From 1b15dd24e9c28cdc5ee5a16d7ce646d4618107b9 Mon Sep 17 00:00:00 2001 From: Peter Penz Date: Sat, 24 Jul 2010 22:23:16 +0000 Subject: Sourcecode hierarchy cleanup: Move class PixmapViewer from "src" to "src/panels/information" svn path=/trunk/KDE/kdebase/apps/; revision=1154154 --- src/panels/information/pixmapviewer.h | 98 +++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 src/panels/information/pixmapviewer.h (limited to 'src/panels/information/pixmapviewer.h') diff --git a/src/panels/information/pixmapviewer.h b/src/panels/information/pixmapviewer.h new file mode 100644 index 000000000..c15750bb7 --- /dev/null +++ b/src/panels/information/pixmapviewer.h @@ -0,0 +1,98 @@ +/*************************************************************************** + * Copyright (C) 2006 by Peter Penz * + * * + * 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 * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * 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., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * + ***************************************************************************/ + +#ifndef PIXMAPVIEWER_H +#define PIXMAPVIEWER_H + +#include +#include +#include +#include + +class QPaintEvent; + +/** + * @brief Widget which shows a pixmap centered inside the boundaries. + * + * When the pixmap is changed, a smooth transition is done from the old pixmap + * to the new pixmap. + */ +class PixmapViewer : public QWidget +{ + Q_OBJECT + +public: + enum Transition + { + /** No transition is done when the pixmap is changed. */ + NoTransition, + + /** + * The old pixmap is replaced by the new pixmap and the size is + * adjusted smoothly to the size of the new pixmap. + */ + DefaultTransition, + + /** + * If the old pixmap and the new pixmap have the same content, but + * a different size it is recommended to use Transition::SizeTransition + * instead of Transition::DefaultTransition. In this case it is assured + * that the larger pixmap is used for downscaling, which leads + * to an improved scaling output. + */ + SizeTransition + }; + + explicit PixmapViewer(QWidget* parent, + Transition transition = DefaultTransition); + + virtual ~PixmapViewer(); + void setPixmap(const QPixmap& pixmap); + QPixmap pixmap() const; + + /** + * Sets the size hint to \a size and triggers a relayout + * of the parent widget. Per default no size hint is given. + */ + void setSizeHint(const QSize& size); + virtual QSize sizeHint() const; + +protected: + virtual void paintEvent(QPaintEvent* event); + +private Q_SLOTS: + void checkPendingPixmaps(); + +private: + QPixmap m_pixmap; + QPixmap m_oldPixmap; + QQueue m_pendingPixmaps; + QTimeLine m_animation; + Transition m_transition; + int m_animationStep; + QSize m_sizeHint; +}; + +inline QPixmap PixmapViewer::pixmap() const +{ + return m_pixmap; +} + + +#endif -- cgit v1.3.1