1 /* Copyright (c) 1994-1996 David Hogan, see README for licence details */
2 #include <stdio.h>
3 #include <unistd.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <X11/X.h>
7 #include <X11/Xlib.h>
8 #include <X11/Xutil.h>
9 #include "dat.h"
10 #include "fns.h"
11 
12 Client	*clients;
13 Client	*current;
14 
15 void
16 setactive(Client *c, int on)
17 {
18 	if (c->parent == c->screen->root) {
19 		fprintf(stderr, "9wm: bad parent in setactive; dumping core\n");
20 		abort();
21 	}
22 	if (on) {
23 		XUngrabButton(dpy, AnyButton, AnyModifier, c->parent);
24 		XSetInputFocus(dpy, c->window, RevertToPointerRoot, timestamp());
25 		if (c->proto & Ptakefocus)
26 			sendcmessage(c->window, wm_protocols, wm_take_focus, 0);
27 		cmapfocus(c);
28 	} else {
29 		if (c->proto & Plosefocus)
30 			sendcmessage(c->window, wm_protocols, wm_lose_focus, 0);
31 		XGrabButton(dpy, AnyButton, AnyModifier, c->parent, False,
32 			ButtonMask, GrabModeAsync, GrabModeSync, None, None);
33 	}
34 	draw_border(c, on);
35 }
36 
37 void
38 draw_border(Client *c, int active)
39 {
40 	unsigned long pixel;
41 
42 	if(active){
43 		if(c->hold)
44 			pixel = c->screen->activeholdborder;
45 		else
46 			pixel = c->screen->activeborder;
47 	}else{
48 		if(c->hold)
49 			pixel = c->screen->inactiveholdborder;
50 		else
51 			pixel = c->screen->inactiveborder;
52 	}
53 
54 	if (debug) fprintf(stderr, "draw_border %p pixel %ld active %d hold %d\n", c, pixel, active, c->hold);
55 	XSetWindowBackground(dpy, c->parent, pixel);
56 	XClearWindow(dpy, c->parent);
57 }
58 
59 void
60 active(Client *c)
61 {
62 	Client *cc;
63 
64 	if (c == 0) {
65 		fprintf(stderr, "9wm: active(c==0)\n");
66 		return;
67 	}
68 	if (c == current)
69 		return;
70 	if (current) {
71 		setactive(current, 0);
72 		if (current->screen != c->screen)
73 			cmapnofocus(current->screen);
74 	}
75 	setactive(c, 1);
76 	for (cc = clients; cc; cc = cc->next)
77 		if (cc->revert == c)
78 			cc->revert = c->revert;
79 	c->revert = current;
80 	while (c->revert && !normal(c->revert))
81 		c->revert = c->revert->revert;
82 	current = c;
83 #ifdef	DEBUG
84 	if (debug)
85 		dump_revert();
86 #endif
87 }
88 
89 void
90 nofocus(void)
91 {
92 	static Window w = 0;
93 	int mask;
94 	XSetWindowAttributes attr;
95 	Client *c;
96 
97 	if (current) {
98 		setactive(current, 0);
99 		for (c = current->revert; c; c = c->revert)
100 			if (normal(c)) {
101 				active(c);
102 				return;
103 			}
104 		cmapnofocus(current->screen);
105 		/* if no candidates to revert to, fall through */
106 	}
107 	current = 0;
108 	if (w == 0) {
109 		mask = CWOverrideRedirect/*|CWColormap*/;
110 		attr.override_redirect = 1;
111 		/* attr.colormap = screens[0].def_cmap;*/
112 		w = XCreateWindow(dpy, screens[0].root, 0, 0, 1, 1, 0,
113 			0 /*screens[0].depth*/, InputOnly, 	screens[0].vis, mask, &attr);
114 		XMapWindow(dpy, w);
115 	}
116 	XSetInputFocus(dpy, w, RevertToPointerRoot, timestamp());
