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<h1>qwt_marker.cpp</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> * </span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="comment">// vim: expandtab</span>
00011
00012 <span class="preprocessor">#include <qpainter.h></span>
00013 <span class="preprocessor">#include "qwt_painter.h"</span>
00014 <span class="preprocessor">#include "qwt_marker.h"</span>
00015 <span class="preprocessor">#include "<a class="code" href="qwt__math_8h.html">qwt_math.h</a>"</span>
00016
00017 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> LabelDist = 2;
00018
<a name="l00020"></a><a class="code" href="class_qwt_marker.html#a0">00020</a> <a class="code" href="class_qwt_marker.html#a0">QwtMarker::QwtMarker</a>()
00021 {
00022 <span class="comment">// QwtMarker.draw() assumes that d_label->alignment() == Qt::AlignCenter. </span>
00023 d_label = <a class="code" href="class_qwt_text.html#e0">QwtText::makeText</a>(QString::null, Qt::AlignCenter, QFont());
00024 d_align = Qt::AlignCenter;
00025 d_style = NoLine;
00026 }
00027
<a name="l00029"></a><a class="code" href="class_qwt_marker.html#a1">00029</a> <a class="code" href="class_qwt_marker.html#a1">QwtMarker::~QwtMarker</a>()
00030 {
00031 <span class="keyword">delete</span> d_label;
00032 }
00033
<a name="l00038"></a><a class="code" href="class_qwt_marker.html#a2">00038</a> <a class="code" href="class_qwt_marker.html#a0">QwtMarker::QwtMarker</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_marker.html">QwtMarker</a> &m)
00039 {
00040 d_label = m.<a class="code" href="class_qwt_marker.html#r0">d_label</a>-><a class="code" href="class_qwt_text.html#a19">clone</a>();
00041 d_align = m.<a class="code" href="class_qwt_marker.html#r1">d_align</a>;
00042 d_pen = m.<a class="code" href="class_qwt_marker.html#r2">d_pen</a>;
00043 d_sym = m.<a class="code" href="class_qwt_marker.html#r3">d_sym</a>;
00044 d_style = m.<a class="code" href="class_qwt_marker.html#r4">d_style</a>;
00045 }
00046
<a name="l00051"></a><a class="code" href="class_qwt_marker.html#a3">00051</a> <a class="code" href="class_qwt_marker.html">QwtMarker</a>& <a class="code" href="class_qwt_marker.html#a3">QwtMarker::operator=</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_marker.html">QwtMarker</a> &m)
00052 {
00053 <span class="keywordflow">if</span> (<span class="keyword">this</span> != &m)
00054 {
00055 d_label = m.<a class="code" href="class_qwt_marker.html#r0">d_label</a>-><a class="code" href="class_qwt_text.html#a19">clone</a>();
00056 d_align = m.<a class="code" href="class_qwt_marker.html#r1">d_align</a>;
00057 d_pen = m.<a class="code" href="class_qwt_marker.html#r2">d_pen</a>;
00058 d_sym = m.<a class="code" href="class_qwt_marker.html#r3">d_sym</a>;
00059 d_style = m.<a class="code" href="class_qwt_marker.html#r4">d_style</a>;
00060 }
00061
00062 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
00063 }
00064
<a name="l00072"></a><a class="code" href="class_qwt_marker.html#a21">00072</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a21">QwtMarker::draw</a>(QPainter *p, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keyword">const</span> QRect &r)
00073 {
00074 <span class="comment">// QwtMarker.draw() assumes that d_label->alignment() == Qt::AlignCenter. </span>
00075
00076 <span class="comment">// draw lines</span>
00077 <span class="keywordflow">if</span> (d_style != NoLine)
00078 {
00079 p->setPen(d_pen);
00080 <span class="keywordflow">if</span> ((d_style == HLine) || (d_style == Cross))
00081 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, r.left(), y, r.right(), y);
00082 <span class="keywordflow">if</span> ((d_style == VLine)||(d_style == Cross))
00083 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, x, r.top(), x, r.bottom());
00084 }
00085
00086 <span class="comment">// draw symbol</span>
00087 QSize sSym(0, 0);
00088 <span class="keywordflow">if</span> (d_sym.<a class="code" href="class_qwt_symbol.html#a13">style</a>() != QwtSymbol::None)
00089 {
00090 sSym = d_sym.<a class="code" href="class_qwt_symbol.html#a12">size</a>();
