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 resize(c, c->x, c->y, c->w, c->h, False);
189 if(!isvisible(c))
190 ban(c);
191 }
192 else
193 configure(c);
194 }
195 else {
196 wc.x = ev->x;
197 wc.y = ev->y;
198 wc.width = ev->width;
199 wc.height = ev->height;
200 wc.border_width = ev->border_width;
201 wc.sibling = ev->above;
202 wc.stack_mode = ev->detail;
203 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
204 }
205 XSync(dpy, False);
206}
207
208static void
209destroynotify(XEvent *e) {
210 Client *c;
211 XDestroyWindowEvent *ev = &e->xdestroywindow;
212
213 if((c = getclient(ev->window)))
214 unmanage(c);
215}
216
217static void
218enternotify(XEvent *e) {
219 Client *c;
220 XCrossingEvent *ev = &e->xcrossing;
221
222 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
223 return;
224 if((c = getclient(ev->window)) && isvisible(c))
225 focus(c);
226 else if(ev->window == root) {
227 selscreen = True;
228 for(c = stack; c && !isvisible(c); c = c->snext);
229 focus(c);
230 }
231}
232
233static void
234expose(XEvent *e) {
235 XExposeEvent *ev = &e->xexpose;
236
237 if(ev->count == 0) {
238 if(barwin == ev->window)
239 drawstatus();
240 }
241}
242
243static void
244keypress(XEvent *e) {
245 static unsigned int len = sizeof key / sizeof key[0];
246 unsigned int i;
247 KeySym keysym;
248 XKeyEvent *ev = &e->xkey;
249
250 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
251 for(i = 0; i < len; i++)
252 if(keysym == key[i].keysym
253 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
254 {
255 if(key[i].func)
256 key[i].func(&key[i].arg);
257 }
258}
259
260static void
261leavenotify(XEvent *e) {
262 XCrossingEvent *ev = &e->xcrossing;
263
264 if((ev->window == root) && !ev->same_screen) {
265 selscreen = False;
266 focus(NULL);
267 }
268}
269
270static void
271mappingnotify(XEvent *e) {
272 XMappingEvent *ev = &e->xmapping;
273
274 XRefreshKeyboardMapping(ev);
275 if(ev->request == MappingKeyboard)
276 grabkeys();
277}
278
279static void
280maprequest(XEvent *e) {
281 static XWindowAttributes wa;
282 XMapRequestEvent *ev = &e->xmaprequest;
283
284 if(!XGetWindowAttributes(dpy, ev->window, &wa))
285 return;
286 if(wa.override_redirect)
287 return;
288 if(!getclient(ev->window))
289 manage(ev->window, &wa);
290}
291
292static void
293propertynotify(XEvent *e) {
294 Client *c;
295 Window trans;
296 XPropertyEvent *ev = &e->xproperty;
297
298 if(ev->state == PropertyDelete)
299 return; /* ignore */
300 if((c = getclient(ev->window))) {
301 switch (ev->atom) {
302 default: break;
303 case XA_WM_TRANSIENT_FOR:
304 XGetTransientForHint(dpy, c->win, &trans);
305 if(!c->isfloat && (c->isfloat = (trans != 0)))
306 arrange();
307 break;
308 case XA_WM_NORMAL_HINTS:
309 updatesizehints(c);
310 break;
311 }
312 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
313 updatetitle(c);
314 if(c == sel)
315 drawstatus();
316 }
317 }
318}
319
320static void
321unmapnotify(XEvent *e) {
322 Client *c;
323 XUnmapEvent *ev = &e->xunmap;
324
325 if((c = getclient(ev->window)))
326 unmanage(c);
327}
328
329/* extern */
330
331void (*handler[LASTEvent]) (XEvent *) = {
332 [ButtonPress] = buttonpress,
333 [ConfigureRequest] = configurerequest,
334 [DestroyNotify] = destroynotify,
335 [EnterNotify] = enternotify,
336 [LeaveNotify] = leavenotify,
337 [Expose] = expose,
338 [KeyPress] = keypress,
339 [MappingNotify] = mappingnotify,
340 [MapRequest] = maprequest,
341 [PropertyNotify] = propertynotify,
342 [UnmapNotify] = unmapnotify
343};
344
345void
346grabkeys(void) {
347 static unsigned int len = sizeof key / sizeof key[0];
348 unsigned int i;
349 KeyCode code;
350
351 XUngrabKey(dpy, AnyKey, AnyModifier, root);
352 for(i = 0; i < len; i++) {
353 code = XKeysymToKeycode(dpy, key[i].keysym);
354 XGrabKey(dpy, code, key[i].mod, root, True,
355 GrabModeAsync, GrabModeAsync);
356 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
357 GrabModeAsync, GrabModeAsync);
358 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
359 GrabModeAsync, GrabModeAsync);
360 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
361 GrabModeAsync, GrabModeAsync);
362 }
363}
364
365void
366procevent(void) {
367 XEvent ev;
368
369 while(XPending(dpy)) {
370 XNextEvent(dpy, &ev);
371 if(handler[ev.type])
372 (handler[ev.type])(&ev); /* call handler */
373 }
374}