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<title>Qwt User's Guide: qwt_symbol.cpp Source File</title>
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<h1>qwt_symbol.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="preprocessor">#include <qpainter.h></span>
00011 <span class="preprocessor">#include <qpaintdevicemetrics.h></span>
00012 <span class="preprocessor">#include <qapplication.h></span>
00013 <span class="preprocessor">#include "qwt_painter.h"</span>
00014 <span class="preprocessor">#include "qwt_symbol.h"</span>
00015
<a name="l00022"></a><a class="code" href="class_qwt_symbol.html#a0">00022</a> <a class="code" href="class_qwt_symbol.html#a0">QwtSymbol::QwtSymbol</a>():
00023 d_brush(Qt::gray),
00024 d_pen(Qt::black),
00025 d_size(0,0),
00026 d_style(<a class="code" href="class_qwt_symbol.html">QwtSymbol</a>::None)
00027 {
00028 }
00029
<a name="l00037"></a><a class="code" href="class_qwt_symbol.html#a1">00037</a> <a class="code" href="class_qwt_symbol.html#a0">QwtSymbol::QwtSymbol</a>(QwtSymbol::Style style, <span class="keyword">const</span> QBrush &brush,
00038 <span class="keyword">const</span> QPen &pen, <span class="keyword">const</span> QSize &size):
00039 d_brush(brush),
00040 d_pen(pen),
00041 d_size(size),
00042 d_style(style)
00043 {
00044 }
00045
<a name="l00047"></a><a class="code" href="class_qwt_symbol.html#a2">00047</a> <a class="code" href="class_qwt_symbol.html#a2">QwtSymbol::~QwtSymbol</a>()
00048 {
00049 }
00050
<a name="l00060"></a><a class="code" href="class_qwt_symbol.html#a6">00060</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a5">QwtSymbol::setSize</a>(<span class="keywordtype">int</span> w, <span class="keywordtype">int</span> h)
00061 {
00062 <span class="keywordflow">if</span> ((w >= 0) && (h < 0))
00063 h = w;
00064 d_size = QSize(w,h);
00065 }
00066
<a name="l00068"></a><a class="code" href="class_qwt_symbol.html#a5">00068</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a5">QwtSymbol::setSize</a>(<span class="keyword">const</span> QSize &s)
00069 {
00070 <span class="keywordflow">if</span> (s.isValid())
00071 d_size = s;
00072 }
00073
<a name="l00080"></a><a class="code" href="class_qwt_symbol.html#a7">00080</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a7">QwtSymbol::setBrush</a>(<span class="keyword">const</span> QBrush &br)
00081 {
00082 d_brush = br;
00083 }
00084
<a name="l00092"></a><a class="code" href="class_qwt_symbol.html#a8">00092</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a8">QwtSymbol::setPen</a>(<span class="keyword">const</span> QPen &pn)
00093 {
00094 d_pen = pn;
00095 }
00096
<a name="l00100"></a><a class="code" href="class_qwt_symbol.html#a15">00100</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a14">QwtSymbol::draw</a>(QPainter *painter, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y)<span class="keyword"> const</span>
00101 <span class="keyword"></span>{
00102 <a class="code" href="class_qwt_symbol.html#a14">draw</a>(painter, QPoint(x, y));
00103 }
00104
00105
<a name="l00116"></a><a class="code" href="class_qwt_symbol.html#a16">00116</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a14">QwtSymbol::draw</a>(QPainter *painter, <span class="keyword">const</span> QRect& r)<span class="keyword"> const</span>
00117 <span class="keyword"></span>{
00118 <span class="keyword">const</span> <span class="keywordtype">int</span> w2 = r.width() / 2;
00119 <span class="keyword">const</span> <span class="keywordtype">int</span> h2 = r.height() / 2;
00120
00121 <span class="keywordflow">switch</span>(d_style)
00122 {
00123 <span class="keywordflow">case</span> QwtSymbol::Ellipse:
00124 <a class="code" href="class_qwt_painter.html#e15">QwtPainter::drawEllipse</a>(painter, r);
00125 <span class="keywordflow">break</span>;
00126 <span class="keywordflow">case</span> QwtSymbol::Rect:
00127 <a class="code" href="class_qwt_painter.html#e12">QwtPainter::drawRect</a>(painter, r);
00128 <span class="keywordflow">break</span>;
00129 <span class="keywordflow">case</span> QwtSymbol::Diamond:
00130 {
00131 QPointArray pa(4);
00132 pa.setPoint(0, r.x() + w2, r.y());
00133 pa.setPoint(1, r.right(), r.y() + h2);
00134 pa.setPoint(2, r.x() + w2, r.bottom());
00135 pa.setPoint(3, r.x(), r.y() + h2);
00136 <a class="code" href="class_qwt_painter.html#e18">QwtPainter::drawPolygon</a>(painter, pa);
00137 <span class="keywordflow">break</span>;
00138 }
00139 <span class="keywordflow">case</span> QwtSymbol::Cross:
