proceeded with cleaning up, sorting functions, etc

client.c

@@ -2,21 +2,14 @@
  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
 #include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
-#include "dwm.h"
-
-void
-ban(Client *c)
-{
-	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-	XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
-}
+/* static functions */
 
 static void
 resizetitle(Client *c)
@@ -35,70 +28,141 @@ resizetitle(Client *c)
 	XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
 }
 
+static int
+xerrordummy(Display *dsply, XErrorEvent *ee)
+{
+	return 0;
+}
+
+/* extern functions */
+
 void
-settitle(Client *c)
+ban(Client *c)
 {
-	XTextProperty name;
-	int n;
-	char **list = NULL;
+	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+	XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
+}
 
-	name.nitems = 0;
-	c->name[0] = 0;
-	XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
-	if(!name.nitems)
-		XGetWMName(dpy, c->win, &name);
-	if(!name.nitems)
+void
+focus(Client *c)
+{
+	Client *old = sel;
+	XEvent ev;
+
+	XFlush(dpy);
+	sel = c;
+	if(old && old != c)
+		drawtitle(old);
+	drawtitle(c);
+	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+	XFlush(dpy);
+	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+void
+focusnext(Arg *arg)
+{
+	Client *c;
+   
+	if(!sel)
 		return;
-	if(name.encoding == XA_STRING)
-		strncpy(c->name, (char *)name.value, sizeof(c->name));
-	else {
-		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
-				&& n > 0 && *list)
-		{
-			strncpy(c->name, *list, sizeof(c->name));
-			XFreeStringList(list);
-		}
+
+	if(!(c = getnext(sel->next)))
+		c = getnext(clients);
+	if(c) {
+		higher(c);
+		c->revert = sel;
+		focus(c);
 	}
-	XFree(name.value);
-	resizetitle(c);
 }
 
 void
-setsize(Client *c)
+focusprev(Arg *arg)
 {
-	XSizeHints size;
-	long msize;
-	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;
+	Client *c;
+
+	if(!sel)
+		return;
+
+	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
+		higher(c);
+		focus(c);
 	}
-	else
-		c->basew = c->baseh = 0;
-	if(c->flags & PResizeInc) {
-		c->incw = size.width_inc;
-		c->inch = size.height_inc;
+}
+
+Client *
+getclient(Window w)
+{
+	Client *c;
+	for(c = clients; c; c = c->next)
+		if(c->win == w)
+			return c;
+	return NULL;
+}
+
+Client *
+getctitle(Window w)
+{
+	Client *c;
+	for(c = clients; c; c = c->next)
+		if(c->title == w)
+			return c;
+	return NULL;
+}
+
+void
+gravitate(Client *c, Bool invert)
+{
+	int dx = 0, dy = 0;
+
+	switch(c->grav) {
+	case StaticGravity:
+	case NorthWestGravity:
+	case NorthGravity:
+	case NorthEastGravity:
+		dy = c->border;
+		break;
+	case EastGravity:
+	case CenterGravity:
+	case WestGravity:
+		dy = -(c->h / 2) + c->border;
+		break;
+	case SouthEastGravity:
+	case SouthGravity:
+	case SouthWestGravity:
+		dy = -c->h;
+		break;
+	default:
+		break;
 	}
-	else
-		c->incw = c->inch = 0;
-	if(c->flags & PMaxSize) {
-		c->maxw = size.max_width;
-		c->maxh = size.max_height;
+
+	switch (c->grav) {
+	case StaticGravity:
+	case NorthWestGravity:
+	case WestGravity:
+	case SouthWestGravity:
+		dx = c->border;
+		break;
+	case NorthGravity:
+	case CenterGravity:
+	case SouthGravity:
+		dx = -(c->w / 2) + c->border;
+		break;
+	case NorthEastGravity:
+	case EastGravity:
+	case SouthEastGravity:
+		dx = -(c->w + c->border);
+		break;
+	default:
+		break;
 	}
-	else
-		c->maxw = c->maxh = 0;
-	if(c->flags & PMinSize) {
-		c->minw = size.min_width;
-		c->minh = size.min_height;
+
+	if(invert) {
+		dx = -dx;
+		dy = -dy;
 	}
-	else
-		c->minw = c->minh = 0;
-	if(c->flags & PWinGravity)
-		c->grav = size.win_gravity;
-	else
-		c->grav = NorthWestGravity;
+	c->x += dx;
+	c->y += dy;
 }
 
