00001 /* 00002 * Copyright (c) 2012, Willow Garage, Inc. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions are met: 00007 * 00008 * * Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * * Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * * Neither the name of the Willow Garage, Inc. nor the names of its 00014 * contributors may be used to endorse or promote products derived from 00015 * this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00018 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00021 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00022 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00023 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00024 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00025 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00026 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00027 * POSSIBILITY OF SUCH DAMAGE. 00028 */ 00029 00030 #include <QWidget> 00031 #include <QPainter> 00032 00033 #include "scaled_image_widget.h" 00034 00035 namespace rviz 00036 { 00037 00038 ScaledImageWidget::ScaledImageWidget( float scale, QWidget* parent ) 00039 : QWidget( parent ) 00040 , scale_( scale ) 00041 { 00042 } 00043 00044 void ScaledImageWidget::setImage( QPixmap image ) 00045 { 00046 image_ = image; 00047 update(); 00048 } 00049 00050 QSize ScaledImageWidget::sizeHint() const 00051 { 00052 return image_.size() * scale_; 00053 } 00054 00055 void ScaledImageWidget::paintEvent( QPaintEvent* event ) 00056 { 00057 if( !image_.isNull() ) 00058 { 00059 QSize dest_size = image_.size(); 00060 dest_size.scale( width(), height(), Qt::KeepAspectRatio ); 00061 QRect dest_rect( width() / 2 - dest_size.width() / 2, 00062 height() / 2 - dest_size.height() / 2, 00063 dest_size.width(), 00064 dest_size.height() ); 00065 00066 QPainter painter( this ); 00067 painter.drawPixmap( dest_rect, image_ ); 00068 } 00069 } 00070 00071 } // end namespace rviz