1999-01-13 22:28:54 +03:00
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2001-11-28 21:00:17 +03:00
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<!-- NEW PAGE -->
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1999-01-13 22:28:54 +03:00
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<H2><A name=Fl_Chart>class Fl_Chart</A></H2>
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<HR>
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<H3>Class Hierarchy</H3>
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<UL>
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<PRE>
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<A href=Fl_Widget.html#Fl_Widget>Fl_Widget</A>
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1998-12-29 17:21:17 +03:00
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1999-01-13 22:28:54 +03:00
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+----<B>Fl_Chart</B>
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</PRE>
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</UL>
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<H3>Include Files</H3>
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<UL>
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<PRE>
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#include <FL/Fl_Chart.H>
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</PRE>
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</UL>
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<H3>Description</H3>
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This widget displays simple charts and is provided for Forms compatibility.
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<CENTER><IMG src="charts.gif" width="80%" alt="Fl_Chart widget"></CENTER>
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<H3>Methods</H3>
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<CENTER>
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<TABLE width=90% summary="Fl_Chart methods.">
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<TR><TD align=left valign=top>
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<UL>
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<LI><A href=#Fl_Chart.Fl_Chart>Fl_Chart</A></LI>
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<LI><A href=#Fl_Chart.~Fl_Chart>~Fl_Chart</A></LI>
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<LI><A href=#Fl_Chart.add>add</A></LI>
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</UL>
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</TD><TD align=left valign=top>
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<UL>
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<LI><A href=#Fl_Chart.autosize>autosize</A></LI>
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<LI><A href=#Fl_Chart.bounds>bounds</A></LI>
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</UL>
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</TD><TD align=left valign=top>
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<UL>
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<LI><A href=#Fl_Chart.clear>clear</A></LI>
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<LI><A href=#Fl_Chart.insert>insert</A></LI>
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</UL>
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</TD><TD align=left valign=top>
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<UL>
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<LI><A href=#Fl_Chart.maxsize>maxsize</A></LI>
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<LI><A href=#Fl_Chart.replace>replace</A></LI>
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</UL>
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</TD><TD align=left valign=top>
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<UL>
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<LI><A href=#Fl_Chart.size>size</A></LI>
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<LI><A href=#Fl_Chart.type>type</A></LI>
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</UL>
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</TD></TR>
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</TABLE>
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</CENTER>
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<H4><A name=Fl_Chart.Fl_Chart>Fl_Chart::Fl_Chart(int x, int y, int w,
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int h, const char *label = 0)</A></H4>
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Creates a new <TT>Fl_Chart</TT> widget using the given position, size,
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and label string. The default boxtype is <TT>FL_NO_BOX</TT>.
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<H4><A name=Fl_Chart.~Fl_Chart>virtual Fl_Chart::~Fl_Chart()</A></H4>
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Destroys the <TT>Fl_Chart</TT> widget and all of its data.
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<H4><A name=Fl_Chart.add>void add(double value, const char *label =
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NULL, uchar color = 0)</A></H4>
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The <TT>add</TT> method adds the <TT>value</TT> and optionally <TT>
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label</TT> and <TT>color</TT> to the chart.
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<H4><A name=Fl_Chart.autosize>uchar autosize(void) const
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<BR> void autosize(uchar onoff)</A></H4>
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The <TT>autosize</TT> method controls whether or not the chart will
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automatically adjust the bounds of the chart. The first form returns a
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boolean value that is non-zero if auto-sizing is enabled and zero is
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auto-sizing is disabled.
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<P>The second form of <TT>autosize</TT> sets the auto-sizing property
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to <TT>onoff</TT>. </P>
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<H4><A name=Fl_Chart.bounds>void bounds(double *a, double *b)
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<BR> void bounds(double a, double b)</A></H4>
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The <TT>bounds</TT> method gets or sets the lower and upper bounds of
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the chart values to <TT>a</TT> and <TT>b</TT> respectively.
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<H4><A name=Fl_Chart.clear>void clear(void)</A></H4>
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The <TT>clear</TT> method removes all values from the chart.
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<H4><A name=Fl_Chart.insert>void insert(int pos, double value, const
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char *label = NULL, uchar color = 0)</A></H4>
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The <TT>insert</TT> method inserts a data value at the given position <TT>
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pos</TT>. Position 0 is the first data value.
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<H4><A name=Fl_Chart.maxsize>int maxsize(void) const
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<BR> void maxsize(int n)</A></H4>
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The <TT>maxsize</TT> method gets or sets the maximum number of data
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values for a chart. If you do not call this method then the chart will
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be allowed to grow to any size depending on available memory.
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<H4><A name=Fl_Chart.replace>void replace(int pos, double value, const
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char *label = NULL, uchar color = 0)</A></H4>
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The <TT>replace</TT> method replaces data value <TT>pos</TT> with <TT>
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value</TT>, <TT>label</TT>, and <TT>color</TT>. Position 0 is the
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first data value.
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<H4><A name=Fl_Chart.size>int size(void) const</A></H4>
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The <TT>size</TT> method returns the number of data values in the
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chart.
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<H4><A name=Fl_Chart.type>uchar type() const
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<BR> void type(uchar t)</A></H4>
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The first form of <TT>type()</TT> returns the current chart type. The
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chart type can be one of the following:
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<DL>
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<DT>FL_BAR_CHART</DT>
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<DD>Each sample value is drawn as a vertical bar.</DD>
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<DT>FL_FILLED_CHART</DT>
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<DD>The chart is filled from the bottom of the graph to the sample
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values.</DD>
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<DT>FL_HORBAR_CHART</DT>
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<DD>Each sample value is drawn as a horizontal bar.</DD>
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<DT>FL_LINE_CHART</DT>
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<DD>The chart is drawn as a polyline with vertices at each sample
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value.</DD>
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<DT>FL_PIE_CHART</DT>
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<DD>A pie chart is drawn with each sample value being drawn as a
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proportionate slice in the circle.</DD>
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<DT>FL_SPECIALPIE_CHART</DT>
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<DD>Like FL_PIE_CHART, but the first slice is separated from the pie.</DD>
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<DT>FL_SPIKE_CHART</DT>
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<DD>Each sample value is drawn as a vertical line.</DD>
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</DL>
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The second form of <TT>type()</TT> sets the chart type to <TT>t</TT>.
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