From 42b846fa75fee632bc85ab33482af1fda294dae9 Mon Sep 17 00:00:00 2001
From: Kolan Sh <backbone@backbone.ws>
Date: Fri, 6 Oct 2017 22:46:28 +0300
Subject: [PATCH] Fix width/height when context is out of the Chart.

---
 src/Chart.vala      | 17 ++++-------------
 test/ChartTest.vala |  2 ++
 2 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/src/Chart.vala b/src/Chart.vala
index 1328fe7..281f4a8 100644
--- a/src/Chart.vala
+++ b/src/Chart.vala
@@ -1,8 +1,8 @@
 namespace Gtk.CairoChart {
 	public class Chart {
 
-		protected double width = 0;
-		protected double height = 0;
+		public double width = 0;
+		public double height = 0;
 
 		public Cairo.Context context = null;
 
@@ -35,9 +35,9 @@ namespace Gtk.CairoChart {
 		}
 
 		protected double cur_x_min = 0.0;
-		protected double cur_x_max = 0.0;
+		protected double cur_x_max = 1.0;
 		protected double cur_y_min = 0.0;
-		protected double cur_y_max = 0.0;
+		protected double cur_y_max = 1.0;
 
 		public virtual void check_cur_values () {
 			if (cur_x_min > cur_x_max)
@@ -48,8 +48,6 @@ namespace Gtk.CairoChart {
 
 		public virtual bool draw () {
 
-			update_size ();
-
 			draw_background ();
 
 			cur_x_min = cur_y_min = 0.0;
@@ -84,13 +82,6 @@ namespace Gtk.CairoChart {
 			return true;
 		}
 
-		protected virtual void update_size () {
-			if (context != null) {
-				width = context.copy_clip_rectangle_list().rectangles[0].width;
-				height = context.copy_clip_rectangle_list().rectangles[0].height;
-			}
-		}
-
 		protected virtual void set_source_rgba (Color color) {
 				context.set_source_rgba (color.red, color.green, color.blue, color.alpha);
 		}
diff --git a/test/ChartTest.vala b/test/ChartTest.vala
index 1cfb4a9..f3db13a 100644
--- a/test/ChartTest.vala
+++ b/test/ChartTest.vala
@@ -341,6 +341,8 @@ int main (string[] args) {
 	    // user's pre draw operations here...
 
 		chart.context = context;
+		chart.width = da.get_allocated_width();
+		chart.height = da.get_allocated_height();
 		/*var ret = */chart.draw();
 
 	    // user's post draw operations here...