aewl
view dwm.h @ 532:651f2c868b31
code polishing, removed unnecessary newlines
| author | Anselm R. Garbe <arg@10kloc.org> |
|---|---|
| date | Fri, 06 Oct 2006 11:50:15 +0200 |
| parents | 451f19d48845 |
| children | a5567a0d3011 |
line source
1 /* (C)opyright MMVI 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 #define MOUSEMASK (BUTTONMASK | PointerMotionMask)
40 /* other stuff used in different places */
41 #define BORDERPX 1
42 #define PROTODELWIN 1
44 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
45 enum { WMProtocols, WMDelete, WMLast }; /* default atoms */
46 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
47 enum { ColFG, ColBG, ColLast }; /* color */
49 typedef enum {
50 TopLeft, TopRight, BotLeft, BotRight
51 } Corner; /* window corners */
53 typedef union {
54 const char *cmd;
55 int i;
56 } Arg; /* argument type */
58 typedef struct {
59 int ascent;
60 int descent;
61 int height;
62 XFontSet set;
63 XFontStruct *xfont;
64 } Fnt;
66 typedef struct {
67 int x, y, w, h;
68 unsigned long norm[ColLast];
69 unsigned long sel[ColLast];
70 unsigned long status[ColLast];
71 Drawable drawable;
72 Fnt font;
73 GC gc;
74 } DC; /* draw context */
76 typedef struct Client Client;
77 struct Client {
78 char name[256];
79 int proto;
80 int x, y, w, h;
81 int rx, ry, rw, rh; /* revert geometry */
82 int tx, ty, tw, th; /* title window geometry */
83 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
84 int grav;
85 long flags;
86 unsigned int border, weight;
87 Bool isfloat, ismax;
88 Bool *tags;
89 Client *next;
90 Client *prev;
91 Client *snext;
92 Window win;
93 Window twin;
94 };
96 extern const char *tags[]; /* all tags */
97 extern char stext[1024]; /* status text */
98 extern int bx, by, bw, bh, bmw; /* bar geometry, bar mode label width */
99 extern int screen, sx, sy, sw, sh; /* screen geometry */
100 extern unsigned int master, ntags, numlockmask; /* master percent, number of tags, dynamic lock mask */
101 extern void (*handler[LASTEvent])(XEvent *); /* event handler */
102 extern void (*arrange)(Arg *); /* arrange function, indicates mode */
103 extern Atom wmatom[WMLast], netatom[NetLast];
104 extern Bool running, issel, *seltag; /* seltag is array of Bool */
105 extern Client *clients, *sel, *stack; /* global client list and stack */
106 extern Cursor cursor[CurLast];
107 extern DC dc; /* global draw context */
108 extern Display *dpy;
109 extern Window root, barwin;
111 /* client.c */
112 extern void ban(Client *c); /* ban c from screen */
113 extern void configure(Client *c); /* send synthetic configure event */
114 extern void focus(Client *c); /* focus c, c may be NULL */
115 extern Client *getclient(Window w); /* return client of w */
116 extern Client *getctitle(Window w); /* return client of title window */
117 extern void gravitate(Client *c, Bool invert); /* gravitate c */
118 extern void killclient(Arg *arg); /* kill c nicely */
119 extern void manage(Window w, XWindowAttributes *wa); /* manage new client */
120 extern void resize(Client *c, Bool sizehints, Corner sticky); /* resize c*/
121 extern void resizetitle(Client *c); /* resizes c->twin correctly */
122 extern void updatesize(Client *c); /* update the size structs of c */
123 extern void updatetitle(Client *c); /* update the name of c */
124 extern void unmanage(Client *c); /* destroy c */
126 /* draw.c */
127 extern void drawall(void); /* draw all visible client titles and the bar */
128 extern void drawstatus(void); /* draw the bar */
129 extern void drawtitle(Client *c); /* draw title of c */
130 extern unsigned long getcolor(const char *colstr); /* return color of colstr */
131 extern void setfont(const char *fontstr); /* set the font for DC */
132 extern unsigned int textw(const char *text); /* return the width of text in px*/
134 /* event.c */
135 extern void grabkeys(void); /* grab all keys defined in config.h */
136 extern void procevent(void); /* process pending X events */
138 /* main.c */
139 extern int getproto(Window w); /* return protocol mask of WMProtocols property of w */
140 extern void quit(Arg *arg); /* quit dwm nicely */
141 extern void sendevent(Window w, Atom a, long value); /* send synthetic event to w */
142 extern int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
144 /* tag.c */
145 extern void initrregs(void); /* initialize regexps of rules defined in config.h */
146 extern Client *getnext(Client *c); /* returns next visible client */
147 extern Client *getprev(Client *c); /* returns previous visible client */
148 extern void settags(Client *c, Client *trans); /* sets tags of c */
149 extern void tag(Arg *arg); /* tags c with arg's index */
150 extern void toggletag(Arg *arg); /* toggles c tags with arg's index */
152 /* util.c */
153 extern void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
154 extern void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
155 extern void *erealloc(void *ptr, unsigned int size); /* reallocates memory, exits on error */
156 extern void spawn(Arg *arg); /* forks a new subprocess with to arg's cmd */
158 /* view.c */
159 extern void detach(Client *c); /* detaches c from global client list */
160 extern void dofloat(Arg *arg); /* arranges all windows floating, arg is ignored */
161 extern void dotile(Arg *arg); /* arranges all windows, arg is ignored */
162 extern void focusnext(Arg *arg); /* focuses next visible client, arg is ignored */
163 extern void focusprev(Arg *arg); /* focuses previous visible client, arg is ignored */
164 extern Bool isvisible(Client *c); /* returns True if client is visible */
165 extern void resizecol(Arg *arg); /* resizes the master percent with arg's index value */
166 extern void restack(void); /* restores z layers of all clients */
167 extern void togglemode(Arg *arg); /* toggles global arrange function (dotile/dofloat) */
168 extern void toggleview(Arg *arg); /* toggles the tag with arg's index (in)visible */
169 extern void view(Arg *arg); /* views the tag with arg's index */
170 extern void viewall(Arg *arg); /* views all tags, arg is ignored */
171 extern void zoom(Arg *arg); /* zooms the focused client to master area, arg is ignored */