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wm.c
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/* Copyright (c) 2016, 2017 Tudor Ioan Roman. All rights reserved. */
/* Licensed under the ISC License. See the LICENSE file in the project root for full license information. */
#include <xcb/randr.h>
#include <xcb/xcb.h>
#include <xcb/xcb_ewmh.h>
#include <xcb/xcb_icccm.h>
#include <xcb/xcb_keysyms.h>
#include <X11/keysym.h>
#include <assert.h>
#include <err.h>
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tgmath.h>
#include <unistd.h>
#include <sys/wait.h>
#include "common.h"
#include "config.h"
#include "ipc.h"
#include "list.h"
#include "types.h"
#define EVENT_MASK(ev) (((ev) & ~0x80))
/* XCB event with the biggest value */
#define LAST_XCB_EVENT XCB_GET_MODIFIER_MAPPING
#define NULL_GROUP 0xffffffff
#define PI 3.14159265
/* atoms identifiers */
enum { WM_DELETE_WINDOW, WINDOWCHEF_ACTIVE_GROUPS, _IPC_ATOM_COMMAND, NR_ATOMS };
/* button identifiers */
enum { BUTTON_LEFT, BUTTON_MIDDLE, BUTTON_RIGHT, NR_BUTTONS };
/* connection to the X server */
static xcb_connection_t *conn;
static xcb_ewmh_connection_t *ewmh;
static xcb_screen_t *scr;
static struct client *focused_win;
static struct conf conf;
/* number of the screen we're using */
static int scrno;
/* base for checking randr events */
static int randr_base;
static bool halt;
static int exit_code;
static bool *group_in_use = NULL;
static int last_group = 0;
/* keyboard modifiers (for mouse support) */
static uint16_t num_lock, caps_lock, scroll_lock;
static const xcb_button_index_t mouse_buttons[] = {
XCB_BUTTON_INDEX_1,
XCB_BUTTON_INDEX_2,
XCB_BUTTON_INDEX_3,
};
/* list of all windows. NULL is the empty list */
static struct list_item *win_list = NULL;
static struct list_item *mon_list = NULL;
static struct list_item *focus_list = NULL;
static char *atom_names[NR_ATOMS] = {
"WM_DELETE_WINDOW",
"WINDOWCHEF_ACTIVE_GROUPS",
ATOM_COMMAND,
};
static xcb_atom_t ATOMS[NR_ATOMS];
/* function handlers for ipc commands */
static void (*ipc_handlers[NR_IPC_COMMANDS])(uint32_t *);
/* function handlers for events received from the X server */
static void (*events[LAST_XCB_EVENT + 1])(xcb_generic_event_t *);
static void cleanup(void);
static int setup(void);
static int setup_randr(void);
static void get_randr(void);
static void get_outputs(xcb_randr_output_t *, int len, xcb_timestamp_t);
static struct monitor * find_monitor(xcb_randr_output_t);
static struct monitor * find_monitor_by_coord(int16_t, int16_t);
static struct monitor * find_clones(xcb_randr_output_t, int16_t, int16_t);
static struct monitor * add_monitor(xcb_randr_output_t, char *, int16_t, int16_t, uint16_t, uint16_t);
static void free_monitor(struct monitor *);
static void get_monitor_size(struct client *, int16_t *, int16_t *, uint16_t *, uint16_t *);
static void arrange_by_monitor(struct monitor *);
static struct client * setup_window(xcb_window_t);
static void set_focused_no_raise(struct client *);
static void set_focused(struct client *);
static void set_focused_last_best();
static void raise_window(xcb_window_t);
static void close_window(struct client *);
static void delete_window(xcb_window_t);
static void teleport_window(xcb_window_t, int16_t, int16_t);
static void move_window(xcb_window_t , int16_t, int16_t);
static void resize_window_absolute(xcb_window_t, uint16_t, uint16_t);
static void resize_window(xcb_window_t, int16_t, int16_t);
static void fit_on_screen(struct client *);
static void maximize_window(struct client *, int16_t, int16_t, uint16_t, uint16_t);
static void hmaximize_window(struct client *, int16_t, uint16_t);
static void vmaximize_window(struct client *, int16_t, uint16_t);
static void monocle_window(struct client *, int16_t, int16_t, uint16_t, uint16_t);
static void unmaximize_window(struct client *);
static bool is_maxed(struct client *);
static void cycle_window(struct client *);
static void rcycle_window(struct client *);
static void cycle_window_in_group(struct client *);
static void rcycle_window_in_group(struct client *);
static void cardinal_focus(uint32_t);
static float get_distance_between_windows(struct client *, struct client *);
static float get_angle_between_windows(struct client *, struct client *);
