suckless/dwm - Unnamed repository; edit this file 'description' to name the repository.

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Diffstat (limited to 'dwm.c')

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/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com> * See LICENSE file for license details. * * dynamic window manager is designed like any other X client as well. It is * driven through handling X events. In contrast to other X clients, a window * manager selects for SubstructureRedirectMask on the root window, to receive * events about window (dis-)appearance. Only one X connection at a time is * allowed to select for this event mask. * * Calls to fetch an X event from the event queue are blocking. Due reading * status text from standard input, a select()-driven main loop has been * implemented which selects for reads on the X connection and STDIN_FILENO to * handle all data smoothly. The event handlers of dwm are organized in an * array which is accessed whenever a new event has been fetched. This allows * event dispatching in O(1) time. * * Each child of the root window is called a client, except windows which have * set the override_redirect flag. Clients are organized in a global * doubly-linked client list, the focus history is remembered through a global * stack list. Each client contains an array of Bools of the same size as the * global tags array to indicate the tags of a client. For each client dwm * creates a small title window, which is resized whenever the (_NET_)WM_NAME * properties are updated or the client is moved/resized. * * Keys and tagging rules are organized as arrays and defined in the config.h * file. These arrays are kept static in event.o and tag.o respectively, * because no other part of dwm needs access to them. The current mode is * represented by the arrange() function pointer, which wether points to * dofloat() or dotile(). * * To understand everything else, start reading main.c:main(). */ #include "config.h" #include <X11/Xlib.h> /* mask shorthands, used in event.c and client.c */ #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask) /* other stuff used in different places */ #define BORDERPX 1 #define PROTODELWIN 1 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */ enum { WMProtocols, WMDelete, WMLast }; /* default atoms */ enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */ enum { ColBorder, ColFG, ColBG, ColLast }; /* color */ typedef enum { TopLeft, TopRight, BotLeft, BotRight } Corner; /* window corners */ typedef union { const char *cmd; int i; } Arg; /* argument type */ typedef struct { int ascent; int descent; int height; XFontSet set; XFontStruct *xfont; } Fnt; typedef struct { int x, y, w, h; unsigned long norm[ColLast]; unsigned long sel[ColLast]; Drawable drawable; Fnt font; GC gc; } DC; /* draw context */ typedef struct Client Client; struct Client { char name[256]; int proto; int x, y, w, h; int rx, ry, rw, rh; /* revert geometry */ int basew, baseh, incw, inch, maxw, maxh, minw, minh; long flags; unsigned int border; Bool isfloat, isfixed, ismax; Bool *tags; Client *next; Client *prev; Client *snext; Window win; }; extern const char *tags[]; /* all tags */ extern char stext[256]; /* status text */ extern int bx, by, bw, bh, bmw; /* bar geometry, bar mode label width */ extern int screen, sx, sy, sw, sh; /* screen geometry */ extern int wax, way, wah, waw; /* windowarea geometry */ extern unsigned int master, nmaster; /* master percent, number of master clients */ extern unsigned int ntags, numlockmask; /* number of tags, dynamic lock mask */ extern void (*handler[LASTEvent])(XEvent *); /* event handler */ extern void (*arrange)(void); /* arrange function, indicates mode */ extern Atom wmatom[WMLast], netatom[NetLast]; extern Bool running, issel, *seltag; /* seltag is array of Bool */ extern Client *clients, *sel, *stack; /* global client list and stack */ extern Cursor cursor[CurLast]; extern DC dc; /* global draw context */ extern Display *dpy; extern Window root, barwin; /* client.c */ extern void configure(Client *c); /* send synthetic configure event */ extern void focus(Client *c); /* focus c, c may be NULL */ extern Client *getclient(Window w); /* return client of w */ extern void killclient(Arg *arg); /* kill c nicely */ extern void manage(Window w, XWindowAttributes *wa); /* manage new client */ extern void resize(Client *c, Bool sizehints, Corner sticky); /* resize c*/ extern void updatesizehints(Client *c); /* update the size hint variables of c */ extern void updatetitle(Client *c); /* update the name of c */ extern void unmanage(Client *c); /* destroy c */ /* draw.c */ extern void drawstatus(void); /* draw the bar */ extern unsigned long getcolor(const char *colstr); /* return color of colstr */ extern void setfont(const char *fontstr); /* set the font for DC */ extern unsigned int textw(const char *text); /* return the width of text in px*/ /* event.c */ extern void grabkeys(void); /* grab all keys defined in config.h */ extern void procevent(void); /* process pending X events */ /* main.c */ extern int getproto(Window w); /* return protocol mask of WMProtocols property of w */ extern void quit(Arg *arg); /* quit dwm nicely */ extern void sendevent(Window w, Atom a, long value); /* send synthetic event to w */ extern int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */ /* tag.c */ extern void initrregs(void); /* initialize regexps of rules defined in config.h */ extern Client *getnext(Client *c); /* returns next visible client */ extern Client *getprev(Client *c); /* returns previous visible client */ extern void settags(Client *c, Client *trans); /* sets tags of c */ extern void tag(Arg *arg); /* tags c with arg's index */ extern void toggletag(Arg *arg); /* toggles c tags with arg's index */ /* util.c */ extern void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */ extern void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */ extern void *erealloc(void *ptr, unsigned int size); /* reallocates memory, exits on error */ extern void spawn(Arg *arg); /* forks a new subprocess with to arg's cmd */ /* view.c */ extern void detach(Client *c); /* detaches c from global client list */ extern void dofloat(void); /* arranges all windows floating */ extern void dotile(void); /* arranges all windows tiled */ extern void focusnext(Arg *arg); /* focuses next visible client, arg is ignored */ extern void focusprev(Arg *arg); /* focuses previous visible client, arg is ignored */ extern void incnmaster(Arg *arg); /* increments nmaster with arg's index value */ extern Bool isvisible(Client *c); /* returns True if client is visible */ extern void resizemaster(Arg *arg); /* resizes the master percent with arg's index value */ extern void restack(void); /* restores z layers of all clients */ extern void togglefloat(Arg *arg); /* toggles focusesd client between floating/non-floating state */ extern void togglemode(Arg *arg); /* toggles global arrange function (dotile/dofloat) */ extern void toggleview(Arg *arg); /* toggles the tag with arg's index (in)visible */ extern void view(Arg *arg); /* views the tag with arg's index */ extern void zoom(Arg *arg); /* zooms the focused client to master area, arg is ignored */


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