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<h1>qwt_round_scale_draw.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
21
<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
22
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
23
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
24
<a name="l00005"></a>00005 <span class="comment"> * </span>
25
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
26
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
27
<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
28
<a name="l00009"></a>00009
29
<a name="l00010"></a>00010 <span class="comment">// vim: expandtab</span>
30
<a name="l00011"></a>00011
31
<a name="l00012"></a>00012 <span class="preprocessor">#include <math.h></span>
32
<a name="l00013"></a>00013 <span class="preprocessor">#include <qpen.h></span>
33
<a name="l00014"></a>00014 <span class="preprocessor">#include <qpainter.h></span>
34
<a name="l00015"></a>00015 <span class="preprocessor">#include <qfontmetrics.h></span>
35
<a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_painter.h"</span>
36
<a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_scale_div.h"</span>
37
<a name="l00018"></a>00018 <span class="preprocessor">#include "qwt_scale_map.h"</span>
38
<a name="l00019"></a>00019 <span class="preprocessor">#include "qwt_round_scale_draw.h"</span>
39
<a name="l00020"></a>00020
40
<a name="l00021"></a>00021 <span class="keyword">class </span>QwtRoundScaleDraw::PrivateData
41
<a name="l00022"></a>00022 {
42
<a name="l00023"></a>00023 <span class="keyword">public</span>:
43
<a name="l00024"></a>00024 PrivateData():
44
<a name="l00025"></a>00025 <a class="code" href="class_qwt_round_scale_draw.html#8653bb6898adb0d563343cd843559e18">center</a>(50, 50),
45
<a name="l00026"></a>00026 <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">radius</a>(50),
46
<a name="l00027"></a>00027 startAngle(-135 * 16),
47
<a name="l00028"></a>00028 endAngle(135 * 16)
48
<a name="l00029"></a>00029 {
49
<a name="l00030"></a>00030 }
50
<a name="l00031"></a>00031
51
<a name="l00032"></a>00032 QPoint <a class="code" href="class_qwt_round_scale_draw.html#8653bb6898adb0d563343cd843559e18">center</a>;
52
<a name="l00033"></a>00033 <span class="keywordtype">int</span> <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">radius</a>;
53
<a name="l00034"></a>00034
54
<a name="l00035"></a>00035 <span class="keywordtype">int</span> startAngle;
55
<a name="l00036"></a>00036 <span class="keywordtype">int</span> endAngle;
56
<a name="l00037"></a>00037 };
57
<a name="l00038"></a>00038
58
<a name="l00046"></a><a class="code" href="class_qwt_round_scale_draw.html#9c44d19488567825d826528b701587c8">00046</a> <a class="code" href="class_qwt_round_scale_draw.html#9c44d19488567825d826528b701587c8">QwtRoundScaleDraw::QwtRoundScaleDraw</a>()
59
<a name="l00047"></a>00047 {
60
<a name="l00048"></a>00048 d_data = <span class="keyword">new</span> QwtRoundScaleDraw::PrivateData;
61
<a name="l00049"></a>00049
62
<a name="l00050"></a>00050 <a class="code" href="class_qwt_round_scale_draw.html#069d658989db2ad96f26b79a298f7d10">setRadius</a>(50);
63
<a name="l00051"></a>00051 <a class="code" href="class_qwt_abstract_scale_draw.html#e7488eb63ad73a2e69acb29ff069c904">scaleMap</a>().<a class="code" href="class_qwt_scale_map.html#a9a63a0b2e4ff81b1df23d9f968cd5b8">setPaintInterval</a>(d_data->startAngle, d_data->endAngle);
64
<a name="l00052"></a>00052 }
65
<a name="l00053"></a>00053
66
<a name="l00055"></a><a class="code" href="class_qwt_round_scale_draw.html#d6237d352a7004166dacfe644bfc4308">00055</a> <a class="code" href="class_qwt_round_scale_draw.html#9c44d19488567825d826528b701587c8">QwtRoundScaleDraw::QwtRoundScaleDraw</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> &other):
67
<a name="l00056"></a>00056 <a class="code" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a>(other)
