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 EPS (1.0E-5)
  34 #define FADE_DELAY 4
  35
  36 ////////////////////////////////////////////////////////////
  37 // Constructor
  38 ////////////////////////////////////////////////////////////
  39
  40 SplashScreen::SplashScreen(QWidget *parent)
  41         : QFrame(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint)
  42 {
  43         //Init the dialog, from the .ui file
  44         setupUi(this);
  45
  46         //Start animation
  47         m_working = new QMovie(":/images/Loading.gif");
  48         labelLoading->setMovie(m_working);
  49         m_working->start();
  50
  51         //Set wait cursor
  52         setCursor(Qt::WaitCursor);
  53
  54         //Prevent close
  55         m_canClose = false;
  56 }
  57
  58 ////////////////////////////////////////////////////////////
  59 // Destructor
  60 ////////////////////////////////////////////////////////////
  61
  62 SplashScreen::~SplashScreen(void)
  63 {
  64         if(m_working)
  65         {
  66                 m_working->stop();
  67                 delete m_working;
  68                 m_working = NULL;
  69         }
  70 }
  71
  72 ////////////////////////////////////////////////////////////
  73 // PUBLIC FUNCTIONS
  74 ////////////////////////////////////////////////////////////
  75
  76 void SplashScreen::showSplash(QThread *thread)
  77 {
  78         double opacity = 0.0;
  79         SplashScreen *splashScreen = new SplashScreen();
  80
  81         //Show splash
  82         splashScreen->m_canClose = false;
  83         splashScreen->setWindowOpacity(opacity);
  84         splashScreen->show();
  85
  86         //Wait for window to show
  87         QApplication::processEvents();
  88         Sleep(100);
  89         QApplication::processEvents();
  90
  91         //Setup the event loop
  92         QEventLoop *loop = new QEventLoop(splashScreen);
  93         connect(thread, SIGNAL(terminated()), loop, SLOT(quit()), Qt::QueuedConnection);
  94         connect(thread, SIGNAL(finished()), loop, SLOT(quit()), Qt::QueuedConnection);
  95
  96         //Start thread
  97         QApplication::processEvents();
  98         thread->start();
  99         QApplication::processEvents();
 100
 101         //Init taskbar
 102         WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
 103
 104         //Fade in
 105         for(int i = 0; i <= 100; i++)
 106         {
 107                 opacity = 0.01 * static_cast<double>(i);
 108                 splashScreen->setWindowOpacity(opacity);
 109                 QApplication::processEvents();
 110                 Sleep(FADE_DELAY);
 111         }
 112
 113         //Loop while thread is running
 114         while(thread->isRunning())
 115         {
 116                 QTimer::singleShot(15000, loop, SLOT(quit()));
 117                 loop->exec();
 118                 if(thread->isRunning()) qWarning("Potential deadlock in Init thread!");
 119         }
 120
 121         //Fade out
 122         for(int i = 100; i >= 0; i--)
 123         {
 124                 opacity = 0.01 * static_cast<double>(i);
 125                 splashScreen->setWindowOpacity(opacity);
 126                 QApplication::processEvents();
 127                 Sleep(FADE_DELAY);
 128         }
 129
 130         //Restore taskbar
 131         WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarNoState);
 132
 133         //Hide splash
 134         splashScreen->m_canClose = true;
 135         splashScreen->close();
 136
 137         //Free
 138         LAMEXP_DELETE(loop);
 139         LAMEXP_DELETE(splashScreen);
 140 }
 141
 142 ////////////////////////////////////////////////////////////
 143 // EVENTS
 144 ////////////////////////////////////////////////////////////
 145
 146 void SplashScreen::keyPressEvent(QKeyEvent *event)
 147 {
 148         event->ignore();
 149 }
 150
 151 void SplashScreen::keyReleaseEvent(QKeyEvent *event)
 152 {
 153         event->ignore();
 154 }
 155
 156 void SplashScreen::closeEvent(QCloseEvent *event)
 157 {
 158         if(!m_canClose) event->ignore();
 159 }
 160
 161 bool SplashScreen::winEvent(MSG *message, long *result)
 162 {
 163         return WinSevenTaskbar::handleWinEvent(message, result);
 164 }