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Cairo-Chart
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Marker.vala created #1

This commit is contained in:
Kolan Sh 2018-01-10 11:32:51 +03:00
parent 94ed3ecabb
commit 6e577891ae
3 changed files with 60 additions and 46 deletions
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46
src/Chart.vala
View File

@ -212,50 +212,6 @@ namespace CairoChart {
public double marker_size = 8.0; public double marker_size = 8.0;
public virtual void draw_marker_at_pos (Series.MarkerType marker_type,
double x, double y) {
context.move_to (x, y);
switch (marker_type) {
case Series.MarkerType.SQUARE:
context.rectangle (x - marker_size / 2, y - marker_size / 2,
marker_size, marker_size);
context.fill();
break;
case Series.MarkerType.CIRCLE:
context.arc (x, y, marker_size / 2, 0, 2*Math.PI);
context.fill();
break;
case Series.MarkerType.TRIANGLE:
context.move_to (x - marker_size / 2, y - marker_size / 2);
context.line_to (x + marker_size / 2, y - marker_size / 2);
context.line_to (x, y + marker_size / 2);
context.line_to (x - marker_size / 2, y - marker_size / 2);
context.fill();
break;
case Series.MarkerType.PRICLE_SQUARE:
context.rectangle (x - marker_size / 2, y - marker_size / 2,
marker_size, marker_size);
context.stroke();
break;
case Series.MarkerType.PRICLE_CIRCLE:
context.arc (x, y, marker_size / 2, 0, 2*Math.PI);
context.stroke();
break;
case Series.MarkerType.PRICLE_TRIANGLE:
context.move_to (x - marker_size / 2, y - marker_size / 2);
context.line_to (x + marker_size / 2, y - marker_size / 2);
context.line_to (x, y + marker_size / 2);
context.line_to (x - marker_size / 2, y - marker_size / 2);
context.stroke();
break;
}
}
public Line.Style selection_style = Line.Style (); public Line.Style selection_style = Line.Style ();
public virtual void draw_selection (double x0, double y0, double x1, double y1) { public virtual void draw_selection (double x0, double y0, double x1, double y1) {
@ -994,7 +950,7 @@ namespace CairoChart {
var x = get_scr_x(s, points[i].x); var x = get_scr_x(s, points[i].x);
var y = get_scr_y(s, points[i].y); var y = get_scr_y(s, points[i].y);
if (point_in_plot_area (Point (x, y))) if (point_in_plot_area (Point (x, y)))
draw_marker_at_pos(s.marker_type, x, y); Marker.draw_at_pos(this, s.marker_type, x, y, marker_size);
} }
} }
} }

6
src/Legend.vala
View File

@ -152,7 +152,11 @@ namespace CairoChart {
s.line_style.set(chart); s.line_style.set(chart);
chart.context.rel_line_to (line_length, 0); chart.context.rel_line_to (line_length, 0);
chart.context.stroke(); chart.context.stroke();
chart.draw_marker_at_pos (s.marker_type, x + line_length / 2, y - title_sz.height / 2); Marker.draw_at_pos (chart,
s.marker_type,
x + line_length / 2,
y - title_sz.height / 2,
chart.marker_size);
break; break;
} }

54
src/Marker.vala Normal file
View File

@ -0,0 +1,54 @@
namespace CairoChart {
public class Marker {
public static void draw_at_pos (Chart chart,
Series.MarkerType marker_type,
double x,
double y,
double marker_size = 8.0) {
chart.context.move_to (x, y);
switch (marker_type) {
case Series.MarkerType.SQUARE:
chart.context.rectangle (x - marker_size / 2, y - marker_size / 2,
marker_size, marker_size);
chart.context.fill();
break;
case Series.MarkerType.CIRCLE:
chart.context.arc (x, y, marker_size / 2, 0, 2*Math.PI);
chart.context.fill();
break;
case Series.MarkerType.TRIANGLE:
chart.context.move_to (x - marker_size / 2, y - marker_size / 2);
chart.context.line_to (x + marker_size / 2, y - marker_size / 2);
chart.context.line_to (x, y + marker_size / 2);
chart.context.line_to (x - marker_size / 2, y - marker_size / 2);
chart.context.fill();
break;
case Series.MarkerType.PRICLE_SQUARE:
chart.context.rectangle (x - marker_size / 2, y - marker_size / 2,
marker_size, marker_size);
chart.context.stroke();
break;
case Series.MarkerType.PRICLE_CIRCLE:
chart.context.arc (x, y, marker_size / 2, 0, 2*Math.PI);
chart.context.stroke();
break;
case Series.MarkerType.PRICLE_TRIANGLE:
chart.context.move_to (x - marker_size / 2, y - marker_size / 2);
chart.context.line_to (x + marker_size / 2, y - marker_size / 2);
chart.context.line_to (x, y + marker_size / 2);
chart.context.line_to (x - marker_size / 2, y - marker_size / 2);
chart.context.stroke();
break;
}
}
}
}