RGBCube/serenity
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3 commits

Author SHA1 Message Date
Marcus Nilsson
d660e86d13 LibGUI: Implement automatic scrolling in AbstractView 
This adds automatic scrolling when dragging items in TreeViews and other
widgets that inherit from AbstractView when the overloaded
accepts_drag() returns true. This is implemented in FileSystemModel to
allow directories and files to be dragged.
 2021-09-29 23:58:55 +02:00
Marcus Nilsson
eec411c508 LibGUI: Add a AutoScroll timer to AbstractScrollableWidget 
This commit adds a timer to AbstractScrollableWidget that can be used
when implementing automatic scrolling. By overriding
on_automatic_scrolling_timer_fired() we can calculate the scrolling
delta when dragging objects, and redraw as needed. A helper function,
automatic_scroll_delta_from_position() gives us a delta that
we can use to calculate speed and direction. By default
m_autoscroll_threshold is 20 pixels from the edge, and gives a linear
change in scroll delta.
 2021-09-16 22:29:21 +02:00
Andreas Kling
d47f15ab8b LibGUI: Rename ScrollableWidget => AbstractScrollableWidget 2021-05-03 21:03:13 +02:00
Renamed from Userland/Libraries/LibGUI/ScrollableWidget.h (Browse further)