 void
@@ -109,26 +173,21 @@ higher(Client *c)
 }
 
 void
-lower(Client *c)
+killclient(Arg *arg)
 {
-	XLowerWindow(dpy, c->title);
-	XLowerWindow(dpy, c->win);
+	if(!sel)
+		return;
+	if(sel->proto & WM_PROTOCOL_DELWIN)
+		sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
+	else
+		XKillClient(dpy, sel->win);
 }
 
 void
-focus(Client *c)
+lower(Client *c)
 {
-	Client *old = sel;
-	XEvent ev;
-
-	XFlush(dpy);
-	sel = c;
-	if(old && old != c)
-		drawtitle(old);
-	drawtitle(c);
-	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
-	XFlush(dpy);
-	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+	XLowerWindow(dpy, c->title);
+	XLowerWindow(dpy, c->win);
 }
 
 void
@@ -195,61 +254,18 @@ manage(Window w, XWindowAttributes *wa)
 }
 
 void
-gravitate(Client *c, Bool invert)
+maximize(Arg *arg)
 {
-	int dx = 0, dy = 0;
-
-	switch(c->grav) {
-	case StaticGravity:
-	case NorthWestGravity:
-	case NorthGravity:
-	case NorthEastGravity:
-		dy = c->border;
-		break;
-	case EastGravity:
-	case CenterGravity:
-	case WestGravity:
-		dy = -(c->h / 2) + c->border;
-		break;
-	case SouthEastGravity:
-	case SouthGravity:
-	case SouthWestGravity:
-		dy = -c->h;
-		break;
-	default:
-		break;
-	}
-
-	switch (c->grav) {
-	case StaticGravity:
-	case NorthWestGravity:
-	case WestGravity:
-	case SouthWestGravity:
-		dx = c->border;
-		break;
-	case NorthGravity:
-	case CenterGravity:
-	case SouthGravity:
-		dx = -(c->w / 2) + c->border;
-		break;
-	case NorthEastGravity:
-	case EastGravity:
-	case SouthEastGravity:
-		dx = -(c->w + c->border);
-		break;
-	default:
-		break;
-	}
-
-	if(invert) {
-		dx = -dx;
-		dy = -dy;
-	}
-	c->x += dx;
-	c->y += dy;
+	if(!sel)
+		return;
+	sel->x = sx;
+	sel->y = sy + bh;
+	sel->w = sw - 2 * sel->border;
+	sel->h = sh - 2 * sel->border - bh;
+	higher(sel);
+	resize(sel, False);
 }
 
-
 void
 resize(Client *c, Bool inc)
 {
@@ -290,10 +306,70 @@ resize(Client *c, Bool inc)
 	XFlush(dpy);
 }
 
-static int
-xerrordummy(Display *dsply, XErrorEvent *ee)
+void
+setsize(Client *c)
 {
-	return 0;
+	XSizeHints size;
+	long msize;
+	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
+		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
+		c->minw = c->minh = 0;
+	if(c->flags & PWinGravity)
+		c->grav = size.win_gravity;
+	else
+		c->grav = NorthWestGravity;
+}
+
+void
+settitle(Client *c)
+{
+	XTextProperty name;
+	int n;
+	char **list = NULL;
+
+	name.nitems = 0;
+	c->name[0] = 0;
+	XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
+	if(!name.nitems)
+		XGetWMName(dpy, c->win, &name);
+	if(!name.nitems)
+		return;
+	if(name.encoding == XA_STRING)
+		strncpy(c->name, (char *)name.value, sizeof(c->name));
+	else {
+		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
+				&& n > 0 && *list)
+		{
+			strncpy(c->name, *list, sizeof(c->name));
+			XFreeStringList(list);
+		}
+	}
+	XFree(name.value);
+	resizetitle(c);
 }
 
