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 {
188 configure(c);
189 if(isvisible(c))
190 XMoveWindow(dpy, c->win, c->x, c->y);
191 }
192 else {
193 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
194 if(!isvisible(c))
195 ban(c);
196 }
197 }
198 else
199 configure(c);
200 }
201 else {
202 wc.x = ev->x;
203 wc.y = ev->y;
204 wc.width = ev->width;
205 wc.height = ev->height;
206 wc.border_width = ev->border_width;
207 wc.sibling = ev->above;
208 wc.stack_mode = ev->detail;
209 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
210 }
211 XSync(dpy, False);
212}
213
214static void
215destroynotify(XEvent *e) {
216 Client *c;
217 XDestroyWindowEvent *ev = &e->xdestroywindow;
218
219 if((c = getclient(ev->window)))
220 unmanage(c);
221}
222
223static void
224enternotify(XEvent *e) {
225 Client *c;
226 XCrossingEvent *ev = &e->xcrossing;
227
228 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
229 return;
230 if((c = getclient(ev->window)) && isvisible(c))
231 focus(c);
232 else if(ev->window == root) {
233 selscreen = True;
234 for(c = stack; c && !isvisible(c); c = c->snext);
235 focus(c);
236 }
237}
238
239static void
240expose(XEvent *e) {
241 XExposeEvent *ev = &e->xexpose;
242
243 if(ev->count == 0) {
244 if(barwin == ev->window)
245 drawstatus();
246 }
247}
248
249static void
250keypress(XEvent *e) {
251 static unsigned int len = sizeof key / sizeof key[0];
252 unsigned int i;
253 KeySym keysym;
254 XKeyEvent *ev = &e->xkey;
255
256 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
257 for(i = 0; i < len; i++)
258 if(keysym == key[i].keysym
259 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
260 {
261 if(key[i].func)
262 key[i].func(&key[i].arg);
263 }
264}
265
266static void
267leavenotify(XEvent *e) {
268 XCrossingEvent *ev = &e->xcrossing;
269
270 if((ev->window == root) && !ev->same_screen) {
271 selscreen = False;
272 focus(NULL);
273 }
274}
275
276static void
277mappingnotify(XEvent *e) {
278 XMappingEvent *ev = &e->xmapping;
279
280 XRefreshKeyboardMapping(ev);
281 if(ev->request == MappingKeyboard)
282 grabkeys();
283}
284
285static void
286maprequest(XEvent *e) {
287 static XWindowAttributes wa;
288 XMapRequestEvent *ev = &e->xmaprequest;
289
290 if(!XGetWindowAttributes(dpy, ev->window, &wa))
291 return;
292 if(wa.override_redirect)
293 return;
294 if(!getclient(ev->window))
295 manage(ev->window, &wa);
296}
297
298static void
299propertynotify(XEvent *e) {
300 Client *c;
301 Window trans;
302 XPropertyEvent *ev = &e->xproperty;
303
304 if(ev->state == PropertyDelete)
305 return; /* ignore */
306 if((c = getclient(ev->window))) {
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();
313 break;
314 case XA_WM_NORMAL_HINTS:
315 updatesizehints(c);
316 break;
317 }
318 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
319 updatetitle(c);
320 if(c == sel)
321 drawstatus();
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}