src/Dialog_SplashScreen.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2012 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.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Dialog_SplashScreen.h"
  23
  24 #include "Global.h"
  25
  26 #include <QThread>
  27 #include <QMovie>
  28 #include <QKeyEvent>
  29 #include <QTimer>
  30
  31 #include "WinSevenTaskbar.h"
  32
  33 #define FADE_DELAY 4
  34 #define THREAD_RUNNING(THRD) (((THRD)->isRunning()) ?  (!((THRD)->wait(16))) : false)
  35
  36 ////////////////////////////////////////////////////////////
  37 // Constructor
  38 ////////////////////////////////////////////////////////////
  39
  40 SplashScreen::SplashScreen(QWidget *parent)
  41 :
  42         QFrame(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint)
  43 {
  44         //Init the dialog, from the .ui file
  45         setupUi(this);
  46
  47         //Start animation
  48         m_working = new QMovie(":/images/Loading.gif");
  49         labelLoading->setMovie(m_working);
  50         m_working->start();
  51
  52         //Set wait cursor
  53         setCursor(Qt::WaitCursor);
  54
  55         //Prevent close
  56         m_canClose = false;
  57 }
  58
  59 ////////////////////////////////////////////////////////////
  60 // Destructor
  61 ////////////////////////////////////////////////////////////
  62
  63 SplashScreen::~SplashScreen(void)
  64 {
  65         if(m_working)
  66         {
  67                 m_working->stop();
  68                 delete m_working;
  69                 m_working = NULL;
  70         }
  71 }
  72
  73 ////////////////////////////////////////////////////////////
  74 // PUBLIC FUNCTIONS
  75 ////////////////////////////////////////////////////////////
  76
  77 void SplashScreen::showSplash(QThread *thread)
  78 {
  79         double opacity = 0.0;
  80         SplashScreen *splashScreen = new SplashScreen();
  81
  82         //Show splash
  83         splashScreen->m_canClose = false;
  84         splashScreen->setWindowOpacity(opacity);
  85         splashScreen->show();
  86
  87         //Wait for window to show
  88         QApplication::processEvents();
  89         Sleep(100);
  90         QApplication::processEvents();
  91
  92         //Setup the event loop
  93         QEventLoop *loop = new QEventLoop(splashScreen);
  94         connect(thread, SIGNAL(terminated()), loop, SLOT(quit()), Qt::QueuedConnection);
  95         connect(thread, SIGNAL(finished()), loop, SLOT(quit()), Qt::QueuedConnection);
  96
  97         //Create timer
  98         QTimer *timer = new QTimer();
  99         connect(timer, SIGNAL(timeout()), loop, SLOT(quit()));
 100
 101         //Start thread
 102         QApplication::processEvents();
 103         thread->start();
 104         QApplication::processEvents();
 105
 106         //Init taskbar
 107         WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
 108
 109         //Fade in
 110         for(int i = 0; i <= 100; i++)
 111         {
 112                 opacity = 0.01 * static_cast<double>(i);
 113                 splashScreen->setWindowOpacity(opacity);
 114                 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents, FADE_DELAY);
 115                 Sleep(FADE_DELAY);
 116         }
 117
 118         //Start the timer
 119         timer->start(30720);
 120
 121         //Loop while thread is still running
 122         if(bool bIsRunning = THREAD_RUNNING(thread))
 123         {
 124                 while(bIsRunning)
 125                 {
 126                         loop->exec();
 127                         if(bIsRunning = THREAD_RUNNING(thread))
 128                         {
 129                                 qWarning("Potential deadlock in initialization thread!");
 130                         }
 131                 }
 132         }
 133
 134         //Stop the timer
 135         timer->stop();
 136
 137         //Fade out
 138         for(int i = 100; i >= 0; i--)
 139         {
 140                 opacity = 0.01 * static_cast<double>(i);
 141                 splashScreen->setWindowOpacity(opacity);
 142                 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents, FADE_DELAY);
 143                 Sleep(FADE_DELAY);
 144         }
 145
 146         //Restore taskbar
 147         WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarNoState);
 148
 149         //Hide splash
 150         splashScreen->m_canClose = true;
 151         splashScreen->close();
 152
 153         //Free
 154         LAMEXP_DELETE(loop);
 155         LAMEXP_DELETE(timer);
 156         LAMEXP_DELETE(splashScreen);
 157 }
 158
 159 ////////////////////////////////////////////////////////////
 160 // EVENTS
 161 ////////////////////////////////////////////////////////////
 162
 163 void SplashScreen::keyPressEvent(QKeyEvent *event)
 164 {
 165         event->ignore();
 166 }
 167
 168 void SplashScreen::keyReleaseEvent(QKeyEvent *event)
 169 {
 170         event->ignore();
 171 }
 172
 173 void SplashScreen::closeEvent(QCloseEvent *event)
 174 {
 175         if(!m_canClose) event->ignore();
 176 }
 177
 178 bool SplashScreen::winEvent(MSG *message, long *result)
 179 {
 180         return WinSevenTaskbar::handleWinEvent(message, result);
 181 }