workspace/kcontrol/kfontinst/kcmfontinst/ActionDialog.cpp

   1 /*
   2  * KFontInst - KDE Font Installer
   3  *
   4  * Copyright 2003-2007 Craig Drummond <craig@kde.org>
   5  *
   6  * ----
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; see the file COPYING.  If not, write to
  20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  * Boston, MA 02110-1301, USA.
  22  */
  23
  24 #include "ActionDialog.h"
  25 #include <KDE/KIconLoader>
  26 #include <QtGui/QLabel>
  27 #include <QtCore/QTimer>
  28 #include <QtGui/QPixmap>
  29 #include <QtGui/QMatrix>
  30
  31 namespace KFI
  32 {
  33
  34 // Borrowed from kolourpaint...
  35 static QMatrix matrixWithZeroOrigin(const QMatrix &matrix, int width, int height)
  36 {
  37     QRect newRect(matrix.mapRect(QRect(0, 0, width, height)));
  38
  39     return QMatrix(matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(),
  40                    matrix.dx() - newRect.left(), matrix.dy() - newRect.top());
  41 }
  42
  43 static QMatrix rotateMatrix(int width, int height, double angle)
  44 {
  45     QMatrix matrix;
  46     matrix.translate(width/2, height/2);
  47     matrix.rotate(angle);
  48
  49     return matrixWithZeroOrigin(matrix, width, height);
  50 }
  51
  52 static const int constNumIcons=8;
  53 static int       theUsageCount;
  54 static QPixmap   *theIcons[constNumIcons];
  55
  56 CActionDialog::CActionDialog(QWidget *parent)
  57              : KDialog(parent)
  58 {
  59     static const int constIconSize(48);
  60
  61     setModal(true);
  62     itsPixmapLabel=new QLabel(this);
  63     itsPixmapLabel->setMinimumSize(constIconSize, constIconSize);
  64     itsPixmapLabel->setMaximumSize(constIconSize, constIconSize);
  65     itsPixmapLabel->setAlignment(Qt::AlignCenter);
  66
  67     if(0==theUsageCount++)
  68     {
  69         QImage img(KIconLoader::global()->loadIcon("application-x-font-ttf", KIconLoader::NoGroup, 32).toImage());
  70         double increment=360.0/constNumIcons;
  71
  72         for(int i=0; i<constNumIcons; ++i)
  73             theIcons[i]=new QPixmap(QPixmap::fromImage(0==i ? img : img.transformed(rotateMatrix(img.width(), img.height(), increment*i))));
  74     }
  75
  76     itsPixmapLabel->setPixmap(*theIcons[0]);
  77     itsTimer=new QTimer(this);
  78     connect(itsTimer, SIGNAL(timeout()), SLOT(rotateIcon()));
  79 }
  80
  81 CActionDialog::~CActionDialog()
  82 {
  83     if(0==--theUsageCount)
  84         for(int i=0; i<constNumIcons; ++i)
  85         {
  86             delete theIcons[i];
  87             theIcons[i]=NULL;
  88         }
  89 }
  90
  91 int CActionDialog::exec()
  92 {
  93     startAnimation();
  94     return KDialog::exec();
  95 }
  96
  97 void CActionDialog::startAnimation()
  98 {
  99     itsCount=0;
 100     itsPixmapLabel->setPixmap(*theIcons[0]);
 101     itsTimer->start(1000/constNumIcons);
 102 }
 103
 104 void CActionDialog::stopAnimation()
 105 {
 106     itsTimer->stop();
 107     itsCount=0;
 108     itsPixmapLabel->setPixmap(*theIcons[itsCount]);
 109 }
 110
 111 void CActionDialog::rotateIcon()
 112 {
 113     if(++itsCount==constNumIcons)
 114         itsCount=0;
 115
 116     itsPixmapLabel->setPixmap(*theIcons[itsCount]);
 117 }
 118
 119 }
 120
 121 #include "ActionDialog.moc"