 void
@@ -325,26 +401,6 @@ unmanage(Client *c)
 		focus(sel);
 }
 
-Client *
-getctitle(Window w)
-{
-	Client *c;
-	for(c = clients; c; c = c->next)
-		if(c->title == w)
-			return c;
-	return NULL;
-}
-
-Client *
-getclient(Window w)
-{
-	Client *c;
-	for(c = clients; c; c = c->next)
-		if(c->win == w)
-			return c;
-	return NULL;
-}
-
 void
 zoom(Arg *arg)
 {
@@ -366,58 +422,3 @@ zoom(Arg *arg)
 	arrange(NULL);
 	focus(sel);
 }
-
-void
-maximize(Arg *arg)
-{
-	if(!sel)
-		return;
-	sel->x = sx;
-	sel->y = sy + bh;
-	sel->w = sw - 2 * sel->border;
-	sel->h = sh - 2 * sel->border - bh;
-	higher(sel);
-	resize(sel, False);
-}
-
-void
-focusprev(Arg *arg)
-{
-	Client *c;
-
-	if(!sel)
-		return;
-
-	if((c = sel->revert && sel->revert->tags[tsel] ? sel->revert : NULL)) {
-		higher(c);
-		focus(c);
-	}
-}
-
-void
-focusnext(Arg *arg)
-{
-	Client *c;
-   
-	if(!sel)
-		return;
-
-	if(!(c = getnext(sel->next)))
-		c = getnext(clients);
-	if(c) {
-		higher(c);
-		c->revert = sel;
-		focus(c);
-	}
-}
-
-void
-killclient(Arg *arg)
-{
-	if(!sel)
-		return;
-	if(sel->proto & WM_PROTOCOL_DELWIN)
-		sendevent(sel->win, wm_atom[WMProtocols], wm_atom[WMDelete]);
-	else
-		XKillClient(dpy, sel->win);
-}

draw.c

@@ -2,13 +2,34 @@
  * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
 #include <stdio.h>
 #include <string.h>
-
 #include <X11/Xlocale.h>
 
-#include "dwm.h"
+/* static functions */
+
+static void
+drawborder(void)
+{
+	XPoint points[5];
+	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
+	XSetForeground(dpy, dc.gc, dc.border);
+	points[0].x = dc.x;
+	points[0].y = dc.y;
+	points[1].x = dc.w - 1;
+	points[1].y = 0;
+	points[2].x = 0;
+	points[2].y = dc.h - 1;
+	points[3].x = -(dc.w - 1);
+	points[3].y = 0;
+	points[4].x = 0;
+	points[4].y = -(dc.h - 1);
+	XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
+}
+
+/* extern functions */
 
 void
 drawall()
@@ -52,59 +73,6 @@ drawstatus()
 	XFlush(dpy);
 }
 
-void
-drawtitle(Client *c)
-{
-	int i;
-	Bool istile = arrange == dotile;
-
-	if(c == sel) {
-		drawstatus();
-		XUnmapWindow(dpy, c->title);
-		XSetWindowBorder(dpy, c->win, dc.fg);
-		return;
-	}
-
-	XSetWindowBorder(dpy, c->win, dc.bg);
-	XMapWindow(dpy, c->title);
-
-	dc.x = dc.y = 0;
-
-	dc.w = 0;
-	for(i = 0; i < TLast; i++) {
-		if(c->tags[i]) {
-			dc.x += dc.w;
-			dc.w = textw(c->tags[i]);
-			drawtext(c->tags[i], !istile, True);
-		}
-	}
-	dc.x += dc.w;
-	dc.w = textw(c->name);
-	drawtext(c->name, !istile, True);
-	XCopyArea(dpy, dc.drawable, c->title, dc.gc,
-			0, 0, c->tw, c->th, 0, 0);
-	XFlush(dpy);
-}
-
-static void
-drawborder(void)
-{
-	XPoint points[5];
-	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
-	XSetForeground(dpy, dc.gc, dc.border);
-	points[0].x = dc.x;
-	points[0].y = dc.y;
-	points[1].x = dc.w - 1;
-	points[1].y = 0;
-	points[2].x = 0;
-	points[2].y = dc.h - 1;
-	points[3].x = -(dc.w - 1);
-	points[3].y = 0;
-	points[4].x = 0;
-	points[4].y = -(dc.h - 1);
-	XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
-}
-
 void
 drawtext(const char *text, Bool invert, Bool border)
 {
@@ -155,6 +123,40 @@ drawtext(const char *text, Bool invert, Bool border)
 	}
 }
 