117 }
118 
119 void
120 top(Client *c)
121 {
122 	Client **l, *cc;
123 
124 	l = &clients;
125 	for (cc = *l; cc; cc = *l) {
126 		if (cc == c) {
127 			*l = c->next;
128 			c->next = clients;
129 			clients = c;
130 			return;
131 		}
132 		l = &cc->next;
133 	}
134 	fprintf(stderr, "9wm: %p not on client list in top()\n", c);
135 }
136 
137 Client *
138 getclient(Window w, int create)
139 {
140 	Client *c;
141 
142 	if (w == 0 || getscreen(w))
143 		return 0;
144 
145 	for (c = clients; c; c = c->next)
146 		if (c->window == w || c->parent == w)
147 			return c;
148 
149 	if (!create)
150 		return 0;
151 
152 	c = (Client *)malloc(sizeof(Client));
153 	memset(c, 0, sizeof(Client));
154 	c->window = w;
155 	/* c->parent will be set by the caller */
156 	c->parent = None;
157 	c->reparenting = 0;
158 	c->state = WithdrawnState;
159 	c->init = 0;
160 	c->cmap = None;
161 	c->label = c->class = 0;
162 	c->revert = 0;
163 	c->is9term = 0;
164 	c->hold = 0;
165 	c->ncmapwins = 0;
166 	c->cmapwins = 0;
167 	c->wmcmaps = 0;
168 	c->next = clients;
169 	clients = c;
170 	return c;
171 }
172 
173 void
174 rmclient(Client *c)
175 {
176 	Client *cc;
177 
178 	for (cc = current; cc && cc->revert; cc = cc->revert)
179 		if (cc->revert == c)
180 			cc->revert = cc->revert->revert;
181 
182 	if (c == clients)
183 		clients = c->next;
184 	for (cc = clients; cc && cc->next; cc = cc->next)
185 		if (cc->next == c)
186 			cc->next = cc->next->next;
187 
188 	if (hidden(c))
189 		unhidec(c, 0);
190 
191 	if (c->parent != c->screen->root)
192 		XDestroyWindow(dpy, c->parent);
193 
194 	c->parent = c->window = None;		/* paranoia */
195 	if (current == c) {
196 		current = c->revert;
197 		if (current == 0)
198 			nofocus();
199 		else {
200 			if (current->screen != c->screen)
201 				cmapnofocus(c->screen);
202 			setactive(current, 1);
203 		}
204 	}
205 	if (c->ncmapwins != 0) {
206 		XFree((char *)c->cmapwins);
207 		free((char *)c->wmcmaps);
208 	}
209 	if (c->iconname != 0)
210 		XFree((char*) c->iconname);
211 	if (c->name != 0)
212 		XFree((char*) c->name);
213 	if (c->instance != 0)
214 		XFree((char*) c->instance);
215 	if (c->class != 0)
216 		XFree((char*) c->class);
217 	memset(c, 0, sizeof(Client));		/* paranoia */
218 	free(c);
219 }
220 
221 #ifdef	DEBUG
222 void
223 dump_revert(void)
224 {
225 	Client *c;
226 	int i;
227 
228 	i = 0;
229 	for (c = current; c; c = c->revert) {
230 		fprintf(stderr, "%s(%x:%d)", c->label ? c->label : "?", c->window, c->state);
231 		if (i++ > 100)
232 			break;
233 		if (c->revert)
234 			fprintf(stderr, " -> ");
235 	}
236 	if (current == 0)
237 		fprintf(stderr, "empty");
238 	fprintf(stderr, "\n");
239 }
240 
241 void
242 dump_clients(void)
243 {
244 	Client *c;
245 
246 	for (c = clients; c; c = c->next)
247 		fprintf(stderr, "w 0x%x parent 0x%x @ (%d, %d)\n", c->window, c->parent, c->x, c->y);
248 }
249 #endif