*
* 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 like dwm selects for SubstructureRedirectMask on the root window, to
- * receive events about child window appearance and disappearance. Only one X
- * connection at a time is allowed to select for this event mask by any X
- * server, thus only one window manager instance can be executed at a time.
- * Any attempt to select for SubstructureRedirectMask by any connection after
- * another connection already selected for those events, will result in an
- * error generated by the server. Such errors are reported through calling the
- * current X error handler.
+ * 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 pop an X event from the event queue of the X connection are
- * blocking. Due the fact, that dwm reads 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 and without
- * busy-loop quirks.. The event handlers of dwm are organized in an array
- * which is accessed whenever a new event has been popped. This allows event
- * dispatching in O(1) time.
+ * 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 window of the root window is called a client in window manager
- * terminology, 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. There are no other data structures to organize the clients
- * in tag lists, because a single global list is most simple. All clients which
- * have at least one tag enabled of the current tags viewed, will be visible on
- * the screen, all other clients are banned to the x-location 2 * screen width.
- * This avoids having additional layers of workspace handling.
+ * 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.
*
- * For each client dwm creates a small title window which is resized whenever
- * the WM_NAME or _NET_WM_NAME properties are updated.
+ * 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().
*
- * Keys and tagging rules are organized as arrays as well 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"
/* mask shorthands, used in event.c and client.c */
#define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
+/* other stuff used in different places */
+#define BORDERPX 1
+#define MINW 100
#define PROTODELWIN 1
enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { ColFG, ColBG, ColLast }; /* color */
+typedef enum {
+ StackLeft, StackBottom, StackRight
+} StackPos; /* stack position*/
+
typedef enum {
TopLeft, TopRight, BotLeft, BotRight
} Corner; /* window corners */
char name[256];
int proto;
int x, y, w, h;
+ int rx, ry, rw, rh; /* revert geometry */
int tx, ty, tw, th; /* title window geometry */
int basew, baseh, incw, inch, maxw, maxh, minw, minh;
int grav;
long flags;
unsigned int border, weight;
- Bool isfloat;
+ Bool isfloat, ismax;
Bool *tags;
Client *next;
Client *prev;
extern const char *tags[]; /* all tags */
extern char stext[1024]; /* status text */
extern int bx, by, bw, bh, bmw; /* bar geometry, bar mode label width */
-extern int mw, screen, sx, sy, sw, sh; /* screen geometry, master width */
+extern int master, screen, sx, sy, sw, sh; /* screen geometry, master dimension*/
extern unsigned int ntags, numlockmask; /* number of tags, dynamic lock mask */
extern void (*handler[LASTEvent])(XEvent *); /* event handler */
extern void (*arrange)(Arg *); /* arrange function, indicates mode */
extern Atom wmatom[WMLast], netatom[NetLast];
-extern Bool running, issel, maximized, *seltag; /* seltag is array of Bool */
-extern Client *clients, *sel, *stack; /* global cleint list and stack */
+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 StackPos stackpos;
extern Window root, barwin;
/* client.c */
extern void ban(Client *c); /* ban c from screen */
+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 Client *getctitle(Window w); /* return client of title window */
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 resizetitle(Client *c); /* resizes c->twin correctly */
extern void updatesize(Client *c); /* update the size structs of c */
extern void updatetitle(Client *c); /* update the name of c */
-extern void togglemax(Arg *arg); /* (un)maximize c */
extern void unmanage(Client *c); /* destroy c */
/* draw.c */
-extern void drawall(); /* draw all visible client titles and the bar */
-extern void drawstatus(); /* draw the bar */
+extern void drawall(void); /* draw all visible client titles and the bar */
+extern void drawstatus(void); /* draw the bar */
extern void drawtitle(Client *c); /* draw title of c */
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(); /* grab all keys defined in config.h */
-extern void procevent(); /* process pending X events */
+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 int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
/* tag.c */
-extern void initrregs(); /* initialize regexps of rules defined in config.h */
+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 focusnext(Arg *arg); /* focuses next visible client, arg is ignored */
extern void focusprev(Arg *arg); /* focuses previous visible client, arg is ignored */
extern Bool isvisible(Client *c); /* returns True if client is visible */
-extern void resizecol(Arg *arg); /* resizes the master width with arg's index value */
-extern void restack(); /* restores z layers of all clients */
+extern void resizecol(Arg *arg); /* resizes the master dimension with arg's index value */
+extern void restack(void); /* restores z layers of all clients */
+extern void togglestackpos(Arg *arg); /* toggles stack position */
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 updatemaster(void); /* updates master dimension */
extern void view(Arg *arg); /* views the tag with arg's index */
extern void viewall(Arg *arg); /* views all tags, arg is ignored */
-extern void zoom(Arg *arg); /* zooms the focused client to master column, arg is ignored */
+extern void zoom(Arg *arg); /* zooms the focused client to master area, arg is ignored */