Marble

ScreenGraphicsItem.cpp
1// SPDX-License-Identifier: LGPL-2.1-or-later
2//
3// SPDX-FileCopyrightText: 2009-2010 Bastian Holst <bastianholst@gmx.de>
4//
5
6// Self
7#include "ScreenGraphicsItem.h"
8#include "ScreenGraphicsItem_p.h"
9
10// Marble
11#include "MarbleDebug.h"
12#include "MarbleWidget.h"
13
14// Qt
15#include <QMouseEvent>
16
17
18using namespace Marble;
19
20ScreenGraphicsItem::ScreenGraphicsItem( MarbleGraphicsItem *parent )
21 : MarbleGraphicsItem( new ScreenGraphicsItemPrivate( this, parent ) )
22{
23}
24
25ScreenGraphicsItem::ScreenGraphicsItem(ScreenGraphicsItemPrivate *dd)
26 : MarbleGraphicsItem(dd)
27{
28}
29
30ScreenGraphicsItem::~ScreenGraphicsItem()
31{
32}
33
34QPointF ScreenGraphicsItem::position() const
35{
36 Q_D(const ScreenGraphicsItem);
37 return d->m_position;
38}
39
40void ScreenGraphicsItem::setPosition( const QPointF& position )
41{
42 Q_D(ScreenGraphicsItem);
43 d->m_position = position;
44}
45
46QPointF ScreenGraphicsItem::positivePosition() const
47{
48 Q_D(const ScreenGraphicsItem);
49 return d->positivePosition();
50}
51
52QVector<QPointF> ScreenGraphicsItem::absolutePositions() const
53{
54 Q_D(const ScreenGraphicsItem);
55 return d->absolutePositions();
56}
57
58ScreenGraphicsItem::GraphicsItemFlags ScreenGraphicsItem::flags() const
59{
60 Q_D(const ScreenGraphicsItem);
61 return d->m_flags;
62}
63
64void ScreenGraphicsItem::setFlags( ScreenGraphicsItem::GraphicsItemFlags flags )
65{
66 Q_D(ScreenGraphicsItem);
67 d->m_flags = flags;
68}
69
70bool ScreenGraphicsItem::eventFilter( QObject *object, QEvent *e )
71{
72 MarbleWidget *widget = dynamic_cast<MarbleWidget*>(object);
73 if ( !widget ) {
74 return MarbleGraphicsItem::eventFilter( object, e );
75 }
76
77 Q_D(ScreenGraphicsItem);
78 if (!d->m_floatItemMoving) {
79 if ( MarbleGraphicsItem::eventFilter( object, e ) ) {
80 return true;
81 }
82
83 if (!visible() || !d->isMovable()) {
84 return false;
85 }
86
87 if ( e->type() == QEvent::MouseMove ) {
88 return false;
89 }
90
91 // Move ScreenGraphicsItem
92 if ( e->type() == QEvent::MouseButtonPress )
93 {
94 QMouseEvent *event = static_cast<QMouseEvent*>(e);
95
96 // Click and move above a float item triggers moving the float item
97 if ( contains( event->pos() ) ) {
98 if ( event->button() == Qt::LeftButton ) {
99 d->m_floatItemMoveStartPos = event->pos();
100 d->m_floatItemMoving = true;
101 return true;
102 }
103 }
104 }
105
106 return false;
107 }
108 else {
109 // Move ScreenGraphicsItem
110 if ( e->type() == QEvent::MouseMove
113 {
114 QMouseEvent *event = static_cast<QMouseEvent*>( e );
115 // The rect the item was painted on before. We add one pixel as antialiasing could
116 // result into painting on these pixels to.
117 QRectF floatItemRect = QRectF( positivePosition() - QPoint( 1, 1 ),
118 size() + QSize( 2, 2 ) );
119
120 if ( e->type() == QEvent::MouseMove && event->buttons() & Qt::LeftButton ) {
121 const QPoint &point = event->pos();
122 QPointF position = positivePosition();
123 qreal newX = qMax<qreal>(0, position.x() + point.x() - d->m_floatItemMoveStartPos.x());
124 qreal newY = qMax<qreal>(0, position.y() + point.y() - d->m_floatItemMoveStartPos.y());
125
126 // docking behavior
127 const qreal dockArea = 60.0; // Alignment area width/height
128 const qreal dockJump = 30.0; // Alignment indicator jump size
129 if ( widget->width()-size().width()-newX < dockArea ) {
130 newX = qMin( qreal( -1.0 ), size().width() + newX-widget->width() );
131 if (d->m_floatItemMoveStartPos.x() < event->pos().x()) {
132 // Indicate change to right alignment with a short jump
133 newX = qMax( newX, -(dockArea-dockJump) );
134 }
135 }
136 if ( widget->height()-size().height()-newY < dockArea ) {
137 newY = qMin( qreal( -1.0 ), size().height() + newY-widget->height() );
138 if (d->m_floatItemMoveStartPos.y() < event->pos().y()) {
139 // Indicate change to bottom alignment with a short jump
140 newY = qMax( newY, -( dockArea - dockJump ) );
141 }
142 }
143
144 setPosition( QPointF( newX,newY ) );
145 // The rect the item will be painted on now. We add one pixel as
146 // antialiasing could result into painting on these pixels to.
147 QRect newFloatItemRect = QRectF( positivePosition() - QPoint( 1, 1 ),
148 size() + QSize( 2, 2 ) ).toRect();
149 d->m_floatItemMoveStartPos = event->pos();
150 QRegion dirtyRegion( floatItemRect.toRect() );
151 dirtyRegion = dirtyRegion.united( newFloatItemRect );
152
153 widget->setAttribute( Qt::WA_NoSystemBackground, false );
154 widget->update(dirtyRegion);
155 widget->setAttribute( Qt::WA_NoSystemBackground, widget->viewport()->mapCoversViewport() );
156 return true;
157 }
158
159 if ( e->type() == QEvent::MouseButtonRelease ) {
160 d->m_floatItemMoving = false;
161 }
162
163 // Use a special cursor as long as the item is moved
164 if (d->m_floatItemMoving) {
166 return true;
167 }
168 }
169
170 return MarbleGraphicsItem::eventFilter( object, e );
171 }
172}
This file contains the headers for MarbleWidget.
A widget class that displays a view of the earth.
AKONADI_CALENDAR_EXPORT KCalendarCore::Event::Ptr event(const Akonadi::Item &item)
Binds a QML item to a specific geodetic location in screen coordinates.
Type type() const const
QPoint pos() const const
int x() const const
int y() const const
qreal x() const const
qreal y() const const
QRect toRect() const const
SizeAllCursor
LeftButton
WA_NoSystemBackground
void setCursor(const QCursor &)
void setAttribute(Qt::WidgetAttribute attribute, bool on)
void update()
Q_D(Todo)
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