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#include "oimagezoomer.h"
#include <qimage.h>
#include <qpixmap.h>
#include <qpainter.h>
#include <qrect.h>
#include <qpoint.h>
#include <qsize.h>
namespace Opie {
namespace MM {
OImageZoomer::OImageZoomer( QWidget* parent, const char* name, WFlags fl )
: QFrame( parent, name, fl ) {
init();
}
OImageZoomer::OImageZoomer( const QPixmap& pix, QWidget* par, const char* name, WFlags fl )
: QFrame( par, name, fl ) {
init();
setImage( pix );
}
OImageZoomer::OImageZoomer( const QSize& pSize, const QSize& vSize, QWidget* par,
const char* name, WFlags fl )
: QFrame( par, name, fl ), m_imgSize( pSize ),m_visSize( vSize ) {
init();
}
OImageZoomer::~OImageZoomer() {
}
void OImageZoomer::init() {
setFrameStyle( Panel | Sunken );
}
void OImageZoomer::setImageSize( const QSize& size ) {
m_imgSize = size;
repaint();
}
void OImageZoomer::setViewPortSize( const QSize& size ) {
m_visSize = size;
repaint();
}
void OImageZoomer::setVisiblePoint( const QPoint& pt ) {
m_visPt = pt;
repaint();
}
void OImageZoomer::setImage( const QImage& img) {
m_img = img;
resizeEvent( 0 );
repaint();
}
void OImageZoomer::setImage( const QPixmap& pix) {
setImage( pix.convertToImage() );
}
void OImageZoomer::resizeEvent( QResizeEvent* ev ) {
QFrame::resizeEvent( ev );
setBackgroundOrigin( QWidget::WidgetOrigin );
// TODO Qt3 use PalettePixmap and use size
QPixmap pix; pix.convertFromImage( m_img.smoothScale( size().width(), size().height() ) );
setBackgroundPixmap( pix);
}
void OImageZoomer::drawContents( QPainter* p ) {
/*
* if the page size
*/
if ( m_imgSize.isEmpty() )
return;
/*
* paint a red rect which represents the visible size
*
* We need to recalculate x,y and width and height of the
* rect. So image size relates to contentRect
*
*/
QRect c( contentsRect() );
p->setPen( Qt::red );
int len = m_imgSize.width();
int x = (c.width()*m_visPt.x())/len + c.x();
int w = (c.width()*m_visSize.width() )/len + c.x();
if ( w > c.width() ) w = c.width();
len = m_imgSize.height();
int y = (c.height()*m_visPt.y() )/len + c.y();
int h = (c.height()*m_visSize.height() )/len + c.y();
if ( h > c.height() ) h = c.height();
p->drawRect( x, y, w, h );
}
void OImageZoomer::mousePressEvent( QMouseEvent* ) {
m_mouseX = m_mouseY = -1;
}
void OImageZoomer::mouseMoveEvent( QMouseEvent* ev ) {
int mx, my;
mx = ev->x();
my = ev->y();
if ( m_mouseX != -1 && m_mouseY != -1 ) {
int diffx = ( mx - m_mouseX ) * m_imgSize.width() / width();
int diffy = ( my - m_mouseY ) * m_imgSize.height() / height();
emit zoomAreaRel( diffx, diffy );
emit zoomArea(m_visPt.x()+diffx, m_visPt.y()+diffy );
}
m_mouseX = mx;
m_mouseY = my;
}
}
}
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