68
<a name="l00057"></a>00057 {
69
<a name="l00058"></a>00058 d_data = <span class="keyword">new</span> QwtRoundScaleDraw::PrivateData(*other.<a class="code" href="class_qwt_round_scale_draw.html#f9ae2e1bce85893a9ea95679a114ae3b">d_data</a>);
70
<a name="l00059"></a>00059 }
71
<a name="l00060"></a>00060
72
<a name="l00061"></a>00061
73
<a name="l00063"></a><a class="code" href="class_qwt_round_scale_draw.html#81583432e629cd8a14524b05fabb4731">00063</a> <a class="code" href="class_qwt_round_scale_draw.html#81583432e629cd8a14524b05fabb4731">QwtRoundScaleDraw::~QwtRoundScaleDraw</a>()
74
<a name="l00064"></a>00064 {
75
<a name="l00065"></a>00065 <span class="keyword">delete</span> d_data;
76
<a name="l00066"></a>00066 }
77
<a name="l00067"></a>00067
78
<a name="l00069"></a><a class="code" href="class_qwt_round_scale_draw.html#dc6fc2de0c09ea6b70258a129fecac3a">00069</a> <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> &<a class="code" href="class_qwt_round_scale_draw.html#dc6fc2de0c09ea6b70258a129fecac3a">QwtRoundScaleDraw::operator=</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_round_scale_draw.html">QwtRoundScaleDraw</a> &other)
79
<a name="l00070"></a>00070 {
80
<a name="l00071"></a>00071 *(<a class="code" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a>*)<span class="keyword">this</span> = (<span class="keyword">const</span> <a class="code" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> &)other;
81
<a name="l00072"></a>00072 *d_data = *other.<a class="code" href="class_qwt_round_scale_draw.html#f9ae2e1bce85893a9ea95679a114ae3b">d_data</a>;
82
<a name="l00073"></a>00073 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
83
<a name="l00074"></a>00074 }
84
<a name="l00075"></a>00075
85
<a name="l00084"></a><a class="code" href="class_qwt_round_scale_draw.html#069d658989db2ad96f26b79a298f7d10">00084</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#069d658989db2ad96f26b79a298f7d10">QwtRoundScaleDraw::setRadius</a>(<span class="keywordtype">int</span> radius)
86
<a name="l00085"></a>00085 {
87
<a name="l00086"></a>00086 d_data->radius = radius;
88
<a name="l00087"></a>00087 }
89
<a name="l00088"></a>00088
90
<a name="l00096"></a><a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">00096</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">QwtRoundScaleDraw::radius</a>()<span class="keyword"> const</span>
91
<a name="l00097"></a>00097 <span class="keyword"></span>{
92
<a name="l00098"></a>00098 <span class="keywordflow">return</span> d_data->radius;
93
<a name="l00099"></a>00099 }
94
<a name="l00100"></a>00100
95
<a name="l00107"></a><a class="code" href="class_qwt_round_scale_draw.html#536cdecd6046e4a8434e117c9cd5c180">00107</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#fe2226d225c3d7f50a85a80c86f5eb6e">QwtRoundScaleDraw::moveCenter</a>(<span class="keyword">const</span> QPoint &center)
96
<a name="l00108"></a>00108 {
97
<a name="l00109"></a>00109 d_data->center = center;
98
<a name="l00110"></a>00110 }
99
<a name="l00111"></a>00111
100
<a name="l00113"></a><a class="code" href="class_qwt_round_scale_draw.html#8653bb6898adb0d563343cd843559e18">00113</a> QPoint <a class="code" href="class_qwt_round_scale_draw.html#8653bb6898adb0d563343cd843559e18">QwtRoundScaleDraw::center</a>()<span class="keyword"> const</span>
101
<a name="l00114"></a>00114 <span class="keyword"></span>{
102
<a name="l00115"></a>00115 <span class="keywordflow">return</span> d_data->center;
103
<a name="l00116"></a>00116 }
104
<a name="l00117"></a>00117
105
<a name="l00135"></a><a class="code" href="class_qwt_round_scale_draw.html#5d85678fdb9fbb4d622425aab9ecc681">00135</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#5d85678fdb9fbb4d622425aab9ecc681">QwtRoundScaleDraw::setAngleRange</a>(<span class="keywordtype">double</span> angle1, <span class="keywordtype">double</span> angle2)
