1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5#include "dwm.h"
  6#include <stdlib.h>
  7#include <X11/keysym.h>
  8#include <X11/Xatom.h>
  9
 10/* static */
 11
 12typedef struct {
 13	unsigned long mod;
 14	KeySym keysym;
 15	void (*func)(Arg *arg);
 16	Arg arg;
 17} Key;
 18
 19KEYS
 20
 21#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
 22
 23static void
 24movemouse(Client *c) {
 25	int x1, y1, ocx, ocy, di;
 26	unsigned int dui;
 27	Window dummy;
 28	XEvent ev;
 29
 30	ocx = c->x;
 31	ocy = c->y;
 32	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 33			None, cursor[CurMove], CurrentTime) != GrabSuccess)
 34		return;
 35	c->ismax = False;
 36	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
 37	for(;;) {
 38		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
 39		switch (ev.type) {
 40		case ButtonRelease:
 41			resize(c, True, TopLeft);
 42			XUngrabPointer(dpy, CurrentTime);
 43			return;
 44		case Expose:
 45			handler[Expose](&ev);
 46			break;
 47		case MotionNotify:
 48			XSync(dpy, False);
 49			c->x = ocx + (ev.xmotion.x - x1);
 50			c->y = ocy + (ev.xmotion.y - y1);
 51			resize(c, False, TopLeft);
 52			break;
 53		}
 54	}
 55}
 56
 57static void
 58resizemouse(Client *c) {
 59	int ocx, ocy;
 60	int nw, nh;
 61	Corner sticky;
 62	XEvent ev;
 63
 64	ocx = c->x;
 65	ocy = c->y;
 66	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
 67				None, cursor[CurResize], CurrentTime) != GrabSuccess)
 68		return;
 69	c->ismax = False;
 70	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
 71	for(;;) {
 72		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
 73		switch(ev.type) {
 74		case ButtonRelease:
 75			resize(c, True, TopLeft);
 76			XUngrabPointer(dpy, CurrentTime);
 77			return;
 78		case Expose:
 79			handler[Expose](&ev);
 80			break;
 81		case MotionNotify:
 82			XSync(dpy, False);
 83			if((nw = abs(ocx - ev.xmotion.x)))
 84				c->w = nw;
 85			if((nh = abs(ocy - ev.xmotion.y)))
 86				c->h = nh;
 87			c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
 88			c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
 89			if(ocx <= ev.xmotion.x)
 90				sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
 91			else
 92				sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
 93			resize(c, True, sticky);
 94			break;
 95		}
 96	}
 97}
 98
 99static void
100buttonpress(XEvent *e) {
101	int x;
102	Arg a;
103	Client *c;
104	XButtonPressedEvent *ev = &e->xbutton;
105
106	if(barwin == ev->window) {
107		x = 0;
108		for(a.i = 0; a.i < ntags; a.i++) {
109			x += textw(tags[a.i]);
110			if(ev->x < x) {
111				if(ev->button == Button1) {
112					if(ev->state & MODKEY)
113						tag(&a);
114					else
115						view(&a);
116				}
117				else if(ev->button == Button3) {
118					if(ev->state & MODKEY)
119						toggletag(&a);
120					else
121						toggleview(&a);
122				}
123				return;
124			}
125		}
126		if((ev->x < x + bmw) && (ev->button == Button1))
127			togglemode(NULL);
128	}
129	else if((c = getclient(ev->window))) {
130		focus(c);
131		if(CLEANMASK(ev->state) != MODKEY)
132			return;
133		if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
134			restack();
135			movemouse(c);
136		}
137		else if(ev->button == Button2)
138			zoom(NULL);
139		else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
140			restack();
141			resizemouse(c);
142		}
143	}
144}
145
146static void
147configurerequest(XEvent *e) {
148	unsigned long newmask;
149	Client *c;
150	XConfigureRequestEvent *ev = &e->xconfigurerequest;
151	XWindowChanges wc;
152
153	if((c = getclient(ev->window))) {
154		c->ismax = False;
155		gravitate(c, True);
156		if(ev->value_mask & CWX)
157			c->x = ev->x;
158		if(ev->value_mask & CWY)
159			c->y = ev->y;
160		if(ev->value_mask & CWWidth)
161			c->w = ev->width;
162		if(ev->value_mask & CWHeight)
163			c->h = ev->height;
164		if(ev->value_mask & CWBorderWidth)
165			c->border = ev->border_width;
166		gravitate(c, False);
167		wc.x = c->x;
168		wc.y = c->y;
169		wc.width = c->w;
170		wc.height = c->h;
171		newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
172		if(newmask)
173			XConfigureWindow(dpy, c->win, newmask, &wc);
174		else
175			configure(c);
176		XSync(dpy, False);
177		if(c->isfloat) {
178			resize(c, False, TopLeft);
179			if(!isvisible(c))
180				ban(c);
181		}
182		else
183			arrange(NULL);
184	}
185	else {
186		wc.x = ev->x;
187		wc.y = ev->y;
188		wc.width = ev->width;
189		wc.height = ev->height;
