src/Dialog_SplashScreen.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2011 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
  30 #include "WinSevenTaskbar.h"
  31
  32 #define EPS (1.0E-5)
  33
  34 ////////////////////////////////////////////////////////////
  35 // Constructor
  36 ////////////////////////////////////////////////////////////
  37
  38 SplashScreen::SplashScreen(QWidget *parent)
  39         : QFrame(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint)
  40 {
  41         //Init the dialog, from the .ui file
  42         setupUi(this);
  43
  44         //Start animation
  45         m_working = new QMovie(":/images/Loading.gif");
  46         labelLoading->setMovie(m_working);
  47         m_working->start();
  48
  49         //Set wait cursor
  50         setCursor(Qt::WaitCursor);
  51
  52         //Prevent close
  53         m_canClose = false;
  54 }
  55
  56 ////////////////////////////////////////////////////////////
  57 // Destructor
  58 ////////////////////////////////////////////////////////////
  59
  60 SplashScreen::~SplashScreen(void)
  61 {
  62         if(m_working)
  63         {
  64                 m_working->stop();
  65                 delete m_working;
  66                 m_working = NULL;
  67         }
  68 }
  69
  70 ////////////////////////////////////////////////////////////
  71 // PUBLIC FUNCTIONS
  72 ////////////////////////////////////////////////////////////
  73
  74 void SplashScreen::showSplash(QThread *thread)
  75 {
  76         SplashScreen *splashScreen = new SplashScreen();
  77
  78         //Show splash
  79         splashScreen->m_canClose = false;
  80         splashScreen->setWindowOpacity(0.0);
  81         splashScreen->show();
  82         QApplication::processEvents();
  83
  84         //Setup event loop
  85         QEventLoop *loop = new QEventLoop(splashScreen);
  86         connect(thread, SIGNAL(terminated()), loop, SLOT(quit()), Qt::QueuedConnection);
  87         connect(thread, SIGNAL(finished()), loop, SLOT(quit()), Qt::QueuedConnection);
  88
  89         //Start the thread
  90         thread->start();
  91         bool flag = false;
  92
  93         //Fade in
  94         for(double d = 0.0; d <= 1.0 + EPS; d = d + 0.01)
  95         {
  96                 splashScreen->setWindowOpacity(d);
  97                 QApplication::processEvents();
  98                 if(!flag) flag = WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
  99                 Sleep(6);
 100         }
 101
 102         //Loop while thread is running
 103         loop->exec();
 104
 105         //Fade out
 106         for(double d = 1.0; d >= 0.0; d = d - 0.01)
 107         {
 108                 splashScreen->setWindowOpacity(d);
 109                 QApplication::processEvents();
 110                 Sleep(6);
 111         }
 112
 113         //Restore taskbar
 114         WinSevenTaskbar::setTaskbarState(splashScreen, WinSevenTaskbar::WinSevenTaskbarNoState);
 115
 116         //Hide splash
 117         splashScreen->m_canClose = true;
 118         splashScreen->close();
 119
 120         LAMEXP_DELETE(loop);
 121         LAMEXP_DELETE(splashScreen);
 122 }
 123
 124 ////////////////////////////////////////////////////////////
 125 // EVENTS
 126 ////////////////////////////////////////////////////////////
 127
 128 void SplashScreen::keyPressEvent(QKeyEvent *event)
 129 {
 130         event->ignore();
 131 }
 132
 133 void SplashScreen::keyReleaseEvent(QKeyEvent *event)
 134 {
 135         event->ignore();
 136 }
 137
 138 void SplashScreen::closeEvent(QCloseEvent *event)
 139 {
 140         if(!m_canClose) event->ignore();
 141 }
 142
 143 bool SplashScreen::winEvent(MSG *message, long *result)
 144 {
 145         return WinSevenTaskbar::handleWinEvent(message, result);
 146 }