From 495ddb649b5347f480413e0a19a193bf091ed51b Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@lemstra.org>
Date: Sat, 25 Nov 2023 14:19:52 +0100
Subject: [PATCH] Added DrawableStrokeWidth.

---
 src/drawables/drawable-stroke-width.ts        | 24 ++++++++++++++++
 src/drawables/drawing-wand.ts                 |  7 +++++
 tests/drawables/drawable-stroke-width.spec.ts | 28 +++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 src/drawables/drawable-stroke-width.ts
 create mode 100644 tests/drawables/drawable-stroke-width.spec.ts

diff --git a/src/drawables/drawable-stroke-width.ts b/src/drawables/drawable-stroke-width.ts
new file mode 100644
index 00000000..e468adb7
--- /dev/null
+++ b/src/drawables/drawable-stroke-width.ts
@@ -0,0 +1,24 @@
+// Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.
+// Licensed under the Apache License, Version 2.0.
+
+import { IDrawable } from './drawable';
+import { IDrawingWand } from './drawing-wand';
+
+/**
+ * Sets the width of the stroke used to draw object outlines.
+ */
+export class DrawableStrokeWidth implements IDrawable {
+    private readonly _width: number;
+
+    /**
+     * Initializes a new instance of the {@link DrawableStrokeWidth} class.
+     * @param width - The width.
+     */
+    constructor(width: number) {
+        this._width = width;
+    }
+
+    draw(wand: IDrawingWand): void {
+        wand.strokeWidth(this._width);
+    }
+}
diff --git a/src/drawables/drawing-wand.ts b/src/drawables/drawing-wand.ts
index 6b766649..aa2fe1ee 100644
--- a/src/drawables/drawing-wand.ts
+++ b/src/drawables/drawing-wand.ts
@@ -32,6 +32,7 @@ export interface IDrawingWand extends IDisposable {
     rectangle(upperLeftX: number, upperLeftY: number, lowerRightX: number, lowerRightY: number): void;
     roundRectangle(upperLeftX: number, upperLeftY: number, lowerRightX: number, lowerRightY: number, cornerWidth: number, cornerHeight: number): void;
     strokeColor(value: IMagickColor): void;
+    strokeWidth(value: number): void
     text(x: number, y: number, value: string): void;
     textAlignment(value: TextAlignment): void;
     textAntialias(value: boolean): void;
@@ -134,6 +135,12 @@ export class DrawingWand extends NativeInstance implements IDrawingWand {
         });
     }
 
+    strokeWidth(value: number): void {
+        Exception.usePointer(exception => {
+            ImageMagick._api._DrawingWand_StrokeWidth(this._instance, value, exception);
+        });
+    }
+
     text(x: number, y: number, value: string): void {
         Exception.usePointer(exception => {
             _withString(value, valuePtr => {
diff --git a/tests/drawables/drawable-stroke-width.spec.ts b/tests/drawables/drawable-stroke-width.spec.ts
new file mode 100644
index 00000000..bd75fe0b
--- /dev/null
+++ b/tests/drawables/drawable-stroke-width.spec.ts
@@ -0,0 +1,28 @@
+// Copyright Dirk Lemstra https://github.com/dlemstra/magick-wasm.
+// Licensed under the Apache License, Version 2.0.
+
+import { DrawableLine } from '@src/drawables/drawable-line';
+import { DrawableStrokeColor } from '@src/drawables/drawable-stroke-color';
+import { DrawableStrokeWidth } from '@src/drawables/drawable-stroke-width';
+import { MagickColors } from '@src/magick-colors';
+import { TestImages } from '@test/test-images';
+
+describe('DrawableStrokeWidth', () => {
+    it('should change the width of a line', () => {
+        TestImages.empty150x150Canvas.use((image) => {
+            const strokeColor = MagickColors.Green;
+
+            image.draw([
+                new DrawableStrokeColor(strokeColor),
+                new DrawableStrokeWidth(10),
+                new DrawableLine(10, 10, 40, 50)
+            ]);
+
+            expect(image).toHavePixelWithColor(9, 9, MagickColors.White);
+            expect(image).toHavePixelWithColor(10, 10, strokeColor);
+            expect(image).toHavePixelWithColor(6, 13, strokeColor);
+            expect(image).toHavePixelWithColor(44, 47, strokeColor);
+            expect(image).toHavePixelWithColor(40, 50, strokeColor);
+        });
+    });
+});