Move measureTextWidths to render/canvas

src/ol/render/canvas.js

@@ -324,6 +324,25 @@ export function measureTextWidth(font, text) {
 }
 
 
+/**
+ * @param {string} font Font to use for measuring.
+ * @param {Array<string>} lines Lines to measure.
+ * @param {Array<number>} widths Array will be populated with the widths of
+ * each line.
+ * @return {number} Width of the whole text.
+ */
+export function measureTextWidths(font, lines, widths) {
+  const numLines = lines.length;
+  let width = 0;
+  for (let i = 0; i < numLines; ++i) {
+    const currentWidth = measureTextWidth(font, lines[i]);
+    width = Math.max(width, currentWidth);
+    widths.push(currentWidth);
+  }
+  return width;
+}
+
+
 /**
  * @param {CanvasRenderingContext2D} context Context.
  * @param {number} rotation Rotation.