diff options
Diffstat (limited to 'dwm.c')
| -rw-r--r-- | dwm.c | 1847 |
1 files changed, 1847 insertions, 0 deletions
@@ -0,0 +1,1847 @@ +/* See LICENSE file for copyright and license details. */ +#include <errno.h> +#include <locale.h> +#include <regex.h> +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/select.h> +#include <sys/wait.h> +#include <X11/cursorfont.h> +#include <X11/keysym.h> +#include <X11/Xatom.h> +#include <X11/Xproto.h> +#include <X11/Xutil.h> + +/* macros */ +#define BUTTONMASK (ButtonPressMask | ButtonReleaseMask) +#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask)) +#define MOUSEMASK (BUTTONMASK | PointerMotionMask) + +/* enums */ +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 */ + +/* typedefs */ +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 */ + +typedef struct { + unsigned long mod; + KeySym keysym; + void (*func)(const char *arg); + const char *arg; +} Key; + +typedef struct { + const char *symbol; + void (*arrange)(void); +} Layout; + +typedef struct { + const char *prop; + const char *tags; + Bool isfloating; +} Rule; + +typedef struct { + regex_t *propregex; + regex_t *tagregex; +} Regs; + +/* functions */ +static void eprint(const char *errstr, ...); +static void *emallocz(unsigned int size); +static void spawn(const char *arg); +static void drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]); +static unsigned long initcolor(const char *colstr); +static void initfont(const char *fontstr); +static Bool isoccupied(unsigned int t); +static unsigned int textnw(const char *text, unsigned int len); +static void drawtext(const char *text, unsigned long col[ColLast]); +static void drawbar(void); +static void initstyle(void); +static void initbar(void); +static unsigned int textw(const char *text); +static void togglebar(const char *arg); +static void updatebarpos(void); +static void attachstack(Client *c); +static void detachstack(Client *c); +static void grabbuttons(Client *c, Bool focused); +static Bool isprotodel(Client *c); +static void setclientstate(Client *c, long state); +static int xerrordummy(Display *dsply, XErrorEvent *ee); +static void ban(Client *c); +static void configure(Client *c); +static void killclient(const char *arg); +static void manage(Window w, XWindowAttributes *wa); +static void resize(Client *c, int x, int y, int w, int h, Bool sizehints); +static void unban(Client *c); +static void unmanage(Client *c); +static void updatesizehints(Client *c); +static void updatetitle(Client *c); +static Client *getclient(Window w); +static void movemouse(Client *c); +static void resizemouse(Client *c); +static void buttonpress(XEvent *e); +static void configurerequest(XEvent *e); +static void configurenotify(XEvent *e); +static void destroynotify(XEvent *e); +static void enternotify(XEvent *e); +static void expose(XEvent *e); +static void keypress(XEvent *e); +static void leavenotify(XEvent *e); +static void mappingnotify(XEvent *e); +static void maprequest(XEvent *e); +static void propertynotify(XEvent *e); +static void unmapnotify(XEvent *e); +static void grabkeys(void); +static unsigned int idxoftag(const char *tag); +static void floating(void); /* default floating layout */ +static void applyrules(Client *c); +static void compileregs(void); +static void focusnext(const char *arg); +static void focusprev(const char *arg); +static void initlayouts(void); +static Bool isfloating(void); +static Bool isvisible(Client *c); +static void restack(void); +static void setlayout(const char *arg); +static void tag(const char *arg); +static void togglefloating(const char *arg); +static void togglemax(const char *arg); +static void toggletag(const char *arg); +static void toggleview(const char *arg); +static void view(const char *arg); +static void cleanup(void); +static long getstate(Window w); +static void scan(void); +static void setup(void); +static int xerrorstart(Display *dsply, XErrorEvent *ee); +static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size); +static void quit(const char *arg); +static int xerror(Display *dpy, XErrorEvent *ee); +static void arrange(void); +static void attach(Client *c); +static void detach(Client *c); +static void focus(Client *c); +static Bool isarrange(void (*func)()); +static Client *nexttiled(Client *c); +static void setmwfact(const char *arg); +static void tile(void); +static void zoom(const char *arg); + +#include "config.h" + +/* variables */ +static char stext[256]; +static double mwfact = MWFACT; +static int screen, sx, sy, sw, sh, wax, way, waw, wah; +static int (*xerrorxlib)(Display *, XErrorEvent *); +static unsigned int bh; +static unsigned int blw = 0; +static unsigned int bpos = BARPOS; +static unsigned int ltidx = 0; /* default */ +static unsigned int nlayouts = 0; +static unsigned int nrules = 0; +static unsigned int ntags; +static unsigned int numlockmask = 0; +static void (*handler[LASTEvent]) (XEvent *) = { + [ButtonPress] = buttonpress, + [ConfigureRequest] = configurerequest, + [ConfigureNotify] = configurenotify, + [DestroyNotify] = destroynotify, + [EnterNotify] = enternotify, + [LeaveNotify] = leavenotify, + [Expose] = expose, + [KeyPress] = keypress, + [MappingNotify] = mappingnotify, + [MapRequest] = maprequest, + [PropertyNotify] = propertynotify, + [UnmapNotify] = unmapnotify +}; +static Atom wmatom[WMLast], netatom[NetLast]; +static Bool otherwm, readin; +static Bool running = True; +static Bool *seltags; +static Bool selscreen = True; +static Client *clients = NULL; +static Client *sel = NULL; +static Client *stack = NULL; +static Cursor cursor[CurLast]; +static Display *dpy; +static DC dc = {0}; +static Window barwin, root; +static Regs *regs = NULL; + +static void +eprint(const char *errstr, ...) { + va_list ap; + + va_start(ap, errstr); + vfprintf(stderr, errstr, ap); + va_end(ap); + exit(EXIT_FAILURE); +} + +static void * +emallocz(unsigned int size) { + void *res = calloc(1, size); + + if(!res) + eprint("fatal: could not malloc() %u bytes\n", size); + return res; +} + +static void +spawn(const char *arg) { + static char *shell = NULL; + + if(!shell && !(shell = getenv("SHELL"))) + shell = "/bin/sh"; + if(!arg) + return; + /* The double-fork construct avoids zombie processes and keeps the code + * clean from stupid signal handlers. */ + if(fork() == 0) { + if(fork() == 0) { + if(dpy) + close(ConnectionNumber(dpy)); + setsid(); + execl(shell, shell, "-c", arg, (char *)NULL); + fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg); + perror(" failed"); + } + exit(0); + } + wait(0); +} + +static void +drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) { + int x; + XGCValues gcv; + XRectangle r = { dc.x, dc.y, dc.w, dc.h }; + + gcv.foreground = col[ColFG]; + XChangeGC(dpy, dc.gc, GCForeground, &gcv); + x = (dc.font.ascent + dc.font.descent + 2) / 4; + r.x = dc.x + 1; + r.y = dc.y + 1; + if(filled) { + r.width = r.height = x + 1; + XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); + } + else if(empty) { + r.width = r.height = x; + XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1); + } +} + +static unsigned long +initcolor(const char *colstr) { + Colormap cmap = DefaultColormap(dpy, screen); + XColor color; + + if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color)) + eprint("error, cannot allocate color '%s'\n", colstr); + return color.pixel; +} + +static void +initfont(const char *fontstr) { + char *def, **missing; + int i, n; + + missing = NULL; + if(dc.font.set) + XFreeFontSet(dpy, dc.font.set); + dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def); + if(missing) { + while(n--) + fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]); + XFreeStringList(missing); + } + if(dc.font.set) { + XFontSetExtents *font_extents; + XFontStruct **xfonts; + char **font_names; + dc.font.ascent = dc.font.descent = 0; + font_extents = XExtentsOfFontSet(dc.font.set); + n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names); + for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) { + if(dc.font.ascent < (*xfonts)->ascent) + dc.font.ascent = (*xfonts)->ascent; + if(dc.font.descent < (*xfonts)->descent) + dc.font.descent = (*xfonts)->descent; + xfonts++; + } + } + else { + if(dc.font.xfont) + XFreeFont(dpy, dc.font.xfont); + dc.font.xfont = NULL; + if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)) + || !(dc.font.xfont = XLoadQueryFont(dpy, "fixed"))) + eprint("error, cannot load font: '%s'\n", fontstr); + dc.font.ascent = dc.font.xfont->ascent; + dc.font.descent = dc.font.xfont->descent; + } + dc.font.height = dc.font.ascent + dc.font.descent; +} + +static Bool +isoccupied(unsigned int t) { + Client *c; + + for(c = clients; c; c = c->next) + if(c->tags[t]) + return True; + return False; +} + +static unsigned int +textnw(const char *text, unsigned int len) { + XRectangle r; + + if(dc.font.set) { + XmbTextExtents(dc.font.set, text, len, NULL, &r); + return r.width; + } + return XTextWidth(dc.font.xfont, text, len); +} + +static void +drawtext(const char *text, unsigned long col[ColLast]) { + int x, y, w, h; + static char buf[256]; + unsigned int len, olen; + XRectangle r = { dc.x, dc.y, dc.w, dc.h }; + + XSetForeground(dpy, dc.gc, col[ColBG]); + XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); + if(!text) + return; + w = 0; + olen = len = strlen(text); + if(len >= sizeof buf) + len = sizeof buf - 1; + memcpy(buf, text, len); + buf[len] = 0; + h = dc.font.ascent + dc.font.descent; + y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent; + x = dc.x + (h / 2); + /* shorten text if necessary */ + while(len && (w = textnw(buf, len)) > dc.w - h) + buf[--len] = 0; + if(len < olen) { + if(len > 1) + buf[len - 1] = '.'; + if(len > 2) + buf[len - 2] = '.'; + if(len > 3) + buf[len - 3] = '.'; + } + if(w > dc.w) + return; /* too long */ + XSetForeground(dpy, dc.gc, col[ColFG]); + if(dc.font.set) + XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len); + else + XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len); +} + +static void +drawbar(void) { + int i, x; + + dc.x = dc.y = 0; + for(i = 0; i < ntags; i++) { + dc.w = textw(tags[i]); + if(seltags[i]) { + drawtext(tags[i], dc.sel); + drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel); + } + else { + drawtext(tags[i], dc.norm); + drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm); + } + dc.x += dc.w; + } + dc.w = blw; + drawtext(layouts[ltidx].symbol, dc.norm); + x = dc.x + dc.w; + dc.w = textw(stext); + dc.x = sw - dc.w; + if(dc.x < x) { + dc.x = x; + dc.w = sw - x; + } + drawtext(stext, dc.norm); + if((dc.w = dc.x - x) > bh) { + dc.x = x; + if(sel) { + drawtext(sel->name, dc.sel); + drawsquare(sel->ismax, sel->isfloating, dc.sel); + } + else + drawtext(NULL, dc.norm); + } + XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0); + XSync(dpy, False); +} + +static void +initstyle(void) { + dc.norm[ColBorder] = initcolor(NORMBORDERCOLOR); + dc.norm[ColBG] = initcolor(NORMBGCOLOR); + dc.norm[ColFG] = initcolor(NORMFGCOLOR); + dc.sel[ColBorder] = initcolor(SELBORDERCOLOR); + dc.sel[ColBG] = initcolor(SELBGCOLOR); + dc.sel[ColFG] = initcolor(SELFGCOLOR); + initfont(FONT); + dc.h = bh = dc.font.height + 2; +} + +static void +initbar(void) { + XSetWindowAttributes wa; + + wa.override_redirect = 1; + wa.background_pixmap = ParentRelative; + wa.event_mask = ButtonPressMask | ExposureMask; + barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0, + DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen), + CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa); + XDefineCursor(dpy, barwin, cursor[CurNormal]); + updatebarpos(); + XMapRaised(dpy, barwin); + strcpy(stext, "dwm-"VERSION); + dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); + dc.gc = XCreateGC(dpy, root, 0, 0); + XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter); + if(!dc.font.set) + XSetFont(dpy, dc.gc, dc.font.xfont->fid); +} + +static unsigned int +textw(const char *text) { + return textnw(text, strlen(text)) + dc.font.height; +} + +static void +togglebar(const char *arg) { + if(bpos == BarOff) + bpos = (BARPOS == BarOff) ? BarTop : BARPOS; + else + bpos = BarOff; + updatebarpos(); + arrange(); +} + +static void +updatebarpos(void) { + XEvent ev; + + wax = sx; + way = sy; + wah = sh; + waw = sw; + switch(bpos) { + default: + wah -= bh; + way += bh; + XMoveWindow(dpy, barwin, sx, sy); + break; + case BarBot: + wah -= bh; + XMoveWindow(dpy, barwin, sx, sy + wah); + break; + case BarOff: + XMoveWindow(dpy, barwin, sx, sy - bh); + break; + } + XSync(dpy, False); + while(XCheckMaskEvent(dpy, EnterWindowMask, &ev)); +} + +static void +attachstack(Client *c) { + c->snext = stack; + stack = c; +} + +static void +detachstack(Client *c) { + Client **tc; + + for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext); + *tc = c->snext; +} + +static void +grabbuttons(Client *c, Bool focused) { + XUngrabButton(dpy, AnyButton, AnyModifier, c->win); + + if(focused) { + XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + + XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + + XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); + } + else + XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK, + GrabModeAsync, GrabModeSync, None, None); +} + +static Bool +isprotodel(Client *c) { + int i, n; + Atom *protocols; + Bool ret = False; + + if(XGetWMProtocols(dpy, c->win, &protocols, &n)) { + for(i = 0; !ret && i < n; i++) + if(protocols[i] == wmatom[WMDelete]) + ret = True; + XFree(protocols); + } + return ret; +} + +static void +setclientstate(Client *c, long state) { + long data[] = {state, None}; + + XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32, + PropModeReplace, (unsigned char *)data, 2); +} + +static int +xerrordummy(Display *dsply, XErrorEvent *ee) { + return 0; +} + +static void +ban(Client *c) { + if(c->isbanned) + return; + XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y); + c->isbanned = True; +} + +static void +configure(Client *c) { + XConfigureEvent ce; + + ce.type = ConfigureNotify; + ce.display = dpy; + ce.event = c->win; + ce.window = c->win; + ce.x = c->x; + ce.y = c->y; + ce.width = c->w; + ce.height = c->h; + ce.border_width = c->border; + ce.above = None; + ce.override_redirect = False; + XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce); +} + +static void +killclient(const char *arg) { + XEvent ev; + + if(!sel) + return; + if(isprotodel(sel)) { + ev.type = ClientMessage; + ev.xclient.window = sel->win; + ev.xclient.message_type = wmatom[WMProtocols]; + ev.xclient.format = 32; + ev.xclient.data.l[0] = wmatom[WMDelete]; + ev.xclient.data.l[1] = CurrentTime; + XSendEvent(dpy, sel->win, False, NoEventMask, &ev); + } + else + XKillClient(dpy, sel->win); +} + +static void +manage(Window w, XWindowAttributes *wa) { + unsigned int i; + Client *c, *t = NULL; + Window trans; + Status rettrans; + XWindowChanges wc; + + c = emallocz(sizeof(Client)); + c->tags = emallocz(ntags * sizeof(Bool)); + c->win = w; + c->x = wa->x; + c->y = wa->y; + c->w = wa->width; + c->h = wa->height; + c->oldborder = wa->border_width; + if(c->w == sw && c->h == sh) { + c->x = sx; + c->y = sy; + c->border = wa->border_width; + } + else { + if(c->x + c->w + 2 * c->border > wax + waw) + c->x = wax + waw - c->w - 2 * c->border; + if(c->y + c->h + 2 * c->border > way + wah) + c->y = way + wah - c->h - 2 * c->border; + if(c->x < wax) + c->x = wax; + if(c->y < way) + c->y = way; + c->border = BORDERPX; + } + wc.border_width = c->border; + XConfigureWindow(dpy, w, CWBorderWidth, &wc); + XSetWindowBorder(dpy, w, dc.norm[ColBorder]); + configure(c); /* propagates border_width, if size doesn't change */ + updatesizehints(c); + XSelectInput(dpy, w, + StructureNotifyMask | PropertyChangeMask | EnterWindowMask); + grabbuttons(c, False); + updatetitle(c); + if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success)) + for(t = clients; t && t->win != trans; t = t->next); + if(t) + for(i = 0; i < ntags; i++) + c->tags[i] = t->tags[i]; + applyrules(c); + if(!c->isfloating) + c->isfloating = (rettrans == Success) || c->isfixed; + attach(c); + attachstack(c); + XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */ + ban(c); + XMapWindow(dpy, c->win); + setclientstate(c, NormalState); + arrange(); +} + +static void +resize(Client *c, int x, int y, int w, int h, Bool sizehints) { + double dx, dy, max, min, ratio; + XWindowChanges wc; + + if(sizehints) { + if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0 && (w - c->basew) > 0) { + dx = (double)(w - c->basew); + dy = (double)(h - c->baseh); + min = (double)(c->minax) / (double)(c->minay); + max = (double)(c->maxax) / (double)(c->maxay); + ratio = dx / dy; + if(max > 0 && min > 0 && ratio > 0) { + if(ratio < min) { + dy = (dx * min + dy) / (min * min + 1); + dx = dy * min; + w = (int)dx + c->basew; + h = (int)dy + c->baseh; + } + else if(ratio > max) { + dy = (dx * min + dy) / (max * max + 1); + dx = dy * min; + w = (int)dx + c->basew; + h = (int)dy + c->baseh; + } + } + } + if(c->minw && w < c->minw) + w = c->minw; + if(c->minh && h < c->minh) + h = c->minh; + if(c->maxw && w > c->maxw) + w = c->maxw; + if(c->maxh && h > c->maxh) + h = c->maxh; + if(c->incw) + w -= (w - c->basew) % c->incw; + if(c->inch) + h -= (h - c->baseh) % c->inch; + } + if(w <= 0 || h <= 0) + return; + /* offscreen appearance fixes */ + if(x > sw) + x = sw - w - 2 * c->border; + if(y > sh) + y = sh - h - 2 * c->border; + if(x + w + 2 * c->border < sx) + x = sx; + if(y + h + 2 * c->border < sy) + y = sy; + if(c->x != x || c->y != y || c->w != w || c->h != h) { + c->x = wc.x = x; + c->y = wc.y = y; + c->w = wc.width = w; + c->h = wc.height = h; + wc.border_width = c->border; + XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc); + configure(c); + XSync(dpy, False); + } +} + +static void +unban(Client *c) { + if(!c->isbanned) + return; + XMoveWindow(dpy, c->win, c->x, c->y); + c->isbanned = False; +} + +static void +unmanage(Client *c) { + XWindowChanges wc; + + wc.border_width = c->oldborder; + /* The server grab construct avoids race conditions. */ + XGrabServer(dpy); + XSetErrorHandler(xerrordummy); + XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */ + detach(c); + detachstack(c); + if(sel == c) + focus(NULL); + XUngrabButton(dpy, AnyButton, AnyModifier, c->win); + setclientstate(c, WithdrawnState); + free(c->tags); + free(c); + XSync(dpy, False); + XSetErrorHandler(xerror); + XUngrabServer(dpy); + arrange(); +} + +static void +updatesizehints(Client *c) { + long msize; + XSizeHints size; + + if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags) + size.flags = PSize; + c->flags = size.flags; + if(c->flags & PBaseSize) { + c->basew = size.base_width; + c->baseh = size.base_height; + } + else if(c->flags & PMinSize) { + c->basew = size.min_width; + c->baseh = size.min_height; + } + else + c->basew = c->baseh = 0; + if(c->flags & PResizeInc) { + c->incw = size.width_inc; + c->inch = size.height_inc; + } + else + c->incw = c->inch = 0; + if(c->flags & PMaxSize) { + c->maxw = size.max_width; + c->maxh = size.max_height; + } + else + c->maxw = c->maxh = 0; + if(c->flags & PMinSize) { + c->minw = size.min_width; + c->minh = size.min_height; + } + else if(c->flags & PBaseSize) { + c->minw = size.base_width; + c->minh = size.base_height; + } + else + c->minw = c->minh = 0; + if(c->flags & PAspect) { + c->minax = size.min_aspect.x; + c->maxax = size.max_aspect.x; + c->minay = size.min_aspect.y; + c->maxay = size.max_aspect.y; + } + else + c->minax = c->maxax = c->minay = c->maxay = 0; + c->isfixed = (c->maxw && c->minw && c->maxh && c->minh + && c->maxw == c->minw && c->maxh == c->minh); +} + +static void +updatetitle(Client *c) { + if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name)) + gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name); +} + +static Client * +getclient(Window w) { + Client *c; + + for(c = clients; c && c->win != w; c = c->next); + return c; +} + +static void +movemouse(Client *c) { + int x1, y1, ocx, ocy, di, nx, ny; + unsigned int dui; + Window dummy; + XEvent ev; + + ocx = nx = c->x; + ocy = ny = c->y; + if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync, + None, cursor[CurMove], CurrentTime) != GrabSuccess) + return; + c->ismax = False; + XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui); + for(;;) { + XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev); + switch (ev.type) { + case ButtonRelease: + XUngrabPointer(dpy, CurrentTime); + return; + case ConfigureRequest: + case Expose: + case MapRequest: + handler[ev.type](&ev); + break; + case MotionNotify: + XSync(dpy, False); + nx = ocx + (ev.xmotion.x - x1); + ny = ocy + (ev.xmotion.y - y1); + if(abs(wax + nx) < SNAP) + nx = wax; + else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP) + nx = wax + waw - c->w - 2 * c->border; + if(abs(way - ny) < SNAP) + ny = way; + else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP) + ny = way + wah - c->h - 2 * c->border; + resize(c, nx, ny, c->w, c->h, False); + break; + } + } +} + +static void +resizemouse(Client *c) { + int ocx, ocy; + int nw, nh; + XEvent