154 lines
6.7 KiB
C
154 lines
6.7 KiB
C
/* 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;
|
|
int unmapped;
|
|
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 dwmprops, 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;
|
|
|
|
/* 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 */
|
|
Bool loadprops(Client *c); /* loads client properties */
|
|
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 saveprops(Client *c); /* saves client properties */
|
|
void unban(Client *c); /* unbans c */
|
|
void unmanage(Client *c, long state); /* unmanage c */
|
|
void updatesizehints(Client *c); /* update the size hint variables of c */
|
|
void updatetitle(Client *c); /* update the name of c */
|
|
|
|
/* draw.c */
|
|
void drawstatus(void); /* draw the bar */
|
|
void drawtext(const char *text, unsigned long col[ColLast]); /* draw text */
|
|
unsigned int textw(const char *text); /* return the width of text in px*/
|
|
|
|
/* event.c */
|
|
void grabkeys(void); /* grab all keys defined in config.h */
|
|
|
|
/* layout.c */
|
|
void arrange(void); /* arranges all windows depending on the layout in use */
|
|
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 */
|
|
Bool isfloating(void); /* returns True if floating layout is enabled */
|
|
Bool isarrange(void (*func)()); /* returns True if func is the layout function in use */
|
|
void initlayouts(void); /* initialize layout array */
|
|
void loaddwmprops(void); /* loads dwm properties */
|
|
Client *nexttiled(Client *c); /* returns tiled successor of c */
|
|
void restack(void); /* restores z layers of all clients */
|
|
void savedwmprops(void); /* saves dwm properties */
|
|
void setlayout(const char *arg); /* sets layout, NULL means next layout */
|
|
void togglebar(const char *arg); /* shows/hides the bar */
|
|
void togglemax(const char *arg); /* toggles maximization of floating client */
|
|
|
|
/* main.c */
|
|
Bool gettextprop(Window w, Atom atom,
|
|
char *text, unsigned int size); /* return text property, UTF-8 compliant */
|
|
void updatebarpos(void); /* updates the bar position */
|
|
void quit(const char *arg); /* quit dwm nicely */
|
|
int xerror(Display *dsply, XErrorEvent *ee); /* dwm's X error handler */
|
|
|
|
/* tag.c */
|
|
void applyrules(Client *c); /* applies rules to c */
|
|
void compileregs(void); /* initialize regexps of rules defined in config.h */
|
|
Bool isvisible(Client *c); /* returns True if client is visible */
|
|
void tag(const char *arg); /* tags sel with arg's index */
|
|
void togglefloating(const char *arg); /* toggles sel between floating/tiled state */
|
|
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 */
|