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
|
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins 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 "qcocoabackingstore.h"
#include <QtGui/QPainter>
#include "qcocoahelpers.h"
QT_BEGIN_NAMESPACE
QCocoaBackingStore::QCocoaBackingStore(QWindow *window)
: QPlatformBackingStore(window)
, m_cgImage(0)
{
}
QCocoaBackingStore::~QCocoaBackingStore()
{
CGImageRelease(m_cgImage);
m_cgImage = 0;
}
QPaintDevice *QCocoaBackingStore::paintDevice()
{
if (m_qImage.size() / m_qImage.devicePixelRatio() != m_requestedSize) {
CGImageRelease(m_cgImage);
m_cgImage = 0;
int scaleFactor = 1;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_7
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_7) {
QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(window()->handle());
if (cocoaWindow && cocoaWindow->m_contentView) {
scaleFactor = int([[cocoaWindow->m_contentView window] backingScaleFactor]);
}
}
#endif
m_qImage = QImage(m_requestedSize * scaleFactor, QImage::Format_ARGB32_Premultiplied);
m_qImage.setDevicePixelRatio(scaleFactor);
}
return &m_qImage;
}
void QCocoaBackingStore::flush(QWindow *win, const QRegion ®ion, const QPoint &offset)
{
// A flush means that qImage has changed. Since CGImages are seen as
// immutable, CoreImage fails to pick up this change for m_cgImage
// (since it usually cached), so we must recreate it. We await doing this
// until one of the views needs it, since, together with calling
// "setNeedsDisplayInRect" instead of "displayRect" we will, in most
// cases, get away with doing this once for every repaint. Also note that
// m_cgImage is only a reference to the data inside m_qImage, it is not a copy.
CGImageRelease(m_cgImage);
m_cgImage = 0;
if (QCocoaWindow *cocoaWindow = static_cast<QCocoaWindow *>(win->handle()))
[cocoaWindow->m_contentView flushBackingStore:this region:region offset:offset];
}
void QCocoaBackingStore::resize(const QSize &size, const QRegion &)
{
m_requestedSize = size;
}
bool QCocoaBackingStore::scroll(const QRegion &area, int dx, int dy)
{
extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset);
const qreal devicePixelRatio = m_qImage.devicePixelRatio();
QPoint qpoint(dx * devicePixelRatio, dy * devicePixelRatio);
const QVector<QRect> qrects = area.rects();
for (int i = 0; i < qrects.count(); ++i) {
const QRect &qrect = QRect(qrects.at(i).topLeft() * devicePixelRatio, qrects.at(i).size() * devicePixelRatio);
qt_scrollRectInImage(m_qImage, qrect, qpoint);
}
return true;
}
CGImageRef QCocoaBackingStore::getBackingStoreCGImage()
{
if (!m_cgImage)
m_cgImage = qt_mac_toCGImage(m_qImage, false, 0);
// Warning: do not retain/release/cache the returned image from
// outside the backingstore since it shares data with a QImage and
// needs special memory considerations.
return m_cgImage;
}
qreal QCocoaBackingStore::getBackingStoreDevicePixelRatio()
{
return m_qImage.devicePixelRatio();
}
QT_END_NAMESPACE
|
