File indexing completed on 2024-05-19 03:51:40 

0001 // SPDX-License-Identifier: LGPL-2.1-or-later
0002 //
0003 // SPDX-FileCopyrightText: 2012 Mohammed Nafees <nafees.technocool@gmail.com>
0004 // SPDX-FileCopyrightText: 2012 Dennis Nienhüser <nienhueser@kde.org>
0005 //
0006 
0007 #include "ScreenOverlayGraphicsItem.h"
0008 
0009 #include "ViewportParams.h"
0010 #include "GeoDataScreenOverlay.h"
0011 #include "GeoPainter.h"
0012 
0013 namespace Marble {
0014 
0015 ScreenOverlayGraphicsItem::ScreenOverlayGraphicsItem( const GeoDataScreenOverlay *screenOverlay ) :
0016     m_screenOverlay( screenOverlay )
0017 {
0018     /** @todo: take the possible size values into account according to kml spec */
0019     setSize( QSizeF( m_screenOverlay->size().x(), m_screenOverlay->size().y() ) );
0020 
0021     if ( !m_screenOverlay->icon().isNull() ) {
0022         m_pixmap = QPixmap::fromImage( m_screenOverlay->icon().scaled( size().toSize() ) );
0023     }
0024 }
0025 
0026 const GeoDataScreenOverlay *ScreenOverlayGraphicsItem::screenOverlay() const
0027 {
0028     return m_screenOverlay;
0029 }
0030 
0031 void ScreenOverlayGraphicsItem::setProjection( const ViewportParams *viewport )
0032 {
0033     ScreenGraphicsItem::setProjection( viewport );
0034     /** @todo: take overlayXY into account */
0035     setPosition( QPointF( pixelValue( m_screenOverlay->screenXY().xunit(),
0036                                       viewport->width(),
0037                                       size().width(),
0038                                       m_screenOverlay->screenXY().x() ),
0039        viewport->height()-pixelValue( m_screenOverlay->screenXY().yunit(),
0040                                       viewport->height(),
0041                                       size().height(),
0042                                       m_screenOverlay->screenXY().y() ) ) );
0043 }
0044 
0045 qreal ScreenOverlayGraphicsItem::pixelValue( GeoDataVec2::Unit unit, qreal screenSize, qreal imageSize, qreal value )
0046 {
0047     switch (unit) {
0048     case GeoDataVec2::Pixels:
0049         return imageSize;
0050     case GeoDataVec2::Fraction:
0051         return value * screenSize;
0052     case GeoDataVec2::InsetPixels:
0053         return screenSize - imageSize - value;
0054     }
0055 
0056     Q_ASSERT( false );
0057     return 0.0;
0058 }
0059 
0060 void ScreenOverlayGraphicsItem::paint( QPainter *painter )
0061 {
0062     if ( m_pixmap.isNull() ) {
0063         painter->setBrush( m_screenOverlay->color() );
0064         painter->drawRect( QRectF( QPointF( 0.0, 0.0 ), size() ) );
0065     } else {
0066         painter->drawPixmap( QPointF( 0.0, 0.0 ), m_pixmap );
0067     }
0068 }
0069 
0070 }