From 01c10879782adcd916daac8c9cdab644ebadbbd2 Mon Sep 17 00:00:00 2001
From: Caleb Evans <caleb@calebevans.me>
Date: Sun, 9 Jun 2024 11:46:13 -0700
Subject: [PATCH] Add support for willReadFrequently flag

---
 src/jcanvas.d.ts | 1 +
 src/jcanvas.ts   | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/jcanvas.d.ts b/src/jcanvas.d.ts
index eff1658..e1bffae 100644
--- a/src/jcanvas.d.ts
+++ b/src/jcanvas.d.ts
@@ -378,6 +378,7 @@ interface JCanvasDefaults {
 	type: keyof JCanvasMaps["drawings"] | null;
 	visible: boolean;
 	width: number | null;
+	willReadFrequently: boolean;
 	x: number;
 	y: number;
 	each?: (
diff --git a/src/jcanvas.ts b/src/jcanvas.ts
index 5d5ccb3..56eb3e1 100644
--- a/src/jcanvas.ts
+++ b/src/jcanvas.ts
@@ -204,6 +204,7 @@ class jCanvasDefaults implements JCanvasDefaults {
 	type: keyof (typeof maps)["drawings"] | null = null;
 	visible: boolean = true;
 	width: number | null = null;
+	willReadFrequently: boolean = false;
 	x: number = 0;
 	y: number = 0;
 	[key: `x${number}`]: number;
@@ -265,7 +266,13 @@ function _isCanvas(element: HTMLElement): element is HTMLCanvasElement {
 function _getContext(
 	canvas: HTMLCanvasElement
 ): CanvasRenderingContext2D | null {
-	return canvas.getContext("2d");
+	if ($.jCanvas.defaults.willReadFrequently) {
+		return canvas.getContext("2d", {
+			willReadFrequently: $.jCanvas.defaults.willReadFrequently,
+		});
+	} else {
+		return canvas.getContext("2d");
+	}
 }
 
 // Coerce designated number properties from strings to numbers