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Cairo-Chart
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Split source files on classes.

This commit is contained in:
Kolan Sh 2017-08-28 14:47:31 +03:00
parent cf9ec1dc04
commit accddc2b79
14 changed files with 338 additions and 357 deletions
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70
src/Axis.vala Normal file
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@ -0,0 +1,70 @@
namespace Gtk.CairoChart {
// If one of axis:title or axis:min/max are different
// then draw separate axis for each/all series
// or specify series name near the axis
public class Axis {
public Float128 min = 0;
public Float128 max = 1;
public Text title = new Text ("");
public enum Type {
NUMBERS = 0,
DATE_TIME
}
public enum ScaleType {
LINEAR = 0, // default
// LOGARITHMIC, // TODO
// etc
}
public Type type;
public ScaleType scale_type;
public enum Position {
LOW = 0,
HIGH = 1,
BOTH = 2
}
public Position position = Position.LOW;
string _format = "%.2Lf";
string _date_format = "%Y.%m.%d";
string _time_format = "%H:%M:%S";
int _dsec_signs = 2; // 2 signs = centiseconds
public string format {
get { return _format; }
set {
// TODO: check format
_format = value;
}
default = "%.2Lf";
}
public string date_format {
get { return _date_format; }
set {
// TODO: check format
_date_format = value;
}
default = "%Y.%m.%d";
}
public string time_format {
get { return _time_format; }
set {
// TODO: check format
_time_format = value;
}
default = "%H:%M:%S";
}
public int dsec_signs {
get { return _dsec_signs; }
set {
// TODO: check format
_dsec_signs = value;
}
default = 2;
}
public FontStyle font_style = FontStyle ();
public Color color = Color ();
public LineStyle line_style = new LineStyle ();
public double font_indent = 5;
public Axis () {}
}
}

