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/**
 * wormouse.h
 *
 * Copyright (c) 2010 Rodolfo Granata <warlock.cc@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 **/

#include <core/core.h>
#include <core/pluginclasshandler.h>
#include <mousepoll/mousepoll.h>
#include <cairo/cairo.h>

extern "C" {
#include <X11/Xcursor/Xcursor.h>
#include <X11/extensions/Xfixes.h>
}

#include "wormouse_options.h"

#define _CACHE_ROTATION_

class WormouseScreen :
    public PluginClassHandler <WormouseScreen, CompScreen>,
    public WormouseOptions
{
	public:
	WormouseScreen (CompScreen *s);
	~WormouseScreen ();

  bool loadCursor (CompString &path, int hotx, int hoty,
                   float tail_dist, float image_angle);
  void mouseMove (const CompPoint &pos);
  bool updateConfig (CompOption *opt, Options num);


  private:
  void freeResources ();
  void rotateCursor (double radians);
#ifdef _CACHE_ROTATION_
  bool buildCache (const CompString &path);
#endif

  // workbench for cursor rotation
#ifdef _CACHE_ROTATION_
  XcursorPixel *imageCache[360];
#else
  cairo_surface_t *img;
  cairo_surface_t *work;
  cairo_t *cr;
#endif
  Cursor cursor;
  XcursorImage *xci;
  MousePoller poller;

  // math specific
  // coords from wich to take rotation
  float piv_x, piv_y, tail_d;
  // image dimensions, radius, compensation angle (for non standard cursors)
  float wrk_w, wrk_h, wrk_r, wrk_a;
  // hotspot location (polar coords)
  float hot_a, hot_d;

  // option cache
  bool show_hotspot;
};

/* boilerplate */

#define WMOUSE_SCREEN(screen) \
WormouseScreen *ws = WormouseScreen::get (screen);

class WormousePluginVTable :
    public CompPlugin::VTableForScreen<WormouseScreen>
{
    public:
	bool init ();
};