+ Webkit based SVG image format
This commit is contained in:
wmayer
parent
680f4c82f7
commit
11d3d51505
94
src/Tools/plugins/imageformats/svg/main.cpp
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94
src/Tools/plugins/imageformats/svg/main.cpp
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@ -0,0 +1,94 @@
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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||||
**
|
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** This file is part of the plugins of the Qt Toolkit.
|
||||
**
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||||
** $QT_BEGIN_LICENSE:LGPL$
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||||
** Commercial License Usage
|
||||
** Licensees holding valid commercial Qt licenses may use this file in
|
||||
** accordance with the commercial license agreement provided with the
|
||||
** Software or, alternatively, in accordance with the terms contained in
|
||||
** a written agreement between you and Digia. For licensing terms and
|
||||
** conditions see http://qt.digia.com/licensing. For further information
|
||||
** use the contact form at http://qt.digia.com/contact-us.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 2.1 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 2.1 requirements
|
||||
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Digia gives you certain additional
|
||||
** rights. These rights are described in the Digia Qt LGPL Exception
|
||||
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU
|
||||
** General Public License version 3.0 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.GPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU General Public License version 3.0 requirements will be
|
||||
** met: http://www.gnu.org/copyleft/gpl.html.
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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 <qimageiohandler.h>
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#include <qstringlist.h>
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#if !defined(QT_NO_IMAGEFORMATPLUGIN) && !defined(QT_NO_SVGRENDERER)
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#include "qsvgiohandler.h"
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#include <qiodevice.h>
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#include <qbytearray.h>
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#include <qdebug.h>
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QT_BEGIN_NAMESPACE
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class QSvgPlugin : public QImageIOPlugin
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{
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public:
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QStringList keys() const;
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Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
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QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
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};
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QStringList QSvgPlugin::keys() const
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{
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return QStringList() << QLatin1String("svg") << QLatin1String("svgz");
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}
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QImageIOPlugin::Capabilities QSvgPlugin::capabilities(QIODevice *device, const QByteArray &format) const
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{
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if (format == "svg" || format == "svgz")
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return Capabilities(CanRead);
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if (!format.isEmpty())
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return 0;
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Capabilities cap;
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if (device->isReadable() && QSvgIOHandler::canRead(device))
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cap |= CanRead;
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return cap;
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}
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QImageIOHandler *QSvgPlugin::create(QIODevice *device, const QByteArray &format) const
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{
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QSvgIOHandler *hand = new QSvgIOHandler();
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hand->setDevice(device);
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hand->setFormat(format);
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return hand;
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}
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Q_EXPORT_STATIC_PLUGIN(QSvgPlugin)
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Q_EXPORT_PLUGIN2(qsvg, QSvgPlugin)
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QT_END_NAMESPACE
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#endif // !QT_NO_IMAGEFORMATPLUGIN
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305
src/Tools/plugins/imageformats/svg/qsvgiohandler.cpp
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305
src/Tools/plugins/imageformats/svg/qsvgiohandler.cpp
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@ -0,0 +1,305 @@
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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
|
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** This file is part of the plugins of the Qt Toolkit.
|
||||
**
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** Commercial License Usage
|
||||
** Licensees holding valid commercial Qt licenses may use this file in
|
||||
** accordance with the commercial license agreement provided with the
|
||||
** Software or, alternatively, in accordance with the terms contained in
|
||||
** a written agreement between you and Digia. For licensing terms and
|
||||
** conditions see http://qt.digia.com/licensing. For further information
|
||||
** use the contact form at http://qt.digia.com/contact-us.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 2.1 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 2.1 requirements
|
||||
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Digia gives you certain additional
|
||||
** rights. These rights are described in the Digia Qt LGPL Exception
|
||||
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU
|
||||
** General Public License version 3.0 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.GPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU General Public License version 3.0 requirements will be
|
||||
** met: http://www.gnu.org/copyleft/gpl.html.
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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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// Changes: Use Webkit engine instead of SVG renderer
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#include "qsvgiohandler.h"
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#ifndef QT_NO_SVGRENDERER
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#include "qwebview.h"
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#include "qxmlstream.h"
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#include "qwebframe.h"
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#include "qimage.h"
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#include "qpixmap.h"
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#include "qpainter.h"
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#include "qvariant.h"
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#include "qbuffer.h"
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#include "qdebug.h"
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QT_BEGIN_NAMESPACE
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class QSvgIOHandlerPrivate
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{
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public:
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QSvgIOHandlerPrivate(QSvgIOHandler *qq)
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: q(qq), loaded(false), readDone(false), backColor(Qt::transparent)
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{
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QPalette pal = webView.palette();
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pal.setColor(QPalette::Background, backColor);
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webView.setPalette(pal);
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}
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bool load(QIODevice *device);
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QSvgIOHandler *q;
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QWebView webView;
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QXmlStreamReader xmlReader;
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QSize defaultSize;
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QRect clipRect;
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QSize scaledSize;
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QRect scaledClipRect;
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bool loaded;
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bool readDone;
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QColor backColor;
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};
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bool QSvgIOHandlerPrivate::load(QIODevice *device)
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{
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if (loaded)
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return true;
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if (q->format().isEmpty())
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q->canRead();
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// # The SVG renderer doesn't handle trailing, unrelated data, so we must
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// assume that all available data in the device is to be read.
