diff options
Diffstat (limited to 'src/plugins/imageformats/svg/qsvgiohandler.cpp')
| -rw-r--r-- | src/plugins/imageformats/svg/qsvgiohandler.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/plugins/imageformats/svg/qsvgiohandler.cpp b/src/plugins/imageformats/svg/qsvgiohandler.cpp new file mode 100644 index 0000000..41b247b --- /dev/null +++ b/src/plugins/imageformats/svg/qsvgiohandler.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsvgiohandler.h" + +#ifndef QT_NO_SVGRENDERER + +#include "qsvgrenderer.h" +#include "qimage.h" +#include "qpixmap.h" +#include "qpainter.h" +#include "qvariant.h" +#include "qdebug.h" + +QT_BEGIN_NAMESPACE + +class QSvgIOHandlerPrivate +{ +public: + QSvgIOHandlerPrivate() + : r(new QSvgRenderer()), loaded(false) + {} + ~QSvgIOHandlerPrivate() + { + delete r; + } + + bool load(QIODevice *device); + + QSvgRenderer *r; + QSize defaultSize; + QSize currentSize; + bool loaded; +}; + +bool QSvgIOHandlerPrivate::load(QIODevice *device) +{ + if (loaded) + return true; + + if (r->load(device->readAll())) { + defaultSize = QSize(r->viewBox().width(), r->viewBox().height()); + if (currentSize.isEmpty()) + currentSize = defaultSize; + } + loaded = r->isValid(); + + return loaded; +} + +QSvgIOHandler::QSvgIOHandler() + : d(new QSvgIOHandlerPrivate()) +{ + +} + + +QSvgIOHandler::~QSvgIOHandler() +{ + delete d; +} + + +bool QSvgIOHandler::canRead() const +{ + QByteArray contents = device()->peek(80); + + return contents.contains("<svg"); +} + + +QByteArray QSvgIOHandler::name() const +{ + return "svg"; +} + + +bool QSvgIOHandler::read(QImage *image) +{ + if (d->load(device())) { + *image = QImage(d->currentSize, QImage::Format_ARGB32_Premultiplied); + if (!d->currentSize.isEmpty()) { + image->fill(0x00000000); + QPainter p(image); + d->r->render(&p); + p.end(); + } + return true; + } + + return false; +} + + +QVariant QSvgIOHandler::option(ImageOption option) const +{ + switch(option) { + case ImageFormat: + return QImage::Format_ARGB32_Premultiplied; + break; + case Size: + d->load(device()); + return d->defaultSize; + break; + case ScaledSize: + return d->currentSize; + break; + default: + break; + } + return QVariant(); +} + + +void QSvgIOHandler::setOption(ImageOption option, const QVariant & value) +{ + switch(option) { + case Size: + d->defaultSize = value.toSize(); + d->currentSize = value.toSize(); + break; + case ScaledSize: + d->currentSize = value.toSize(); + break; + default: + break; + } +} + + +bool QSvgIOHandler::supportsOption(ImageOption option) const +{ + switch(option) + { + case ImageFormat: + case Size: + case ScaledSize: + return true; + default: + break; + } + return false; +} + +bool QSvgIOHandler::canRead(QIODevice *device) +{ + QByteArray contents = device->peek(80); + return contents.contains("<svg"); +} + +QT_END_NAMESPACE + +#endif // QT_NO_SVGRENDERER |