paulo@0: /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
paulo@0:  * See LICENSE file for license details.
paulo@0:  */
paulo@0: #include "dwm.h"
paulo@0: #include <stdio.h>
paulo@0: #include <stdlib.h>
paulo@0: #include <string.h>
paulo@0: #include <X11/Xatom.h>
paulo@0: #include <X11/Xutil.h>
paulo@0: 
paulo@0: /* static */
paulo@0: 
paulo@0: static void
paulo@0: attachstack(Client *c) {
paulo@0: 	c->snext = stack;
paulo@0: 	stack = c;
paulo@0: }
paulo@0: 
paulo@0: static void
paulo@0: detachstack(Client *c) {
paulo@0: 	Client **tc;
paulo@0: 
paulo@0: 	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
paulo@0: 	*tc = c->snext;
paulo@0: }
paulo@0: 
paulo@0: static void
paulo@0: grabbuttons(Client *c, Bool focused) {
paulo@0: 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
paulo@0: 
paulo@0: 	if(focused) {
paulo@0: 		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 
paulo@0: 		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 
paulo@0: 		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: 	}
paulo@0: 	else
paulo@0: 		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
paulo@0: 				GrabModeAsync, GrabModeSync, None, None);
paulo@0: }
paulo@0: 
paulo@0: static Bool
paulo@0: isprotodel(Client *c) {
paulo@0: 	int i, n;
paulo@0: 	Atom *protocols;
paulo@0: 	Bool ret = False;
paulo@0: 
paulo@0: 	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
paulo@0: 		for(i = 0; !ret && i < n; i++)
paulo@0: 			if(protocols[i] == wmatom[WMDelete])
paulo@0: 				ret = True;
paulo@0: 		XFree(protocols);
paulo@0: 	}
paulo@0: 	return ret;
paulo@0: }
paulo@0: 
paulo@0: static void
paulo@0: setclientstate(Client *c, long state) {
paulo@0: 	long data[] = {state, None};
paulo@0: 
paulo@0: 	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
paulo@0: 			PropModeReplace, (unsigned char *)data, 2);
paulo@0: }
paulo@0: 
paulo@0: static void
paulo@0: togglemax(Client *c) {
paulo@0: 	XEvent ev;
paulo@0: 
paulo@0: 	if(c->isfixed)
paulo@0: 		return;
paulo@0: 	if((c->ismax = !c->ismax)) {
paulo@0: 		c->rx = c->x;
paulo@0: 		c->ry = c->y;
paulo@0: 		c->rw = c->w;
paulo@0: 		c->rh = c->h;
paulo@0: 		resize(c, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
paulo@0: 	}
paulo@0: 	else
paulo@0: 		resize(c, c->rx, c->ry, c->rw, c->rh, True);
paulo@0: 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
paulo@0: }
paulo@0: 
paulo@0: static int
paulo@0: xerrordummy(Display *dsply, XErrorEvent *ee) {
paulo@0: 	return 0;
paulo@0: }
paulo@0: 
paulo@0: /* extern */
paulo@0: 
paulo@0: void
paulo@0: attach(Client *c) {
paulo@0: 	if(clients)
paulo@0: 		clients->prev = c;
paulo@0: 	c->next = clients;
paulo@0: 	clients = c;
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: configure(Client *c) {
paulo@0: 	XConfigureEvent ce;
paulo@0: 
paulo@0: 	ce.type = ConfigureNotify;
paulo@0: 	ce.display = dpy;
paulo@0: 	ce.event = c->win;
paulo@0: 	ce.window = c->win;
paulo@0: 	ce.x = c->x;