00140 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(painter, r.x() + w2, r.y(),
00141 r.x() + w2, r.bottom());
00142 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(painter, r.x(), r.y() + h2,
00143 r.right(), r.y() + h2);
00144 <span class="keywordflow">break</span>;
00145 <span class="keywordflow">case</span> QwtSymbol::XCross:
00146 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(painter, r.left(), r.top(),
00147 r.right(), r.bottom());
00148 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(painter, r.left(), r.bottom(),
00149 r.right(), r.top());
00150 <span class="keywordflow">break</span>;
00151 <span class="keywordflow">case</span> QwtSymbol::Triangle:
00152 <span class="keywordflow">case</span> QwtSymbol::UTriangle:
00153 {
00154 QPointArray pa(3);
00155 pa.setPoint(0, r.x() + w2, r.y());
00156 pa.setPoint(1, r.right(), r.bottom());
00157 pa.setPoint(2, r.x(), r.bottom());
00158 <a class="code" href="class_qwt_painter.html#e18">QwtPainter::drawPolygon</a>(painter, pa);
00159 <span class="keywordflow">break</span>;
00160 }
00161 <span class="keywordflow">case</span> QwtSymbol::DTriangle:
00162 {
00163 QPointArray pa(3);
00164 pa.setPoint(0, r.x(), r.y());
00165 pa.setPoint(1, r.right(), r.y());
00166 pa.setPoint(2, r.x() + w2, r.bottom());
00167 <a class="code" href="class_qwt_painter.html#e18">QwtPainter::drawPolygon</a>(painter, pa);
00168 <span class="keywordflow">break</span>;
00169 }
00170 <span class="keywordflow">case</span> QwtSymbol::RTriangle:
00171 {
00172 QPointArray pa(3);
00173 pa.setPoint(0, r.x(), r.y());
00174 pa.setPoint(1, r.right(), r.y() + h2);
00175 pa.setPoint(2, r.x(), r.bottom());
00176 <a class="code" href="class_qwt_painter.html#e18">QwtPainter::drawPolygon</a>(painter, pa);
00177 <span class="keywordflow">break</span>;
00178 }
00179 <span class="keywordflow">case</span> QwtSymbol::LTriangle:
00180 {
00181 QPointArray pa(3);
00182 pa.setPoint(0, r.right(), r.y());
00183 pa.setPoint(1, r.x(), r.y() + h2);
00184 pa.setPoint(2, r.right(), r.bottom());
00185 <a class="code" href="class_qwt_painter.html#e18">QwtPainter::drawPolygon</a>(painter, pa);
00186 <span class="keywordflow">break</span>;
00187 }
00188 <span class="keywordflow">default</span>:;
00189 }
00190 }
00191
<a name="l00198"></a><a class="code" href="class_qwt_symbol.html#a14">00198</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a14">QwtSymbol::draw</a>(QPainter *painter, <span class="keyword">const</span> QPoint &pos)<span class="keyword"> const</span>
00199 <span class="keyword"></span>{
00200 QRect rect;
00201 rect.setSize(QwtPainter::metricsMap().screenToLayout(d_size));
00202 rect.moveCenter(pos);
00203
00204 painter->setBrush(d_brush);
00205 painter->setPen(d_pen);
00206
00207 <a class="code" href="class_qwt_symbol.html#a14">draw</a>(painter, rect);
00208 }
00209
<a name="l00227"></a><a class="code" href="class_qwt_symbol.html#a9">00227</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_symbol.html#a9">QwtSymbol::setStyle</a>(QwtSymbol::Style s)
00228 {
00229 d_style = s;
00230 }
00231
<a name="l00233"></a><a class="code" href="class_qwt_symbol.html#a4">00233</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_symbol.html#a4">QwtSymbol::operator==</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_symbol.html">QwtSymbol</a> &other)<span class="keyword"> const</span>
00234 <span class="keyword"></span>{
00235 <span class="keywordflow">return</span> <a class="code" href="class_qwt_symbol.html#a10">brush</a>() == other.<a class="code" href="class_qwt_symbol.html#a10">brush</a>() && <a class="code" href="class_qwt_symbol.html#a11">pen</a>() == other.<a class="code" href="class_qwt_symbol.html#a11">pen</a>()
00236 && <a class="code" href="class_qwt_symbol.html#a13">style</a>() == other.<a class="code" href="class_qwt_symbol.html#a13">style</a>() && <a class="code" href="class_qwt_symbol.html#a12">size</a>() == other.<a class="code" href="class_qwt_symbol.html#a12">size</a>();
00237 }
00238
<a name="l00240"></a><a class="code" href="class_qwt_symbol.html#a3">00240</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_symbol.html#a3">QwtSymbol::operator!=</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_symbol.html">QwtSymbol</a> &other)<span class="keyword"> const</span>
00241 <span class="keyword"></span>{
00242 <span class="keywordflow">return</span> !(*<span class="keyword">this</span> == other);
00243 }
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