scaled_image_widget.cpp
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1 /*
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29 
30 #include <QWidget>
31 #include <QPainter>
32 
33 #include "scaled_image_widget.h"
34 
35 namespace rviz
36 {
37 
38 ScaledImageWidget::ScaledImageWidget( float scale, QWidget* parent )
39  : QWidget( parent )
40  , scale_( scale )
41 {
42 }
43 
44 void ScaledImageWidget::setImage( QPixmap image )
45 {
46  image_ = image;
47  update();
48 }
49 
51 {
52  return image_.size() * scale_;
53 }
54 
55 void ScaledImageWidget::paintEvent( QPaintEvent* event )
56 {
57  if( !image_.isNull() )
58  {
59  QSize dest_size = image_.size();
60  dest_size.scale( width(), height(), Qt::KeepAspectRatio );
61  QRect dest_rect( width() / 2 - dest_size.width() / 2,
62  height() / 2 - dest_size.height() / 2,
63  dest_size.width(),
64  dest_size.height() );
65 
66  QPainter painter( this );
67  painter.drawPixmap( dest_rect, image_ );
68  }
69 }
70 
71 } // end namespace rviz
virtual QSize sizeHint() const
void update(const std::string &key, const XmlRpc::XmlRpcValue &v)
void setImage(QPixmap image)
virtual void paintEvent(QPaintEvent *event)
ScaledImageWidget(float scale, QWidget *parent=0)


rviz
Author(s): Dave Hershberger, David Gossow, Josh Faust
autogenerated on Wed Aug 28 2019 04:01:51