blob: aaf9871c71329d5eb57d9e9a7deca490f2c98c1f (
plain)
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
|
/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#include "qpaintdevice.h"
QT_BEGIN_NAMESPACE
QPaintDevice::QPaintDevice() noexcept
{
painters = 0;
}
QPaintDevice::~QPaintDevice()
{
if (paintingActive())
qWarning("QPaintDevice: Cannot destroy paint device that is being "
"painted");
}
/*!
\internal
*/
void QPaintDevice::initPainter(QPainter *) const
{
}
/*!
\internal
*/
QPaintDevice *QPaintDevice::redirected(QPoint *) const
{
return nullptr;
}
/*!
\internal
*/
QPainter *QPaintDevice::sharedPainter() const
{
return nullptr;
}
Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, QPaintDevice::PaintDeviceMetric metric)
{
return device->metric(metric);
}
int QPaintDevice::metric(PaintDeviceMetric m) const
{
// Fallback: A subclass has not implemented PdmDevicePixelRatioScaled but might
// have implemented PdmDevicePixelRatio.
if (m == PdmDevicePixelRatioScaled)
return this->metric(PdmDevicePixelRatio) * devicePixelRatioFScale();
qWarning("QPaintDevice::metrics: Device has no metric information");
if (m == PdmDpiX) {
return 72;
} else if (m == PdmDpiY) {
return 72;
} else if (m == PdmNumColors) {
// FIXME: does this need to be a real value?
return 256;
} else if (m == PdmDevicePixelRatio) {
return 1;
} else {
qDebug("Unrecognised metric %d!",m);
return 0;
}
}
QT_END_NAMESPACE
|