qtextimagehandler.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see http://www.qt.io/terms-conditions. For further-
15** information use the contact form at http://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 2.1 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
23** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
24** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.-
25**-
26** As a special exception, The Qt Company gives you certain additional-
27** rights. These rights are described in The Qt Company LGPL Exception-
28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34-
35#include "qtextimagehandler_p.h"-
36-
37#include <qguiapplication.h>-
38#include <qtextformat.h>-
39#include <qpainter.h>-
40#include <qdebug.h>-
41#include <private/qtextengine_p.h>-
42#include <qpalette.h>-
43#include <qthread.h>-
44-
45QT_BEGIN_NAMESPACE-
46-
47extern QString qt_findAtNxFile(const QString &baseFileName, qreal targetDevicePixelRatio,-
48 qreal *sourceDevicePixelRatio);-
49static QString resolveFileName(QString fileName, QUrl *url, qreal targetDevicePixelRatio,-
50 qreal *sourceDevicePixelRatio)-
51{-
52 // We might use the fileName for loading if url loading fails-
53 // try to make sure it is a valid file path.-
54 // Also, QFile{Info}::exists works only on filepaths (not urls)-
55-
56 if (url->isValid()) {
url->isValid()Description
TRUEnever evaluated
FALSEnever evaluated
0
57 if (url->scheme() == QLatin1Literal("qrc")) {
url->scheme() ...Literal("qrc")Description
TRUEnever evaluated
FALSEnever evaluated
0
58 fileName = fileName.right(fileName.length() - 3);-
59 }
never executed: end of block
0
60 else if (url->scheme() == QLatin1Literal("file")) {
url->scheme() ...iteral("file")Description
TRUEnever evaluated
FALSEnever evaluated
0
61 fileName = url->toLocalFile();-
62 }
never executed: end of block
0
63 }
never executed: end of block
0
64-
65 if (targetDevicePixelRatio <= 1.0)
targetDevicePixelRatio <= 1.0Description
TRUEnever evaluated
FALSEnever evaluated
0
66 return fileName;
never executed: return fileName;
0
67-
68 // try to find a Nx version-
69 return qt_findAtNxFile(fileName, targetDevicePixelRatio, sourceDevicePixelRatio);
never executed: return qt_findAtNxFile(fileName, targetDevicePixelRatio, sourceDevicePixelRatio);
0
70}-
71-
72-
73static QPixmap getPixmap(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0)-
74{-
75 QPixmap pm;-
76-
77 QString name = format.name();-
78 if (name.startsWith(QLatin1String(":/"))) // auto-detect resources and convert them to url
name.startsWit...1String(":/"))Description
TRUEnever evaluated
FALSEnever evaluated
0
79 name.prepend(QLatin1String("qrc"));
never executed: name.prepend(QLatin1String("qrc"));
0
80 QUrl url = QUrl(name);-
81 qreal sourcePixelRatio = 1.0;-
82 name = resolveFileName(name, &url, devicePixelRatio, &sourcePixelRatio);-
83 const QVariant data = doc->resource(QTextDocument::ImageResource, url);-
84 if (data.type() == QVariant::Pixmap || data.type() == QVariant::Image) {
data.type() ==...ariant::PixmapDescription
TRUEnever evaluated
FALSEnever evaluated
data.type() == QVariant::ImageDescription
TRUEnever evaluated
FALSEnever evaluated
0
85 pm = qvariant_cast<QPixmap>(data);-
86 } else if (data.type() == QVariant::ByteArray) {
never executed: end of block
data.type() ==...ant::ByteArrayDescription
TRUEnever evaluated
FALSEnever evaluated
0
87 pm.loadFromData(data.toByteArray());-
88 }
never executed: end of block
0
89-
90 if (pm.isNull()) {
pm.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
91#if 0-
92 QString context;-
93 // ### Qt5-
94 QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent());-
95 if (browser)-
96 context = browser->source().toString();-
97#endif-
98 // try direct loading-
99 QImage img;-
100 if (name.isEmpty() || !img.load(name))
name.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
!img.load(name)Description
TRUEnever evaluated
FALSEnever evaluated
0
101 return QPixmap(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png"));
never executed: return QPixmap(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png"));