static struct win_position get_window_position(uint32_t, struct client *);
static bool is_overlapping(struct client *, struct client *);
static bool is_in_valid_direction(uint32_t, float, float);
static bool is_in_cardinal_direction(uint32_t , struct client *, struct client *);
static void save_original_size(struct client *);
static xcb_atom_t get_atom(char *);
static bool get_pointer_location(xcb_window_t *, int16_t *, int16_t *);
static void center_pointer(struct client *);
static struct client * find_client(xcb_window_t *);
static bool get_geometry(xcb_window_t *, int16_t *, int16_t *, uint16_t *, uint16_t *);
static void set_borders(struct client *client, uint32_t);
static bool is_mapped(xcb_window_t);
static void free_window(struct client *);
static void add_to_client_list(xcb_window_t);
static void update_client_list(void);
static void update_wm_desktop(struct client *);
static void update_current_desktop(struct client *);
static void group_add_window(struct client *, uint32_t);
static void group_remove_window(struct client *);
static void group_remove_all_windows(uint32_t);
static void group_activate(uint32_t);
static void group_deactivate(uint32_t);
static void group_toggle(uint32_t);
static void group_activate_specific(uint32_t);
static void update_group_list(void);
static void change_nr_of_groups(uint32_t);
static void refresh_borders(void);
static void update_ewmh_wm_state(struct client *);
static void handle_wm_state(struct client *, xcb_atom_t, unsigned int);
static void snap_window(struct client *, enum position);
static void grid_window(struct client *, uint32_t, uint32_t, uint32_t, uint32_t);
static void register_event_handlers(void);
static void event_configure_request(xcb_generic_event_t *);
static void event_destroy_notify(xcb_generic_event_t *);
static void event_enter_notify(xcb_generic_event_t *);
static void event_map_request(xcb_generic_event_t *);
static void event_map_notify(xcb_generic_event_t *);
static void event_unmap_notify(xcb_generic_event_t *);
static void event_configure_notify(xcb_generic_event_t *);
static void event_circulate_request(xcb_generic_event_t *);
static void event_client_message(xcb_generic_event_t *);
static void event_focus_in(xcb_generic_event_t *);
static void event_focus_out(xcb_generic_event_t *);
static void event_button_press(xcb_generic_event_t *);
static void register_ipc_handlers(void);
static void ipc_window_move(uint32_t *);
static void ipc_window_move_absolute(uint32_t *);
static void ipc_window_resize(uint32_t *);
static void ipc_window_resize_absolute(uint32_t *);
static void ipc_window_maximize(uint32_t *);
static void ipc_window_unmaximize(uint32_t *);
static void ipc_window_hor_maximize(uint32_t *);
static void ipc_window_ver_maximize(uint32_t *);
static void ipc_window_monocle(uint32_t *);
static void ipc_window_close(uint32_t *);
static void ipc_window_put_in_grid(uint32_t *);
static void ipc_window_snap(uint32_t *);
static void ipc_window_cycle(uint32_t *);
static void ipc_window_rev_cycle(uint32_t *);
static void ipc_window_cycle_in_group(uint32_t *);
static void ipc_window_rev_cycle_in_group(uint32_t *);
static void ipc_window_cardinal_focus(uint32_t *);
static void ipc_window_focus(uint32_t *);
static void ipc_window_focus_last(uint32_t *);
static void ipc_group_add_window(uint32_t *);
static void ipc_group_remove_window(uint32_t *);
static void ipc_group_remove_all_windows(uint32_t *);
static void ipc_group_activate(uint32_t *);
static void ipc_group_deactivate(uint32_t *);
static void ipc_group_toggle(uint32_t *);
static void ipc_group_activate_specific(uint32_t *);
static void ipc_wm_quit(uint32_t *);
static void ipc_wm_config(uint32_t *);
static void pointer_init(void);
static int16_t pointer_modfield_from_keysym(xcb_keysym_t);
static void window_grab_buttons(xcb_window_t);
static void window_grab_button(xcb_window_t, uint8_t, uint16_t);
static bool pointer_grab(enum pointer_action);
static enum resize_handle get_handle(struct client *, xcb_point_t, enum pointer_action);
static void track_pointer(struct client *, enum pointer_action, xcb_point_t);
static void grab_buttons(void);
static void ungrab_buttons(void);
static void usage(char *);
static void version(void);
static void load_defaults(void);
static void load_config(char *);
/*
* Gracefully disconnect.
