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 !c->isfixed) {
141 restack();
142 resizemouse(c);
143 }
144 }
145}
146
147static void
148configurerequest(XEvent *e) {
149 unsigned long newmask;
150 Client *c;
151 XConfigureRequestEvent *ev = &e->xconfigurerequest;
152 XWindowChanges wc;
153
154 if((c = getclient(ev->window))) {
155 c->ismax = False;
156 gravitate(c, True);
157 if(ev->value_mask & CWX)
158 c->x = ev->x;
159 if(ev->value_mask & CWY)
160 c->y = ev->y;
161 if(ev->value_mask & CWWidth)
162 c->w = ev->width;
163 if(ev->value_mask & CWHeight)
164 c->h = ev->height;
165 if(ev->value_mask & CWBorderWidth)
166 c->border = ev->border_width;
167 gravitate(c, False);
168 wc.x = c->x;
169 wc.y = c->y;
170 wc.width = c->w;
171 wc.height = c->h;
172 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
173 if(newmask)
174 XConfigureWindow(dpy, c->win, newmask, &wc);
175 else
176 configure(c);
177 XSync(dpy, False);
178 if(c->isfloat) {
179 resize(c, False, TopLeft);
180 if(!isvisible(c))
181 ban(c);
182 }
183 else
184 arrange();
185 }
186 else {
187 wc.x = ev->x;
188 wc.y = ev->y;
189 wc.width = ev->width;
190 wc.height = ev->height;
191 wc.border_width = ev->border_width;
192 wc.sibling = ev->above;
193 wc.stack_mode = ev->detail;
194 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
195 XSync(dpy, False);
196 }
197}
198
199static void
200destroynotify(XEvent *e) {
201 Client *c;
202 XDestroyWindowEvent *ev = &e->xdestroywindow;
203
204 if((c = getclient(ev->window)))
205 unmanage(c);
206}
207
208static void
209enternotify(XEvent *e) {
210 Client *c;
211 XCrossingEvent *ev = &e->xcrossing;
212
213 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
214 return;
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 if(wa.override_redirect) {
283 XSelectInput(dpy, ev->window,
284 (StructureNotifyMask | PropertyChangeMask));
285 return;
286 }
287 if(!getclient(ev->window))
288 manage(ev->window, &wa);
289}
290
291static void
292propertynotify(XEvent *e) {
293 Client *c;
294 Window trans;
295 XPropertyEvent *ev = &e->xproperty;
296
297 if(ev->state == PropertyDelete)
298 return; /* ignore */
299 if((c = getclient(ev->window))) {
300 if(ev->atom == wmatom[WMProtocols]) {
301 c->proto = getproto(c->win);
302 return;
303 }
304 switch (ev->atom) {
305 default: break;
306 case XA_WM_TRANSIENT_FOR:
307 XGetTransientForHint(dpy, c->win, &trans);
308 if(!c->isfloat && (c->isfloat = (trans != 0)))
309 arrange();
310 break;
311 case XA_WM_NORMAL_HINTS:
312 updatesize(c);
313 break;
314 }
315 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
316 updatetitle(c);
317 resizetitle(c);
318 drawtitle(c);
319 }
320 }
321}
322
323static void
324unmapnotify(XEvent *e) {
325 Client *c;
326 XUnmapEvent *ev = &e->xunmap;
327
328 if((c = getclient(ev->window)))
329 unmanage(c);
330}
331
332/* extern */
333
334void (*handler[LASTEvent]) (XEvent *) = {
335 [ButtonPress] = buttonpress,
336 [ConfigureRequest] = configurerequest,
337 [DestroyNotify] = destroynotify,
338 [EnterNotify] = enternotify,
339 [LeaveNotify] = leavenotify,
340 [Expose] = expose,
341 [KeyPress] = keypress,
342 [MappingNotify] = mappingnotify,
343 [MapRequest] = maprequest,
344 [PropertyNotify] = propertynotify,
345 [UnmapNotify] = unmapnotify
346};
347
348void
349grabkeys(void) {
350 static unsigned int len = sizeof(key) / sizeof(key[0]);
351 unsigned int i;
352 KeyCode code;
353
354 XUngrabKey(dpy, AnyKey, AnyModifier, root);
355 for(i = 0; i < len; i++) {
356 code = XKeysymToKeycode(dpy, key[i].keysym);
357 XGrabKey(dpy, code, key[i].mod, root, True,
358 GrabModeAsync, GrabModeAsync);
359 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
360 GrabModeAsync, GrabModeAsync);
361 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
362 GrabModeAsync, GrabModeAsync);
363 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
364 GrabModeAsync, GrabModeAsync);
365 }
366}
367
368void
369procevent(void) {
370 XEvent ev;
371
372 while(XPending(dpy)) {
373 XNextEvent(dpy, &ev);
374 if(handler[ev.type])
375 (handler[ev.type])(&ev); /* call handler */
376 }
377}