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194
src/Axis.vala
194
src/Axis.vala
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@ -370,8 +370,8 @@ namespace CairoChart {
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title.show();
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}
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if (is_x) draw_hrecs (step, max_rec_height, min);
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else draw_vrecs (step, max_rec_width, min);
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if (is_x) draw_recs (step, max_rec_height, min);
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else draw_recs (step, max_rec_width, min);
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chart.ctx.stroke ();
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@ -495,127 +495,113 @@ namespace CairoChart {
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}
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}
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protected virtual void draw_hrecs (Float128 step, double max_rec_height, Float128 x_min) {
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protected virtual void draw_recs (Float128 step, double max_rec_size, Float128 min) {
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// 5. Draw records, update cur_{x,y}_{min,max}.
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var ctx = chart.ctx;
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var joint_x = chart.joint_x;
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for (Float128 x = x_min, x_max = range.zmax; Math.point_belong (x, x_min, x_max); x += step) {
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if (joint_x) chart.color = chart.joint_color;
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for (Float128 v = min, max = range.zmax; Math.point_belong (v, min, max); v += step) {
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if (is_x && chart.joint_x || !is_x && chart.joint_y) chart.color = chart.joint_color;
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else chart.color = color;
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string text = "", time_text = "";
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switch (dtype) {
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case Axis.DType.NUMBERS: text = format.printf((LongDouble)x); break;
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case Axis.DType.DATE_TIME: print_dt(x, out text, out time_text); break;
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case Axis.DType.NUMBERS: text = format.printf((LongDouble)v); break;
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case Axis.DType.DATE_TIME: print_dt(v, out text, out time_text); break;
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}
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var scr_x = scr_pos (x);
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var scr_v = scr_pos (v);
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var text_t = new Text(chart, text, font, color);
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switch (position) {
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case Axis.Position.LOW:
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var print_y = chart.evarea.y1 - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
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var print_x = compact_rec_pos (x, text_t);
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ctx.move_to (print_x, print_y);
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switch (dtype) {
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case Axis.DType.NUMBERS:
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text_t.show();
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if (is_x) {
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var print_y = chart.evarea.y1 - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
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var print_x = compact_rec_pos (v, text_t);
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ctx.move_to (print_x, print_y);
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switch (dtype) {
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case Axis.DType.NUMBERS:
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text_t.show();
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break;
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case Axis.DType.DATE_TIME:
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if (date_format != "") text_t.show();
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var time_text_t = new Text(chart, time_text, font, color);
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print_x = compact_rec_pos (v, time_text_t);
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ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
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if (time_format != "") time_text_t.show();
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break;
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}
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// 6. Draw grid lines to the ser.axis_y.place.zmin.
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var grid_style = ser.grid.style;
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if (chart.joint_x) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double y = chart.evarea.y1 - max_rec_size - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
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ctx.move_to (scr_v, y);
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if (chart.joint_x)
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ctx.line_to (scr_v, chart.plarea.y0);
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else
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ctx.line_to (scr_v, double.min (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmax)));
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break;
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case Axis.DType.DATE_TIME:
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if (date_format != "") text_t.show();
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var time_text_t = new Text(chart, time_text, font, color);
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print_x = compact_rec_pos (x, time_text_t);
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ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
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if (time_format != "") time_text_t.show();
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} else {
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ctx.move_to (chart.evarea.x0 + max_rec_size - text_t.width + font.hspacing
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+ (title.text == "" ? 0 : title.width + font.hspacing),
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compact_rec_pos (v, text_t));
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text_t.show();
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// 6. Draw grid lines to the ser.axis_x.place.zmin.
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var grid_style = ser.grid.style;
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if (chart.joint_y) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double x = chart.evarea.x0 + max_rec_size + font.hspacing + (title.text == "" ? 0 : title.width + font.hspacing);
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ctx.move_to (x, scr_v);
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if (chart.joint_y)
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ctx.line_to (chart.plarea.x1, scr_v);
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else
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ctx.line_to (double.max (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmax), scr_v);
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break;
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}
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// 6. Draw grid lines to the ser.axis_y.place.zmin.
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var grid_style = ser.grid.style;
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if (joint_x) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double y = chart.evarea.y1 - max_rec_height - font.vspacing - (title.text == "" ? 0 : title.height + font.vspacing);
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ctx.move_to (scr_x, y);
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if (joint_x)
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ctx.line_to (scr_x, chart.plarea.y0);
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else
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ctx.line_to (scr_x, double.min (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmax)));
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break;
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case Axis.Position.HIGH:
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var print_y = chart.evarea.y0 + max_rec_height + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
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var print_x = compact_rec_pos (x, text_t);
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ctx.move_to (print_x, print_y);
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if (is_x) {
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var print_y = chart.evarea.y0 + max_rec_size + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
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var print_x = compact_rec_pos (v, text_t);
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ctx.move_to (print_x, print_y);
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switch (dtype) {
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case Axis.DType.NUMBERS:
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text_t.show();
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switch (dtype) {
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case Axis.DType.NUMBERS:
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text_t.show();
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break;
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case Axis.DType.DATE_TIME:
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if (date_format != "") text_t.show();
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var time_text_t = new Text(chart, time_text, font, color);
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print_x = compact_rec_pos (v, time_text_t);
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ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
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if (time_format != "") time_text_t.show();
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break;
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}
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// 6. Draw grid lines to the ser.axis_y.place.zmax.
