src/Dialog_SplashScreen.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2014 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version, but always including the *additional*
   9 // restrictions defined in the "License.txt" file.
  10 //
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License along
  17 // with this program; if not, write to the Free Software Foundation, Inc.,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 // http://www.gnu.org/licenses/gpl-2.0.txt
  21 ///////////////////////////////////////////////////////////////////////////////
  22
  23 #include "Dialog_SplashScreen.h"
  24
  25 //UIC includes
  26 #include "UIC_SplashScreen.h"
  27
  28 //Internal
  29 #include "Global.h"
  30
  31 //MUtils
  32 #include <MUtils/Global.h>
  33 #include <MUtils/GUI.h>
  34 #include <MUtils/Taskbar7.h>
  35
  36 //Qt
  37 #include <QThread>
  38 #include <QMovie>
  39 #include <QKeyEvent>
  40 #include <QTimer>
  41
  42 #define FADE_DELAY 16
  43 #define OPACITY_DELTA 0.04
  44
  45 //Setup taskbar indicator
  46 #define SET_TASKBAR_STATE(WIDGET,FLAG) do \
  47 { \
  48         if((WIDGET)->m_taskBarFlag != (FLAG)) \
  49         { \
  50                 if((WIDGET)->m_taskbar->setTaskbarState((FLAG) ? MUtils::Taskbar7::TASKBAR_STATE_INTERMEDIATE : MUtils::Taskbar7::TASKBAR_STATE_NONE)) \
  51                 { \
  52                         (WIDGET)->m_taskBarFlag = (FLAG); \
  53                 } \
  54         } \
  55 } \
  56 while(0)
  57
  58 ////////////////////////////////////////////////////////////
  59 // Constructor
  60 ////////////////////////////////////////////////////////////
  61
  62 SplashScreen::SplashScreen(QWidget *parent)
  63 :
  64         QFrame(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint),
  65         ui(new Ui::SplashScreen),
  66         m_opacitySteps(qRound(1.0 / OPACITY_DELTA)),
  67         m_taskbar(new MUtils::Taskbar7(this))
  68 {
  69         //Init the dialog, from the .ui file
  70         ui->setupUi(this);
  71
  72         //Make size fixed
  73         setFixedSize(this->size());
  74
  75         //Create event loop
  76         m_loop.reset(new QEventLoop(this));
  77
  78         //Create timer
  79         m_timer.reset(new QTimer(this));
  80         m_timer->setInterval(FADE_DELAY);
  81         m_timer->setSingleShot(false);
  82
  83         //Connect timer to slot
  84         connect(m_timer.data(), SIGNAL(timeout()), this, SLOT(updateHandler()));
  85
  86         //Enable "sheet of glass" effect on splash screen
  87         if(!MUtils::GUI::sheet_of_glass(this))
  88         {
  89                 setStyleSheet("background-image: url(:/images/Background.jpg)");
  90         }
  91
  92         //Start animation
  93         m_working.reset(new QMovie(":/images/Loading4.gif"));
  94         m_working->setCacheMode(QMovie::CacheAll);
  95         ui->labelLoading->setMovie(m_working.data());
  96         m_working->start();
  97
  98         //Init status
  99         m_canClose = false;
 100         m_status = STATUS_FADE_IN;
 101         m_fadeValue = 0;
 102         m_taskBarFlag = false;
 103 }
 104
 105 ////////////////////////////////////////////////////////////
 106 // Destructor
 107 ////////////////////////////////////////////////////////////
 108
 109 SplashScreen::~SplashScreen(void)
 110 {
 111         if(m_working)
 112         {
 113                 m_working->stop();
 114         }
 115
 116         delete ui;
 117 }
 118
 119 ////////////////////////////////////////////////////////////
 120 // PUBLIC FUNCTIONS
 121 ////////////////////////////////////////////////////////////
 122
 123 void SplashScreen::showSplash(QThread *thread)
 124 {
 125         QScopedPointer<SplashScreen> splashScreen(new SplashScreen());
 126
 127         //Show splash
 128         splashScreen->setWindowOpacity(OPACITY_DELTA);
 129         splashScreen->show();
 130
 131         //Set wait cursor
 132         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 133
 134         //Wait for window to show
 135         QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 136         splashScreen->repaint(); MUtils::GUI::bring_to_front(splashScreen.data());
 137         QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 138
 139         //Connect thread signals
 140         connect(thread, SIGNAL(terminated()), splashScreen.data(), SLOT(threadComplete()), Qt::QueuedConnection);
 141         connect(thread, SIGNAL(finished()),   splashScreen.data(), SLOT(threadComplete()), Qt::QueuedConnection);
 142
 143         //Init taskbar
 144         SET_TASKBAR_STATE(splashScreen, true);
 145
 146         //Start the thread
 147         splashScreen->m_timer->start(FADE_DELAY);
 148         QTimer::singleShot(8*60*1000, splashScreen->m_loop.data(), SLOT(quit()));
 149         QTimer::singleShot(333, thread, SLOT(start()));
 150
 151         //Start event handling!
