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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Qwt User's Guide: qwt_grid.cpp Source File</title>
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<h1>qwt_grid.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 "qwt_painter.h"</span>
00012 <span class="preprocessor">#include "qwt_grid.h"</span>
00013
<a name="l00015"></a><a class="code" href="class_qwt_grid.html#a0">00015</a> <a class="code" href="class_qwt_grid.html#a0">QwtGrid::QwtGrid</a>()
00016 {
00017 d_xMinEnabled = FALSE;
00018 d_yMinEnabled = FALSE;
00019 d_xEnabled = TRUE;
00020 d_yEnabled = TRUE;
00021 }
00022
<a name="l00024"></a><a class="code" href="class_qwt_grid.html#a1">00024</a> <a class="code" href="class_qwt_grid.html#a1">QwtGrid::~QwtGrid</a>()
00025 {
00026 }
00027
<a name="l00035"></a><a class="code" href="class_qwt_grid.html#a3">00035</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a3">QwtGrid::enableX</a>(<span class="keywordtype">bool</span> tf)
00036 {
00037 <span class="keywordflow">if</span> ( d_xEnabled != tf )
00038 {
00039 d_xEnabled = tf;
00040 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00041 }
00042 }
00043
<a name="l00049"></a><a class="code" href="class_qwt_grid.html#a5">00049</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a5">QwtGrid::enableY</a>(<span class="keywordtype">bool</span> tf)
00050 {
00051 <span class="keywordflow">if</span> ( d_yEnabled != tf )
00052 {
00053 d_yEnabled = tf;
00054 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00055 }
00056 }
00057
<a name="l00063"></a><a class="code" href="class_qwt_grid.html#a7">00063</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a7">QwtGrid::enableXMin</a>(<span class="keywordtype">bool</span> tf)
00064 {
00065 <span class="keywordflow">if</span> ( d_xMinEnabled != tf )
00066 {
00067 d_xMinEnabled = tf;
00068 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00069 }
00070 }
00071
<a name="l00077"></a><a class="code" href="class_qwt_grid.html#a9">00077</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a9">QwtGrid::enableYMin</a>(<span class="keywordtype">bool</span> tf)
00078 {
00079 <span class="keywordflow">if</span> ( d_yMinEnabled != tf )
00080 {
00081 d_yMinEnabled = tf;
00082 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00083 }
00084 }
00085
<a name="l00093"></a><a class="code" href="class_qwt_grid.html#a11">00093</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a11">QwtGrid::setXDiv</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> &sx)
00094 {
00095 <span class="keywordflow">if</span> ( d_sdx != sx )
00096 {
00097 d_sdx = sx;
00098 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00099 }
00100 }
00101
<a name="l00109"></a><a class="code" href="class_qwt_grid.html#a13">00109</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a13">QwtGrid::setYDiv</a>(<span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> &sy)
00110 {
00111 <span class="keywordflow">if</span> ( d_sdy != sy )
00112 {
00113 d_sdy = sy;
00114 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00115 }
00116 }
00117
<a name="l00122"></a><a class="code" href="class_qwt_grid.html#a15">00122</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a15">QwtGrid::setPen</a>(<span class="keyword">const</span> QPen &p)
00123 {
00124 <span class="keywordflow">if</span> ( d_majPen != p || d_minPen != p )
00125 {
00126 d_majPen = p;
00127 d_minPen = p;
00128 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00129 }
00130 }
00131
<a name="l00136"></a><a class="code" href="class_qwt_grid.html#a16">00136</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a16">QwtGrid::setMajPen</a>(<span class="keyword">const</span> QPen &p)
00137 {
00138 <span class="keywordflow">if</span> ( d_majPen != p )
00139 {
00140 d_majPen = p;
00141 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00142 }
00143 }
00144
<a name="l00149"></a><a class="code" href="class_qwt_grid.html#a18">00149</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a18">QwtGrid::setMinPen</a>(<span class="keyword">const</span> QPen &p)
00150 {
00151 <span class="keywordflow">if</span> ( d_minPen != p )
00152 {
00153 d_minPen = p;
00154 <a class="code" href="class_qwt_grid.html#b0">gridChanged</a>();
00155 }
00156 }
00157
<a name="l00170"></a><a class="code" href="class_qwt_grid.html#a2">00170</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#a2">QwtGrid::draw</a>(QPainter *p, <span class="keyword">const</span> QRect &r,
00171 <span class="keyword">const</span> <a class="code" href="class_qwt_di_map.html">QwtDiMap</a> &mx, <span class="keyword">const</span> <a class="code" href="class_qwt_di_map.html">QwtDiMap</a> &my)<span class="keyword"> const</span>
00172 <span class="keyword"></span>{
00173 <span class="keywordtype">int</span> x1 = r.left();
00174 <span class="keywordtype">int</span> x2 = r.right();
00175 <span class="keywordtype">int</span> y1 = r.top();
00176 <span class="keywordtype">int</span> y2 = r.bottom();
00177
00178 <span class="comment">//</span>
00179 <span class="comment">// draw minor gridlines</span>
00180 <span class="comment">//</span>
00181 p->setPen(d_minPen);
00182
00183 <span class="keywordflow">if</span> (d_xEnabled && d_xMinEnabled)
00184 {
00185 <span class="keywordflow">for</span> (uint i = 0; i < d_sdx.<a class="code" href="class_qwt_scale_div.html#a5">minCnt</a>(); i++)
