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 }
147 }
148 else if((c = getclient(ev->window))) {
149 focus(c);
150 if(CLEANMASK(ev->state) != MODKEY)
151 return;
152 if(ev->button == Button1 && (lt->arrange == versatile || c->isversatile)) {
153 restack();
154 movemouse(c);
155 }
156 else if(ev->button == Button2)
157 zoom(a);
158 else if(ev->button == Button3
159 && (lt->arrange == versatile || c->isversatile) && !c->isfixed)
160 {
161 restack();
162 resizemouse(c);
163 }
164 }
165}
166
167static void
168configurerequest(XEvent *e) {
169 Client *c;
170 XConfigureRequestEvent *ev = &e->xconfigurerequest;
171 XWindowChanges wc;
172
173 if((c = getclient(ev->window))) {
174 c->ismax = False;
175 if(ev->value_mask & CWBorderWidth)
176 c->border = ev->border_width;
177 if(c->isfixed || c->isversatile || (lt->arrange == versatile)) {
178 if(ev->value_mask & CWX)
179 c->x = ev->x;
180 if(ev->value_mask & CWY)
181 c->y = ev->y;
182 if(ev->value_mask & CWWidth)
183 c->w = ev->width;
184 if(ev->value_mask & CWHeight)
185 c->h = ev->height;
186 if((ev->value_mask & (CWX | CWY))
187 && !(ev->value_mask & (CWWidth | CWHeight)))
188 configure(c);
189 if(isvisible(c))
190 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
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->isversatile && (c->isversatile = (getclient(trans) != NULL)))
306 lt->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}