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core/place: Introduce window_distance_cmp

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This commit introduces a new comparator, window_distance_cmp,
which uses either the top left or top right corner of a given window, based
on LTR, as reference for the squared distance.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4202>
This commit is contained in:
Mattia Formichetti 2025-02-11 02:54:49 +01:00 committed by Marge Bot
parent 45052aeafd
commit c606d1e670
1 changed files with 46 additions and 0 deletions
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46
src/core/place.c
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@ -53,6 +53,52 @@ typedef enum
META_BOTTOM
} MetaWindowDirection;
typedef struct
{
MtkRectangle area;
MtkRectangle window;
gboolean ltr;
} WindowDistanceComparisonData;
static gint
window_distance_cmp (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
MetaWindow *aw = (gpointer) a;
MetaWindow *bw = (gpointer) b;
WindowDistanceComparisonData *data = user_data;
MtkRectangle *area = &data->area;
MtkRectangle *window = &data->window;
MtkRectangle a_frame;
MtkRectangle b_frame;
int from_origin_a;
int from_origin_b;
int ax, ay, bx, by;
int corner_x, corner_y;
meta_window_get_frame_rect (aw, &a_frame);
meta_window_get_frame_rect (bw, &b_frame);
ax = a_frame.x - area->x;
ay = a_frame.y - area->y;
bx = b_frame.x - area->x;
by = b_frame.y - area->y;
corner_x = area->width / 2 + ((data->ltr ? -1 : 1) * window->width / 2);
corner_y = area->height / 2 - window->height / 2;
from_origin_a = (corner_x - ax) * (corner_x - ax) +
(corner_y - ay) * (corner_y - ay);
from_origin_b = (corner_x - bx) * (corner_x - bx) +
(corner_y - by) * (corner_y - by);
if (from_origin_a < from_origin_b)
return -1;
else if (from_origin_a > from_origin_b)
return 1;
else
return 0;
}
static gint
northwest_cmp (gconstpointer a,
gconstpointer b,