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Add snap to window edge framework

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Adds functions for calculation of distances between window edges, as
well as for window growing and shrinking.

All calculations are based on the "pending" geometry.

Ignored from snapping:

 - views that do not share the same output
 - minimized views
 - maximized views
 - views that are neither:
   - part of the current workspace
   - part of the always-on-top tree
This commit is contained in:
Axel Burri 2023-08-05 23:53:01 +02:00 • committed by Johan Malm
parent 5176ac4f64
commit 1d72a08916
3 changed files with 297 additions and 0 deletions
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include/snap.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef LABWC_SNAP_H
#define LABWC_SNAP_H
#include "common/border.h"
#include "view.h"
struct wlr_box;
struct border snap_get_max_distance(struct view *view);
void snap_vector_to_next_edge(struct view *view, enum view_edge direction, int *dx, int *dy);
int snap_distance_to_next_edge(struct view *view, enum view_edge direction);
void snap_grow_to_next_edge(struct view *view, enum view_edge direction, struct wlr_box *geo);
void snap_shrink_to_next_edge(struct view *view, enum view_edge direction, struct wlr_box *geo);
#endif /* LABWC_SNAP_H */