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
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include <QtSvg>
#include "window.h"
#include "svgtextobject.h"
Window::Window()
{
setupGui();
setupTextObject();
setWindowTitle("Text Object Example");
}
//![1]
void Window::insertTextObject()
{
QString fileName = fileNameLineEdit->text();
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) {
QMessageBox::warning(this, tr("Error Opening File"),
tr("Could not open '%1'").arg(fileName));
}
QByteArray svgData = file.readAll();
//![1]
//![2]
QTextCharFormat svgCharFormat;
svgCharFormat.setObjectType(SvgTextFormat);
QSvgRenderer renderer(svgData);
QImage svgBufferImage(renderer.defaultSize(), QImage::Format_ARGB32);
QPainter painter(&svgBufferImage);
renderer.render(&painter, svgBufferImage.rect());
svgCharFormat.setProperty(SvgData, svgBufferImage);
QTextCursor cursor = textEdit->textCursor();
cursor.insertText(QString(QChar::ObjectReplacementCharacter), svgCharFormat);
textEdit->setTextCursor(cursor);
}
//![2]
//![3]
void Window::setupTextObject()
{
QObject *svgInterface = new SvgTextObject;
svgInterface->setParent(this);
textEdit->document()->documentLayout()->registerHandler(SvgTextFormat, svgInterface);
}
//![3]
void Window::setupGui()
{
fileNameLabel = new QLabel(tr("Svg File Name:"));
fileNameLineEdit = new QLineEdit;
insertTextObjectButton = new QPushButton(tr("Insert Image"));
fileNameLineEdit->setText(":/files/heart.svg");
connect(insertTextObjectButton, SIGNAL(clicked()),
this, SLOT(insertTextObject()));
QHBoxLayout *bottomLayout = new QHBoxLayout;
bottomLayout->addWidget(fileNameLabel);
bottomLayout->addWidget(fileNameLineEdit);
bottomLayout->addWidget(insertTextObjectButton);
textEdit = new QTextEdit;
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addWidget(textEdit);
mainLayout->addLayout(bottomLayout);
setLayout(mainLayout);
}
|