paulo@0: 	ce.y = c->y;
paulo@0: 	ce.width = c->w;
paulo@0: 	ce.height = c->h;
paulo@0: 	ce.border_width = c->border;
paulo@0: 	ce.above = None;
paulo@0: 	ce.override_redirect = False;
paulo@0: 	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: detach(Client *c) {
paulo@0: 	if(c->prev)
paulo@0: 		c->prev->next = c->next;
paulo@0: 	if(c->next)
paulo@0: 		c->next->prev = c->prev;
paulo@0: 	if(c == clients)
paulo@0: 		clients = c->next;
paulo@0: 	c->next = c->prev = NULL;
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: focus(Client *c) {
paulo@0: 	if(c && !isvisible(c))
paulo@0: 		return;
paulo@0: 	if(sel && sel != c) {
paulo@0: 		grabbuttons(sel, False);
paulo@0: 		XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
paulo@0: 	}
paulo@0: 	if(c) {
paulo@0: 		detachstack(c);
paulo@0: 		attachstack(c);
paulo@0: 		grabbuttons(c, True);
paulo@0: 	}
paulo@0: 	sel = c;
paulo@0: 	drawstatus();
paulo@0: 	if(!selscreen)
paulo@0: 		return;
paulo@0: 	if(c) {
paulo@0: 		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
paulo@0: 		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
paulo@0: 	}
paulo@0: 	else
paulo@0: 		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: killclient(Arg *arg) {
paulo@0: 	if(!sel)
paulo@0: 		return;
paulo@0: 	if(isprotodel(sel))
paulo@0: 		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
paulo@0: 	else
paulo@0: 		XKillClient(dpy, sel->win);
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: manage(Window w, XWindowAttributes *wa) {
paulo@0: 	Client *c, *t;
paulo@0: 	Window trans;
paulo@0: 	XWindowChanges wc;
paulo@0: 
paulo@0: 	c = emallocz(sizeof(Client));
paulo@0: 	c->tags = emallocz(ntags * sizeof(Bool));
paulo@0: 	c->win = w;
paulo@0: 	c->x = wa->x;
paulo@0: 	c->y = wa->y;
paulo@0: 	c->w = wa->width;
paulo@0: 	c->h = wa->height;
paulo@0: 	if(c->w == sw && c->h == sh) {
paulo@0: 		c->border = 0;
paulo@0: 		c->x = sx;
paulo@0: 		c->y = sy;
paulo@0: 	}
paulo@0: 	else { 
paulo@0: 		c->border = BORDERPX;
paulo@0: 		if(c->x > wax + waw && c-> w < waw)
paulo@0: 			c->x = wax + waw - c->w - 2 * c->border;
paulo@0: 		if(c->y > way + wah && c-> h < wah)
paulo@0: 			c->y = way + wah - c->h - 2 * c->border;
paulo@0: 		if(c->x < wax && c->w < waw)
paulo@0: 			c->x = wax;
paulo@0: 		if(c->y < way && c->h < wah)
paulo@0: 			c->y = way;
paulo@0: 	}
paulo@0: 	XSelectInput(dpy, w,
paulo@0: 		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
paulo@0: 	XGetTransientForHint(dpy, w, &trans);
paulo@0: 	grabbuttons(c, False);
paulo@0: 	wc.border_width = c->border;
paulo@0: 	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
paulo@0: 	XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
paulo@0: 	configure(c); /* propagates border_width, if size doesn't change */
paulo@0: 	updatetitle(c);
paulo@0: 	for(t = clients; t && t->win != trans; t = t->next);
paulo@0: 	settags(c, t);
paulo@0: 	if(!c->isversatile)
