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<h1>qwt_plot_rescaler.h</h1> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="preprocessor">#ifndef QWT_PLOT_RESCALER_H</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_PLOT_RESCALER_H 1</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span>
<a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_global.h"</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include "qwt_double_rect.h"</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_double_interval.h"</span>
<a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_plot.h"</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <qobject.h></span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="keyword">class </span><a class="code" href="class_qwt_plot_canvas.html" title="Canvas of a QwtPlot.">QwtPlotCanvas</a>;
<a name="l00020"></a>00020 <span class="keyword">class </span>QResizeEvent;
<a name="l00021"></a>00021
<a name="l00029"></a><a class="code" href="class_qwt_plot_rescaler.html">00029</a> <span class="keyword">class </span>QWT_EXPORT <a class="code" href="class_qwt_plot_rescaler.html" title="QwtPlotRescaler takes care of fixed aspect ratios for plot scales.">QwtPlotRescaler</a>: <span class="keyword">public</span> QObject
<a name="l00030"></a>00030 {
<a name="l00031"></a>00031 <span class="keyword">public</span>:
<a name="l00058"></a><a class="code" href="class_qwt_plot_rescaler.html#a6a614b832876a7641cb5410ba81d9d6a">00058</a> <span class="keyword">enum</span> <a class="code" href="class_qwt_plot_rescaler.html#a6a614b832876a7641cb5410ba81d9d6a" title="Rescale Policy.">RescalePolicy</a>
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 Fixed,
<a name="l00061"></a>00061 Expanding,
<a name="l00062"></a>00062 Fitting
<a name="l00063"></a>00063 };
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">enum</span> ExpandingDirection
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 ExpandUp,
<a name="l00068"></a>00068 ExpandDown,
<a name="l00069"></a>00069 ExpandBoth
<a name="l00070"></a>00070 };
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keyword">explicit</span> <a class="code" href="class_qwt_plot_rescaler.html" title="QwtPlotRescaler takes care of fixed aspect ratios for plot scales.">QwtPlotRescaler</a>(<a class="code" href="class_qwt_plot_canvas.html" title="Canvas of a QwtPlot.">QwtPlotCanvas</a> *,
<a name="l00073"></a>00073 <span class="keywordtype">int</span> referenceAxis = QwtPlot::xBottom,
<a name="l00074"></a>00074 RescalePolicy = Expanding );
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keyword">virtual</span> ~<a class="code" href="class_qwt_plot_rescaler.html" title="QwtPlotRescaler takes care of fixed aspect ratios for plot scales.">QwtPlotRescaler</a>();
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordtype">void</span> setEnabled(<span class="keywordtype">bool</span>);
<a name="l00079"></a>00079 <span class="keywordtype">bool</span> isEnabled() <span class="keyword">const</span>;
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span> setRescalePolicy(RescalePolicy);
<a name="l00082"></a>00082 RescalePolicy rescalePolicy() <span class="keyword">const</span>;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keywordtype">void</span> setExpandingDirection(ExpandingDirection);
<a name="l00085"></a>00085 <span class="keywordtype">void</span> setExpandingDirection(<span class="keywordtype">int</span> axis, ExpandingDirection);
<a name="l00086"></a>00086 ExpandingDirection expandingDirection(<span class="keywordtype">int</span> axis) <span class="keyword">const</span>;
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="keywordtype">void</span> setReferenceAxis(<span class="keywordtype">int</span> axis);
<a name="l00089"></a>00089 <span class="keywordtype">int</span> referenceAxis() <span class="keyword">const</span>;
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keywordtype">void</span> setAspectRatio(<span class="keywordtype">double</span> ratio);
<a name="l00092"></a>00092 <span class="keywordtype">void</span> setAspectRatio(<span class="keywordtype">int</span> axis, <span class="keywordtype">double</span> ratio);
<a name="l00093"></a>00093 <span class="keywordtype">double</span> aspectRatio(<span class="keywordtype">int</span> axis) <span class="keyword">const</span>;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordtype">void</span> setIntervalHint(<span class="keywordtype">int</span> axis, <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a>&);
<a name="l00096"></a>00096 <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> intervalHint(<span class="keywordtype">int</span> axis) <span class="keyword">const</span>;
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <a class="code" href="class_qwt_plot_canvas.html" title="Canvas of a QwtPlot.">QwtPlotCanvas</a> *canvas();
<a name="l00099"></a>00099 <span class="keyword">const</span> <a class="code" href="class_qwt_plot_canvas.html" title="Canvas of a QwtPlot.">QwtPlotCanvas</a> *canvas() <span class="keyword">const</span>;
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <a class="code" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> *plot();
<a name="l00102"></a>00102 <span class="keyword">const</span> <a class="code" href="class_qwt_plot.html" title="A 2-D plotting widget.">QwtPlot</a> *plot() <span class="keyword">const</span>;
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> eventFilter(QObject *, QEvent *);
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordtype">void</span> rescale() <span class="keyword">const</span>;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keyword">protected</span>:
<a name="l00109"></a>00109 <span class="keyword">virtual</span> <span class="keywordtype">void</span> canvasResizeEvent(QResizeEvent *);
<a name="l00110"></a>00110
<a name="l00111"></a>00111 <span class="keyword">virtual</span> <span class="keywordtype">void</span> rescale(<span class="keyword">const</span> QSize &oldSize, <span class="keyword">const</span> QSize &newSize) <span class="keyword">const</span>;
<a name="l00112"></a>00112 <span class="keyword">virtual</span> <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> expandScale( <span class="keywordtype">int</span> axis,
<a name="l00113"></a>00113 <span class="keyword">const</span> QSize &oldSize, <span class="keyword">const</span> QSize &newSize) <span class="keyword">const</span>;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keyword">virtual</span> <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> syncScale(
<a name="l00116"></a>00116 <span class="keywordtype">int</span> axis, <span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a>& reference,
<a name="l00117"></a>00117 <span class="keyword">const</span> QSize &size) <span class="keyword">const</span>;
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keyword">virtual</span> <span class="keywordtype">void</span> updateScales(
<a name="l00120"></a>00120 <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> intervals[QwtPlot::axisCnt]) <span class="keyword">const</span>;
<a name="l00121"></a>00121
<a name="l00122"></a>00122 Qt::Orientation orientation(<span class="keywordtype">int</span> axis) <span class="keyword">const</span>;
<a name="l00123"></a>00123 <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> interval(<span class="keywordtype">int</span> axis) <span class="keyword">const</span>;
<a name="l00124"></a>00124 <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> expandInterval(<span class="keyword">const</span> <a class="code" href="class_qwt_double_interval.html" title="A class representing an interval.">QwtDoubleInterval</a> &,
<a name="l00125"></a>00125 <span class="keywordtype">double</span> width, ExpandingDirection) <span class="keyword">const</span>;
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">private</span>:
<a name="l00128"></a>00128 <span class="keywordtype">double</span> pixelDist(<span class="keywordtype">int</span> axis, <span class="keyword">const</span> QSize &) <span class="keyword">const</span>;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keyword">class </span>AxisData;
<a name="l00131"></a>00131 <span class="keyword">class </span>PrivateData;
<a name="l00132"></a>00132 PrivateData *d_data;
<a name="l00133"></a>00133 };
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="preprocessor">#endif</span>
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