+void
+drawtitle(Client *c)
+{
+	int i;
+	Bool istile = arrange == dotile;
+
+	if(c == sel) {
+		drawstatus();
+		XUnmapWindow(dpy, c->title);
+		XSetWindowBorder(dpy, c->win, dc.fg);
+		return;
+	}
+
+	XSetWindowBorder(dpy, c->win, dc.bg);
+	XMapWindow(dpy, c->title);
+
+	dc.x = dc.y = 0;
+
+	dc.w = 0;
+	for(i = 0; i < TLast; i++) {
+		if(c->tags[i]) {
+			dc.x += dc.w;
+			dc.w = textw(c->tags[i]);
+			drawtext(c->tags[i], !istile, True);
+		}
+	}
+	dc.x += dc.w;
+	dc.w = textw(c->name);
+	drawtext(c->name, !istile, True);
+	XCopyArea(dpy, dc.drawable, c->title, dc.gc,
+			0, 0, c->tw, c->th, 0, 0);
+	XFlush(dpy);
+}
+
 unsigned long
 getcolor(const char *colstr)
 {
@@ -165,23 +167,6 @@ getcolor(const char *colstr)
 	return color.pixel;
 }
 
-unsigned int
-textnw(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);
-}
-
-unsigned int
-textw(char *text)
-{
-	return textnw(text, strlen(text)) + dc.font.height;
-}
-
 void
 setfont(const char *fontstr)
 {
@@ -232,3 +217,20 @@ setfont(const char *fontstr)
 	}
 	dc.font.height = dc.font.ascent + dc.font.descent;
 }
+
+unsigned int
+textnw(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);
+}
+
+unsigned int
+textw(char *text)
+{
+	return textnw(text, strlen(text)) + dc.font.height;
+}

dwm.h

@@ -104,53 +104,52 @@ extern Client *clients, *sel;
 
 /* client.c */
 extern void ban(Client *c);
-extern void manage(Window w, XWindowAttributes *wa);
-extern void unmanage(Client *c);
-extern Client *getclient(Window w);
 extern void focus(Client *c);
-extern void settitle(Client *c);
-extern void resize(Client *c, Bool inc);
-extern void setsize(Client *c);
+extern void focusnext(Arg *arg);
+extern void focusprev(Arg *arg);
+extern Client *getclient(Window w);
 extern Client *getctitle(Window w);
+extern void gravitate(Client *c, Bool invert);
 extern void higher(Client *c);
+extern void killclient(Arg *arg);
 extern void lower(Client *c);
-extern void gravitate(Client *c, Bool invert);
-extern void zoom(Arg *arg);
+extern void manage(Window w, XWindowAttributes *wa);
 extern void maximize(Arg *arg);
-extern void focusprev(Arg *arg);
-extern void focusnext(Arg *arg);
-extern void killclient(Arg *arg);
+extern void resize(Client *c, Bool inc);
+extern void setsize(Client *c);
+extern void settitle(Client *c);
+extern void unmanage(Client *c);
+extern void zoom(Arg *arg);
 
 /* draw.c */
 extern void drawall();
 extern void drawstatus();
-extern void drawtitle(Client *c);
 extern void drawtext(const char *text, Bool invert, Bool border);
+extern void drawtitle(Client *c);
 extern unsigned long getcolor(const char *colstr);
 extern void setfont(const char *fontstr);
 extern unsigned int textnw(char *text, unsigned int len);
 extern unsigned int textw(char *text);
-extern unsigned int texth(void);
 
 /* event.c */
 extern void grabkeys();
 
