menu.h

#pragma once

#include <_cheader.h>
#include <sirius/graphics.h>
#include <sirius/hashmap.h>
#include <sirius/list.h>
#include <sirius/yutani-ng.h>

_Begin_C_Header

enum MenuEntry_Type {
	MenuEntry_Unknown,
	MenuEntry_Normal,
	MenuEntry_Submenu,
	MenuEntry_Separator,
};

struct MenuList;
struct MenuEntry;

struct MenuEntryVTable {
	size_t methods;
	void (*renderer)(gfx_context_t *, struct MenuEntry *, int);
	void (*focus_change)(struct MenuEntry *, int);
	void (*activate)(struct MenuEntry *, int);
	int (*mouse_event)(struct MenuEntry *, struct yutani_msg_window_mouse_event *);
};

struct MenuEntry {
	enum MenuEntry_Type _type;
	struct MenuList * _owner;
	void * _private;

	int height; /* All must have a height, so put it here. */
	int width; /* Actual width */
	int rwidth; /* Requested width */
	int hilight; /* Is currently hilighted */
	int offset; /* Our offset when we were rendered */

	struct MenuEntryVTable * vtable;
	void (*callback)(struct MenuEntry *);
};

struct MenuEntry_Normal {
	struct MenuEntry; /* dependent on plan9 extensions */
	char * icon;
	char * title;
	char * action;
};

struct MenuEntry_Submenu {
	struct MenuEntry;
	char * icon;
	char * title;
	char * action;
	struct MenuList * _my_child;
};

struct MenuEntry_Separator {
	struct MenuEntry;
};

struct MenuList {
	list_t * entries;
	gfx_context_t * ctx;
	yutani_window_t * window;
	struct MenuSet * set;
	struct MenuList * child;
	struct MenuList * parent;
	struct menu_bar * _bar;
	int closed;
	int flags;
	int tail_offset;
};

struct MenuSet {
	hashmap_t * _menus;
};

extern struct MenuEntry * menu_create_normal(const char * icon, const char * action, const char * title, void (*callback)(struct MenuEntry *));
extern struct MenuEntry * menu_create_submenu(const char * icon, const char * action, const char * title);
extern struct MenuEntry * menu_create_separator(void);
extern struct MenuList * menu_create(void);
extern struct MenuSet * menu_set_from_description(const char * path, void (*callback)(struct MenuEntry *));

extern void menu_insert(struct MenuList * menu, struct MenuEntry * entry);
extern void menu_prepare(struct MenuList * menu, yutani_t * yctx);
extern void menu_show(struct MenuList * menu, yutani_t * yctx);
extern void menu_show_at(struct MenuList * menu, yutani_window_t * parent, int x, int y);
extern int menu_process_event(yutani_t * yctx, yutani_msg_t * m);
extern struct MenuList * menu_set_get_root(struct MenuSet * menu);
extern struct MenuList * menu_set_get_menu(struct MenuSet * menu, char * submenu);
extern void menu_calculate_dimensions(struct MenuList * menu, int * height, int * width);

extern void menu_free_entry(struct MenuEntry * ptr);
extern void menu_free_menu(struct MenuList * ptr);
extern void menu_free_set(struct MenuSet * ptr);

extern hashmap_t * menu_get_windows_hash(void);
extern int menu_definitely_close(struct MenuList * menu);
extern struct MenuSet * menu_set_create(void);
extern void menu_set_insert(struct MenuSet * set, char * action, struct MenuList * menu);
extern void menu_update_title(struct MenuEntry * self, char * new_title);
extern void menu_force_redraw(struct MenuList * menu);
extern void menu_update_icon(struct MenuEntry * self, char * newIcon);

#define MENU_FLAG_BUBBLE_CENTER (1 << 0)
#define MENU_FLAG_BUBBLE_LEFT   (1 << 1)
#define MENU_FLAG_BUBBLE_RIGHT  (1 << 2)
#define MENU_FLAG_BUBBLE (MENU_FLAG_BUBBLE_LEFT | MENU_FLAG_BUBBLE_RIGHT | MENU_FLAG_BUBBLE_CENTER)
#define MENU_FLAG_TAIL_POSITION (1 << 3)

#define MENU_BAR_HEIGHT 24

struct menu_bar_entries {
	char * title;
	char * action;
};

struct menu_bar {
	int x;
	int y;
	int width;

	struct menu_bar_entries * entries;

	struct MenuSet * set;

	struct menu_bar_entries * active_entry;
	struct MenuList * active_menu;
	int active_menu_wid;
	int active_entry_idx;
	yutani_window_t * window;

	int num_entries;

	void * _private;
	void (*redraw_callback)(struct menu_bar *);
};

extern void menu_bar_render(struct menu_bar * self, gfx_context_t * ctx);
extern int menu_bar_mouse_event(yutani_t * yctx, yutani_window_t * window, struct menu_bar * self, struct yutani_msg_window_mouse_event * me, int x, int y);
extern void menu_bar_show_menu(yutani_t * yctx, yutani_window_t * window, struct menu_bar * self, int offset, struct menu_bar_entries * _entries);

_End_C_Header