client.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 <string.h>
7#include <X11/Xatom.h>
8#include <X11/Xutil.h>
9
10/* static */
11
12static void
13grabbuttons(Client *c, Bool focused) {
14 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
15
16 if(focused) {
17 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
18 GrabModeAsync, GrabModeSync, None, None);
19 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
20 GrabModeAsync, GrabModeSync, None, None);
21 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
22 GrabModeAsync, GrabModeSync, None, None);
23 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
24 GrabModeAsync, GrabModeSync, None, None);
25
26 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
27 GrabModeAsync, GrabModeSync, None, None);
28 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
29 GrabModeAsync, GrabModeSync, None, None);
30 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
31 GrabModeAsync, GrabModeSync, None, None);
32 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34
35 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
38 GrabModeAsync, GrabModeSync, None, None);
39 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
40 GrabModeAsync, GrabModeSync, None, None);
41 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 }
44 else
45 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47}
48
49static void
50setclientstate(Client *c, long state) {
51 long data[] = {state, None};
52 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
53 PropModeReplace, (unsigned char *)data, 2);
54}
55
56static int
57xerrordummy(Display *dsply, XErrorEvent *ee) {
58 return 0;
59}
60
61/* extern */
62
63void
64configure(Client *c) {
65 XConfigureEvent ce;
66
67 ce.type = ConfigureNotify;
68 ce.display = dpy;
69 ce.event = c->win;
70 ce.window = c->win;
71 ce.x = c->x;
72 ce.y = c->y;
73 ce.width = c->w;
74 ce.height = c->h;
75 ce.border_width = c->border;
76 ce.above = None;
77 ce.override_redirect = False;
78 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
79}
80
81void
82focus(Client *c) {
83 if(c && !isvisible(c))
84 return;
85 if(sel && sel != c) {
86 grabbuttons(sel, False);
87 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
88 }
89 if(c) {
90 detachstack(c);
91 attachstack(c);
92 grabbuttons(c, True);
93 }
94 sel = c;
95 drawstatus();
96 if(!selscreen)
97 return;
98 if(c) {
99 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
100 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
101 }
102 else
103 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
104}
105
106Bool
107isprotodel(Client *c) {
108 int i, n;
109 Atom *protocols;
110 Bool ret = False;
111
112 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
113 for(i = 0; !ret && i < n; i++)
114 if(protocols[i] == wmatom[WMDelete])
115 ret = True;
116 XFree(protocols);
117 }
118 return ret;
119}
120
121void
122killclient(Arg *arg) {
123 if(!sel)
124 return;
125 if(isprotodel(sel))
126 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
127 else
128 XKillClient(dpy, sel->win);
129}
130
131void
132manage(Window w, XWindowAttributes *wa) {
133 Client *c, *t;
134 Window trans;
135 XWindowChanges wc;
136
137 c = emallocz(sizeof(Client));
138 c->tags = emallocz(ntags * sizeof(Bool));
139 c->win = w;
140 c->x = wa->x;
141 c->y = wa->y;
142 c->w = wa->width;
143 c->h = wa->height;
144 if(c->w == sw && c->h == sh) {
145 c->border = 0;
146 c->x = sx;
147 c->y = sy;
148 }
149 else {
150 c->border = BORDERPX;
151 if(c->x + c->w + 2 * c->border > wax + waw)
152 c->x = wax + waw - c->w - 2 * c->border;
153 if(c->y + c->h + 2 * c->border > way + wah)
154 c->y = way + wah - c->h - 2 * c->border;
155 if(c->x < wax)
156 c->x = wax;
157 if(c->y < way)
158 c->y = way;
159 }
160 updatesizehints(c);
161 XSelectInput(dpy, c->win,
162 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
163 XGetTransientForHint(dpy, c->win, &trans);
164 grabbuttons(c, False);
165 wc.border_width = c->border;
166 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
167 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
168 configure(c); /* propagates border_width, if size doesn't change */
169 updatetitle(c);
170 t = getclient(trans);
171 settags(c, t);
