diff options
Diffstat (limited to 'src/widgets/platforms/mac/qpaintdevice_mac.cpp')
| -rw-r--r-- | src/widgets/platforms/mac/qpaintdevice_mac.cpp | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/src/widgets/platforms/mac/qpaintdevice_mac.cpp b/src/widgets/platforms/mac/qpaintdevice_mac.cpp new file mode 100644 index 0000000000..245408a0b0 --- /dev/null +++ b/src/widgets/platforms/mac/qpaintdevice_mac.cpp @@ -0,0 +1,152 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 "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 + *****************************************************************************/ + +/*! \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); + 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<const QMacPixmapData*>(pm->data.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 |