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
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "demotextitem.h"
#include "colors.h"
DemoTextItem::DemoTextItem(const QString &text, const QFont &font, const QColor &textColor,
float textWidth, QGraphicsScene *scene, QGraphicsItem *parent, TYPE type, const QColor &bgColor)
: DemoItem(scene, parent)
{
this->type = type;
this->text = text;
this->font = font;
this->textColor = textColor;
this->bgColor = bgColor;
this->textWidth = textWidth;
this->noSubPixeling = true;
}
void DemoTextItem::setText(const QString &text)
{
this->text = text;
this->update();
}
QImage *DemoTextItem::createImage(const QMatrix &matrix) const
{
if (this->type == DYNAMIC_TEXT)
return 0;
float sx = qMin(matrix.m11(), matrix.m22());
float sy = matrix.m22() < sx ? sx : matrix.m22();
QGraphicsTextItem textItem(0, 0);
textItem.setHtml(this->text);
textItem.setTextWidth(this->textWidth);
textItem.setFont(this->font);
textItem.setDefaultTextColor(this->textColor);
textItem.document()->setDocumentMargin(2);
float w = textItem.boundingRect().width();
float h = textItem.boundingRect().height();
QImage *image = new QImage(int(w * sx), int(h * sy), QImage::Format_ARGB32_Premultiplied);
image->fill(QColor(0, 0, 0, 0).rgba());
QPainter painter(image);
painter.scale(sx, sy);
QStyleOptionGraphicsItem style;
textItem.paint(&painter, &style, 0);
return image;
}
void DemoTextItem::animationStarted(int)
{
this->noSubPixeling = false;
}
void DemoTextItem::animationStopped(int)
{
this->noSubPixeling = true;
}
QRectF DemoTextItem::boundingRect() const
{
if (this->type == STATIC_TEXT)
return DemoItem::boundingRect();
return QRectF(0, 0, 50, 20); // Sorry for using magic number
}
void DemoTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
if (this->type == STATIC_TEXT) {
DemoItem::paint(painter, option, widget);
return;
}
painter->setPen(this->textColor);
painter->drawText(0, 0, this->text);
}
|