 /* main.c */
+extern int getproto(Window w);
 extern void quit(Arg *arg);
-extern int xerror(Display *dsply, XErrorEvent *ee);
 extern void sendevent(Window w, Atom a, long value);
-extern int getproto(Window w);
+extern int xerror(Display *dsply, XErrorEvent *ee);
 
 /* tag.c */
-extern Client *getnext(Client *c);
-extern void settags(Client *c);
+extern void appendtag(Arg *arg);
 extern void dofloat(Arg *arg);
 extern void dotile(Arg *arg);
-extern void view(Arg *arg);
-extern void appendtag(Arg *arg);
+extern Client *getnext(Client *c);
 extern void replacetag(Arg *arg);
+extern void settags(Client *c);
+extern void view(Arg *arg);
 
 /* util.c */
-extern void eprint(const char *errstr, ...);
 extern void *emallocz(unsigned int size);
+extern void eprint(const char *errstr, ...);
 extern void spawn(Arg *arg);

event.c

@@ -2,17 +2,12 @@
  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
-#include <fcntl.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
 #include <X11/keysym.h>
 #include <X11/Xatom.h>
 
-#include "dwm.h"
-
 #define ButtonMask      (ButtonPressMask | ButtonReleaseMask)
 #define MouseMask       (ButtonMask | PointerMotionMask)
 
@@ -54,130 +49,10 @@ Key key[] = {
 
 /********** CUSTOMIZE **********/
 
-/* local functions */
-static void buttonpress(XEvent *e);
-static void configurerequest(XEvent *e);
-static void destroynotify(XEvent *e);
-static void enternotify(XEvent *e);
-static void leavenotify(XEvent *e);
-static void expose(XEvent *e);
-static void keypress(XEvent *e);
-static void maprequest(XEvent *e);
-static void propertynotify(XEvent *e);
-static void unmapnotify(XEvent *e);
-
-void (*handler[LASTEvent]) (XEvent *) = {
-	[ButtonPress] = buttonpress,
-	[ConfigureRequest] = configurerequest,
-	[DestroyNotify] = destroynotify,
-	[EnterNotify] = enternotify,
-	[LeaveNotify] = leavenotify,
-	[Expose] = expose,
-	[KeyPress] = keypress,
-	[MapRequest] = maprequest,
-	[PropertyNotify] = propertynotify,
-	[UnmapNotify] = unmapnotify
-};
-
-void
-grabkeys()
-{
-	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
-	unsigned int i;
-	KeyCode code;
-
-	for(i = 0; i < len; i++) {
-		code = XKeysymToKeycode(dpy, key[i].keysym);
-		XUngrabKey(dpy, code, key[i].mod, root);
-		XGrabKey(dpy, code, key[i].mod, root, True,
-				GrabModeAsync, GrabModeAsync);
-	}
-}
-
-static void
-keypress(XEvent *e)
-{
-	XKeyEvent *ev = &e->xkey;
-	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
-	unsigned int i;
-	KeySym keysym;
-
-	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
-	for(i = 0; i < len; i++)
-		if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
-			if(key[i].func)
-				key[i].func(&key[i].arg);
-			return;
-		}
-}
-
-static void
-resizemouse(Client *c)
-{
-	XEvent ev;
-	int ocx, ocy;
-
-	ocx = c->x;
-	ocy = c->y;
-	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
-				None, cursor[CurResize], CurrentTime) != GrabSuccess)
-		return;
-	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
-	for(;;) {
-		XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
-		switch(ev.type) {
-		default: break;
-		case Expose:
-			handler[Expose](&ev);
-			break;
-		case MotionNotify:
-			XFlush(dpy);
-			c->w = abs(ocx - ev.xmotion.x);
-			c->h = abs(ocy - ev.xmotion.y);
-			c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
-			c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
-			resize(c, True);
-			break;
-		case ButtonRelease:
-			XUngrabPointer(dpy, CurrentTime);
-			return;
-		}
-	}
-}
-
-static void
-movemouse(Client *c)
-{
-	XEvent ev;
-	int x1, y1, ocx, ocy, di;
-	unsigned int dui;
-	Window dummy;
+/* static functions */
 