106
<a name="l00136"></a>00136 {
107
<a name="l00137"></a>00137 angle1 = qwtLim(angle1, -360.0, 360.0);
108
<a name="l00138"></a>00138 angle2 = qwtLim(angle2, -360.0, 360.0);
109
<a name="l00139"></a>00139
110
<a name="l00140"></a>00140 d_data->startAngle = qRound(angle1 * 16.0);
111
<a name="l00141"></a>00141 d_data->endAngle = qRound(angle2 * 16.0);
112
<a name="l00142"></a>00142
113
<a name="l00143"></a>00143 <span class="keywordflow">if</span> (d_data->startAngle == d_data->endAngle)
114
<a name="l00144"></a>00144 {
115
<a name="l00145"></a>00145 d_data->startAngle -= 1;
116
<a name="l00146"></a>00146 d_data->endAngle += 1;
117
<a name="l00147"></a>00147 }
118
<a name="l00148"></a>00148
119
<a name="l00149"></a>00149 <a class="code" href="class_qwt_abstract_scale_draw.html#e7488eb63ad73a2e69acb29ff069c904">scaleMap</a>().<a class="code" href="class_qwt_scale_map.html#a9a63a0b2e4ff81b1df23d9f968cd5b8">setPaintInterval</a>(d_data->startAngle, d_data->endAngle);
120
<a name="l00150"></a>00150 }
121
<a name="l00151"></a>00151
122
<a name="l00160"></a><a class="code" href="class_qwt_round_scale_draw.html#35cc3c8f1fe89b27e7bf2d57c7560bd8">00160</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#35cc3c8f1fe89b27e7bf2d57c7560bd8">QwtRoundScaleDraw::drawLabel</a>(QPainter *painter, <span class="keywordtype">double</span> value)<span class="keyword"> const</span>
123
<a name="l00161"></a>00161 <span class="keyword"></span>{
124
<a name="l00162"></a>00162 <span class="keyword">const</span> <a class="code" href="class_qwt_text.html">QwtText</a> <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a> = <a class="code" href="class_qwt_abstract_scale_draw.html#9325b265f351e9135cdbb9368e53f68a">tickLabel</a>(painter->font(), value);
125
<a name="l00163"></a>00163 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a>.<a class="code" href="class_qwt_text.html#a7a14283b812f50234fa0ee960e65307">isEmpty</a>() )
126
<a name="l00164"></a>00164 <span class="keywordflow">return</span>;
127
<a name="l00165"></a>00165
128
<a name="l00166"></a>00166 <span class="keyword">const</span> <span class="keywordtype">int</span> tval = <a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().<a class="code" href="class_qwt_scale_map.html#f35bfdc44bad4b6932ab02e60e8e6e29">transform</a>(value);
129
<a name="l00167"></a>00167 <span class="keywordflow">if</span> ((tval > d_data->startAngle + 359 * 16)
130
<a name="l00168"></a>00168 || (tval < d_data->startAngle - 359 * 16))
131
<a name="l00169"></a>00169 {
132
<a name="l00170"></a>00170 <span class="keywordflow">return</span>;
133
<a name="l00171"></a>00171 }
134
<a name="l00172"></a>00172
135
<a name="l00173"></a>00173 <span class="keywordtype">double</span> <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">radius</a> = d_data->radius;
136
<a name="l00174"></a>00174 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Ticks) ||
137
<a name="l00175"></a>00175 <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Backbone) )
138
<a name="l00176"></a>00176 {
139
<a name="l00177"></a>00177 radius += <a class="code" href="class_qwt_abstract_scale_draw.html#3d5c5940271dd15a32e40b9022bc602a">spacing</a>();
140
<a name="l00178"></a>00178 }
141
<a name="l00179"></a>00179
142
<a name="l00180"></a>00180 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Ticks) )
143
<a name="l00181"></a>00181 radius += <a class="code" href="class_qwt_abstract_scale_draw.html#89c8ece6fcf3a9ce422c2cbb5da2237d">majTickLength</a>();
144
<a name="l00182"></a>00182
145
<a name="l00183"></a>00183 <span class="keyword">const</span> QSize sz = <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a>.<a class="code" href="class_qwt_text.html#c8d26df733ce1b392eb6a9444468c480">textSize</a>(painter->font());
146