ev; + + ocx = c->x; + ocy = c->y; + if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync, + None, cursor[CurResize], CurrentTime) != GrabSuccess) + return; + c->ismax = False; + XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1); + for(;;) { + XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev); + switch(ev.type) { + case ButtonRelease: + XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, + c->w + c->border - 1, c->h + c->border - 1); + XUngrabPointer(dpy, CurrentTime); + while(XCheckMaskEvent(dpy, EnterWindowMask, &ev)); + return; + case ConfigureRequest: + case Expose: + case MapRequest: + handler[ev.type](&ev); + break; + case MotionNotify: + XSync(dpy, False); + if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0) + nw = 1; + if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0) + nh = 1; + resize(c, c->x, c->y, nw, nh, True); + break; + } + } +} + +static void +buttonpress(XEvent *e) { + unsigned int i, x; + Client *c; + XButtonPressedEvent *ev = &e->xbutton; + + if(barwin == ev->window) { + x = 0; + for(i = 0; i < ntags; i++) { + x += textw(tags[i]); + if(ev->x < x) { + if(ev->button == Button1) { + if(ev->state & MODKEY) + tag(tags[i]); + else + view(tags[i]); + } + else if(ev->button == Button3) { + if(ev->state & MODKEY) + toggletag(tags[i]); + else + toggleview(tags[i]); + } + return; + } + } + if((ev->x < x + blw) && ev->button == Button1) + setlayout(NULL); + } + else if((c = getclient(ev->window))) { + focus(c); + if(CLEANMASK(ev->state) != MODKEY) + return; + if(ev->button == Button1 && (isfloating() || c->isfloating)) { + restack(); + movemouse(c); + } + else if(ev->button == Button2) + zoom(NULL); + else if(ev->button == Button3 + && (isfloating() || c->isfloating) && !c->isfixed) + { + restack(); + resizemouse(c); + } + } +} + +static void +configurerequest(XEvent *e) { + Client *c; + XConfigureRequestEvent *ev = &e->xconfigurerequest; + XWindowChanges wc; + + if((c = getclient(ev->window))) { + c->ismax = False; + if(ev->value_mask & CWBorderWidth) + c->border = ev->border_width; + if(c->isfixed || c->isfloating || isfloating()) { + if(ev->value_mask & CWX) + c->x = ev->x; + if(ev->value_mask & CWY) + c->y = ev->y; + if(ev->value_mask & CWWidth) + c->w = ev->width; + if(ev->value_mask & CWHeight) + c->h = ev->height; + if((c->x + c->w) > sw && c->isfloating) + c->x = sw / 2 - c->w / 2; /* center in x direction */ + if((c->y + c->h) > sh && c->isfloating) + c->y = sh / 2 - c->h / 2; /* center in y direction */ + if((ev->value_mask & (CWX | CWY)) + && !(ev->value_mask & (CWWidth | CWHeight))) + configure(c); + if(isvisible(c)) + XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); + } + else + configure(c); + } + else { + wc.x = ev->x; + wc.y = ev->y; + wc.width = ev->width; + wc.height = ev->height; + wc.border_width = ev->border_width; + wc.sibling = ev->above; + wc.stack_mode = ev->detail; + XConfigureWindow(dpy, ev->window, ev->value_mask, &wc); + } + XSync(dpy, False); +} + +static void +configurenotify(XEvent *e) { + XConfigureEvent *ev = &e->xconfigure; + + if (ev->window == root && (ev->width != sw || ev->height != sh)) { + sw = ev->width; + sh = ev->height; + XFreePixmap(dpy, dc.drawable); + dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); + XResizeWindow(dpy, barwin, sw, bh); + updatebarpos(); + arrange(); + } +} + +static void +destroynotify(XEvent *e) { + Client *c; + XDestroyWindowEvent *ev = &e->xdestroywindow; + + if((c = getclient(ev->window))) + unmanage(c); +} + +static void +enternotify(XEvent *e) { + Client *c; + XCrossingEvent *ev = &e->xcrossing; + + if(ev->mode != NotifyNormal || ev->detail == NotifyInferior) + return; + if((c = getclient(ev->window))) + focus(c); + else if(ev->window == root) { + selscreen = True; + focus(NULL); + } +} + +static void +expose(XEvent *e) { + XExposeEvent *ev = &e->xexpose; + + if(ev->count == 0) { + if(barwin == ev->window) + drawbar(); + } +} + +static void +keypress(XEvent *e) { + KEYS + unsigned int len = sizeof keys / sizeof keys[0]; + unsigned int i; + KeySym keysym; + XKeyEvent *ev = &e->xkey; + + keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0); + for(i = 0; i < len; i++) + if(keysym == keys[i].keysym + && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)) + { + if(keys[i].func) + keys[i].func(keys[i].arg); + } +} + +static void +leavenotify(XEvent *e) { + XCrossingEvent *ev = &e->xcrossing; + + if((ev->window == root) && !ev->same_screen) { + selscreen = False; + focus(NULL); + } +} + +static void +mappingnotify(XEvent *e) { + XMappingEvent *ev = &e->xmapping; + + XRefreshKeyboardMapping(ev); + if(ev->request == MappingKeyboard) + grabkeys(); +} + +static void +maprequest(XEvent *e) { + static XWindowAttributes wa; + XMapRequestEvent *ev = &e->xmaprequest; + + if(!XGetWindowAttributes(dpy, ev->window, &wa)) + return; + if(wa.override_redirect) + return; + if(!getclient(ev->window)) + manage(ev->window, &wa); +} + +static void +propertynotify(XEvent *e) { + Client *c; + Window trans; + XPropertyEvent *ev = &e->xproperty; + + if(ev->state == PropertyDelete) + return; /* ignore */ + if((c = getclient(ev->window))) { + switch (ev->atom) { + default: break; + case XA_WM_TRANSIENT_FOR: + XGetTransientForHint(dpy, c->win, &trans); + if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL))) + arrange(); + break; + case XA_WM_NORMAL_HINTS: + updatesizehints(c); + break; + } + if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) { + updatetitle(c); + if(c == sel) + drawbar(); + } + } +} + +static void +unmapnotify(XEvent *e) { + Client *c; + XUnmapEvent *ev = &e->xunmap; + + if((c = getclient(ev->window))) + unmanage(c); +} + +static void +grabkeys(void) { + KEYS + unsigned int len = sizeof keys / sizeof keys[0]; + unsigned int i; + KeyCode code; + + XUngrabKey(dpy, AnyKey, AnyModifier, root); + for(i = 0; i < len; i++) { + code = XKeysymToKeycode(dpy, keys[i].keysym); + XGrabKey(dpy, code, keys[i].mod, root, True, + GrabModeAsync, GrabModeAsync); + XGrabKey(dpy, code, keys[i].mod | LockMask, root, True, + GrabModeAsync, GrabModeAsync); + XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True, + GrabModeAsync, GrabModeAsync); + XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True, + GrabModeAsync, GrabModeAsync); + } +} + +static unsigned int +idxoftag(const char *tag) { + unsigned int i; + + for(i = 0; i < ntags; i++) + if(tags[i] == tag) + return i; + return 0; +} + +static void +floating(void) { /* default floating layout */ + Client *c; + + for(c = clients; c; c = c->next) + if(isvisible(c)) + resize(c, c->x, c->y, c->w, c->h, True); +} + +static void +applyrules(Client *c) { + static char buf[512]; + unsigned int i, j; + regmatch_t tmp; + Bool matched = False; + XClassHint ch = { 0 }; + + /* rule matching */ + XGetClassHint(dpy, c->win, &ch); + snprintf(buf, sizeof buf, "%s:%s:%s", + ch.res_class ? ch.res_class : "", + ch.res_name ? ch.res_name : "", c->name); + for(i = 0; i < nrules; i++) + if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) { + c->isfloating = rules[i].isfloating; + for(j = 0; regs[i].tagregex && j < ntags; j++) { + if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) { + matched = True; + c->tags[j] = True; + } + } + } + if(ch.res_class) + XFree(ch.res_class); + if(ch.res_name) + XFree(ch.res_name); + if(!matched) + for(i = 0; i < ntags; i++) + c->tags[i] = seltags[i]; +} + +static void +compileregs(void) { + unsigned int i; + regex_t *reg; + + if(regs) + return; + nrules = sizeof rules / sizeof rules[0]; + regs = emallocz(nrules * sizeof(Regs)); + for(i = 0; i < nrules; i++) { + if(rules[i].prop) { + reg = emallocz(sizeof(regex_t)); + if(regcomp(reg, rules[i].prop, REG_EXTENDED)) + free(reg); + else + regs[i].propregex = reg; + } + if(rules[i].tags) { + reg = emallocz(sizeof(regex_t)); + if(regcomp(reg, rules[i].tags, REG_EXTENDED)) + free(reg); + else + regs[i].tagregex = reg; + } + } +} + +static void +focusnext(const char *arg) { + Client *c; + + if(!sel) + return; + for(c = sel->next; c && !isvisible(c); c = c->next); + if(!c) + for(c = clients; c && !isvisible(c); c = c->next); + if(c) { + focus(c); + restack(); + } +} + +static void +focusprev(const char *arg) { + Client *c; + + if(!sel) + return; + for(c = sel->prev; c && !isvisible(c); c = c->prev); + if(!c) { + for(c = clients; c && c->next; c = c->next); + for(; c && !isvisible(c); c = c->prev); + } + if(c) { + focus(c); + restack(); + } +} + +static void +initlayouts(void) { + unsigned int i, w; + + nlayouts = sizeof layouts / sizeof layouts[0]; + for(blw = i = 0; i < nlayouts; i++) { + w = textw(layouts[i].symbol); + if(w > blw) + blw = w; + } +} + +static Bool +isfloating(void) { + return layouts[ltidx].arrange == floating; +} + +static Bool +isvisible(Client *c) { + unsigned int i; + + for(i = 0; i < ntags; i++) + if(c->tags[i] && seltags[i]) + return True; + return False; +} + +static void +restack(void) { + Client *c; + XEvent ev; + XWindowChanges wc; + + drawbar(); + if(!sel) + return; + if(sel->isfloating || isfloating()) + XRaiseWindow(dpy, sel->win); + if(!isfloating()) { + wc.stack_mode = Below; + wc.sibling = barwin; + if(!sel->isfloating) { + XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc); + wc.sibling = sel->win; + } + for(c = nexttiled(clients); c; c = nexttiled(c->next)) { + if(c == sel) + continue; + XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc); + wc.sibling = c->win; + } + } + XSync(dpy, False); + while(XCheckMaskEvent(dpy, EnterWindowMask, &ev)); +} + +static void +setlayout(const char *arg) { + unsigned int i; + + if(!arg) { + if(++ltidx == nlayouts) + ltidx = 0;; + } + else { + for(i = 0; i < nlayouts; i++) + if(!strcmp(arg, layouts[i].symbol)) + break; + if(i == nlayouts) + return; + ltidx = i; + } + if(sel) + arrange(); + else + drawbar(); +} + +static void +tag(const char *arg) { + unsigned int i; + + if(!sel) + return; + for(i = 0; i < ntags; i++) + sel->tags[i] = arg == NULL; + i = idxoftag(arg); + if(i >= 0 && i < ntags) + sel->tags[i] = True; + arrange(); +} + +static void +togglefloating(const char *arg) { + if(!sel) + return; + sel->isfloating = !sel->isfloating; + if(sel->isfloating) + resize(sel, sel->x, sel->y, sel->w, sel->h, True); + arrange(); +} + +static void +togglemax(const char *arg) { + XEvent ev; + + if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed) + return; + if((sel->ismax = !sel->ismax)) { + sel->rx = sel->x; + sel->ry = sel->y; + sel->rw = sel->w; + sel->rh = sel->h; + resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True); + } + else + resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True); + drawbar(); + while(XCheckMaskEvent(dpy, EnterWindowMask, &ev)); +} + +static void +toggletag(const char *arg) { + unsigned int i, j; + + if(!sel) + return; + i = idxoftag(arg); + sel->tags[i] = !sel->tags[i]; + for(j = 0; j < ntags && !sel->tags[j]; j++); + if(j == ntags) + sel->tags[i] = True; + arrange(); +} + +static void +toggleview(const char *arg) { + unsigned int i, j; + + i = idxoftag(arg); + seltags[i] = !seltags[i]; + for(j = 0; j < ntags && !seltags[j]; j++); + if(j == ntags) + seltags[i] = True; /* cannot toggle last view */ + arrange(); +} + +static void +view(const char *arg) { + unsigned int i; + + for(i = 0; i < ntags; i++) + seltags[i] = arg == NULL; + i = idxoftag(arg); + if(i >= 0 && i < ntags) + seltags[i] = True; + arrange(); +} + +static void +cleanup(void) { + close(STDIN_FILENO); + while(stack) { + unban(stack); + unmanage(stack); + } + if(dc.font.set) + XFreeFontSet(dpy, dc.font.set); + else + XFreeFont(dpy, dc.font.xfont); + XUngrabKey(dpy, AnyKey, AnyModifier, root); + XFreePixmap(dpy, dc.drawable); + XFreeGC(dpy, dc.gc); + XDestroyWindow(dpy, barwin); + XFreeCursor(dpy, cursor[CurNormal]); + XFreeCursor(dpy, cursor[CurResize]); + XFreeCursor(dpy, cursor[CurMove]); + XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); + XSync(dpy, False); + free(seltags); +} + +static long +getstate(Window w) { + int format, status; + long result = -1; + unsigned char *p = NULL; + unsigned long n, extra; + Atom real; + + status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState], + &real, &format, &n, &extra, (unsigned char **)&p); + if(status != Success) + return -1; + if(n != 0) + result = *p; + XFree(p); + return result; +} + +static void +scan(void) { + unsigned int i, num; + Window *wins, d1, d2; + XWindowAttributes wa; + + wins = NULL; + if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { + for(i = 0; i < num; i++) { + if(!XGetWindowAttributes(dpy, wins[i], &wa) + || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) + continue; + if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState) + manage(wins[i], &wa); + } + for(i = 0; i < num; i++) { /* now the transients */ + if(!XGetWindowAttributes(dpy, wins[i], &wa)) + continue; + if(XGetTransientForHint(dpy, wins[i], &d1) + && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)) + manage(wins[i], &wa); + } + } + if(wins) + XFree(wins); +} + +static void +setup(void) { + int i, j; + unsigned int mask; + Window w; + XModifierKeymap *modmap; + XSetWindowAttributes wa; + + /* init atoms */ + wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); + wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); + wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False); + wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False); + netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); + netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); + XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32, + PropModeReplace, (unsigned char *) netatom, NetLast); + /* init cursors */ + cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); + cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); + cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); + /* init modifier map */ + modmap = XGetModifierMapping(dpy); + for (i = 0; i < 8; i++) + for (j = 0; j < modmap->max_keypermod; j++) { + if(modmap->modifiermap[i * modmap->max_keypermod + j] + == XKeysymToKeycode(dpy, XK_Num_Lock)) + numlockmask = (1 << i); + } + XFreeModifiermap(modmap); + /* select for events */ + wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask + | EnterWindowMask | LeaveWindowMask | StructureNotifyMask; + wa.cursor = cursor[CurNormal]; + XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); + XSelectInput(dpy, root, wa.event_mask); + grabkeys(); + compileregs(); + for(ntags = 0; tags[ntags]; ntags++); + seltags = emallocz(sizeof(Bool) * ntags); + seltags[0] = True; + /* geometry */ + sx = sy = 0; + sw = DisplayWidth(dpy, screen); + sh = DisplayHeight(dpy, screen); + initstyle(); + initlayouts(); + initbar(); + /* multihead support */ + selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); +} + +/* + * Startup Error handler to check if another window manager + * is already running. + */ +static int +xerrorstart(Display *dsply, XErrorEvent *ee) { + otherwm = True; + return -1; +} + +static Bool +gettextprop(Window w, Atom atom, char *text, unsigned int size) { + char **list = NULL; + int n; + XTextProperty name; + + if(!text || size == 0) + return False; + text[0] = '\0'; + XGetTextProperty(dpy, w, &name, atom); + if(!name.nitems) + return False; + if(name.encoding == XA_STRING) + strncpy(text, (char *)name.value, size - 1); + else { + if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success + && n > 0 && *list) + { + strncpy(text, *list, size - 1); + XFreeStringList(list); + } + } + text[size - 1] = '\0'; + XFree(name.value); + return True; +} + +static void +quit(const char *arg) { + readin = running = False; +} + +/* There's no way to check accesses to destroyed windows, thus those cases are + * ignored (especially on UnmapNotify's). Other types of errors call Xlibs + * default error handler, which may call