arg@644: /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
garbeam@5:  * See LICENSE file for license details.
garbeam@5:  */
garbeam@76: #include "dwm.h"
garbeam@10: #include <stdlib.h>
garbeam@5: #include <string.h>
garbeam@5: #include <X11/Xatom.h>
garbeam@32: #include <X11/Xutil.h>
garbeam@5: 
arg@730: /* static */
garbeam@50: 
garbeam@26: static void
arg@461: detachstack(Client *c) {
arg@446: 	Client **tc;
arg@446: 	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
arg@446: 	*tc = c->snext;
arg@446: }
arg@446: 
arg@446: static void
arg@461: grabbuttons(Client *c, Bool focused) {
arg@372: 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
arg@372: 
arg@452: 	if(focused) {
arg@372: 		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 
arg@372: 		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 
arg@372: 		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@372: 	}
arg@372: 	else
arg@372: 		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
arg@372: 				GrabModeAsync, GrabModeSync, None, None);
arg@318: }
arg@318: 
arg@725: static void
arg@725: setclientstate(Client *c, long state) {
arg@725: 	long data[] = {state, None};
arg@725: 	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
arg@725: 			PropModeReplace, (unsigned char *)data, 2);
arg@725: }
arg@725: 
garbeam@76: static int
arg@461: xerrordummy(Display *dsply, XErrorEvent *ee) {
garbeam@76: 	return 0;
garbeam@5: }
garbeam@5: 
arg@730: /* extern */
garbeam@20: 
garbeam@20: void
arg@491: configure(Client *c) {
arg@491: 	XEvent synev;
arg@491: 
arg@491: 	synev.type = ConfigureNotify;
arg@491: 	synev.xconfigure.display = dpy;
arg@491: 	synev.xconfigure.event = c->win;
arg@491: 	synev.xconfigure.window = c->win;
arg@491: 	synev.xconfigure.x = c->x;
arg@491: 	synev.xconfigure.y = c->y;
arg@491: 	synev.xconfigure.width = c->w;
arg@491: 	synev.xconfigure.height = c->h;
arg@491: 	synev.xconfigure.border_width = c->border;
arg@491: 	synev.xconfigure.above = None;
arg@491: 	XSendEvent(dpy, c->win, True, NoEventMask, &synev);
arg@491: }
arg@491: 
arg@491: void
arg@461: focus(Client *c) {
arg@709: 	if(c && !isvisible(c))
arg@239: 		return;
arg@712: 	if(sel && sel != c) {
arg@712: 		grabbuttons(sel, False);
arg@712: 		XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
arg@318: 	}
arg@400: 	if(c) {
arg@711: 		detachstack(c);
arg@711: 		c->snext = stack;
arg@711: 		stack = c;
arg@711: 		grabbuttons(c, True);
arg@714: 	}
arg@714: 	sel = c;
arg@714: 	drawstatus();
arg@716: 	if(!selscreen)
arg@714: 		return;
arg@715: 	if(c) {
arg@711: 		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
arg@711: 		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
arg@400: 	}
arg@712: 	else
arg@400: 		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
garbeam@13: }
garbeam@13: 
garbeam@76: Client *
arg@461: getclient(Window w) {
garbeam@76: 	Client *c;
arg@123: 
garbeam@76: 	for(c = clients; c; c = c->next)
garbeam@76: 		if(c->win == w)
garbeam@76: 			return c;
garbeam@76: 	return NULL;
garbeam@76: }
garbeam@76: 
arg@734: Bool
arg@734: isprotodel(Client *c) {
arg@734: 	int i, n;
arg@734: 	Atom *protocols;
arg@734: 	Bool ret = False;
arg@734: 
arg@734: 	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
arg@734: 		for(i = 0; !ret && i < n; i++)
arg@734: 			if(protocols[i] == wmatom[WMDelete])
arg@734: 				ret = True;
arg@734: 		XFree(protocols);
arg@734: 	}
arg@734: 	return ret;
arg@734: }
arg@734: 
garbeam@76: void
arg@461: killclient(Arg *arg) {
garbeam@76: 	if(!sel)
garbeam@76: 		return;
