make duration proportional to length of segment

app/static/js/utils.js

@@ -137,3 +137,18 @@ function onVisibilityChange(el, callback) {
 function parseTime(value) {
     return value.split(":").map(p => parseFloat(p)).reduce((c, p) => { return c*60 + p}, 0)
 }
+
+
+function splitText(text, duration) {
+    var parts = []
+    text = text.replace(/<br\ \/>/g, '<br>').replace(/<br\/>/g, '<br>')
+    var length = text.replace(/<br>/g, '').length
+    var texts = text.split('<br>')
+    texts.forEach(part => {
+        parts.push({
+            value: part.trim(),
+            duration: duration / length * part.length
+        })
+    })
+    return parts
+}