mirror of
https://github.com/ONLYOFFICE/core.git
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310 lines
7.8 KiB
C++
310 lines
7.8 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2019
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*
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* This program is a free software product. You can redistribute it and/or
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* modify it under the terms of the GNU Affero General Public License (AGPL)
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* version 3 as published by the Free Software Foundation. In accordance with
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* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
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* that Ascensio System SIA expressly excludes the warranty of non-infringement
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* of any third-party rights.
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*
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* This program is distributed WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
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* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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*
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* You can contact Ascensio System SIA at 20A-12 Ernesta Birznieka-Upisha
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* street, Riga, Latvia, EU, LV-1050.
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*
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* The interactive user interfaces in modified source and object code versions
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* of the Program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU AGPL version 3.
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*
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* Pursuant to Section 7(b) of the License you must retain the original Product
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* logo when distributing the program. Pursuant to Section 7(e) we decline to
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* grant you any rights under trademark law for use of our trademarks.
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*
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* All the Product's GUI elements, including illustrations and icon sets, as
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* well as technical writing content are licensed under the terms of the
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* Creative Commons Attribution-ShareAlike 4.0 International. See the License
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* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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*
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*/
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#ifndef _PDF_READER_PAGE_H
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#define _PDF_READER_PAGE_H
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#include "Object.h"
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#include "GlobalParams.h"
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namespace PdfReader
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{
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class Dict;
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class XRef;
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class OutputDev;
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class Links;
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class Catalog;
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//------------------------------------------------------------------------
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class PDFRectangle
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{
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public:
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PDFRectangle()
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{
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m_dLeft = m_dBottom = m_dRight = m_dTop = 0;
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}
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PDFRectangle(double dLeft, double dBottom, double dRight, double dTop)
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{
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m_dLeft = dLeft;
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m_dBottom = dBottom;
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m_dRight = dRight;
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m_dTop = dTop;
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}
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bool IsValid()
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{
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return m_dLeft != 0 || m_dBottom != 0 || m_dRight != 0 || m_dTop != 0;
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}
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void ClipTo(PDFRectangle *pRect);
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public:
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double m_dLeft;
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double m_dBottom;
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double m_dRight;
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double m_dTop;
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};
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//------------------------------------------------------------------------
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// PageAttrs
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//------------------------------------------------------------------------
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class PageAttrs
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{
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public:
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// Строим новый объект PageAttrs либо с начальными настройками из
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// pAttrs, либо со стандартными начальными настройками(если pAttrs =
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// NULL).
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PageAttrs(PageAttrs *pAttrs, Dict *pDict);
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~PageAttrs();
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PDFRectangle *GetMediaBox()
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{
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return &m_oMediaBox;
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}
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PDFRectangle *GetCropBox()
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{
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return &m_pCropBox;
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}
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bool IsCropped()
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{
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return m_bHaveCropBox;
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}
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PDFRectangle *GetBleedBox()
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{
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return &m_oBleedBox;
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}
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PDFRectangle *GetTrimBox()
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{
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return &m_oTrimBox;
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}
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PDFRectangle *GetArtBox()
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{
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return &m_oArtBox;
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}
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int GetRotate()
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{
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return m_nRotate;
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}
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StringExt *GetLastModified()
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{
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return (m_oLastModified.IsString() ? m_oLastModified.GetString() : (StringExt *)NULL);
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}
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Dict *GetBoxColorInfo()
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{
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return (m_oBoxColorInfo.IsDict() ? m_oBoxColorInfo.GetDict() : (Dict *)NULL);
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}
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Dict *GetGroup()
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{
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return (m_oGroup.IsDict() ? m_oGroup.GetDict() : (Dict *)NULL);
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}
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Stream *GetMetadata()
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{
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return (m_oMetadata.IsStream() ? m_oMetadata.GetStream() : (Stream *)NULL);
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}
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Dict *GetPieceInfo()
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{
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return (m_oPieceInfo.IsDict() ? m_oPieceInfo.GetDict() : (Dict *)NULL);
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}
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Dict *GetSeparationInfo()
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{
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return (m_oSeparationInfo.IsDict() ? m_oSeparationInfo.GetDict() : (Dict *)NULL);
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}
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Dict *GetResourceDict()
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{
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return (m_oResources.IsDict() ? m_oResources.GetDict() : (Dict *)NULL);
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}
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private:
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bool ReadBox(Dict *pDict, char *sKey, PDFRectangle *pBox);
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private:
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PDFRectangle m_oMediaBox;
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PDFRectangle m_pCropBox;
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bool m_bHaveCropBox;
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PDFRectangle m_oBleedBox;
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PDFRectangle m_oTrimBox;
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PDFRectangle m_oArtBox;
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int m_nRotate;
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Object m_oLastModified;
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Object m_oBoxColorInfo;
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Object m_oGroup;
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Object m_oMetadata;
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Object m_oPieceInfo;
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Object m_oSeparationInfo;
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Object m_oResources;
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};
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//------------------------------------------------------------------------
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// Page
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//------------------------------------------------------------------------
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class Page
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{
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public:
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Page(GlobalParams *pGlobalParams, XRef *pXref, int nNum, Dict *pPageDict, PageAttrs *pAttrs);
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~Page();
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bool IsValid()
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{
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return m_bValid;
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}
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int GetNum()
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{
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return m_nNumber;
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}
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PDFRectangle *GetMediaBox()
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{
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return m_pAttrs->GetMediaBox();
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}
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PDFRectangle *GetCropBox()
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{
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return m_pAttrs->GetCropBox();
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}
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bool IsCropped()
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{
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return m_pAttrs->IsCropped();
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}
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double GetMediaWidth()
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{
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return m_pAttrs->GetMediaBox()->m_dRight - m_pAttrs->GetMediaBox()->m_dLeft;
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}
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double GetMediaHeight()
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{
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return m_pAttrs->GetMediaBox()->m_dTop - m_pAttrs->GetMediaBox()->m_dBottom;
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}
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double GetCropWidth()
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{
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return m_pAttrs->GetCropBox()->m_dRight - m_pAttrs->GetCropBox()->m_dLeft;
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}
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double GetCropHeight()
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{
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return m_pAttrs->GetCropBox()->m_dTop - m_pAttrs->GetCropBox()->m_dBottom;
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}
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PDFRectangle *GetBleedBox()
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{
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return m_pAttrs->GetBleedBox();
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}
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PDFRectangle *GetTrimBox()
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{
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return m_pAttrs->GetTrimBox();
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}
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PDFRectangle *GetArtBox()
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{
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return m_pAttrs->GetArtBox();
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}
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int GetRotate()
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{
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return m_pAttrs->GetRotate();
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}
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StringExt *GetLastModified()
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{
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return m_pAttrs->GetLastModified();
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}
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Dict *GetBoxColorInfo()
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{
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return m_pAttrs->GetBoxColorInfo();
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}
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Dict *GetGroup()
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{
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return m_pAttrs->GetGroup();
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}
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Stream *GetMetadata()
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{
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return m_pAttrs->GetMetadata();
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}
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Dict *GetPieceInfo()
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{
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return m_pAttrs->GetPieceInfo();
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}
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Dict *GetSeparationInfo()
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{
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return m_pAttrs->GetSeparationInfo();
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}
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// Resource
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Dict *GetResourceDict()
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{
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return m_pAttrs->GetResourceDict();
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}
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// Annotations
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Object *GetAnnots(Object *pObject)
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{
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return m_oAnnots.Fetch(m_pXref, pObject);
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}
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// Links
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Links *GetLinks(Catalog *catalog);
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// Contents
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Object *GetContents(Object *pObject)
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{
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return m_oContents.Fetch(m_pXref, pObject);
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}
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//
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void Display(OutputDev *pOut, double dHorizDPI, double dVertDPI, int nRotate, bool bUseMediaBox, bool bCrop, bool bPrinting, Catalog *pCatalog, bool(*abortCheckCbk)(void *pData) = NULL, void *abortCheckCbkData = NULL);
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void DisplaySlice(OutputDev *pOut, double dHorizDPI, double dVertDPI, int nRotate, bool bUseMediaBox, bool bCrop, int nSliceX, int nSliceY, int nSliceW, int nSliceH, bool bPrinting, Catalog *pCatalog, bool(*abortCheckCbk)(void *pData) = NULL, void *abortCheckCbkData = NULL);
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void MakeBox(double dHorizDPI, double dVertDPI, int nRotate, bool bUseMediaBox, bool bUpSideDown, double dSliceX, double dSliceY, double dSliceW, double dSliceH, PDFRectangle *pBox, bool *pbCrop);
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void ProcessLinks(OutputDev *pOut, Catalog *pCatalog);
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void GetDefaultCTM(double *pCTM, double dHorizDPI, double dVertDPI, int nRotate, bool bUseMediaBox, bool bUpSideDown);
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private:
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XRef *m_pXref; // Таблица xref для данного PDF документа
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int m_nNumber; // Номер страницы
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PageAttrs *m_pAttrs; // Page attributes
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Object m_oAnnots; // Annotations
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Object m_oContents; // Содержимое страницы
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Object m_oContents2;
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bool m_bValid; //
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GlobalParams *m_pGlobalParams;
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};
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}
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#endif // _PDF_READER_PAGE_H
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