viscal

commit 4f6087d37cb22082261d3ab5c170c19a92a107ed
Author: William Casarin <bill@casarin.me>
Date:   Thu, 12 Jan 2017 19:44:00 -0800

My first attempt at a calendar app

That doesn't suck

Diffstat:
A
Event.vala
 | 
4
++++
A
Makefile
 | 
5
+++++
A
calendar.vala
 | 
84
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 93 insertions(+), 0 deletions(-)
diff --git a/Event.vala b/Event.vala
@@ -0,0 +1,4 @@
+
+public class Event {
+	public DateTime start;
+}
diff --git a/Makefile b/Makefile
@@ -0,0 +1,5 @@
+
+all: calendar
+
+calendar: calendar.vala Event.vala
+	valac --pkg gtk+-3.0 $^
diff --git a/calendar.vala b/calendar.vala
@@ -0,0 +1,83 @@
+
+using Gtk;
+using Cairo;
+
+public class Calendar : Gtk.Window {
+
+    private const int SIZE = 30;
+    private const int GAP = 20;
+	private const double dashed[] = {1.0};
+
+    public Calendar () {
+        this.title = "Cairo Vala Demo";
+        this.destroy.connect (Gtk.main_quit);
+        set_default_size (450, 550);
+        create_widgets ();
+    }
+
+    private void create_widgets () {
+        var drawing_area = new DrawingArea ();
+        drawing_area.draw.connect (on_draw);
+        add (drawing_area);
+    }
+
+    private void draw_event (Context ctx, Event ev) {
+	}
+
+	private void draw_hours (Context ctx, int width, int height) {
+		double hour_height = ((double)height) / 24.0;
+		const double col = 0.35;
+        ctx.set_source_rgb (col, col, col);
+		ctx.set_line_width (1);
+		for (int hour = 1; hour < 24; hour++) {
+			double y = ((double)hour) * hour_height;
+			ctx.move_to (GAP, y+GAP);
+			ctx.rel_line_to (width, 0);
+
+			if (hour % 2 == 0)
+			  ctx.set_dash (dashed, 0);
+			else
+			  ctx.set_dash ({}, 0);
+
+			ctx.stroke();
+		}
+	}
+
+	private void draw_background (Context ctx, int width, int height) {
+        ctx.set_source_rgb (0.3, 0.3, 0.3);
+	    rectangle(ctx, width, height);
+		ctx.fill();
+	}
+
+    private bool on_draw (Widget da, Context ctx) {
+		int width, height;
+		this.get_size(out width, out height);
+		width -= GAP*2; height -= GAP*2;
+
+		ctx.move_to (GAP, GAP);
+		draw_background(ctx, width, height);
+
+		// ctx.move_to (GAP, GAP);
+		draw_hours(ctx, width, height);
+
+        return true;
+    }
+
+    private void rectangle (Context ctx, double x, double y) {
+        ctx.rel_line_to (x, 0);
+        ctx.rel_line_to (0, y);
+        ctx.rel_line_to (-x, 0);
+        ctx.close_path ();
+    }
+
+    static int main (string[] args) {
+        Gtk.init (ref args);
+
+        var cairo_sample = new Calendar ();
+        cairo_sample.show_all ();
+
+        Gtk.main ();
+
+        return 0;
+    }
+}+
\ No newline at end of file