/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbpixmapiconrenderer_p.h"

#include "hbmaskableiconimpl_p.h"

#include <QStyleOption>

#include <QApplication>

struct HbPixmapIconMaskedData {

    QPixmap    currentPixmap;

};

HbPixmapIconRenderer::HbPixmapIconRenderer(const QPixmap &pixmap, HbIconImpl *impl)

    : iconMode(QIcon::Normal),

      iconPropertiesApplied(false),

      pixmapData(pixmap),

      iconImpl(impl)

{

}

HbPixmapIconRenderer::~HbPixmapIconRenderer()

{

}

void HbPixmapIconRenderer::draw(QPainter *painter,

                                const QPointF &topLeft,

                                const QPainterPath &clipPath,

                                HbMaskableIconImpl *maskIconData)

{

    if (!iconPropertiesApplied) {

        applyIconProperties();

    }

    QPixmap pixmapToDraw = pixmapData;

    if (maskIconData) {

        pixmapToDraw = getMaskedPixmap(maskIconData);

        if (pixmapToDraw.isNull()) {

            pixmapToDraw = pixmapData;

        }

    }

    doDraw(painter, topLeft, pixmapToDraw, clipPath);

}

void HbPixmapIconRenderer::doDraw(QPainter *painter,

                                  const QPointF &topLeft,

                                  const QPixmap &finalPixmap,

                                  const QPainterPath &clipPath)

{

    if (!clipPath.isEmpty()) {

        QPainterPath oldPath;

        bool wasClipped = painter->hasClipping();

        if (!wasClipped) {

            painter->setClipping(true);

        }

        QRectF cliprect = clipPath.boundingRect();

        QPainterPath intersect(clipPath);

        oldPath = painter->clipPath();

        if (wasClipped) {

            QRectF oldrect = oldPath.boundingRect();

            intersect =  oldPath.intersected(clipPath);

            QRectF interrect = intersect.boundingRect();

        }

        painter->setClipPath(intersect, Qt::ReplaceClip);

        painter->drawPixmap(topLeft, finalPixmap);

        painter->setClipPath(oldPath);

        painter->setClipping(wasClipped);

    }  else {

        painter->drawPixmap(topLeft, finalPixmap);

    }

}

void HbPixmapIconRenderer::applyIconProperties()

{

    if ((iconColor.isValid()) && (iconMode != QIcon::Disabled)) {

        if (!pixmapData.isNull()) {

            QPixmap mask = pixmapData.alphaChannel();

            pixmapData.fill(iconColor);

            pixmapData.setAlphaChannel(mask);

        }

    }

    // Apply the mode

    if (iconMode != QIcon::Normal) {

        QStyleOption opt(0);

        opt.palette = QApplication::palette();

        pixmapData = QApplication::style()->generatedIconPixmap(iconMode, pixmapData, &opt);

    }

    iconPropertiesApplied = true;

}

QPixmap HbPixmapIconRenderer::getMaskedPixmap(HbMaskableIconImpl *maskIconData)

{

    QPixmap maskedPixmap;

    HbPixmapIconMaskedData *mi = (HbPixmapIconMaskedData *)maskIconData->implData();

    if (maskIconData->maskChanged()) {

        if (!mi) {

            mi = new HbPixmapIconMaskedData();

        }

        mi->currentPixmap = pixmapData;

        mi->currentPixmap.setMask(maskIconData->mask());

        maskIconData->setImplData(mi);

    }

    if (mi) {

        maskedPixmap = mi->currentPixmap;

    }

    return maskedPixmap;

}

void HbPixmapIconRenderer::destroyMaskedData(HbIconMaskedData *data)

{

    delete((HbPixmapIconMaskedData *)data);

}