paulo@0: 		c->isversatile = (t != NULL) || c->isfixed;
paulo@0: 	attach(c);
paulo@0: 	attachstack(c);
paulo@0: 	c->isbanned = True;
paulo@0: 	XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
paulo@0: 	XMapWindow(dpy, w);
paulo@0: 	setclientstate(c, NormalState);
paulo@0: 	if(isvisible(c))
paulo@0: 		focus(c);
paulo@0: 	updatesizehints(c);
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
paulo@0: 	float actual, dx, dy, max, min;
paulo@0: 	XWindowChanges wc;
paulo@0: 
paulo@0: 	if(w <= 0 || h <= 0)
paulo@0: 		return;
paulo@0: 	if(sizehints) {
paulo@0: 		if(c->minw && w < c->minw)
paulo@0: 			w = c->minw;
paulo@0: 		if(c->minh && h < c->minh)
paulo@0: 			h = c->minh;
paulo@0: 		if(c->maxw && w > c->maxw)
paulo@0: 			w = c->maxw;
paulo@0: 		if(c->maxh && h > c->maxh)
paulo@0: 			h = c->maxh;
paulo@0: 		/* inspired by algorithm from fluxbox */
paulo@0: 		if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
paulo@0: 			dx = (float)(w - c->basew);
paulo@0: 			dy = (float)(h - c->baseh);
paulo@0: 			min = (float)(c->minax) / (float)(c->minay);
paulo@0: 			max = (float)(c->maxax) / (float)(c->maxay);
paulo@0: 			actual = dx / dy;
paulo@0: 			if(max > 0 && min > 0 && actual > 0) {
paulo@0: 				if(actual < min) {
paulo@0: 					dy = (dx * min + dy) / (min * min + 1);
paulo@0: 					dx = dy * min;
paulo@0: 					w = (int)dx + c->basew;
paulo@0: 					h = (int)dy + c->baseh;
paulo@0: 				}
paulo@0: 				else if(actual > max) {
paulo@0: 					dy = (dx * min + dy) / (max * max + 1);
paulo@0: 					dx = dy * min;
paulo@0: 					w = (int)dx + c->basew;
paulo@0: 					h = (int)dy + c->baseh;
paulo@0: 				}
paulo@0: 			}
paulo@0: 		}
paulo@0: 		if(c->incw)
paulo@0: 			w -= (w - c->basew) % c->incw;
paulo@0: 		if(c->inch)
paulo@0: 			h -= (h - c->baseh) % c->inch;
paulo@0: 	}
paulo@0: 	if(w == sw && h == sh)
paulo@0: 		c->border = 0; 
paulo@0: 	else
paulo@0: 		c->border = BORDERPX;
paulo@0: 	/* offscreen appearance fixes */
paulo@0: 	if(x > sw)
paulo@0: 		x = sw - w - 2 * c->border;
paulo@0: 	if(y > sh)
paulo@0: 		y = sh - h - 2 * c->border;
paulo@0: 	if(x + w + 2 * c->border < sx)
paulo@0: 		x = sx;
paulo@0: 	if(y + h + 2 * c->border < sy)
paulo@0: 		y = sy;
paulo@0: 	/* if(c->x != x || c->y != y || c->w != w || c->h != h) { */
paulo@0: 		c->x = wc.x = x;
paulo@0: 		c->y = wc.y = y;
paulo@0: 		c->w = wc.width = w;
paulo@0: 		c->h = wc.height = h;
paulo@0: 		wc.border_width = c->border;
paulo@0: 		XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
paulo@0: 		configure(c);
paulo@0: 		XSync(dpy, False);
paulo@0: 	/* } */
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: toggleversatile(Arg *arg) {
paulo@0: 	if(!sel || lt->arrange == versatile)
paulo@0: 		return;
paulo@0: 	sel->isversatile = !sel->isversatile;
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: updatesizehints(Client *c) {
paulo@0: 	long msize;
paulo@0: 	XSizeHints size;
paulo@0: 
paulo@0: 	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
