/*************************************************************************** *   Copyright (C) 2006-2007 by Rajko Albrecht                             * *   ral@alwins-world.de                                                   * *                                                                         * *   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.         * ***************************************************************************/#include "pannerview.h"#include <qpainter.h>PannerView::PannerView(QWidget* parent, const char* name)    : QCanvasView(parent, name,WNoAutoErase | WStaticContents ){    m_Moving = false;    viewport()->setBackgroundMode(Qt::NoBackground);    setBackgroundMode(Qt::NoBackground);}PannerView::~PannerView(){}void PannerView::drawContents(QPainter* p,  int clipx, int clipy, int clipw, int cliph){    p->save();    QCanvasView::drawContents(p,clipx,clipy,clipw,cliph);    p->restore();    if (m_ZoomRect.isValid()) {        p->setPen(red.dark());        p->drawRect(m_ZoomRect);        p->setPen( red);        p->drawRect(QRect(m_ZoomRect.x()+1, m_ZoomRect.y()+1,            m_ZoomRect.width()-2, m_ZoomRect.height()-2));    }}void PannerView::setZoomRect(const QRect& theValue){    QRect oldRect = m_ZoomRect;    m_ZoomRect = theValue;    updateContents(oldRect);    updateContents(m_ZoomRect);}/*!    \fn PannerView::contentsMouseMoveEvent(QMouseEvent* e) */void PannerView::contentsMouseMoveEvent(QMouseEvent* e){    if (m_Moving) {        emit zoomRectMoved(e->pos().x() - m_LastPos.x(), e->pos().y() - m_LastPos.y());        m_LastPos = e->pos();    }}/*!    \fn PannerView::contentsMousePressEvent(QMouseEvent* e) */void PannerView::contentsMousePressEvent(QMouseEvent* e){    if (m_ZoomRect.isValid()) {        if (!m_ZoomRect.contains(e->pos())) {            emit zoomRectMoved(e->pos().x() - m_ZoomRect.center().x(),                e->pos().y() - m_ZoomRect.center().y());        }        m_Moving = true;        m_LastPos = e->pos();    }}/*!    \fn PannerView::contentsMouseReleaseEvent(QMouseEvent*) */void PannerView::contentsMouseReleaseEvent(QMouseEvent*){    m_Moving = false;    emit zoomRectMoveFinished();}/*!    \fn PannerView::updateCurrentRect() */void PannerView::updateCurrentRect(){    if (m_ZoomRect.isValid()) updateContents(m_ZoomRect);}#include "pannerview.moc"