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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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

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     7 ** This file is part of the QtGui module of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    40 ****************************************************************************/

    41 

    42 #include <qpixmap.h>

    43 #include <qapplication.h>

    44 #include <qwidget.h>

    45 #include <qdesktopwidget.h>

    46 #include <qscreen_qws.h>

    47 #include <qwsdisplay_qws.h>

    48 #include <private/qdrawhelper_p.h>

    49 #include <private/qpixmap_raster_p.h>

    50 

    51 

    52 QT_BEGIN_NAMESPACE

    53 

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

    55 {

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

    57     if (!widget)

    58         return QPixmap();

    59 

    60     QRect grabRect = widget->frameGeometry();

    61     if (!widget->isWindow())

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

    63     if (w < 0)

    64         w = widget->width() - x;

    65     if (h < 0)

    66         h = widget->height() - y;

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

    68 

    69     QScreen *screen = qt_screen;

    70     QDesktopWidget *desktop = QApplication::desktop();

    71     if (!desktop)

    72         return QPixmap();

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

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

    75         if (screenNo != -1)

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

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

    78     }

    79 

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

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

    82         return QPixmap();

    83     }

    84 

    85     if (screen->isTransformed()) {

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

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

    88     }

    89 

    90     QWSDisplay::grab(false);

    91     QPixmap pixmap;

    92     QImage img(screen->base(),

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

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

    95     img = img.copy(grabRect);

    96     QWSDisplay::ungrab();

    97 

    98     if (screen->isTransformed()) {

    99         QMatrix matrix;

   100         switch (screen->transformOrientation()) {

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

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

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

   104         default: break;

   105         }

   106         img = img.transformed(matrix);

   107     }

   108 

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

   110         img = img.rgbSwapped();

   111 

   112     return QPixmap::fromImage(img);

   113 }

   114 

   115 QRgb* QPixmap::clut() const

   116 {

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

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

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

   120     }

   121 

   122     return 0;

   123 }

   124 

   125 int QPixmap::numCols() const

   126 {

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

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

   129         return d->image.numColors();

   130     }

   131 

   132     return 0;

   133 }

   134 

   135 const uchar* QPixmap::qwsBits() const

   136 {

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

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

   139         return d->image.bits();

   140     }

   141 

   142     return 0;

   143 }

   144 

   145 int QPixmap::qwsBytesPerLine() const

   146 {

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

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

   149         return d->image.bytesPerLine();

   150     }

   151 

   152     return 0;

   153 }

   154 

   155 QT_END_NAMESPACE