arg@734: 	if(isprotodel(sel))
garbeam@77: 		sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
garbeam@76: 	else
garbeam@76: 		XKillClient(dpy, sel->win);
garbeam@76: }
garbeam@76: 
garbeam@76: void
arg@461: manage(Window w, XWindowAttributes *wa) {
arg@431: 	Client *c;
arg@123: 	Window trans;
garbeam@5: 
garbeam@5: 	c = emallocz(sizeof(Client));
arg@178: 	c->tags = emallocz(ntags * sizeof(Bool));
garbeam@5: 	c->win = w;
arg@687: 	c->x = wa->x;
arg@687: 	c->y = wa->y;
arg@687: 	c->w = wa->width;
arg@115: 	c->h = wa->height;
arg@708: 	if(c->w == sw && c->h == sh) {
arg@708: 		c->border = 0;
arg@708: 		c->x = sx;
arg@708: 		c->y = sy;
arg@708: 	}
arg@708: 	else {
arg@708: 		c->border = BORDERPX;
arg@718: 		if(c->x + c->w + 2 * c->border > wax + waw)
arg@718: 			c->x = wax + waw - c->w - 2 * c->border;
arg@718: 		if(c->y + c->h + 2 * c->border > way + wah)
arg@718: 			c->y = way + wah - c->h - 2 * c->border;
arg@708: 		if(c->x < wax)
arg@708: 			c->x = wax;
arg@708: 		if(c->y < way)
arg@708: 			c->y = way;
arg@708: 	}
arg@639: 	updatesizehints(c);
garbeam@26: 	XSelectInput(dpy, c->win,
arg@127: 		StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
garbeam@53: 	XGetTransientForHint(dpy, c->win, &trans);
arg@372: 	grabbuttons(c, False);
arg@715: 	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
arg@500: 	updatetitle(c);
arg@431: 	settags(c, getclient(trans));
garbeam@80: 	if(!c->isfloat)
arg@549: 		c->isfloat = trans || c->isfixed;
arg@381: 	if(clients)
arg@381: 		clients->prev = c;
arg@381: 	c->next = clients;
arg@446: 	c->snext = stack;
arg@446: 	stack = clients = c;
arg@687: 	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
arg@270: 	XMapWindow(dpy, c->win);
arg@725: 	setclientstate(c, NormalState);
arg@261: 	if(isvisible(c))
garbeam@51: 		focus(c);
arg@533: 	arrange();
garbeam@94: }
garbeam@94: 
garbeam@94: void
arg@708: resize(Client *c, Bool sizehints) {
arg@733: 	float actual, dx, dy, max, min;
arg@163: 	XWindowChanges wc;
garbeam@18: 
arg@721: 	if(c->w <= 0 || c->h <= 0)
arg@721: 		return;
arg@129: 	if(sizehints) {
arg@129: 		if(c->minw && c->w < c->minw)
arg@129: 			c->w = c->minw;
arg@129: 		if(c->minh && c->h < c->minh)
arg@129: 			c->h = c->minh;
arg@129: 		if(c->maxw && c->w > c->maxw)
arg@129: 			c->w = c->maxw;
arg@129: 		if(c->maxh && c->h > c->maxh)
arg@129: 			c->h = c->maxh;
arg@731: 		/* inspired by algorithm from fluxbox */
arg@731: 		if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
arg@731: 			dx = (float)(c->w - c->basew);
arg@731: 			dy = (float)(c->h - c->baseh);
arg@731: 			min = (float)(c->minax) / (float)(c->minay);
arg@731: 			max = (float)(c->maxax) / (float)(c->maxay);
arg@731: 			actual = dx / dy;
arg@731: 			if(max > 0 && min > 0 && actual > 0) {
arg@731: 				if(actual < min) {
arg@732: 					dy = (dx * min + dy) / (min * min + 1);
arg@732: 					dx = dy * min;
arg@731: 					c->w = (int)dx + c->basew;
arg@731: 					c->h = (int)dy + c->baseh;
arg@731: 				}
arg@731: 				else if(actual > max) {
arg@732: 					dy = (dx * min + dy) / (max * max + 1);
arg@732: 					dx = dy * min;
arg@731: 					c->w = (int)dx + c->basew;
arg@731: 					c->h = (int)dy + c->baseh;
arg@731: 				}
arg@731: 			}
arg@731: 		}
arg@731: 		if(c->incw)
arg@731: 			c->w -= (c->w - c->basew) % c->incw;
arg@731: 		if(c->inch)
arg@731: 			c->h -= (c->h - c->baseh) % c->inch;
garbeam@52: 	}
arg@708: 	if(c->w == sw && c->h == sh)
arg@708: 		c->border = 0;
arg@708: 	else
arg@708: 		c->border = BORDERPX;
arg@465: 	/* offscreen appearance fixes */
arg@718: 	if(c->x > sw)
