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-/* See LICENSE file for copyright and 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 layout is
- * represented by the lt pointer.
- *
- * 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)
-
-enum { BarTop, BarBot, BarOff }; /* bar position */
-enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
-enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
-enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
-enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
-
-typedef struct Client Client;
-struct Client {
- char name[256];
- int x, y, w, h;
- int rx, ry, rw, rh; /* revert geometry */
- int basew, baseh, incw, inch, maxw, maxh, minw, minh;
- int minax, maxax, minay, maxay;
- long flags;
- unsigned int border, oldborder;
- Bool isbanned, isfixed, ismax, isfloating;
- Bool *tags;
- Client *next;
- Client *prev;
- Client *snext;
- Window win;
-};
-
-typedef struct {
- int x, y, w, h;
- unsigned long norm[ColLast];
- unsigned long sel[ColLast];
- Drawable drawable;
- GC gc;
- struct {
- int ascent;
- int descent;
- int height;
- XFontSet set;
- XFontStruct *xfont;
- } font;
-} DC; /* draw context */
-
-extern const char *tags[]; /* all tags */
-extern char stext[256]; /* status text */
-extern int screen, sx, sy, sw, sh; /* screen geometry */
-extern int wax, way, wah, waw; /* windowarea geometry */
-extern unsigned int bh, blw, bpos; /* bar height, bar layout label width, bar position */
-extern unsigned int ntags, numlockmask; /* number of tags, numlock mask */
-extern void (*handler[LASTEvent])(XEvent *); /* event handler */
-extern Atom wmatom[WMLast], netatom[NetLast];
-extern Bool selscreen, *seltags; /* seltags 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;
-
-/* bar.c */
-void drawbar(void); /* draw the bar */
-void initbar(void); /* initializes the bar */
-void initstyle(void); /* initializes colors and font */
-unsigned int textw(const char *text); /* return the width of text in px*/
-void togglebar(const char *arg); /* shows/hides the bar */
-void updatebarpos(void); /* updates the bar position */
-
-/* client.c */
-void attach(Client *c); /* attaches c to global client list */
-void ban(Client *c); /* bans c */
-void configure(Client *c); /* send synthetic configure event */
-void detach(Client *c); /* detaches c from global client list */
-void focus(Client *c); /* focus c if visible && !NULL, or focus top visible */
-void killclient(const char *arg); /* kill sel nicely */
-void manage(Window w, XWindowAttributes *wa); /* manage new client */
-void resize(Client *c, int x, int y,
- int w, int h, Bool sizehints); /* resize with given coordinates c*/
-void unban(Client *c); /* unbans c */
-void unmanage(Client *c); /* unmanage c */
-void updatesizehints(Client *c); /* update the size hint variables of c */
-void updatetitle(Client *c); /* update the name of c */
-
-/* event.c */
-void grabkeys(void); /* grab all keys defined in config.h */
-
-/* main.c */
-Bool gettextprop(Window w, Atom atom,
- char *text, unsigned int size); /* return text property, UTF-8 compliant */
-void quit(const char *arg); /* quit dwm nicely */
-int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
-
-/* screen.c */
-void applyrules(Client *c); /* applies rules to c */
-void arrange(void); /* arranges all windows depending on the layout in use */
-void compileregs(void); /* initialize regexps of rules defined in config.h */
-void focusnext(const char *arg); /* focuses next visible client */
-void focusprev(const char *arg); /* focuses prev visible client */
-const char *getsymbol(void); /* returns symbol of enabled layout */
-void initlayouts(void); /* initialize layout array */
-Bool isarrange(void (*func)()); /* returns True if func is the layout function in use */
-Bool isfloating(void); /* returns True if floating layout is enabled */
-Bool isvisible(Client *c); /* returns True if client is visible */
-Client *nexttiled(Client *c); /* returns tiled successor of c */
-void restack(void); /* restores z layers of all clients */
-void setlayout(const char *arg); /* sets layout, NULL means next layout */
-void tag(const char *arg); /* tags sel with arg's index */
-void togglefloating(const char *arg); /* toggles sel between floating/tiled state */
-void togglemax(const char *arg); /* toggles maximization of floating client */
-void toggletag(const char *arg); /* toggles sel tags with arg's index */
-void toggleview(const char *arg); /* toggles the tag with arg's index (in)visible */
-void view(const char *arg); /* views the tag with arg's index */
-
-/* util.c */
-void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
-void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
-void spawn(const char *arg); /* forks a new subprocess with arg's cmd */