1/*
  2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
  3 * See LICENSE file for license details.
  4 */
  5
  6#include <fcntl.h>
  7#include <stdlib.h>
  8#include <string.h>
  9#include <X11/keysym.h>
 10#include <X11/Xatom.h>
 11
 12#include "wm.h"
 13
 14/* local functions */
 15static void buttonpress(XEvent *e);
 16static void configurerequest(XEvent *e);
 17static void destroynotify(XEvent *e);
 18static void enternotify(XEvent *e);
 19static void leavenotify(XEvent *e);
 20static void expose(XEvent *e);
 21static void keymapnotify(XEvent *e);
 22static void maprequest(XEvent *e);
 23static void propertynotify(XEvent *e);
 24static void unmapnotify(XEvent *e);
 25
 26void (*handler[LASTEvent]) (XEvent *) = {
 27	[ButtonPress] = buttonpress,
 28	[ConfigureRequest] = configurerequest,
 29	[DestroyNotify] = destroynotify,
 30	[EnterNotify] = enternotify,
 31	[LeaveNotify] = leavenotify,
 32	[Expose] = expose,
 33	[KeyPress] = keypress,
 34	[KeymapNotify] = keymapnotify,
 35	[MapRequest] = maprequest,
 36	[PropertyNotify] = propertynotify,
 37	[UnmapNotify] = unmapnotify
 38};
 39
 40unsigned int
 41discard_events(long even_mask)
 42{
 43	XEvent ev;
 44	unsigned int n = 0;
 45	while(XCheckMaskEvent(dpy, even_mask, &ev)) n++;
 46	return n;
 47}
 48
 49static void
 50buttonpress(XEvent *e)
 51{
 52	XButtonPressedEvent *ev = &e->xbutton;
 53	Client *c;
 54
 55	if((c = getclient(ev->window))) {
 56		switch(ev->button) {
 57		default:
 58			break;
 59		case Button1:
 60			mmove(c);
 61			break;
 62		case Button2:
 63			XLowerWindow(dpy, c->win);
 64			break;
 65		case Button3:
 66			mresize(c);
 67			break;
 68		}
 69	}
 70}
 71
 72static void
 73configurerequest(XEvent *e)
 74{
 75	XConfigureRequestEvent *ev = &e->xconfigurerequest;
 76	XWindowChanges wc;
 77	Client *c;
 78
 79	ev->value_mask &= ~CWSibling;
 80	if((c = getclient(ev->window))) {
 81		if(ev->value_mask & CWX)
 82			c->r[RFloat].x = ev->x;
 83		if(ev->value_mask & CWY)
 84			c->r[RFloat].y = ev->y;
 85		if(ev->value_mask & CWWidth)
 86			c->r[RFloat].width = ev->width;
 87		if(ev->value_mask & CWHeight)
 88			c->r[RFloat].height = ev->height;
 89		if(ev->value_mask & CWBorderWidth)
 90			c->border = ev->border_width;
 91	}
 92
 93	wc.x = ev->x;
 94	wc.y = ev->y;
 95	wc.width = ev->width;
 96	wc.height = ev->height;
 97	wc.border_width = 0;
 98	wc.sibling = None;
 99	wc.stack_mode = Above;
100	ev->value_mask &= ~CWStackMode;
101	ev->value_mask |= CWBorderWidth;
102	XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
103	XFlush(dpy);
104}
105
106static void
107destroynotify(XEvent *e)
108{
109	Client *c;
110	XDestroyWindowEvent *ev = &e->xdestroywindow;
111
112	if((c = getclient(ev->window)))
113		unmanage(c);
114}
115
116static void
117enternotify(XEvent *e)
118{
119	XCrossingEvent *ev = &e->xcrossing;
120	Client *c;
121
122	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
123		return;
124
125	if((c = getclient(ev->window)))
126		focus(c);
127	else if(ev->window == root) {
128		sel_screen = True;
129		/*draw_frames();*/
130	}
131}
132
133static void
134leavenotify(XEvent *e)
135{
136	XCrossingEvent *ev = &e->xcrossing;
137
138	if((ev->window == root) && !ev->same_screen) {
139		sel_screen = True;
140		/*draw_frames();*/
141	}
142}
143
144static void
145expose(XEvent *e)
146{
147	XExposeEvent *ev = &e->xexpose;
148
149	if(ev->count == 0) {
150		if(ev->window == barwin)
151			draw_bar();
152	}
153}
154
155static void
156keymapnotify(XEvent *e)
157{
158	update_keys();
159}
160
161static void
162maprequest(XEvent *e)
163{
164	XMapRequestEvent *ev = &e->xmaprequest;
165	static XWindowAttributes wa;
166
167	if(!XGetWindowAttributes(dpy, ev->window, &wa))
168		return;
169
170	if(wa.override_redirect) {
171		XSelectInput(dpy, ev->window,
172				(StructureNotifyMask | PropertyChangeMask));
173		return;
174	}
175
176	if(!getclient(ev->window))
177		manage(ev->window, &wa);
178}
179
180static void
181propertynotify(XEvent *e)
182{
183	XPropertyEvent *ev = &e->xproperty;
184	long msize;
185	Client *c;
186
187	if(ev->state == PropertyDelete)
188		return; /* ignore */
189
190	if(ev->atom == wm_atom[WMProtocols]) {
191		c->proto = win_proto(c->win);
192		return;
193	}
194	if((c = getclient(ev->window))) {
195		switch (ev->atom) {
196			default: break;
197			case XA_WM_TRANSIENT_FOR:
198				XGetTransientForHint(dpy, c->win, &c->trans);
199				break;
200			case XA_WM_NORMAL_HINTS:
201				if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize)
202						|| !c->size.flags)
203					c->size.flags = PSize;
204				if(c->size.flags & PMinSize && c->size.flags & PMaxSize
205						&& c->size.min_width == c->size.max_width
206						&& c->size.min_height == c->size.max_height)
207					c->fixedsize = True;
208				else
209					c->fixedsize = False;
210				break;
211		}
212		if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
213			update_name(c);
214		}
215	}
216}
217
218static void
219unmapnotify(XEvent *e)
220{
221	Client *c;
222	XUnmapEvent *ev = &e->xunmap;
223
224	if((c = getclient(ev->window)))
225		unmanage(c);
226}