src/Dialog_WorkingBanner.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_WorkingBanner.h"
  23
  24 #include "Global.h"
  25 #include "WinSevenTaskbar.h"
  26
  27 #include <QThread>
  28 #include <QMovie>
  29 #include <QKeyEvent>
  30 #include <QFontMetrics>
  31
  32 #define EPS (1.0E-5)
  33
  34 ////////////////////////////////////////////////////////////
  35 // Constructor
  36 ////////////////////////////////////////////////////////////
  37
  38 WorkingBanner::WorkingBanner(QWidget *parent)
  39 :
  40         QDialog(parent, Qt::CustomizeWindowHint | Qt::WindowStaysOnTopHint)
  41 {
  42         //Init the dialog, from the .ui file
  43         setupUi(this);
  44         setModal(true);
  45
  46         //Start animation
  47         m_working = new QMovie(":/images/Busy.gif");
  48         labelWorking->setMovie(m_working);
  49         m_working->start();
  50
  51         //Set wait cursor
  52         setCursor(Qt::WaitCursor);
  53
  54         //Init taskbar
  55         WinSevenTaskbar::initTaskbar();
  56 }
  57
  58 ////////////////////////////////////////////////////////////
  59 // Destructor
  60 ////////////////////////////////////////////////////////////
  61
  62 WorkingBanner::~WorkingBanner(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 WorkingBanner::show(const QString &text)
  77 {
  78         m_canClose = false;
  79         QDialog::show();
  80         setText(text);
  81         QApplication::processEvents();
  82 }
  83
  84 void WorkingBanner::close(void)
  85 {
  86         m_canClose = true;
  87         QDialog::close();
  88 }
  89
  90 void WorkingBanner::show(const QString &text, QThread *thread)
  91 {
  92         //Show splash
  93         this->show(text);
  94
  95         //Start the thread
  96         thread->start();
  97
  98         //Set taskbar state
  99         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), &QIcon(":/icons/hourglass.png"));
 100         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
 101
 102         //Loop while thread is running
 103         while(thread->isRunning())
 104         {
 105                 QApplication::processEvents(QEventLoop::AllEvents | QEventLoop::WaitForMoreEvents);
 106         }
 107
 108         //Set taskbar state
 109         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarNoState);
 110         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), NULL);
 111
 112         //Hide splash
 113         this->close();
 114 }
 115
 116 void WorkingBanner::show(const QString &text, QEventLoop *loop)
 117 {
 118         //Show splash
 119         this->show(text);
 120
 121         //Set taskbar state
 122         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), &QIcon(":/icons/hourglass.png"));
 123         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
 124
 125         //Loop while thread is running
 126         loop->exec(QEventLoop::ExcludeUserInputEvents);
 127
 128         //Set taskbar state
 129         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarNoState);
 130         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), NULL);
 131
 132         //Hide splash
 133         this->close();
 134 }
 135
 136 ////////////////////////////////////////////////////////////
 137 // EVENTS
 138 ////////////////////////////////////////////////////////////
 139
 140 void WorkingBanner::keyPressEvent(QKeyEvent *event)
 141 {
 142         if(event->key() == Qt::Key_Escape)
 143         {
 144                 qDebug("QT::KEY_ESCAPE pressed!");
 145                 emit userAbort();
 146         }
 147
 148         event->ignore();
 149 }
 150
 151 void WorkingBanner::keyReleaseEvent(QKeyEvent *event)
 152 {
 153         event->ignore();
 154 }
 155
 156 void WorkingBanner::closeEvent(QCloseEvent *event)
 157 {
 158         if(!m_canClose) event->ignore();
 159 }
 160
 161 ////////////////////////////////////////////////////////////
 162 // SLOTS
 163 ////////////////////////////////////////////////////////////
 164
 165 void WorkingBanner::setText(const QString &text)
 166 {
 167         QFontMetrics metrics(labelStatus->font());
 168         if(metrics.width(text) <= labelStatus->width())
 169         {
 170                 labelStatus->setText(text);
 171         }
 172         else
 173         {
 174                 QString choppedText = text.simplified().append("...");
 175                 while(metrics.width(choppedText) > labelStatus->width() && choppedText.length() > 8)
 176                 {
 177                         choppedText.chop(4);
 178                         choppedText = choppedText.trimmed();
 179                         choppedText.append("...");
 180                 }
 181                 labelStatus->setText(choppedText);
 182         }
 183         if(this->isVisible())
 184         {
 185                 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 186         }
 187 }