00091 d_sym.<a class="code" href="class_qwt_symbol.html#a14">draw</a>(p, x, y);
00092 }
00093
00094 <span class="comment">// draw label</span>
00095 <span class="keywordflow">if</span> (!d_label-><a class="code" href="class_qwt_text.html#a2">text</a>().isEmpty())
00096 {
00097 <span class="keywordtype">int</span> xlw = qwtMax(<span class="keywordtype">int</span>(d_pen.width()), 1);
00098 <span class="keywordtype">int</span> ylw = xlw;
00099 <span class="keywordtype">int</span> xlw1;
00100 <span class="keywordtype">int</span> ylw1;
00101
00102 <span class="keyword">const</span> <span class="keywordtype">int</span> xLabelDist =
00103 <a class="code" href="class_qwt_painter.html#e3">QwtPainter::metricsMap</a>().screenToLayoutX(LabelDist);
00104 <span class="keyword">const</span> <span class="keywordtype">int</span> yLabelDist =
00105 <a class="code" href="class_qwt_painter.html#e3">QwtPainter::metricsMap</a>().screenToLayoutY(LabelDist);
00106
00107 <span class="keywordflow">if</span> ((d_style == VLine) || (d_style == HLine))
00108 {
00109 xlw1 = (xlw + 1) / 2 + xLabelDist;
00110 xlw = xlw / 2 + xLabelDist;
00111 ylw1 = (ylw + 1) / 2 + yLabelDist;
00112 ylw = ylw / 2 + yLabelDist;
00113 }
00114 <span class="keywordflow">else</span>
00115 {
00116 xlw1 = qwtMax((xlw + 1) / 2, (sSym.width() + 1) / 2) + xLabelDist;
00117 xlw = qwtMax(xlw / 2, (sSym.width() + 1) / 2) + xLabelDist;
00118 ylw1 = qwtMax((ylw + 1) / 2, (sSym.height() + 1) / 2) + yLabelDist;
00119 ylw = qwtMax(ylw / 2, (sSym. height() + 1) / 2) + yLabelDist;
00120 }
00121
00122 <span class="comment">// tr is offset with respect to (0, 0) obeying the immutable flags </span>
00123 <span class="comment">// Qt::AlignCenter. Hence: </span>
00124 <span class="comment">// tr.x() == -tr.width()/2</span>
00125 <span class="comment">// tr.y() == -tr.height()/2</span>
00126 QRect tr = d_label-><a class="code" href="class_qwt_text.html#a17">boundingRect</a>(p);
00127
00128 <span class="keywordtype">int</span> dx = x;
00129 <span class="keywordtype">int</span> dy = y;
00130
00131 <span class="keywordflow">if</span> (d_style == VLine)
00132 {
00133 <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignTop)
00134 dy = r.top() + yLabelDist - tr.y();
00135 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignBottom)
00136 dy = r.bottom() - yLabelDist + tr.y();
00137 <span class="keywordflow">else</span>
00138 dy = r.top() + r.height() / 2;
00139 }
00140 <span class="keywordflow">else</span>
00141 {
00142 <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignTop)
00143 dy += tr.y() - ylw1;
00144 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignBottom)
00145 dy -= tr.y() - ylw1;
00146 }
00147
00148
00149 <span class="keywordflow">if</span> (d_style == HLine)
00150 {
00151 <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignLeft)
00152 dx = r.left() + xLabelDist - tr.x();
00153 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignRight)
00154 dx = r.right() - xLabelDist + tr.x();
00155 <span class="keywordflow">else</span>
00156 dx = r.left() + r.width() / 2;
00157 }
00158 <span class="keywordflow">else</span>
00159 {
00160 <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignLeft)
00161 dx += tr.x() - xlw1;
00162 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (d_align & (<span class="keywordtype">int</span>) Qt::AlignRight)
00163 dx -= tr.x() - xlw1;
00164 }
00165
00166 tr.moveBy(dx, dy);
00167 d_label-><a class="code" href="class_qwt_text.html#a18">draw</a>(p, tr);
00168 }
00169 }
00170
<a name="l00176"></a><a class="code" href="class_qwt_marker.html#a19">00176</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a19">QwtMarker::setFont</a>(<span class="keyword">const</span> QFont &f)
00177 {
00178 <span class="keywordflow">if</span> ( f == d_label-><a class="code" href="class_qwt_text.html#a6">font</a>() )
00179 <span class="keywordflow">return</span>;
00180
00181 d_label-><a class="code" href="class_qwt_text.html#a5">setFont</a>(f);
00182 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00183 }
00184
