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/***************************************************************************
* 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"
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