gwenview/lib/imagesequence.cpp

   1 // vim: set tabstop=4 shiftwidth=4 noexpandtab:
   2 /*
   3 Gwenview: an image viewer
   4 Copyright 2008 Aurélien Gâteau <aurelien.gateau@free.fr>
   5
   6 This program is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU General Public License
   8 as published by the Free Software Foundation; either version 2
   9 of the License, or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Cambridge, MA 02110-1301, USA.
  19
  20 */
  21 // Self
  22 #include "imagesequence.moc"
  23
  24 // Qt
  25 #include <QPainter>
  26 #include <QPixmap>
  27
  28 // KDE
  29 #include <kdebug.h>
  30
  31 // Local
  32
  33 namespace Gwenview {
  34
  35
  36 struct ImageSequencePrivate {
  37         QVector<QPixmap> mFrames;
  38 };
  39
  40
  41 ImageSequence::ImageSequence(QObject* parent)
  42 : QObject(parent)
  43 , d(new ImageSequencePrivate) {
  44 }
  45
  46
  47 ImageSequence::~ImageSequence() {
  48         delete d;
  49 }
  50
  51
  52 bool ImageSequence::load(const QString& path) {
  53         QPixmap bigPixmap;
  54         if (!bigPixmap.load(path)) {
  55                 kWarning() << "Could not load animation image from" << path;
  56                 return false;
  57         }
  58
  59         d->mFrames.resize(bigPixmap.height() / bigPixmap.width());
  60         const int size = bigPixmap.width();
  61
  62         for(int pos=0; pos < d->mFrames.size(); ++pos) {
  63                 QPixmap pix = QPixmap(size, size);
  64                 pix.fill(Qt::transparent);
  65                 QPainter painter(&pix);
  66                 painter.drawPixmap(QPoint(0, 0), bigPixmap, QRect(0, pos * size, size, size));
  67                 d->mFrames[pos] = pix;
  68         }
  69         return true;
  70 }
  71
  72
  73 QSize ImageSequence::frameSize() const {
  74         if (d->mFrames.size() == 0) {
  75                 kWarning() << "No frame loaded";
  76                 return QSize();
  77         }
  78         return d->mFrames[0].size();
  79 }
  80
  81
  82 int ImageSequence::frameCount() const {
  83         return d->mFrames.size();
  84 }
  85
  86
  87 QPixmap ImageSequence::frameAt(int index) const {
  88         if (index >= d->mFrames.size()) {
  89                 kWarning() << "index is too high" << index;
  90                 return QPixmap();
  91         }
  92         return d->mFrames.at(index);
  93 }
  94
  95
  96
  97 } // namespace