117
src/GtkChart.vala → src/Chart.vala
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@ -1,8 +1,4 @@
// даты/время: сетка для малых интервалов (< нескольких секунд)
using Cairo;
namespace Gtk.CairoChart {
public class Chart {
protected double width = 0;
@ -15,23 +11,6 @@ namespace Gtk.CairoChart {
public Text title = new Text ("Cairo Chart");
public Color border_color = Color(0, 0, 0, 0.3);
public class Legend {
public enum Position {
TOP = 0, // default
LEFT,
RIGHT,
BOTTOM
}
public Position position = Position.TOP;
public FontStyle font_style = FontStyle();
public Color bg_color = Color(1, 1, 1);
public LineStyle border_style = new LineStyle ();
public double indent = 5;
public Legend () {
border_style.color = Color (0, 0, 0, 0.3);
}
}
public Legend legend = new Legend ();
@ -112,30 +91,6 @@ namespace Gtk.CairoChart {
}
}
// TODO:
public virtual bool button_release_event (Gdk.EventButton event) {
//stdout.puts ("button_release_event\n");
return true;
}
// TODO:
public virtual bool button_press_event (Gdk.EventButton event) {
//stdout.puts ("button_press_event\n");
return true;
}
// TODO:
public virtual bool motion_notify_event (Gdk.EventMotion event) {
//stdout.puts ("motion_notify_event\n");
return true;
}
// TODO:
public virtual bool scroll_notify_event (Gdk.EventScroll event) {
//stdout.puts ("scroll_notify_event\n");
return true;
}
protected double title_width = 0.0;
protected double title_height = 0.0;
@ -405,18 +360,18 @@ namespace Gtk.CairoChart {
int axis_rec_npoints = 128;
protected virtual void calc_axis_rec_sizes (Series.Axis axis, out double max_rec_width, out double max_rec_height, bool is_horizontal = true) {
protected virtual void calc_axis_rec_sizes (Axis axis, out double max_rec_width, out double max_rec_height, bool is_horizontal = true) {
max_rec_width = max_rec_height = 0;
for (var i = 0; i < axis_rec_npoints; ++i) {
Float128 x = axis.min + (axis.max - axis.min) / axis_rec_npoints * i;
switch (axis.type) {
case Series.Axis.Type.NUMBERS:
case Axis.Type.NUMBERS:
var text = new Text (axis.format.printf((LongDouble)x) + (is_horizontal ? "_" : ""));
text.style = axis.font_style;
max_rec_width = double.max (max_rec_width, text.get_width(context));
max_rec_height = double.max (max_rec_height, text.get_height(context));
break;
case Series.Axis.Type.DATE_TIME:
case Axis.Type.DATE_TIME:
var dt = new DateTime.from_unix_utc((int64)x);
var text = new Text("");
var h = 0.0;
@ -547,9 +502,9 @@ namespace Gtk.CairoChart {
if (!common_x_axes || si == 0)
switch (s.axis_x.position) {
case Series.Axis.Position.LOW: plot_area_y_max -= max_rec_height + max_font_indent + max_axis_font_height; break;
case Series.Axis.Position.HIGH: plot_area_y_min += max_rec_height + max_font_indent + max_axis_font_height; break;
case Series.Axis.Position.BOTH: break;
case Axis.Position.LOW: plot_area_y_max -= max_rec_height + max_font_indent + max_axis_font_height; break;
case Axis.Position.HIGH: plot_area_y_min += max_rec_height + max_font_indent + max_axis_font_height; break;
case Axis.Position.BOTH: break;
default: break;
}
}
@ -592,9 +547,9 @@ namespace Gtk.CairoChart {
if (!common_y_axes || si == 0)
switch (s.axis_y.position) {
case Series.Axis.Position.LOW: plot_area_x_min += max_rec_width + max_font_indent + max_axis_font_width; break;
case Series.Axis.Position.HIGH: plot_area_x_max -= max_rec_width + max_font_indent + max_axis_font_width; break;
case Series.Axis.Position.BOTH: break;
case Axis.Position.LOW: plot_area_x_min += max_rec_width + max_font_indent + max_axis_font_width; break;
case Axis.Position.HIGH: plot_area_x_max -= max_rec_width + max_font_indent + max_axis_font_width; break;
case Axis.Position.BOTH: break;
default: break;
}
}
@ -618,7 +573,7 @@ namespace Gtk.CairoChart {
long max_nrecs = (long) ((plot_area_x_max - plot_area_x_min) * (s.place.x_high - s.place.x_low) / max_rec_width);
// 3. Calculate grid step.
Float128 step = calc_round_step ((s.axis_x.max - s.axis_x.min) / max_nrecs, s.axis_x.type == Series.Axis.Type.DATE_TIME);
Float128 step = calc_round_step ((s.axis_x.max - s.axis_x.min) / max_nrecs, s.axis_x.type == Axis.Type.DATE_TIME);
if (step > s.axis_x.max - s.axis_x.min)
step = s.axis_x.max - s.axis_x.min;
@ -637,7 +592,7 @@ namespace Gtk.CairoChart {
// 4.5. Draw Axis title
if (s.axis_x.title.text != "")
switch (s.axis_x.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
var scr_x = plot_area_x_min + (plot_area_x_max - plot_area_x_min) * (s.place.x_low + s.place.x_high) / 2.0;
var scr_y = cur_y_max - s.axis_x.font_indent;
context.move_to(scr_x - s.axis_x.title.get_width(context) / 2.0, scr_y);
@ -645,7 +600,7 @@ namespace Gtk.CairoChart {
if (common_x_axes) set_source_rgba(Color(0,0,0,1));
show_text(s.axis_x.title);
break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
var scr_x = plot_area_x_min + (plot_area_x_max - plot_area_x_min) * (s.place.x_low + s.place.x_high) / 2.0;
var scr_y = cur_y_min + s.axis_x.font_indent + s.axis_x.title.get_height(context);
context.move_to(scr_x - s.axis_x.title.get_width(context) / 2.0, scr_y);
@ -653,7 +608,7 @@ namespace Gtk.CairoChart {
if (common_x_axes) set_source_rgba(Color(0,0,0,1));
show_text(s.axis_x.title);
break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
}
@ -663,10 +618,10 @@ namespace Gtk.CairoChart {
else set_source_rgba(s.axis_x.color);
string text = "", time_text = "";
switch (s.axis_x.type) {
case Series.Axis.Type.NUMBERS:
case Axis.Type.NUMBERS:
text = s.axis_x.format.printf((LongDouble)x);
break;
case Series.Axis.Type.DATE_TIME:
case Axis.Type.DATE_TIME:
var dt = new DateTime.from_unix_utc((int64)x);
text = dt.format(s.axis_x.date_format);
var dsec_str =
@ -680,16 +635,16 @@ namespace Gtk.CairoChart {
* (s.place.x_low + (s.place.x_high - s.place.x_low) / (s.axis_x.max - s.axis_x.min) * (x - s.axis_x.min));
var text_t = new Text(text, s.axis_x.font_style, s.axis_x.color);
