aewl
view dwm.h @ 714:7034ee0f48d6
small changes
| author | Anselm R. Garbe <arg@suckless.org> |
|---|---|
| date | Tue, 23 Jan 2007 12:29:17 +0100 |
| parents | a2d568a5cdb8 |
| children | 4ce65f61f01b |
line source
1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 *
4 * dynamic window manager is designed like any other X client as well. It is
5 * driven through handling X events. In contrast to other X clients, a window
6 * manager selects for SubstructureRedirectMask on the root window, to receive
7 * events about window (dis-)appearance. Only one X connection at a time is
8 * allowed to select for this event mask.
9 *
10 * Calls to fetch an X event from the event queue are blocking. Due reading
11 * status text from standard input, a select()-driven main loop has been
12 * implemented which selects for reads on the X connection and STDIN_FILENO to
13 * handle all data smoothly. The event handlers of dwm are organized in an
14 * array which is accessed whenever a new event has been fetched. This allows
15 * event dispatching in O(1) time.
16 *
17 * Each child of the root window is called a client, except windows which have
18 * set the override_redirect flag. Clients are organized in a global
19 * doubly-linked client list, the focus history is remembered through a global
20 * stack list. Each client contains an array of Bools of the same size as the
21 * global tags array to indicate the tags of a client. For each client dwm
22 * creates a small title window, which is resized whenever the (_NET_)WM_NAME
23 * properties are updated or the client is moved/resized.
24 *
25 * Keys and tagging rules are organized as arrays and defined in the config.h
26 * file. These arrays are kept static in event.o and tag.o respectively,
27 * because no other part of dwm needs access to them. The current mode is
28 * represented by the arrange() function pointer, which wether points to
29 * dofloat() or dotile().
30 *
31 * To understand everything else, start reading main.c:main().
32 */
34 #include "config.h"
35 #include <X11/Xlib.h>
37 /* mask shorthands, used in event.c and client.c */
38 #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
39 /* other stuff used in different places */
40 #define PROTODELWIN 1
42 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
43 enum { WMProtocols, WMDelete, WMLast }; /* default atoms */
44 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
45 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
47 typedef union {
48 const char *cmd;
49 int i;
50 } Arg; /* argument type */
52 typedef struct {
53 int ascent;
54 int descent;
55 int height;
56 XFontSet set;
57 XFontStruct *xfont;
58 } Fnt;
60 typedef struct {
61 int x, y, w, h;
62 unsigned long norm[ColLast];
63 unsigned long sel[ColLast];
64 Drawable drawable;
65 Fnt font;
66 GC gc;
67 } DC; /* draw context */
69 typedef struct Client Client;
70 struct Client {
71 char name[256];
72 int proto;
73 int x, y, w, h;
74 int rx, ry, rw, rh; /* revert geometry */
75 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
76 long flags;
77 unsigned int border;
78 Bool isfloat, isfixed, ismax;
79 Bool *tags;
80 Client *next;
81 Client *prev;
82 Client *snext;
83 Window win;
84 };
86 extern const char *tags[]; /* all tags */
87 extern char stext[256]; /* status text */
88 extern int bh, bmw; /* bar height, bar mode label width */
89 extern int screen, sx, sy, sw, sh; /* screen geometry */
90 extern int wax, way, wah, waw; /* windowarea geometry */
91 extern unsigned int master, nmaster; /* master percent, number of master clients */
92 extern unsigned int ntags, numlockmask; /* number of tags, dynamic lock mask */
93 extern void (*handler[LASTEvent])(XEvent *); /* event handler */
94 extern void (*arrange)(void); /* arrange function, indicates mode */
95 extern Atom wmatom[WMLast], netatom[NetLast];
96 extern Bool activescreen, running, *seltag; /* seltag is array of Bool */
97 extern Client *clients, *sel, *stack; /* global client list and stack */
98 extern Cursor cursor[CurLast];
99 extern DC dc; /* global draw context */
100 extern Display *dpy;
101 extern Window root, barwin;
103 /* client.c */
104 extern void configure(Client *c); /* send synthetic configure event */
105 extern void focus(Client *c); /* focus c, c may be NULL */
106 extern Client *getclient(Window w); /* return client of w */
107 extern void killclient(Arg *arg); /* kill c nicely */
108 extern void manage(Window w, XWindowAttributes *wa); /* manage new client */
109 extern void resize(Client *c, Bool sizehints); /* resize c*/
110 extern void updatesizehints(Client *c); /* update the size hint variables of c */
111 extern void updatetitle(Client *c); /* update the name of c */
112 extern void unmanage(Client *c); /* destroy c */
114 /* draw.c */
115 extern void drawstatus(void); /* draw the bar */
116 extern unsigned long getcolor(const char *colstr); /* return color of colstr */
117 extern void setfont(const char *fontstr); /* set the font for DC */
118 extern unsigned int textw(const char *text); /* return the width of text in px*/
120 /* event.c */
121 extern void grabkeys(void); /* grab all keys defined in config.h */
122 extern void procevent(void); /* process pending X events */
124 /* main.c */
125 extern int getproto(Window w); /* return protocol mask of WMProtocols property of w */
126 extern void quit(Arg *arg); /* quit dwm nicely */
127 extern void sendevent(Window w, Atom a, long value); /* send synthetic event to w */
128 extern int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
130 /* tag.c */
131 extern void initrregs(void); /* initialize regexps of rules defined in config.h */
132 extern Client *getnext(Client *c); /* returns next visible client */
133 extern Client *getprev(Client *c); /* returns previous visible client */
134 extern void settags(Client *c, Client *trans); /* sets tags of c */
135 extern void tag(Arg *arg); /* tags c with arg's index */
136 extern void toggletag(Arg *arg); /* toggles c tags with arg's index */
138 /* util.c */
139 extern void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
140 extern void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
141 extern void spawn(Arg *arg); /* forks a new subprocess with to arg's cmd */
143 /* view.c */
144 extern void detach(Client *c); /* detaches c from global client list */
145 extern void dofloat(void); /* arranges all windows floating */
146 extern void dotile(void); /* arranges all windows tiled */
147 extern void focusnext(Arg *arg); /* focuses next visible client, arg is ignored */
148 extern void focusprev(Arg *arg); /* focuses previous visible client, arg is ignored */
149 extern void incnmaster(Arg *arg); /* increments nmaster with arg's index value */
150 extern Bool isvisible(Client *c); /* returns True if client is visible */
151 extern void resizemaster(Arg *arg); /* resizes the master percent with arg's index value */
152 extern void restack(void); /* restores z layers of all clients */
153 extern void togglefloat(Arg *arg); /* toggles focusesd client between floating/non-floating state */
154 extern void togglemode(Arg *arg); /* toggles global arrange function (dotile/dofloat) */
155 extern void toggleview(Arg *arg); /* toggles the tag with arg's index (in)visible */
156 extern void view(Arg *arg); /* views the tag with arg's index */
157 extern void zoom(Arg *arg); /* zooms the focused client to master area, arg is ignored */