1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt scene graph research project.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qxpaintitem.h"
#include "qxpaintitem_p.h"
#include "utilities.h"
/*!
\class QxPaintItem
The QxPaintItem makes it possible to use the QPainter API in a scene graph.
It sets up a textured rectangle in the scene graph and uses
a QPainter to paint onto the texture. Call update() to trigger a repaint.
QxPaintItem is meant to make it easier to port old code that is using the
QPainter API to the scene graph API.
*/
QxPaintItemPrivate::QxPaintItemPrivate()
: QxItemPrivate()
, m_opaque_painting(false)
, m_dirty(false)
{
}
/*!
Constructs a QxPaintItem with \a parent.
*/
QxPaintItem::QxPaintItem(QxItem *parent)
: QxItem(*(new QxPaintItemPrivate), parent)
{
Q_D(QxPaintItem);
d->m_node.setPaintItem(this);
}
/*!
\internal
*/
QxPaintItem::QxPaintItem(QxPaintItemPrivate &dd, QxItem *parent)
: QxItem(dd, parent)
{
Q_D(QxPaintItem);
d->m_node.setPaintItem(this);
}
/*!
Destroys the QxPaintItem.
*/
QxPaintItem::~QxPaintItem()
{
}
/*!
Causes a repaint of the item and the scene graph.
*/
void QxPaintItem::update()
{
Q_D(QxPaintItem);
d->m_dirty = true;
d->m_node.markDirty(Node::DirtyMaterial);
}
/*!
Initializes the item and triggers the first paint.
*/
void QxPaintItem::componentComplete()
{
Q_D(QxPaintItem);
QxItem::componentComplete();
d->m_node.setSize(size().toSize());
setPaintNode(&d->m_node);
update();
}
/*!
Updates the item geometry.
*/
void QxPaintItem::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
{
Q_D(QxPaintItem);
if (newGeometry.size() != oldGeometry.size()) {
d->m_node.setSize(newGeometry.size().toSize());
update();
}
QxItem::geometryChanged(newGeometry, oldGeometry);
}
/*!
Updates the item opacity.
*/
void QxPaintItem::renderOpacityChanged(qreal newOpacity, qreal oldOpacity)
{
Q_D(QxPaintItem);
if (newOpacity != oldOpacity)
d->m_node.setOpacity(newOpacity);
QxItem::renderOpacityChanged(newOpacity, oldOpacity);
}
/*!
Updates the item's texture filtering.
*/
void QxPaintItem::smoothChange(bool newSmooth, bool oldSmooth)
{
Q_D(QxPaintItem);
if (newSmooth != oldSmooth) {
d->m_node.setSmoothPainting(newSmooth);
d->m_node.setLinearFiltering(newSmooth);
update();
}
QxItem::smoothChange(newSmooth, oldSmooth);
}
/*!
Sets a hint saying that the item is painted opaque.
Set \a opaque to true if paint() fills the entire item with opaque pixels.
Setting \a opaque to true can improve performance. This property is
independent of opacity.
\sa opaquePainting()
*/
void QxPaintItem::setOpaquePainting(bool opaque)
{
Q_D(QxPaintItem);
if (opaque == d->m_opaque_painting)
return;
d->m_opaque_painting = opaque;
d->m_node.updateTexture();
}
/*!
Returns the hint saying that the item is painted opaque.
\sa opaquePainting()
*/
bool QxPaintItem::opaquePainting() const
{
Q_D(const QxPaintItem);
return d->m_opaque_painting;
}
void QxPaintItem::setDirty(bool dirty)
{
Q_D(QxPaintItem);
d->m_dirty = dirty;
}
bool QxPaintItem::isDirty() const
{
Q_D(const QxPaintItem);
return d->m_dirty;
}
|
