summaryrefslogtreecommitdiffstats
path: root/src/gui/painting/qpaintdevice.cpp
blob: a4daa9841a05d39bd207b188e4c5a3e944ab7441 (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
/****************************************************************************
**
** Copyright (C) 2014 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qpaintdevice.h"

QT_BEGIN_NAMESPACE

QPaintDevice::QPaintDevice()
{
    reserved = 0;
    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 0;
}

/*!
    \internal
*/
QPainter *QPaintDevice::sharedPainter() const
{
    return 0;
}

Q_GUI_EXPORT int qt_paint_device_metric(const QPaintDevice *device, QPaintDevice::PaintDeviceMetric metric)
{
    return device->metric(metric);
}

int QPaintDevice::metric(PaintDeviceMetric m) const
{
    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