switch (s.axis_x.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
var print_y = cur_y_max - s.axis_x.font_indent - (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent);
switch (s.axis_x.type) {
case Series.Axis.Type.NUMBERS:
case Axis.Type.NUMBERS:
var print_x = scr_x - text_t.get_width(context) / 2.0 - text_t.get_x_bearing(context)
- text_t.get_width(context) * (x - (s.axis_x.min + s.axis_x.max) / 2.0) / (s.axis_x.max - s.axis_x.min);
context.move_to (print_x, print_y);
show_text(text_t);
break;
case Series.Axis.Type.DATE_TIME:
case Axis.Type.DATE_TIME:
var print_x = scr_x - text_t.get_width(context) / 2.0 - text_t.get_x_bearing(context)
- text_t.get_width(context) * (x - (s.axis_x.min + s.axis_x.max) / 2.0) / (s.axis_x.max - s.axis_x.min);
context.move_to (print_x, print_y);
@ -714,16 +669,16 @@ namespace Gtk.CairoChart {
else
context.line_to (scr_x, double.min (y, plot_area_y_max - (plot_area_y_max - plot_area_y_min) * s.place.y_high));
break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
var print_y = cur_y_min + max_rec_height + s.axis_x.font_indent + (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent);
switch (s.axis_x.type) {
case Series.Axis.Type.NUMBERS:
case Axis.Type.NUMBERS:
var print_x = scr_x - text_t.get_width(context) / 2.0 - text_t.get_x_bearing(context)
- text_t.get_width(context) * (x - (s.axis_x.min + s.axis_x.max) / 2.0) / (s.axis_x.max - s.axis_x.min);
context.move_to (print_x, print_y);
show_text(text_t);
break;
case Series.Axis.Type.DATE_TIME:
case Axis.Type.DATE_TIME:
var print_x = scr_x - text_t.get_width(context) / 2.0 - text_t.get_x_bearing(context)
- text_t.get_width(context) * (x - (s.axis_x.min + s.axis_x.max) / 2.0) / (s.axis_x.max - s.axis_x.min);
context.move_to (print_x, print_y);
@ -748,7 +703,7 @@ namespace Gtk.CairoChart {
else
context.line_to (scr_x, double.max (y, plot_area_y_max - (plot_area_y_max - plot_area_y_min) * s.place.y_low));
break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
default:
break;
@ -779,15 +734,15 @@ namespace Gtk.CairoChart {
if (nskip != 0) {--nskip; continue;}
switch (s.axis_x.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
cur_y_max -= max_rec_height + s.axis_x.font_indent
+ (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent);
break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
cur_y_min += max_rec_height + s.axis_x.font_indent
+ (s.axis_x.title.text == "" ? 0 : s.axis_x.title.get_height(context) + s.axis_x.font_indent);
break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
default: break;
}
@ -825,7 +780,7 @@ namespace Gtk.CairoChart {
// 4.5. Draw Axis title
if (s.axis_y.title.text != "")
switch (s.axis_y.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
var scr_y = plot_area_y_max - (plot_area_y_max - plot_area_y_min) * (s.place.y_low + s.place.y_high) / 2.0;
var scr_x = cur_x_min + s.axis_y.font_indent + s.axis_y.title.get_width(context);
context.move_to(scr_x, scr_y + s.axis_y.title.get_height(context) / 2.0);
@ -833,7 +788,7 @@ namespace Gtk.CairoChart {
if (common_y_axes) set_source_rgba(Color(0,0,0,1));
show_text(s.axis_y.title);
break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
var scr_y = plot_area_y_max - (plot_area_y_max - plot_area_y_min) * (s.place.y_low + s.place.y_high) / 2.0;
var scr_x = cur_x_max - s.axis_y.font_indent;
context.move_to(scr_x, scr_y + s.axis_y.title.get_height(context) / 2.0);
@ -841,7 +796,7 @@ namespace Gtk.CairoChart {
if (common_y_axes) set_source_rgba(Color(0,0,0,1));
show_text(s.axis_y.title);
break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
}
@ -854,7 +809,7 @@ namespace Gtk.CairoChart {
* (s.place.y_low + (s.place.y_high - s.place.y_low) / (s.axis_y.max - s.axis_y.min) * (y - s.axis_y.min));
var text_t = new Text(text, s.axis_y.font_style, s.axis_y.color);
switch (s.axis_y.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
context.move_to (cur_x_min + max_rec_width - (new Text(text)).get_width(context) + s.axis_y.font_indent - text_t.get_x_bearing(context)
+ (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent),
scr_y + (new Text(text)).get_height(context) / 2.0
@ -871,7 +826,7 @@ namespace Gtk.CairoChart {
else
context.line_to (double.max (x, plot_area_x_min + (plot_area_x_max - plot_area_x_min) * s.place.x_high), scr_y);
break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
context.move_to (cur_x_max - (new Text(text)).get_width(context) - s.axis_y.font_indent - text_t.get_x_bearing(context)
- (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent),
scr_y + (new Text(text)).get_height(context) / 2.0
@ -888,7 +843,7 @@ namespace Gtk.CairoChart {
else
context.line_to (double.min (x, plot_area_x_min + (plot_area_x_max - plot_area_x_min) * s.place.x_low), scr_y);
break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
default:
break;
@ -919,13 +874,13 @@ namespace Gtk.CairoChart {
switch (s.axis_y.position) {
case Series.Axis.Position.LOW:
case Axis.Position.LOW:
cur_x_min += max_rec_width + s.axis_y.font_indent
+ (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent); break;
case Series.Axis.Position.HIGH:
case Axis.Position.HIGH:
cur_x_max -= max_rec_width + s.axis_y.font_indent
+ (s.axis_y.title.text == "" ? 0 : s.axis_y.title.get_width(context) + s.axis_y.font_indent); break;
case Series.Axis.Position.BOTH:
case Axis.Position.BOTH:
break;
default: break;
}
@ -953,8 +908,8 @@ namespace Gtk.CairoChart {
/ (s.axis_y.max - s.axis_y.min) * (s.place.y_high - s.place.y_low));
}
delegate int PointComparator(Series.Point a, Series.Point b);
void sort_points(Series.Point[] points, PointComparator compare) {
delegate int PointComparator(Point a, Point b);
void sort_points(Point[] points, PointComparator compare) {
for(var i = 0; i < points.length; ++i) {
for(var j = i + 1; j < points.length; ++j) {
if(compare(points[i], points[j]) > 0) {

