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 "dwm.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
 40void
 41discard_events(long even_mask)
 42{
 43	XEvent ev;
 44	while(XCheckMaskEvent(dpy, even_mask, &ev));
 45}
 46
 47static void
 48buttonpress(XEvent *e)
 49{
 50	XButtonPressedEvent *ev = &e->xbutton;
 51	Client *c;
 52
 53	if((c = getclient(ev->window))) {
 54		craise(c);
 55		switch(ev->button) {
 56		default:
 57			break;
 58		case Button1:
 59			mmove(c);
 60			break;
 61		case Button2:
 62			lower(c);
 63			break;
 64		case Button3:
 65			mresize(c);
 66			break;
 67		}
 68	}
 69}
 70
 71static void
 72configurerequest(XEvent *e)
 73{
 74	XConfigureRequestEvent *ev = &e->xconfigurerequest;
 75	XWindowChanges wc;
 76	Client *c;
 77
 78	ev->value_mask &= ~CWSibling;
 79	if((c = getclient(ev->window))) {
 80		gravitate(c, True);
 81		if(ev->value_mask & CWX)
 82			c->x = ev->x;
 83		if(ev->value_mask & CWY)
 84			c->y = ev->y;
 85		if(ev->value_mask & CWWidth)
 86			c->w = ev->width;
 87		if(ev->value_mask & CWHeight)
 88			c->h = ev->height;
 89		if(ev->value_mask & CWBorderWidth)
 90			c->border = ev->border_width;
 91		gravitate(c, False);
 92		resize(c, True);
 93	}
 94
 95	wc.x = ev->x;
 96	wc.y = ev->y;
 97	wc.width = ev->width;
 98	wc.height = ev->height;
 99	wc.border_width = 1;
100	wc.sibling = None;
101	wc.stack_mode = Above;
102	ev->value_mask &= ~CWStackMode;
103	ev->value_mask |= CWBorderWidth;
104	XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
105	XFlush(dpy);
106}
107
108static void
109destroynotify(XEvent *e)
110{
111	Client *c;
112	XDestroyWindowEvent *ev = &e->xdestroywindow;
113
114	if((c = getclient(ev->window)))
115		unmanage(c);
116}
117
118static void
119enternotify(XEvent *e)
120{
121	XCrossingEvent *ev = &e->xcrossing;
122	Client *c;
123
124	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
125		return;
126
127	if((c = getclient(ev->window)))
128		focus(c);
129	else if(ev->window == root)
130		issel = True;
131}
132
133static void
134leavenotify(XEvent *e)
135{
136	XCrossingEvent *ev = &e->xcrossing;
137
138	if((ev->window == root) && !ev->same_screen)
139		issel = True;
140}
141
142static void
143expose(XEvent *e)
144{
145	XExposeEvent *ev = &e->xexpose;
146	Client *c;
147
148	if(ev->count == 0) {
149		if((c = gettitle(ev->window)))
150			draw_client(c);
151	}
152}
153
154static void
155keymapnotify(XEvent *e)
156{
157	update_keys();
158}
159
160static void
161maprequest(XEvent *e)
162{
163	XMapRequestEvent *ev = &e->xmaprequest;
164	static XWindowAttributes wa;
165
166	if(!XGetWindowAttributes(dpy, ev->window, &wa))
167		return;
168
169	if(wa.override_redirect) {
170		XSelectInput(dpy, ev->window,
171				(StructureNotifyMask | PropertyChangeMask));
172		return;
173	}
174
175	if(!getclient(ev->window))
176		manage(ev->window, &wa);
177}
178
179static void
180propertynotify(XEvent *e)
181{
182	XPropertyEvent *ev = &e->xproperty;
183	Window trans;
184	Client *c;
185
186	if(ev->state == PropertyDelete)
187		return; /* ignore */
188
189	if((c = getclient(ev->window))) {
190		if(ev->atom == wm_atom[WMProtocols]) {
191			c->proto = win_proto(c->win);
192			return;
193		}
194		switch (ev->atom) {
195			default: break;
196			case XA_WM_TRANSIENT_FOR:
197				XGetTransientForHint(dpy, c->win, &trans);
198				if(!c->floating && (c->floating = (trans != 0)))
199					arrange(NULL);
200				break;
201			case XA_WM_NORMAL_HINTS:
202				update_size(c);
203				break;
204		}
205		if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
206			update_name(c);
207			draw_client(c);
208		}
209	}
210}
211
212static void
213unmapnotify(XEvent *e)
214{
215	Client *c;
216	XUnmapEvent *ev = &e->xunmap;
217
218	if((c = getclient(ev->window)))
219		unmanage(c);
220}