event.c (view raw)
1/*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
5#include "dwm.h"
6#include <stdlib.h>
7#include <X11/keysym.h>
8#include <X11/Xatom.h>
9
10/* static */
11
12typedef struct {
13 unsigned long mod;
14 KeySym keysym;
15 void (*func)(Arg *arg);
16 Arg arg;
17} Key;
18
19KEYS
20
21#define CLEANMASK(mask) (mask & ~(NUMLOCKMASK | LockMask))
22
23static void
24movemouse(Client *c)
25{
26 int x1, y1, ocx, ocy, di;
27 unsigned int dui;
28 Window dummy;
29 XEvent ev;
30
31 ocx = c->x;
32 ocy = c->y;
33 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
34 None, cursor[CurMove], CurrentTime) != GrabSuccess)
35 return;
36 XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
37 for(;;) {
38 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
39 switch (ev.type) {
40 default: break;
41 case Expose:
42 handler[Expose](&ev);
43 break;
44 case MotionNotify:
45 XSync(dpy, False);
46 c->x = ocx + (ev.xmotion.x - x1);
47 c->y = ocy + (ev.xmotion.y - y1);
48 resize(c, False, TopLeft);
49 break;
50 case ButtonRelease:
51 XUngrabPointer(dpy, CurrentTime);
52 return;
53 }
54 }
55}
56
57static void
58resizemouse(Client *c)
59{
60 int ocx, ocy;
61 int nw, nh;
62 Corner sticky;
63 XEvent ev;
64
65 ocx = c->x;
66 ocy = c->y;
67 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
68 None, cursor[CurResize], CurrentTime) != GrabSuccess)
69 return;
70 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
71 for(;;) {
72 XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
73 switch(ev.type) {
74 default: break;
75 case Expose:
76 handler[Expose](&ev);
77 break;
78 case MotionNotify:
79 XSync(dpy, False);
80 if((nw = abs(ocx - ev.xmotion.x)))
81 c->w = abs(ocx - ev.xmotion.x);
82 if((nh = abs(ocy - ev.xmotion.y)))
83 c->h = abs(ocy - ev.xmotion.y);
84 c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
85 c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
86 if(ocx <= ev.xmotion.x)
87 sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
88 else
89 sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
90 resize(c, True, sticky);
91 break;
92 case ButtonRelease:
93 XUngrabPointer(dpy, CurrentTime);
94 return;
95 }
96 }
97}
98
99static void
100buttonpress(XEvent *e)
101{
102 int x;
103 Arg a;
104 Client *c;
105 XButtonPressedEvent *ev = &e->xbutton;
106
107 if(barwin == ev->window) {
108 x = 0;
109 for(a.i = 0; a.i < ntags; a.i++) {
110 x += textw(tags[a.i]);
111 if(ev->x < x) {
112 if(ev->button == Button3)
113 toggleview(&a);
114 else
115 view(&a);
116 return;
117 }
118 }
119 }
120 else if((c = getclient(ev->window))) {
121 focus(c);
122 switch(ev->button) {
123 default:
124 break;
125 case Button1:
126 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
127 restack(c);
128 movemouse(c);
129 }
130 break;
131 case Button2:
132 zoom(NULL);
133 break;
134 case Button3:
135 if(!c->ismax && (arrange == dofloat || c->isfloat)) {
136 restack(c);
137 resizemouse(c);
138 }
139 break;
140 }
141 }
142}
143
144static void
145configurerequest(XEvent *e)
146{
147 Client *c;
148 XConfigureRequestEvent *ev = &e->xconfigurerequest;
149 XEvent synev;
150 XWindowChanges wc;
151 unsigned long newmask;
152
153 if((c = getclient(ev->window))) {
154 gravitate(c, True);
155 if(ev->value_mask & CWX)
156 c->x = ev->x;
157 if(ev->value_mask & CWY)
158 c->y = ev->y;
159 if(ev->value_mask & CWWidth)
160 c->w = ev->width;
161 if(ev->value_mask & CWHeight)
162 c->h = ev->height;
163 if(ev->value_mask & CWBorderWidth)
164 c->border = ev->border_width;
165 gravitate(c, False);
166 wc.x = c->x;
167 wc.y = c->y;
168 wc.width = c->w;
169 wc.height = c->h;
170 newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
171 if(newmask)
172 XConfigureWindow(dpy, c->win, newmask, &wc);
173 else {
174 synev.type = ConfigureNotify;
175 synev.xconfigure.display = dpy;
176 synev.xconfigure.event = c->win;
177 synev.xconfigure.window = c->win;
178 synev.xconfigure.x = c->x;
179 synev.xconfigure.y = c->y;
180 synev.xconfigure.width = c->w;
181 synev.xconfigure.height = c->h;