12
src/Color.vala Normal file
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@ -0,0 +1,12 @@
namespace Gtk.CairoChart {
public struct Color {
double red;
double green;
double blue;
double alpha;
public Color (double red = 0.0, double green = 0.0, double blue = 0.0, double alpha = 1.0) {
this.red = red; this.green = green; this.blue = blue; this.alpha = alpha;
}
}
}

115
src/Common.vala
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@ -1,115 +0,0 @@
using Cairo;
namespace Gtk.CairoChart {
public struct Color {
double red;
double green;
double blue;
double alpha;
public Color (double red = 0.0, double green = 0.0, double blue = 0.0, double alpha = 1.0) {
this.red = red; this.green = green; this.blue = blue; this.alpha = alpha;
}
}
public enum FontOrient {
HORIZONTAL = 0,
VERTICAL
}
public struct FontStyle {
string family;
FontSlant slant;
FontWeight weight;
FontOrient orientation;
double size;
public FontStyle (string family = "Sans",
FontSlant slant = Cairo.FontSlant.NORMAL,
FontWeight weight = Cairo.FontWeight.NORMAL,
double size = 10) {
this.family = family;
this.slant = slant;
this.weight = weight;
this.size = size;
}
}
public struct LineStyle {
double width;
LineJoin line_join;
LineCap line_cap;
double[]? dashes;
double dash_offset;
Color color;
public LineStyle (double width = 1,
LineJoin line_join = Cairo.LineJoin.MITER,
LineCap line_cap = Cairo.LineCap.ROUND,
double[]? dashes = null, double dash_offset = 0,
Color color = Color()) {
this.width = width;
this.line_join = line_join;
this.line_cap = line_cap;
this.dashes = dashes;
this.dash_offset = dash_offset;
this.color = color;
}
}
[Compact]
public class Text {
public string text = "";
public FontStyle style = FontStyle ();
public Color color = Color();
TextExtents get_extents (Cairo.Context context) {
context.select_font_face (style.family,
style.slant,
style.weight);
context.set_font_size (style.size);
TextExtents extents;
context.text_extents (text, out extents);
return extents;
}
public double get_width (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.width;
else
return extents.height;
}
public double get_height (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.height;
else
return extents.width;
}
public double get_x_bearing (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.x_bearing;
else
return extents.y_bearing;
}
public Text (string text = "",
FontStyle style = FontStyle(),
Color color = Color()) {
this.text = text;
this.style = style;
this.color = color;
}
public Text.by_instance (Text text) {
this.text = text.text;
this.style = text.style;
this.color = text.color;
}
}
}

