2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> |
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> |
3 * See LICENSE file for license details. |
3 * See LICENSE file for license details. |
4 * |
4 * |
5 * dynamic window manager is designed like any other X client as well. It is |
5 * dynamic window manager is designed like any other X client as well. It is |
6 * driven through handling X events. In contrast to other X clients, a window |
6 * driven through handling X events. In contrast to other X clients, a window |
7 * manager like dwm selects for SubstructureRedirectMask on the root window, to |
7 * manager selects for SubstructureRedirectMask on the root window, to receive |
8 * receive events about window appearance and disappearance. Only one X |
8 * events about window (dis-)appearance. Only one X connection at a time is |
9 * connection at a time is allowed to select for this event mask. |
9 * allowed to select for this event mask. |
10 * |
10 * |
11 * Calls to fetch an X event from the X event queue connection are blocking. |
11 * Calls to fetch an X event from the event queue are blocking. Due reading |
12 * Due reading status text from standard input, a select-driven main loop has |
12 * status text from standard input, a select-driven main loop has been |
13 * been implemented which selects for reads on the X connection and |
13 * implemented which selects for reads on the X connection and STDIN_FILENO to |
14 * STDIN_FILENO to handle all data smoothly and without busy-loop quirks. The |
14 * handle all data smoothly. The event handlers of dwm are organized in an |
15 * event handlers of dwm are organized in an array which is accessed whenever a |
15 * array which is accessed whenever a new event has been fetched. This allows |
16 * new event has been fetched. This allows event dispatching in O(1) time. |
16 * event dispatching in O(1) time. |
17 * |
17 * |
18 * Each child of the root window is called a client, except windows which have |
18 * Each child of the root window is called a client, except windows which have |
19 * set the override_redirect flag. Clients are organized in a global |
19 * set the override_redirect flag. Clients are organized in a global |
20 * doubly-linked client list, the focus history is remembered through a global |
20 * doubly-linked client list, the focus history is remembered through a global |
21 * stack list. Each client contains an array of Bools of the same size as the |
21 * stack list. Each client contains an array of Bools of the same size as the |
22 * global tags array to indicate the tags of a client. For each client dwm |
22 * global tags array to indicate the tags of a client. For each client dwm |
23 * creates a small title window which is resized whenever the WM_NAME or |
23 * creates a small title window, which is resized whenever the (_NET_)WM_NAME |
24 * _NET_WM_NAME properties are updated or the client is resized. |
24 * properties are updated or the client is moved/resized. |
25 * |
25 * |
26 * Keys and tagging rules are organized as arrays and defined in the config.h |
26 * Keys and tagging rules are organized as arrays and defined in the config.h |
27 * file. These arrays are kept static in event.o and tag.o respectively, |
27 * file. These arrays are kept static in event.o and tag.o respectively, |
28 * because no other part of dwm needs access to them. The current mode is |
28 * because no other part of dwm needs access to them. The current mode is |
29 * represented by the arrange function pointer which wether points to dofloat |
29 * represented by the arrange function pointer, which wether points to dofloat |
30 * or dotile. |
30 * or dotile. |
31 * |
31 * |
32 * To understand everything else, start with reading main.c:main(). |
32 * To understand everything else, start reading main.c:main(). |
33 */ |
33 */ |
34 |
34 |
35 #include "config.h" |
35 #include "config.h" |
36 #include <X11/Xlib.h> |
36 #include <X11/Xlib.h> |
37 |
37 |