182 synev.xconfigure.border_width = c->border;
183 synev.xconfigure.above = None;
184 /* Send synthetic ConfigureNotify */
185 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
186 }
187 XSync(dpy, False);
188 if(c->isfloat)
189 resize(c, False, TopLeft);
190 else
191 arrange(NULL);
192 }
193 else {
194 wc.x = ev->x;
195 wc.y = ev->y;
196 wc.width = ev->width;
197 wc.height = ev->height;
198 wc.border_width = ev->border_width;
199 wc.sibling = ev->above;
200 wc.stack_mode = ev->detail;
201 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
202 XSync(dpy, False);
203 }
204}
205
206static void
207destroynotify(XEvent *e)
208{
209 Client *c;
210 XDestroyWindowEvent *ev = &e->xdestroywindow;
211
212 if((c = getclient(ev->window)))
213 unmanage(c);
214}
215
216static void
217enternotify(XEvent *e)
218{
219 Client *c;
220 XCrossingEvent *ev = &e->xcrossing;
221
222 if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
223 return;
224
225 if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
226 focus(c);
227 else if(ev->window == root) {
228 issel = True;
229 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
230 drawall();
231 }
232}
233
234static void
235expose(XEvent *e)
236{
237 Client *c;
238 XExposeEvent *ev = &e->xexpose;
239
240 if(ev->count == 0) {
241 if(barwin == ev->window)
242 drawstatus();
243 else if((c = getctitle(ev->window)))
244 drawtitle(c);
245 }
246}
247
248static void
249keypress(XEvent *e)
250{
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 if(key[i].func)
261 key[i].func(&key[i].arg);
262 return;
263 }
264}
265
266static void
267leavenotify(XEvent *e)
268{
269 XCrossingEvent *ev = &e->xcrossing;
270
271 if((ev->window == root) && !ev->same_screen) {
272 issel = False;
273 drawall();
274 }
275}
276
277static void
278maprequest(XEvent *e)
279{
280 static XWindowAttributes wa;
281 XMapRequestEvent *ev = &e->xmaprequest;
282
283 if(!XGetWindowAttributes(dpy, ev->window, &wa))
284 return;
285
286 if(wa.override_redirect) {
287 XSelectInput(dpy, ev->window,
288 (StructureNotifyMask | PropertyChangeMask));
289 return;
290 }
291
292 if(!getclient(ev->window))
293 manage(ev->window, &wa);
294}
295
296static void
297propertynotify(XEvent *e)
298{
299 Client *c;
300 Window trans;
301 XPropertyEvent *ev = &e->xproperty;
302
303 if(ev->state == PropertyDelete)
304 return; /* ignore */
305
306 if((c = getclient(ev->window))) {
307 if(ev->atom == wmatom[WMProtocols]) {
308 c->proto = getproto(c->win);
309 return;
310 }
311 switch (ev->atom) {
312 default: break;
313 case XA_WM_TRANSIENT_FOR:
314 XGetTransientForHint(dpy, c->win, &trans);
315 if(!c->isfloat && (c->isfloat = (trans != 0)))
316 arrange(NULL);
317 break;
318 case XA_WM_NORMAL_HINTS:
319 setsize(c);
320 break;
321 }
322 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
323 settitle(c);
324 drawtitle(c);
325 }
326 }
327}
328
329static void
330unmapnotify(XEvent *e)
331{
332 Client *c;
333 XUnmapEvent *ev = &e->xunmap;
334
335 if((c = getclient(ev->window)))
336 unmanage(c);
337}
338
339/* extern */
340
341void (*handler[LASTEvent]) (XEvent *) = {
342 [ButtonPress] = buttonpress,
343 [ConfigureRequest] = configurerequest,
344 [DestroyNotify] = destroynotify,
345 [EnterNotify] = enternotify,
346 [LeaveNotify] = leavenotify,
347 [Expose] = expose,
348 [KeyPress] = keypress,
349 [MapRequest] = maprequest,
350 [PropertyNotify] = propertynotify,
351 [UnmapNotify] = unmapnotify
352};
353
354void
355grabkeys()
356{
357 static unsigned int len = sizeof(key) / sizeof(key[0]);
358 unsigned int i;
359 KeyCode code;
360
361 for(i = 0; i < len; i++) {
362 code = XKeysymToKeycode(dpy, key[i].keysym);
363 XGrabKey(dpy, code, key[i].mod, root, True,
364 GrabModeAsync, GrabModeAsync);
365 XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
366 GrabModeAsync, GrabModeAsync);
367 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK, root, True,
368 GrabModeAsync, GrabModeAsync);
369 XGrabKey(dpy, code, key[i].mod | NUMLOCKMASK | LockMask, root, True,
370 GrabModeAsync, GrabModeAsync);
371 }
372}