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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtGui module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qpaintdevice.h" |
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43 #include "qpainter.h" |
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44 #include "qwidget.h" |
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45 #include "qbitmap.h" |
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46 #include "qapplication.h" |
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47 #include "qprinter.h" |
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48 #include <qdebug.h> |
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49 #include <private/qt_mac_p.h> |
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50 #include <private/qprintengine_mac_p.h> |
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51 #include <private/qpixmap_mac_p.h> |
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52 #include <private/qpixmap_raster_p.h> |
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53 |
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54 QT_BEGIN_NAMESPACE |
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55 |
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56 /***************************************************************************** |
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57 Internal variables and functions |
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58 *****************************************************************************/ |
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59 |
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60 /*! \internal */ |
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61 float qt_mac_defaultDpi_x() |
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62 { |
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63 // Mac OS X currently assumes things to be 72 dpi. |
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64 // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/) |
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65 // This may need to be re-worked as we go further in the resolution-independence stuff. |
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66 return 72; |
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67 } |
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68 |
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69 /*! \internal */ |
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70 float qt_mac_defaultDpi_y() |
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71 { |
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72 // Mac OS X currently assumes things to be 72 dpi. |
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73 // (see http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/) |
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74 // This may need to be re-worked as we go further in the resolution-independence stuff. |
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75 return 72; |
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76 } |
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77 |
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78 |
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79 /*! \internal |
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80 |
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81 Returns the QuickDraw CGrafPtr of the paint device. 0 is returned |
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82 if it can't be obtained. Do not hold the pointer around for long |
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83 as it can be relocated. |
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84 |
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85 \warning This function is only available on Mac OS X. |
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86 */ |
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87 |
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88 Q_GUI_EXPORT GrafPtr qt_mac_qd_context(const QPaintDevice *device) |
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89 { |
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90 if (device->devType() == QInternal::Pixmap) { |
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91 return static_cast<GrafPtr>(static_cast<const QPixmap *>(device)->macQDHandle()); |
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92 } else if(device->devType() == QInternal::Widget) { |
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93 return static_cast<GrafPtr>(static_cast<const QWidget *>(device)->macQDHandle()); |
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94 } else if(device->devType() == QInternal::Printer) { |
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95 QPaintEngine *engine = static_cast<const QPrinter *>(device)->paintEngine(); |
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96 return static_cast<GrafPtr>(static_cast<const QMacPrintEngine *>(engine)->handle()); |
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97 } |
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98 return 0; |
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99 } |
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100 |
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101 extern CGColorSpaceRef qt_mac_colorSpaceForDeviceType(const QPaintDevice *pdev); |
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102 |
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103 /*! \internal |
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104 |
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105 Returns the CoreGraphics CGContextRef of the paint device. 0 is |
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106 returned if it can't be obtained. It is the caller's responsiblity to |
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107 CGContextRelease the context when finished using it. |
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108 |
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109 \warning This function is only available on Mac OS X. |
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110 */ |
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111 |
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112 Q_GUI_EXPORT CGContextRef qt_mac_cg_context(const QPaintDevice *pdev) |
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113 { |
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114 if (pdev->devType() == QInternal::Pixmap) { |
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115 const QPixmap *pm = static_cast<const QPixmap*>(pdev); |
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116 CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev); |
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117 uint flags = kCGImageAlphaPremultipliedFirst; |
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118 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version |
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119 flags |= kCGBitmapByteOrder32Host; |
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120 #endif |
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121 CGContextRef ret = 0; |
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122 |
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123 // It would make sense to put this into a mac #ifdef'ed |
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124 // virtual function in the QPixmapData at some point |
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125 if (pm->data->classId() == QPixmapData::MacClass) { |
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126 const QMacPixmapData *pmData = static_cast<const QMacPixmapData*>(pm->data.data()); |
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127 ret = CGBitmapContextCreate(pmData->pixels, pmData->w, pmData->h, |
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128 8, pmData->bytesPerRow, colorspace, |
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129 flags); |
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130 if(!ret) |
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131 qWarning("QPaintDevice: Unable to create context for pixmap (%d/%d/%d)", |
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132 pmData->w, pmData->h, (pmData->bytesPerRow * pmData->h)); |
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133 } else if (pm->data->classId() == QPixmapData::RasterClass) { |
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134 QImage *image = pm->data->buffer(); |
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135 ret = CGBitmapContextCreate(image->bits(), image->width(), image->height(), |
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136 8, image->bytesPerLine(), colorspace, flags); |
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137 } |
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138 |
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139 CGContextTranslateCTM(ret, 0, pm->height()); |
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140 CGContextScaleCTM(ret, 1, -1); |
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141 return ret; |
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142 } else if (pdev->devType() == QInternal::Widget) { |
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143 CGContextRef ret = static_cast<CGContextRef>(static_cast<const QWidget *>(pdev)->macCGHandle()); |
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144 CGContextRetain(ret); |
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145 return ret; |
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146 } else if (pdev->devType() == QInternal::MacQuartz) { |
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147 return static_cast<const QMacQuartzPaintDevice *>(pdev)->cgContext(); |
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148 } |
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149 return 0; |
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150 } |
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151 |
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152 QT_END_NAMESPACE |