<a name="l00184"></a>00184 <span class="keyword">const</span> <span class="keywordtype">double</span> arc = tval / 16.0 / 360.0 * 2 * M_PI;
147
<a name="l00185"></a>00185
148
<a name="l00186"></a>00186 <span class="keyword">const</span> <span class="keywordtype">int</span> x = d_data->center.x() +
149
<a name="l00187"></a>00187 qRound((radius + sz.width() / 2.0) * sin(arc));
150
<a name="l00188"></a>00188 <span class="keyword">const</span> <span class="keywordtype">int</span> y = d_data->center.y() -
151
<a name="l00189"></a>00189 qRound( (radius + sz.height() / 2.0) * cos(arc));
152
<a name="l00190"></a>00190
153
<a name="l00191"></a>00191 <span class="keyword">const</span> QRect r(x - sz.width() / 2, y - sz.height() / 2,
154
<a name="l00192"></a>00192 sz.width(), sz.height() );
155
<a name="l00193"></a>00193 <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a>.<a class="code" href="class_qwt_text.html#f3109303b3e0fea0ee21879666c3c870">draw</a>(painter, r);
156
<a name="l00194"></a>00194 }
157
<a name="l00195"></a>00195
158
<a name="l00205"></a><a class="code" href="class_qwt_round_scale_draw.html#58fb1c23cc215724883eb96cbf551b06">00205</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#58fb1c23cc215724883eb96cbf551b06">QwtRoundScaleDraw::drawTick</a>(QPainter *painter, <span class="keywordtype">double</span> value, <span class="keywordtype">int</span> len)<span class="keyword"> const</span>
159
<a name="l00206"></a>00206 <span class="keyword"></span>{
160
<a name="l00207"></a>00207 <span class="keywordflow">if</span> ( len <= 0 )
161
<a name="l00208"></a>00208 <span class="keywordflow">return</span>;
162
<a name="l00209"></a>00209
163
<a name="l00210"></a>00210 <span class="keyword">const</span> <span class="keywordtype">int</span> tval = <a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().<a class="code" href="class_qwt_scale_map.html#f35bfdc44bad4b6932ab02e60e8e6e29">transform</a>(value);
164
<a name="l00211"></a>00211
165
<a name="l00212"></a>00212 <span class="keyword">const</span> <span class="keywordtype">int</span> cx = d_data->center.x();
166
<a name="l00213"></a>00213 <span class="keyword">const</span> <span class="keywordtype">int</span> cy = d_data->center.y();
167
<a name="l00214"></a>00214 <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">radius</a> = d_data->radius;
168
<a name="l00215"></a>00215
169
<a name="l00216"></a>00216 <span class="keywordflow">if</span> ((tval <= d_data->startAngle + 359 * 16)
170
<a name="l00217"></a>00217 || (tval >= d_data->startAngle - 359 * 16))
171
<a name="l00218"></a>00218 {
172
<a name="l00219"></a>00219 <span class="keyword">const</span> <span class="keywordtype">double</span> arc = double(tval) / 16.0 * M_PI / 180.0;
173
<a name="l00220"></a>00220
174
<a name="l00221"></a>00221 <span class="keyword">const</span> <span class="keywordtype">double</span> sinArc = sin(arc);
175
<a name="l00222"></a>00222 <span class="keyword">const</span> <span class="keywordtype">double</span> cosArc = cos(arc);
176
<a name="l00223"></a>00223
177
<a name="l00224"></a>00224 <span class="keyword">const</span> <span class="keywordtype">int</span> x1 = qRound( cx + radius * sinArc );
178
<a name="l00225"></a>00225 <span class="keyword">const</span> <span class="keywordtype">int</span> x2 = qRound( cx + (radius + len) * sinArc );
179
<a name="l00226"></a>00226 <span class="keyword">const</span> <span class="keywordtype">int</span> y1 = qRound( cy - radius * cosArc );
180
<a name="l00227"></a>00227 <span class="keyword">const</span> <span class="keywordtype">int</span> y2 = qRound( cy - (radius + len) * cosArc );
181
<a name="l00228"></a>00228
182
<a name="l00229"></a>00229 <a class="code" href="class_qwt_painter.html#f809f23704df7e05f51222daa296ca80">QwtPainter::drawLine</a>(painter, x1, y1, x2, y2);
183
<a name="l00230"></a>00230 }
184
