1 /* See LICENSE file for copyright and license details. */

     2 #include "dwm.h"

     3 #include <regex.h>

     4 #include <stdio.h>

     5 #include <stdlib.h>

     6 #include <string.h>

     7 #include <X11/Xatom.h>

     8 #include <X11/Xutil.h>

     9 

    10 /* static */

    11 

    12 typedef struct {

    13 	const char *symbol;

    14 	void (*arrange)(void);

    15 } Layout;

    16 

    17 typedef struct {

    18 	const char *prop;

    19 	const char *tags;

    20 	Bool isfloating;

    21 } Rule;

    22 

    23 typedef struct {

    24 	regex_t *propregex;

    25 	regex_t *tagregex;

    26 } Regs;

    27 

    28 TAGS

    29 RULES

    30 

    31 static char prop[512];

    32 static unsigned int nrules = 0;

    33 static unsigned int nlayouts = 0;

    34 static unsigned int ltidx = 0; /* default */

    35 static Regs *regs = NULL;

    36 

    37 static unsigned int

    38 idxoftag(const char *tag) {

    39 	unsigned int i;

    40 

    41 	for(i = 0; i < ntags; i++)

    42 		if(tags[i] == tag)

    43 			return i;

    44 	return 0;

    45 }

    46 

    47 static void

    48 floating(void) { /* default floating layout */

    49 	Client *c;

    50 

    51 	for(c = clients; c; c = c->next)

    52 		if(isvisible(c))

    53 			resize(c, c->x, c->y, c->w, c->h, True);

    54 }

    55 

    56 static void

    57 setdwmprops(void) {

    58 	unsigned int i;

    59 

    60 	for(i = 0; i < ntags && i < sizeof prop - 1; i++)

    61 		prop[i] = seltags[i] ? '1' : '0';

    62 	if(i < sizeof prop - 1)

    63 		prop[i++] = (char)ltidx;

    64 	prop[i] = '\0';

    65 	XChangeProperty(dpy, root, dwmprops, XA_STRING, 8,

    66 			PropModeReplace, (unsigned char *)prop, i);

    67 }

    68 

    69 LAYOUTS

    70 

    71 /* extern */

    72 

    73 unsigned int blw = 0;

    74 

    75 void

    76 applyrules(Client *c) {

    77 	unsigned int i, j;

    78 	regmatch_t tmp;

    79 	Bool matched = False;

    80 	XClassHint ch = { 0 };

    81 

    82 	/* rule matching */

    83 	XGetClassHint(dpy, c->win, &ch);

    84 	snprintf(prop, sizeof prop, "%s:%s:%s",

    85 			ch.res_class ? ch.res_class : "",

    86 			ch.res_name ? ch.res_name : "", c->name);

    87 	for(i = 0; i < nrules; i++)

    88 		if(regs[i].propregex && !regexec(regs[i].propregex, prop, 1, &tmp, 0)) {

    89 			c->isfloating = rules[i].isfloating;

    90 			for(j = 0; regs[i].tagregex && j < ntags; j++) {

    91 				if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {

    92 					matched = True;

    93 					c->tags[j] = True;

    94 				}

    95 			}

    96 		}

    97 	if(ch.res_class)

    98 		XFree(ch.res_class);

    99 	if(ch.res_name)

   100 		XFree(ch.res_name);

   101 	if(!matched)

   102 		for(i = 0; i < ntags; i++)

   103 			c->tags[i] = seltags[i];

   104 }

   105 

   106 void

   107 arrange(void) {

   108 	Client *c;

   109 

   110 	for(c = clients; c; c = c->next)

   111 		if(isvisible(c))

   112 			unban(c);

   113 		else

   114 			ban(c);

   115 	layouts[ltidx].arrange();

   116 	focus(NULL);

   117 	restack();

   118 }

   119 

   120 void

   121 compileregs(void) {

   122 	unsigned int i;