*/
static void
cleanup(void)
{
xcb_set_input_focus(conn, XCB_NONE, XCB_INPUT_FOCUS_POINTER_ROOT,
XCB_CURRENT_TIME);
ungrab_buttons();
if (ewmh != NULL)
xcb_ewmh_connection_wipe(ewmh);
if (win_list != NULL)
list_delete_all_items(&win_list, true);
if (focus_list != NULL)
list_delete_all_items(&focus_list, true);
if (conn != NULL)
xcb_disconnect(conn);
}
/*
* Connect to the X server and initialize some things.
*/
static int
setup(void)
{
/* init xcb and grab events */
unsigned int values[1];
int mask;
conn = xcb_connect(NULL, &scrno);
if (xcb_connection_has_error(conn)) {
return -1;
}
/* get the first screen. hope it's the last one too */
scr = xcb_setup_roots_iterator(xcb_get_setup(conn)).data;
focused_win = NULL;
mask = XCB_CW_EVENT_MASK;
values[0] = XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY
| XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
xcb_generic_error_t *e = xcb_request_check(conn,
xcb_change_window_attributes_checked(conn, scr->root,
mask, values));
if (e != NULL) {
free(e);
errx(EXIT_FAILURE, "Another window manager is already running.");
}
/* initialize ewmh variables */
ewmh = calloc(1, sizeof(xcb_ewmh_connection_t));
if (!ewmh)
warnx("couldn't set up ewmh connection");
xcb_intern_atom_cookie_t *cookie = xcb_ewmh_init_atoms(conn, ewmh);
xcb_ewmh_init_atoms_replies(ewmh, cookie, (void *)0);
xcb_ewmh_set_wm_pid(ewmh, scr->root, getpid());
xcb_ewmh_set_wm_name(ewmh, scr->root, strlen(__NAME__), __NAME__);
xcb_ewmh_set_current_desktop(ewmh, 0, 0);
xcb_ewmh_set_number_of_desktops(ewmh, 0, GROUPS);
xcb_atom_t supported_atoms[] = {
ewmh->_NET_SUPPORTED , ewmh->_NET_WM_DESKTOP ,
ewmh->_NET_NUMBER_OF_DESKTOPS , ewmh->_NET_CURRENT_DESKTOP ,
ewmh->_NET_ACTIVE_WINDOW , ewmh->_NET_WM_STATE ,
ewmh->_NET_WM_STATE_FULLSCREEN , ewmh->_NET_WM_STATE_MAXIMIZED_VERT ,
ewmh->_NET_WM_STATE_MAXIMIZED_HORZ , ewmh->_NET_WM_NAME ,
ewmh->_NET_WM_ICON_NAME , ewmh->_NET_WM_WINDOW_TYPE ,
ewmh->_NET_WM_WINDOW_TYPE_DOCK , ewmh->_NET_WM_PID ,
ewmh->_NET_WM_WINDOW_TYPE_TOOLBAR , ewmh->_NET_WM_WINDOW_TYPE_DESKTOP ,
ewmh->_NET_SUPPORTING_WM_CHECK ,
};
xcb_ewmh_set_supported(ewmh, scrno, sizeof(supported_atoms) / sizeof(xcb_atom_t), supported_atoms);
xcb_ewmh_set_supporting_wm_check(ewmh, scr->root, scr->root);
pointer_init();
/* send requests */
xcb_flush(conn);
/* get various atoms for icccm and ewmh */
for (int i = 0; i < NR_ATOMS; i++)
ATOMS[i] = get_atom(atom_names[i]);
randr_base = setup_randr();
group_in_use = malloc(conf.groups * sizeof(bool));
for (uint32_t i = 0; i < conf.groups; i++)
group_in_use[i] = false;
return 0;
}
/*
* Tells the server we want to use randr.
