/* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */
#include "dwm.h"
#include <stdlib.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>

/* static */

typedef struct {
	unsigned long mod;
	KeySym keysym;
	void (*func)(Arg *arg);
	Arg arg;
} Key;

KEYS

#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
#define MOUSEMASK		(BUTTONMASK | PointerMotionMask)

static void
movemouse(Client *c) {
	int x1, y1, ocx, ocy, di;
	unsigned int dui;
	Window dummy;
	XEvent ev;

	ocx = c->x;
	ocy = c->y;
	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
			None, cursor[CurMove], CurrentTime) != GrabSuccess)
		return;
	c->ismax = False;
	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
	for(;;) {
		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
		switch (ev.type) {
		case ButtonRelease:
			resize(c, True, TopLeft);
			XUngrabPointer(dpy, CurrentTime);
			return;
		case Expose:
			handler[Expose](&ev);
			break;
		case MotionNotify:
			XSync(dpy, False);
			c->x = ocx + (ev.xmotion.x - x1);
			c->y = ocy + (ev.xmotion.y - y1);
			if(abs(wax + c->x) < SNAP)
				c->x = wax;
			else if(abs((wax + waw) - (c->x + c->w)) < SNAP)
				c->x = wax + waw - c->w - 2 * BORDERPX;
			if(abs(way - c->y) < SNAP)
				c->y = way;
			else if(abs((way + wah) - (c->y + c->h)) < SNAP)
				c->y = way + wah - c->h - 2 * BORDERPX;
			resize(c, False, TopLeft);
			break;
		}
	}
}

static void
resizemouse(Client *c) {
	int ocx, ocy;
	int nw, nh;
	Corner sticky;
	XEvent ev;

	ocx = c->x;
	ocy = c->y;
	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
			None, cursor[CurResize], CurrentTime) != GrabSuccess)
		return;
	c->ismax = False;
	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
	for(;;) {
		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
		switch(ev.type) {
		case ButtonRelease:
			resize(c, True, TopLeft);
			XUngrabPointer(dpy, CurrentTime);
			return;
		case Expose:
			handler[Expose](&ev);
			break;
		case MotionNotify:
			XSync(dpy, False);
			if((nw = abs(ocx - ev.xmotion.x)))
				c->w = nw;
			if((nh = abs(ocy - ev.xmotion.y)))
				c->h = nh;
			c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
			c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
			if(ocx <= ev.xmotion.x)
				sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
			else
				sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
			resize(c, True, sticky);
			break;
		}
	}
}

static void
buttonpress(XEvent *e) {
	int x;
	Arg a;
	Client *c;
	XButtonPressedEvent *ev = &e->xbutton;

	if(barwin == ev->window) {
		x = 0;
		for(a.i = 0; a.i < ntags; a.i++) {
			x += textw(tags[a.i]);
			if(ev->x < x) {
				if(ev->button == Button1) {
					if(ev->state & MODKEY)
						tag(&a);
					else
						view(&a);
				}
				else if(ev->button == Button3) {
					if(ev->state & MODKEY)
						toggletag(&a);
					else
						toggleview(&a);
				}
				return;
			}
		}
		if((ev->x < x + bmw) && (ev->button == Button1))
			togglemode(NULL);
	}
	else if((c = getclient(ev->window))) {
		focus(c);
		if(CLEANMASK(ev->state) != MODKEY)
			return;
		if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
			restack();
			movemouse(c);
		}
		else if(ev->button =<style>pre { line-height: 125%; }
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