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
191
192
193
194
195
196
197
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qtextimagehandler_p.h"
#include <qguiapplication.h>
#include <qtextformat.h>
#include <qpainter.h>
#include <qdebug.h>
#include <qfile.h>
#include <private/qtextengine_p.h>
#include <qpalette.h>
#include <qthread.h>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
extern QString qt_findAtNxFile(const QString &baseFileName, qreal targetDevicePixelRatio,
qreal *sourceDevicePixelRatio);
static inline QUrl fromLocalfileOrResources(QString path)
{
if (path.startsWith(":/"_L1)) // auto-detect resources and convert them to url
path.prepend("qrc"_L1);
return QUrl(path);
}
static QPixmap getPixmap(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0)
{
qreal sourcePixelRatio = 1.0;
const QString name = qt_findAtNxFile(format.name(), devicePixelRatio, &sourcePixelRatio);
const QUrl url = fromLocalfileOrResources(name);
QPixmap pm;
const QVariant data = doc->resource(QTextDocument::ImageResource, url);
if (data.userType() == QMetaType::QPixmap || data.userType() == QMetaType::QImage) {
pm = qvariant_cast<QPixmap>(data);
} else if (data.userType() == QMetaType::QByteArray) {
pm.loadFromData(data.toByteArray());
}
if (pm.isNull()) {
QImage img;
if (name.isEmpty() || !img.load(name))
return QPixmap(":/qt-project.org/styles/commonstyle/images/file-16.png"_L1);
pm = QPixmap::fromImage(img);
doc->addResource(QTextDocument::ImageResource, url, pm);
}
if (name.contains("@2x"_L1))
pm.setDevicePixelRatio(sourcePixelRatio);
return pm;
}
static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format)
{
QPixmap pm;
const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
const int width = qRound(format.width());
const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
const int height = qRound(format.height());
QSize size(width, height);
if (!hasWidth || !hasHeight) {
pm = getPixmap(doc, format);
const QSizeF pmSize = pm.deviceIndependentSize();
if (!hasWidth) {
if (!hasHeight)
size.setWidth(pmSize.width());
else
size.setWidth(qRound(height * (pmSize.width() / (qreal) pmSize.height())));
}
if (!hasHeight) {
if (!hasWidth)
size.setHeight(pmSize.height());
else
size.setHeight(qRound(width * (pmSize.height() / (qreal) pmSize.width())));
}
}
qreal scale = 1.0;
QPaintDevice *pdev = doc->documentLayout()->paintDevice();
if (pdev) {
if (pm.isNull())
pm = getPixmap(doc, format);
if (!pm.isNull())
scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
}
size *= scale;
return size;
}
static QImage getImage(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0)
{
qreal sourcePixelRatio = 1.0;
const QString name = qt_findAtNxFile(format.name(), devicePixelRatio, &sourcePixelRatio);
const QUrl url = fromLocalfileOrResources(name);
QImage image;
const QVariant data = doc->resource(QTextDocument::ImageResource, url);
if (data.userType() == QMetaType::QImage) {
image = qvariant_cast<QImage>(data);
} else if (data.userType() == QMetaType::QByteArray) {
image.loadFromData(data.toByteArray());
}
if (image.isNull()) {
if (name.isEmpty() || !image.load(name))
return QImage(":/qt-project.org/styles/commonstyle/images/file-16.png"_L1);
doc->addResource(QTextDocument::ImageResource, url, image);
}
if (sourcePixelRatio != 1.0)
image.setDevicePixelRatio(sourcePixelRatio);
return image;
}
static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format)
{
QImage image;
const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
const int width = qRound(format.width());
const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
const int height = qRound(format.height());
QSize size(width, height);
if (!hasWidth || !hasHeight) {
image = getImage(doc, format);
QSizeF imageSize = image.deviceIndependentSize();
if (!hasWidth)
size.setWidth(imageSize.width());
if (!hasHeight)
size.setHeight(imageSize.height());
}
qreal scale = 1.0;
QPaintDevice *pdev = doc->documentLayout()->paintDevice();
if (pdev) {
if (image.isNull())
image = getImage(doc, format);
if (!image.isNull())
scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
}
size *= scale;
return size;
}
QTextImageHandler::QTextImageHandler(QObject *parent)
: QObject(parent)
{
}
QSizeF QTextImageHandler::intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format)
{
Q_UNUSED(posInDocument);
const QTextImageFormat imageFormat = format.toImageFormat();
if (QCoreApplication::instance()->thread() != QThread::currentThread())
return getImageSize(doc, imageFormat);
return getPixmapSize(doc, imageFormat);
}
QImage QTextImageHandler::image(QTextDocument *doc, const QTextImageFormat &imageFormat)
{
Q_ASSERT(doc != nullptr);
return getImage(doc, imageFormat);
}
void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format)
{
Q_UNUSED(posInDocument);
const QTextImageFormat imageFormat = format.toImageFormat();
if (QCoreApplication::instance()->thread() != QThread::currentThread()) {
const QImage image = getImage(doc, imageFormat, p->device()->devicePixelRatio());
p->drawImage(rect, image, image.rect());
} else {
const QPixmap pixmap = getPixmap(doc, imageFormat, p->device()->devicePixelRatio());
p->drawPixmap(rect, pixmap, pixmap.rect());
}
}
QT_END_NAMESPACE
#include "moc_qtextimagehandler_p.cpp"
|
