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@ -188,6 +188,8 @@ namespace CairoChart {
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/**
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* Prints date/time to strings with a current formats.
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* @param date returns formatted date string.
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* @param time returns formatted time string.
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*/
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public virtual void print_dt (Float128 x, out string date, out string time) {
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date = time = "";
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380
src/Cursor.vala
380
src/Cursor.vala
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@ -10,39 +10,6 @@ namespace CairoChart {
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protected Point active_cursor = Point(); // { get; protected set; default = Point128 (); }
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protected bool is_cursor_active = false; // { get; protected set; default = false; }
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/**
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*
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*/
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public Cursors.Style cursor_style = Cursors.Style();
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/**
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*
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*/
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public Cursors.CursorCrossings[] crossings = {};
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/**
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*
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*/
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public Cursors (Chart chart) {
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this.chart = chart;
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}
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/**
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*
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*/
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public Cursors copy () {
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var c = new Cursors (chart);
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c.list = list.copy();
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c.active_cursor = active_cursor;
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c.is_cursor_active = is_cursor_active;
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c.cursor_style = cursor_style;
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c.crossings = crossings;
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return c;
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}
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/**
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*
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*/
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protected enum Orientation {
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VERTICAL = 0,
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HORIZONTAL
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@ -77,41 +44,59 @@ namespace CairoChart {
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}
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}
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protected struct CursorCross {
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uint series_index;
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Point128 point;
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Point128 size;
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bool show_x;
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bool show_date;
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bool show_time;
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bool show_y;
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Point scr_point;
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Point scr_value_point;
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}
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protected struct CursorCrossings {
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uint cursor_index;
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CursorCross[] crossings;
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/**
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* Cursor style.
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*/
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public Cursors.Style cursor_style = Cursors.Style();
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/**
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* Crossings.
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*/
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public Cursors.CursorCrossings[] crossings = {};
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/**
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* Constructs a new ``Chart``.
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* @param chart ``Chart`` instance.
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*/
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public Cursors (Chart chart) {
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this.chart = chart;
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}
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/**
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* Gets a copy of the ``Cursors``.
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*/
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public Cursors copy () {
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var c = new Cursors (chart);
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c.list = list.copy();
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c.active_cursor = active_cursor;
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c.is_cursor_active = is_cursor_active;
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c.cursor_style = cursor_style;
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c.crossings = crossings;
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return c;
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}
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/**
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* Sets active cursor.
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* @param p ``Cursor`` position.
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* @param remove select for removing or not.
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*/
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public virtual void set_active (Point p, bool remove = false) {
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active_cursor.x = chart.zoom.x0 + (p.x - chart.plarea.x0) / chart.plarea.width * chart.zoom.width;
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active_cursor.y = chart.zoom.y1 - (chart.plarea.y1 - p.y) / chart.plarea.height * chart.zoom.height;
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is_cursor_active = ! remove;
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}
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/**
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* Adds active cursor.
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*/
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public virtual void add_active () {
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list.append (active_cursor);
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is_cursor_active = false;
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}
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protected virtual Float128 rel2scr_x(Float128 x) {
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return chart.plarea.x0 + chart.plarea.width * (x - chart.zoom.x0) / chart.zoom.width;
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}
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protected virtual Float128 rel2scr_y(Float128 y) {
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return chart.plarea.y0 + chart.plarea.height * (y - chart.zoom.y0) / chart.zoom.height;
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}
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/**
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* Removes active cursor.
