Apply clip area on the labels/captions considering the padding

[stockiNail]

Currently before drawing a caption or a label, the area of the element will be clipped.

But the full element size is clipped, instead it should clip an area considering the padding set in the configuration.

chartjs-chart-treemap/src/element.js

Lines 90 to 96 in 94efad8

	function drawText(ctx, rect, item, levels) {
	const opts = rect.options;
	const captions = opts.captions;
	ctx.save();
	ctx.beginPath();
	ctx.rect(rect.x, rect.y, rect.width, rect.height);
	ctx.clip();

This is a breaking change because it could change how the labels or captions will be cut.

[kurkle]

This one could be considered a bug instead of breaking change. That said, I think it's ok to delay until v3 and then the breaking change label is fine.

[stockiNail]

Yes it could be. Sorry if I have seen only this morning. Anyway no issue till now!

[stockiNail]

@kurkle I meant that till now the current logic (without considering the padding) seems to be good for the users. This is the reason why I didn't tag as bug.

[stockiNail]

@kurkle anyway if you want I can do it as bug fixing. I have already started but I stopped me because it sounded a breaking change.