swayfx/sway/input/seatop_resize_tiling.c

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#define _POSIX_C_SOURCE 200809L
#include <wlr/types/wlr_cursor.h>
#include "sway/commands.h"
#include "sway/input/cursor.h"
#include "sway/input/seat.h"
struct seatop_resize_tiling_event {
struct sway_container *con;
enum wlr_edges edge;
double ref_lx, ref_ly; // cursor's x/y at start of op
double ref_width, ref_height; // container's size at start of op
double ref_con_lx, ref_con_ly; // container's x/y at start of op
};
static void handle_motion(struct sway_seat *seat, uint32_t time_msec) {
struct seatop_resize_tiling_event *e = seat->seatop_data;
int amount_x = 0;
int amount_y = 0;
int moved_x = seat->cursor->cursor->x - e->ref_lx;
int moved_y = seat->cursor->cursor->y - e->ref_ly;
enum wlr_edges edge_x = WLR_EDGE_NONE;
enum wlr_edges edge_y = WLR_EDGE_NONE;
struct sway_container *con = e->con;
if (e->edge & WLR_EDGE_TOP) {
amount_y = (e->ref_height - moved_y) - con->height;
edge_y = WLR_EDGE_TOP;
} else if (e->edge & WLR_EDGE_BOTTOM) {
amount_y = (e->ref_height + moved_y) - con->height;
edge_y = WLR_EDGE_BOTTOM;
}
if (e->edge & WLR_EDGE_LEFT) {
amount_x = (e->ref_width - moved_x) - con->width;
edge_x = WLR_EDGE_LEFT;
} else if (e->edge & WLR_EDGE_RIGHT) {
amount_x = (e->ref_width + moved_x) - con->width;
edge_x = WLR_EDGE_RIGHT;
}
if (amount_x != 0) {
container_resize_tiled(e->con, edge_x, amount_x);
}
if (amount_y != 0) {
container_resize_tiled(e->con, edge_y, amount_y);
}
}
static void handle_finish(struct sway_seat *seat) {
cursor_set_image(seat->cursor, "left_ptr", NULL);
}
static void handle_abort(struct sway_seat *seat) {
cursor_set_image(seat->cursor, "left_ptr", NULL);
}
static void handle_unref(struct sway_seat *seat, struct sway_container *con) {
struct seatop_resize_tiling_event *e = seat->seatop_data;
if (e->con == con) {
seatop_abort(seat);
}
}
static const struct sway_seatop_impl seatop_impl = {
.motion = handle_motion,
.finish = handle_finish,
.abort = handle_abort,
.unref = handle_unref,
};
void seatop_begin_resize_tiling(struct sway_seat *seat,
struct sway_container *con, uint32_t button, enum wlr_edges edge) {
seatop_abort(seat);
struct seatop_resize_tiling_event *e =
calloc(1, sizeof(struct seatop_resize_tiling_event));
if (!e) {
return;
}
e->con = con;
e->edge = edge;
e->ref_lx = seat->cursor->cursor->x;
e->ref_ly = seat->cursor->cursor->y;
e->ref_con_lx = con->x;
e->ref_con_ly = con->y;
e->ref_width = con->width;
e->ref_height = con->height;
seat->seatop_impl = &seatop_impl;
seat->seatop_data = e;
seat->seatop_button = button;
}