<a name="l00189"></a><a class="code" href="class_qwt_marker.html#a20">00189</a> <span class="keyword">const</span> QFont <a class="code" href="class_qwt_marker.html#a20">QwtMarker::font</a>()<span class="keyword"> const </span>
00190 <span class="keyword"></span>{
00191 <span class="keywordflow">return</span> d_label-><a class="code" href="class_qwt_text.html#a6">font</a>();
00192 }
00193
00194
<a name="l00201"></a><a class="code" href="class_qwt_marker.html#a4">00201</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a4">QwtMarker::setLineStyle</a>(QwtMarker::LineStyle st)
00202 {
00203 <span class="keywordflow">if</span> ( st != d_style )
00204 {
00205 d_style = st;
00206 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00207 }
00208 }
00209
<a name="l00214"></a><a class="code" href="class_qwt_marker.html#a5">00214</a> <a class="code" href="class_qwt_marker.html#w4">QwtMarker::LineStyle</a> <a class="code" href="class_qwt_marker.html#a5">QwtMarker::lineStyle</a>()<span class="keyword"> const </span>
00215 <span class="keyword"></span>{
00216 <span class="keywordflow">return</span> d_style;
00217 }
00218
<a name="l00224"></a><a class="code" href="class_qwt_marker.html#a6">00224</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a6">QwtMarker::setSymbol</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_symbol.html">QwtSymbol</a> &s)
00225 {
00226 d_sym = s;
00227 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00228 }
00229
<a name="l00234"></a><a class="code" href="class_qwt_marker.html#a7">00234</a> <span class="keyword">const</span> <a class="code" href="class_qwt_symbol.html">QwtSymbol</a> &<a class="code" href="class_qwt_marker.html#a7">QwtMarker::symbol</a>()<span class="keyword"> const </span>
00235 <span class="keyword"></span>{
00236 <span class="keywordflow">return</span> d_sym;
00237 }
00238
<a name="l00244"></a><a class="code" href="class_qwt_marker.html#a9">00244</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a9">QwtMarker::setLabelText</a>(<span class="keyword">const</span> QString &text)
00245 {
00246 <a class="code" href="class_qwt_marker.html#a8">setLabel</a>(text, d_label-><a class="code" href="class_qwt_text.html#a6">font</a>(), d_label-><a class="code" href="class_qwt_text.html#a11">color</a>(),
00247 d_label-><a class="code" href="class_qwt_text.html#a13">rectPen</a>(), d_label-><a class="code" href="class_qwt_text.html#a15">rectBrush</a>());
00248 }
00249
<a name="l00259"></a><a class="code" href="class_qwt_marker.html#a8">00259</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a8">QwtMarker::setLabel</a>(<span class="keyword">const</span> QString &text, <span class="keyword">const</span> QFont &font,
00260 <span class="keyword">const</span> QColor &color, <span class="keyword">const</span> QPen &pen, <span class="keyword">const</span> QBrush &brush)
00261 {
00262 <span class="keywordflow">if</span> ( text == d_label-><a class="code" href="class_qwt_text.html#a2">text</a>()
00263 && font == d_label-><a class="code" href="class_qwt_text.html#a6">font</a>()
00264 && color == d_label-><a class="code" href="class_qwt_text.html#a11">color</a>()
00265 && pen == d_label-><a class="code" href="class_qwt_text.html#a13">rectPen</a>()
00266 && brush == d_label-><a class="code" href="class_qwt_text.html#a15">rectBrush</a>() )
00267 <span class="keywordflow">return</span>;
00268
00269 <a class="code" href="class_qwt_text.html">QwtText</a> *<a class="code" href="class_qwt_marker.html#a10">label</a> = <a class="code" href="class_qwt_text.html#e0">QwtText::makeText</a>(
00270 text, d_label-><a class="code" href="class_qwt_text.html#a9">alignment</a>(), font, color, pen, brush);
00271
00272 <span class="keyword">delete</span> d_label;
00273 d_label = label;
00274
00275 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00276 }
00277
<a name="l00282"></a><a class="code" href="class_qwt_marker.html#a10">00282</a> <span class="keyword">const</span> QString <a class="code" href="class_qwt_marker.html#a10">QwtMarker::label</a>()<span class="keyword"> const </span>
00283 <span class="keyword"></span>{
00284 <span class="keywordflow">return</span> d_label-><a class="code" href="class_qwt_text.html#a2">text</a>();
