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comparison dwm.h @ 468:210a99f18657

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some simplifications to intro in dwm.h
author arg@mmvi
date Tue, 19 Sep 2006 16:13:44 +0200
parents ab4b08d49d24
children a2cc7adf9d4d
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467:8852d6a2270e 468:210a99f18657
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