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interactive: set grab parameters at cursor press

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Add interactive_set_grab_context() which is called when the mouse button
is first pressed, before interactive_begin(). This fixes two small issues:

- The cursor origin position for interactive move/resize was slightly
  off (depending on mouse resolution), because it was set after the
  mouse had already moved slightly. Now it's exact.

- If app- or keybind-initiated maximize (etc.) happened after the button
  press but before the mouse was moved, then interactive_begin() would
  still start move/resize even though the view might now be far away
  from the cursor. Now interactive_cancel() works as expected, even if
  called before interactive_begin().

Also, make sure to call interactive_cancel() for un-maximize as well.
This commit is contained in:
John Lindgren 2026-02-09 23:49:42 -05:00 • committed by Johan Malm
parent 3ea46ba45a
commit a672e8a9fd
7 changed files with 90 additions and 36 deletions
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include/labwc.h
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@ -414,6 +414,7 @@ void seat_focus_override_end(struct seat *seat, bool restore_focus);
*/
void interactive_anchor_to_cursor(struct server *server, struct wlr_box *geo);
void interactive_set_grab_context(struct cursor_context *ctx);
void interactive_begin(struct view *view, enum input_mode mode,
enum lab_edge edges);
void interactive_finish(struct view *view);