-	ocx = c->x;
-	ocy = c->y;
-	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
-				None, cursor[CurMove], CurrentTime) != GrabSuccess)
-		return;
-	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
-	for(;;) {
-		XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
-		switch (ev.type) {
-		default: break;
-		case Expose:
-			handler[Expose](&ev);
-			break;
-		case MotionNotify:
-			XFlush(dpy);
-			c->x = ocx + (ev.xmotion.x - x1);
-			c->y = ocy + (ev.xmotion.y - y1);
-			resize(c, False);
-			break;
-		case ButtonRelease:
-			XUngrabPointer(dpy, CurrentTime);
-			return;
-		}
-	}
-}
+static void movemouse(Client *c);
+static void resizemouse(Client *c);
 
 static void
 buttonpress(XEvent *e)
@@ -279,15 +154,6 @@ enternotify(XEvent *e)
 		issel = True;
 }
 
-static void
-leavenotify(XEvent *e)
-{
-	XCrossingEvent *ev = &e->xcrossing;
-
-	if((ev->window == root) && !ev->same_screen)
-		issel = True;
-}
-
 static void
 expose(XEvent *e)
 {
@@ -302,6 +168,32 @@ expose(XEvent *e)
 	}
 }
 
+static void
+keypress(XEvent *e)
+{
+	XKeyEvent *ev = &e->xkey;
+	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
+	unsigned int i;
+	KeySym keysym;
+
+	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+	for(i = 0; i < len; i++)
+		if((keysym == key[i].keysym) && (key[i].mod == ev->state)) {
+			if(key[i].func)
+				key[i].func(&key[i].arg);
+			return;
+		}
+}
+
+static void
+leavenotify(XEvent *e)
+{
+	XCrossingEvent *ev = &e->xcrossing;
+
+	if((ev->window == root) && !ev->same_screen)
+		issel = True;
+}
+
 static void
 maprequest(XEvent *e)
 {
@@ -321,6 +213,40 @@ maprequest(XEvent *e)
 		manage(ev->window, &wa);
 }
 
+static void
+movemouse(Client *c)
+{
+	XEvent ev;
+	int x1, y1, ocx, ocy, di;
+	unsigned int dui;
+	Window dummy;
+
+	ocx = c->x;
+	ocy = c->y;
+	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
+				None, cursor[CurMove], CurrentTime) != GrabSuccess)
+		return;
+	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
+	for(;;) {
+		XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
+		switch (ev.type) {
+		default: break;
+		case Expose:
+			handler[Expose](&ev);
+			break;
+		case MotionNotify:
+			XFlush(dpy);
+			c->x = ocx + (ev.xmotion.x - x1);
+			c->y = ocy + (ev.xmotion.y - y1);
+			resize(c, False);
+			break;
+		case ButtonRelease:
+			XUngrabPointer(dpy, CurrentTime);
+			return;
+		}
+	}
+}
+
 static void
 propertynotify(XEvent *e)
 {
@@ -354,6 +280,40 @@ propertynotify(XEvent *e)
 	}
 }
 
+static void
+resizemouse(Client *c)
+{
+	XEvent ev;
+	int ocx, ocy;
+
+	ocx = c->x;
+	ocy = c->y;
+	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,
+				None, cursor[CurResize], CurrentTime) != GrabSuccess)
+		return;
+	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
+	for(;;) {
+		XMaskEvent(dpy, MouseMask | ExposureMask, &ev);
+		switch(ev.type) {
+		default: break;
+		case Expose:
+			handler[Expose](&ev);
+			break;
+		case MotionNotify:
+			XFlush(dpy);
+			c->w = abs(ocx - ev.xmotion.x);
+			c->h = abs(ocy - ev.xmotion.y);
+			c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
+			c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
+			resize(c, True);
+			break;
+		case ButtonRelease:
+			XUngrabPointer(dpy, CurrentTime);
+			return;
+		}
+	}
+}
+
 static void
 unmapnotify(XEvent *e)
 {
@@ -363,3 +323,33 @@ unmapnotify(XEvent *e)
 	if((c = getclient(ev->window)))
 		unmanage(c);
 }
+
+/* extern functions */
+
+void (*handler[LASTEvent]) (XEvent *) = {
+	[ButtonPress] = buttonpress,
+	[ConfigureRequest] = configurerequest,
+	[DestroyNotify] = destroynotify,
+	[EnterNotify] = enternotify,
+	[LeaveNotify] = leavenotify,
+	[Expose] = expose,
+	[KeyPress] = keypress,
+	[MapRequest] = maprequest,
+	[PropertyNotify] = propertynotify,
+	[UnmapNotify] = unmapnotify
+};
+
+void
+grabkeys()
+{
+	static unsigned int len = key ? sizeof(key) / sizeof(key[0]) : 0;
+	unsigned int i;
+	KeyCode code;
+
+	for(i = 0; i < len; i++) {
+		code = XKeysymToKeycode(dpy, key[i].keysym);
+		XUngrabKey(dpy, code, key[i].mod, root);
+		XGrabKey(dpy, code, key[i].mod, root, True,
+				GrabModeAsync, GrabModeAsync);
+	}
+}