arg@718: 		c->x = sw - c->w - 2 * c->border;
arg@718: 	if(c->y > sh)
arg@718: 		c->y = sh - c->h - 2 * c->border;
arg@708: 	if(c->x + c->w + 2 * c->border < sx)
arg@517: 		c->x = sx;
arg@708: 	if(c->y + c->h + 2 * c->border < sy)
arg@708: 		c->y = sy;
arg@163: 	wc.x = c->x;
arg@163: 	wc.y = c->y;
arg@163: 	wc.width = c->w;
arg@163: 	wc.height = c->h;
arg@708: 	wc.border_width = c->border;
arg@452: 	XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
arg@630: 	configure(c);
garbeam@79: 	XSync(dpy, False);
garbeam@18: }
garbeam@18: 
garbeam@76: void
arg@639: updatesizehints(Client *c) {
arg@123: 	long msize;
garbeam@76: 	XSizeHints size;
arg@123: 
garbeam@76: 	if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
garbeam@76: 		size.flags = PSize;
garbeam@76: 	c->flags = size.flags;
garbeam@76: 	if(c->flags & PBaseSize) {
garbeam@76: 		c->basew = size.base_width;
garbeam@76: 		c->baseh = size.base_height;
garbeam@76: 	}
garbeam@76: 	else
garbeam@76: 		c->basew = c->baseh = 0;
garbeam@76: 	if(c->flags & PResizeInc) {
garbeam@76: 		c->incw = size.width_inc;
garbeam@76: 		c->inch = size.height_inc;
garbeam@76: 	}
garbeam@76: 	else
garbeam@76: 		c->incw = c->inch = 0;
garbeam@76: 	if(c->flags & PMaxSize) {
garbeam@76: 		c->maxw = size.max_width;
garbeam@76: 		c->maxh = size.max_height;
garbeam@76: 	}
garbeam@76: 	else
garbeam@76: 		c->maxw = c->maxh = 0;
garbeam@76: 	if(c->flags & PMinSize) {
garbeam@76: 		c->minw = size.min_width;
garbeam@76: 		c->minh = size.min_height;
garbeam@76: 	}
garbeam@76: 	else
garbeam@76: 		c->minw = c->minh = 0;
arg@731: 	if(c->flags & PAspect) {
arg@731: 		c->minax = size.min_aspect.x;
arg@731: 		c->minay = size.min_aspect.y;
arg@731: 		c->maxax = size.max_aspect.x;
arg@731: 		c->maxay = size.max_aspect.y;
arg@731: 	}
arg@731: 	else
arg@731: 		c->minax = c->minay = c->maxax = c->maxay = 0;
arg@550: 	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
arg@550: 				c->maxw == c->minw && c->maxh == c->minh);
garbeam@76: }
garbeam@76: 
garbeam@76: void
arg@461: updatetitle(Client *c) {
arg@123: 	char **list = NULL;
arg@377: 	int n;
garbeam@76: 	XTextProperty name;
garbeam@76: 
garbeam@76: 	name.nitems = 0;
garbeam@76: 	c->name[0] = 0;
garbeam@77: 	XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
garbeam@76: 	if(!name.nitems)
garbeam@76: 		XGetWMName(dpy, c->win, &name);
garbeam@76: 	if(!name.nitems)
garbeam@76: 		return;
garbeam@76: 	if(name.encoding == XA_STRING)
arg@581: 		strncpy(c->name, (char *)name.value, sizeof c->name);
garbeam@76: 	else {
garbeam@76: 		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
garbeam@76: 				&& n > 0 && *list)
garbeam@76: 		{
arg@581: 			strncpy(c->name, *list, sizeof c->name);
garbeam@76: 			XFreeStringList(list);
garbeam@76: 		}
garbeam@76: 	}
garbeam@76: 	XFree(name.value);
garbeam@10: }
garbeam@10: 
garbeam@10: void
arg@461: unmanage(Client *c) {
arg@450: 	Client *nc;
arg@450: 
arg@472: 	/* The server grab construct avoids race conditions. */
garbeam@10: 	XGrabServer(dpy);
garbeam@75: 	XSetErrorHandler(xerrordummy);
arg@400: 	detach(c);
arg@448: 	detachstack(c);
arg@400: 	if(sel == c) {
arg@450: 		for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
arg@450: 		focus(nc);
arg@400: 	}
garbeam@18: 	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
arg@725: 	setclientstate(c, WithdrawnState);
arg@178: 	free(c->tags);
garbeam@10: 	free(c);
garbeam@79: 	XSync(dpy, False);
garbeam@74: 	XSetErrorHandler(xerror);
garbeam@10: 	XUngrabServer(dpy);
arg@533: 	arrange();
garbeam@10: }