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