringRef dir = attrs.value("dir");
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| 193 | slideShowWidget->addImageDir(dir.toString());
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| 194 | } else if(reader.name() == "image") {
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| 195 | QStringRef image = attrs.value("image");
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| 196 | slideShowWidget->addImage(image.toString());
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| 197 | }
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| 198 | } else if(reader.isEndElement() && reader.name() == "slideshow") {
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| 199 | return;
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| 200 | }
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| 201 | }
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| 202 |
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| 203 | }
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| 204 |
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| 205 | void FluidLauncher::populatePictureFlow()
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| 206 | {
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| 207 | pictureFlowWidget->setSlideCount(demoList.count());
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| 208 |
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| 209 | for (int i=demoList.count()-1; i>=0; --i) {
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| 210 | pictureFlowWidget->setSlide(i, *(demoList[i]->getImage()));
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| 211 | pictureFlowWidget->setSlideCaption(i, demoList[i]->getCaption());
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| 212 | }
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| 213 |
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| 214 | pictureFlowWidget->setCurrentSlide(demoList.count()/2);
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| 215 | }
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| 216 |
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| 217 |
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| 218 | void FluidLauncher::launchApplication(int index)
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| 219 | {
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| 220 | // NOTE: Clearing the caches will free up more memory for the demo but will cause
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| 221 | // a delay upon returning, as items are reloaded.
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| 222 | //pictureFlowWidget->clearCaches();
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| 223 |
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| 224 | if (index == demoList.size() -1) {
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| 225 | qApp->quit();
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| 226 | return;
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| 227 | }
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| 228 |
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| 229 | inputTimer->stop();
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| 230 |
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| 231 | QObject::connect(demoList[index], SIGNAL(demoFinished()), this, SLOT(demoFinished()));
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| 232 |
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| 233 | demoList[index]->launch();
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| 234 | }
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| 235 |
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| 236 |
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| 237 | void FluidLauncher::switchToLauncher()
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| 238 | {
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| 239 | slideShowWidget->stopShow();
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| 240 | inputTimer->start();
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| 241 | setCurrentWidget(pictureFlowWidget);
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| 242 | }
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| 243 |
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| 244 |
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| 245 | void FluidLauncher::resetInputTimeout()
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| 246 | {
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| 247 | if (inputTimer->isActive())
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| 248 | inputTimer->start();
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| 249 | }
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| 250 |
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| 251 | void FluidLauncher::inputTimedout()
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| 252 | {
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| 253 | switchToSlideshow();
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| 254 | }
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| 255 |
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| 256 |
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| 257 | void FluidLauncher::switchToSlideshow()
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| 258 | {
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| 259 | inputTimer->stop();
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| 260 | slideShowWidget->startShow();
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| 261 | setCurrentWidget(slideShowWidget);
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| 262 | }
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| 263 |
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| 264 | void FluidLauncher::demoFinished()
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| 265 | {
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| 266 | setCurrentWidget(pictureFlowWidget);
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| 267 | inputTimer->start();
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| 268 |
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| 269 | // Bring the Fluidlauncher to the foreground to allow selecting another demo
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| 270 | raise();
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| 271 | activateWindow();
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| 272 | }
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| 273 |
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| 274 | void FluidLauncher::changeEvent(QEvent* event)
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| 275 | {
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| 276 | if (event->type() == QEvent::ActivationChange) {
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| 277 | if (isActiveWindow()) {
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| 278 | if(currentWidget() == pictureFlowWidget) {
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| 279 | resetInputTimeout();
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| 280 | } else {
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| 281 | slideShowWidget->startShow();
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| 282 | }
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| 283 | } else {
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| 284 | inputTimer->stop();
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| 285 | slideShowWidget->stopShow();
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| 286 | }
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| 287 | }
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| 288 | QStackedWidget::changeEvent(event);
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| 289 | }
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