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 Client *
24getclient(Window w) {
25 Client *c;
26
27 for(c = clients; c && c->win != w; c = c->next);
28 return c;
29}
30
31static void
32movemouse(Client *c) {
33 int x1, y1, ocx, ocy, di, nx, ny;
34 unsigned int dui;
35 Window dummy;
36 XEvent ev;
37
38 ocx = nx = c->x;
39 ocy = ny = c->y;
40 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
41 None, cursor[CurMove], CurrentTime) != GrabSuccess)
42 return;
43 c->ismax = False;
44 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
45 for(;;) {
46 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
47 switch (ev.type) {
48 case ButtonRelease:
49 XUngrabPointer(dpy, CurrentTime);
50 return;
51 case ConfigureRequest:
52 case Expose:
53 case MapRequest:
54 handler[ev.type](&ev);
55 break;
56 case MotionNotify:
57 XSync(dpy, False);
58 nx = ocx + (ev.xmotion.x - x1);
59 ny = ocy + (ev.xmotion.y - y1);
60 if(abs(wax + nx) < SNAP)
61 nx = wax;
62 else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
63 nx = wax + waw - c->w - 2 * c->border;
64 if(abs(way - ny) < SNAP)
65 ny = way;
66 else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
67 ny = way + wah - c->h - 2 * c->border;
68 resize(c, nx, ny, c->w, c->h, False);
69 break;
70 }
71 }
72}
73
74static void
75resizemouse(Client *c) {
76 int ocx, ocy;
77 int nw, nh;
78 XEvent ev;
79
80 ocx = c->x;
81 ocy = c->y;
82 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
83 None, cursor[CurResize], CurrentTime) != GrabSuccess)
84 return;
85 c->ismax = False;
86 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
87 for(;;) {
88 XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
89 switch(ev.type) {
90 case ButtonRelease:
91 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
92 c->w + c->border - 1, c->h + c->border - 1);
93 XUngrabPointer(dpy, CurrentTime);
94 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
95 return;
96 case ConfigureRequest:
97 case Expose:
98 case MapRequest:
99 handler[ev.type](&ev);
100 break;
101 case MotionNotify:
102 XSync(dpy, False);
103 if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
104 nw = 1;
105 if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
106 nh = 1;
107 resize(c, c->x, c->y, nw, nh, True);
108 break;
109 }
110 }
111}
112
113static void
114buttonpress(XEvent *e) {
115 int x;
116 Arg a;
117 Client *c;
118 XButtonPressedEvent *ev = &e->xbutton;
119
120 if(barwin == ev->window) {
121 x = 0;
122 for(a.i = 0; a.i < ntags; a.i++) {
123 x += textw(tags[a.i]);
124 if(ev->x < x) {
125 if(ev->button == Button1) {
126 if(ev->state & MODKEY)
127 tag(&a);
128 else
129 view(&a);
130 }
131 else if(ev->button == Button3) {
132 if(ev->state & MODKEY)
133 toggletag(&a);
134 else
135 toggleview(&a);
136 }
137 return;
138 }
139 }
140 if(ev->x < x + bmw)
141 switch(ev->button) {
142 case Button1:
143 togglemode(NULL);
144 break;
145 case Button4:
146 a.i = 1;
147 incnmaster(&a);
148 break;
149 case Button5:
150 a.i = -1;
151 incnmaster(&a);
152 break;
153 }
154 }
155 else if((c = getclient(ev->window))) {
156 focus(c);
157 if(CLEANMASK(ev->state) != MODKEY)
158 return;
159 if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
160 restack();
161 movemouse(c);
162 }
163 else if(ev->button == Button2)
164 zoom(NULL);
165 else if(ev->button == Button3
166 && (arrange == dofloat || c->isfloat) && !c->isfixed)
167 {
168 restack();
169 resizemouse(c);
170 }
171 }
172}
173
174static void
175configurerequest(XEvent *e) {
176 Client *c;
177 XConfigureRequestEvent *ev = &e->xconfigurerequest;
178 XWindowChanges wc;
179
180 if((c = getclient(ev->window))) {
181 c->ismax = False;
182 if(ev->value_mask & CWBorderWidth)
183 c->border = ev->border_width;
184 if(c->isfixed || c->isfloat || (arrange == dofloat)) {
185 if(ev->value_mask & CWX)
186 c->x = ev->x;
187 if(ev->value_mask & CWY)
188 c->y = ev->y;
189 if(ev->value_mask & CWWidth)
190 c->w = ev->width;
191 if(ev->value_mask & CWHeight)
192 c->h = ev->height;
193 if((ev->value_mask & (CWX | CWY))
194 && !(ev->value_mask & (CWWidth | CWHeight)))
195 configure(c);
196 if(isvisible(c))
197 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
198 }
199 else
