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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "PolarLabelPositionHelper.hxx"
#include "PlottingPositionHelper.hxx"
#include "CommonConverters.hxx"
#include <basegfx/vector/b2dvector.hxx>
#include <basegfx/vector/b2ivector.hxx>
#include <com/sun/star/chart/DataLabelPlacement.hpp>
//.............................................................................
namespace chart
{
//.............................................................................
using namespace ::com::sun::star;
using namespace ::com::sun::star::chart2;
PolarLabelPositionHelper::PolarLabelPositionHelper(
PolarPlottingPositionHelper* pPosHelper
, sal_Int32 nDimensionCount
, const uno::Reference< drawing::XShapes >& xLogicTarget
, ShapeFactory* pShapeFactory )
: LabelPositionHelper( pPosHelper, nDimensionCount, xLogicTarget, pShapeFactory )
, m_pPosHelper(pPosHelper)
{
}
PolarLabelPositionHelper::~PolarLabelPositionHelper()
{
}
awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForLogicValues(
LabelAlignment& rAlignment
, double fLogicValueOnAngleAxis
, double fLogicValueOnRadiusAxis
, double fLogicZ
, sal_Int32 nScreenValueOffsetInRadiusDirection ) const
{
double fUnitCircleAngleDegree = m_pPosHelper->transformToAngleDegree( fLogicValueOnAngleAxis );
double fUnitCircleRadius = m_pPosHelper->transformToRadius( fLogicValueOnRadiusAxis );
return getLabelScreenPositionAndAlignmentForUnitCircleValues(
rAlignment, ::com::sun::star::chart::DataLabelPlacement::OUTSIDE
, fUnitCircleAngleDegree, 0.0
, fUnitCircleRadius, fUnitCircleRadius, fLogicZ, nScreenValueOffsetInRadiusDirection );
}
awt::Point PolarLabelPositionHelper::getLabelScreenPositionAndAlignmentForUnitCircleValues(
LabelAlignment& rAlignment, sal_Int32 nLabelPlacement
, double fUnitCircleStartAngleDegree, double fUnitCircleWidthAngleDegree
, double fUnitCircleInnerRadius, double fUnitCircleOuterRadius
, double fLogicZ
, sal_Int32 nScreenValueOffsetInRadiusDirection ) const
{
bool bCenter = (nLabelPlacement != ::com::sun::star::chart::DataLabelPlacement::OUTSIDE)
&& (nLabelPlacement != ::com::sun::star::chart::DataLabelPlacement::INSIDE);
double fAngleDegree = fUnitCircleStartAngleDegree + fUnitCircleWidthAngleDegree/2.0;
double fRadius = 0.0;
if( !bCenter ) //e.g. for pure pie chart(one ring only) or for angle axis of polyar coordinate system
fRadius = fUnitCircleOuterRadius;
else
fRadius = fUnitCircleInnerRadius + (fUnitCircleOuterRadius-fUnitCircleInnerRadius)/2.0 ;
awt::Point aRet( this->transformSceneToScreenPosition(
m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ+0.5 ) ) );
if(3==m_nDimensionCount && nLabelPlacement == ::com::sun::star::chart::DataLabelPlacement::OUTSIDE)
{
//check whether the upper or the downer edge is more distant from the center
//take the farest point to put the label to
awt::Point aP0( this->transformSceneToScreenPosition(
m_pPosHelper->transformUnitCircleToScene( 0, 0, fLogicZ ) ) );
awt::Point aP1(aRet);
awt::Point aP2( this->transformSceneToScreenPosition(
m_pPosHelper->transformUnitCircleToScene( fAngleDegree, fRadius, fLogicZ-0.5 ) ) );
::basegfx::B2DVector aV0( aP0.X, aP0.Y );
::basegfx::B2DVector aV1( aP1.X, aP1.Y );
::basegfx::B2DVector aV2( aP2.X, aP2.Y );
double fL1 = ::basegfx::B2DVector(aV1-aV0).getLength();
double fL2 = ::basegfx::B2DVector(aV2-aV0).getLength();
if(fL2>fL1)
aRet = aP2;
//calculate new angle for alignment
double fDX = aRet.X-aP0.X;
double fDY = aRet.Y-aP0.Y;
fDY*=-1.0;//drawing layer has inverse y values
if( fDX != 0.0 )
{
fAngleDegree = atan(fDY/fDX)*180.0/F_PI;
if(fDX<0.0)
fAngleDegree+=180.0;
}
else
{
if(fDY>0.0)
fAngleDegree = 90.0;
else
fAngleDegree = 270.0;
}
}
//------------------------------
//set LabelAlignment
if( !bCenter )
{
while(fAngleDegree>360.0)
fAngleDegree-=360.0;
while(fAngleDegree<0.0)
fAngleDegree+=360.0;
bool bOutside = nLabelPlacement == ::com::sun::star::chart::DataLabelPlacement::OUTSIDE;
if(fAngleDegree==0.0)
rAlignment = LABEL_ALIGN_CENTER;
else if(fAngleDegree<=22.5)
rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
else if(fAngleDegree<67.5)
rAlignment = bOutside ? LABEL_ALIGN_RIGHT_TOP : LABEL_ALIGN_LEFT_BOTTOM;
else if(fAngleDegree<112.5)
rAlignment = bOutside ? LABEL_ALIGN_TOP : LABEL_ALIGN_BOTTOM;
else if(fAngleDegree<=157.5)
rAlignment = bOutside ? LABEL_ALIGN_LEFT_TOP : LABEL_ALIGN_RIGHT_BOTTOM;
else if(fAngleDegree<=202.5)
rAlignment = bOutside ? LABEL_ALIGN_LEFT : LABEL_ALIGN_RIGHT;
else if(fAngleDegree<247.5)
rAlignment = bOutside ? LABEL_ALIGN_LEFT_BOTTOM : LABEL_ALIGN_RIGHT_TOP;
else if(fAngleDegree<292.5)
rAlignment = bOutside ? LABEL_ALIGN_BOTTOM : LABEL_ALIGN_TOP;
else if(fAngleDegree<337.5)
rAlignment = bOutside ? LABEL_ALIGN_RIGHT_BOTTOM : LABEL_ALIGN_LEFT_TOP;
else
rAlignment = bOutside ? LABEL_ALIGN_RIGHT : LABEL_ALIGN_LEFT;
}
else
{
rAlignment = LABEL_ALIGN_CENTER;
}
//add a scaling independent Offset if requested
if( nScreenValueOffsetInRadiusDirection != 0)
{
awt::Point aOrigin( this->transformSceneToScreenPosition(
m_pPosHelper->transformUnitCircleToScene( 0.0, 0.0, fLogicZ+0.5 ) ) );
basegfx::B2IVector aDirection( aRet.X- aOrigin.X, aRet.Y- aOrigin.Y );
aDirection.setLength(nScreenValueOffsetInRadiusDirection);
aRet.X += aDirection.getX();
aRet.Y += aDirection.getY();
}
return aRet;
}
//.............................................................................
} //namespace chart
//.............................................................................
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
