/*

 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>

 * (C)opyright MMVI Kris Maglione <fbsdaemon@gmail.com>

 * See LICENSE file for license details.

 */

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include "wm.h"

#define ButtonMask      (ButtonPressMask | ButtonReleaseMask)

#define MouseMask       (ButtonMask | PointerMotionMask)

static void

mmatch(Client *c, int x1, int y1, int x2, int y2)

{

	c->w = abs(x1 - x2);

	c->h = abs(y1 - y2);

	if(c->incw)

		c->w -= (c->w - c->basew) % c->incw;

	if(c->inch)

		c->h -= (c->h - c->baseh) % c->inch;

	if(c->minw && c->w < c->minw)

		c->w = c->minw;

	if(c->minh && c->h < c->minh)

		c->h = c->minh;

	if(c->maxw && c->w > c->maxw)

		c->w = c->maxw;

	if(c->maxh && c->h > c->maxh)

		c->h = c->maxh;

	c->x = (x1 <= x2) ? x1 : x1 - c->w;

	c->y = (y1 <= y2) ? y1 : y1 - c->h;

}

void

mresize(Client *c)

{

	XEvent ev;

	int old_cx, old_cy;

	old_cx = c->x;

	old_cy = c->y;

	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,

				None, cursor[CurResize], CurrentTime) != GrabSuccess)

		return;

	XGrabServer(dpy);

	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);

	for(;;) {

		XMaskEvent(dpy, MouseMask, &ev);

		switch(ev.type) {

		default: break;

		case MotionNotify:

			XUngrabServer(dpy);

			mmatch(c, old_cx, old_cy, ev.xmotion.x, ev.xmotion.y);

			XResizeWindow(dpy, c->win, c->w, c->h);

			XGrabServer(dpy);

			break;

		case ButtonRelease:

			resize(c);

			XUngrabServer(dpy);

			XUngrabPointer(dpy, CurrentTime);

			return;

		}

	}

}

void

mmove(Client *c)

{

	XEvent ev;

	int x1, y1, old_cx, old_cy, di;

	unsigned int dui;

	Window dummy;

	old_cx = c->x;

	old_cy = c->y;

	if(XGrabPointer(dpy, root, False, MouseMask, GrabModeAsync, GrabModeAsync,

				None, cursor[CurMove], CurrentTime) != GrabSuccess)

		return;

	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);

	XGrabServer(dpy);

	for(;;) {

		XMaskEvent(dpy, MouseMask, &ev);

		switch (ev.type) {

		default: break;

		case MotionNotify:

			XUngrabServer(dpy);

			c->x = old_cx + (ev.xmotion.x - x1);

			c->y = old_cy + (ev.xmotion.y - y1);

			XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);

			XGrabServer(dpy);

			break;

		case ButtonRelease:

			resize(c);

			XUngrabServer(dpy);

			XUngrabPointer(dpy, CurrentTime);

			return;

		}

	}

}