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bool res = false;
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#if 0
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QBuffer *buf = qobject_cast<QBuffer *>(device);
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if (buf) {
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const QByteArray &ba = buf->data();
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res = r.load(QByteArray::fromRawData(ba.constData() + buf->pos(), ba.size() - buf->pos()));
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buf->seek(ba.size());
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} else if (q->format() == "svgz") {
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res = r.load(device->readAll());
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} else {
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xmlReader.setDevice(device);
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res = r.load(&xmlReader);
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}
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if (res) {
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defaultSize = QSize(r.viewBox().width(), r.viewBox().height());
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loaded = true;
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}
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#else
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webView.setContent(device->readAll(), QString::fromAscii("image/svg+xml"));
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QString node = QString::fromAscii("document.rootElement.nodeName");
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QString root = webView.page()->mainFrame()->evaluateJavaScript(node).toString();
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if (!root.isEmpty() && root.compare(QLatin1String("svg"), Qt::CaseInsensitive) == 0) {
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QString w = QString::fromAscii("document.rootElement.width.baseVal.value");
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QString h = QString::fromAscii("document.rootElement.height.baseVal.value");
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double ww = webView.page()->mainFrame()->evaluateJavaScript(w).toDouble();
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double hh = webView.page()->mainFrame()->evaluateJavaScript(h).toDouble();
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defaultSize = QSize(ww, hh);
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loaded = true;
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res = true;
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}
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#endif
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return loaded;
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}
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QSvgIOHandler::QSvgIOHandler()
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: d(new QSvgIOHandlerPrivate(this))
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{
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}
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QSvgIOHandler::~QSvgIOHandler()
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{
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delete d;
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}
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bool QSvgIOHandler::canRead() const
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{
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if (!device())
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return false;
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if (d->loaded && !d->readDone)
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return true; // Will happen if we have been asked for the size
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QByteArray buf = device()->peek(8);
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if (buf.startsWith("\x1f\x8b")) {
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setFormat("svgz");
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return true;
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} else if (buf.contains("<?xml") || buf.contains("<svg")) {
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setFormat("svg");
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return true;
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}
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return false;
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}
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QByteArray QSvgIOHandler::name() const
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{
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return "svg";
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}
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bool QSvgIOHandler::read(QImage *image)
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{
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if (!d->readDone && d->load(device())) {
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bool xform = (d->clipRect.isValid() || d->scaledSize.isValid() || d->scaledClipRect.isValid());
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QSize finalSize = d->defaultSize;
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QRectF bounds;
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if (xform && !d->defaultSize.isEmpty()) {
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bounds = QRectF(QPointF(0,0), QSizeF(d->defaultSize));
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QPoint tr1, tr2;
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QSizeF sc(1, 1);
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if (d->clipRect.isValid()) {
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tr1 = -d->clipRect.topLeft();
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finalSize = d->clipRect.size();
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}
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if (d->scaledSize.isValid()) {
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sc = QSizeF(qreal(d->scaledSize.width()) / finalSize.width(),
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qreal(d->scaledSize.height()) / finalSize.height());
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finalSize = d->scaledSize;
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}
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if (d->scaledClipRect.isValid()) {
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tr2 = -d->scaledClipRect.topLeft();
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finalSize = d->scaledClipRect.size();
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}
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QTransform t;
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t.translate(tr2.x(), tr2.y());
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t.scale(sc.width(), sc.height());
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t.translate(tr1.x(), tr1.y());
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bounds = t.mapRect(bounds);
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}
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*image = QImage(finalSize, QImage::Format_ARGB32_Premultiplied);
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if (!finalSize.isEmpty()) {
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image->fill(d->backColor.rgba());
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QPainter p(image);
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#if 0
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d->r.render(&p, bounds);
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#else
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//qreal xs = size.isValid() ? size.width() / ww : 1.0;
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//qreal ys = size.isValid() ? size.height() / hh : 1.0;
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//p.scale(xs, ys);
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// the best quality
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p.setRenderHint(QPainter::Antialiasing);
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p.setRenderHint(QPainter::TextAntialiasing);
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p.setRenderHint(QPainter::SmoothPixmapTransform);
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p.setOpacity(0); // important to keep transparent background
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d->webView.page()->mainFrame()->render(&p);
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#endif
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p.end();
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}
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d->readDone = true;
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return true;
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}
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return false;
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}
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QVariant QSvgIOHandler::option(ImageOption option) const
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{