<a name="l00231"></a>00231 }
185
<a name="l00232"></a>00232
186
<a name="l00239"></a><a class="code" href="class_qwt_round_scale_draw.html#845dc48b006ee168415112f39e80da09">00239</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_round_scale_draw.html#845dc48b006ee168415112f39e80da09">QwtRoundScaleDraw::drawBackbone</a>(QPainter *painter)<span class="keyword"> const</span>
187
<a name="l00240"></a>00240 <span class="keyword"></span>{
188
<a name="l00241"></a>00241 <span class="keyword">const</span> <span class="keywordtype">int</span> a1 = qRound(qwtMin(<a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().p1(), <a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().p2()) - 90 * 16);
189
<a name="l00242"></a>00242 <span class="keyword">const</span> <span class="keywordtype">int</span> a2 = qRound(qwtMax(<a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().p1(), <a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().p2()) - 90 * 16);
190
<a name="l00243"></a>00243
191
<a name="l00244"></a>00244 <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_round_scale_draw.html#52de381651527d25721576daea310ead">radius</a> = d_data->radius;
192
<a name="l00245"></a>00245 <span class="keyword">const</span> <span class="keywordtype">int</span> x = d_data->center.x() - radius;
193
<a name="l00246"></a>00246 <span class="keyword">const</span> <span class="keywordtype">int</span> y = d_data->center.y() - radius;
194
<a name="l00247"></a>00247
195
<a name="l00248"></a>00248 painter->drawArc(x, y, 2 * radius, 2 * radius,
196
<a name="l00249"></a>00249 -a2, a2 - a1 + 1); <span class="comment">// counterclockwise</span>
197
<a name="l00250"></a>00250 }
198
<a name="l00251"></a>00251
199
<a name="l00267"></a><a class="code" href="class_qwt_round_scale_draw.html#7c357fc6d4c615c1848e696f7fe7912c">00267</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_round_scale_draw.html#7c357fc6d4c615c1848e696f7fe7912c">QwtRoundScaleDraw::extent</a>(<span class="keyword">const</span> QPen &pen, <span class="keyword">const</span> QFont &font)<span class="keyword"> const</span>
200
<a name="l00268"></a>00268 <span class="keyword"></span>{
201
<a name="l00269"></a>00269 <span class="keywordtype">int</span> d = 0;
202
<a name="l00270"></a>00270
203
<a name="l00271"></a>00271 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Labels) )
204
<a name="l00272"></a>00272 {
205
<a name="l00273"></a>00273 <span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> &sd = <a class="code" href="class_qwt_abstract_scale_draw.html#d15e796d2fd8bd1e2cfa66715bf58e2e">scaleDiv</a>();
206
<a name="l00274"></a>00274 <span class="keyword">const</span> QwtValueList &ticks = sd.<a class="code" href="class_qwt_scale_div.html#991862ca84dc810d8500b360a0ed7a4f">ticks</a>(QwtScaleDiv::MajorTick);
207
<a name="l00275"></a>00275 <span class="keywordflow">for</span> (uint i = 0; i < (uint)ticks.count(); i++)
208
<a name="l00276"></a>00276 {
209
<a name="l00277"></a>00277 <span class="keyword">const</span> <span class="keywordtype">double</span> value = ticks[i];
210
<a name="l00278"></a>00278 <span class="keywordflow">if</span> ( !sd.<a class="code" href="class_qwt_scale_div.html#95118053365e7fa1882546c7a56ecc0d">contains</a>(value) )
211
<a name="l00279"></a>00279 <span class="keywordflow">continue</span>;
212
<a name="l00280"></a>00280
213
<a name="l00281"></a>00281 <span class="keyword">const</span> <a class="code" href="class_qwt_text.html">QwtText</a> <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a> = <a class="code" href="class_qwt_abstract_scale_draw.html#9325b265f351e9135cdbb9368e53f68a">tickLabel</a>(font, value);
214
<a name="l00282"></a>00282 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a>.<a class="code" href="class_qwt_text.html#a7a14283b812f50234fa0ee960e65307">isEmpty</a>() )
215
