source: trunk/src/gui/painting/qcssutil.cpp@ 778

Last change on this file since 778 was 651, checked in by Dmitry A. Kuminov, 16 years ago

trunk: Merged in qt 4.6.2 sources.
File size: 16.5 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtGui module of the Qt Toolkit.
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9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
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24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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28** GNU General Public License Usage
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30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
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41
42#include "qcssutil_p.h"
43#include "private/qcssparser_p.h"
44#include "qpainter.h"
45#include <qmath.h>
46
47#ifndef QT_NO_CSSPARSER
48
49QT_BEGIN_NAMESPACE
50
51using namespace QCss;
52
53static QPen qPenFromStyle(const QBrush& b, qreal width, BorderStyle s)
54{
55 Qt::PenStyle ps = Qt::NoPen;
56
57 switch (s) {
58 case BorderStyle_Dotted:
59 ps = Qt::DotLine;
60 break;
61 case BorderStyle_Dashed:
62 ps = width == 1 ? Qt::DotLine : Qt::DashLine;
63 break;
64 case BorderStyle_DotDash:
65 ps = Qt::DashDotLine;
66 break;
67 case BorderStyle_DotDotDash:
68 ps = Qt::DashDotDotLine;
69 break;
70 case BorderStyle_Inset:
71 case BorderStyle_Outset:
72 case BorderStyle_Solid:
73 ps = Qt::SolidLine;
74 break;
75 default:
76 break;
77 }
78
79 return QPen(b, width, ps, Qt::FlatCap);
80}
81
82void qDrawRoundedCorners(QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2,
83 const QSizeF& r1, const QSizeF& r2,
84 Edge edge, BorderStyle s, QBrush c)
85{
86 const qreal pw = (edge == TopEdge || edge == BottomEdge) ? y2-y1 : x2-x1;
87 if (s == BorderStyle_Double) {
88 qreal wby3 = pw/3;
89 switch (edge) {
90 case TopEdge:
91 case BottomEdge:
92 qDrawRoundedCorners(p, x1, y1, x2, y1+wby3, r1, r2, edge, BorderStyle_Solid, c);
93 qDrawRoundedCorners(p, x1, y2-wby3, x2, y2, r1, r2, edge, BorderStyle_Solid, c);
94 break;
95 case LeftEdge:
96 qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
97 qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
98 break;
99 case RightEdge:
100 qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
101 qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
102 break;
103 default:
104 break;
105 }
106 return;
107 } else if (s == BorderStyle_Ridge || s == BorderStyle_Groove) {
108 BorderStyle s1, s2;
109 if (s == BorderStyle_Groove) {
110 s1 = BorderStyle_Inset;
111 s2 = BorderStyle_Outset;
112 } else {
113 s1 = BorderStyle_Outset;
114 s2 = BorderStyle_Inset;
115 }
116 int pwby2 = qRound(pw/2);
117 switch (edge) {
118 case TopEdge:
119 qDrawRoundedCorners(p, x1, y1, x2, y1 + pwby2, r1, r2, TopEdge, s1, c);
120 qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, TopEdge, s2, c);
121 break;
122 case BottomEdge:
123 qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, BottomEdge, s1, c);
124 qDrawRoundedCorners(p, x1, y1, x2, y2-pwby2, r1, r2, BottomEdge, s2, c);
125 break;
126 case LeftEdge:
127 qDrawRoundedCorners(p, x1, y1, x1 + pwby2, y2, r1, r2, LeftEdge, s1, c);
128 qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, LeftEdge, s2, c);
129 break;
130 case RightEdge:
131 qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, RightEdge, s1, c);
132 qDrawRoundedCorners(p, x1, y1, x2 - pwby2, y2, r1, r2, RightEdge, s2, c);
133 break;
134 default:
135 break;
136 }
137 } else if ((s == BorderStyle_Outset && (edge == TopEdge || edge == LeftEdge))
138 || (s == BorderStyle_Inset && (edge == BottomEdge || edge == RightEdge)))
139 c = c.color().lighter();
140
141 p->save();
142 qreal pwby2 = pw/2;
143 p->setBrush(Qt::NoBrush);
144 QPen pen = qPenFromStyle(c, pw, s);
145 pen.setCapStyle(Qt::SquareCap); // this eliminates the offby1 errors that we might hit below
146 p->setPen(pen);
147 switch (edge) {
148 case TopEdge:
149 if (!r1.isEmpty())
150 p->drawArc(QRectF(x1 - r1.width() + pwby2, y1 + pwby2,
151 2*r1.width() - pw, 2*r1.height() - pw), 135*16, -45*16);
152 if (!r2.isEmpty())
153 p->drawArc(QRectF(x2 - r2.width() + pwby2, y1 + pwby2,
154 2*r2.width() - pw, 2*r2.height() - pw), 45*16, 45*16);
155 break;
156 case BottomEdge:
157 if (!r1.isEmpty())
158 p->drawArc(QRectF(x1 - r1.width() + pwby2, y2 - 2*r1.height() + pwby2,
159 2*r1.width() - pw, 2*r1.height() - pw), -90 * 16, -45 * 16);
160 if (!r2.isEmpty())
161 p->drawArc(QRectF(x2 - r2.width() + pwby2, y2 - 2*r2.height() + pwby2,