00285 }
00286
<a name="l00298"></a><a class="code" href="class_qwt_marker.html#a11">00298</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a11">QwtMarker::setLabelAlignment</a>(<span class="keywordtype">int</span> align)
00299 {
00300 <span class="keywordflow">if</span> ( align == d_align )
00301 <span class="keywordflow">return</span>;
00302
00303 d_align = align;
00304 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00305 }
00306
<a name="l00311"></a><a class="code" href="class_qwt_marker.html#a12">00311</a> <span class="keywordtype">int</span> <a class="code" href="class_qwt_marker.html#a12">QwtMarker::labelAlignment</a>()<span class="keyword"> const </span>
00312 <span class="keyword"></span>{
00313 <span class="keywordflow">return</span> d_align;
00314 }
00315
<a name="l00321"></a><a class="code" href="class_qwt_marker.html#a17">00321</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a17">QwtMarker::setLinePen</a>(<span class="keyword">const</span> QPen &p)
00322 {
00323 <span class="keywordflow">if</span> ( p != d_pen )
00324 {
00325 d_pen = p;
00326 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00327 }
00328 }
00329
<a name="l00334"></a><a class="code" href="class_qwt_marker.html#a18">00334</a> <span class="keyword">const</span> QPen &<a class="code" href="class_qwt_marker.html#a18">QwtMarker::linePen</a>()<span class="keyword"> const </span>
00335 <span class="keyword"></span>{
00336 <span class="keywordflow">return</span> d_pen;
00337 }
00338
<a name="l00344"></a><a class="code" href="class_qwt_marker.html#a13">00344</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a13">QwtMarker::setLabelColor</a>(<span class="keyword">const</span> QColor &color)
00345 {
00346 <span class="keywordflow">if</span> ( color == d_label-><a class="code" href="class_qwt_text.html#a11">color</a>() )
00347 <span class="keywordflow">return</span>;
00348
00349 d_label-><a class="code" href="class_qwt_text.html#a10">setColor</a>(color);
00350 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00351 }
00352
<a name="l00357"></a><a class="code" href="class_qwt_marker.html#a14">00357</a> <span class="keyword">const</span> QColor <a class="code" href="class_qwt_marker.html#a14">QwtMarker::labelColor</a>()<span class="keyword"> const </span>
00358 <span class="keyword"></span>{
00359 <span class="keywordflow">return</span> d_label-><a class="code" href="class_qwt_text.html#a11">color</a>();
00360 }
00361
<a name="l00368"></a><a class="code" href="class_qwt_marker.html#a15">00368</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#a15">QwtMarker::setLabelPen</a>(<span class="keyword">const</span> QPen &p)
00369 {
00370 <span class="keywordflow">if</span> ( p == QPen(d_label-><a class="code" href="class_qwt_text.html#a11">color</a>()) )
00371 <span class="keywordflow">return</span>;
00372
00373 d_label-><a class="code" href="class_qwt_text.html#a10">setColor</a>(p.color());
00374 <a class="code" href="class_qwt_marker.html#b0">markerChanged</a>();
00375 }
00376
<a name="l00382"></a><a class="code" href="class_qwt_marker.html#a16">00382</a> <span class="keyword">const</span> QPen <a class="code" href="class_qwt_marker.html#a16">QwtMarker::labelPen</a>()<span class="keyword"> const </span>
00383 <span class="keyword"></span>{
00384 <span class="keywordflow">return</span> QPen(d_label-><a class="code" href="class_qwt_text.html#a11">color</a>());
00385 }
00386
<a name="l00395"></a><a class="code" href="class_qwt_marker.html#b0">00395</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_marker.html#b0">QwtMarker::markerChanged</a>()
00396 {
00397 }
00398
00399 <span class="comment">// Local Variables:</span>
00400 <span class="comment">// mode: C++</span>
00401 <span class="comment">// c-file-style: "stroustrup"</span>
00402 <span class="comment">// indent-tabs-mode: nil</span>
00403 <span class="comment">// End:</span>
00404
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<img src="doxygen.png" alt="doxygen" align="middle" border=0 ></a> 1.3.8 </small></address>
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