event.c (view raw)
1/* (C)opyright MMVI-MMVII 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, nx, ny;
26 unsigned int dui;
27 Window dummy;
28 XEvent ev;
29
30 ocx = nx = c->x;
31 ocy = ny = 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 | SubstructureRedirectMask, &ev);
39 switch (ev.type) {
40 case ButtonRelease:
41 XUngrabPointer(dpy, CurrentTime);
42 return;
43 case ConfigureRequest:
44 case Expose:
45 case MapRequest:
46 handler[ev.type](&ev);
47 break;
48 case MotionNotify:
49 XSync(dpy, False);
50 nx = ocx + (ev.xmotion.x - x1);
51 ny = ocy + (ev.xmotion.y - y1);
52 if(abs(wax + nx) < SNAP)
53 nx = wax;
54 else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
55 nx = wax + waw - c->w - 2 * c->border;
56 if(abs(way - ny) < SNAP)
57 ny = way;
58 else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
59 ny = way + wah - c->h - 2 * c->border;
60 resize(c, nx, ny, c->w, c->h, False);
61 break;
62 }
63 }
64}
65
66static void
67resizemouse(Client *c) {
68 int ocx, ocy;
69 int nw, nh;
70 XEvent ev;
71
72 ocx = c->x;
73 ocy = c->y;
74 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
75 None, cursor[CurResize], CurrentTime) != GrabSuccess)
76 return;
77 c->ismax = False;
78 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
79 for(;;) {
80 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
81 switch(ev.type) {
82 case ButtonRelease:
83 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
84 c->w + c->border - 1, c->h + c->border - 1);
85 XUngrabPointer(dpy, CurrentTime);
86 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
87 return;
88 case ConfigureRequest:
89 case Expose:
90 case MapRequest:
91 handler[ev.type](&ev);
92 break;
93 case MotionNotify:
94 XSync(dpy, False);
95 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
96 nw = 1;
97 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
98 nh = 1;
99 resize(c, c->x, c->y, nw, nh, True);
100 break;
101 }
102 }
103}
104
105static void
106buttonpress(XEvent *e) {
107 int x;
108 Arg a;
109 Client *c;
110 XButtonPressedEvent *ev = &e->xbutton;
111
112 if(barwin == ev->window) {
113 x = 0;
114 for(a.i = 0; a.i < ntags; a.i++) {
115 x += textw(tags[a.i]);
116 if(ev->x < x) {
117 if(ev->button == Button1) {
118 if(ev->state & MODKEY)
119 tag(&a);
120 else
121 view(&a);
122 }
123 else if(ev->button == Button3) {
124 if(ev->state & MODKEY)
125 toggletag(&a);
126 else
127 toggleview(&a);
128 }
129 return;
130 }
131 }
132 if(ev->x < x + bmw)
133 switch(ev->button) {
134 case Button1:
135 togglemode(NULL);
136 break;
137 case Button4:
138 a.i = 1;
139 incnmaster(&a);
140 break;
141 case Button5:
142 a.i = -1;
143 incnmaster(&a);
144 break;
145 }
146 }
147 else if((c = getclient(ev->window))) {
148 focus(c);
149 if(CLEANMASK(ev->state) != MODKEY)
150 return;
151 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
152 restack();
153 movemouse(c);
154 }
155 else if(ev->button == Button2)
156 zoom(NULL);
157 else if(ev->button == Button3
158 && (arrange == dofloat || c->isfloat) && !c->isfixed)
159 {
160 restack();
161 resizemouse(c);
162 }
163 }
164}
165
166static void
167configurerequest(XEvent *e) {
168 Client *c;
169 XConfigureRequestEvent *ev = &e->xconfigurerequest;
170 XWindowChanges wc;
171
172 if((c = getclient(ev->window))) {
173 c->ismax = False;
174 if(ev->value_mask & CWBorderWidth)
175 c->border = ev->border_width;
176 if(c->isfixed || c->isfloat || (arrange == dofloat)) {
177 if(ev->value_mask & CWX)
178 c->x = ev->x;
179 if(ev->value_mask & CWY)
180 c->y = ev->y;
181 if(ev->value_mask & CWWidth)
182 c->w = ev->width;
183 if(ev->value_mask & CWHeight)
184 c->h = ev->height;
185 if((ev->value_mask & (CWX | CWY))
186 && !(ev->value_mask & (CWWidth | CWHeight)))
187 configure(c);
188 if(isvisible(c))
189 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
190 }
191 else
192 configure(c);
193 }
194 else {
195 wc.x = ev->x;
