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LibWeb: Allow scrolling overflowed content with the mouse wheel :^)

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This is rather crude, but you can now use the mouse wheel to scroll up
and down in block-level boxes with clipped overflowing content.
There's no limit to how far you can scroll in either direction, since
we don't yet track how much overflow there is. But it's a start. :^)
This commit is contained in:
Andreas Kling 2021-02-22 19:48:24 +01:00
parent ded8c728d2
commit cd79b807dd
5 changed files with 44 additions and 0 deletions
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Userland/Libraries/LibWeb/Layout/Node.h
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@ -109,6 +109,7 @@ public:
virtual void handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers);
virtual void handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers);
virtual void handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers);
virtual void handle_mousewheel(Badge<EventHandler>, const Gfx::IntPoint&, unsigned buttons, unsigned modifiers, int wheel_delta);
virtual void before_children_paint(PaintContext&, PaintPhase) {};
virtual void paint(PaintContext&, PaintPhase);