/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qpaintdevice.h"+
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#include "qpainter.h"+
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#include "qwidget.h"+
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#include "qbitmap.h"+
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#include "qapplication.h"+
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#include "qprinter.h"+
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#include <qdebug.h>+
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#include <private/qt_mac_p.h>+
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#include <private/qprintengine_mac_p.h>+
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#include <private/qpixmap_mac_p.h>+
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#include <private/qpixmap_raster_p.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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/*****************************************************************************+
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  Internal variables and functions+
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 *****************************************************************************/+
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+
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/*! \internal */+
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float qt_mac_defaultDpi_x()+
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{+
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    // Mac OS X currently assumes things to be 72 dpi.+
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    // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)+
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    // This may need to be re-worked as we go further in the resolution-independence stuff.+
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    return 72;+
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}+
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+
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/*! \internal */+
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float qt_mac_defaultDpi_y()+
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{+
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    // Mac OS X currently assumes things to be 72 dpi.+
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    // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)+
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    // This may need to be re-worked as we go further in the resolution-independence stuff.+
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    return 72;+
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}+
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+
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+
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/*! \internal+
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+
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    Returns the QuickDraw CGrafPtr of the paint device. 0 is returned+
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    if it can't be obtained. Do not hold the pointer around for long+
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    as it can be relocated.+
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+
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    \warning This function is only available on Mac OS X.+
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*/+
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+
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Q_GUI_EXPORT GrafPtr qt_mac_qd_context(const QPaintDevice *device)+
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{+
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    if (device->devType() == QInternal::Pixmap) {+
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        return static_cast<GrafPtr>(static_cast<const QPixmap *>(device)->macQDHandle());+
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    } else if(device->devType() == QInternal::Widget) {+
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        return static_cast<GrafPtr>(static_cast<const QWidget *>(device)->macQDHandle());+
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    } else if(device->devType() == QInternal::Printer) {+
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        QPaintEngine *engine = static_cast<const QPrinter *>(device)->paintEngine();+
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        return static_cast<GrafPtr>(static_cast<const QMacPrintEngine *>(engine)->handle());+
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    }+
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    return 0;+
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}+
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+
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extern CGColorSpaceRef qt_mac_colorSpaceForDeviceType(const QPaintDevice *pdev);+
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+
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/*! \internal+
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+
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    Returns the CoreGraphics CGContextRef of the paint device. 0 is+
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    returned if it can't be obtained. It is the caller's responsiblity to+
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    CGContextRelease the context when finished using it.+
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+
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    \warning This function is only available on Mac OS X.+
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*/+
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+
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Q_GUI_EXPORT CGContextRef qt_mac_cg_context(const QPaintDevice *pdev)+
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{+
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    if (pdev->devType() == QInternal::Pixmap) {+
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        const QPixmap *pm = static_cast<const QPixmap*>(pdev);+
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        CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev);+
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        uint flags = kCGImageAlphaPremultipliedFirst;+
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#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version+
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        flags |= kCGBitmapByteOrder32Host;+
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#endif+
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        CGContextRef ret = 0;+
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+
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        // It would make sense to put this into a mac #ifdef'ed+
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        // virtual function in the QPixmapData at some point+
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        if (pm->data->classId() == QPixmapData::MacClass) {+
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            const QMacPixmapData *pmData = static_cast<const QMacPixmapData*>(pm->data.data());+
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            ret = CGBitmapContextCreate(pmData->pixels, pmData->w, pmData->h,+
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                                                     8, pmData->bytesPerRow, colorspace,+
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                                                     flags);+
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            if(!ret)+
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                qWarning("QPaintDevice: Unable to create context for pixmap (%d/%d/%d)",+
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                         pmData->w, pmData->h, (pmData->bytesPerRow * pmData->h));+
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        } else if (pm->data->classId() == QPixmapData::RasterClass) {+
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            QImage *image = pm->data->buffer();+
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            ret = CGBitmapContextCreate(image->bits(), image->width(), image->height(),+
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                                        8, image->bytesPerLine(), colorspace, flags);+
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        }+
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+
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        CGContextTranslateCTM(ret, 0, pm->height());+
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        CGContextScaleCTM(ret, 1, -1);+
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        return ret;+
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    } else if (pdev->devType() == QInternal::Widget) {+
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        CGContextRef ret = static_cast<CGContextRef>(static_cast<const QWidget *>(pdev)->macCGHandle());+
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        CGContextRetain(ret);+
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        return ret;+
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    } else if (pdev->devType() == QInternal::MacQuartz) {+
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        return static_cast<const QMacQuartzPaintDevice *>(pdev)->cgContext();+
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    }+
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    return 0;+
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}+
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+
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QT_END_NAMESPACE+
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