exit. + */ +static int +xerror(Display *dpy, XErrorEvent *ee) { + if(ee->error_code == BadWindow + || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch) + || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable) + || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable) + || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable) + || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch) + || (ee->request_code == X_GrabKey && ee->error_code == BadAccess) + || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable)) + return 0; + fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n", + ee->request_code, ee->error_code); + return xerrorxlib(dpy, ee); /* may call exit */ +} + +static void +arrange(void) { + Client *c; + + for(c = clients; c; c = c->next) + if(isvisible(c)) + unban(c); + else + ban(c); + layouts[ltidx].arrange(); + focus(NULL); + restack(); +} + +static void +attach(Client *c) { + if(clients) + clients->prev = c; + c->next = clients; + clients = c; +} + +static void +detach(Client *c) { + if(c->prev) + c->prev->next = c->next; + if(c->next) + c->next->prev = c->prev; + if(c == clients) + clients = c->next; + c->next = c->prev = NULL; +} + +static void +focus(Client *c) { + if((!c && selscreen) || (c && !isvisible(c))) + for(c = stack; c && !isvisible(c); c = c->snext); + if(sel && sel != c) { + grabbuttons(sel, False); + XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]); + } + if(c) { + detachstack(c); + attachstack(c); + grabbuttons(c, True); + } + sel = c; + drawbar(); + if(!selscreen) + return; + if(c) { + XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]); + XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime); + } + else + XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime); +} + +static Bool +isarrange(void (*func)()) +{ + return func == layouts[ltidx].arrange; +} + +static Client * +nexttiled(Client *c) { + for(; c && (c->isfloating || !isvisible(c)); c = c->next); + return c; +} + +static void +setmwfact(const char *arg) { + double delta; + + if(!isarrange(tile)) + return; + /* arg handling, manipulate mwfact */ + if(arg == NULL) + mwfact = MWFACT; + else if(1 == sscanf(arg, "%lf", &delta)) { + if(arg[0] != '+' && arg[0] != '-') + mwfact = delta; + else + mwfact += delta; + if(mwfact < 0.1) + mwfact = 0.1; + else if(mwfact > 0.9) + mwfact = 0.9; + } + arrange(); +} + +static void +tile(void) { + unsigned int i, n, nx, ny, nw, nh, mw, th; + Client *c; + + for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next)) + n++; + + /* window geoms */ + mw = (n == 1) ? waw : mwfact * waw; + th = (n > 1) ? wah / (n - 1) : 0; + if(n > 1 && th < bh) + th = wah; + + nx = wax; + ny = way; + for(i = 0, c = nexttiled(clients); c; c = nexttiled(c->next), i++) { + c->ismax = False; + if(i == 0) { /* master */ + nw = mw - 2 * c->border; + nh = wah - 2 * c->border; + } + else { /* tile window */ + if(i == 1) { + ny = way; + nx += mw; + } + nw = waw - mw - 2 * c->border; + if(i + 1 == n) /* remainder */ + nh = (way + wah) - ny - 2 * c->border; + else + nh = th - 2 * c->border; + } + resize(c, nx, ny, nw, nh, RESIZEHINTS); + if(n > 1 && th != wah) + ny += nh + 2 * c->border; + } +} + +static void +zoom(const char *arg) { + Client *c; + + if(!sel || !isarrange(tile) || sel->isfloating) + return; + if((c = sel) == nexttiled(clients)) + if(!(c = nexttiled(c->next))) + return; + detach(c); + attach(c); + focus(c); + arrange(); +} + +int +main(int argc, char *argv[]) { + char *p; + int r, xfd; + fd_set rd; + XEvent ev; + + if(argc == 2 && !strcmp("-v", argv[1])) + eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n"); + else if(argc != 1) + eprint("usage: dwm [-v]\n"); + setlocale(LC_CTYPE, ""); + if(!(dpy = XOpenDisplay(0))) + eprint("dwm: cannot open display\n"); + xfd = ConnectionNumber(dpy); + screen = DefaultScreen(dpy); + root = RootWindow(dpy, screen); + otherwm = False; + XSetErrorHandler(xerrorstart); + /* this causes an error if some other window manager is running */ + XSelectInput(dpy, root, SubstructureRedirectMask); + XSync(dpy, False); + if(otherwm) + eprint("dwm: another window manager is already running\n"); + + XSync(dpy, False); + XSetErrorHandler(NULL); + xerrorxlib = XSetErrorHandler(xerror); + XSync(dpy, False); + setup(); + drawbar(); + scan(); + + /* main event loop, also reads status text from stdin */ + XSync(dpy, False); + readin = True; + while(running) { + FD_ZERO(&rd); + if(readin) + FD_SET(STDIN_FILENO, &rd); + FD_SET(xfd, &rd); + if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) { + if(errno == EINTR) + continue; + eprint("select failed\n"); + } + if(FD_ISSET(STDIN_FILENO, &rd)) { + switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) { + case -1: + strncpy(stext, strerror(errno), sizeof stext - 1); + stext[sizeof stext - 1] = '\0'; + readin = False; + break; + case 0: + strncpy(stext, "EOF", 4); + readin = False; + break; + default: + for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0'); + for(; p >= stext && *p != '\n'; --p); + if(p > stext) + strncpy(stext, p + 1, sizeof stext); + } + drawbar(); + } + while(XPending(dpy)) { + XNextEvent(dpy, &ev); + if(handler[ev.type]) + (handler[ev.type])(&ev); /* call handler */ + } + } + cleanup(); + XCloseDisplay(dpy); + return 0; +} |