From c7399071b5121ddded1209d9978a6f044f4e5ecc Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Mon, 3 Apr 2017 01:21:54 +0200
Subject: [PATCH] latin: dynamic sample of user input

Experimental feature to concatenate given letters in all rows.
Rough comparison of actual usage (though without any specific script
features, kerning, or other exceptions).
---
 latin.plp | 44 +++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

diff --git a/latin.plp b/latin.plp
index 70c9635..a801e68 100644
--- a/latin.plp
+++ b/latin.plp
@@ -34,7 +34,7 @@ Html({
 		stroke-linecap: round;
 		stroke-linejoin: round;
 	}
-	#code-39 {
+	td {
 		white-space: nowrap;
 	}
 
@@ -94,3 +94,45 @@ else {
 
 :></div>
 
+<script>
+var inputel = document.createElement('INPUT');
+inputel.oninput = function () {
+	var rows = document.getElementsByClassName('glyphs')[0].rows;
+	for (var row of rows) {
+		cols = [ row.cells[0] ];
+		for (var col = 1; col <= 26; col++) {
+			cols[col] = cols[ col - 1 ].nextSibling;
+			for (var span = 1; span < cols[col].colSpan; span++) {
+				var same = cols[col];
+				cols[++col] = same;
+			}
+		}
+		var samplecol = row.getElementsByClassName('sample');
+		if (samplecol.length) {
+			samplecol = samplecol[0];
+		}
+		else {
+			samplecol = row.appendChild(document.createElement('TD'));
+			samplecol.className = 'sample';
+		}
+
+		var output = '';
+		var input = inputel.value.toUpperCase();
+		for (var i = 0; i < input.length; i++) {
+			var col = input.charCodeAt(i) - 64;
+			if (col < 1 || col > 26) {
+				output += ' &nbsp; ';
+			}
+			else {
+				output += cols[col].innerHTML.trimRight();
+			}
+		}
+		samplecol.innerHTML = output;
+	}
+};
+
+var container = document.createElement('P');
+container.appendChild(inputel);
+document.body.appendChild(container);
+
+</script>
-- 
2.30.0