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/***************************************************************************
* *
* This file is part of the Fotowall project, *
* http://www.enricoros.com/opensource/fotowall *
* *
* Copyright (C) 2009 by TANGUY Arnaud <arn.tanguy@gmail.com> *
* *
* 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. *
* *
***************************************************************************/
#include "CroppingWidget.h"
#include <QRubberBand>
#include <QMouseEvent>
#include <QPainter>
CroppingWidget::CroppingWidget(QWidget *parent) : QWidget(parent), m_previewRatio(1)
{
m_rubberBand = new QRubberBand(QRubberBand::Rectangle, this);
m_rubberBand->setGeometry(0,0,0,0);
}
void CroppingWidget::setPixmap(QPixmap *pix)
{
m_previewPixmap = pix->scaled(500, 500, Qt::KeepAspectRatio, Qt::SmoothTransformation);
m_previewRatio = (float)pix->width()/(float)m_previewPixmap.width();
setFixedSize(m_previewPixmap.size());
}
void CroppingWidget::mousePressEvent(QMouseEvent *event)
{
m_rubberBand->show();
m_origin = event->pos();
m_rubberBand->setGeometry(QRect(m_origin, QSize()));
}
void CroppingWidget::mouseMoveEvent(QMouseEvent *event)
{
m_rubberBand->setGeometry(QRect(m_origin, event->pos()).normalized());
}
void CroppingWidget::mouseReleaseEvent(QMouseEvent *)
{
// determine selection, for example using QRect::intersects()
// and QRect::contains().
}
void CroppingWidget::paintEvent(QPaintEvent *)
{
QPainter p(this);
p.drawPixmap(m_previewPixmap.rect(), m_previewPixmap);
}
QRect CroppingWidget::getCroppingRect() const
{
QRectF selectionRect = m_rubberBand->geometry();
return QRect(selectionRect.x()*m_previewRatio, selectionRect.y()*m_previewRatio,
selectionRect.width()*m_previewRatio, selectionRect.height()*m_previewRatio);
}
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