src/Dialog_WorkingBanner.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_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
  55 ////////////////////////////////////////////////////////////
  56 // Destructor
  57 ////////////////////////////////////////////////////////////
  58
  59 WorkingBanner::~WorkingBanner(void)
  60 {
  61         if(m_working)
  62         {
  63                 m_working->stop();
  64                 delete m_working;
  65                 m_working = NULL;
  66         }
  67 }
  68
  69 ////////////////////////////////////////////////////////////
  70 // PUBLIC FUNCTIONS
  71 ////////////////////////////////////////////////////////////
  72
  73 void WorkingBanner::show(const QString &text)
  74 {
  75         m_canClose = false;
  76         QDialog::show();
  77         setText(text);
  78         QApplication::processEvents();
  79 }
  80
  81 bool WorkingBanner::close(void)
  82 {
  83         m_canClose = true;
  84         emit userAbort();
  85         return QDialog::close();
  86 }
  87
  88 void WorkingBanner::show(const QString &text, QThread *thread)
  89 {
  90         //Show splash
  91         this->show(text);
  92
  93         //Start the thread
  94         thread->start();
  95
  96         //Set taskbar state
  97         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), &QIcon(":/icons/hourglass.png"));
  98         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
  99
 100         //Loop while thread is running
 101         while(thread->isRunning())
 102         {
 103                 QApplication::processEvents(QEventLoop::AllEvents | QEventLoop::WaitForMoreEvents);
 104         }
 105
 106         //Set taskbar state
 107         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarNoState);
 108         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), NULL);
 109
 110         //Hide splash
 111         this->close();
 112 }
 113
 114 void WorkingBanner::show(const QString &text, QEventLoop *loop)
 115 {
 116         //Show splash
 117         this->show(text);
 118
 119         //Set taskbar state
 120         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), &QIcon(":/icons/hourglass.png"));
 121         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarIndeterminateState);
 122
 123         //Loop while thread is running
 124         loop->exec(QEventLoop::ExcludeUserInputEvents);
 125
 126         //Set taskbar state
 127         WinSevenTaskbar::setTaskbarState(dynamic_cast<QWidget*>(this->parent()), WinSevenTaskbar::WinSevenTaskbarNoState);
 128         WinSevenTaskbar::setOverlayIcon(dynamic_cast<QWidget*>(this->parent()), NULL);
 129
 130         //Hide splash
 131         this->close();
 132 }
 133
 134 ////////////////////////////////////////////////////////////
 135 // EVENTS
 136 ////////////////////////////////////////////////////////////
 137
 138 void WorkingBanner::keyPressEvent(QKeyEvent *event)
 139 {
 140         if(event->key() == Qt::Key_Escape)
 141         {
 142                 qDebug("QT::KEY_ESCAPE pressed!");
 143                 emit userAbort();
 144         }
 145
 146         event->ignore();
 147 }
 148
 149 void WorkingBanner::keyReleaseEvent(QKeyEvent *event)
 150 {
 151         event->ignore();
 152 }
 153
 154 void WorkingBanner::closeEvent(QCloseEvent *event)
 155 {
 156         if(!m_canClose) event->ignore();
 157 }
 158
 159 bool WorkingBanner::winEvent(MSG *message, long *result)
 160 {
 161         return WinSevenTaskbar::handleWinEvent(message, result);
 162 }
 163
 164 ////////////////////////////////////////////////////////////
 165 // SLOTS
 166 ////////////////////////////////////////////////////////////
 167
 168 void WorkingBanner::setText(const QString &text)
 169 {
 170         QFontMetrics metrics(labelStatus->font());
 171         if(metrics.width(text) <= labelStatus->width())
 172         {
 173                 labelStatus->setText(text);
 174         }
 175         else
 176         {
 177                 QString choppedText = text.simplified().append("...");
 178                 while(metrics.width(choppedText) > labelStatus->width() && choppedText.length() > 8)
 179                 {
 180                         choppedText.chop(4);
 181                         choppedText = choppedText.trimmed();
 182                         choppedText.append("...");
 183                 }
 184                 labelStatus->setText(choppedText);
 185         }
 186         if(this->isVisible())
 187         {
 188                 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
 189         }
 190 }