From c12ca17e38f77bd605d0be894f8ddb4bd610fa52 Mon Sep 17 00:00:00 2001
From: Ben McCann <322311+benmccann@users.noreply.github.com>
Date: Fri, 15 Nov 2019 04:49:41 -0800
Subject: [PATCH] Remove unused helpers.canvas.roundedRect (#6734)

---
 docs/getting-started/v3-migration.md          |   1 +
 src/helpers/helpers.canvas.js                 |  42 ------------
 test/fixtures/helpers.canvas/rounded-rect.js  |  39 -----------
 test/fixtures/helpers.canvas/rounded-rect.png | Bin 13050 -> 0 bytes
 test/specs/helpers.canvas.tests.js            |  64 ------------------
 5 files changed, 1 insertion(+), 145 deletions(-)
 delete mode 100644 test/fixtures/helpers.canvas/rounded-rect.js
 delete mode 100644 test/fixtures/helpers.canvas/rounded-rect.png

diff --git a/docs/getting-started/v3-migration.md b/docs/getting-started/v3-migration.md
index 4d8f0f779..a797db8e2 100644
--- a/docs/getting-started/v3-migration.md
+++ b/docs/getting-started/v3-migration.md
@@ -56,6 +56,7 @@ Chart.js is no longer providing the `Chart.bundle.js` and `Chart.bundle.min.js`.
 * `helpers.numberOfLabelLines`
 * `helpers.previousItem`
 * `helpers.removeEvent`
+* `helpers.roundedRect`
 * `helpers.scaleMerge`
 * `Scale.getRightValue`
 * `Scale.mergeTicksOptions`
diff --git a/src/helpers/helpers.canvas.js b/src/helpers/helpers.canvas.js
index 2a3b4cba0..a34160d5b 100644
--- a/src/helpers/helpers.canvas.js
+++ b/src/helpers/helpers.canvas.js
@@ -33,48 +33,6 @@ module.exports = {
 		chart.ctx.clearRect(0, 0, chart.width, chart.height);
 	},
 
-	/**
-	 * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
-	 * given size (width, height) and the same `radius` for all corners.
-	 * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
-	 * @param {number} x - The x axis of the coordinate for the rectangle starting point.
-	 * @param {number} y - The y axis of the coordinate for the rectangle starting point.
-	 * @param {number} width - The rectangle's width.
-	 * @param {number} height - The rectangle's height.
-	 * @param {number} radius - The rounded amount (in pixels) for the four corners.
-	 * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
-	 */
-	roundedRect: function(ctx, x, y, width, height, radius) {
-		if (radius) {
-			var r = Math.min(radius, height / 2, width / 2);
-			var left = x + r;
-			var top = y + r;
-			var right = x + width - r;
-			var bottom = y + height - r;
-
-			ctx.moveTo(x, top);
-			if (left < right && top < bottom) {
-				ctx.arc(left, top, r, -PI, -HALF_PI);
-				ctx.arc(right, top, r, -HALF_PI, 0);
-				ctx.arc(right, bottom, r, 0, HALF_PI);
-				ctx.arc(left, bottom, r, HALF_PI, PI);
-			} else if (left < right) {
-				ctx.moveTo(left, y);
-				ctx.arc(right, top, r, -HALF_PI, HALF_PI);
-				ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
-			} else if (top < bottom) {
-				ctx.arc(left, top, r, -PI, 0);
-				ctx.arc(left, bottom, r, 0, PI);
-			} else {
-				ctx.arc(left, top, r, -PI, PI);
-			}
-			ctx.closePath();
-			ctx.moveTo(x, y);
-		} else {
-			ctx.rect(x, y, width, height);
-		}
-	},
-
 	drawPoint: function(ctx, style, radius, x, y, rotation) {
 		var type, xOffset, yOffset, size, cornerRadius;
 		var rad = (rotation || 0) * RAD_PER_DEG;
diff --git a/test/fixtures/helpers.canvas/rounded-rect.js b/test/fixtures/helpers.canvas/rounded-rect.js
deleted file mode 100644
index cbdedacc3..000000000
--- a/test/fixtures/helpers.canvas/rounded-rect.js
+++ /dev/null
@@ -1,39 +0,0 @@
-var roundedRect = Chart.helpers.canvas.roundedRect;
-
-module.exports = {
-	config: {
-		type: 'line',
-		plugins: [{
-			afterDraw: function(chart) {
-				var ctx = chart.ctx;
-				ctx.strokeStyle = '#0000ff';
-				ctx.lineWidth = 4;
-				ctx.fillStyle = '#00ff00';
-				ctx.beginPath();
-				roundedRect(ctx, 10, 10, 50, 50, 25);
-				roundedRect(ctx, 70, 10, 100, 50, 25);
-				roundedRect(ctx, 10, 70, 50, 100, 25);
-				roundedRect(ctx, 70, 70, 100, 100, 25);
-				roundedRect(ctx, 180, 10, 50, 50, 100);
-				roundedRect(ctx, 240, 10, 100, 50, 100);
-				roundedRect(ctx, 180, 70, 50, 100, 100);
-				roundedRect(ctx, 240, 70, 100, 100, 100);
-				roundedRect(ctx, 350, 10, 50, 50, 0);
-				ctx.fill();
-				ctx.stroke();
-			}
-		}],
-		options: {
-			scales: {
-				xAxes: [{display: false}],
-				yAxes: [{display: false}]
-			}
-		}
-	},
-	options: {
-		canvas: {
-			height: 256,
-			width: 512
-		}
-	}
-};
diff --git a/test/fixtures/helpers.canvas/rounded-rect.png b/test/fixtures/helpers.canvas/rounded-rect.png
deleted file mode 100644
index 8973c9d30a0c84bdf158aa1881638536f8798e7d..0000000000000000000000000000000000000000
GIT binary patch
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diff --git a/test/specs/helpers.canvas.tests.js b/test/specs/helpers.canvas.tests.js
index 9654ef28e..3a5fbb836 100644
--- a/test/specs/helpers.canvas.tests.js
+++ b/test/specs/helpers.canvas.tests.js
@@ -23,70 +23,6 @@ describe('Chart.helpers.canvas', function() {
 		});
 	});
 