<a name="l00283"></a>00283 <span class="keywordflow">continue</span>;
216
<a name="l00284"></a>00284
217
<a name="l00285"></a>00285 <span class="keyword">const</span> <span class="keywordtype">int</span> tval = <a class="code" href="class_qwt_abstract_scale_draw.html#22cf3971a2c6377ea3b2ef1070d87326">map</a>().<a class="code" href="class_qwt_scale_map.html#f35bfdc44bad4b6932ab02e60e8e6e29">transform</a>(value);
218
<a name="l00286"></a>00286 <span class="keywordflow">if</span> ((tval < d_data->startAngle + 360 * 16)
219
<a name="l00287"></a>00287 && (tval > d_data->startAngle - 360 * 16))
220
<a name="l00288"></a>00288 {
221
<a name="l00289"></a>00289 <span class="keyword">const</span> <span class="keywordtype">double</span> arc = tval / 16.0 / 360.0 * 2 * M_PI;
222
<a name="l00290"></a>00290
223
<a name="l00291"></a>00291 <span class="keyword">const</span> QSize sz = <a class="code" href="class_qwt_abstract_scale_draw.html#c1d855f856b746559c41f4f06ec5442d">label</a>.<a class="code" href="class_qwt_text.html#c8d26df733ce1b392eb6a9444468c480">textSize</a>(font);
224
<a name="l00292"></a>00292 <span class="keyword">const</span> <span class="keywordtype">double</span> off = qwtMax(sz.width(), sz.height());
225
<a name="l00293"></a>00293
226
<a name="l00294"></a>00294 <span class="keywordtype">double</span> x = off * sin(arc);
227
<a name="l00295"></a>00295 <span class="keywordtype">double</span> y = off * cos(arc);
228
<a name="l00296"></a>00296
229
<a name="l00297"></a>00297 <span class="keyword">const</span> <span class="keywordtype">int</span> dist = (int)ceil(sqrt(x * x + y * y) + 1 );
230
<a name="l00298"></a>00298 <span class="keywordflow">if</span> ( dist > d )
231
<a name="l00299"></a>00299 d = dist;
232
<a name="l00300"></a>00300 }
233
<a name="l00301"></a>00301 }
234
<a name="l00302"></a>00302 }
235
<a name="l00303"></a>00303
236
<a name="l00304"></a>00304 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Ticks) )
237
<a name="l00305"></a>00305 {
238
<a name="l00306"></a>00306 d += <a class="code" href="class_qwt_abstract_scale_draw.html#89c8ece6fcf3a9ce422c2cbb5da2237d">majTickLength</a>();
239
<a name="l00307"></a>00307 }
240
<a name="l00308"></a>00308
241
<a name="l00309"></a>00309 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Backbone) )
242
<a name="l00310"></a>00310 {
243
<a name="l00311"></a>00311 <span class="keyword">const</span> <span class="keywordtype">int</span> pw = qwtMax( 1, pen.width() ); <span class="comment">// penwidth can be zero</span>
244
<a name="l00312"></a>00312 d += pw;
245
<a name="l00313"></a>00313 }
246
<a name="l00314"></a>00314
247
<a name="l00315"></a>00315 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Labels) &&
248
<a name="l00316"></a>00316 ( <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Ticks) ||
249
<a name="l00317"></a>00317 <a class="code" href="class_qwt_abstract_scale_draw.html#8a69a890d349a9e03c145b20b5835e8a">hasComponent</a>(QwtAbstractScaleDraw::Backbone) ) )
250
<a name="l00318"></a>00318 {
251
<a name="l00319"></a>00319 d += <a class="code" href="class_qwt_abstract_scale_draw.html#3d5c5940271dd15a32e40b9022bc602a">spacing</a>();
252
<a name="l00320"></a>00320 }
253
<a name="l00321"></a>00321
254
<a name="l00322"></a>00322 d = qwtMax(d, <a class="code" href="class_qwt_abstract_scale_draw.html#3ddfc4b108cbf093c89a4596109b63fd">minimumExtent</a>());
255
<a name="l00323"></a>00323
256
<a name="l00324"></a>00324 <span class="keywordflow">return</span> d;
257
<a name="l00325"></a>00325 }
258
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sat May 24 18:47:40 2008 for Qwt User's Guide by
259
<a href="http://www.doxygen.org/index.html">
260
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.0 </small></address>
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qwt-5.1.1/doc/html/qwt__round__scale__draw_8cpp-source.html