 152         const int ret = splashScreen->m_loop->exec(QEventLoop::ExcludeUserInputEvents);
 153
 154         //Check for timeout
 155         if(ret != 42)
 156         {
 157                 thread->terminate();
 158                 qFatal("Deadlock in initialization thread encountered!");
 159         }
 160
 161         //Restore taskbar
 162         SET_TASKBAR_STATE(splashScreen, false);
 163
 164         //Restore cursor
 165         QApplication::restoreOverrideCursor();
 166
 167         //Hide splash
 168         splashScreen->m_canClose = true;
 169         splashScreen->close();
 170 }
 171
 172 ////////////////////////////////////////////////////////////
 173 // SLOTS
 174 ////////////////////////////////////////////////////////////
 175
 176 void SplashScreen::updateHandler(void)
 177 {
 178         if(m_status == STATUS_FADE_IN)
 179         {
 180                 if(m_fadeValue < m_opacitySteps)
 181                 {
 182                         setWindowOpacity(OPACITY_DELTA * static_cast<double>(++m_fadeValue));
 183                         SET_TASKBAR_STATE(this, true);
 184                 }
 185                 else
 186                 {
 187                         setWindowOpacity(1.0);
 188                         MUtils::GUI::bring_to_front(this);
 189                         m_timer->stop();
 190                         m_status = STATUS_WAIT;
 191                 }
 192         }
 193         else if(m_status == STATUS_FADE_OUT)
 194         {
 195                 if(m_fadeValue > 0)
 196                 {
 197                         setWindowOpacity(OPACITY_DELTA * static_cast<double>(--m_fadeValue));
 198                         SET_TASKBAR_STATE(this, true);
 199                 }
 200                 else
 201                 {
 202                         setWindowOpacity(0.0);
 203                         m_timer->stop();
 204                         m_status = STATUS_DONE;
 205                         m_loop->exit(42);
 206                 }
 207         }
 208 }
 209
 210 void SplashScreen::threadComplete(void)
 211 {
 212         m_status = STATUS_FADE_OUT;
 213         if(!m_timer->isActive())
 214         {
 215                 m_timer->start(FADE_DELAY);
 216         }
 217         MUtils::GUI::bring_to_front(this);
 218 }
 219
 220 ////////////////////////////////////////////////////////////
 221 // EVENTS
 222 ////////////////////////////////////////////////////////////
 223
 224 void SplashScreen::keyPressEvent(QKeyEvent *event)
 225 {
 226         event->ignore();
 227 }
 228
 229 void SplashScreen::keyReleaseEvent(QKeyEvent *event)
 230 {
 231         event->ignore();
 232 }
 233
 234 void SplashScreen::closeEvent(QCloseEvent *event)
 235 {
 236         if(!m_canClose) event->ignore();
 237 }