paulo@0: 		size.flags = PSize;
paulo@0: 	c->flags = size.flags;
paulo@0: 	if(c->flags & PBaseSize) {
paulo@0: 		c->basew = size.base_width;
paulo@0: 		c->baseh = size.base_height;
paulo@0: 	}
paulo@0: 	else
paulo@0: 		c->basew = c->baseh = 0;
paulo@0: 	if(c->flags & PResizeInc) {
paulo@0: 		c->incw = size.width_inc;
paulo@0: 		c->inch = size.height_inc;
paulo@0: 	}
paulo@0: 	else
paulo@0: 		c->incw = c->inch = 0;
paulo@0: 	if(c->flags & PMaxSize) {
paulo@0: 		c->maxw = size.max_width;
paulo@0: 		c->maxh = size.max_height;
paulo@0: 	}
paulo@0: 	else
paulo@0: 		c->maxw = c->maxh = 0;
paulo@0: 	if(c->flags & PMinSize) {
paulo@0: 		c->minw = size.min_width;
paulo@0: 		c->minh = size.min_height;
paulo@0: 	}
paulo@0: 	else
paulo@0: 		c->minw = c->minh = 0;
paulo@0: 	if(c->flags & PAspect) {
paulo@0: 		c->minax = size.min_aspect.x;
paulo@0: 		c->minay = size.min_aspect.y;
paulo@0: 		c->maxax = size.max_aspect.x;
paulo@0: 		c->maxay = size.max_aspect.y;
paulo@0: 	}
paulo@0: 	else
paulo@0: 		c->minax = c->minay = c->maxax = c->maxay = 0;
paulo@0: 	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
paulo@0: 			&& c->maxw == c->minw && c->maxh == c->minh);
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: updatetitle(Client *c) {
paulo@0: 	char **list = NULL;
paulo@0: 	int n;
paulo@0: 	XTextProperty name;
paulo@0: 
paulo@0: 	name.nitems = 0;
paulo@0: 	c->name[0] = 0;
paulo@0: 	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
paulo@0: 	if(!name.nitems)
paulo@0: 		XGetWMName(dpy, c->win, &name);
paulo@0: 	if(!name.nitems)
paulo@0: 		return;
paulo@0: 	if(name.encoding == XA_STRING)
paulo@0: 		strncpy(c->name, (char *)name.value, sizeof c->name);
paulo@0: 	else {
paulo@0: 		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
paulo@0: 		&& n > 0 && *list)
paulo@0: 		{
paulo@0: 			strncpy(c->name, *list, sizeof c->name);
paulo@0: 			XFreeStringList(list);
paulo@0: 		}
paulo@0: 	}
paulo@0: 	XFree(name.value);
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: unmanage(Client *c) {
paulo@0: 	Client *nc;
paulo@0: 
paulo@0: 	/* The server grab construct avoids race conditions. */
paulo@0: 	XGrabServer(dpy);
paulo@0: 	XSetErrorHandler(xerrordummy);
paulo@0: 	detach(c);
paulo@0: 	detachstack(c);
paulo@0: 	if(sel == c) {
paulo@0: 		for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
paulo@0: 		focus(nc);
paulo@0: 	}
paulo@0: 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
paulo@0: 	setclientstate(c, WithdrawnState);
paulo@0: 	free(c->tags);
paulo@0: 	free(c);
paulo@0: 	XSync(dpy, False);
paulo@0: 	XSetErrorHandler(xerror);
paulo@0: 	XUngrabServer(dpy);
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: zoom(Arg *arg) {
paulo@0: 	unsigned int n;
paulo@0: 	Client *c;
paulo@0: 
paulo@0: 	if(!sel)
paulo@0: 		return;
paulo@0: 	if(sel->isversatile || (lt->arrange == versatile)) {
paulo@0: 		togglemax(sel);
paulo@0: 		return;
paulo@0: 	}
