Is there a nice way of achieving the following, without any additional mark-up? It would be fine to use JavaScript though.
For a given element of text, use a text range to find the end of the first line, then wrap the remaining text in a child div. Repeat recursively, using the child div for the next iteration.
This works cross-browser: http://jsfiddle.net/gilly3/CmguZ/4/
It's easiest in IE thanks to textRange.moveToPoint(x, y)
:
function indent(div) {
var rng = document.body.createTextRange();
rng.moveToElementText(div);
var x = rng.getBoundingClientRect().right;
rng.collapse();
var rect = rng.getBoundingClientRect();
var y = rect.bottom;
rng.moveToPoint(x - 1, y - 1);
rng.moveEnd("textedit");
var html = "" + rng.text + "";
rng.pasteHTML(html);
div = $(".indent", div)[0];
rng.moveToElementText(div);
var pos = rng.getBoundingClientRect();
if (pos.bottom > rect.bottom) {
indent(div);
}
}
With other browsers, you have to iterate the text to find where the line wraps:
function indent(div) {
var rng = document.createRange();
rng.selectNodeContents(div);
var len = rng.toString().length;
var start = rng.toString().search(/.\s/);
if (start < 0) return;
var txt = div.childNodes[0];
rng.setEnd(txt, start);
var startRect = rng.getBoundingClientRect();
var rect;
for (var i = start + 1; i < len; i++) {
rng.setEnd(txt, i);
rect = rng.getBoundingClientRect();
if (rect.bottom > startRect.bottom) {
rng.setStart(txt, i-1);
rng.setEnd(txt, len);
div = document.createElement("div");
div.className = "indent";
rng.surroundContents(div);
indent(div);
break;
}
}
}