X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/5252c12db4929886dbe502013e0a1fee6500f568..862ceee323ad3b474ce9de11eefbddd99c528fac:/src/pixmapviewer.cpp

diff --git a/src/pixmapviewer.cpp b/src/pixmapviewer.cpp
index 575f3eda1..79e2487a7 100644
--- a/src/pixmapviewer.cpp
+++ b/src/pixmapviewer.cpp
@@ -1,6 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2006 by Peter Penz                                      *
- *   peter.penz@gmx.at                                                     *
+ *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
@@ -15,23 +14,26 @@
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the                         *
  *   Free Software Foundation, Inc.,                                       *
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  ***************************************************************************/
 
 #include "pixmapviewer.h"
 
-#include <kglobalsettings.h>
 #include <kiconloader.h>
-#include <qpainter.h>
-//Added by qt3to4:
-#include <QPixmap>
-#include <QPaintEvent>
+#include <QtGui/QPainter>
+#include <QtGui/QPixmap>
+#include <QtGui/QKeyEvent>
 
-PixmapViewer::PixmapViewer(QWidget* parent) :
-    QWidget(parent)
+PixmapViewer::PixmapViewer(QWidget* parent, Transition transition) :
+    QWidget(parent),
+    m_transition(transition),
+    m_animationStep(0)
 {
-    setMinimumWidth(KIcon::SizeEnormous);
-    setMinimumWidth(KIcon::SizeEnormous);
+    setMinimumWidth(K3Icon::SizeEnormous);
+    setMinimumWidth(K3Icon::SizeEnormous);
+
+    m_animation.setDuration(300);
+    connect(&m_animation, SIGNAL(valueChanged(qreal)), this, SLOT(update()));
 }
 
 PixmapViewer::~PixmapViewer()
@@ -40,20 +42,42 @@ PixmapViewer::~PixmapViewer()
 
 void PixmapViewer::setPixmap(const QPixmap& pixmap)
 {
+    if (pixmap.isNull()) {
+        return;
+    }
+
+    m_oldPixmap = m_pixmap.isNull() ? pixmap : m_pixmap;
     m_pixmap = pixmap;
     update();
+
+    const bool animate = (m_transition != NoTransition) &&
+                         (m_pixmap.size() != m_oldPixmap.size());
+    if (animate) {
+        m_animation.start();
+    }
 }
 
 void PixmapViewer::paintEvent(QPaintEvent* event)
 {
     QWidget::paintEvent(event);
 
-    QPainter painter;
-    painter.begin(this);
-    const int x = (width() - m_pixmap.width()) / 2;
-    const int y = (height() - m_pixmap.height()) / 2;
-    painter.drawPixmap(x, y, m_pixmap);
-    painter.end();
+    QPainter painter(this);
+
+    const float value = m_animation.currentValue();
+
+    const int scaledWidth  = static_cast<int>((m_oldPixmap.width()  * (1.0 - value)) + (m_pixmap.width()  * value));
+    const int scaledHeight = static_cast<int>((m_oldPixmap.height() * (1.0 - value)) + (m_pixmap.height() * value));
+    const int x = (width()  - scaledWidth ) / 2;
+    const int y = (height() - scaledHeight) / 2;
+
+    const bool useOldPixmap = (m_transition == SizeTransition) &&
+                              (m_oldPixmap.width() > m_pixmap.width());
+    const QPixmap& largePixmap = useOldPixmap ? m_oldPixmap : m_pixmap;
+    const QPixmap scaledPixmap = largePixmap.scaled(scaledWidth,
+                                                    scaledHeight,
+                                                    Qt::IgnoreAspectRatio,
+                                                    Qt::SmoothTransformation);
+    painter.drawPixmap(x, y, scaledPixmap);
 }
 
 #include "pixmapviewer.moc"