swim.git

/* swim - window manager
 * Copyright (C) 2022-2023 ArcNyxx
 * see LICENCE file for licensing information */

#include <stdint.h>

#include <X11/Xlib.h>

#include "conv.h"
#include "swim.h"
#include "util.h"

extern mon_t *sel, *mons;

mon_t *
rectomon(uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{
	uint16_t area, last = 0;
	mon_t *mon, *save = sel;
	for (mon = mons; mon != NULL; mon = mon->next)
		if ((area = MAX(0, MIN(x + w, mon->x + mon->w) -
				MAX(x, mon->x)) *
				MAX(0, MIN(y + h, mon->y + mon->h) -
				MAX(y, mon->y))) > last)
			last = area, save = mon;
	return save;
}

cli_t *
wintocli(Window win)
{
	for (mon_t *mon = mons; mon != NULL; mon = mon->next)
		for (cli_t *cli = mon->cli; cli != NULL; cli = cli->next)
			if (cli->win == win)
				return cli;
	return NULL;
}

mon_t *
wintomon(Window win)
{
	int x, y;
	if (win == ROOT && XQueryPointer(dpy, ROOT, &(Window){ 0 },
			&(Window){ 0 }, &x, &y, &(int){ 0 }, &(int){ 0 },
			&(unsigned int){ 0 }))
		return rectomon(x, y, 1, 1);
	for (mon_t *mon = mons; mon != NULL; mon = mon->next)
		if (win == mon->win)
			return mon;
	cli_t *cli = wintocli(win);
	return cli != NULL ? cli->mon : sel;
}