src/graywidget.cpp

   1 /* This file is part of the KDE project
   2    Copyright (C) 2005-2007 Tom Albers <tomalbers@kde.nl>
   3    Copyright (C) 2006 Bram Schoenmakers <bramschoenmakers@kde.nl>
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public
   7    License as published by the Free Software Foundation; either
   8    version 2 of the License, or (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 GNU
  13    General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 */
  19
  20 #include "graywidget.h"
  21 #include "grayouteffect.h"
  22 #include "rsitimer_dpms.h"
  23 #include "boxdialog.h"
  24
  25 #include <QApplication>
  26 #include <QDesktopWidget>
  27 #include <QX11Info>
  28 #include <QPainter>
  29 #include <QTimer>
  30
  31 #include <KWindowSystem>
  32 #include <KDebug>
  33
  34 GrayWidget::GrayWidget( QWidget *parent )
  35         : QWidget( parent, Qt::Popup ), m_currentY( 0 ), m_first( true )
  36 {
  37     // full screen
  38     setAttribute( Qt::WA_NoSystemBackground );
  39     setAttribute( Qt::WA_PaintOnScreen );
  40     QRect rect = QApplication::desktop()->screenGeometry(
  41                      QApplication::desktop()->primaryScreen() );
  42     setGeometry( rect );
  43
  44     m_gray = 0;
  45
  46     m_dialog = new BoxDialog( this, Qt::Popup );
  47 }
  48
  49 GrayWidget::~GrayWidget() {}
  50
  51 void GrayWidget::reset()
  52 {
  53     hide();
  54     m_currentY = 0;
  55     m_first = true;
  56     m_dialog->reject();
  57     delete m_gray;
  58     m_gray = 0;
  59 }
  60
  61 void GrayWidget::slotGrayEffect()
  62 {
  63     m_complete = takeScreenshot( QX11Info::appScreen() );
  64
  65     repaint(); //before show
  66
  67     show();
  68
  69     KWindowSystem::forceActiveWindow( winId() );
  70     KWindowSystem::setOnAllDesktops( winId(), true );
  71     KWindowSystem::setState( winId(), NET::KeepAbove );
  72     KWindowSystem::setState( winId(), NET::FullScreen );
  73
  74     m_gray = new GrayOutEffect( this, &m_complete );
  75     connect( m_gray, SIGNAL( ready() ), m_dialog, SLOT( showDialog() ) );
  76     m_gray->start();
  77 }
  78
  79 void GrayWidget::paintEvent( QPaintEvent* )
  80 {
  81     QPainter painter( this );
  82     painter.setCompositionMode( QPainter::CompositionMode_Source );
  83     painter.drawPixmap( 0, 0, m_complete );
  84 }
  85
  86 #include "graywidget.moc"