*/
static int
setup_randr(void)
{
int base;
const xcb_query_extension_reply_t *r = xcb_get_extension_data(conn, &xcb_randr_id);
if (!r->present)
return -1;
else
get_randr();
base = r->first_event;
xcb_randr_select_input(conn, scr->root,
XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE
| XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE
| XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE
| XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);
return base;
}
/*
* Get information regarding randr.
*/
static void
get_randr(void)
{
int len;
xcb_randr_get_screen_resources_current_cookie_t c
= xcb_randr_get_screen_resources_current(conn, scr->root);
xcb_randr_get_screen_resources_current_reply_t *r
= xcb_randr_get_screen_resources_current_reply(conn, c, NULL);
if (r == NULL)
return;
xcb_timestamp_t timestamp = r->config_timestamp;
len = xcb_randr_get_screen_resources_current_outputs_length(r);
xcb_randr_output_t *outputs
= xcb_randr_get_screen_resources_current_outputs(r);
/* Request information for all outputs */
get_outputs(outputs, len, timestamp);
free(r);
}
/*
* Gets information about connected outputs.
*/
static void
get_outputs(xcb_randr_output_t *outputs, int len, xcb_timestamp_t timestamp)
{
int name_len;
char *name;
xcb_randr_get_crtc_info_cookie_t info_c;
xcb_randr_get_crtc_info_reply_t *crtc;
xcb_randr_get_output_info_reply_t *output;
struct monitor *mon, *clonemon;
struct list_item *item;
xcb_randr_get_output_info_cookie_t out_cookie[len];
for (int i = 0; i < len; i++)
out_cookie[i] = xcb_randr_get_output_info(conn, outputs[i],
timestamp);
for (int i = 0; i < len; i++) {
output = xcb_randr_get_output_info_reply(conn, out_cookie[i], NULL);
if (output == NULL)
continue;
name_len = xcb_randr_get_output_info_name_length(output);
if (16 < name_len)
name_len = 16;
/* +1 for the null character */
name = malloc(name_len + 1);
/* make sure the name is at most name_len + 1 length
* or we may run into problems. */
snprintf(name, name_len + 1, "%.*s", name_len,
xcb_randr_get_output_info_name(output));
if (output->crtc != XCB_NONE) {
info_c = xcb_randr_get_crtc_info(conn, output->crtc,
timestamp);
crtc = xcb_randr_get_crtc_info_reply(conn, info_c, NULL);
if (crtc == NULL)
return;
clonemon = find_clones(outputs[i], crtc->x, crtc->y);
if (clonemon != NULL)
continue;
mon = find_monitor(outputs[i]);
if (mon == NULL) {
add_monitor(outputs[i], name, crtc->x, crtc->y,
crtc->width, crtc->height);
} else {
mon->x = crtc->x;
mon->y = crtc->y;
mon->width = crtc->width;
mon->height = crtc->height;
arrange_by_monitor(mon);
}
free(crtc);
} else {
/* Check if the monitor was used before
* becoming disabled. */
mon = find_monitor(outputs[i]);
if (mon) {
struct client *client;
for (item = win_list; item != NULL; item = item->next) {
/* Move window from this monitor to
* either the next one or the first one. */
client = item->data;
if (client->monitor == mon) {
if (client->monitor->item->next)
// If at end, take from the beginning
if (mon_list == NULL)
client->monitor = NULL;
else
client->monitor = mon_list->data;
else
client->monitor = client->monitor->item->next->data;
fit_on_screen(client);
}
}
/* Monitor not active. Delete it. */
free_monitor(mon);
}
}
if (output != NULL)
free(output);
free(name);
}
}
/*
* Finds a monitor in the list.
*/
struct monitor *
find_monitor(xcb_randr_output_t mon)
{
struct list_item *item;
struct monitor *m;
item = mon_list;
while (item != NULL && (m = item->data)->monitor != mon)
item = item->next;
if (item == NULL)
return NULL;
else
return item->data;
}
/*
* Find a monitor in the list by its coordinates.
