/*
winnie - an experimental window system

Copyright (C) 2013 Eleni Maria Stea

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 3 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.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

Author: Eleni Maria Stea <elene.mst@gmail.com>
*/

#ifndef WM_H_
#define WM_H_

#include <list>

#include "geom.h"
#include "pixmap.h"
#include "winnie.h"

class Window;

bool init_window_manager();
void destroy_window_manager();

bool client_open_wm(void *smem_start, int offset);
void client_close_wm();

class WindowManager {
private:
	std::list<Window*> windows;

	std::list<Rect> dirty_rects;

	int bg_color[3];
	int frame_thickness;
	int titlebar_thickness;
	int frame_fcolor[3];
	int frame_ucolor[3];
	int bevel_sz;

	Window *root_win;
	Window *focused_win;
	Window *grab_win;

	Pixmap mouse_cursor;
	Pixmap *background;

	void create_frame(Window *win);
	void destroy_frame(Window *win);

public:
	WindowManager();
	~WindowManager();

	void invalidate_region(const Rect &rect);
	void process_windows();

	void add_window(Window *win);
	void remove_window(Window *win);

	void set_focused_window(Window *win);
	const Window *get_focused_window() const;
	Window *get_focused_window();

	Window *get_window_at_pos(int pointer_x, int pointer_y);
	Window *get_root_window() const;

	void set_focused_frame_color(int r, int g, int b);
	void get_focused_frame_color(int *r, int *g, int *b) const;

	void set_unfocused_frame_color(int r, int g, int b);
	void get_unfocused_frame_color(int *r, int *g, int *b) const;

	void set_frame_size(int sz);
	int get_frame_size() const;

	void set_titlebar_size(int sz);
	int get_titlebar_size() const;

	void set_bevel_size(int sz);
	int get_bevel_size() const;

	void set_background_color(int r, int g, int b);
	void get_background_color(int *r, int *g, int *b) const;

	void set_background(const Pixmap *pixmap);
	const Pixmap *get_background() const;

	Window *get_grab_window() const;

	void grab_mouse(Window *win);
	void release_mouse();

	void raise_window(Window *win);
	void sink_window(Window *win);

	void maximize_window(Window *win);
	void unmaximize_window(Window *win);
};

extern WindowManager *wm;

#endif	// WM_H_