main.c

@@ -3,31 +3,17 @@
  * See LICENSE file for license details.
  */
 
+#include "dwm.h"
+
 #include <errno.h>
-#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-
 #include <X11/cursorfont.h>
 #include <X11/Xatom.h>
 #include <X11/Xproto.h>
 
-#include "dwm.h"
-
-/********** CUSTOMIZE **********/
-
-char *tags[TLast] = {
-	[Tscratch] = "scratch",
-	[Tdev] = "dev",
-	[Twww] = "www",
-	[Twork] = "work",
-};
-
-/********** CUSTOMIZE **********/
-
-/* X structs */
 Display *dpy;
 Window root, barwin;
 Atom wm_atom[WMLast], net_atom[NetLast];
@@ -48,8 +34,17 @@ static const char version[] =
 	"dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
 static int (*xerrorxlib)(Display *, XErrorEvent *);
 
+/* static functions */
+
 static void
-usage() {	eprint("usage: dwm [-v]\n"); }
+cleanup()
+{
+	while(sel) {
+		resize(sel, True);
+		unmanage(sel);
+	}
+	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+}
 
 static void
 scan()
@@ -73,22 +68,6 @@ scan()
 		XFree(wins);
 }
 
-static void
-cleanup()
-{
-	while(sel) {
-		resize(sel, True);
-		unmanage(sel);
-	}
-	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
-}
-
-void
-quit(Arg *arg)
-{
-	running = False;
-}
-
 static int
 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
 {
@@ -109,6 +88,19 @@ win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
 	return res;
 }
 
+/*
+ * Startup Error handler to check if another window manager
+ * is already running.
+ */
+static int
+xerrorstart(Display *dsply, XErrorEvent *ee)
+{
+	otherwm = True;
+	return -1;
+}
+
+/* extern functions */
+
 int
 getproto(Window w)
 {
@@ -144,15 +136,10 @@ sendevent(Window w, Atom a, long value)
 	XFlush(dpy);
 }
 
-/*
- * Startup Error handler to check if another window manager
- * is already running.
- */
-static int
-xerrorstart(Display *dsply, XErrorEvent *ee)
+void
+quit(Arg *arg)
 {
-	otherwm = True;
-	return -1;
+	running = False;
 }
 
 /*
@@ -201,7 +188,7 @@ main(int argc, char *argv[])
 			exit(0);
 			break;
 		default:
-			usage();
+			eprint("usage: dwm [-v]\n");
 			break;
 		}
 	}

tag.c

@@ -2,71 +2,39 @@
  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
-#include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
-#include <X11/Xatom.h>
 #include <X11/Xutil.h>
 
-#include "dwm.h"
+/********** CUSTOMIZE **********/
+
+char *tags[TLast] = {
+	[Tscratch] = "scratch",
+	[Tdev] = "dev",
+	[Twww] = "www",
+	[Twork] = "work",
+};
 
 static Rule rule[] = {
 	/* class			instance	tags						dofloat */
 	{ "Firefox-bin",	"Gecko",	{ [Twww] = "www" },			False },
 };
 
