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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 "qpaintdevice.h"
#include "qpainter.h"
#include "qwidget.h"
#include "qbitmap.h"
#include "qapplication.h"
#include "qprinter.h"
#include <qdebug.h>
#include <private/qt_mac_p.h>
#include <private/qprintengine_mac_p.h>
#include <private/qpixmap_mac_p.h>
#include <private/qpixmap_raster_p.h>
QT_BEGIN_NAMESPACE
/*****************************************************************************
Internal variables and functions
*****************************************************************************/
/*****************************************************************************
External functions
*****************************************************************************/
extern void qt_painter_removePaintDevice(QPaintDevice *); //qpainter.cpp
/*****************************************************************************
QPaintDevice member functions
*****************************************************************************/
QPaintDevice::QPaintDevice()
{
painters = 0;
}
QPaintDevice::~QPaintDevice()
{
if(paintingActive())
qWarning("QPaintDevice: Cannot destroy paint device that is being "
"painted, be sure to QPainter::end() painters");
qt_painter_removePaintDevice(this);
}
int QPaintDevice::metric(PaintDeviceMetric) const
{
return 0;
}
/*! \internal */
float qt_mac_defaultDpi_x()
{
// Mac OS X currently assumes things to be 72 dpi.
// (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)
// This may need to be re-worked as we go further in the resolution-independence stuff.
return 72;
}
/*! \internal */
float qt_mac_defaultDpi_y()
{
// Mac OS X currently assumes things to be 72 dpi.
// (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/)
// This may need to be re-worked as we go further in the resolution-independence stuff.
return 72;
}
/*! \internal
Returns the QuickDraw CGrafPtr of the paint device. 0 is returned
if it can't be obtained. Do not hold the pointer around for long
as it can be relocated.
\warning This function is only available on Mac OS X.
*/
Q_GUI_EXPORT GrafPtr qt_mac_qd_context(const QPaintDevice *device)
{
if (device->devType() == QInternal::Pixmap) {
return static_cast<GrafPtr>(static_cast<const QPixmap *>(device)->macQDHandle());
} else if(device->devType() == QInternal::Widget) {
return static_cast<GrafPtr>(static_cast<const QWidget *>(device)->macQDHandle());
} else if(device->devType() == QInternal::Printer) {
QPaintEngine *engine = static_cast<const QPrinter *>(device)->paintEngine();
return static_cast<GrafPtr>(static_cast<const QMacPrintEngine *>(engine)->handle());
}
return 0;
}
extern CGColorSpaceRef qt_mac_colorSpaceForDeviceType(const QPaintDevice *pdev);
/*! \internal
Returns the CoreGraphics CGContextRef of the paint device. 0 is
returned if it can't be obtained. It is the caller's responsiblity to
CGContextRelease the context when finished using it.
\warning This function is only available on Mac OS X.
*/
Q_GUI_EXPORT CGContextRef qt_mac_cg_context(const QPaintDevice *pdev)
{
if (pdev->devType() == QInternal::Pixmap) {
const QPixmap *pm = static_cast<const QPixmap*>(pdev);
CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev);
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
uint flags = kCGImageAlphaPremultipliedFirst;
#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
flags |= kCGBitmapByteOrder32Host;
#endif
#else
CGImageAlphaInfo flags = kCGImageAlphaPremultipliedFirst;
#endif
CGContextRef ret = 0;
// It would make sense to put this into a mac #ifdef'ed
// virtual function in the QPixmapData at some point
if (pm->data->classId() == QPixmapData::MacClass) {
const QMacPixmapData *pmData = static_cast<const QMacPixmapData*>(pm->data);
ret = CGBitmapContextCreate(pmData->pixels, pmData->w, pmData->h,
8, pmData->bytesPerRow, colorspace,
flags);
if(!ret)
qWarning("QPaintDevice: Unable to create context for pixmap (%d/%d/%d)",
pmData->w, pmData->h, (pmData->bytesPerRow * pmData->h));
} else if (pm->data->classId() == QPixmapData::RasterClass) {
QImage *image = pm->data->buffer();
ret = CGBitmapContextCreate(image->bits(), image->width(), image->height(),
8, image->bytesPerLine(), colorspace, flags);
}
CGContextTranslateCTM(ret, 0, pm->height());
CGContextScaleCTM(ret, 1, -1);
return ret;
} else if (pdev->devType() == QInternal::Widget) {
CGContextRef ret = static_cast<CGContextRef>(static_cast<const QWidget *>(pdev)->macCGHandle());
CGContextRetain(ret);
return ret;
} else if (pdev->devType() == QInternal::MacQuartz) {
return static_cast<const QMacQuartzPaintDevice *>(pdev)->cgContext();
}
return 0;
}
QT_END_NAMESPACE
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