Andreas Kling 706fc3d1aa LibWeb: Paint the text selection :^) ...

Text selection currently works at the LayoutNode level. The root of the
layout tree has a LayoutRange selection() which in turn has two
LayoutPosition objects: start() and end().

A LayoutPosition is a LayoutNode + a text offset into that node.

We handle the selection painting in LayoutText::paint_fragment(), after
the normal painting is finished. The basic mechanism is that each
LayoutFragment is queried for its selection_rect(), and if a non-empty
rect is returned, we clip to it and paint the text once more.

2020-06-29 00:39:51 +02:00

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