-	describe('roundedRect', function() {
-		it('should create a rounded rectangle path', function() {
-			var context = window.createMockContext();
-
-			helpers.canvas.roundedRect(context, 10, 20, 30, 40, 5);
-
-			expect(context.getCalls()).toEqual([
-				{name: 'moveTo', args: [10, 25]},
-				{name: 'arc', args: [15, 25, 5, -Math.PI, -Math.PI / 2]},
-				{name: 'arc', args: [35, 25, 5, -Math.PI / 2, 0]},
-				{name: 'arc', args: [35, 55, 5, 0, Math.PI / 2]},
-				{name: 'arc', args: [15, 55, 5, Math.PI / 2, Math.PI]},
-				{name: 'closePath', args: []},
-				{name: 'moveTo', args: [10, 20]}
-			]);
-		});
-		it('should optimize path if radius is exactly half of height', function() {
-			var context = window.createMockContext();
-
-			helpers.canvas.roundedRect(context, 10, 20, 40, 30, 15);
-
-			expect(context.getCalls()).toEqual([
-				{name: 'moveTo', args: [10, 35]},
-				{name: 'moveTo', args: [25, 20]},
-				{name: 'arc', args: [35, 35, 15, -Math.PI / 2, Math.PI / 2]},
-				{name: 'arc', args: [25, 35, 15, Math.PI / 2, Math.PI * 3 / 2]},
-				{name: 'closePath', args: []},
-				{name: 'moveTo', args: [10, 20]}
-			]);
-		});
-		it('should optimize path if radius is exactly half of width', function() {
-			var context = window.createMockContext();
-
-			helpers.canvas.roundedRect(context, 10, 20, 30, 40, 15);
-
-			expect(context.getCalls()).toEqual([
-				{name: 'moveTo', args: [10, 35]},
-				{name: 'arc', args: [25, 35, 15, -Math.PI, 0]},
-				{name: 'arc', args: [25, 45, 15, 0, Math.PI]},
-				{name: 'closePath', args: []},
-				{name: 'moveTo', args: [10, 20]}
-			]);
-		});
-		it('should optimize path if radius is exactly half of width and height', function() {
-			var context = window.createMockContext();
-
-			helpers.canvas.roundedRect(context, 10, 20, 30, 30, 15);
-
-			expect(context.getCalls()).toEqual([
-				{name: 'moveTo', args: [10, 35]},
-				{name: 'arc', args: [25, 35, 15, -Math.PI, Math.PI]},
-				{name: 'closePath', args: []},
-				{name: 'moveTo', args: [10, 20]}
-			]);
-		});
-		it('should optimize path if radius is 0', function() {
-			var context = window.createMockContext();
-
-			helpers.canvas.roundedRect(context, 10, 20, 30, 40, 0);
-
-			expect(context.getCalls()).toEqual([{name: 'rect', args: [10, 20, 30, 40]}]);
-		});
-	});
-
 	describe('isPointInArea', function() {
 		it('should determine if a point is in the area', function() {
 			var isPointInArea = helpers.canvas._isPointInArea;