/*
 * Copyright (C) Ascensio System SIA, 2009-2026
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation, together with the
 * additional terms provided in the LICENSE file.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
 * details, see the GNU AGPL at: https://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA by email at info@onlyoffice.com
 * or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
 * LV-1050, Latvia, European Union.
 *
 * The interactive user interfaces in modified versions of the Program
 * are required to display Appropriate Legal Notices in accordance with
 * Section 5 of the GNU AGPL version 3.
 *
 * No trademark rights are granted under this License.
 *
 * All non-code elements of the Product, including illustrations,
 * icon sets, and technical writing content, are licensed under the
 * Creative Commons Attribution-ShareAlike 4.0 International License:
 * https://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 * This license applies only to such non-code elements and does not
 * modify or replace the licensing terms applicable to the Program's
 * source code, which remains licensed under the GNU Affero General
 * Public License v3.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */
#pragma once

#include "IVisitable.h"

namespace DocFileFormat
{
	typedef enum _ShadingPattern
	{
		Automatic = 0x0000,
		Solid = 0x0001,
		Percent_5 = 0x0002,
		Percent_10 = 0x0003,
		Percent_20 = 0x0004,
		Percent_25 = 0x0005,
		Percent_30 = 0x0006,
		Percent_40 = 0x0007,
		Percent_50 = 0x0008,
		Percent_60 = 0x0009,
		Percent_70 = 0x000A,
		Percent_75 = 0x000B,
		Percent_80 = 0x000C,
		Percent_90 = 0x000D,
		DarkHorizontal = 0x000E,
		DarkVertical = 0x000F,
		DarkForwardDiagonal = 0x0010,
		DarkBackwardDiagonal = 0x0011,
		DarkCross = 0x0012,
		DarkDiagonalCross = 0x0013,
		Horizontal = 0x0014,
		Vertical = 0x0015,
		ForwardDiagonal = 0x0016,
		BackwardDiagonal = 0x0017,
		Cross = 0x0018,
		DiagonalCross = 0x0019,
		Percent_2_5 = 0x0023,
		Percent_7_5 = 0x0024,
		Percent_12_5 = 0x0025,
		Percent_15 = 0x0026,
		Percent_17_5 = 0x0027,
		Percent_22_5 = 0x0028,
		Percent_27_5 = 0x0029,
		Percent_32_5 = 0x002A,
		Percent_35 = 0x002B,
		Percent_37_5 = 0x002C,
		Percent_42_5 = 0x002D,
		Percent_45 = 0x002E,
		Percent_47_5 = 0x002F,
		Percent_52_5 = 0x0030,
		Percent_55 = 0x0031,
		Percent_57_5 = 0x0032,
		Percent_62_5 = 0x0033,
		Percent_65 = 0x0034,
		Percent_67_5 = 0x0035,
		Percent_72_5 = 0x0036,
		Percent_77_5 = 0x0037,
		Percent_82_5 = 0x0038,
		Percent_85 = 0x0039,
		Percent_87_5 = 0x003A,
		Percent_92_5 = 0x003B,
		Percent_95 = 0x003C,
		Percent_97_5 = 0x003D,
		Nil = 0xFFFF
	} ShadingPattern;

	enum ShadingType
	{
		shadingTypeShd,
		shadingTypeShd80
	};

	enum ShadingSpecialValue
	{
		shadingSpecialValueNormal,
		shadingSpecialValueShdAuto,
		shadingSpecialValueShdNil,
		shadingSpecialValueShd80Nil
	};

	class ShadingDescriptor: public IVisitable
	{
		friend class PropertiesMapping;

	private:   
		unsigned int		cvFore;			// 24-bit foreground color
		bool				cvForeAuto;
		int					icoFore;		// Foreground color.
		unsigned int		cvBack;
		bool				cvBackAuto;
		int					icoBack;
		ShadingPattern		ipat;
		ShadingType			shadingType;
		ShadingSpecialValue shadingSpecialValue;

	public:
		/// Creates a new ShadingDescriptor with default values
		ShadingDescriptor();

		/// Parses the bytes to retrieve a ShadingDescriptor.
		ShadingDescriptor(unsigned char* bytes, int size);

	private:
		inline unsigned int RGB2 (unsigned char r, unsigned char g, unsigned char b)
		{
			return ( (r<<16) | (g<<8) | (b) );
		}

		void setDefaultValues();
	};
}