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  • Committer: Bazaar Package Importer
  • Author(s): Fathi Boudra
  • Date: 2009-04-12 23:25:58 UTC
  • mfrom: (1.1.4 upstream) (2.1.2 squeeze)
  • Revision ID: james.westby@ubuntu.com-20090412232558-3bl06x785yr8xm8u
Tags: 5.1.2-1
* New upstream release.
* Bump compat/debhelper to 7.
* Bump Standards-Version to 3.8.1. No changes needed.
* Invert Maintainers and Uploaders field.
* Fix lintian warnings:
  - dh_clean _k deprecated.
  - missing dependency on libc.

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qwt-5.1.1/doc/html/qwt__round__scale__draw_8cpp-source.html
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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 &lt;math.h&gt;</span>
32
 
<a name="l00013"></a>00013 <span class="preprocessor">#include &lt;qpen.h&gt;</span>
33
 
<a name="l00014"></a>00014 <span class="preprocessor">#include &lt;qpainter.h&gt;</span>
34
 
<a name="l00015"></a>00015 <span class="preprocessor">#include &lt;qfontmetrics.h&gt;</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-&gt;startAngle, d_data-&gt;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> &amp;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> &amp;<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> &amp;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> &amp;)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-&gt;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-&gt;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 &amp;center)
96
 
<a name="l00108"></a>00108 {
97
 
<a name="l00109"></a>00109     d_data-&gt;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-&gt;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-&gt;startAngle = qRound(angle1 * 16.0);
111
 
<a name="l00141"></a>00141     d_data-&gt;endAngle = qRound(angle2 * 16.0); 
112
 
<a name="l00142"></a>00142  
113
 
<a name="l00143"></a>00143     <span class="keywordflow">if</span> (d_data-&gt;startAngle == d_data-&gt;endAngle)
114
 
<a name="l00144"></a>00144     {
115
 
<a name="l00145"></a>00145         d_data-&gt;startAngle -= 1;
116
 
<a name="l00146"></a>00146         d_data-&gt;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-&gt;startAngle, d_data-&gt;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-&gt;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 &gt; d_data-&gt;startAngle + 359 * 16)
130
 
<a name="l00168"></a>00168         || (tval &lt; d_data-&gt;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-&gt;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-&gt;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-&gt;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-&gt;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 &lt;= 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-&gt;center.x();
166
 
<a name="l00213"></a>00213     <span class="keyword">const</span> <span class="keywordtype">int</span> cy = d_data-&gt;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-&gt;radius;
168
 
<a name="l00215"></a>00215 
169
 
<a name="l00216"></a>00216     <span class="keywordflow">if</span> ((tval &lt;= d_data-&gt;startAngle + 359 * 16)
170
 
<a name="l00217"></a>00217         || (tval &gt;= d_data-&gt;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-&gt;radius;
192
 
<a name="l00245"></a>00245     <span class="keyword">const</span> <span class="keywordtype">int</span> x = d_data-&gt;center.x() - radius;
193
 
<a name="l00246"></a>00246     <span class="keyword">const</span> <span class="keywordtype">int</span> y = d_data-&gt;center.y() - radius;
194
 
<a name="l00247"></a>00247 
195
 
<a name="l00248"></a>00248     painter-&gt;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 &amp;pen, <span class="keyword">const</span> QFont &amp;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> &amp;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 &amp;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 &lt; (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 &lt; d_data-&gt;startAngle + 360 * 16)
219
 
<a name="l00287"></a>00287                 &amp;&amp; (tval &gt; d_data-&gt;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 &gt; 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) &amp;&amp;
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&nbsp;
259
 
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260
 
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261
 
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262
 
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