Add Aero transparency and dynamic tags

1 files changed, 162 insertions, 34 deletions

diff --git a/dwm/dwm.c b/dwm/dwm.c
index 4cf07eb..21f352e 100644
--- a/dwm/dwm.c
+++ b/dwm/dwm.c
@@ -30,6 +30,11 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <stdint.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/select.h>
 #include <X11/cursorfont.h>
 #include <X11/keysym.h>
 #include <X11/Xatom.h>
@@ -118,6 +123,7 @@ struct Monitor {
 	int by;               /* bar geometry */
 	int mx, my, mw, mh;   /* screen size */
 	int wx, wy, ww, wh;   /* window area  */
+	int gappx;            /* gaps between windows */
 	unsigned int seltags;
 	unsigned int sellt;
 	unsigned int tagset[2];
@@ -199,9 +205,13 @@ static void sendmon(Client *c, Monitor *m);
 static void setclientstate(Client *c, long state);
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
+static void setgaps(const Arg *arg);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
+static void setopacity(Window w, double opacity);
 static void setup(void);
+static void initaccent(void);
+static void updateaccent(void);
 static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
 static void spawn(const Arg *arg);
@@ -210,6 +220,7 @@ static void tagmon(const Arg *arg);
 static void tile(Monitor *m);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
+static void togglescratch(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
 static void unfocus(Client *c, int setfocus);
@@ -270,6 +281,19 @@ static Window root, wmcheckwin;
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
+static unsigned int scratchtag = 1 << LENGTH(tags);
+
+#define SHMNAME "/breathing_color_shm"
+typedef struct {
+    uint32_t magic;
+    uint32_t version;
+    volatile uint32_t seq;
+    char color[8];
+} ColorShm;
+
+static ColorShm *accentshm;
+static char accentcol[8] = "#005577";
+
 /* compile-time check if all tags fit into an unsigned int bit array. */
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
@@ -640,12 +664,46 @@ createmon(void)
 	m->nmaster = nmaster;
 	m->showbar = showbar;
 	m->topbar = topbar;
+	m->gappx = gappx;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
 	return m;
 }
 
+static void
+updateaccent(void) {
+    if (!accentshm)
+        return;
+    uint32_t s1, s2;
+    char tmp[8];
+    do {
+        s1 = accentshm->seq;
+        memcpy(tmp, accentshm->color, 8);
+        s2 = accentshm->seq;
+    } while (s1 != s2);
+    if (tmp[0] != '#')
+        return;
+    memcpy(accentcol, tmp, 8);
+    drw_clr_create(drw, &scheme[SchemeSel][ColBg], accentcol);
+    drw_clr_create(drw, &scheme[SchemeSel][ColBorder], accentcol);
+    for (Monitor *m = mons; m; m = m->next)
+        if (m->sel)
+            XSetWindowBorder(dpy, m->sel->win, scheme[SchemeSel][ColBorder].pixel);
+}
+
+static void
+initaccent(void) {
+    int fd = shm_open(SHMNAME, O_RDONLY, 0);
+    if (fd >= 0) {
+        accentshm = mmap(NULL, sizeof(ColorShm), PROT_READ, MAP_SHARED, fd, 0);
+        close(fd);
+        if (accentshm == MAP_FAILED)
+            accentshm = NULL;
+    }
+    updateaccent();
+}
+
 void
 destroynotify(XEvent *e)
 {
@@ -697,7 +755,7 @@ dirtomon(int dir)
 void
 drawbar(Monitor *m)
 {
-	int x, w, tw = 0;
+        int x, w, tw = 0;
 	int boxs = drw->fonts->h / 9;
 	int boxw = drw->fonts->h / 6 + 2;
 	unsigned int i, occ = 0, urg = 0;
@@ -719,16 +777,18 @@ drawbar(Monitor *m)
 			urg |= c->tags;
 	}
 	x = 0;
-	for (i = 0; i < LENGTH(tags); i++) {
-		w = TEXTW(tags[i]);
-		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
-		drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
-		if (occ & 1 << i)
-			drw_rect(drw, x + boxs, boxs, boxw, boxw,
-				m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
-				urg & 1 << i);
-		x += w;
-	}
+       for (i = 0; i < LENGTH(tags); i++) {
+               if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+                       continue;
+               w = TEXTW(tags[i]);
+               drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
+               drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
+               if (occ & 1 << i)
+                       drw_rect(drw, x + boxs, boxs, boxw, boxw,
+                               m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
+                               urg & 1 << i);
+               x += w;
+       }
 	w = TEXTW(m->ltsymbol);
 	drw_setscheme(drw, scheme[SchemeNorm]);
 	x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
@@ -750,10 +810,11 @@ drawbar(Monitor *m)
 void
 drawbars(void)
 {
-	Monitor *m;
+        Monitor *m;
 
-	for (m = mons; m; m = m->next)
-		drawbar(m);
+        updateaccent();
+        for (m = mons; m; m = m->next)
+                drawbar(m);
 }
 
 void
@@ -1060,6 +1121,14 @@ manage(Window w, XWindowAttributes *wa)
 	c->y = MAX(c->y, c->mon->wy);
 	c->bw = borderpx;
 
