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src/cursor.c: Implement cursor constraints

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Ph42oN 2022-10-13 00:35:25 +03:00 • committed by Johan Malm
parent 06044799dd
commit c25e2c7a7d
1 changed files with 47 additions and 26 deletions
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73
src/cursor.c
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@ -5,6 +5,7 @@
#include <sys/time.h>
#include <time.h>
#include <wlr/types/wlr_primary_selection.h>
#include <wlr/util/region.h>
#include "action.h"
#include "common/mem.h"
#include "common/scene-helpers.h"
@ -588,6 +589,47 @@ constrain_cursor(struct server *server, struct wlr_pointer_constraint_v1
&seat->constraint_commit);
}
static void
apply_constraint(struct seat *seat, struct wlr_pointer *pointer, double *x, double *y)
{
if (!seat->current_constraint || pointer->base.type != WLR_INPUT_DEVICE_POINTER) {
return;
}
double sx = seat->cursor->x;
double sy = seat->cursor->y;
sx -= seat->server->focused_view->current.x;
sy -= seat->server->focused_view->current.y;
double sx_confined, sy_confined;
if (!wlr_region_confine(&seat->current_constraint->region, sx, sy,
sx + *x, sy + *y, &sx_confined, &sy_confined)) {
return;
}
*x = sx_confined - sx;
*y = sy_confined - sy;
}
static void
preprocess_cursor_motion(struct seat *seat, struct wlr_pointer *pointer,
uint32_t time_msec, double dx, double dy)
{
apply_constraint(seat, pointer, &dx, &dy);
/*
* The cursor doesn't move unless we tell it to. The cursor
* automatically handles constraining the motion to the output
* layout, as well as any special configuration applied for the
* specific input device which generated the event. You can pass
* NULL for the device if you want to move the cursor around
* without any input.
*/
wlr_cursor_move(seat->cursor, &pointer->base, dx, dy);
process_cursor_motion(seat->server, time_msec);
}
static void
cursor_motion(struct wl_listener *listener, void *data)
{
@ -605,19 +647,9 @@ cursor_motion(struct wl_listener *listener, void *data)
seat->seat, (uint64_t)event->time_msec * 1000,
event->delta_x, event->delta_y, event->unaccel_dx,
event->unaccel_dy);
if (!seat->current_constraint) {
/*
* The cursor doesn't move unless we tell it to. The cursor
* automatically handles constraining the motion to the output
* layout, as well as any special configuration applied for the
* specific input device which generated the event. You can pass
* NULL for the device if you want to move the cursor around
* without any input.
*/
wlr_cursor_move(seat->cursor, &event->pointer->base,
event->delta_x, event->delta_y);
}
process_cursor_motion(seat->server, event->time_msec);
preprocess_cursor_motion(seat, event->pointer,
event->time_msec, event->delta_x, event->delta_y);
}
static void
@ -648,19 +680,8 @@ cursor_motion_absolute(struct wl_listener *listener, void *data)
seat->seat, (uint64_t)event->time_msec * 1000,
dx, dy, dx, dy);
if (!seat->current_constraint) {
/*
* The cursor doesn't move unless we tell it to. The cursor
* automatically handles constraining the motion to the output
* layout, as well as any special configuration applied for the
* specific input device which generated the event. You can pass
* NULL for the device if you want to move the cursor around
* without any input.
*/
wlr_cursor_move(seat->cursor, &event->pointer->base, dx, dy);
}
process_cursor_motion(seat->server, event->time_msec);
preprocess_cursor_motion(seat, event->pointer,
event->time_msec, dx, dy);
}
static bool