0
102-
103 pm = QPixmap::fromImage(img);-
104 doc->addResource(QTextDocument::ImageResource, url, pm);-
105 }
never executed: end of block
0
106-
107 if (name.contains(QStringLiteral("@2x")))
never executed: return qstring_literal_temp;
name.contains(...al_temp; }()))Description
TRUEnever evaluated
FALSEnever evaluated
0
108 pm.setDevicePixelRatio(sourcePixelRatio);
never executed: pm.setDevicePixelRatio(sourcePixelRatio);
0
109-
110 return pm;
never executed: return pm;
0
111}-
112-
113static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format)-
114{-
115 QPixmap pm;-
116-
117 const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);-
118 const int width = qRound(format.width());-
119 const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);-
120 const int height = qRound(format.height());-
121-
122 QSize size(width, height);-
123 if (!hasWidth || !hasHeight) {
!hasWidthDescription
TRUEnever evaluated
FALSEnever evaluated
!hasHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
124 pm = getPixmap(doc, format);-
125 const int pmWidth = pm.width() / pm.devicePixelRatio();-
126 const int pmHeight = pm.height() / pm.devicePixelRatio();-
127-
128 if (!hasWidth) {
!hasWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
129 if (!hasHeight)
!hasHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
130 size.setWidth(pmWidth);
never executed: size.setWidth(pmWidth);
0
131 else-
132 size.setWidth(qRound(height * (pmWidth / (qreal) pmHeight)));
never executed: size.setWidth(qRound(height * (pmWidth / (qreal) pmHeight)));
0
133 }-
134 if (!hasHeight) {
!hasHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
135 if (!hasWidth)
!hasWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
136 size.setHeight(pmHeight);
never executed: size.setHeight(pmHeight);
0
137 else-
138 size.setHeight(qRound(width * (pmHeight / (qreal) pmWidth)));
never executed: size.setHeight(qRound(width * (pmHeight / (qreal) pmWidth)));
0
139 }-
140 }
never executed: end of block
0
141-
142 qreal scale = 1.0;-
143 QPaintDevice *pdev = doc->documentLayout()->paintDevice();-
144 if (pdev) {
pdevDescription
TRUEnever evaluated
FALSEnever evaluated
0
145 if (pm.isNull())
pm.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
146 pm = getPixmap(doc, format);
never executed: pm = getPixmap(doc, format);
0
147 if (!pm.isNull())
!pm.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
148 scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
never executed: scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
0
149 }
never executed: end of block
0
150 size *= scale;-
151-
152 return size;
never executed: return size;
0
153}-
154-
155static QImage getImage(QTextDocument *doc, const QTextImageFormat &format, const qreal devicePixelRatio = 1.0)-
156{-
157 QImage image;-
158-
159 QString name = format.name();-
160 if (name.startsWith(QLatin1String(":/"))) // auto-detect resources
name.startsWit...1String(":/"))Description
TRUEnever evaluated
FALSEnever evaluated
0
161 name.prepend(QLatin1String("qrc"));
never executed: name.prepend(QLatin1String("qrc"));
0
162 QUrl url = QUrl(name);-
163 qreal sourcePixelRatio = 1.0;-
164 name = resolveFileName(name, &url, devicePixelRatio, &sourcePixelRatio);-
165 const QVariant data = doc->resource(QTextDocument::ImageResource, url);-
166 if (data.type() == QVariant::Image) {
data.type() == QVariant::ImageDescription
TRUEnever evaluated
FALSEnever evaluated
0
167 image = qvariant_cast<QImage>(data);-
168 } else if (data.type() == QVariant::ByteArray) {
never executed: end of block
data.type() ==...ant::ByteArrayDescription
TRUEnever evaluated
FALSEnever evaluated
0
169 image.loadFromData(data.toByteArray());-
170 }
never executed: end of block
0
171-
172 if (image.isNull()) {
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
173#if 0-
174 QString context;-
175 // ### Qt5-
176 QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent());-
177 if (browser)-
178 context = browser->source().toString();-
179#endif-
180 // try direct loading-
181-
182 if (name.isEmpty() || !image.load(name))