200 configure(c);
201 }
202 else {
203 wc.x = ev->x;
204 wc.y = ev->y;
205 wc.width = ev->width;
206 wc.height = ev->height;
207 wc.border_width = ev->border_width;
208 wc.sibling = ev->above;
209 wc.stack_mode = ev->detail;
210 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
211 }
212 XSync(dpy, False);
213}
214
215static void
216destroynotify(XEvent *e) {
217 Client *c;
218 XDestroyWindowEvent *ev = &e->xdestroywindow;
219
220 if((c = getclient(ev->window)))
221 unmanage(c);
222}
223
224static void
225enternotify(XEvent *e) {
226 Client *c;
227 XCrossingEvent *ev = &e->xcrossing;
228
229 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
230 return;
231 if((c = getclient(ev->window)) && isvisible(c))
232 focus(c);
233 else if(ev->window == root) {
234 selscreen = True;
235 for(c = stack; c && !isvisible(c); c = c->snext);
236 focus(c);
237 }
238}
239
240static void
241expose(XEvent *e) {
242 XExposeEvent *ev = &e->xexpose;
243
244 if(ev->count == 0) {
245 if(barwin == ev->window)
246 drawstatus();
247 }
248}
249
250static void
251keypress(XEvent *e) {
252 static unsigned int len = sizeof key / sizeof key[0];
253 unsigned int i;
254 KeySym keysym;
255 XKeyEvent *ev = &e->xkey;
256
257 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
258 for(i = 0; i < len; i++)
259 if(keysym == key[i].keysym
260 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
261 {
262 if(key[i].func)
263 key[i].func(&key[i].arg);
264 }
265}
266
267static void
268leavenotify(XEvent *e) {
269 XCrossingEvent *ev = &e->xcrossing;
270
271 if((ev->window == root) && !ev->same_screen) {
272 selscreen = False;
273 focus(NULL);
274 }
275}
276
277static void
278mappingnotify(XEvent *e) {
279 XMappingEvent *ev = &e->xmapping;
280
281 XRefreshKeyboardMapping(ev);
282 if(ev->request == MappingKeyboard)
283 grabkeys();
284}
285
286static void
287maprequest(XEvent *e) {
288 static XWindowAttributes wa;
289 XMapRequestEvent *ev = &e->xmaprequest;
290
291 if(!XGetWindowAttributes(dpy, ev->window, &wa))
292 return;
293 if(wa.override_redirect)
294 return;
295 if(!getclient(ev->window))
296 manage(ev->window, &wa);
297}
298
299static void
300propertynotify(XEvent *e) {
301 Client *c;
302 Window trans;
303 XPropertyEvent *ev = &e->xproperty;
304
305 if(ev->state == PropertyDelete)
306 return; /* ignore */
307 if((c = getclient(ev->window))) {
308 switch (ev->atom) {
309 default: break;
310 case XA_WM_TRANSIENT_FOR:
311 XGetTransientForHint(dpy, c->win, &trans);
312 if(!c->isfloat && (c->isfloat = (trans != 0)))
313 arrange();
314 break;
315 case XA_WM_NORMAL_HINTS:
316 updatesizehints(c);
317 break;
318 }
319 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
320 updatetitle(c);
321 if(c == sel)
322 drawstatus();
323 }
324 }
325}
326
327static void
328unmapnotify(XEvent *e) {
329 Client *c;
330 XUnmapEvent *ev = &e->xunmap;
331
332 if((c = getclient(ev->window)))
333 unmanage(c);
334}
335
336/* extern */
337
338void (*handler[LASTEvent]) (XEvent *) = {
339 [ButtonPress] = buttonpress,
340 [ConfigureRequest] = configurerequest,
341 [DestroyNotify] = destroynotify,
342 [EnterNotify] = enternotify,
343 [LeaveNotify] = leavenotify,
344 [Expose] = expose,
345 [KeyPress] = keypress,
346 [MappingNotify] = mappingnotify,
347 [MapRequest] = maprequest,
348 [PropertyNotify] = propertynotify,
349 [UnmapNotify] = unmapnotify
350};
351
352void
353grabkeys(void) {
354 static unsigned int len = sizeof key / sizeof key[0];
355 unsigned int i;
356 KeyCode code;
357
358 XUngrabKey(dpy, AnyKey, AnyModifier, root);
359 for(i = 0; i < len; i++) {
360 code = XKeysymToKeycode(dpy, key[i].keysym);
361 XGrabKey(dpy, code, key[i].mod, root, True,
362 GrabModeAsync, GrabModeAsync);
363 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
364 GrabModeAsync, GrabModeAsync);
365 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
366 GrabModeAsync, GrabModeAsync);
367 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
368 GrabModeAsync, GrabModeAsync);
369 }
370}
371
372void
373procevent(void) {
374 XEvent ev;
375
376 while(XPending(dpy)) {
377 XNextEvent(dpy, &ev);
378 if(handler[ev.type])
379 (handler[ev.type])(&ev); /* call handler */
380 }
381}