class Fl_Chart

Class Hierarchy

Include Files

Description

This widget displays simple charts and is provided for Forms compatibility.

Methods

Fl_Chart::Fl_Chart(int x, int y, int w, int h, const char *label = 0)

Creates a new Fl_Chart widget using the given position, size, and label string. The default boxtype is FL_NO_BOX.

virtual Fl_Chart::~Fl_Chart()

Destroys the Fl_Chart widget and all of its data.

void add(double value, const char *label = NULL, uchar color = 0)

The add method adds the value and optionally label and color to the chart.

uchar autosize(void) const
void autosize(uchar onoff)

The autosize 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.

The second form of autosize sets the auto-sizing property to onoff.

void bounds(double *a, double *b)
void bounds(double a, double b)

The bounds method gets or sets the lower and upper bounds of the chart values to a and b respectively.

void clear(void)

The clear method removes all values from the chart.

void insert(int pos, double value, const char *label = NULL, uchar color = 0)

The insert method inserts a data value at the given position pos. Position 0 is the first data value.

int maxsize(void) const
void maxsize(int n)

The maxsize 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.

void replace(int pos, double value, const char *label = NULL, uchar color = 0)

The replace method replaces data value pos with value, label, and color. Position 0 is the first data value.

int size(void) const

The size method returns the number of data values in the chart.

uchar type() const
void type(uchar t)

The first form of type() returns the current chart type. The chart type can be one of the following:
FL_BAR_CHART
Each sample value is drawn as a vertical bar.
FL_FILLED_CHART
The chart is filled from the bottom of the graph to the sample values.
FL_HORBAR_CHART
Each sample value is drawn as a horizontal bar.
FL_LINE_CHART
The chart is drawn as a polyline with vertices at each sample value.
FL_PIE_CHART
A pie chart is drawn with each sample value being drawn as a proportionate slice in the circle.
FL_SPECIALPIE_CHART
Like FL_PIE_CHART, but the first slice is separated from the pie.
FL_SPIKE_CHART
Each sample value is drawn as a vertical line.
The second form of type() sets the chart type to t.