*/
static struct monitor *
find_monitor_by_coord(int16_t x, int16_t y)
{
struct list_item *item;
struct monitor *m, *ret;
m = ret = NULL;
item = mon_list;
while (item != NULL) {
m = item->data;
if (x >= m->x && x <= m->x + m->width
&& y >= m->y && y <= m->y + m->height)
ret = m;
item = item->next;
}
return ret;
}
/*
* Find cloned (mirrored) outputs.
*/
struct monitor *
find_clones(xcb_randr_output_t mon, int16_t x, int16_t y)
{
struct monitor *clonemon;
struct list_item *item;
item = mon_list;
while (item != NULL && ((clonemon = item->data)->monitor == mon
|| clonemon->x != x
|| clonemon->y != y)) {
item = item->next;
}
if (item == NULL)
return NULL;
else
return clonemon;
}
/*
* Add a monitor to the global monitor list.
*/
static struct monitor *
add_monitor(xcb_randr_output_t mon, char *name, int16_t x, int16_t y, uint16_t width, uint16_t height)
{
struct list_item *item;
struct monitor *monitor = malloc(sizeof(struct monitor));
if (monitor == NULL)
return NULL;
item = list_add_item(&mon_list);
if (item == NULL) {
free(monitor);
return NULL;
}
item->data = monitor;
monitor->item = item;
monitor->monitor = mon;
monitor->name = name;
monitor->x = x;
monitor->y = y;
monitor->width = width;
monitor->height = height;
return monitor;
}
/*
* Free a monitor from the global monitor list.
*/
static void
free_monitor(struct monitor *mon)
{
struct list_item *item = mon->item;
free(mon);
list_delete_item(&mon_list, item);
}
/*
* Get information about a certain monitor situated in a window: coordinates and size.
*/
static void
get_monitor_size(struct client *client, int16_t *mon_x, int16_t *mon_y, uint16_t *mon_width, uint16_t *mon_height)
{
if (client == NULL || client->monitor == NULL) {
if (mon_x != NULL && mon_y != NULL)
*mon_x = *mon_y = 0;
if (mon_width != NULL)
*mon_width = scr->width_in_pixels;
if (mon_height != NULL)
*mon_height = scr->height_in_pixels;
} else {
if (mon_x != NULL)
*mon_x = client->monitor->x;
if (mon_y != NULL)
*mon_y = client->monitor->y;
if (mon_width != NULL)
*mon_width = client->monitor->width;
if (mon_height != NULL)
*mon_height = client->monitor->height;
}
}
/*
* Arrange clients on a monitor.
*/
static void
arrange_by_monitor(struct monitor *mon)
{
struct client *client;
struct list_item *item;
for (item = win_list; item != NULL; item = item->next) {
client = item->data;
if (client->monitor == mon)
fit_on_screen(client);
}
}
/*
* Wait for events and handle them.
*/
static void
run(void)
{
xcb_generic_event_t *ev;
update_group_list();
halt = false;
exit_code = EXIT_SUCCESS;
while (!halt) {
xcb_flush(conn);
ev = xcb_wait_for_event(conn);
if (ev) {
DMSG("X Event %d\n", ev->response_type & ~0x80);
if (ev->response_type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
get_randr();
DMSG("Screen layout changed\n");
}
if (events[EVENT_MASK(ev->response_type)] != NULL)
(events[EVENT_MASK(ev->response_type)])(ev);
free(ev);
}
}
}
/*
* Initialize a window for further work.
