error on too small signature

2024-03-10 19:55:45 +02:00
parent e56dcb59c0
commit f02315726d
3 changed files with 16 additions and 6 deletions
@@ -1,4 +1,4 @@
-function cropCanvasAndExportToPNG (canvas) {
+function cropCanvasAndExportToPNG (canvas, { errorOnTooSmall } = { errorOnTooSmall: false }) {
  const ctx = canvas.getContext('2d')

  const width = canvas.width
@@ -33,6 +33,10 @@ function cropCanvasAndExportToPNG (canvas) {
  croppedCanvas.height = croppedHeight
  const croppedCtx = croppedCanvas.getContext('2d')

+  if (errorOnTooSmall && (croppedWidth < 20 || croppedHeight < 20)) {
+    return Promise.reject(new Error('Image too small'))
+  }
+
  croppedCtx.drawImage(canvas, leftmost, topmost, croppedWidth, croppedHeight, 0, 0, croppedWidth, croppedHeight)

  return new Promise((resolve, reject) => {