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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/* This file is part of the KDE project
* Copyright (C) 2007 Jan Hambrecht <jaham@gmx.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "EnhancedPathHandle.h"
#include "EnhancedPathShape.h"
#include "EnhancedPathParameter.h"
#include <KoShapeSavingContext.h>
#include <KoXmlReader.h>
#include <KoXmlWriter.h>
#include <KoXmlNS.h>
#include <KoShapeLoadingContext.h>
#include <KoOdfWorkaround.h>
#include <math.h>
EnhancedPathHandle::EnhancedPathHandle(EnhancedPathShape *parent)
: m_parent(parent)
, m_positionX(0), m_positionY(0)
, m_minimumX(0), m_minimumY(0)
, m_maximumX(0), m_maximumY(0)
, m_polarX(0), m_polarY(0)
, m_minRadius(0), m_maxRadius(0)
{
Q_ASSERT(m_parent);
}
EnhancedPathHandle::~EnhancedPathHandle()
{
}
bool EnhancedPathHandle::hasPosition() const
{
return m_positionX && m_positionY;
}
void EnhancedPathHandle::setPosition(EnhancedPathParameter *positionX, EnhancedPathParameter *positionY)
{
m_positionX = positionX;
m_positionY = positionY;
}
QPointF EnhancedPathHandle::position()
{
if (!hasPosition())
return QPointF();
QPointF position(m_positionX->evaluate(), m_positionY->evaluate());
if (isPolar()) {
// convert polar coordinates into cartesian coordinates
QPointF center(m_polarX->evaluate(), m_polarY->evaluate());
qreal angleInRadian = position.x() * M_PI / 180.0;
position = center + position.y() * QPointF(cos(angleInRadian), sin(angleInRadian));
}
return position;
}
void EnhancedPathHandle::changePosition(const QPointF &position)
{
if (! hasPosition())
return;
QPointF constrainedPosition(position);
if (isPolar()) {
// convert cartesian coordinates into polar coordinates
QPointF polarCenter(m_polarX->evaluate(), m_polarY->evaluate());
QPointF diff = constrainedPosition - polarCenter;
// compute the polar radius
qreal radius = sqrt(diff.x()*diff.x() + diff.y()*diff.y());
// compute the polar angle
qreal angle = atan2(diff.y(), diff.x());
if (angle < 0.0)
angle += 2 * M_PI;
// constrain the radius
if (m_minRadius)
radius = qMax(m_minRadius->evaluate(), radius);
if (m_maxRadius)
radius = qMin(m_maxRadius->evaluate(), radius);
constrainedPosition.setX(angle * 180.0 / M_PI);
constrainedPosition.setY(radius);
} else {
// constrain x coordinate
if (m_minimumX)
constrainedPosition.setX(qMax(m_minimumX->evaluate(), constrainedPosition.x()));
if (m_maximumX)
constrainedPosition.setX(qMin(m_maximumX->evaluate(), constrainedPosition.x()));
// constrain y coordinate
if (m_minimumY)
constrainedPosition.setY(qMax(m_minimumY->evaluate(), constrainedPosition.y()));
if (m_maximumY)
constrainedPosition.setY(qMin(m_maximumY->evaluate(), constrainedPosition.y()));
}
m_positionX->modify(constrainedPosition.x());
m_positionY->modify(constrainedPosition.y());
}
void EnhancedPathHandle::setRangeX(EnhancedPathParameter *minX, EnhancedPathParameter *maxX)
{
m_minimumX = minX;
m_maximumX = maxX;
}
void EnhancedPathHandle::setRangeY(EnhancedPathParameter *minY, EnhancedPathParameter *maxY)
{
m_minimumY = minY;
m_maximumY = maxY;
}
void EnhancedPathHandle::setPolarCenter(EnhancedPathParameter* polarX, EnhancedPathParameter* polarY)
{
m_polarX = polarX;
m_polarY = polarY;
}
