core/ASCOfficePPTXFile/PPTXFormat/Logic/Camera.h

/*
 * (c) Copyright Ascensio System SIA 2010-2019
 *
 * 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. In accordance with
 * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
 * that Ascensio System SIA expressly excludes the warranty of non-infringement
 * of any third-party rights.
 *
 * 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: http://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
 * street, Riga, Latvia, EU, LV-1050.
 *
 * The  interactive user interfaces in modified source and object code versions
 * of the Program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU AGPL version 3.
 *
 * Pursuant to Section 7(b) of the License you must retain the original Product
 * logo when distributing the program. Pursuant to Section 7(e) we decline to
 * grant you any rights under trademark law for use of our trademarks.
 *
 * All the Product's GUI elements, including illustrations and icon sets, as
 * well as technical writing content are licensed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International. See the License
 * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 */
#pragma once
#ifndef PPTX_LOGIC_CAMERA_INCLUDE_H_
#define PPTX_LOGIC_CAMERA_INCLUDE_H_

#include "./../WrapperWritingElement.h"
#include "Rot.h"
#include "./../Limit/CameraType.h"

namespace PPTX
{
	namespace Logic
	{

		class Camera : public WrapperWritingElement
		{
		public:
			WritingElement_AdditionConstructors(Camera)
			PPTX_LOGIC_BASE2(Camera)

			virtual OOX::EElementType getType() const
			{
				return OOX::et_a_camera;
			}	
			void fromXML(XmlUtils::CXmlLiteReader& oReader)
			{
				ReadAttributes( oReader );

				if ( oReader.IsEmptyNode() )
					return;

				int nCurDepth = oReader.GetDepth();
				while( oReader.ReadNextSiblingNode( nCurDepth ) )
				{
					std::wstring strName = oReader.GetName();

					if (strName == L"a:rot")
					{
						rot = oReader;
						break;
					}
				}
				FillParentPointersForChilds();
			}
			void ReadAttributes(XmlUtils::CXmlLiteReader& oReader)
			{
				WritingElement_ReadAttributes_Start_No_NS( oReader )
					WritingElement_ReadAttributes_Read_if		( oReader, _T("prst"), prst)
					WritingElement_ReadAttributes_Read_else_if	( oReader, _T("fov"), fov)
					WritingElement_ReadAttributes_Read_else_if	( oReader, _T("zoom"), zoom)
				WritingElement_ReadAttributes_End_No_NS( oReader )
			}
			virtual void fromXML(XmlUtils::CXmlNode& node)
			{
				prst	= node.GetAttribute(_T("prst"));
				XmlMacroReadAttributeBase(node, L"fov", fov);
				XmlMacroReadAttributeBase(node, L"zoom", zoom);

                std::wstring sRotNodeName = _T("a:rot");
                rot		= node.ReadNode(sRotNodeName);
				FillParentPointersForChilds();
			}

			virtual std::wstring toXML() const
			{
				XmlUtils::CAttribute oAttr;
				oAttr.Write(_T("prst"), prst.get());
				oAttr.Write(_T("fov"), fov);
				oAttr.Write(_T("zoom"), zoom);

				XmlUtils::CNodeValue oValue;
				oValue.WriteNullable(rot);

				return XmlUtils::CreateNode(_T("a:camera"), oAttr, oValue);
			}
			virtual void toXmlWriter(NSBinPptxRW::CXmlWriter* pWriter) const
			{
				pWriter->StartNode(_T("a:camera"));

				pWriter->StartAttributes();
				pWriter->WriteAttribute(_T("prst"), prst.get());
				pWriter->WriteAttribute(_T("fov"), fov);
				pWriter->WriteAttribute(_T("zoom"), zoom);
				pWriter->EndAttributes();

				pWriter->Write(rot);

				pWriter->EndNode(_T("a:camera"));
			}

			virtual void toPPTY(NSBinPptxRW::CBinaryFileWriter* pWriter) const
			{
				pWriter->WriteBYTE(NSBinPptxRW::g_nodeAttributeStart);
				pWriter->WriteLimit1(0, prst);
				pWriter->WriteInt2(1, fov);
				pWriter->WriteInt2(2, zoom);
				pWriter->WriteBYTE(NSBinPptxRW::g_nodeAttributeEnd);
				
				pWriter->WriteRecord2(0, rot);
			}
			virtual void fromPPTY(NSBinPptxRW::CBinaryFileReader* pReader)
			{
				LONG _end_rec = pReader->GetPos() + pReader->GetLong() + 4;

				pReader->Skip(1); // start attributes

				while (true)
				{
					BYTE _at = pReader->GetUChar_TypeNode();
					if (_at == NSBinPptxRW::g_nodeAttributeEnd)
						break;

					if (0 == _at)		prst.SetBYTECode(pReader->GetUChar());
					else if (1 == _at)	fov	= pReader->GetLong();
					else if (2 == _at)	zoom	= pReader->GetLong();
					else
						break;
				}

				while (pReader->GetPos() < _end_rec)
				{
					BYTE _at = pReader->GetUChar();
					switch (_at)
					{
						case 0:
						{
							rot = new Logic::Rot();
							rot->fromPPTY(pReader);
							break;
						}
						default:
							break;
					}
				}

				pReader->Seek(_end_rec);
			}
			
			nullable<Rot>		rot;

			Limit::CameraType	prst;
			nullable_int		fov;
			nullable_int		zoom;
		protected:
			virtual void FillParentPointersForChilds()
			{
				if(rot.IsInit())
					rot->SetParentPointer(this);
			}

			AVSINLINE void Normalize()
			{
				fov.normalize(0, 10800000);
				zoom.normalize_positive();
			}
		};
	} // namespace Logic
} // namespace PPTX

#endif // PPTX_LOGIC_CAMERA_INCLUDE_H_