   123 	regex_t *reg;

   124 

   125 	if(regs)

   126 		return;

   127 	nrules = sizeof rules / sizeof rules[0];

   128 	regs = emallocz(nrules * sizeof(Regs));

   129 	for(i = 0; i < nrules; i++) {

   130 		if(rules[i].prop) {

   131 			reg = emallocz(sizeof(regex_t));

   132 			if(regcomp(reg, rules[i].prop, REG_EXTENDED))

   133 				free(reg);

   134 			else

   135 				regs[i].propregex = reg;

   136 		}

   137 		if(rules[i].tags) {

   138 			reg = emallocz(sizeof(regex_t));

   139 			if(regcomp(reg, rules[i].tags, REG_EXTENDED))

   140 				free(reg);

   141 			else

   142 				regs[i].tagregex = reg;

   143 		}

   144 	}

   145 }

   146 

   147 void

   148 focusnext(const char *arg) {

   149 	Client *c;

   150 

   151 	if(!sel)

   152 		return;

   153 	for(c = sel->next; c && !isvisible(c); c = c->next);

   154 	if(!c)

   155 		for(c = clients; c && !isvisible(c); c = c->next);

   156 	if(c) {

   157 		focus(c);

   158 		restack();

   159 	}

   160 }

   161 

   162 void

   163 focusprev(const char *arg) {

   164 	Client *c;

   165 

   166 	if(!sel)

   167 		return;

   168 	for(c = sel->prev; c && !isvisible(c); c = c->prev);

   169 	if(!c) {

   170 		for(c = clients; c && c->next; c = c->next);

   171 		for(; c && !isvisible(c); c = c->prev);

   172 	}

   173 	if(c) {

   174 		focus(c);

   175 		restack();

   176 	}

   177 }

   178 

   179 const char *

   180 getsymbol(void)

   181 {

   182 	return layouts[ltidx].symbol;

   183 }

   184 

   185 void

   186 initlayouts(void) {

   187 	unsigned int i, w;

   188 

   189 	nlayouts = sizeof layouts / sizeof layouts[0];

   190 	for(blw = i = 0; i < nlayouts; i++) {

   191 		w = textw(layouts[i].symbol);

   192 		if(w > blw)

   193 			blw = w;

   194 	}

   195 }

   196 

   197 Bool

   198 isfloating(void) {

   199 	return layouts[ltidx].arrange == floating;

   200 }

   201 

   202 Bool

   203 isarrange(void (*func)())

   204 {

   205 	return func == layouts[ltidx].arrange;

   206 }

   207 

   208 Bool

   209 isvisible(Client *c) {

   210 	unsigned int i;

   211 

   212 	for(i = 0; i < ntags; i++)

   213 		if(c->tags[i] && seltags[i])

   214 			return True;

   215 	return False;

   216 }

   217 

   218 void

   219 getdwmprops(void) {

   220 	unsigned int i;

   221 

   222 	if(gettextprop(root, dwmprops, prop, sizeof prop)) {

   223 		for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)

   224 			seltags[i] = prop[i] == '1';

   225 		if(i < sizeof prop - 1 && prop[i] != '\0') {

   226 			if(prop[i] < nlayouts)

   227 				ltidx = prop[i];

   228 		}

   229 	}

   230 }

   231 

   232 Client *

   233 nexttiled(Client *c) {

   234 	for(; c && (c->isfloating || !isvisible(c)); c = c->next);

   235 	return c;

   236 }

   237 

   238 void

   239 restack(void) {

   240 	Client *c;

   241 	XEvent ev;

   242 	XWindowChanges wc;

   243 

   244 	drawstatus();

   245 	if(!sel)

   246 		return;

   247 	if(sel->isfloating || isfloating())

   248 		XRaiseWindow(dpy, sel->win);

   249 	if(!isfloating()) {

   250 		wc.stack_mode = Below;