172 if(!c->isfloat)
173 c->isfloat = (t != 0) || c->isfixed;
174 attach(c);
175 attachstack(c);
176 c->isbanned = True;
177 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
178 XMapWindow(dpy, c->win);
179 setclientstate(c, NormalState);
180 if(isvisible(c))
181 focus(c);
182 arrange();
183}
184
185void
186resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
187 float actual, dx, dy, max, min;
188 XWindowChanges wc;
189
190 if(w <= 0 || h <= 0)
191 return;
192 if(sizehints) {
193 if(c->minw && w < c->minw)
194 w = c->minw;
195 if(c->minh && h < c->minh)
196 h = c->minh;
197 if(c->maxw && w > c->maxw)
198 w = c->maxw;
199 if(c->maxh && h > c->maxh)
200 h = c->maxh;
201 /* inspired by algorithm from fluxbox */
202 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
203 dx = (float)(w - c->basew);
204 dy = (float)(h - c->baseh);
205 min = (float)(c->minax) / (float)(c->minay);
206 max = (float)(c->maxax) / (float)(c->maxay);
207 actual = dx / dy;
208 if(max > 0 && min > 0 && actual > 0) {
209 if(actual < min) {
210 dy = (dx * min + dy) / (min * min + 1);
211 dx = dy * min;
212 w = (int)dx + c->basew;
213 h = (int)dy + c->baseh;
214 }
215 else if(actual > max) {
216 dy = (dx * min + dy) / (max * max + 1);
217 dx = dy * min;
218 w = (int)dx + c->basew;
219 h = (int)dy + c->baseh;
220 }
221 }
222 }
223 if(c->incw)
224 w -= (w - c->basew) % c->incw;
225 if(c->inch)
226 h -= (h - c->baseh) % c->inch;
227 }
228 if(w == sw && h == sh)
229 c->border = 0;
230 else
231 c->border = BORDERPX;
232 /* offscreen appearance fixes */
233 if(x > sw)
234 x = sw - w - 2 * c->border;
235 if(y > sh)
236 y = sh - h - 2 * c->border;
237 if(x + w + 2 * c->border < sx)
238 x = sx;
239 if(y + h + 2 * c->border < sy)
240 y = sy;
241 if(c->x != x || c->y != y || c->w != w || c->h != h) {
242 c->x = wc.x = x;
243 c->y = wc.y = y;
244 c->w = wc.width = w;
245 c->h = wc.height = h;
246 wc.border_width = c->border;
247 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
248 configure(c);
249 XSync(dpy, False);
250 }
251}
252
253void
254updatesizehints(Client *c) {
255 long msize;
256 XSizeHints size;
257
258 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
259 size.flags = PSize;
260 c->flags = size.flags;
261 if(c->flags & PBaseSize) {
262 c->basew = size.base_width;
263 c->baseh = size.base_height;
264 }
265 else
266 c->basew = c->baseh = 0;
267 if(c->flags & PResizeInc) {
268 c->incw = size.width_inc;
269 c->inch = size.height_inc;
270 }
271 else
272 c->incw = c->inch = 0;
273 if(c->flags & PMaxSize) {
274 c->maxw = size.max_width;
275 c->maxh = size.max_height;
276 }
277 else
278 c->maxw = c->maxh = 0;
279 if(c->flags & PMinSize) {
280 c->minw = size.min_width;
281 c->minh = size.min_height;
282 }
283 else
284 c->minw = c->minh = 0;
285 if(c->flags & PAspect) {
286 c->minax = size.min_aspect.x;
287 c->minay = size.min_aspect.y;
288 c->maxax = size.max_aspect.x;
289 c->maxay = size.max_aspect.y;
290 }
291 else
292 c->minax = c->minay = c->maxax = c->maxay = 0;
293 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
294 && c->maxw == c->minw && c->maxh == c->minh);
295}
296
297void
298updatetitle(Client *c) {
299 char **list = NULL;
300 int n;
301 XTextProperty name;
302
303 name.nitems = 0;
304 c->name[0] = 0;
305 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
306 if(!name.nitems)
307 XGetWMName(dpy, c->win, &name);
308 if(!name.nitems)
309 return;
310 if(name.encoding == XA_STRING)
311 strncpy(c->name, (char *)name.value, sizeof c->name);
312 else {
313 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
314 && n > 0 && *list)
315 {
316 strncpy(c->name, *list, sizeof c->name);
317 XFreeStringList(list);
318 }
319 }
320 XFree(name.value);
321}
322
323void
324unmanage(Client *c) {
325 Client *nc;
326
327 /* The server grab construct avoids race conditions. */
328 XGrabServer(dpy);
329 XSetErrorHandler(xerrordummy);
330 detach(c);
331 detachstack(c);
332 if(sel == c) {
333 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
334 focus(nc);
335 }
336 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
337 setclientstate(c, WithdrawnState);
338 free(c->tags);
339 free(c);
340 XSync(dpy, False);
341 XSetErrorHandler(xerror);
342 XUngrabServer(dpy);
343 arrange();
344}