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