1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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
|
