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Cairo-Chart
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Kolan Sh 2018-01-23 16:37:46 +03:00
parent 08e154ce6a
commit f844b70f26
1 changed files with 90 additions and 104 deletions
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src/Axis.vala
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@ -370,8 +370,8 @@ namespace CairoChart {
title.show(); title.show();
} }
if (is_x) draw_hrecs (step, max_rec_height, min); if (is_x) draw_recs (step, max_rec_height, min);
else draw_vrecs (step, max_rec_width, min); else draw_recs (step, max_rec_width, min);
chart.ctx.stroke (); chart.ctx.stroke ();
@ -495,26 +495,26 @@ namespace CairoChart {
} }
} }
protected virtual void draw_hrecs (Float128 step, double max_rec_height, Float128 x_min) { protected virtual void draw_recs (Float128 step, double max_rec_size, Float128 min) {
// 5. Draw records, update cur_{x,y}_{min,max}. // 5. Draw records, update cur_{x,y}_{min,max}.
var ctx = chart.ctx; var ctx = chart.ctx;
var joint_x = chart.joint_x;
for (Float128 x = x_min, x_max = range.zmax; Math.point_belong (x, x_min, x_max); x += step) { for (Float128 v = min, max = range.zmax; Math.point_belong (v, min, max); v += step) {
if (joint_x) chart.color = chart.joint_color; if (is_x && chart.joint_x || !is_x && chart.joint_y) chart.color = chart.joint_color;
else chart.color = color; else chart.color = color;
string text = "", time_text = ""; string text = "", time_text = "";
switch (dtype) { switch (dtype) {
case Axis.DType.NUMBERS: text = format.printf((LongDouble)x); break; case Axis.DType.NUMBERS: text = format.printf((LongDouble)v); break;
case Axis.DType.DATE_TIME: print_dt(x, out text, out time_text); break; case Axis.DType.DATE_TIME: print_dt(v, out text, out time_text); break;
} }
var scr_x = scr_pos (x); var scr_v = scr_pos (v);
var text_t = new Text(chart, text, font, color); var text_t = new Text(chart, text, font, color);
switch (position) { switch (position) {
case Axis.Position.LOW: case Axis.Position.LOW:
if (is_x) {
var print_y = chart.evarea.y1 - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing); var print_y = chart.evarea.y1 - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
var print_x = compact_rec_pos (x, text_t); var print_x = compact_rec_pos (v, text_t);
ctx.move_to (print_x, print_y); ctx.move_to (print_x, print_y);
switch (dtype) { switch (dtype) {
case Axis.DType.NUMBERS: case Axis.DType.NUMBERS:
@ -523,25 +523,43 @@ namespace CairoChart {
case Axis.DType.DATE_TIME: case Axis.DType.DATE_TIME:
if (date_format != "") text_t.show(); if (date_format != "") text_t.show();
var time_text_t = new Text(chart, time_text, font, color); var time_text_t = new Text(chart, time_text, font, color);
print_x = compact_rec_pos (x, time_text_t); print_x = compact_rec_pos (v, time_text_t);
ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing)); ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
if (time_format != "") time_text_t.show(); if (time_format != "") time_text_t.show();
break; break;
} }
// 6. Draw grid lines to the ser.axis_y.place.zmin. // 6. Draw grid lines to the ser.axis_y.place.zmin.
var grid_style = ser.grid.style; var grid_style = ser.grid.style;
if (joint_x) grid_style.color = Color(0, 0, 0, 0.5); if (chart.joint_x) grid_style.color = Color(0, 0, 0, 0.5);
grid_style.apply(chart); grid_style.apply(chart);
double y = chart.evarea.y1 - max_rec_height - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing); double y = chart.evarea.y1 - max_rec_size - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
ctx.move_to (scr_x, y); ctx.move_to (scr_v, y);
if (joint_x) if (chart.joint_x)
ctx.line_to (scr_x, chart.plarea.y0); ctx.line_to (scr_v, chart.plarea.y0);
else else
ctx.line_to (scr_x, double.min (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmax))); ctx.line_to (scr_v, double.min (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmax)));
break; break;
} else {
ctx.move_to (chart.evarea.x0 + max_rec_size - text_t.width + font.hspacing
+ (title.text == "" ? 0 : title.width + font.hspacing),
compact_rec_pos (v, text_t));
text_t.show();
// 6. Draw grid lines to the ser.axis_x.place.zmin.
