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/*
* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2008 Holger Hans Peter Freyther
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ImageBuffer.h"
#include "CString.h"
#include "GraphicsContext.h"
#include "ImageData.h"
#include "MIMETypeRegistry.h"
#include "NotImplemented.h"
#include "StillImageQt.h"
#include <QBuffer>
#include <QImageWriter>
#include <QPainter>
#include <QPixmap>
namespace WebCore {
ImageBufferData::ImageBufferData(const IntSize& size)
: m_pixmap(size)
{
m_pixmap.fill(QColor(Qt::transparent));
m_painter.set(new QPainter(&m_pixmap));
}
ImageBuffer::ImageBuffer(const IntSize& size, bool grayScale, bool& success)
: m_data(size)
, m_size(size)
{
m_context.set(new GraphicsContext(m_data.m_painter.get()));
success = true;
}
ImageBuffer::~ImageBuffer()
{
}
GraphicsContext* ImageBuffer::context() const
{
ASSERT(m_data.m_painter->isActive());
return m_context.get();
}
Image* ImageBuffer::image() const
{
if (!m_image) {
// It's assumed that if image() is called, the actual rendering to the
// GraphicsContext must be done.
ASSERT(context());
m_image = StillImage::create(m_data.m_pixmap);
}
return m_image.get();
}
PassRefPtr<ImageData> ImageBuffer::getImageData(const IntRect&) const
{
notImplemented();
return 0;
}
void ImageBuffer::putImageData(ImageData*, const IntRect&, const IntPoint&)
{
notImplemented();
}
// We get a mimeType here but QImageWriter does not support mimetypes but
// only formats (png, gif, jpeg..., xpm). So assume we get image/ as image
// mimetypes and then remove the image/ to get the Qt format.
String ImageBuffer::toDataURL(const String& mimeType) const
{
ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
if (!mimeType.startsWith("image/"))
return "data:,";
// prepare our target
QByteArray data;
QBuffer buffer(&data);
buffer.open(QBuffer::WriteOnly);
if (!m_data.m_pixmap.save(&buffer, mimeType.substring(sizeof "image").utf8().data()))
return "data:,";
buffer.close();
return String::format("data:%s;base64,%s", mimeType.utf8().data(), data.toBase64().data());
}
}
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