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
|
/****************************************************************************
**
** Copyright (C) 2013 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 "qatomic.h"
#include "qbitmap.h"
#include "qbuffer.h"
#include "qimage.h"
#include "qpolygon.h"
#include "qregion.h"
#include "qt_windows.h"
#include "qpainterpath.h"
QT_BEGIN_NAMESPACE
QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0 };
HRGN qt_tryCreateRegion(QRegion::RegionType type, int left, int top, int right, int bottom)
{
const int tries = 10;
for (int i = 0; i < tries; ++i) {
HRGN region = 0;
switch (type) {
case QRegion::Rectangle:
region = CreateRectRgn(left, top, right, bottom);
break;
case QRegion::Ellipse:
#ifndef Q_OS_WINCE
region = CreateEllipticRgn(left, top, right, bottom);
#endif
break;
}
if (region) {
if (GetRegionData(region, 0, 0))
return region;
else
DeleteObject(region);
}
}
return 0;
}
QRegion qt_region_from_HRGN(HRGN rgn)
{
int numBytes = GetRegionData(rgn, 0, 0);
if (numBytes == 0)
return QRegion();
char *buf = new char[numBytes];
if (buf == 0)
return QRegion();
RGNDATA *rd = reinterpret_cast<RGNDATA*>(buf);
if (GetRegionData(rgn, numBytes, rd) == 0) {
delete [] buf;
return QRegion();
}
QRegion region;
RECT *r = reinterpret_cast<RECT*>(rd->Buffer);
for (uint i = 0; i < rd->rdh.nCount; ++i) {
QRect rect;
rect.setCoords(r->left, r->top, r->right - 1, r->bottom - 1);
++r;
region |= rect;
}
delete [] buf;
return region;
}
void qt_win_dispose_rgn(HRGN r)
{
if (r)
DeleteObject(r);
}
static void qt_add_rect(HRGN &winRegion, QRect r)
{
HRGN rgn = CreateRectRgn(r.left(), r.top(), r.x() + r.width(), r.y() + r.height());
if (rgn) {
HRGN dest = CreateRectRgn(0,0,0,0);
int result = CombineRgn(dest, winRegion, rgn, RGN_OR);
if (result) {
DeleteObject(winRegion);
winRegion = dest;
}
DeleteObject(rgn);
}
}
void QRegion::ensureHandle() const
{
if (d->rgn)
DeleteObject(d->rgn);
d->rgn = CreateRectRgn(0,0,0,0);
if (d->qt_rgn) {
if (d->qt_rgn->numRects == 1) {
QRect r = d->qt_rgn->extents;
qt_add_rect(d->rgn, r);
return;
}
for (int i = 0;i < d->qt_rgn->numRects;i++) {
QRect r = d->qt_rgn->rects.at(i);
qt_add_rect(d->rgn, r);
}
}
}
QT_END_NAMESPACE
|
