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40 ****************************************************************************/
43 #include "qtextimagehandler_p.h"
45 #include <qcoreapplication.h>
46 #include <qtextformat.h>
49 #include <private/qtextengine_p.h>
55 // set by the mime source factory in Qt3Compat
56 QTextImageHandler::ExternalImageLoaderFunction QTextImageHandler::externalLoader = 0;
58 static QPixmap getPixmap(QTextDocument *doc, const QTextImageFormat &format)
62 QString name = format.name();
63 if (name.startsWith(QLatin1String(":/"))) // auto-detect resources
64 name.prepend(QLatin1String("qrc"));
65 QUrl url = QUrl::fromEncoded(name.toUtf8());
66 const QVariant data = doc->resource(QTextDocument::ImageResource, url);
67 if (data.type() == QVariant::Pixmap || data.type() == QVariant::Image) {
68 pm = qvariant_cast<QPixmap>(data);
69 } else if (data.type() == QVariant::ByteArray) {
70 pm.loadFromData(data.toByteArray());
77 QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent());
79 context = browser->source().toString();
82 if (QTextImageHandler::externalLoader)
83 img = QTextImageHandler::externalLoader(name, context);
85 if (img.isNull()) { // try direct loading
86 name = format.name(); // remove qrc:/ prefix again
87 if (name.isEmpty() || !img.load(name))
88 return QPixmap(QLatin1String(":/trolltech/styles/commonstyle/images/file-16.png"));
90 pm = QPixmap::fromImage(img);
91 doc->addResource(QTextDocument::ImageResource, url, pm);
97 static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format)
101 const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
102 const int width = qRound(format.width());
103 const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
104 const int height = qRound(format.height());
106 QSize size(width, height);
107 if (!hasWidth || !hasHeight) {
108 pm = getPixmap(doc, format);
111 size.setWidth(pm.width());
113 size.setWidth(qRound(height * (pm.width() / (qreal) pm.height())));
117 size.setHeight(pm.height());
119 size.setHeight(qRound(width * (pm.height() / (qreal) pm.width())));
124 QPaintDevice *pdev = doc->documentLayout()->paintDevice();
127 pm = getPixmap(doc, format);
129 scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
136 static QImage getImage(QTextDocument *doc, const QTextImageFormat &format)
140 QString name = format.name();
141 if (name.startsWith(QLatin1String(":/"))) // auto-detect resources
142 name.prepend(QLatin1String("qrc"));
143 QUrl url = QUrl::fromEncoded(name.toUtf8());
144 const QVariant data = doc->resource(QTextDocument::ImageResource, url);
145 if (data.type() == QVariant::Image) {
146 image = qvariant_cast<QImage>(data);
147 } else if (data.type() == QVariant::ByteArray) {
148 image.loadFromData(data.toByteArray());
151 if (image.isNull()) {
156 QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent());
158 context = browser->source().toString();
160 if (QTextImageHandler::externalLoader)
161 image = QTextImageHandler::externalLoader(name, context);
163 if (image.isNull()) { // try direct loading
164 name = format.name(); // remove qrc:/ prefix again
165 if (name.isEmpty() || !image.load(name))
166 return QImage(QLatin1String(":/trolltech/styles/commonstyle/images/file-16.png"));
168 doc->addResource(QTextDocument::ImageResource, url, image);
174 static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format)
178 const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth);
179 const int width = qRound(format.width());
180 const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight);
181 const int height = qRound(format.height());
183 QSize size(width, height);
184 if (!hasWidth || !hasHeight) {
185 image = getImage(doc, format);
187 size.setWidth(image.width());
189 size.setHeight(image.height());
193 QPaintDevice *pdev = doc->documentLayout()->paintDevice();
196 image = getImage(doc, format);
198 scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi());
205 QTextImageHandler::QTextImageHandler(QObject *parent)
210 QSizeF QTextImageHandler::intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format)
212 Q_UNUSED(posInDocument)
213 const QTextImageFormat imageFormat = format.toImageFormat();
215 if (QCoreApplication::instance()->thread() != QThread::currentThread())
216 return getImageSize(doc, imageFormat);
217 return getPixmapSize(doc, imageFormat);
220 QImage QTextImageHandler::image(QTextDocument *doc, const QTextImageFormat &imageFormat)
224 return getImage(doc, imageFormat);
227 void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format)
229 Q_UNUSED(posInDocument)
230 const QTextImageFormat imageFormat = format.toImageFormat();
232 if (QCoreApplication::instance()->thread() != QThread::currentThread()) {
233 const QImage image = getImage(doc, imageFormat);
234 p->drawImage(rect, image, image.rect());
236 const QPixmap pixmap = getPixmap(doc, imageFormat);
237 p->drawPixmap(rect, pixmap, pixmap.rect());