From 90b7a47cc86846ebdff7ca98f09e1d975dea338d Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Sun, 23 Jun 2019 21:02:10 -0700
Subject: [PATCH] AutoSkip in update

---
 src/core/core.scale.js         | 36 ++++++++++++++++++++++++----------
 test/specs/scale.time.tests.js |  3 +--
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 298d409aa8e..0ddfd267f99 100644
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -240,8 +240,17 @@ var Scale = Element.extend({
 		helpers.callback(this.options.beforeUpdate, [this]);
 	},
 
+	/**
+	 * @param {number} maxWidth - the max width in pixels
+	 * @param {number} maxHeight - the max height in pixels
+	 * @param {object} margins - the space between the edge of the scale and edge of the chart
+	 *   This space comes from two sources:
+	 *     - padding - space that's required to show the labels at the edges of the scale
+	 *     - thickness of scales or legends in another orientation
+	 */
 	update: function(maxWidth, maxHeight, margins) {
 		var me = this;
+		var optionTicks = me.options.ticks;
 		var i, ilen, labels, label, ticks, tick;
 
 		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
@@ -325,9 +334,12 @@ var Scale = Element.extend({
 		me.beforeFit();
 		me.fit();
 		me.afterFit();
-		//
+		// Auto-skip
+		me._ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
+
 		me.afterUpdate();
 
+		// TODO: remove minSize as a public property and return value from all layout boxes. It is unused
 		return me.minSize;
 
 	},
@@ -465,6 +477,7 @@ var Scale = Element.extend({
 			height: 0
 		};
 
+		var chart = me.chart;
 		var ticks = me.getTicks();
 		var opts = me.options;
 		var tickOpts = opts.ticks;
@@ -553,8 +566,13 @@ var Scale = Element.extend({
 
 		me.handleMargins();
 
-		me.width = minSize.width;
-		me.height = minSize.height;
+		if (isHorizontal) {
+			me.width = chart.width - me.margins.left - me.margins.right;
+			me.height = minSize.height;
+		} else {
+			me.width = minSize.width;
+			me.height = chart.height - me.margins.top - me.margins.bottom;
+		}
 	},
 
 	/**
@@ -563,12 +581,10 @@ var Scale = Element.extend({
 	 */
 	handleMargins: function() {
 		var me = this;
-		if (me.margins) {
-			me.margins.left = Math.max(me.paddingLeft, me.margins.left);
-			me.margins.top = Math.max(me.paddingTop, me.margins.top);
-			me.margins.right = Math.max(me.paddingRight, me.margins.right);
-			me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom);
-		}
+		me.margins.left = Math.max(me.paddingLeft, me.margins.left);
+		me.margins.top = Math.max(me.paddingTop, me.margins.top);
+		me.margins.right = Math.max(me.paddingRight, me.margins.right);
+		me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom);
 	},
 
 	afterFit: function() {
@@ -834,7 +850,7 @@ var Scale = Element.extend({
 		var isMirrored = optionTicks.mirror;
 		var isHorizontal = me.isHorizontal();
 
-		var ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
+		var ticks = me.getTicks();
 		var tickFonts = parseTickFontOptions(optionTicks);
 		var tickPadding = optionTicks.padding;
 		var labelOffset = optionTicks.labelOffset;
diff --git a/test/specs/scale.time.tests.js b/test/specs/scale.time.tests.js
index 8939dcb78a7..37652337bd0 100755
--- a/test/specs/scale.time.tests.js
+++ b/test/specs/scale.time.tests.js
@@ -600,10 +600,9 @@ describe('Time scale tests', function() {
 						}],
 					}
 				}
-			});
+			}, {canvas: {width: 800, height: 200}});
 
 			this.scale = this.chart.scales.xScale0;
-			this.scale.update(800, 200);
 		});
 
 		it('should be bounded by nearest step\'s year start and end', function() {