stillimageqt.cpp

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· C++ 代码 · 共 66 行

/*
 * Copyright (C) 2008 Holger Hans Peter Freyther
 *
 * All rights reserved.
 *
 * 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 "StillImageQt.h"

#include "GraphicsContext.h"
#include "IntSize.h"

#include <QPainter>

namespace WebCore {

StillImage::StillImage(const QPixmap& pixmap)
    : m_pixmap(pixmap)
{}

IntSize StillImage::size() const
{
    return IntSize(m_pixmap.width(), m_pixmap.height());
}

NativeImagePtr StillImage::nativeImageForCurrentFrame()
{
    return const_cast<NativeImagePtr>(&m_pixmap);
}

void StillImage::draw(GraphicsContext* ctxt, const FloatRect& dst,
                      const FloatRect& src, CompositeOperator op)
{
    if (m_pixmap.isNull())
        return;

    ctxt->save();
    ctxt->setCompositeOperation(op);
    QPainter* painter(ctxt->platformContext());
    painter->drawPixmap(dst, m_pixmap, src);
    ctxt->restore();
}

}