25
src/FontStyle.vala Normal file
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@ -0,0 +1,25 @@
namespace Gtk.CairoChart {
public enum FontOrient {
HORIZONTAL = 0,
VERTICAL
}
public struct FontStyle {
string family;
Cairo.FontSlant slant;
Cairo.FontWeight weight;
FontOrient orientation;
double size;
public FontStyle (string family = "Sans",
Cairo.FontSlant slant = Cairo.FontSlant.NORMAL,
Cairo.FontWeight weight = Cairo.FontWeight.NORMAL,
double size = 10) {
this.family = family;
this.slant = slant;
this.weight = weight;
this.size = size;
}
}
}

15
src/Grid.vala Normal file
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@ -0,0 +1,15 @@
namespace Gtk.CairoChart {
public class Grid {
/*public enum GridType {
PRICK_LINE = 0, // default
LINE
}*/
public Color color = Color (0, 0, 0, 0.1);
public LineStyle line_style = new LineStyle ();
public Grid () {
line_style.dashes = {2, 3};
}
}
}

8
src/LabelStyle.vala Normal file
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@ -0,0 +1,8 @@
namespace Gtk.CairoChart {
public class LabelStyle {
FontStyle font_style = FontStyle();
LineStyle frame_line_style = new LineStyle();
Color bg_color = Color();
Color frame_color = Color();
}
}

19
src/Legend.vala Normal file
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@ -0,0 +1,19 @@
namespace Gtk.CairoChart {
public class Legend {
public enum Position {
TOP = 0, // default
LEFT,
RIGHT,
BOTTOM
}
public Position position = Position.TOP;
public FontStyle font_style = FontStyle();
public Color bg_color = Color(1, 1, 1);
public LineStyle border_style = new LineStyle ();
public double indent = 5;
public Legend () {
border_style.color = Color (0, 0, 0, 0.3);
}
}
}

23
src/LineStyle.vala Normal file
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@ -0,0 +1,23 @@
namespace Gtk.CairoChart {
public struct LineStyle {
double width;
Cairo.LineJoin line_join;
Cairo.LineCap line_cap;
double[]? dashes;
double dash_offset;
Color color;
public LineStyle (double width = 1,
Cairo.LineJoin line_join = Cairo.LineJoin.MITER,
Cairo.LineCap line_cap = Cairo.LineCap.ROUND,
double[]? dashes = null, double dash_offset = 0,
Color color = Color()) {
this.width = width;
this.line_join = line_join;
this.line_cap = line_cap;
this.dashes = dashes;
this.dash_offset = dash_offset;
this.color = color;
}
}
}

15
src/Place.vala Normal file
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@ -0,0 +1,15 @@
namespace Gtk.CairoChart {
public struct Place {
double x_low;
double x_high;
double y_low;
double y_high;
public Place (double x_low = 0, double x_high = 0, double y_low = 0, double y_high = 0) {
this.x_low = x_low;
this.x_high = x_high;
this.y_low = y_low;
this.y_high = y_high;
}
}
}

10
src/Point.vala Normal file
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@ -0,0 +1,10 @@
namespace Gtk.CairoChart {
public struct Point {
Float128 x;
Float128 y;
public Point (Float128 x, Float128 y) {
this.x = x; this.y = y;
}
}
}