void EnhancedPathHandle::setRadiusRange(EnhancedPathParameter *minRadius, EnhancedPathParameter *maxRadius)
{
m_minRadius = minRadius;
m_maxRadius = maxRadius;
}
bool EnhancedPathHandle::isPolar() const
{
return m_polarX && m_polarY;
}
void EnhancedPathHandle::saveOdf(KoShapeSavingContext & context) const
{
if (! hasPosition())
return;
context.xmlWriter().startElement("draw:handle");
context.xmlWriter().addAttribute("draw:handle-position", m_positionX->toString() + ' ' + m_positionY->toString());
if (isPolar()) {
context.xmlWriter().addAttribute("draw:handle-polar", m_polarX->toString() + ' ' + m_polarY->toString());
if (m_minRadius)
context.xmlWriter().addAttribute("draw:handle-radius-range-minimum", m_minRadius->toString());
if (m_maxRadius)
context.xmlWriter().addAttribute("draw:handle-radius-range-maximum", m_maxRadius->toString());
} else {
if (m_minimumX)
context.xmlWriter().addAttribute("draw:handle-range-x-minimum", m_minimumX->toString());
if (m_maximumX)
context.xmlWriter().addAttribute("draw:handle-range-x-maximum", m_maximumX->toString());
if (m_minimumY)
context.xmlWriter().addAttribute("draw:handle-range-y-minimum", m_minimumY->toString());
if (m_maximumY)
context.xmlWriter().addAttribute("draw:handle-range-y-maximum", m_maximumY->toString());
}
context.xmlWriter().endElement(); // draw:handle
}
bool EnhancedPathHandle::loadOdf(const KoXmlElement & element, KoShapeLoadingContext &context)
{
if (element.localName() != "handle" || element.namespaceURI() != KoXmlNS::draw)
return false;
QString position = element.attributeNS(KoXmlNS::draw, "handle-position");
#ifndef NWORKAROUND_ODF_BUGS
KoOdfWorkaround::fixEnhancedPathPolarHandlePosition(position, element, context);
#endif
QStringList tokens = position.simplified().split(' ');
if (tokens.count() != 2)
return false;
setPosition(m_parent->parameter(tokens[0]), m_parent->parameter(tokens[1]));
// check if we have a polar handle
if (element.hasAttributeNS(KoXmlNS::draw, "handle-polar")) {
QString polar = element.attributeNS(KoXmlNS::draw, "handle-polar");
QStringList tokens = polar.simplified().split(' ');
if (tokens.count() == 2) {
setPolarCenter(m_parent->parameter(tokens[0]), m_parent->parameter(tokens[1]));
QString minRadius = element.attributeNS(KoXmlNS::draw, "handle-radius-range-minimum");
QString maxRadius = element.attributeNS(KoXmlNS::draw, "handle-radius-range-maximum");
if (!minRadius.isEmpty() && !maxRadius.isEmpty())
setRadiusRange(m_parent->parameter(minRadius), m_parent->parameter(maxRadius));
}
} else {
QString minX = element.attributeNS(KoXmlNS::draw, "handle-range-x-minimum");
QString maxX = element.attributeNS(KoXmlNS::draw, "handle-range-x-maximum");
if (! minX.isEmpty() && ! maxX.isEmpty())
setRangeX(m_parent->parameter(minX), m_parent->parameter(maxX));
QString minY = element.attributeNS(KoXmlNS::draw, "handle-range-y-minimum");
QString maxY = element.attributeNS(KoXmlNS::draw, "handle-range-y-maximum");
if (! minY.isEmpty() && ! maxY.isEmpty())
setRangeY(m_parent->parameter(minY), m_parent->parameter(maxY));
}
return hasPosition();
}
QString EnhancedPathHandle::positionX() const
{
return m_positionX->toString();
}
QString EnhancedPathHandle::positionY() const
{
return m_positionY->toString();
}
|
