added screen.c, removed layout.c and tag.c

1 files changed, 383 insertions, 0 deletions

diff --git a/screen.c b/screen.c
new file mode 100644
index 00000000..03387eb9
--- /dev/null
+++ b/screen.c
@@ -0,0 +1,383 @@
+/* See LICENSE file for copyright and license details. */
+#include "dwm.h"
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <X11/Xatom.h>
+#include <X11/Xutil.h>
+
+/* static */
+
+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;
+
+TAGS
+RULES
+
+static char prop[512];
+static unsigned int nrules = 0;
+static unsigned int nlayouts = 0;
+static unsigned int ltidx = 0; /* default */
+static Regs *regs = NULL;
+
+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
+setdwmprops(void) {
+	unsigned int i;
+
+	for(i = 0; i < ntags && i < sizeof prop - 1; i++)
+		prop[i] = seltags[i] ? '1' : '0';
+	if(i < sizeof prop - 1)
+		prop[i++] = (char)ltidx;
+	prop[i] = '\0';
+	XChangeProperty(dpy, root, dwmprops, XA_STRING, 8,
+			PropModeReplace, (unsigned char *)prop, i);
+}
+
+LAYOUTS
+
+/* extern */
+
+unsigned int blw = 0;
+
+void
+applyrules(Client *c) {
+	unsigned int i, j;
+	regmatch_t tmp;
+	Bool matched = False;
+	XClassHint ch = { 0 };
+
+	/* rule matching */
+	XGetClassHint(dpy, c->win, &ch);
+	snprintf(prop, sizeof prop, "%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, prop, 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];
+}
+
+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();
+}
+
+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;
+		}
+	}
+}
+
+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();
+	}
+}
+
+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();
+	}
+}
+
+const char *
+getsymbol(void)
+{
+	return layouts[ltidx].symbol;
+}
+
+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;
+	}
+}
+
+Bool
+isfloating(void) {
+	return layouts[ltidx].arrange == floating;
+}
+
+Bool
+isarrange(void (*func)())
+{
+	return func == layouts[ltidx].arrange;
+}
+
+Bool
+isvisible(Client *c) {
+	unsigned int i;
+
+	for(i = 0; i < ntags; i++)
+		if(c->tags[i] && seltags[i])
+			return True;
+	return False;
+}
+
+void
+getdwmprops(void) {
+	unsigned int i;
+
+	if(gettextprop(root, dwmprops, prop, sizeof prop)) {
+		for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
+			seltags[i] = prop[i] == '1';
+		if(i < sizeof prop - 1 && prop[i] != '\0') {
+			if(prop[i] < nlayouts)
+				ltidx = prop[i];
+		}
+	}
+}
+
+Client *
+nexttiled(Client *c) {
+	for(; c && (c->isfloating || !isvisible(c)); c = c->next);
+	return c;
+}
+
+void
+restack(void) {
+	Client *c;
+	XEvent ev;
+	XWindowChanges wc;
+
+	drawstatus();
+	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));
+}
+
+void
+setlayout(const char *arg) {
+	int i;
+
+	if(!arg) {
+		if(++ltidx == nlayouts)
+			ltidx = 0;;
+	}
+	else {
+		i = atoi(arg);
+		if(i < 0 || i >= nlayouts)
+			return;
+		ltidx = i;
+	}
+	if(sel)
+		arrange();
+	else
+		drawstatus();
+	setdwmprops();
+}
+
+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;
+	setprops(sel);
+	arrange();
+}
+
+void
+togglebar(const char *arg) {
+	if(bpos == BarOff)
+		bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
+	else
+		bpos = BarOff;
+	updatebarpos();
+	arrange();
+}
+
+void
+togglefloating(const char *arg) {
+	if(!sel || isfloating())
+		return;
+	sel->isfloating = !sel->isfloating;
+	if(sel->isfloating) {
+		resize(sel, sel->x, sel->y, sel->w, sel->h, True);
+		setprops(sel);
+	}
+	arrange();
+}
+
+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);
+	drawstatus();
+	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+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;
+	setprops(sel);
+	arrange();
+}
+
+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 */
+	setdwmprops();
+	arrange();
+}
+
+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;
+	setdwmprops();
+	arrange();
+}