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switch(option) {
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case ImageFormat:
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return QImage::Format_ARGB32_Premultiplied;
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break;
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case Size:
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d->load(device());
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return d->defaultSize;
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break;
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case ClipRect:
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return d->clipRect;
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break;
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case ScaledSize:
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return d->scaledSize;
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break;
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case ScaledClipRect:
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return d->scaledClipRect;
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break;
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case BackgroundColor:
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return d->backColor;
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break;
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default:
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break;
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}
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return QVariant();
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}
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void QSvgIOHandler::setOption(ImageOption option, const QVariant & value)
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{
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switch(option) {
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case ClipRect:
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d->clipRect = value.toRect();
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break;
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case ScaledSize:
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d->scaledSize = value.toSize();
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break;
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case ScaledClipRect:
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d->scaledClipRect = value.toRect();
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break;
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case BackgroundColor:
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d->backColor = value.value<QColor>();
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break;
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default:
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break;
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}
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}
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bool QSvgIOHandler::supportsOption(ImageOption option) const
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{
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switch(option)
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{
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case ImageFormat:
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case Size:
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case ClipRect:
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case ScaledSize:
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case ScaledClipRect:
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case BackgroundColor:
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return true;
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default:
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break;
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}
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return false;
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}
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bool QSvgIOHandler::canRead(QIODevice *device)
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{
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QByteArray buf = device->peek(8);
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return buf.startsWith("\x1f\x8b") || buf.contains("<?xml") || buf.contains("<svg");
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}
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QT_END_NAMESPACE
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#endif // QT_NO_SVGRENDERER
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77
src/Tools/plugins/imageformats/svg/qsvgiohandler.h
Normal file
77
src/Tools/plugins/imageformats/svg/qsvgiohandler.h
Normal file
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@ -0,0 +1,77 @@
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/****************************************************************************
|
||||
**
|
||||
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
|
||||
** Contact: http://www.qt-project.org/legal
|
||||
**
|
||||
** This file is part of the plugins of the Qt Toolkit.
|
||||
**
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** Commercial License Usage
|
||||
** Licensees holding valid commercial Qt licenses may use this file in
|
||||
** accordance with the commercial license agreement provided with the
|
||||
** Software or, alternatively, in accordance with the terms contained in
|
||||
** a written agreement between you and Digia. For licensing terms and
|
||||
** conditions see http://qt.digia.com/licensing. For further information
|
||||
** use the contact form at http://qt.digia.com/contact-us.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 2.1 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 2.1 requirements
|
||||
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Digia gives you certain additional
|
||||
** rights. These rights are described in the Digia Qt LGPL Exception
|
||||
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU
|
||||
** General Public License version 3.0 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.GPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU General Public License version 3.0 requirements will be
|
||||
** met: http://www.gnu.org/copyleft/gpl.html.
|
||||
**
|
||||
**
|
||||
** $QT_END_LICENSE$
|
||||
**
|
||||
****************************************************************************/
|
||||
|
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#ifndef QSVGIOHANDLER_H
|
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#define QSVGIOHANDLER_H
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|
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#include <QtGui/qimageiohandler.h>
|
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|
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#ifndef QT_NO_SVGRENDERER
|
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|
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QT_BEGIN_NAMESPACE
|
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|
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class QImage;
|
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class QByteArray;
|
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class QIODevice;
|
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class QVariant;
|
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class QSvgIOHandlerPrivate;
|
||||
|
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class QSvgIOHandler : public QImageIOHandler
|
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{
|
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public:
|
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QSvgIOHandler();
|
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~QSvgIOHandler();
|
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virtual bool canRead() const;
|
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virtual QByteArray name() const;
|
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virtual bool read(QImage *image);
|
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static bool canRead(QIODevice *device);
|
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virtual QVariant option(ImageOption option) const;
|
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virtual void setOption(ImageOption option, const QVariant & value);
|
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virtual bool supportsOption(ImageOption option) const;
|
||||
|
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private:
|
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QSvgIOHandlerPrivate *d;
|
||||
};
|
||||
|
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QT_END_NAMESPACE
|
||||
|
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#endif // QT_NO_SVGRENDERER
|
||||
#endif // QSVGIOHANDLER_H
|
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6
src/Tools/plugins/imageformats/svg/svg.pro
Normal file
6
src/Tools/plugins/imageformats/svg/svg.pro
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
TARGET = freecad_svg
|
||||
|
||||
HEADERS += qsvgiohandler.h
|
||||
SOURCES += main.cpp \
|
||||
qsvgiohandler.cpp
|
||||
QT += xml webkit
|
||||
Loading…
Reference in New Issue
Block a user