112
src/Series.vala
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@ -4,15 +4,6 @@ namespace Gtk.CairoChart {
public class Series {
public struct Point {
Float128 x;
Float128 y;
public Point (Float128 x, Float128 y) {
this.x = x; this.y = y;
}
}
public Point[] points = {};
public enum Sort {
BY_X = 0,
@ -21,92 +12,9 @@ namespace Gtk.CairoChart {
}
public Sort sort = Sort.BY_X;
// If one of axis:title or axis:min/max are different
// then draw separate axis for each/all series
// or specify series name near the axis
public class Axis {
public Float128 min = 0;
public Float128 max = 1;
public Text title = new Text ("");
public enum Type {
NUMBERS = 0,
DATE_TIME
}
public enum ScaleType {
LINEAR = 0, // default
// LOGARITHMIC, // TODO
// etc
}
public Type type;
public ScaleType scale_type;
public enum Position {
LOW = 0,
HIGH = 1,
BOTH = 2
}
public Position position = Position.LOW;
string _format = "%.2Lf";
string _date_format = "%Y.%m.%d";
string _time_format = "%H:%M:%S";
int _dsec_signs = 2; // 2 signs = centiseconds
public string format {
get { return _format; }
set {
// TODO: check format
_format = value;
}
default = "%.2Lf";
}
public string date_format {
get { return _date_format; }
set {
// TODO: check format
_date_format = value;
}
default = "%Y.%m.%d";
}
public string time_format {
get { return _time_format; }
set {
// TODO: check format
_time_format = value;
}
default = "%H:%M:%S";
}
public int dsec_signs {
get { return _dsec_signs; }
set {
// TODO: check format
_dsec_signs = value;
}
default = 2;
}
public FontStyle font_style = FontStyle ();
public Color color = Color ();
public LineStyle line_style = new LineStyle ();
public double font_indent = 5;
public Axis () {}
}
public Axis axis_x = new Axis();
public Axis axis_y = new Axis();
public struct Place {
double x_low;
double x_high;
double y_low;
double y_high;
public Place (double x_low = 0, double x_high = 0, double y_low = 0, double y_high = 0) {
this.x_low = x_low;
this.x_high = x_high;
this.y_low = y_low;
this.y_high = y_high;
}
}
public enum MarkerType {
NONE = 0, // default
SQUARE,
@ -121,20 +29,6 @@ namespace Gtk.CairoChart {
public Text title = new Text ();
public MarkerType marker_type = MarkerType.SQUARE;
public class Grid {
/*public enum GridType {
PRICK_LINE = 0, // default
LINE
}*/
public Color color = Color (0, 0, 0, 0.1);
public LineStyle line_style = new LineStyle ();
public Grid () {
line_style.dashes = {2, 3};
}
}
public Grid grid = new Grid ();
public GLib.List<Float128?> cursors = new List<Float128?> ();
@ -159,11 +53,5 @@ namespace Gtk.CairoChart {
public Series () {
}
public class LabelStyle {
FontStyle font_style = FontStyle();
LineStyle frame_line_style = new LineStyle();
Color bg_color = Color();
Color frame_color = Color();
}
}
}

56
src/Text.vala Normal file
View File

@ -0,0 +1,56 @@
namespace Gtk.CairoChart {
[Compact]
public class Text {
public string text = "";
public FontStyle style = FontStyle ();
public Color color = Color();
Cairo.TextExtents get_extents (Cairo.Context context) {
context.select_font_face (style.family,
style.slant,
style.weight);
context.set_font_size (style.size);
Cairo.TextExtents extents;
context.text_extents (text, out extents);
return extents;
}
public double get_width (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.width;
else
return extents.height;
}
public double get_height (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.height;
else
return extents.width;
}
public double get_x_bearing (Cairo.Context context) {
var extents = get_extents (context);
if (style.orientation == FontOrient.HORIZONTAL)
return extents.x_bearing;
else
return extents.y_bearing;
}
public Text (string text = "",
FontStyle style = FontStyle(),
Color color = Color()) {
this.text = text;
this.style = style;
this.color = color;
}
public Text.by_instance (Text text) {
this.text = text.text;
this.style = text.style;
this.color = text.color;
}
}
}

