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Cairo-Chart
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This commit is contained in:
Kolan Sh 2018-01-22 16:54:54 +03:00
parent 491c303d4f
commit 4626587d45
2 changed files with 24 additions and 14 deletions
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6
src/Chart.vala
View File

@ -48,7 +48,7 @@ namespace CairoChart {
/**
* Legend.
*/
public Legend legend = new Legend();
public Legend legend;
/**
* ``Chart`` Series array.
@ -100,7 +100,7 @@ namespace CairoChart {
public Chart () {
cursors = new Cursors (this);
title = new Text(this, "Cairo Chart");
legend = new Legend(this);
}
/**
@ -147,7 +147,7 @@ namespace CairoChart {
draw_title ();
fix_evarea ();
legend.draw (this);
legend.draw ();
fix_evarea ();
rot_axes_titles ();

32
src/Legend.vala
View File

@ -5,6 +5,8 @@ namespace CairoChart {
*/
public class Legend {
Chart chart;
/**
* ``Legend`` position.
*/
@ -53,8 +55,20 @@ namespace CairoChart {
public double text_vspace = 2.0;
public bool show = true;
/**
* Constructs a new ``Legend``.
* @param chart ``Chart`` instance.
*/
public Legend (Chart chart) {
this.chart = chart;
border_style.color = Color (0, 0, 0, 0.3);
}
/**
* Gets a copy of the ``Legend``.
*/
public virtual Legend copy () {
var legend = new Legend ();
var legend = new Legend (chart);
legend.position = this.position;
legend.bg_color = this.bg_color;
legend.spacing = this.spacing;
@ -68,17 +82,13 @@ namespace CairoChart {
return legend;
}
public Legend () {
border_style.color = Color (0, 0, 0, 0.3);
}
public virtual void draw (Chart chart) {
public virtual void draw () {
if (!show) return;
process (chart, ProcessType.CALC);
process (chart, ProcessType.DRAW);
process (ProcessType.CALC);
process (ProcessType.DRAW);
}
public virtual void draw_rect (Chart chart, out double x0, out double y0) {
public virtual void draw_rect (out double x0, out double y0) {
x0 = y0 = 0.0;
if (chart.ctx != null) {
switch (position) {
@ -123,7 +133,7 @@ namespace CairoChart {
}
double [] max_font_heights;
public virtual void process (Chart chart, ProcessType process_type) {
public virtual void process (ProcessType process_type) {
var legend_x0 = 0.0, legend_y0 = 0.0;
var heights_idx = 0;
var leg_width_sum = 0.0;
@ -139,7 +149,7 @@ namespace CairoChart {
heights_idx = 0;
break;
case ProcessType.DRAW:
draw_rect(chart, out legend_x0, out legend_y0);
draw_rect(out legend_x0, out legend_y0);
break;
}