1 files changed, 9 insertions, 0 deletions
diff --git a/src/lib.ts b/src/lib.ts
index 6299345..9849006 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -59,11 +59,20 @@ export function getNumTrailingZeros(n: number): number {
 	}
 	throw new Error('Exceeded floating point precision');
 }
+// Removes a class from an element, triggers reflow, then adds the class
 export function animateWithClass(el: HTMLElement, className: string){
 	el.classList.remove(className);
 	el.offsetWidth; // Triggers reflow
 	el.classList.add(className);
 }
+// For estimating text width (via https://stackoverflow.com/questions/118241/calculate-text-width-with-javascript)
+const _getTextWidthCanvas = document.createElement('canvas');
+export function getTextWidth(text: string, font: string): number {
+	const context = _getTextWidthCanvas.getContext('2d')!;
+	context.font = font;
+	const metrics = context.measureText(text);
+	return metrics.width;
+}
 
 // For calendar conversion (mostly copied from backend/hist_data/cal.py)
 export function gregorianToJdn(year: number, month: number, day: number): number {