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 + blw)
141 switch(ev->button) {
142 case Button1:
143 a.i = -1;
144 setlayout(&a);
145 break;
146 case Button4:
147 a.i = 1;
148 incnmaster(&a);
149 break;
150 case Button5:
151 a.i = -1;
152 incnmaster(&a);
153 break;
154 }
155 }
156 else if((c = getclient(ev->window))) {
157 focus(c);
158 if(CLEANMASK(ev->state) != MODKEY)
159 return;
160 if(ev->button == Button1 && (lt->arrange == versatile || c->isversatile)) {
161 restack();
162 movemouse(c);
163 }
164 else if(ev->button == Button2)
165 zoom(NULL);
166 else if(ev->button == Button3
167 && (lt->arrange == versatile || c->isversatile) && !c->isfixed)
168 {
169 restack();
170 resizemouse(c);
171 }
172 }
173}
174
175static void
176configurerequest(XEvent *e) {
177 Client *c;
178 XConfigureRequestEvent *ev = &e->xconfigurerequest;
179 XWindowChanges wc;
180
181 if((c = getclient(ev->window))) {
182 c->ismax = False;
183 if(ev->value_mask & CWBorderWidth)
184 c->border = ev->border_width;
185 if(c->isfixed || c->isversatile || (lt->arrange == versatile)) {
186 if(ev->value_mask & CWX)
187 c->x = ev->x;
188 if(ev->value_mask & CWY)
189 c->y = ev->y;
190 if(ev->value_mask & CWWidth)
191 c->w = ev->width;
192 if(ev->value_mask & CWHeight)
193 c->h = ev->height;
194 if((ev->value_mask & (CWX | CWY))
195 && !(ev->value_mask & (CWWidth | CWHeight)))
196 configure(c);
197 if(isvisible(c))
198 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
199 }
200 else
201 configure(c);
202 }
203 else {
204 wc.x = ev->x;
205 wc.y = ev->y;
206 wc.width = ev->width;
207 wc.height = ev->height;
208 wc.border_width = ev->border_width;
209 wc.sibling = ev->above;
210 wc.stack_mode = ev->detail;
211 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
212 }
213 XSync(dpy, False);
214}
215
216static void
217destroynotify(XEvent *e) {
218 Client *c;
219 XDestroyWindowEvent *ev = &e->xdestroywindow;
220
221 if((c = getclient(ev->window)))
222 unmanage(c);
223}
224
225static void
226enternotify(XEvent *e) {
227 Client *c;
228 XCrossingEvent *ev = &e->xcrossing;
229
230 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
231 return;
232 if((c = getclient(ev->window)) && isvisible(c))
233 focus(c);
234 else if(ev->window == root) {
235 selscreen = True;
236 for(c = stack; c && !isvisible(c); c = c->snext);
237 focus(c);
238 }
239}
240
241static void
242expose(XEvent *e) {
243 XExposeEvent *ev = &e->xexpose;
244
245 if(ev->count == 0) {
246 if(barwin == ev->window)
247 drawstatus();
248 }
249}
250
251static void
252keypress(XEvent *e) {
253 static unsigned int len = sizeof key / sizeof key[0];
254 unsigned int i;
255 KeySym keysym;
256 XKeyEvent *ev = &e->xkey;
257
258 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
259 for(i = 0; i < len; i++)
260 if(keysym == key[i].keysym
261 && CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
262 {
263 if(key[i].func)
264 key[i].func(&key[i].arg);
265 }
266}
267
268static void
269leavenotify(XEvent *e) {
270 XCrossingEvent *ev = &e->xcrossing;
271
272 if((ev->window == root) && !ev->same_screen) {
273 selscreen = False;
274 focus(NULL);
275 }
276}
277
278static void
279mappingnotify(XEvent *e) {
280 XMappingEvent *ev = &e->xmapping;
281
282 XRefreshKeyboardMapping(ev);
283 if(ev->request == MappingKeyboard)
284 grabkeys();
285}
286
287static void
288maprequest(XEvent *e) {
289 static XWindowAttributes wa;
290 XMapRequestEvent *ev = &e->xmaprequest;
291
292 if(!XGetWindowAttributes(dpy, ev->window, &wa))
293 return;
294 if(wa.override_redirect)
295 return;
296 if(!getclient(ev->window))
297 manage(ev->window, &wa);
298}
299
300static void
301propertynotify(XEvent *e) {
302 Client *c;
303 Window trans;
304 XPropertyEvent *ev = &e->xproperty;
305
306 if(ev->state == PropertyDelete)
307 return; /* ignore */
308 if((c = getclient(ev->window))) {
309 switch (ev->atom) {
310 default: break;
311 case XA_WM_TRANSIENT_FOR:
312 XGetTransientForHint(dpy, c->win, &trans);
313 if(!c->isversatile && (c->isversatile = (getclient(trans) != NULL)))
314 lt->arrange();
315 break;
316 case XA_WM_NORMAL_HINTS:
317 updatesizehints(c);
318 break;
319 }
320 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
321 updatetitle(c);
322 if(c == sel)
323 drawstatus();
324 }
325 }
326}
327
328static void
329unmapnotify(XEvent *e) {
330 Client *c;
331 XUnmapEvent *ev = &e->xunmap;
332
333 if((c = getclient(ev->window)))
334 unmanage(c);
335}
336
337/* extern */
338
339void (*handler[LASTEvent]) (XEvent *) = {
340 [ButtonPress] = buttonpress,
341 [ConfigureRequest] = configurerequest,
342 [DestroyNotify] = destroynotify,
343 [EnterNotify] = enternotify,
344 [LeaveNotify] = leavenotify,
345 [Expose] = expose,
346 [KeyPress] = keypress,
347 [MappingNotify] = mappingnotify,
348 [MapRequest] = maprequest,
349 [PropertyNotify] = propertynotify,
350 [UnmapNotify] = unmapnotify
351};
352
353void
354grabkeys(void) {
355 static unsigned int len = sizeof key / sizeof key[0];
356 unsigned int i;
357 KeyCode code;
358
359 XUngrabKey(dpy, AnyKey, AnyModifier, root);
360 for(i = 0; i < len; i++) {
361 code = XKeysymToKeycode(dpy, key[i].keysym);
362 XGrabKey(dpy, code, key[i].mod, root, True,
363 GrabModeAsync, GrabModeAsync);
364 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
365 GrabModeAsync, GrabModeAsync);
366 XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
367 GrabModeAsync, GrabModeAsync);
368 XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
369 GrabModeAsync, GrabModeAsync);
370 }
371}