190		wc.border_width = ev->border_width;
191		wc.sibling = ev->above;
192		wc.stack_mode = ev->detail;
193		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
194		XSync(dpy, False);
195	}
196}
197
198static void
199destroynotify(XEvent *e) {
200	Client *c;
201	XDestroyWindowEvent *ev = &e->xdestroywindow;
202
203	if((c = getclient(ev->window)))
204		unmanage(c);
205}
206
207static void
208enternotify(XEvent *e) {
209	Client *c;
210	XCrossingEvent *ev = &e->xcrossing;
211
212	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
213		return;
214
215	if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
216		focus(c);
217	else if(ev->window == root) {
218		issel = True;
219		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
220		drawall();
221	}
222}
223
224static void
225expose(XEvent *e) {
226	Client *c;
227	XExposeEvent *ev = &e->xexpose;
228
229	if(ev->count == 0) {
230		if(barwin == ev->window)
231			drawstatus();
232		else if((c = getctitle(ev->window)))
233			drawtitle(c);
234	}
235}
236
237static void
238keypress(XEvent *e) {
239	static unsigned int len = sizeof(key) / sizeof(key[0]);
240	unsigned int i;
241	KeySym keysym;
242	XKeyEvent *ev = &e->xkey;
243
244	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
245	for(i = 0; i < len; i++) {
246		if(keysym == key[i].keysym
247			&& CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
248		{
249			if(key[i].func)
250				key[i].func(&key[i].arg);
251			return;
252		}
253	}
254}
255
256static void
257leavenotify(XEvent *e) {
258	XCrossingEvent *ev = &e->xcrossing;
259
260	if((ev->window == root) && !ev->same_screen) {
261		issel = False;
262		drawall();
263	}
264}
265
266static void
267mappingnotify(XEvent *e) {
268	XMappingEvent *ev = &e->xmapping;
269
270	XRefreshKeyboardMapping(ev);
271	if(ev->request == MappingKeyboard)
272		grabkeys();
273}
274
275static void
276maprequest(XEvent *e) {
277	static XWindowAttributes wa;
278	XMapRequestEvent *ev = &e->xmaprequest;
279
280	if(!XGetWindowAttributes(dpy, ev->window, &wa))
281		return;
282
283	if(wa.override_redirect) {
284		XSelectInput(dpy, ev->window,
285				(StructureNotifyMask | PropertyChangeMask));
286		return;
287	}
288
289	if(!getclient(ev->window))
290		manage(ev->window, &wa);
291}
292
293static void
294propertynotify(XEvent *e) {
295	Client *c;
296	Window trans;
297	XPropertyEvent *ev = &e->xproperty;
298
299	if(ev->state == PropertyDelete)
300		return; /* ignore */
301
302	if((c = getclient(ev->window))) {
303		if(ev->atom == wmatom[WMProtocols]) {
304			c->proto = getproto(c->win);
305			return;
306		}
307		switch (ev->atom) {
308			default: break;
309			case XA_WM_TRANSIENT_FOR:
310				XGetTransientForHint(dpy, c->win, &trans);
311				if(!c->isfloat && (c->isfloat = (trans != 0)))
312					arrange(NULL);
313				break;
314			case XA_WM_NORMAL_HINTS:
315				updatesize(c);
316				break;
317		}
318		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
319			updatetitle(c);
320			resizetitle(c);
321			drawtitle(c);
322		}
323	}
324}
325
326static void
327unmapnotify(XEvent *e) {
328	Client *c;
329	XUnmapEvent *ev = &e->xunmap;
330
331	if((c = getclient(ev->window)))
332		unmanage(c);
333}
334
335/* extern */
336
337void (*handler[LASTEvent]) (XEvent *) = {
338	[ButtonPress] = buttonpress,
339	[ConfigureRequest] = configurerequest,
340	[DestroyNotify] = destroynotify,
341	[EnterNotify] = enternotify,
342	[LeaveNotify] = leavenotify,
343	[Expose] = expose,
344	[KeyPress] = keypress,
345	[MappingNotify] = mappingnotify,
346	[MapRequest] = maprequest,
347	[PropertyNotify] = propertynotify,
348	[UnmapNotify] = unmapnotify
349};
350
351void
352grabkeys(void) {
353	static unsigned int len = sizeof(key) / sizeof(key[0]);
354	unsigned int i;
355	KeyCode code;
356
357	XUngrabKey(dpy, AnyKey, AnyModifier, root);
358	for(i = 0; i < len; i++) {
359		code = XKeysymToKeycode(dpy, key[i].keysym);
360		XGrabKey(dpy, code, key[i].mod, root, True,
361				GrabModeAsync, GrabModeAsync);
362		XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
363				GrabModeAsync, GrabModeAsync);
364		XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
365				GrabModeAsync, GrabModeAsync);
366		XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
367				GrabModeAsync, GrabModeAsync);
368	}
369}
370
371void
372procevent(void) {
373	XEvent ev;
374
375	while(XPending(dpy)) {
376		XNextEvent(dpy, &ev);
377		if(handler[ev.type])
378			(handler[ev.type])(&ev); /* call handler */
379	}
380}