From 9ccb4a7bc728fd0e85c04fddb802fde02b73cfe2 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sun, 29 May 2022 20:44:11 -0500
Subject: add basic color brushing demo

---
 src/Canvas.js | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/Canvas.js')

diff --git a/src/Canvas.js b/src/Canvas.js
index 7f6404b..6dff7bd 100644
--- a/src/Canvas.js
+++ b/src/Canvas.js
@@ -22,6 +22,8 @@ class Canvas {
 		/* callbacks */
 		this.onDraw = null;
 		this.onMouseMove = null;
+		this.onMouseDown = null;
+		this.onMouseUp = null;
 
 		/* register event listeners */
 
@@ -53,9 +55,11 @@ class Canvas {
 		this.element.addEventListener('mousedown', e => {
 			e.preventDefault();
 			if (e.button === 1) this.panning = true;
+			if (this.onMouseDown) this.onMouseDown(e);
 		});
 		this.element.addEventListener('mouseup', e => {
 			if (e.button === 1) this.panning = false;
+			if (this.onMouseUp) this.onMouseUp(e);
 		}); 
 
 		/* mouse leave */
-- 
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