/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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/>.
 *
 */

#ifndef M4_BURGER_GUI_GIZMO_H
#define M4_BURGER_GUI_GIZMO_H

#include "common/rect.h"
#include "m4/m4_types.h"
#include "m4/gui/gui_vmng_core.h"
#include "m4/graphics/gr_buff.h"
#include "m4/burger/gui/inventory.h"

namespace M4 {
namespace Burger {
namespace GUI {

#define _GIZMO(X) g_vars->_gizmo._##X

struct Gizmo;
struct GizmoItem;

struct Gizmo_Globals {
	bool _initialized = false;
	bool _interface_visible = false;
	Gizmo *_gui = nullptr;
	RGB8 *_palette = nullptr;
	bool _lowMemory1 = false;
	bool _lowMemory2 = false;
	GizmoItem *_currentItem = nullptr;
	MemHandle _seriesHandle = nullptr;
	int32 _celsOffset = 0;
	int32 _palOffset = 0;
	char *_assetName = nullptr;
	int _spriteCount = 0;
	M4sprite **_sprites = nullptr;
	bool _roomFlags[15];

	bool _savedFlag = false;
	int _savedX = 0;
	int _savedY = 0;

	Gizmo_Globals();
	~Gizmo_Globals();
};

struct Gizmo {
	GrBuff *_grBuff = nullptr;
	GizmoItem *_items = nullptr;
	void (*_fnEnter)() = nullptr;
	void (*_fnEscape)() = nullptr;
	EventHandler _fnEvents = nullptr;
};

struct GizmoButton {
	ControlStatus _state = NOTHING;
	int _index = 0;
	int _field8 = 0;
	int _fieldC = 0;
	int _field10 = 0;
};

typedef void (*GizmoItemFnSelect)();
typedef void (*GizmoItemFnDraw)(GizmoItem *item, Gizmo *gizmo, int x, int y);
typedef void (*GizmoItemFnFree)(GizmoItem *item);
typedef bool (*GizmoItemFnEvents)(GizmoItem *item, int eventType, int event, int x, int y,
	GizmoItem **currentItem);

struct GizmoItem {
	GizmoItem *_next = nullptr;
	GizmoItem *_prior = nullptr;
	Gizmo *_gizmo = nullptr;
	GrBuff *_grBuff = nullptr;
	GizmoButton *_button = nullptr;

	int _id = 0;
	Common::Rect _bounds;
	Common::Rect _btnRect;
	bool _hasBuffer = false;
	GizmoItemFnSelect _select = nullptr;
	GizmoItemFnDraw _fnDraw = nullptr;
	GizmoItemFnFree _fnFree = nullptr;
	GizmoItemFnEvents _fnEvents = nullptr;
};

void gizmo_anim(RGB8 *pal);
void gizmo_initialize(RGB8 *pal);
void gizmo_shutdown(void *v1 = nullptr, void *v2 = nullptr);
void gizmo_digi_play(const char *name, int vol, bool &done);

} // namespace GUI
} // namespace Burger
} // namespace M4

#endif