196 wc.y = ev->y;
197 wc.width = ev->width;
198 wc.height = ev->height;
199 wc.border_width = ev->border_width;
200 wc.sibling = ev->above;
201 wc.stack_mode = ev->detail;
202 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
203 }
204 XSync(dpy, False);
205}
206
207static void
208destroynotify(XEvent *e) {
209 Client *c;
210 XDestroyWindowEvent *ev = &e->xdestroywindow;
211
212 if((c = getclient(ev->window)))
213 unmanage(c);
214}
215
216static void
217enternotify(XEvent *e) {
218 Client *c;
219 XCrossingEvent *ev = &e->xcrossing;
220
221 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
222 return;
223 if((c = getclient(ev->window)) && isvisible(c))
224 focus(c);
225 else if(ev->window == root) {
226 selscreen = True;
227 for(c = stack; c && !isvisible(c); c = c->snext);
228 focus(c);
229 }
230}
231
232static void
233expose(XEvent *e) {
234 XExposeEvent *ev = &e->xexpose;
235
236 if(ev->count == 0) {
237 if(barwin == ev->window)
238 drawstatus();
239 }
240}
241
242static void
243keypress(XEvent *e) {
244 static unsigned int len = sizeof key / sizeof key[0];
245 unsigned int i;
246 KeySym keysym;
247 XKeyEvent *ev = &e->xkey;
248
249 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
250 for(i = 0; i < len; i++)
251 if(keysym == key[i].keysym
252 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
253 {
254 if(key[i].func)
255 key[i].func(&key[i].arg);
256 }
257}
258
259static void
260leavenotify(XEvent *e) {
261 XCrossingEvent *ev = &e->xcrossing;
262
263 if((ev->window == root) && !ev->same_screen) {
264 selscreen = False;
265 focus(NULL);
266 }
267}
268
269static void
270mappingnotify(XEvent *e) {
271 XMappingEvent *ev = &e->xmapping;
272
273 XRefreshKeyboardMapping(ev);
274 if(ev->request == MappingKeyboard)
275 grabkeys();
276}
277
278static void
279maprequest(XEvent *e) {
280 static XWindowAttributes wa;
281 XMapRequestEvent *ev = &e->xmaprequest;
282
283 if(!XGetWindowAttributes(dpy, ev->window, &wa))
284 return;
285 if(wa.override_redirect)
286 return;
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 switch (ev->atom) {
301 default: break;
302 case XA_WM_TRANSIENT_FOR:
303 XGetTransientForHint(dpy, c->win, &trans);
304 if(!c->isfloat && (c->isfloat = (trans != 0)))
305 arrange();
306 break;
307 case XA_WM_NORMAL_HINTS:
308 updatesizehints(c);
309 break;
310 }
311 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
312 updatetitle(c);
313 if(c == sel)
314 drawstatus();
315 }
316 }
317}
318
319static void
320unmapnotify(XEvent *e) {
321 Client *c;
322 XUnmapEvent *ev = &e->xunmap;
323
324 if((c = getclient(ev->window)))
325 unmanage(c);
326}
327
328/* extern */
329
330void (*handler[LASTEvent]) (XEvent *) = {
331 [ButtonPress] = buttonpress,
332 [ConfigureRequest] = configurerequest,
333 [DestroyNotify] = destroynotify,
334 [EnterNotify] = enternotify,
335 [LeaveNotify] = leavenotify,
336 [Expose] = expose,
337 [KeyPress] = keypress,
338 [MappingNotify] = mappingnotify,
339 [MapRequest] = maprequest,
340 [PropertyNotify] = propertynotify,
341 [UnmapNotify] = unmapnotify
342};
343
344void
345grabkeys(void) {
346 static unsigned int len = sizeof key / sizeof key[0];
347 unsigned int i;
348 KeyCode code;
349
350 XUngrabKey(dpy, AnyKey, AnyModifier, root);
351 for(i = 0; i < len; i++) {
352 code = XKeysymToKeycode(dpy, key[i].keysym);
353 XGrabKey(dpy, code, key[i].mod, root, True,
354 GrabModeAsync, GrabModeAsync);
355 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
356 GrabModeAsync, GrabModeAsync);
357 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
358 GrabModeAsync, GrabModeAsync);
359 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
360 GrabModeAsync, GrabModeAsync);
361 }
362}
363
364void
365procevent(void) {
366 XEvent ev;
367
368 while(XPending(dpy)) {
369 XNextEvent(dpy, &ev);
370 if(handler[ev.type])
371 (handler[ev.type])(&ev); /* call handler */
372 }
373}