-void (*arrange)(Arg *) = dotile;
+/********** CUSTOMIZE **********/
 
-Client *
-getnext(Client *c)
-{
-	for(; c && !c->tags[tsel]; c = c->next);
-	return c;
-}
+/* extern functions */
+
+void (*arrange)(Arg *) = dotile;
 
 void
-settags(Client *c)
+appendtag(Arg *arg)
 {
-	XClassHint ch;
-	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
-	unsigned int i, j;
-	Bool matched = False;
-
-	if(!len) {
-		c->tags[tsel] = tags[tsel];
+	if(!sel)
 		return;
-	}
-
-	if(XGetClassHint(dpy, c->win, &ch)) {
-		if(ch.res_class && ch.res_name) {
-			for(i = 0; i < len; i++)
-				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
-					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
-				{
-					for(j = 0; j < TLast; j++)
-						c->tags[j] = rule[i].tags[j];
-					c->dofloat = rule[i].dofloat;
-					matched = True;
-					break;
-				}
-		}
-		if(ch.res_class)
-			XFree(ch.res_class);
-		if(ch.res_name)
-			XFree(ch.res_name);
-	}
 
-	if(!matched)
-		c->tags[tsel] = tags[tsel];
-}
-
-void
-view(Arg *arg)
-{
-	tsel = arg->i;
+	sel->tags[arg->i] = tags[arg->i];
 	arrange(NULL);
-	drawall();
 }
 
 void
@@ -147,14 +115,11 @@ dotile(Arg *arg)
 	drawall();
 }
 
-void
-appendtag(Arg *arg)
+Client *
+getnext(Client *c)
 {
-	if(!sel)
-		return;
-
-	sel->tags[arg->i] = tags[arg->i];
-	arrange(NULL);
+	for(; c && !c->tags[tsel]; c = c->next);
+	return c;
 }
 
 void
@@ -169,3 +134,46 @@ replacetag(Arg *arg)
 	appendtag(arg);
 }
 
+void
+settags(Client *c)
+{
+	XClassHint ch;
+	static unsigned int len = rule ? sizeof(rule) / sizeof(rule[0]) : 0;
+	unsigned int i, j;
+	Bool matched = False;
+
+	if(!len) {
+		c->tags[tsel] = tags[tsel];
+		return;
+	}
+
+	if(XGetClassHint(dpy, c->win, &ch)) {
+		if(ch.res_class && ch.res_name) {
+			for(i = 0; i < len; i++)
+				if(!strncmp(rule[i].class, ch.res_class, sizeof(rule[i].class))
+					&& !strncmp(rule[i].instance, ch.res_name, sizeof(rule[i].instance)))
+				{
+					for(j = 0; j < TLast; j++)
+						c->tags[j] = rule[i].tags[j];
+					c->dofloat = rule[i].dofloat;
+					matched = True;
+					break;
+				}
+		}
+		if(ch.res_class)
+			XFree(ch.res_class);
+		if(ch.res_name)
+			XFree(ch.res_name);
+	}
+
+	if(!matched)
+		c->tags[tsel] = tags[tsel];
+}
+
+void
+view(Arg *arg)
+{
+	tsel = arg->i;
+	arrange(NULL);
+	drawall();
+}

util.c

@@ -2,24 +2,15 @@
  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  * See LICENSE file for license details.
  */
+#include "dwm.h"
 
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
-#include "dwm.h"
-
-void
-eprint(const char *errstr, ...) {
-	va_list ap;
-	va_start(ap, errstr);
-	vfprintf(stderr, errstr, ap);
-	va_end(ap);
-	exit(1);
-}
+/* static functions */
 
 static void
 bad_malloc(unsigned int size)
@@ -29,6 +20,8 @@ bad_malloc(unsigned int size)
 	exit(1);
 }
 
+/* extern functions */
+
 void *
 emallocz(unsigned int size)
 {
@@ -38,6 +31,15 @@ emallocz(unsigned int size)
 	return res;
 }
 
+void
+eprint(const char *errstr, ...) {
+	va_list ap;
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(1);
+}
+
 void
 spawn(Arg *arg)
 {