+	selmon->tagset[selmon->seltags] &= ~scratchtag;
+	if (!strcmp(c->name, scratchpadname)) {
+		c->mon->tagset[c->mon->seltags] |= c->tags = scratchtag;
+		c->isfloating = True;
+		c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
+		c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
+	}
+
 	wc.border_width = c->bw;
 	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
 	XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
@@ -1381,12 +1450,27 @@ restack(Monitor *m)
 void
 run(void)
 {
-	XEvent ev;
-	/* main event loop */
-	XSync(dpy, False);
-	while (running && !XNextEvent(dpy, &ev))
-		if (handler[ev.type])
-			handler[ev.type](&ev); /* call handler */
+        XEvent ev;
+        int xfd;
+        fd_set fds;
+        struct timeval tv;
+
+        XSync(dpy, False);
+        xfd = ConnectionNumber(dpy);
+        while (running) {
+                FD_ZERO(&fds);
+                FD_SET(xfd, &fds);
+                tv.tv_sec = 0;
+                tv.tv_usec = 50000;
+                if (select(xfd + 1, &fds, NULL, NULL, &tv) > 0) {
+                        while (XPending(dpy)) {
+                                XNextEvent(dpy, &ev);
+                                if (handler[ev.type])
+                                        handler[ev.type](&ev); /* call handler */
+                        }
+                }
+                drawbars();
+        }
 }
 
 void
@@ -1507,6 +1591,16 @@ setfullscreen(Client *c, int fullscreen)
 }
 
 void
+setgaps(const Arg *arg)
+{
+	if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
+		selmon->gappx = 0;
+	else
+		selmon->gappx += arg->i;
+	arrange(selmon);
+}
+
+void
 setlayout(const Arg *arg)
 {
 	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
@@ -1535,6 +1629,15 @@ setmfact(const Arg *arg)
 	arrange(selmon);
 }
 
+static void
+setopacity(Window w, double opacity)
+{
+        unsigned long val = opacity * 0xffffffff;
+        XChangeProperty(dpy, w, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
+                        XA_CARDINAL, 32, PropModeReplace,
+                        (unsigned char *)&val, 1);
+}
+
 void
 setup(void)
 {
@@ -1586,6 +1689,7 @@ setup(void)
 	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
 	for (i = 0; i < LENGTH(colors); i++)
 		scheme[i] = drw_scm_create(drw, colors[i], 3);
+        initaccent();
 	/* init bars */
 	updatebars();
 	updatestatus();
@@ -1650,6 +1754,7 @@ spawn(const Arg *arg)
 
 	if (arg->v == dmenucmd)
 		dmenumon[0] = '0' + selmon->num;
+	selmon->tagset[selmon->seltags] &= ~scratchtag;
 	if (fork() == 0) {
 		if (dpy)
 			close(ConnectionNumber(dpy));
@@ -1696,18 +1801,18 @@ tile(Monitor *m)
 	if (n > m->nmaster)
 		mw = m->nmaster ? m->ww * m->mfact : 0;
 	else
-		mw = m->ww;
-	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
-		if (i < m->nmaster) {
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
-			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
-			if (my + HEIGHT(c) < m->wh)
-				my += HEIGHT(c);
+		mw = m->ww - m->gappx;
+	for (i = 0, my = ty = m->gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+			if (i < m->nmaster) {
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - m->gappx;
+			resize(c, m->wx + m->gappx, m->wy + my, mw - (2*c->bw) - m->gappx, h - (2*c->bw), 0);
+			if (my + HEIGHT(c) + m->gappx < m->wh)
+				my += HEIGHT(c) + m->gappx;
 		} else {
-			h = (m->wh - ty) / (n - i);
-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
-			if (ty + HEIGHT(c) < m->wh)
-				ty += HEIGHT(c);
+			h = (m->wh - ty) / (n - i) - m->gappx;
+			resize(c, m->wx + mw + m->gappx, m->wy + ty, m->ww - mw - (2*c->bw) - 2*m->gappx, h - (2*c->bw), 0);
+			if (ty + HEIGHT(c) + m->gappx < m->wh)
+				ty += HEIGHT(c) + m->gappx;
 		}
 }
 
@@ -1735,6 +1840,28 @@ togglefloating(const Arg *arg)
 }
 
 void
+togglescratch(const Arg *arg)
+{
+	Client *c;
+	unsigned int found = 0;
+
+	for (c = selmon->clients; c && !(found = c->tags & scratchtag); c = c->next);
+	if (found) {
+		unsigned int newtagset = selmon->tagset[selmon->seltags] ^ scratchtag;
+		if (newtagset) {
+			selmon->tagset[selmon->seltags] = newtagset;
+			focus(NULL);
+			arrange(selmon);
+		}
+		if (ISVISIBLE(c)) {
+			focus(c);
+			restack(selmon);
+		}
+	} else
+		spawn(arg);
+}
+
+void
 toggletag(const Arg *arg)
 {
 	unsigned int newtags;
@@ -1831,9 +1958,10 @@ updatebars(void)
 				CopyFromParent, DefaultVisual(dpy, screen),
 				CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
 		XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
-		XMapRaised(dpy, m->barwin);
-		XSetClassHint(dpy, m->barwin, &ch);
-	}
+               XMapRaised(dpy, m->barwin);
+               setopacity(m->barwin, baropacity);
+               XSetClassHint(dpy, m->barwin, &ch);
+       }
 }
 
 void