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;
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 | SubstructureRedirectMask, &ev);
39 switch (ev.type) {
40 case ButtonRelease:
41 resize(c, True);
42 XUngrabPointer(dpy, CurrentTime);
43 return;
44 case ConfigureRequest:
45 case Expose:
46 case MapRequest:
47 handler[ev.type](&ev);
48 break;
49 case MotionNotify:
50 XSync(dpy, False);
51 c->x = ocx + (ev.xmotion.x - x1);
52 c->y = ocy + (ev.xmotion.y - y1);
53 if(abs(wax + c->x) < SNAP)
54 c->x = wax;
55 else if(abs((wax + waw) - (c->x + c->w + 2 * c->border)) < SNAP)
56 c->x = wax + waw - c->w - 2 * c->border;
57 if(abs(way - c->y) < SNAP)
58 c->y = way;
59 else if(abs((way + wah) - (c->y + c->h + 2 * c->border)) < SNAP)
60 c->y = way + wah - c->h - 2 * c->border;
61 resize(c, False);
62 break;
63 }
64 }
65}
66
67static void
68resizemouse(Client *c) {
69 int ocx, ocy;
70 int nw, nh;
71 XEvent ev;
72
73 ocx = c->x;
74 ocy = c->y;
75 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
76 None, cursor[CurResize], CurrentTime) != GrabSuccess)
77 return;
78 c->ismax = False;
79 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
80 for(;;) {
81 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
82 switch(ev.type) {
83 case ButtonRelease:
84 resize(c, True);
85 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
86 c->w + c->border - 1, c->h + c->border - 1);
87 XUngrabPointer(dpy, CurrentTime);
88 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
89 return;
90 case ConfigureRequest:
91 case Expose:
92 case MapRequest:
93 handler[ev.type](&ev);
94 break;
95 case MotionNotify:
96 XSync(dpy, False);
97 nw = ev.xmotion.x - ocx - 2 * c->border + 1;
98 c->w = nw > 0 ? nw : 1;
99 nh = ev.xmotion.y - ocy - 2 * c->border + 1;
100 c->h = nh > 0 ? nh : 1;
101 resize(c, True);
102 break;
103 }
104 }
105}
106
107static void
108buttonpress(XEvent *e) {
109 int x;
110 Arg a;
111 Client *c;
112 XButtonPressedEvent *ev = &e->xbutton;
113
114 if(barwin == ev->window) {
115 x = 0;
116 for(a.i = 0; a.i < ntags; a.i++) {
117 x += textw(tags[a.i]);
118 if(ev->x < x) {
119 if(ev->button == Button1) {
120 if(ev->state & MODKEY)
121 tag(&a);
122 else
123 view(&a);
124 }
125 else if(ev->button == Button3) {
126 if(ev->state & MODKEY)
127 toggletag(&a);
128 else
129 toggleview(&a);
130 }
131 return;
132 }
133 }
134 if(ev->x < x + bmw)
135 switch(ev->button) {
136 case Button1:
137 togglemode(NULL);
138 break;
139 case Button4:
140 a.i = 1;
141 incnmaster(&a);
142 break;
143 case Button5:
144 a.i = -1;
145 incnmaster(&a);
146 break;
147 }
148 }
149 else if((c = getclient(ev->window))) {
150 focus(c);
151 if(CLEANMASK(ev->state) != MODKEY)
152 return;
153 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
154 restack();
155 movemouse(c);
156 }
157 else if(ev->button == Button2)
158 zoom(NULL);
159 else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)
160 && !c->isfixed)
161 {
162 restack();
163 resizemouse(c);
164 }
165 }
166}
167
168static void
169configurerequest(XEvent *e) {
170 Client *c;
171 XConfigureRequestEvent *ev = &e->xconfigurerequest;
172 XWindowChanges wc;
173
174 if((c = getclient(ev->window))) {
175 c->ismax = False;
176 if(ev->value_mask & CWBorderWidth)
177 c->border = ev->border_width;
178 if(c->isfixed || c->isfloat || (arrange == dofloat)) {
179 if(ev->value_mask & CWX)
180 c->x = ev->x;
181 if(ev->value_mask & CWY)
182 c->y = ev->y;
183 if(ev->value_mask & CWWidth)
184 c->w = ev->width;
185 if(ev->value_mask & CWHeight)
186 c->h = ev->height;
187 if((ev->value_mask & (CWX | CWY)) && !(ev->value_mask & (CWWidth | CWHeight)))
188 configure(c);
189 resize(c, False);
190 if(!isvisible(c))
191 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
192 }
193 else
194 configure(c);
195 }
196 else {
197 wc.x = ev->x;
198 wc.y = ev->y;
199 wc.width = ev->width;
200 wc.height = ev->height;
201 wc.border_width = ev->border_width;
202 wc.sibling = ev->above;
203 wc.stack_mode = ev->detail;
204 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
205 }
206 XSync(dpy, False);
207}
208
209static void
210destroynotify(XEvent *e) {
211 Client *c;
212 XDestroyWindowEvent *ev = &e->xdestroywindow;
213
214 if((c = getclient(ev->window)))
215 unmanage(c);
216}
217
218static void
219enternotify(XEvent *e) {
220 Client *c;
221 XCrossingEvent *ev = &e->xcrossing;
222
223 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
224 return;
225 if((c = getclient(ev->window)) && isvisible(c))
226 focus(c);
227 else if(ev->window == root) {
228 selscreen = True;
229 for(c = stack; c && !isvisible(c); c = c->snext);
230 focus(c);
231 }
232}
233
234static void
235expose(XEvent *e) {
236 XExposeEvent *ev = &e->xexpose;
237
238 if(ev->count == 0) {
239 if(barwin == ev->window)
240 drawstatus();
241 }
242}
243
244static void
245keypress(XEvent *e) {
246 static unsigned int len = sizeof key / sizeof key[0];
247 unsigned int i;
248 KeySym keysym;
249 XKeyEvent *ev = &e->xkey;
250
251 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
252 for(i = 0; i < len; i++) {
253 if(keysym == key[i].keysym
254 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
255 {
256 if(key[i].func)
257 key[i].func(&key[i].arg);
258 }
259 }
260}
261
262static void
263leavenotify(XEvent *e) {
264 XCrossingEvent *ev = &e->xcrossing;
265
266 if((ev->window == root) && !ev->same_screen) {
267 selscreen = False;
268 focus(NULL);
269 }
270}
271
272static void
273mappingnotify(XEvent *e) {
274 XMappingEvent *ev = &e->xmapping;
275
276 XRefreshKeyboardMapping(ev);
277 if(ev->request == MappingKeyboard)
278 grabkeys();
279}
280
281static void
282maprequest(XEvent *e) {
283 static XWindowAttributes wa;
284 XMapRequestEvent *ev = &e->xmaprequest;
285
286 if(!XGetWindowAttributes(dpy, ev->window, &wa))
287 return;
288 if(wa.override_redirect)
289 return;
290 if(!getclient(ev->window))
291 manage(ev->window, &wa);
292}
293
294static void
295propertynotify(XEvent *e) {
296 Client *c;
297 Window trans;
298 XPropertyEvent *ev = &e->xproperty;
299
300 if(ev->state == PropertyDelete)
301 return; /* ignore */
302 if((c = getclient(ev->window))) {
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 updatesizehints(c);
312 break;
313 }
314 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
315 updatetitle(c);
316 if(c == sel)
317 drawstatus();
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}