event.c (view raw)
1/* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4#include "dwm.h"
5#include <stdlib.h>
6#include <X11/keysym.h>
7#include <X11/Xatom.h>
8
9/* static */
10
11typedef struct {
12 unsigned long mod;
13 KeySym keysym;
14 void (*func)(Arg *arg);
15 Arg arg;
16} Key;
17
18KEYS
19
20#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
21#define MOUSEMASK (BUTTONMASK | PointerMotionMask)
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();
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 if(((c = getclient(ev->window)) || (c = getctitle(ev->window))) && isvisible(c))
215 focus(c);
216 else if(ev->window == root) {
217 issel = True;
218 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
219 drawall();
220 }
221}
222
223static void
224expose(XEvent *e) {
225 Client *c;
226 XExposeEvent *ev = &e->xexpose;
227
228 if(ev->count == 0) {
229 if(barwin == ev->window)
230 drawstatus();
231 else if((c = getctitle(ev->window)))
232 drawtitle(c);
233 }
234}
235
236static void
237keypress(XEvent *e) {
238 static unsigned int len = sizeof(key) / sizeof(key[0]);
239 unsigned int i;
240 KeySym keysym;
241 XKeyEvent *ev = &e->xkey;
242
243 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
244 for(i = 0; i < len; i++) {
245 if(keysym == key[i].keysym
246 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
247 {
248 if(key[i].func)
249 key[i].func(&key[i].arg);
250 return;
251 }
252 }
253}
254
255static void
256leavenotify(XEvent *e) {
257 XCrossingEvent *ev = &e->xcrossing;
258
259 if((ev->window == root) && !ev->same_screen) {
260 issel = False;
261 drawall();
262 }
263}
264
265static void
266mappingnotify(XEvent *e) {
267 XMappingEvent *ev = &e->xmapping;
268
269 XRefreshKeyboardMapping(ev);
270 if(ev->request == MappingKeyboard)
271 grabkeys();
272}
273
274static void
275maprequest(XEvent *e) {
276 static XWindowAttributes wa;
277 XMapRequestEvent *ev = &e->xmaprequest;
278
279 if(!XGetWindowAttributes(dpy, ev->window, &wa))
280 return;
281 if(wa.override_redirect) {
282 XSelectInput(dpy, ev->window,
283 (StructureNotifyMask | PropertyChangeMask));
284 return;
285 }
286 if(!getclient(ev->window))
287 manage(ev->window, &wa);
288}
289
290static void
291propertynotify(XEvent *e) {
292 Client *c;
293 Window trans;
294 XPropertyEvent *ev = &e->xproperty;
295
296 if(ev->state == PropertyDelete)
297 return; /* ignore */
298 if((c = getclient(ev->window))) {
299 if(ev->atom == wmatom[WMProtocols]) {
300 c->proto = getproto(c->win);
301 return;
302 }
303 switch (ev->atom) {
304 default: break;
305 case XA_WM_TRANSIENT_FOR:
306 XGetTransientForHint(dpy, c->win, &trans);
307 if(!c->isfloat && (c->isfloat = (trans != 0)))
308 arrange();
309 break;
310 case XA_WM_NORMAL_HINTS:
311 updatesize(c);
312 break;
313 }
314 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
315 updatetitle(c);
316 resizetitle(c);
317 drawtitle(c);
318 }
319 }
320}
321
322static void
323unmapnotify(XEvent *e) {
324 Client *c;
325 XUnmapEvent *ev = &e->xunmap;
326
327 if((c = getclient(ev->window)))
328 unmanage(c);
329}
330
331/* extern */
332
333void (*handler[LASTEvent]) (XEvent *) = {
334 [ButtonPress] = buttonpress,
335 [ConfigureRequest] = configurerequest,
336 [DestroyNotify] = destroynotify,
337 [EnterNotify] = enternotify,
338 [LeaveNotify] = leavenotify,
339 [Expose] = expose,
340 [KeyPress] = keypress,
341 [MappingNotify] = mappingnotify,
342 [MapRequest] = maprequest,
343 [PropertyNotify] = propertynotify,
344 [UnmapNotify] = unmapnotify
345};
346
347void
348grabkeys(void) {
349 static unsigned int len = sizeof(key) / sizeof(key[0]);
350 unsigned int i;
351 KeyCode code;
352
353 XUngrabKey(dpy, AnyKey, AnyModifier, root);
354 for(i = 0; i < len; i++) {
355 code = XKeysymToKeycode(dpy, key[i].keysym);
356 XGrabKey(dpy, code, key[i].mod, root, True,
357 GrabModeAsync, GrabModeAsync);
358 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
359 GrabModeAsync, GrabModeAsync);
360 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
361 GrabModeAsync, GrabModeAsync);
362 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
363 GrabModeAsync, GrabModeAsync);
364 }
365}
366
367void
368procevent(void) {
369 XEvent ev;
370
371 while(XPending(dpy)) {
372 XNextEvent(dpy, &ev);
373 if(handler[ev.type])
374 (handler[ev.type])(&ev); /* call handler */
375 }
376}