*/
static struct client *
setup_window(xcb_window_t win)
{
uint32_t values[2];
xcb_ewmh_get_atoms_reply_t win_type;
xcb_atom_t atom;
struct client *client;
struct list_item *item;
struct list_item *focus_item;
xcb_size_hints_t hints;
if (xcb_ewmh_get_wm_window_type_reply(ewmh,
xcb_ewmh_get_wm_window_type(ewmh, win),
&win_type, NULL) == 1) {
unsigned int i = 0;
/* if the window is a toolbar or a dock, map it and ignore it */
while (i < win_type.atoms_len &&
(atom = win_type.atoms[i]) != ewmh->_NET_WM_WINDOW_TYPE_TOOLBAR
&& atom != ewmh->_NET_WM_WINDOW_TYPE_DOCK
&& atom != ewmh->_NET_WM_WINDOW_TYPE_DESKTOP)
i++;
if (i < win_type.atoms_len) {
xcb_ewmh_get_atoms_reply_wipe(&win_type);
xcb_map_window(conn, win);
return NULL;
}
}
/* subscribe to events */
values[0] = XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_FOCUS_CHANGE;
xcb_change_window_attributes(conn, win, XCB_CW_EVENT_MASK, values);
/* in case of fire */
xcb_change_save_set(conn, XCB_SET_MODE_INSERT, win);
/* assign to the null group */
xcb_ewmh_set_wm_desktop(ewmh, win, NULL_GROUP);
item = list_add_item(&win_list);
if (item == NULL)
return NULL;
focus_item = list_add_item(&focus_list);
if (focus_item == NULL)
return NULL;
client = malloc(sizeof(struct client));
if (client == NULL)
return NULL;
/* initialize variables */
focus_item->data = client;
client->focus_item = focus_item;
item->data = client;
client->item = item;
client->window = win;
client->geom.x = client->geom.y = client->geom.width
= client->geom.height
= client->min_width = client->min_height = 0;
client->width_inc = client->height_inc = 1;
client->maxed = client->hmaxed = client->vmaxed
= client->monocled = client->geom.set_by_user = false;
client->monitor = NULL;
client->mapped = false;
client->group = NULL_GROUP;
get_geometry(&client->window, &client->geom.x, &client->geom.y,
&client->geom.width, &client->geom.height);
xcb_icccm_get_wm_normal_hints_reply(conn,
xcb_icccm_get_wm_normal_hints_unchecked(conn, win),
&hints, NULL);
if (hints.flags & XCB_ICCCM_SIZE_HINT_US_POSITION)
client->geom.set_by_user = true;
if (hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
client->min_width = hints.min_width;
client->min_height = hints.min_height;
}
if (hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC) {
client->width_inc = hints.width_inc;
client->height_inc = hints.height_inc;
}
DMSG("new window was born 0x%08x\n", client->window);
return client;
}
/*
* Set focus state to active or inactive without raising the window.
*/
static void
set_focused_no_raise(struct client *client)
{
long data[] = {
XCB_ICCCM_WM_STATE_NORMAL,
XCB_NONE,
};
if (client == NULL)
return;
if (!client->maxed)
set_borders(client, conf.focus_color);
/* focus the window */
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT,
client->window, XCB_CURRENT_TIME);
/* set ewmh property */
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, scr->root,
ewmh->_NET_ACTIVE_WINDOW, XCB_ATOM_WINDOW, 32, 1, &client->window);
/* set window state */
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, client->window,
ewmh->_NET_WM_STATE, ewmh->_NET_WM_STATE, 32, 2, data);
/* set the focus state to inactive on the previously focused window */
if (client != focused_win) {
if (focused_win != NULL && !focused_win->maxed)
set_borders(focused_win, conf.unfocus_color);
}
if (client->focus_item != NULL)
list_move_to_head(&focus_list, client->focus_item);
focused_win = client;
window_grab_buttons(focused_win->window);
}
/*
* Focus and raise.
*/
static void
set_focused(struct client *client)
{
set_focused_no_raise(client);
raise_window(client->window);
}
/*
* Focus last best focus (in a valid group, mapped, etc)
*/
static void
set_focused_last_best()
{
struct list_item *focused_item;
struct client *client;
focused_item = focus_list->next;
while (focused_item != NULL) {
client = focused_item->data;
if (client != NULL && client->mapped) {
set_focused(client);
return;
}
focused_item = focused_item->next;
}
}
/*
* Put window at the top of the window stack.
*/
static void
raise_window(xcb_window_t win)
{
uint32_t values[1] = { XCB_STACK_MODE_ABOVE };
xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
}
/*
* Ask window to close gracefully. If the window doesn't respond, kill it.
*/
static void
close_window(struct client *client)
{
if (client == NULL)
return;
if (conf.last_window_focusing && client != NULL && client == focused_win)
set_focused_last_best();
xcb_window_t win = client->window;
xcb_get_property_cookie_t cookie =
xcb_icccm_get_wm_protocols_unchecked(conn,
win, ewmh->WM_PROTOCOLS);
xcb_icccm_get_wm_protocols_reply_t reply;
unsigned int i = 0;
bool got = false;
if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &reply, NULL)) {
for (i = 0; i < reply.atoms_len; i++) {
got = (reply.atoms[i] = ATOMS[WM_DELETE_WINDOW]);
if (got)
break;
}
xcb_icccm_get_wm_protocols_reply_wipe(&reply);
}
if (got)
delete_window(win);
else
xcb_kill_client(conn, win);
}
/*
* Gracefully ask a window to close.
*/
static void
delete_window(xcb_window_t win)
{
xcb_client_message_event_t ev;
ev.response_type = XCB_CLIENT_MESSAGE;
ev.sequence = 0;
ev.format = 32;
ev.window = win;
ev.type = ewmh->WM_PROTOCOLS;
ev.data.data32[0] = ATOMS[WM_DELETE_WINDOW];
ev.data.data32[1] = XCB_CURRENT_TIME;
xcb_send_event(conn, 0, win, XCB_EVENT_MASK_NO_EVENT, (char *)&ev);
}
/*
* Teleports window absolutely to the given coordinates.
*/
static void
teleport_window(xcb_window_t win, int16_t x, int16_t y)
{
uint32_t values[2] = {x, y};
if (win == scr->root || win == 0)
return;
xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values);
xcb_flush(conn);
}
/*
* Moves the window by a certain amount.
*/
static void
move_window(xcb_window_t win, int16_t x, int16_t y)
{
int16_t win_x, win_y;
uint16_t win_w, win_h;
if (!is_mapped(win) || win == scr->root)
return;
get_geometry(&win, &win_x, &win_y, &win_w, &win_h);
win_x += x;
win_y += y;
teleport_window(win, win_x, win_y);
}
/*
* Resizes window to the given size.
*/
static void
resize_window_absolute(xcb_window_t win, uint16_t w, uint16_t h)
{
uint32_t val[2];
uint32_t mask = XCB_CONFIG_WINDOW_WIDTH
| XCB_CONFIG_WINDOW_HEIGHT;
val[0] = w;
val[1] = h;
xcb_configure_window(conn, win, mask, val);
}
/*
* Resizes window by a certain amount.
*/
static void
resize_window(xcb_window_t win, int16_t w, int16_t h)
{
struct client *client;
int32_t aw, ah;
client = find_client(&win);
if (client == NULL)
return;
aw = client->geom.width;
ah = client->geom.height;
if (aw + w > 0)
aw += w;
if (ah + h > 0)
ah += h;
/* avoid weird stuff */
if (aw < 0)
aw = 0;
if (ah < 0)
ah = 0;
if (client->min_width != 0 && aw < client->min_width)
aw = client->min_width;
if (client->min_height != 0 && ah < client->min_height)
ah = client->min_height;
client->geom.width = aw - conf.resize_hints * (aw % client->width_inc);
client->geom.height = ah - conf.resize_hints * (ah % client->height_inc);
resize_window_absolute(win, client->geom.width, client->geom.height);
}
/*
* Fit window on screen if too big.
*/
static void
fit_on_screen(struct client *client)
{
int16_t mon_x, mon_y;
uint16_t mon_width, mon_height;
bool will_resize, will_move;
will_resize = will_move = false;
client->hmaxed = client->vmaxed = false;
get_monitor_size(client, &mon_x, &mon_y, &mon_width, &mon_height);
if (client->maxed) {
client->maxed = false;
} else if (client->geom.width == mon_width && client->geom.height == mon_height) {
client->geom.x = mon_x;
client->geom.y = mon_y;
client->geom.width -= 2 * conf.border_width;
client->geom.height -= 2 * conf.border_width;
maximize_window(client, mon_x, mon_y, mon_width, mon_height);
return;
}
/* Is it outside the display? */
if (client->geom.x > mon_x + mon_width || client->geom.y > mon_y + mon_height
|| client->geom.x < mon_x || client->geom.y < mon_y) {
will_move = true;
if (client->geom.x > mon_x + mon_width)