98
test/ChartTest.vala
View File

@ -6,14 +6,14 @@ void plot_chart1 (Chart chart) {
var s3 = new Series ();
s1.title = new Text("Series 1"); s1.color = new Color (1, 0, 0);
s1.points = {new Series.Point(0, 0), new Series.Point(2, 1), new Series.Point(1, 3)};
s1.axis_x.position = Series.Axis.Position.HIGH;
s1.points = {new Point(0, 0), new Point(2, 1), new Point(1, 3)};
s1.axis_x.position = Axis.Position.HIGH;
s1.axis_x.format = "%.3Lf";
s2.title = new Text("Series 2"); s2.color = new Color (0, 1, 0);
s2.points = {new Series.Point(5, -3), new Series.Point(25, -18), new Series.Point(-11, 173)};
s2.points = {new Point(5, -3), new Point(25, -18), new Point(-11, 173)};
s3.title = new Text("Series 3"); s3.color = new Color (0, 0, 1);
s3.points = {new Series.Point(9, 17), new Series.Point(2, 10), new Series.Point(122, 31)};
s3.axis_y.position = Series.Axis.Position.HIGH;
s3.points = {new Point(9, 17), new Point(2, 10), new Point(122, 31)};
s3.axis_y.position = Axis.Position.HIGH;
s1.axis_x.min = 0; s1.axis_x.max = 2;
s1.axis_y.min = 0; s1.axis_y.max = 3;
@ -49,14 +49,14 @@ void plot_chart2 (Chart chart) {
var s3 = new Series ();
s1.title = new Text("Series 1"); s1.color = new Color (1, 0, 0);
s1.points = {new Series.Point(-12, 0), new Series.Point(2, 1), new Series.Point(20, 3)};
s2.axis_y.position = Series.Axis.Position.HIGH;
s1.points = {new Point(-12, 0), new Point(2, 1), new Point(20, 3)};
s2.axis_y.position = Axis.Position.HIGH;
s1.axis_x.format = "%.3Lf";
s2.title = new Text("Series 2"); s2.color = new Color (0, 1, 0);
s2.points = {new Series.Point(5, -3), new Series.Point(25, -18), new Series.Point(-11, 173)};
s2.points = {new Point(5, -3), new Point(25, -18), new Point(-11, 173)};
s3.title = new Text("Series 3"); s3.color = new Color (0, 0, 1);
s3.points = {new Series.Point(9, 17), new Series.Point(2, 10), new Series.Point(-15, 31)};
s3.axis_y.position = Series.Axis.Position.HIGH;
s3.points = {new Point(9, 17), new Point(2, 10), new Point(-15, 31)};
s3.axis_y.position = Axis.Position.HIGH;
s1.axis_x.min = -15; s1.axis_x.max = 30;
s1.axis_y.min = 0; s1.axis_y.max = 3;
@ -92,16 +92,16 @@ void plot_chart3 (Chart chart) {
var s3 = new Series ();
s1.title = new Text("Series 1"); s1.color = new Color (1, 0, 0);
s1.points = {new Series.Point(0, 70), new Series.Point(2, 155), new Series.Point(1, -3)};
s1.axis_x.position = Series.Axis.Position.HIGH;
s1.axis_y.position = Series.Axis.Position.HIGH;
s1.points = {new Point(0, 70), new Point(2, 155), new Point(1, -3)};
s1.axis_x.position = Axis.Position.HIGH;
s1.axis_y.position = Axis.Position.HIGH;
s1.axis_x.format = "%.3Lf";
s2.title = new Text("Series 2"); s2.color = new Color (0, 1, 0);
s2.points = {new Series.Point(5, -3), new Series.Point(25, -18), new Series.Point(-11, 173)};
s2.axis_y.position = Series.Axis.Position.HIGH;
s2.points = {new Point(5, -3), new Point(25, -18), new Point(-11, 173)};
s2.axis_y.position = Axis.Position.HIGH;
s3.title = new Text("Series 3"); s3.color = new Color (0, 0, 1);
s3.points = {new Series.Point(9, -17), new Series.Point(2, 10), new Series.Point(122, 31)};
s3.axis_y.position = Series.Axis.Position.HIGH;
s3.points = {new Point(9, -17), new Point(2, 10), new Point(122, 31)};
s3.axis_y.position = Axis.Position.HIGH;
s1.axis_x.min = 0; s1.axis_x.max = 2;
s1.axis_y.min = -20; s1.axis_y.max = 200;
@ -137,27 +137,27 @@ void plot_chart4 (Chart chart) {
var s3 = new Series ();
var s4 = new Series ();
s1.axis_x.type = Series.Axis.Type.DATE_TIME;
s3.axis_x.type = Series.Axis.Type.DATE_TIME;
s4.axis_x.type = Series.Axis.Type.DATE_TIME;
s1.axis_x.type = Axis.Type.DATE_TIME;
s3.axis_x.type = Axis.Type.DATE_TIME;
s4.axis_x.type = Axis.Type.DATE_TIME;
s4.axis_x.dsec_signs = 5;
var now = new DateTime.now_local().to_unix();
var high = (uint64) (253000000000L);
s1.title = new Text("Series 1"); s1.color = new Color (1, 0, 0);
s1.points = {new Series.Point(now, 70), new Series.Point(now - 100000, 155), new Series.Point(now + 100000, 30)};
s1.axis_x.position = Series.Axis.Position.HIGH;
s1.axis_y.position = Series.Axis.Position.HIGH;
s1.points = {new Point(now, 70), new Point(now - 100000, 155), new Point(now + 100000, 30)};
s1.axis_x.position = Axis.Position.HIGH;
s1.axis_y.position = Axis.Position.HIGH;
s2.title = new Text("Series 2"); s2.color = new Color (0, 1, 0);
s2.points = {new Series.Point(5, -3), new Series.Point(25, -18), new Series.Point(-11, 173)};
s2.axis_y.position = Series.Axis.Position.HIGH;
s2.points = {new Point(5, -3), new Point(25, -18), new Point(-11, 173)};
s2.axis_y.position = Axis.Position.HIGH;
s3.title = new Text("Series 3"); s3.color = new Color (0, 0, 1);