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*/
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public virtual void remove_active () {
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if (list.length() == 0) return;
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var distance = 1024.0 * 1024;//width * width;
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@ -134,131 +119,9 @@ namespace CairoChart {
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is_cursor_active = false;
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}
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protected List<Point?> get_all_cursors () {
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var all_cursors = list.copy_deep ((src) => { return src; });
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if (is_cursor_active)
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all_cursors.append(active_cursor);
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return all_cursors;
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}
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protected void get_crossings () {
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var all_cursors = get_all_cursors();
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CursorCrossings[] local_cursor_crossings = {};
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for (var ci = 0, max_ci = all_cursors.length(); ci < max_ci; ++ci) {
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var c = all_cursors.nth_data(ci);
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL: if (c.x <= chart.zoom.x0 || c.x >= chart.zoom.x1) continue; break;
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case Orientation.HORIZONTAL: if (c.y <= chart.zoom.y0 || c.y >= chart.zoom.y1) continue; break;
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}
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CursorCross[] crossings = {};
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for (var si = 0, max_si = chart.series.length; si < max_si; ++si) {
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var s = chart.series[si];
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if (!s.zoom_show) continue;
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var points = Math.sort_points (s, s.sort);
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for (var i = 0; i + 1 < points.length; ++i) {
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL:
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Float128 y = 0;
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if (Math.vcross(s.get_scr_point(points[i]), s.get_scr_point(points[i+1]), rel2scr_x(c.x),
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chart.plarea.y0, chart.plarea.y1, out y)) {
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var point = Point128(s.get_real_x(rel2scr_x(c.x)), s.get_real_y(y));
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Point128 size; bool show_x, show_date, show_time, show_y;
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cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
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calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y);
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CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y};
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crossings += cc;
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}
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break;
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case Orientation.HORIZONTAL:
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Float128 x = 0;
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if (Math.hcross(s.get_scr_point(points[i]), s.get_scr_point(points[i+1]),
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chart.plarea.x0, chart.plarea.x1, rel2scr_y(c.y), out x)) {
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var point = Point128(s.get_real_x(x), s.get_real_y(rel2scr_y(c.y)));
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Point128 size; bool show_x, show_date, show_time, show_y;
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cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
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calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y);
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CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y};
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crossings += cc;
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}
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break;
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}
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}
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}
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if (crossings.length != 0) {
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CursorCrossings ccs = {ci, crossings};
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local_cursor_crossings += ccs;
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}
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}
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crossings = local_cursor_crossings;
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}
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protected virtual void calc_cursors_value_positions () {
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for (var ccsi = 0, max_ccsi = crossings.length; ccsi < max_ccsi; ++ccsi) {
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for (var cci = 0, max_cci = crossings[ccsi].crossings.length; cci < max_cci; ++cci) {
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// TODO: Ticket #142: find smart algorithm of cursors values placements
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unowned CursorCross[] cr = crossings[ccsi].crossings;
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cr[cci].scr_point = chart.series[cr[cci].series_index].get_scr_point (cr[cci].point);
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var d_max = double.max (cr[cci].size.x / 1.5, cr[cci].size.y / 1.5);
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cr[cci].scr_value_point = Point (cr[cci].scr_point.x + d_max, cr[cci].scr_point.y - d_max);
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}
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}
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}
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protected virtual void cross_what_to_show (Series s, out bool show_x, out bool show_time,
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out bool show_date, out bool show_y) {
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show_x = show_time = show_date = show_y = false;
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL:
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show_y = true;
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if (!chart.joint_x)
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switch (s.axis_x.dtype) {
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case Axis.DType.NUMBERS: show_x = true; break;
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case Axis.DType.DATE_TIME:
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if (s.axis_x.date_format != "") show_date = true;
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if (s.axis_x.time_format != "") show_time = true;
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break;
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}
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break;
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case Orientation.HORIZONTAL:
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if (!chart.joint_y) show_y = true;
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switch (s.axis_x.dtype) {
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case Axis.DType.NUMBERS: show_x = true; break;
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case Axis.DType.DATE_TIME:
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if (s.axis_x.date_format != "") show_date = true;
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if (s.axis_x.time_format != "") show_time = true;
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break;
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}
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break;
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}
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}
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protected virtual void calc_cross_sizes (Series s, Point128 p, out Point128 size,
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bool show_x = false, bool show_time = false,
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bool show_date = false, bool show_y = false) {
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if (show_x == show_time == show_date == show_y == false)
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cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
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size = Point128 ();
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string date, time;
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s.axis_x.print_dt(p.x, out date, out time);
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var date_t = new Text(chart, date, s.axis_x.font, s.axis_x.color);
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var time_t = new Text(chart, time, s.axis_x.font, s.axis_x.color);
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var x_t = new Text(chart, s.axis_x.format.printf((LongDouble)p.x), s.axis_x.font, s.axis_x.color);
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var y_t = new Text(chart, s.axis_y.format.printf((LongDouble)p.y), s.axis_y.font, s.axis_y.color);
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var h_x = 0.0, h_y = 0.0;
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if (show_x) { size.x = x_t.width; h_x = x_t.height; }
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if (show_date) { size.x = date_t.width; h_x = date_t.height; }
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if (show_time) { size.x = double.max(size.x, time_t.width); h_x += time_t.height; }
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if (show_y) { size.x += y_t.width; h_y = y_t.height; }
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if ((show_x || show_date || show_time) && show_y) size.x += double.max(s.axis_x.font.hspacing, s.axis_y.font.hspacing);
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if (show_date && show_time) h_x += s.axis_x.font.hspacing;
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size.y = double.max (h_x, h_y);
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}
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/**
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* Draws cursors.
