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113 lines
3 KiB
C++
113 lines
3 KiB
C++
/*
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* KFontInst - KDE Font Installer
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*
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* Copyright 2003-2007 Craig Drummond <craig@kde.org>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ActionLabel.h"
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#include <KDE/KIconLoader>
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#include <QtGui/QLabel>
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#include <QtCore/QTimer>
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#include <QtGui/QPixmap>
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#include <QtGui/QMatrix>
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namespace KFI
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{
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// Borrowed from kolourpaint...
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static QMatrix matrixWithZeroOrigin(const QMatrix &matrix, int width, int height)
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{
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QRect newRect(matrix.mapRect(QRect(0, 0, width, height)));
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return QMatrix(matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(),
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matrix.dx() - newRect.left(), matrix.dy() - newRect.top());
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}
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static QMatrix rotateMatrix(int width, int height, double angle)
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{
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QMatrix matrix;
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matrix.translate(width/2, height/2);
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matrix.rotate(angle);
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return matrixWithZeroOrigin(matrix, width, height);
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}
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static const int constNumIcons=8;
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static int theUsageCount;
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static QPixmap *theIcons[constNumIcons];
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CActionLabel::CActionLabel(QWidget *parent)
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: QLabel(parent)
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{
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static const int constIconSize(48);
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setMinimumSize(constIconSize, constIconSize);
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setMaximumSize(constIconSize, constIconSize);
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setAlignment(Qt::AlignCenter);
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if(0==theUsageCount++)
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{
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QImage img(KIconLoader::global()->loadIcon("application-x-font-ttf", KIconLoader::NoGroup, 32).toImage());
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double increment=360.0/constNumIcons;
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for(int i=0; i<constNumIcons; ++i)
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theIcons[i]=new QPixmap(QPixmap::fromImage(0==i ? img : img.transformed(rotateMatrix(img.width(), img.height(), increment*i))));
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}
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setPixmap(*theIcons[0]);
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itsTimer=new QTimer(this);
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connect(itsTimer, SIGNAL(timeout()), SLOT(rotateIcon()));
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}
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CActionLabel::~CActionLabel()
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{
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if(0==--theUsageCount)
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for(int i=0; i<constNumIcons; ++i)
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{
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delete theIcons[i];
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theIcons[i]=NULL;
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}
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}
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void CActionLabel::startAnimation()
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{
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itsCount=0;
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setPixmap(*theIcons[0]);
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itsTimer->start(1000/constNumIcons);
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}
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void CActionLabel::stopAnimation()
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{
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itsTimer->stop();
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itsCount=0;
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setPixmap(*theIcons[itsCount]);
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}
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void CActionLabel::rotateIcon()
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{
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if(++itsCount==constNumIcons)
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itsCount=0;
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setPixmap(*theIcons[itsCount]);
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}
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}
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#include "moc_ActionLabel.cpp"
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