00186 {
00187 <span class="keyword">const</span> <span class="keywordtype">int</span> x = mx.<a class="code" href="class_qwt_di_map.html#a7">transform</a>(d_sdx.<a class="code" href="class_qwt_scale_div.html#a9">minMark</a>(i));
00188 <span class="keywordflow">if</span> ((x >= x1) && (x <= x2))
00189 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, x, y1, x, y2);
00190 }
00191 }
00192
00193 <span class="keywordflow">if</span> (d_yEnabled && d_yMinEnabled)
00194 {
00195 <span class="keywordflow">for</span> (uint i = 0; i < d_sdy.<a class="code" href="class_qwt_scale_div.html#a5">minCnt</a>(); i++)
00196 {
00197 <span class="keyword">const</span> <span class="keywordtype">int</span> y = my.<a class="code" href="class_qwt_di_map.html#a7">transform</a>(d_sdy.<a class="code" href="class_qwt_scale_div.html#a9">minMark</a>(i));
00198 <span class="keywordflow">if</span> ((y >= y1) && (y <= y2))
00199 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, x1, y, x2, y);
00200 }
00201 }
00202
00203 <span class="comment">//</span>
00204 <span class="comment">// draw major gridlines</span>
00205 <span class="comment">//</span>
00206 p->setPen(d_majPen);
00207
00208 <span class="keywordflow">if</span> (d_xEnabled)
00209 {
00210 <span class="keywordflow">for</span> (uint i = 0; i < d_sdx.<a class="code" href="class_qwt_scale_div.html#a6">majCnt</a>(); i++)
00211 {
00212 <span class="keyword">const</span> <span class="keywordtype">int</span> x = mx.<a class="code" href="class_qwt_di_map.html#a7">transform</a>(d_sdx.<a class="code" href="class_qwt_scale_div.html#a8">majMark</a>(i));
00213 <span class="keywordflow">if</span> ((x >= x1) && (x <= x2))
00214 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, x, y1, x, y2);
00215 }
00216
00217 }
00218
00219 <span class="keywordflow">if</span> (d_yEnabled)
00220 {
00221 <span class="keywordflow">for</span> (uint i = 0; i < d_sdy.<a class="code" href="class_qwt_scale_div.html#a6">majCnt</a>(); i++)
00222 {
00223 <span class="keyword">const</span> <span class="keywordtype">int</span> y = my.<a class="code" href="class_qwt_di_map.html#a7">transform</a>(d_sdy.<a class="code" href="class_qwt_scale_div.html#a8">majMark</a>(i));
00224 <span class="keywordflow">if</span> ((y >= y1) && (y <= y2))
00225 <a class="code" href="class_qwt_painter.html#e16">QwtPainter::drawLine</a>(p, x1, y, x2, y);
00226 }
00227 }
00228 }
00229
<a name="l00234"></a><a class="code" href="class_qwt_grid.html#a17">00234</a> <span class="keyword">const</span> QPen &<a class="code" href="class_qwt_grid.html#a17">QwtGrid::majPen</a>()<span class="keyword"> const </span>
00235 <span class="keyword"></span>{
00236 <span class="keywordflow">return</span> d_majPen;
00237 }
00238
<a name="l00243"></a><a class="code" href="class_qwt_grid.html#a19">00243</a> <span class="keyword">const</span> QPen &<a class="code" href="class_qwt_grid.html#a19">QwtGrid::minPen</a>()<span class="keyword"> const </span>
00244 <span class="keyword"></span>{
00245 <span class="keywordflow">return</span> d_minPen;
00246 }
00247
<a name="l00252"></a><a class="code" href="class_qwt_grid.html#a4">00252</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_grid.html#a4">QwtGrid::xEnabled</a>()<span class="keyword"> const</span>
00253 <span class="keyword"></span>{
00254 <span class="keywordflow">return</span> d_xEnabled;
00255 }
00256
<a name="l00261"></a><a class="code" href="class_qwt_grid.html#a8">00261</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_grid.html#a8">QwtGrid::xMinEnabled</a>()<span class="keyword"> const </span>
00262 <span class="keyword"></span>{
00263 <span class="keywordflow">return</span> d_xMinEnabled;
00264 }
00265
<a name="l00270"></a><a class="code" href="class_qwt_grid.html#a6">00270</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_grid.html#a6">QwtGrid::yEnabled</a>()<span class="keyword"> const </span>
00271 <span class="keyword"></span>{
00272 <span class="keywordflow">return</span> d_yEnabled;
00273 }
00274
<a name="l00279"></a><a class="code" href="class_qwt_grid.html#a10">00279</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_grid.html#a10">QwtGrid::yMinEnabled</a>()<span class="keyword"> const </span>
00280 <span class="keyword"></span>{
00281 <span class="keywordflow">return</span> d_yMinEnabled;
00282 }
00283
00284
<a name="l00286"></a><a class="code" href="class_qwt_grid.html#a12">00286</a> <span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> &<a class="code" href="class_qwt_grid.html#a12">QwtGrid::xScaleDiv</a>()<span class="keyword"> const </span>
00287 <span class="keyword"></span>{
00288 <span class="keywordflow">return</span> d_sdx;
00289 }
00290
<a name="l00292"></a><a class="code" href="class_qwt_grid.html#a14">00292</a> <span class="keyword">const</span> <a class="code" href="class_qwt_scale_div.html">QwtScaleDiv</a> &<a class="code" href="class_qwt_grid.html#a14">QwtGrid::yScaleDiv</a>()<span class="keyword"> const </span>
00293 <span class="keyword"></span>{
00294 <span class="keywordflow">return</span> d_sdy;
00295 }
00296
<a name="l00304"></a><a class="code" href="class_qwt_grid.html#b0">00304</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_grid.html#b0">QwtGrid::gridChanged</a>()
00305 {
00306 }
00307
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