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*/
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public virtual void draw () {
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if (chart.series.length == 0) return;
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@ -453,6 +316,10 @@ namespace CairoChart {
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}
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}
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/**
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* Gets delta between 2 cursors values.
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* @param delta returns delta value.
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*/
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public bool get_delta (out Float128 delta) {
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delta = 0;
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if (chart.series.length == 0) return false;
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@ -486,6 +353,9 @@ namespace CairoChart {
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return false;
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}
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/**
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* Gets delta formatted string.
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*/
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public string get_delta_str () {
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Float128 delta = 0;
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if (!get_delta(out delta)) return "";
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@ -508,5 +378,155 @@ namespace CairoChart {
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}
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return str;
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}
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protected struct CursorCross {
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uint series_index;
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Point128 point;
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Point128 size;
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bool show_x;
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bool show_date;
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bool show_time;
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bool show_y;
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Point scr_point;
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Point scr_value_point;
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}
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protected struct CursorCrossings {
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uint cursor_index;
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CursorCross[] crossings;
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}
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protected virtual Float128 rel2scr_x(Float128 x) {
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return chart.plarea.x0 + chart.plarea.width * (x - chart.zoom.x0) / chart.zoom.width;
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}
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protected virtual Float128 rel2scr_y(Float128 y) {
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return chart.plarea.y0 + chart.plarea.height * (y - chart.zoom.y0) / chart.zoom.height;
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}
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protected List<Point?> get_all_cursors () {
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var all_cursors = list.copy_deep ((src) => { return src; });
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if (is_cursor_active)
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all_cursors.append(active_cursor);
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return all_cursors;
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}
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protected void get_crossings () {
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var all_cursors = get_all_cursors();
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CursorCrossings[] local_cursor_crossings = {};
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for (var ci = 0, max_ci = all_cursors.length(); ci < max_ci; ++ci) {
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var c = all_cursors.nth_data(ci);
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL: if (c.x <= chart.zoom.x0 || c.x >= chart.zoom.x1) continue; break;
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case Orientation.HORIZONTAL: if (c.y <= chart.zoom.y0 || c.y >= chart.zoom.y1) continue; break;
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}
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CursorCross[] crossings = {};
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for (var si = 0, max_si = chart.series.length; si < max_si; ++si) {
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var s = chart.series[si];
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if (!s.zoom_show) continue;
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var points = Math.sort_points (s, s.sort);
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for (var i = 0; i + 1 < points.length; ++i) {
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL:
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Float128 y = 0;
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if (Math.vcross(s.get_scr_point(points[i]), s.get_scr_point(points[i+1]), rel2scr_x(c.x),
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chart.plarea.y0, chart.plarea.y1, out y)) {
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var point = Point128(s.get_real_x(rel2scr_x(c.x)), s.get_real_y(y));
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Point128 size; bool show_x, show_date, show_time, show_y;
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cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
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calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y);
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CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y};
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crossings += cc;
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}
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break;
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case Orientation.HORIZONTAL:
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Float128 x = 0;
