/**************************************************************************** ** ** 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 either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** 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 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at http://www.qtsoftware.com/contact. ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qpaintdevice.h" #include "qpainter.h" #include "qwidget.h" #include "qbitmap.h" #include "qapplication.h" #include "qprinter.h" #include #include #include #include #include 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(static_cast(device)->macQDHandle()); } else if(device->devType() == QInternal::Widget) { return static_cast(static_cast(device)->macQDHandle()); } else if(device->devType() == QInternal::Printer) { QPaintEngine *engine = static_cast(device)->paintEngine(); return static_cast(static_cast(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(pdev); CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev); uint flags = kCGImageAlphaPremultipliedFirst; #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version flags |= kCGBitmapByteOrder32Host; #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(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(static_cast(pdev)->macCGHandle()); CGContextRetain(ret); return ret; } else if (pdev->devType() == QInternal::MacQuartz) { return static_cast(pdev)->cgContext(); } return 0; } QT_END_NAMESPACE