s3.points = {new Series.Point(high - 2 + 0.73, -17), new Series.Point(high - 1 + 0.234, 10), new Series.Point(high + 1 + 0.411, 31)};
s3.axis_y.position = Series.Axis.Position.HIGH;
s3.points = {new Point(high - 2 + 0.73, -17), new Point(high - 1 + 0.234, 10), new Point(high + 1 + 0.411, 31)};
s3.axis_y.position = Axis.Position.HIGH;
s4.title = new Text("Series 4"); s4.color = new Color (0.5, 0.3, 0.9);
s4.points = {new Series.Point(high + 0.005, -19.05), new Series.Point(high + 0.0051, 28), new Series.Point(high + 0.0052, 55), new Series.Point(high + 0.0053, 44)};
s4.axis_y.position = Series.Axis.Position.HIGH;
s4.points = {new Point(high + 0.005, -19.05), new Point(high + 0.0051, 28), new Point(high + 0.0052, 55), new Point(high + 0.0053, 44)};
s4.axis_y.position = Axis.Position.HIGH;
s1.axis_x.min = now - 100000; s1.axis_x.max = now + 100000;
s1.axis_y.min = -20; s1.axis_y.max = 200;
@ -239,40 +239,40 @@ int main (string[] args) {
button1.clicked.connect (() => {
chart = chart1; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
switch (chart.legend.position) {
case Chart.Legend.Position.TOP: radio_button1.set_active(true); break;
case Chart.Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Chart.Legend.Position.LEFT: radio_button3.set_active(true); break;
case Chart.Legend.Position.BOTTOM: radio_button4.set_active(true); break;
case Legend.Position.TOP: radio_button1.set_active(true); break;
case Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Legend.Position.LEFT: radio_button3.set_active(true); break;
case Legend.Position.BOTTOM: radio_button4.set_active(true); break;
default: break;
}
});
button2.clicked.connect (() => {
chart = chart2; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
switch (chart.legend.position) {
case Chart.Legend.Position.TOP: radio_button1.set_active(true); break;
case Chart.Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Chart.Legend.Position.LEFT: radio_button3.set_active(true); break;
case Chart.Legend.Position.BOTTOM: radio_button4.set_active(true); break;
case Legend.Position.TOP: radio_button1.set_active(true); break;
case Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Legend.Position.LEFT: radio_button3.set_active(true); break;
case Legend.Position.BOTTOM: radio_button4.set_active(true); break;
default: break;
}
});
button3.clicked.connect (() => {
chart = chart3; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
switch (chart.legend.position) {
case Chart.Legend.Position.TOP: radio_button1.set_active(true); break;
case Chart.Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Chart.Legend.Position.LEFT: radio_button3.set_active(true); break;
case Chart.Legend.Position.BOTTOM: radio_button4.set_active(true); break;
case Legend.Position.TOP: radio_button1.set_active(true); break;
case Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Legend.Position.LEFT: radio_button3.set_active(true); break;
case Legend.Position.BOTTOM: radio_button4.set_active(true); break;
default: break;
}
});
button4.clicked.connect (() => {
chart = chart4; da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
switch (chart.legend.position) {
case Chart.Legend.Position.TOP: radio_button1.set_active(true); break;
case Chart.Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Chart.Legend.Position.LEFT: radio_button4.set_active(true); break;
case Chart.Legend.Position.BOTTOM: radio_button4.set_active(true); break;
case Legend.Position.TOP: radio_button1.set_active(true); break;
case Legend.Position.RIGHT: radio_button2.set_active(true); break;
case Legend.Position.LEFT: radio_button4.set_active(true); break;
case Legend.Position.BOTTOM: radio_button4.set_active(true); break;
default: break;
}
});
@ -303,25 +303,25 @@ int main (string[] args) {
radio_button1.toggled.connect ((button) => {
if (button.get_active()) {
chart.legend.position = Chart.Legend.Position.TOP;
chart.legend.position = Legend.Position.TOP;
da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
}
});
radio_button2.toggled.connect ((button) => {
if (button.get_active()) {
chart.legend.position = Chart.Legend.Position.RIGHT;
chart.legend.position = Legend.Position.RIGHT;
da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
}
});
radio_button3.toggled.connect ((button) => {
if (button.get_active()) {
chart.legend.position = Chart.Legend.Position.LEFT;
chart.legend.position = Legend.Position.LEFT;
da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
}
});
radio_button4.toggled.connect ((button) => {
if (button.get_active()) {
chart.legend.position = Chart.Legend.Position.BOTTOM;
chart.legend.position = Legend.Position.BOTTOM;
da.queue_draw_area(0, 0, da.get_allocated_width(), da.get_allocated_height());
}
});