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if (Math.hcross(s.get_scr_point(points[i]), s.get_scr_point(points[i+1]),
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chart.plarea.x0, chart.plarea.x1, rel2scr_y(c.y), out x)) {
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var point = Point128(s.get_real_x(x), s.get_real_y(rel2scr_y(c.y)));
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Point128 size; bool show_x, show_date, show_time, show_y;
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cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
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calc_cross_sizes (s, point, out size, show_x, show_time, show_date, show_y);
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CursorCross cc = {si, point, size, show_x, show_date, show_time, show_y};
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crossings += cc;
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}
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break;
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}
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}
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}
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if (crossings.length != 0) {
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CursorCrossings ccs = {ci, crossings};
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local_cursor_crossings += ccs;
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}
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}
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crossings = local_cursor_crossings;
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}
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protected virtual void calc_cursors_value_positions () {
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for (var ccsi = 0, max_ccsi = crossings.length; ccsi < max_ccsi; ++ccsi) {
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for (var cci = 0, max_cci = crossings[ccsi].crossings.length; cci < max_cci; ++cci) {
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// TODO: Ticket #142: find smart algorithm of cursors values placements
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unowned CursorCross[] cr = crossings[ccsi].crossings;
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cr[cci].scr_point = chart.series[cr[cci].series_index].get_scr_point (cr[cci].point);
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var d_max = double.max (cr[cci].size.x / 1.5, cr[cci].size.y / 1.5);
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cr[cci].scr_value_point = Point (cr[cci].scr_point.x + d_max, cr[cci].scr_point.y - d_max);
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}
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}
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}
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protected virtual void cross_what_to_show (Series s, out bool show_x, out bool show_time,
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out bool show_date, out bool show_y) {
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show_x = show_time = show_date = show_y = false;
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switch (cursor_style.orientation) {
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case Orientation.VERTICAL:
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show_y = true;
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if (!chart.joint_x)
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switch (s.axis_x.dtype) {
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case Axis.DType.NUMBERS: show_x = true; break;
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case Axis.DType.DATE_TIME:
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if (s.axis_x.date_format != "") show_date = true;
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if (s.axis_x.time_format != "") show_time = true;
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break;
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}
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break;
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case Orientation.HORIZONTAL:
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if (!chart.joint_y) show_y = true;
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switch (s.axis_x.dtype) {
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case Axis.DType.NUMBERS: show_x = true; break;
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case Axis.DType.DATE_TIME:
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if (s.axis_x.date_format != "") show_date = true;
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if (s.axis_x.time_format != "") show_time = true;
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break;
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}
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break;
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}
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}
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protected virtual void calc_cross_sizes (Series s, Point128 p, out Point128 size,
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bool show_x = false, bool show_time = false,
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bool show_date = false, bool show_y = false) {
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if (show_x == show_time == show_date == show_y == false)
|
||||
cross_what_to_show(s, out show_x, out show_time, out show_date, out show_y);
|
||||
size = Point128 ();
|
||||
string date, time;
|
||||
s.axis_x.print_dt(p.x, out date, out time);
|
||||
var date_t = new Text(chart, date, s.axis_x.font, s.axis_x.color);
|
||||
var time_t = new Text(chart, time, s.axis_x.font, s.axis_x.color);
|
||||
var x_t = new Text(chart, s.axis_x.format.printf((LongDouble)p.x), s.axis_x.font, s.axis_x.color);
|
||||
var y_t = new Text(chart, s.axis_y.format.printf((LongDouble)p.y), s.axis_y.font, s.axis_y.color);
|
||||
var h_x = 0.0, h_y = 0.0;
|
||||
if (show_x) { size.x = x_t.width; h_x = x_t.height; }
|
||||
if (show_date) { size.x = date_t.width; h_x = date_t.height; }
|
||||
if (show_time) { size.x = double.max(size.x, time_t.width); h_x += time_t.height; }
|
||||
if (show_y) { size.x += y_t.width; h_y = y_t.height; }
|
||||
if ((show_x || show_date || show_time) && show_y) size.x += double.max(s.axis_x.font.hspacing, s.axis_y.font.hspacing);
|
||||
if (show_date && show_time) h_x += s.axis_x.font.hspacing;
|
||||
size.y = double.max (h_x, h_y);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue