author | Eckhart Koeppen <eckhart.koppen@nokia.com> |
Wed, 21 Apr 2010 20:15:53 +0300 | |
branch | RCL_3 |
changeset 14 | c0432d11811c |
parent 4 | 3b1da2848fc7 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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3b1da2848fc7
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the QtGui module of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#include "qtextimagehandler_p.h" |
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#include <qapplication.h> |
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#include <qtextformat.h> |
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#include <qpainter.h> |
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#include <qdebug.h> |
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#include <private/qtextengine_p.h> |
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#include <qpalette.h> |
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#include <qtextbrowser.h> |
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#include <qthread.h> |
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QT_BEGIN_NAMESPACE |
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// set by the mime source factory in Qt3Compat |
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QTextImageHandler::ExternalImageLoaderFunction QTextImageHandler::externalLoader = 0; |
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static QPixmap getPixmap(QTextDocument *doc, const QTextImageFormat &format) |
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{ |
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QPixmap pm; |
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QString name = format.name(); |
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if (name.startsWith(QLatin1String(":/"))) // auto-detect resources |
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name.prepend(QLatin1String("qrc")); |
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QUrl url = QUrl::fromEncoded(name.toUtf8()); |
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const QVariant data = doc->resource(QTextDocument::ImageResource, url); |
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if (data.type() == QVariant::Pixmap || data.type() == QVariant::Image) { |
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pm = qvariant_cast<QPixmap>(data); |
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} else if (data.type() == QVariant::ByteArray) { |
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pm.loadFromData(data.toByteArray()); |
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} |
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if (pm.isNull()) { |
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QString context; |
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#ifndef QT_NO_TEXTBROWSER |
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QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent()); |
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if (browser) |
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context = browser->source().toString(); |
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#endif |
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QImage img; |
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if (QTextImageHandler::externalLoader) |
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img = QTextImageHandler::externalLoader(name, context); |
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if (img.isNull()) { // try direct loading |
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name = format.name(); // remove qrc:/ prefix again |
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if (name.isEmpty() || !img.load(name)) |
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return QPixmap(QLatin1String(":/trolltech/styles/commonstyle/images/file-16.png")); |
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} |
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pm = QPixmap::fromImage(img); |
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doc->addResource(QTextDocument::ImageResource, url, pm); |
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} |
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return pm; |
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} |
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static QSize getPixmapSize(QTextDocument *doc, const QTextImageFormat &format) |
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{ |
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QPixmap pm; |
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const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth); |
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const int width = qRound(format.width()); |
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const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight); |
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const int height = qRound(format.height()); |
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QSize size(width, height); |
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if (!hasWidth || !hasHeight) { |
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pm = getPixmap(doc, format); |
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if (!hasWidth) { |
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if (!hasHeight) |
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size.setWidth(pm.width()); |
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else |
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size.setWidth(qRound(height * (pm.width() / (qreal) pm.height()))); |
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} |
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if (!hasHeight) { |
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if (!hasWidth) |
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size.setHeight(pm.height()); |
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else |
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size.setHeight(qRound(width * (pm.height() / (qreal) pm.width()))); |
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} |
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} |
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qreal scale = 1.0; |
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QPaintDevice *pdev = doc->documentLayout()->paintDevice(); |
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if (pdev) { |
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14
c0432d11811c
eb175c3290cd7ea85da4a590db9461504a4904bc
Eckhart Koeppen <eckhart.koppen@nokia.com>
parents:
4
diff
changeset
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Q_GUI_EXPORT extern int qt_defaultDpi(); |
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if (pm.isNull()) |
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pm = getPixmap(doc, format); |
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if (!pm.isNull()) |
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scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi()); |
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} |
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size *= scale; |
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return size; |
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} |
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static QImage getImage(QTextDocument *doc, const QTextImageFormat &format) |
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{ |
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QImage image; |
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QString name = format.name(); |
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if (name.startsWith(QLatin1String(":/"))) // auto-detect resources |
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name.prepend(QLatin1String("qrc")); |
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QUrl url = QUrl::fromEncoded(name.toUtf8()); |
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const QVariant data = doc->resource(QTextDocument::ImageResource, url); |
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if (data.type() == QVariant::Image) { |
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image = qvariant_cast<QImage>(data); |
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} else if (data.type() == QVariant::ByteArray) { |
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image.loadFromData(data.toByteArray()); |
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} |
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if (image.isNull()) { |
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QString context; |
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#ifndef QT_NO_TEXTBROWSER |
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QTextBrowser *browser = qobject_cast<QTextBrowser *>(doc->parent()); |
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if (browser) |
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context = browser->source().toString(); |
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#endif |
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if (QTextImageHandler::externalLoader) |
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image = QTextImageHandler::externalLoader(name, context); |
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if (image.isNull()) { // try direct loading |
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name = format.name(); // remove qrc:/ prefix again |
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if (name.isEmpty() || !image.load(name)) |
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return QImage(QLatin1String(":/trolltech/styles/commonstyle/images/file-16.png")); |
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} |
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doc->addResource(QTextDocument::ImageResource, url, image); |
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} |
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return image; |
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} |
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static QSize getImageSize(QTextDocument *doc, const QTextImageFormat &format) |
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{ |
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QImage image; |
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const bool hasWidth = format.hasProperty(QTextFormat::ImageWidth); |
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const int width = qRound(format.width()); |
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const bool hasHeight = format.hasProperty(QTextFormat::ImageHeight); |
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const int height = qRound(format.height()); |
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QSize size(width, height); |
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if (!hasWidth || !hasHeight) { |
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image = getImage(doc, format); |
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if (!hasWidth) |
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size.setWidth(image.width()); |
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if (!hasHeight) |
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size.setHeight(image.height()); |
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} |
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qreal scale = 1.0; |
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QPaintDevice *pdev = doc->documentLayout()->paintDevice(); |
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if (pdev) { |
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extern int qt_defaultDpi(); |
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if (image.isNull()) |
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image = getImage(doc, format); |
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if (!image.isNull()) |
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scale = qreal(pdev->logicalDpiY()) / qreal(qt_defaultDpi()); |
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} |
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size *= scale; |
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return size; |
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} |
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QTextImageHandler::QTextImageHandler(QObject *parent) |
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: QObject(parent) |
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{ |
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} |
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QSizeF QTextImageHandler::intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format) |
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{ |
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Q_UNUSED(posInDocument) |
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const QTextImageFormat imageFormat = format.toImageFormat(); |
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if (qApp->thread() != QThread::currentThread()) |
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return getImageSize(doc, imageFormat); |
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return getPixmapSize(doc, imageFormat); |
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} |
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void QTextImageHandler::drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) |
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{ |
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Q_UNUSED(posInDocument) |
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const QTextImageFormat imageFormat = format.toImageFormat(); |
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if (qApp->thread() != QThread::currentThread()) { |
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const QImage image = getImage(doc, imageFormat); |
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p->drawImage(rect, image, image.rect()); |
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} else { |
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const QPixmap pixmap = getPixmap(doc, imageFormat); |
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p->drawPixmap(rect, pixmap, pixmap.rect()); |
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} |
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} |
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QT_END_NAMESPACE |