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