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var grid_style = ser.grid.style;
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if (chart.joint_x) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double y = chart.evarea.y0 + max_rec_size + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
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ctx.move_to (scr_v, y);
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if (chart.joint_x)
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ctx.line_to (scr_v, chart.plarea.y1);
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else
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ctx.line_to (scr_v, double.max (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmin)));
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break;
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case Axis.DType.DATE_TIME:
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if (date_format != "") text_t.show();
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var time_text_t = new Text(chart, time_text, font, color);
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print_x = compact_rec_pos (x, time_text_t);
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ctx.move_to (print_x, print_y - (date_format == "" ? 0 : text_t.height + font.vspacing));
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if (time_format != "") time_text_t.show();
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} else {
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ctx.move_to (chart.evarea.x1 - text_t.width - font.hspacing
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- (title.text == "" ? 0 : title.width + font.hspacing),
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compact_rec_pos (v, text_t));
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text_t.show();
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// 6. Draw grid lines to the ser.axis_x.place.zmax.
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var grid_style = ser.grid.style;
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if (chart.joint_y) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double x = chart.evarea.x1 - max_rec_size - font.hspacing - (title.text == "" ? 0 : title.width + font.hspacing);
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ctx.move_to (x, scr_v);
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if (chart.joint_y)
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ctx.line_to (chart.plarea.x0, scr_v);
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else
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ctx.line_to (double.min (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmin), scr_v);
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break;
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}
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// 6. Draw grid lines to the ser.axis_y.place.zmax.
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var grid_style = ser.grid.style;
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if (joint_x) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double y = chart.evarea.y0 + max_rec_height + font.vspacing + (title.text == "" ? 0 : title.height + font.vspacing);
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ctx.move_to (scr_x, y);
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if (joint_x)
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ctx.line_to (scr_x, chart.plarea.y1);
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else
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ctx.line_to (scr_x, double.max (y, chart.plarea.y0 + chart.plarea.height * (1 - ser.axis_y.place.zmin)));
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break;
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}
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}
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}
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protected virtual void draw_vrecs (Float128 step, double max_rec_width, Float128 y_min) {
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// 5. Draw records, update cur_{x,y}_{min,max}.
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var ctx = chart.ctx;
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var joint_y = chart.joint_y;
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for (Float128 y = y_min, y_max = range.zmax; Math.point_belong (y, y_min, y_max); y += step) {
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if (joint_y) chart.color = chart.joint_color;
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else chart.color = color;
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var text = format.printf((LongDouble)y);
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var scr_y = scr_pos (y);
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var text_t = new Text(chart, text, font, color);
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switch (position) {
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case Axis.Position.LOW:
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ctx.move_to (chart.evarea.x0 + max_rec_width - text_t.width + font.hspacing
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+ (title.text == "" ? 0 : title.width + font.hspacing),
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compact_rec_pos (y, text_t));
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text_t.show();
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// 6. Draw grid lines to the ser.axis_x.place.zmin.
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var grid_style = ser.grid.style;
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if (joint_y) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double x = chart.evarea.x0 + max_rec_width + font.hspacing + (title.text == "" ? 0 : title.width + font.hspacing);
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ctx.move_to (x, scr_y);
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if (joint_y)
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ctx.line_to (chart.plarea.x1, scr_y);
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else
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ctx.line_to (double.max (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmax), scr_y);
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break;
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case Axis.Position.HIGH:
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ctx.move_to (chart.evarea.x1 - text_t.width - font.hspacing
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- (title.text == "" ? 0 : title.width + font.hspacing),
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compact_rec_pos (y, text_t));
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text_t.show();
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// 6. Draw grid lines to the ser.axis_x.place.zmax.
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var grid_style = ser.grid.style;
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if (joint_y) grid_style.color = Color(0, 0, 0, 0.5);
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grid_style.apply(chart);
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double x = chart.evarea.x1 - max_rec_width - font.hspacing - (title.text == "" ? 0 : title.width + font.hspacing);
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ctx.move_to (x, scr_y);
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if (joint_y)
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ctx.line_to (chart.plarea.x0, scr_y);
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else
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ctx.line_to (double.min (x, chart.plarea.x0 + chart.plarea.width * ser.axis_x.place.zmin), scr_y);
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break;
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}
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}
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}
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