   251 		wc.sibling = barwin;

   252 		if(!sel->isfloating) {

   253 			XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);

   254 			wc.sibling = sel->win;

   255 		}

   256 		for(c = nexttiled(clients); c; c = nexttiled(c->next)) {

   257 			if(c == sel)

   258 				continue;

   259 			XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);

   260 			wc.sibling = c->win;

   261 		}

   262 	}

   263 	XSync(dpy, False);

   264 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));

   265 }

   266 

   267 void

   268 setlayout(const char *arg) {

   269 	int i;

   270 

   271 	if(!arg) {

   272 		if(++ltidx == nlayouts)

   273 			ltidx = 0;;

   274 	}

   275 	else {

   276 		i = atoi(arg);

   277 		if(i < 0 || i >= nlayouts)

   278 			return;

   279 		ltidx = i;

   280 	}

   281 	if(sel)

   282 		arrange();

   283 	else

   284 		drawstatus();

   285 	setdwmprops();

   286 }

   287 

   288 void

   289 tag(const char *arg) {

   290 	unsigned int i;

   291 

   292 	if(!sel)

   293 		return;

   294 	for(i = 0; i < ntags; i++)

   295 		sel->tags[i] = arg == NULL;

   296 	i = idxoftag(arg);

   297 	if(i >= 0 && i < ntags)

   298 		sel->tags[i] = True;

   299 	setprops(sel);

   300 	arrange();

   301 }

   302 

   303 void

   304 togglebar(const char *arg) {

   305 	if(bpos == BarOff)

   306 		bpos = (BARPOS == BarOff) ? BarTop : BARPOS;

   307 	else

   308 		bpos = BarOff;

   309 	updatebarpos();

   310 	arrange();

   311 }

   312 

   313 void

   314 togglefloating(const char *arg) {

   315 	if(!sel || isfloating())

   316 		return;

   317 	sel->isfloating = !sel->isfloating;

   318 	if(sel->isfloating) {

   319 		resize(sel, sel->x, sel->y, sel->w, sel->h, True);

   320 		setprops(sel);

   321 	}

   322 	arrange();

   323 }

   324 

   325 void

   326 togglemax(const char *arg) {

   327 	XEvent ev;

   328 

   329 	if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed)

   330 		return;

   331 	if((sel->ismax = !sel->ismax)) {

   332 		sel->rx = sel->x;

   333 		sel->ry = sel->y;

   334 		sel->rw = sel->w;

   335 		sel->rh = sel->h;

   336 		resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);

   337 	}

   338 	else

   339 		resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);

   340 	drawstatus();

   341 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));

   342 }

   343 

   344 void

   345 toggletag(const char *arg) {

   346 	unsigned int i, j;

   347 

   348 	if(!sel)

   349 		return;

   350 	i = idxoftag(arg);

   351 	sel->tags[i] = !sel->tags[i];

   352 	for(j = 0; j < ntags && !sel->tags[j]; j++);

   353 	if(j == ntags)

   354 		sel->tags[i] = True;

   355 	setprops(sel);

   356 	arrange();

   357 }

   358 

   359 void

   360 toggleview(const char *arg) {

   361 	unsigned int i, j;

   362 

   363 	i = idxoftag(arg);

   364 	seltags[i] = !seltags[i];

   365 	for(j = 0; j < ntags && !seltags[j]; j++);

   366 	if(j == ntags)

   367 		seltags[i] = True; /* cannot toggle last view */

   368 	setdwmprops();

   369 	arrange();

   370 }

   371 

   372 void

   373 view(const char *arg) {

   374 	unsigned int i;

   375 

   376 	for(i = 0; i < ntags; i++)

   377 		seltags[i] = arg == NULL;

   378 	i = idxoftag(arg);

   379 	if(i >= 0 && i < ntags)

   380 		seltags[i] = True;

   381 	setdwmprops();

   382 	arrange();

   383 }