/*

 * Copyright (C) 2006 Dirk Mueller <mueller@kde.org>

 * Copyright (C) 2006 Zack Rusin <zack@kde.org>

 * Copyright (C) 2006 Simon Hausmann <hausmann@kde.org>

 *

 * 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 "Image.h"

#include "BitmapImage.h"

#include "FloatRect.h"

#include "PlatformString.h"

#include "GraphicsContext.h"

#include "AffineTransform.h"

#include "NotImplemented.h"

#include <QPixmap>

#include <QPainter>

#include <QImage>

#include <QImageReader>

#if QT_VERSION >= 0x040300

#include <QTransform>

#endif

#include <QDebug>

#include <math.h>

// This function loads resources into WebKit

QPixmap loadResourcePixmap(const char*);

namespace WebCore {

void FrameData::clear()

{

    if (m_frame) {

        m_frame = 0;

        m_duration = 0.0f;

        m_hasAlpha = true;

    }

}

// ================================================

// Image Class

// ================================================

Image* Image::loadPlatformResource(const char* name)

{

    BitmapImage* img = new BitmapImage(loadResourcePixmap(name));

    return img;

}

void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform,

                        const FloatPoint& phase, CompositeOperator op, const FloatRect& destRect)

{

    notImplemented();

}

BitmapImage::BitmapImage(const QPixmap &pixmap, ImageObserver *observer)

    : Image(observer)

    , m_currentFrame(0)

    , m_frames(0)

    , m_frameTimer(0)

    , m_repetitionCount(0)

    , m_repetitionsComplete(0)

    , m_isSolidColor(false)

    , m_animatingImageType(true)

    , m_animationFinished(false)

    , m_allDataReceived(false)

    , m_haveSize(false)

    , m_sizeAvailable(false)

    , m_decodedSize(0)

{

    m_pixmap = new QPixmap(pixmap);

}

void BitmapImage::initPlatformData()

{

    m_pixmap = 0;

}

void BitmapImage::invalidatePlatformData()

{

    delete m_pixmap;

    m_pixmap = 0;

}

// Drawing Routines

void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dst,

                       const FloatRect& src, CompositeOperator op)

{

    QPixmap* image = nativeImageForCurrentFrame();

    if (!image)

        return;

    if (mayFillWithSolidColor()) {

        fillWithSolidColor(ctxt, dst, solidColor(), op);

        return;

    }

    IntSize selfSize = size();

    ctxt->save();

    // Set the compositing operation.

    ctxt->setCompositeOperation(op);

    QPainter* painter(ctxt->platformContext());

    // Test using example site at

    // http://www.meyerweb.com/eric/css/edge/complexspiral/demo.html    

    painter->drawPixmap(dst, *image, src);

    ctxt->restore();

    startAnimation();

}

void BitmapImage::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform,

                              const FloatPoint& phase, CompositeOperator op, const FloatRect& destRect)

{

    QPixmap* framePixmap = nativeImageForCurrentFrame();

    if (!framePixmap) // If it's too early we won't have an image yet.

        return;

    QPixmap pixmap = *framePixmap;

    QRect tr = QRectF(tileRect).toRect();

    if (tr.x() || tr.y() || tr.width() != pixmap.width() || tr.height() != pixmap.height()) {

        pixmap = pixmap.copy(tr);

    }

    if (patternTransform.isIdentity()) {

        ctxt->save();

        ctxt->setCompositeOperation(op);

        QPainter* p = ctxt->platformContext();

        p->setBrushOrigin(phase);

        p->drawTiledPixmap(destRect, pixmap);

        ctxt->restore();

    } else {

        QBrush b(pixmap);

        b.setMatrix(patternTransform);

        ctxt->save();

        ctxt->setCompositeOperation(op);

        QPainter* p = ctxt->platformContext();

        p->setBrushOrigin(phase);

        p->fillRect(destRect, b);

        ctxt->restore();

    }

}

void BitmapImage::checkForSolidColor()

{

    // FIXME: It's easy to implement this optimization. Just need to check the RGBA32 buffer to see if it is 1x1.

    m_isSolidColor = false;

}

QPixmap* BitmapImage::getPixmap() const

{

    if (!m_pixmap)

      return const_cast<BitmapImage*>(this)->frameAtIndex(0);

    else

      return m_pixmap;

}

}

// vim: ts=4 sw=4 et