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

**

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

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui module 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 Technology Preview License Agreement accompanying

** this package.

**

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

**

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

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

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

#include <qpixmap.h>

#include <qapplication.h>

#include <qwidget.h>

#include <qdesktopwidget.h>

#include <qscreen_qws.h>

#include <qwsdisplay_qws.h>

#include <private/qdrawhelper_p.h>

#include <private/qpixmap_raster_p.h>

QT_BEGIN_NAMESPACE

QPixmap QPixmap::grabWindow(WId window, int x, int y, int w, int h)

{

    QWidget *widget = QWidget::find(window);

    if (!widget)

        return QPixmap();

    QRect grabRect = widget->frameGeometry();

    if (!widget->isWindow())

        grabRect.translate(widget->parentWidget()->mapToGlobal(QPoint()));

    if (w < 0)

        w = widget->width() - x;

    if (h < 0)

        h = widget->height() - y;

    grabRect &= QRect(x, y, w, h).translated(widget->mapToGlobal(QPoint()));

    QScreen *screen = qt_screen;

    QDesktopWidget *desktop = QApplication::desktop();

    if (!desktop)

        return QPixmap();

    if (desktop->numScreens() > 1) {

        const int screenNo = desktop->screenNumber(widget);

        if (screenNo != -1)

            screen = qt_screen->subScreens().at(screenNo);

        grabRect = grabRect.translated(-screen->region().boundingRect().topLeft());

    }

    if (screen->pixelFormat() == QImage::Format_Invalid) {

        qWarning("QPixmap::grabWindow(): Unable to copy pixels from framebuffer");

        return QPixmap();

    }

    if (screen->isTransformed()) {

        const QSize screenSize(screen->width(), screen->height());

        grabRect = screen->mapToDevice(grabRect, screenSize);

    }

    QWSDisplay::grab(false);

    QPixmap pixmap;

    QImage img(screen->base(),

               screen->deviceWidth(), screen->deviceHeight(),

               screen->linestep(), screen->pixelFormat());

    img = img.copy(grabRect);

    QWSDisplay::ungrab();

    if (screen->isTransformed()) {

        QMatrix matrix;

        switch (screen->transformOrientation()) {

        case 1: matrix.rotate(90); break;

        case 2: matrix.rotate(180); break;

        case 3: matrix.rotate(270); break;

        default: break;

        }

        img = img.transformed(matrix);

    }

    if (screen->pixelType() == QScreen::BGRPixel)

        img = img.rgbSwapped();

    return QPixmap::fromImage(img);

}

QRgb* QPixmap::clut() const

{

    if (data && data->classId() == QPixmapData::RasterClass) {

        const QRasterPixmapData *d = static_cast<const QRasterPixmapData*>(data.data());

        return d->image.colorTable().data();

    }

    return 0;

}

int QPixmap::numCols() const

{

    return colorCount();

}

int QPixmap::colorCount() const

{

    if (data && data->classId() == QPixmapData::RasterClass) {

        const QRasterPixmapData *d = static_cast<const QRasterPixmapData*>(data.data());

        return d->image.colorCount();

    }

    return 0;

}

const uchar* QPixmap::qwsBits() const

{

    if (data && data->classId() == QPixmapData::RasterClass) {

        const QRasterPixmapData *d = static_cast<const QRasterPixmapData*>(data.data());

        return d->image.bits();

    }

    return 0;

}

int QPixmap::qwsBytesPerLine() const

{

    if (data && data->classId() == QPixmapData::RasterClass) {

        const QRasterPixmapData *d = static_cast<const QRasterPixmapData*>(data.data());

        return d->image.bytesPerLine();

    }

    return 0;

}

QT_END_NAMESPACE