Marble

GeoPhotoGraphicsItem.cpp
1// SPDX-License-Identifier: LGPL-2.1-or-later
2//
3// SPDX-FileCopyrightText: 2012 Dennis Nienhüser <nienhueser@kde.org>
4//
5
6#include "GeoPhotoGraphicsItem.h"
7
8#include "GeoPainter.h"
9#include "GeoDataStyle.h"
10#include "GeoDataIconStyle.h"
11#include "GeoDataFeature.h"
12#include "StyleBuilder.h"
13#include "ViewportParams.h"
14
15#include <QDebug>
16
17namespace Marble
18{
19
20GeoPhotoGraphicsItem::GeoPhotoGraphicsItem( const GeoDataFeature *feature )
21 : GeoGraphicsItem( feature )
22{
23 if (feature) {
24 QString const paintLayer = QStringLiteral("Photo");
25 setPaintLayers(QStringList() << paintLayer);
26 }
27}
28
29void GeoPhotoGraphicsItem::paint(GeoPainter* painter, const ViewportParams* viewport , const QString &layer, int tileZoomLevel)
30{
31 Q_UNUSED(layer);
32 Q_UNUSED(tileZoomLevel);
33 /* The code below loads the image lazily (only
34 * when it will actually be displayed). Once it was
35 * loaded but moves out of the viewport, it is unloaded
36 * again. Otherwise memory consumption gets quite high
37 * for a large set of photos
38 */
39 bool unloadImage = true;
40
41 qreal x(0.0), y( 0.0 );
42 viewport->screenCoordinates( m_point.coordinates(), x, y );
43
44 QRectF position( QPointF( x, y ), style()->iconStyle().icon().size() );
45 position.moveCenter( QPointF( x, y ) );
46
47 QRectF displayed = position & QRectF( QPointF( 0, 0 ), viewport->size() );
48
49 if ( !displayed.isEmpty() ) {
50 if ( m_photo.isNull() ) {
51 m_photo = style()->iconStyle().icon();
52 }
53 unloadImage = false;
54 painter->drawImage( position, m_photo );
55 }
56
57 if ( unloadImage ) {
58 m_photo = QImage();
59 }
60}
61
62const GeoDataLatLonAltBox& GeoPhotoGraphicsItem::latLonAltBox() const
63{
64 return m_point.latLonAltBox();
65}
66
67bool GeoPhotoGraphicsItem::contains(const QPoint &curpos, const ViewportParams *viewport) const
68{
69 qreal x(0.0), y( 0.0 );
70 viewport->screenCoordinates(m_point.coordinates(), x, y);
71 auto itemStyle = style();
72 if (itemStyle != nullptr && !itemStyle->iconStyle().icon().isNull()) {
73 int halfIconWidth = itemStyle->iconStyle().icon().size().width() / 2;
74 int halfIconHeight = itemStyle->iconStyle().icon().size().height() / 2;
75
76 if ( x - halfIconWidth < curpos.x() &&
77 curpos.x() < x + halfIconWidth &&
78 y - halfIconHeight / 2 < curpos.y() &&
79 curpos.y() < y + halfIconHeight / 2 ) {
80 return true;
81 }
82 } else if ( curpos.x() == x && curpos.y() == y ) {
83 return true;
84 }
85
86 return false;
87}
88
89void GeoPhotoGraphicsItem::setPoint( const GeoDataPoint &point )
90{
91 m_point = point;
92}
93
94GeoDataPoint GeoPhotoGraphicsItem::point() const
95{
96 return m_point;
97}
98
99}
This file contains the headers for ViewportParams.
Binds a QML item to a specific geodetic location in screen coordinates.
int x() const const
int y() const const
bool isEmpty() const const
This file is part of the KDE documentation.
Documentation copyright © 1996-2024 The KDE developers.
Generated on Fri May 24 2024 11:50:53 by doxygen 1.10.0 written by Dimitri van Heesch, © 1997-2006

KDE's Doxygen guidelines are available online.