From: Evert Timberg <evert.timberg@gmail.com>
Date: Mon, 28 Dec 2015 14:37:31 +0000 (-0500)
Subject: Alias the pixel for nicer drawing
X-Git-Tag: v2.0.0~88^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1836%2Fhead;p=thirdparty%2FChart.js.git

Alias the pixel for nicer drawing
---

diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 8b8d791cf..532208fef 100644
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -637,8 +637,12 @@
 
 				if (this.isHorizontal()) {
 					y1 = y2 = this.options.position === 'top' ? this.bottom : this.top;
+					y1 += helpers.aliasPixel(this.ctx.lineWidth);
+					y2 += helpers.aliasPixel(this.ctx.lineWidth);
 				} else {
 					x1 = x2 = this.options.position === 'left' ? this.right : this.left;
+					x1 += helpers.aliasPixel(this.ctx.lineWidth);
+					x2 += helpers.aliasPixel(this.ctx.lineWidth);
 				}
 
 				this.ctx.moveTo(x1, y1);
diff --git a/test/scale.linear.tests.js b/test/scale.linear.tests.js
index cc36b7b18..5cceb21b7 100644
--- a/test/scale.linear.tests.js
+++ b/test/scale.linear.tests.js
@@ -986,10 +986,10 @@ describe('Linear Scale', function() {
 			"args": ["rgba(0, 0, 0, 0.1)"]
 		}, {
 			"name": "moveTo",
-			"args": [0, 100]
+			"args": [0, 100.5]
 		}, {
 			"name": "lineTo",
-			"args": [200, 100]
+			"args": [200, 100.5]
 		}, {
 			"name": "stroke",
 			"args": []
@@ -1059,10 +1059,10 @@ describe('Linear Scale', function() {
 			"args": ["rgba(0, 0, 0, 0.1)"]
 		}, {
 			"name": "moveTo",
-			"args": [0, 100]
+			"args": [0, 100.5]
 		}, {
 			"name": "lineTo",
-			"args": [200, 100]
+			"args": [200, 100.5]
 		}, {
 			"name": "stroke",
 			"args": []
@@ -1518,10 +1518,10 @@ describe('Linear Scale', function() {
 			"args": ["rgba(0, 0, 0, 0.1)"]
 		}, {
 			"name": "moveTo",
-			"args": [30, 0]
+			"args": [30.5, 0]
 		}, {
 			"name": "lineTo",
-			"args": [30, 300]
+			"args": [30.5, 300]
 		}, {
 			"name": "stroke",
 			"args": []
@@ -1649,10 +1649,10 @@ describe('Linear Scale', function() {
 			"args": ["rgba(0, 0, 0, 0.1)"]
 		}, {
 			"name": "moveTo",
-			"args": [30, 0]
+			"args": [30.5, 0]
 		}, {
 			"name": "lineTo",
-			"args": [30, 300]
+			"args": [30.5, 300]
 		}, {
 			"name": "stroke",
 			"args": []
@@ -1906,10 +1906,10 @@ describe('Linear Scale', function() {
 			"args": ["rgba(0, 0, 0, 0.1)"]
 		}, {
 			"name": "moveTo",
-			"args": [30, 0]
+			"args": [30.5, 0]
 		}, {
 			"name": "lineTo",
-			"args": [30, 300]
+			"args": [30.5, 300]
 		}, {
 			"name": "stroke",
 			"args": []