/* menu.h

Copyright (C) 1999-2003 Tom Gilbert.
Copyright (C) 2010-2011 Daniel Friesel.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies of the Software and its documentation and acknowledgment shall be
given in the documentation and software packages that this Software was
used.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

#ifndef MENU_H
#define MENU_H

typedef struct _feh_menu feh_menu;
typedef struct _feh_menu_item feh_menu_item;
typedef struct _feh_menu_list feh_menu_list;

#define MENU_ITEM_STATE_NORMAL   0x00
#define MENU_ITEM_STATE_SELECTED 0x01
#define MENU_ITEM_STATE_ON       0x02

#define MENU_ITEM_IS_SELECTED(item) \
((item)->state & MENU_ITEM_STATE_SELECTED)
#define MENU_ITEM_SET_NORMAL(item) \
(item)->state = (item)->state & (~MENU_ITEM_STATE_SELECTED)
#define MENU_ITEM_SET_SELECTED(item) \
(item)->state = (item)->state | MENU_ITEM_STATE_SELECTED

#define MENU_ITEM_IS_ON(item) \
((item)->state & MENU_ITEM_STATE_ON)
#define MENU_ITEM_TOGGLE_ON(item) \
((item)->state |= MENU_ITEM_STATE_ON)
#define MENU_ITEM_TOGGLE_OFF(item) \
((item)->state &= ~(MENU_ITEM_STATE_ON))
#define MENU_ITEM_TOGGLE_SET(item, setting) \
((setting) ? MENU_ITEM_TOGGLE_ON(item) : MENU_ITEM_TOGGLE_OFF(item))
#define MENU_ITEM_TOGGLE(item) \
(((item)->state & MENU_ITEM_STATE_ON) ? MENU_ITEM_TOGGLE_OFF(item) : MENU_ITEM_TOGGLE_ON(item))

#define RECTS_INTERSECT(x, y, w, h, xx, yy, ww, hh) \
((SPANS_COMMON((x), (w), (xx), (ww))) && (SPANS_COMMON((y), (h), (yy), (hh))))
#define SPANS_COMMON(x1, w1, x2, w2) \
(!((((x2) + (w2)) <= (x1)) || ((x2) >= ((x1) + (w1)))))

#define FEH_MENU_PAD_LEFT 3
#define FEH_MENU_PAD_RIGHT 3
#define FEH_MENU_PAD_TOP 3
#define FEH_MENU_PAD_BOTTOM 3

#define FEH_MENUITEM_PAD_LEFT 2
#define FEH_MENUITEM_PAD_RIGHT 2
#define FEH_MENUITEM_PAD_TOP 1
#define FEH_MENUITEM_PAD_BOTTOM 1

#define FEH_MENU_SEP_MAX_H 5

#define FEH_MENU_SUBMENU_H 14
#define FEH_MENU_SUBMENU_W 9

#define FEH_MENU_TOGGLE_H 7
#define FEH_MENU_TOGGLE_W 7
#define FEH_MENU_TOGGLE_PAD 3

typedef feh_menu *(*menuitem_func_gen) (feh_menu * m);

struct _feh_menu_list {
	feh_menu *menu;
	feh_menu_list *next;
};

struct _feh_menu_item {
	int state;
	char *text;
	char *submenu;
	int action;
	void (*func_free) (void *data);
	unsigned short data;
	feh_menu_item *next;
	feh_menu_item *prev;
	unsigned char is_toggle;
	int text_x, icon_x, sub_x, toggle_x;
	int x, y, w, h;
	menuitem_func_gen func_gen_sub;
};

struct _feh_menu {
	char *name;
	winwidget fehwin;
	Window win;
	Pixmap pmap;
	int x, y, w, h;
	int item_w, item_h;
	int visible;
	feh_menu_item *items;
	feh_menu *next;
	feh_menu *prev;
	Imlib_Updates updates;
	Imlib_Image bg;
	int needs_redraw;
	void *data;
	int calc;
	void (*func_free) (feh_menu * m);
};

feh_menu *feh_menu_new(void);

feh_menu_item *feh_menu_find_selected(feh_menu * m);
feh_menu_item *feh_menu_find_at_xy(feh_menu * m, int x, int y);
void feh_menu_deselect_selected(feh_menu * m);
void feh_menu_select(feh_menu * m, feh_menu_item * i);
void feh_menu_show_at(feh_menu * m, int x, int y);
void feh_menu_show_at_xy(feh_menu * m, winwidget winwin, int x, int y);
void feh_menu_show_at_submenu(feh_menu * m, feh_menu * parent_m, feh_menu_item * i);
void feh_menu_hide(feh_menu * m, int func_free);
void feh_menu_show(feh_menu * m);
feh_menu_item *feh_menu_add_entry(feh_menu * m, char *text,
	char *submenu,
	int action, unsigned short data, void (*func_free) (void *data));
feh_menu_item *feh_menu_add_toggle_entry(feh_menu * m, char *text,
	char *submenu,
	int action, unsigned short data, void (*func_free) (void *data), int setting);
void feh_menu_entry_get_size(feh_menu_item * i, int *w, int *h);
void feh_menu_calc_size(feh_menu * m);
void feh_menu_draw_item(feh_menu_item * i, Imlib_Image im, int ox, int oy);
void feh_menu_redraw(feh_menu * m);
void feh_menu_move(feh_menu * m, int x, int y);
void feh_menu_slide_all_menus_relative(int dx, int dy);
void feh_menu_init_main(void);
void feh_menu_init_single_win(void);
void feh_menu_init_common(void);
void feh_menu_init_thumbnail_viewer(void);
void feh_menu_init_thumbnail_win(void);
void feh_menu_draw_to_buf(feh_menu * m, Imlib_Image im, int ox, int oy);
void feh_menu_draw_menu_bg(feh_menu * m, Imlib_Image im, int ox, int oy);
void feh_menu_draw_submenu_at(int x, int y, Imlib_Image dst, int ox, int oy);
void feh_menu_draw_separator_at(int x, int y, int w, int h, Imlib_Image dst, int ox, int oy);
void feh_menu_item_draw_at(int x, int y, int w, int h, Imlib_Image dst, int ox, int oy, int selected);
void feh_menu_draw_toggle_at(int x, int y, int w, int h, Imlib_Image dst, int ox, int oy, int on);
void feh_redraw_menus(void);
feh_menu *feh_menu_find(char *name);
void feh_redraw_menus(void);
feh_menu *feh_menu_get_from_window(Window win);
void feh_raise_all_menus(void);
void feh_menu_free(feh_menu * m);
feh_menu_item *feh_menu_find_selected_r(feh_menu * m, feh_menu ** parent);
void feh_menu_select_prev(feh_menu * selected_menu, feh_menu_item * selected_item);
void feh_menu_select_next(feh_menu * selected_menu, feh_menu_item * selected_item);
void feh_menu_item_activate(feh_menu * selected_menu, feh_menu_item * selected_item);
void feh_menu_select_parent(feh_menu * selected_menu);
void feh_menu_select_submenu(feh_menu * selected_menu);

extern feh_menu *menu_root;
extern feh_menu *menu_single_win;
extern feh_menu *menu_thumbnail_viewer;
extern feh_menu *menu_thumbnail_win;
extern Window menu_cover;

#endif
