90 lines
2.3 KiB
Vala
90 lines
2.3 KiB
Vala
using Cairo;
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namespace CairoChart {
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public class Series {
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public Point[] points = {};
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public enum Sort {
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BY_X = 0,
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BY_Y = 1,
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UNSORTED
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}
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public Sort sort = Sort.BY_X;
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public Axis axis_x = new Axis();
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public Axis axis_y = new Axis();
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public Place place = new Place();
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public Text title = new Text ();
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public Marker marker = new Marker ();
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public Grid grid = new Grid ();
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public Line.Style line_style = Line.Style ();
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protected Color _color = Color (0.0, 0.0, 0.0, 1.0);
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public Color color {
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get { return _color; }
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set {
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_color = value;
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line_style.color = _color;
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axis_x.color = _color;
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axis_y.color = _color;
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grid.color = _color;
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grid.color.alpha = 0.5;
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grid.line_style.color = _color;
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grid.line_style.color.alpha = 0.5;
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}
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default = Color (0.0, 0.0, 0.0, 1.0);
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}
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public bool zoom_show = true;
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public virtual Series copy () {
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var series = new Series ();
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series._color = this._color;
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series.axis_x = this.axis_x.copy ();
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series.axis_y = this.axis_y.copy ();
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series.grid = this.grid.copy ();
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series.line_style = this.line_style;
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series.marker = this.marker;
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series.place = this.place.copy();
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series.points = this.points;
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series.sort = this.sort;
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series.title = this.title.copy();
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series.zoom_show = this.zoom_show;
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return series;
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}
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public Series () {
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}
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public virtual void draw (Chart chart) {
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var points = chart.math.sort_points(this, sort);
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line_style.set(chart);
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// draw series line
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for (int i = 1; i < points.length; ++i) {
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Point c, d;
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if (chart.math.cut_line (
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Point(chart.plot_x_min, chart.plot_y_min),
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Point(chart.plot_x_max, chart.plot_y_max),
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Point(chart.get_scr_x(this, points[i - 1].x), chart.get_scr_y(this, points[i - 1].y)),
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Point(chart.get_scr_x(this, points[i].x), chart.get_scr_y(this, points[i].y)),
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out c, out d)
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) {
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chart.context.move_to (c.x, c.y);
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chart.context.line_to (d.x, d.y);
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}
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}
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chart.context.stroke();
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for (int i = 0; i < points.length; ++i) {
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var x = chart.get_scr_x(this, points[i].x);
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var y = chart.get_scr_y(this, points[i].y);
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if (chart.point_in_plot_area (Point (x, y)))
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marker.draw_at_pos(chart, x, y);
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}
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}
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}
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}
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