var grid_style = ser.grid.style;
if (chart.joint_y) grid_style.color = Color(0, 0, 0, 0.5);
grid_style.apply(chart);
double x = chart.evarea.x0 + max_rec_size + font.hspacing + (title.text == "" ? 0 : title.width + font.hspacing);
ctx.move_to (x, scr_v);
if (chart.joint_y)
ctx.line_to (chart.plarea.x1, scr_v);
else
ctx.line_to (double.max (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmax), scr_v);
break;
}
case Axis.Position.HIGH: case Axis.Position.HIGH:
var print_y = chart.evarea.y0 + max_rec_height + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing); if (is_x) {
var print_x = compact_rec_pos (x, text_t); var print_y = chart.evarea.y0 + max_rec_size + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
var print_x = compact_rec_pos (v, text_t);
ctx.move_to (print_x, print_y); ctx.move_to (print_x, print_y);
switch (dtype) { switch (dtype) {
@ -551,73 +569,41 @@ namespace CairoChart {
case Axis.DType.DATE_TIME: case Axis.DType.DATE_TIME:
if (date_format != "") text_t.show(); if (date_format != "") text_t.show();
var time_text_t = new Text(chart, time_text, font, color); var time_text_t = new Text(chart, time_text, font, color);
print_x = compact_rec_pos (x, time_text_t); print_x = compact_rec_pos (v, time_text_t);
ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing)); ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
if (time_format != "") time_text_t.show(); if (time_format != "") time_text_t.show();
break; break;
} }
// 6. Draw grid lines to the ser.axis_y.place.zmax. // 6. Draw grid lines to the ser.axis_y.place.zmax.
var grid_style = ser.grid.style; var grid_style = ser.grid.style;
if (joint_x) grid_style.color = Color(0, 0, 0, 0.5); if (chart.joint_x) grid_style.color = Color(0, 0, 0, 0.5);
grid_style.apply(chart); grid_style.apply(chart);
double y = chart.evarea.y0 + max_rec_height + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing); double y = chart.evarea.y0 + max_rec_size + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
ctx.move_to (scr_x, y); ctx.move_to (scr_v, y);
if (joint_x) if (chart.joint_x)
ctx.line_to (scr_x, chart.plarea.y1); ctx.line_to (scr_v, chart.plarea.y1);
else else
ctx.line_to (scr_x, double.max (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmin))); ctx.line_to (scr_v, double.max (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmin)));
break; break;
} } else {
}
}
protected virtual void draw_vrecs (Float128 step, double max_rec_width, Float128 y_min) {
// 5. Draw records, update cur_{x,y}_{min,max}.
var ctx = chart.ctx;
var joint_y = chart.joint_y;
for (Float128 y = y_min, y_max = range.zmax; Math.point_belong (y, y_min, y_max); y += step) {
if (joint_y) chart.color = chart.joint_color;
else chart.color = color;
var text = format.printf((LongDouble)y);
var scr_y = scr_pos (y);
var text_t = new Text(chart, text, font, color);
switch (position) {
case Axis.Position.LOW:
ctx.move_to (chart.evarea.x0 + max_rec_width - text_t.width + font.hspacing
+ (title.text == "" ? 0 : title.width + font.hspacing),
compact_rec_pos (y, text_t));
text_t.show();
// 6. Draw grid lines to the ser.axis_x.place.zmin.
var grid_style = ser.grid.style;
if (joint_y) grid_style.color = Color(0, 0, 0, 0.5);
grid_style.apply(chart);
double x = chart.evarea.x0 + max_rec_width + font.hspacing + (title.text == "" ? 0 : title.width + font.hspacing);
ctx.move_to (x, scr_y);
if (joint_y)
ctx.line_to (chart.plarea.x1, scr_y);
else
ctx.line_to (double.max (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmax), scr_y);
break;
case Axis.Position.HIGH:
ctx.move_to (chart.evarea.x1 - text_t.width - font.hspacing ctx.move_to (chart.evarea.x1 - text_t.width - font.hspacing
- (title.text == "" ? 0 : title.width + font.hspacing), - (title.text == "" ? 0 : title.width + font.hspacing),
compact_rec_pos (y, text_t)); compact_rec_pos (v, text_t));
text_t.show(); text_t.show();
// 6. Draw grid lines to the ser.axis_x.place.zmax. // 6. Draw grid lines to the ser.axis_x.place.zmax.
var grid_style = ser.grid.style; var grid_style = ser.grid.style;
if (joint_y) grid_style.color = Color(0, 0, 0, 0.5); if (chart.joint_y) grid_style.color = Color(0, 0, 0, 0.5);
grid_style.apply(chart); grid_style.apply(chart);
double x = chart.evarea.x1 - max_rec_width - font.hspacing - (title.text == "" ? 0 : title.width + font.hspacing); double x = chart.evarea.x1 - max_rec_size - font.hspacing - (title.text == "" ? 0 : title.width + font.hspacing);
ctx.move_to (x, scr_y); ctx.move_to (x, scr_v);
if (joint_y) if (chart.joint_y)
ctx.line_to (chart.plarea.x0, scr_y); ctx.line_to (chart.plarea.x0, scr_v);
else else
ctx.line_to (double.min (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmin), scr_y); ctx.line_to (double.min (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmin), scr_v);
break; break;
} }
} }
} }
} }
}
} }