name.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
!image.load(name)Description
TRUEnever evaluated
FALSEnever evaluated
0
183 return QImage(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png"));
never executed: return QImage(QLatin1String(":/qt-project.org/styles/commonstyle/images/file-16.png"));
0
184-
185 doc->addResource(QTextDocument::ImageResource, url, image);-
186 }
never executed: end of block
0
187-
188 if (sourcePixelRatio != 1.0)
sourcePixelRatio != 1.0Description
TRUEnever evaluated
FALSEnever evaluated
0
189 image.setDevicePixelRatio(sourcePixelRatio);
never executed: image.setDevicePixelRatio(sourcePixelRatio);
0
190-
191 return image;
never executed: return image;
0
192}-
193-
194static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format)-
195{-
196 QImage image;-
197-
198 const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);-
199 const int width = qRound(format.width());-
200 const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);-
201 const int height = qRound(format.height());-
202-
203 QSize size(width, height);-
204 if (!hasWidth || !hasHeight) {
!hasWidthDescription
TRUEnever evaluated
FALSEnever evaluated
!hasHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
205 image = getImage(doc, format);-
206 if (!hasWidth)
!hasWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
207 size.setWidth(image.width() / image.devicePixelRatio());
never executed: size.setWidth(image.width() / image.devicePixelRatio());
0
208 if (!hasHeight)
!hasHeightDescription
TRUEnever evaluated
FALSEnever evaluated
0
209 size.setHeight(image.height() / image.devicePixelRatio());
never executed: size.setHeight(image.height() / image.devicePixelRatio());
0
210 }
never executed: end of block
0
211-
212 qreal scale = 1.0;-
213 QPaintDevice *pdev = doc->documentLayout()->paintDevice();-
214 if (pdev) {
pdevDescription
TRUEnever evaluated
FALSEnever evaluated
0
215 if (image.isNull())
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
216 image = getImage(doc, format);
never executed: image = getImage(doc, format);
0
217 if (!image.isNull())
!image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
218 scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
never executed: scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
0
219 }
never executed: end of block
0
220 size *= scale;-
221-
222 return size;
never executed: return size;
0
223}-
224-
225QTextImageHandler::QTextImageHandler(QObject *parent)-
226 : QObject(parent)-
227{-
228}
never executed: end of block
0
229-
230QSizeF QTextImageHandler::intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format)-
231{-
232 Q_UNUSED(posInDocument)-
233 const QTextImageFormat imageFormat = format.toImageFormat();-
234-
235 if (QCoreApplication::instance()->thread() != QThread::currentThread())
QCoreApplicati...urrentThread()Description
TRUEnever evaluated
FALSEnever evaluated
0
236 return getImageSize(doc, imageFormat);
never executed: return getImageSize(doc, imageFormat);
0
237 return getPixmapSize(doc, imageFormat);
never executed: return getPixmapSize(doc, imageFormat);
0
238}-
239-
240QImage QTextImageHandler::image(QTextDocument *doc, const QTextImageFormat &imageFormat)-
241{-
242 Q_ASSERT(doc != 0);-
243-
244 return getImage(doc, imageFormat);
never executed: return getImage(doc, imageFormat);
0
245}-
246-
247void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format)-
248{-
249 Q_UNUSED(posInDocument)-
250 const QTextImageFormat imageFormat = format.toImageFormat();-
251-
252 if (QCoreApplication::instance()->thread() != QThread::currentThread()) {
QCoreApplicati...urrentThread()Description
TRUEnever evaluated
FALSEnever evaluated
0
253 const QImage image = getImage(doc, imageFormat, p->device()->devicePixelRatioF());-
254 p->drawImage(rect, image, image.rect());-
255 } else {
never executed: end of block
0
256 const QPixmap pixmap = getPixmap(doc, imageFormat, p->device()->devicePixelRatioF());-
257 p->drawPixmap(rect, pixmap, pixmap.rect());-
258 }
never executed: end of block
0
259}-
260-
261QT_END_NAMESPACE-
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