paulo@0: 	for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
paulo@0: 		n++;
paulo@0: 	if((c = sel) == nexttiled(clients))
paulo@0: 		if(!(c = nexttiled(c->next)))
paulo@0: 			return;
paulo@0: 	detach(c);
paulo@0: 	attach(c);
paulo@0: 	focus(c);
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: Client *
paulo@0: prevtiled(Client *c) {
paulo@0: 	for(; c && (c->isversatile || !isvisible(c)); c = c->prev);
paulo@0: 	return c;
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: pushup(Arg *arg) {
paulo@0: 	Client *c;
paulo@0: 
paulo@0: 	if(!sel || sel->isversatile)
paulo@0: 		return;
paulo@0: 	if((c = prevtiled(sel->prev))) {
paulo@0: 		/* attach before c */
paulo@0: 		detach(sel);
paulo@0: 		sel->next = c;
paulo@0: 		sel->prev = c->prev;
paulo@0: 		c->prev = sel;
paulo@0: 		if(sel->prev)
paulo@0: 			sel->prev->next = sel;
paulo@0: 		else
paulo@0: 			clients = sel;
paulo@0: 	} else {
paulo@0: 		/* move to the end */
paulo@0: 		for(c = sel; c->next; c = c->next);
paulo@0: 		detach(sel);
paulo@0: 		sel->prev = c;
paulo@0: 		c->next = sel;
paulo@0: 	}
paulo@0: 	focus(sel);
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: pushdown(Arg *arg) {
paulo@0: 	Client *c;
paulo@0: 
paulo@0: 	if(!sel || sel->isversatile)
paulo@0: 		return;
paulo@0: 	if((c = nexttiled(sel->next))) {
paulo@0: 		/* attach after c */
paulo@0: 		detach(sel);
paulo@0: 		sel->prev = c;
paulo@0: 		sel->next = c->next;
paulo@0: 		c->next = sel;
paulo@0: 		if(sel->next)
paulo@0: 			sel->next->prev = sel;
paulo@0: 	} else {
paulo@0: 		/* move to the front */
paulo@0: 		detach(sel);
paulo@0: 		attach(sel);
paulo@0: 	}
paulo@0: 	focus(sel);
paulo@0: 	lt->arrange();
paulo@0: }
paulo@0: 
paulo@0: void
paulo@0: moveresize(Arg *arg) {
paulo@0: 	int x, y, w, h, nx, ny, nw, nh, ox, oy, ow, oh;
paulo@0: 	char xAbs, yAbs, wAbs, hAbs;
paulo@0: 	int mx, my, dx, dy, nmx, nmy;
paulo@0: 	unsigned int dui;
paulo@0: 	Window dummy;
paulo@0: 
paulo@0: 	if (lt->arrange != versatile)
paulo@0: 		if (!sel || !sel->isversatile || !arg)
paulo@0: 			return;
paulo@0: 	if(sscanf(arg->cmd, "%d%c %d%c %d%c %d%c", &x, &xAbs, &y, &yAbs, &w, &wAbs, &h, &hAbs) != 8)
paulo@0: 		return;
paulo@0: 	nx = xAbs == 'X' ? x : sel->x + x;
paulo@0: 	ny = yAbs == 'Y' ? y : sel->y + y;
paulo@0: 	nw = wAbs == 'W' ? w : sel->w + w;
paulo@0: 	nh = hAbs == 'H' ? h : sel->h + h;
paulo@0: 
paulo@0: 	ox = sel->x;
paulo@0: 	oy = sel->y;
paulo@0: 	ow = sel->w;
paulo@0: 	oh = sel->h;
paulo@0: 
paulo@0: 	Bool xqp = XQueryPointer(dpy, root, &dummy, &dummy, &mx, &my, &dx, &dy, &dui);
paulo@0: 	resize(sel, nx, ny, nw, nh, True);
paulo@0: 	if (xqp && ox <= mx && (ox + ow) >= mx && oy <= my && (oy + oh) >= my)
paulo@0: 	{
paulo@0: 		nmx = mx-ox+sel->w-ow-1 < 0 ? 0 : mx-ox+sel->w-ow-1;
paulo@0: 		nmy = my-oy+sel->h-oh-1 < 0 ? 0 : my-oy+sel->h-oh-1;
paulo@0: 		XWarpPointer(dpy, None, sel->win, 0, 0, 0, 0, nmx, nmy);
paulo@0: 	}
paulo@0: }
paulo@0: