302 lines
14 KiB
C++
302 lines
14 KiB
C++
/*
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* (c) Copyright Ascensio System SIA 2010-2023
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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-6 Ernesta Birznieka-Upish
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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_RENDERER_OUTPUTDEV_H
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#define _PDF_READER_RENDERER_OUTPUTDEV_H
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#include "../../DesktopEditor/graphics/IRenderer.h"
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#include "../../DesktopEditor/graphics/pro/Fonts.h"
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#include "../../DesktopEditor/graphics/AlphaMask.h"
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#include "../../DesktopEditor/graphics/TemporaryCS.h"
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#include "../../DesktopEditor/graphics/structures.h"
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#include "../lib/xpdf/Gfx.h"
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#include "../lib/xpdf/OutputDev.h"
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#include "GfxClip.h"
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#include <stack>
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namespace PdfReader
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{
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//-------------------------------------------------------------------------------------------------------------------------------
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struct TFontEntry
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{
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std::wstring wsFilePath; // Путь к шрифту на диске
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std::wstring wsFontName; // Имя шрифта, которое записано в PDF(ветка для случаев, когда имя шрифта в самом шрифте не указано)
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int* pCodeToGID; // Таблица код - номер глифа в шрифте
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int* pCodeToUnicode; // Таблица код - юникодное значение
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unsigned int unLenGID;
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unsigned int unLenUnicode;
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bool bAvailable; // Доступен ли шрифт. Сделано для многопотоковости
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};
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class CPdfFontList
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{
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public:
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CPdfFontList();
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~CPdfFontList();
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bool Find(Ref oRef, TFontEntry* pEntry);
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bool Find2(Ref oRef, TFontEntry** ppEntry);
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void Remove(Ref oRef);
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TFontEntry* Add(Ref oRef, const std::wstring& wsFileName, int* pCodeToGID, int* pCodeToUnicode, unsigned int unLenGID, unsigned int unLenUnicode);
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void Clear();
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bool GetFont(Ref* pRef, TFontEntry* pEntry);
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private:
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TFontEntry* Lookup(Ref& oRef);
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void Add(Ref& oRef, TFontEntry* pFontEntry);
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private:
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typedef std::map<Ref, TFontEntry*> CRefFontMap;
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CRefFontMap m_oFontMap;
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NSCriticalSection::CRITICAL_SECTION m_oCS; // Критическая секция
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};
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//-------------------------------------------------------------------------------------------------------------------------------
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template <typename T>
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inline static double PDFCoordsToMM(T tX)
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{
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return ((double)tX / 72.0) * 25.4;
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}
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//-------------------------------------------------------------------------------------------------------------------------------
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// RendererOutputDev
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//-------------------------------------------------------------------------------------------------------------------------------
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class RendererOutputDev : public OutputDev
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{
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public:
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RendererOutputDev(IRenderer* pRenderer, NSFonts::IFontManager* pFontManager, CPdfFontList* pFontList = NULL);
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virtual ~RendererOutputDev();
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virtual GBool upsideDown() override
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{
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return false;
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}
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virtual GBool useDrawChar() override
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{
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return true;
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}
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virtual GBool useTilingPatternFill() override
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{
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return true;
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}
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virtual GBool useFunctionalShadedFills()
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{
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return true;
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}
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virtual GBool useAxialShadedFills()
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{
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return true;
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}
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virtual GBool useRadialShadedFills()
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{
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return true;
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}
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virtual GBool useGouraundTriangleFills()
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{
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return true;
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}
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virtual GBool usePatchMeshFills()
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{
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return true;
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}
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virtual GBool useClipTo()
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{
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return false;//true;
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}
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virtual GBool interpretType3Chars() override
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{
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return true;
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}
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virtual GBool useFillAndStroke()
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{
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return true;
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}
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virtual GBool useSimpleTransparentGroup()
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{
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return true;
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}
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virtual GBool useSimpleTilingPatternFill()
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{
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if (NULL == m_pRenderer)
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return false;
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// TODO: m_pRenderer->GetAdditionalParam(L"TilingHtmlPattern");
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return false;
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}
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virtual GBool isStopped()
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{
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if (NULL != m_pbBreak)
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return *m_pbBreak;
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else
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return false;
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}
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//---------------------------------------------------------------------------------------------------------------------------
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virtual void startPage(int nPageIndex, GfxState *pGState) override;
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virtual void endPage() override;
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//----- Save/Restore GState
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virtual void saveState(GfxState *pGState) override;
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virtual void restoreState(GfxState *pGState) override;
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//----- Изменение параметров в GState
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virtual void updateCTM(GfxState *pGState, double dMatrix11, double dMatrix12, double dMatrix21, double dMatrix22, double dMatrix31, double dMatrix32) override;
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virtual void updateLineDash(GfxState *pGState) override;
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virtual void updateFlatness(GfxState *pGState) override;
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virtual void updateLineJoin(GfxState *pGState) override;
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virtual void updateLineCap(GfxState *pGState) override;
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virtual void updateMiterLimit(GfxState *pGState) override;
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virtual void updateLineWidth(GfxState *pGState) override;
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virtual void updateStrokeAdjust(GfxState *pGState) override;
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virtual void updateFillColor(GfxState *pGState) override;
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virtual void updateStrokeColor(GfxState *pGState) override;
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virtual void updateBlendMode(GfxState *pGState) override;
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virtual void updateFillOpacity(GfxState *pGState) override;
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virtual void updateStrokeOpacity(GfxState *pGState) override;
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virtual void updateAll(GfxState *pGState) override;
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virtual void updateRender(GfxState *pGState) override;
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//----- Изменение текстовых параметров
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virtual void updateFont(GfxState *pGState) override;
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//----- Рисование Path
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virtual void stroke(GfxState *pGState) override;
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virtual void fill(GfxState *pGState) override;
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virtual void eoFill(GfxState *pGState) override;
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virtual void FillStroke(GfxState *pGState);
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virtual void EoFillStroke(GfxState *pGState);
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virtual void tilingPatternFill(GfxState *pGState, Gfx *gfx, Object *pStream, int nPaintType, int nTilingType, Dict *pResourcesDict, double *pMatrix, double *pBBox, int nX0, int nY0, int nX1, int nY1, double dXStep, double dYStep) override;
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virtual void StartTilingFill(GfxState *pGState);
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virtual void EndTilingFill();
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virtual GBool shadedFill(GfxState* pGState, GfxShading* shading) override;
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bool FunctionShadedFill(GfxState* pGState, GfxFunctionShading* pShading);
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bool AxialShadedFill(GfxState* pGState, GfxAxialShading* pShading);
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bool RadialShadedFill(GfxState* pGState, GfxRadialShading* pShading);
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bool GouraundTriangleFill(GfxState* pGState, const std::vector<GfxColor*>& colors, const std::vector<NSStructures::Point>& points);
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bool PatchMeshFill(GfxState* pGState, GfxPatch* pPatch, GfxPatchMeshShading* pShading);
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void StartShadedFill();
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void EndShadedFill();
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void StartTilingFillIteration();
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void EndTilingFillIteration();
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void StartSimpleTilingFill(GfxState* pGState, int nX0, int nY0, int nX1, int nY1, double dStepX, double dStepY, double dXMin, double dYMin, double dXMax, double dYMax, double* pMatrix);
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void EndSimpleTilingFill();
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//----- Path clipping
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virtual void clip(GfxState *pGState) override;
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virtual void eoClip(GfxState *pGState) override;
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virtual void clipToStrokePath(GfxState *pGState) override;
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virtual void clipToPath(GfxState *pGState, GfxPath *pPath, double *pMatrix, bool bEO);
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//----- Вывод текста
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virtual void endTextObject(GfxState *pGState) override;
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virtual void beginStringOp(GfxState *pGState) override;
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virtual void endStringOp(GfxState *pGState) override;
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virtual void drawString(GfxState *pGState, GString *seString) override;
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virtual void drawChar(GfxState *pGState, double dX, double dY, double dDx, double dDy, double dOriginX, double dOriginY, CharCode nCode, int nBytesCount, Unicode *pUnicode, int nUnicodeLen) override;
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GBool beginType3Char(GfxState *state, double x, double y, double dx, double dy, CharCode code, Unicode *u, int uLen) override;
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void endType3Char(GfxState *pGState) override;
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//----- Дополнительные функции
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virtual GBool beginMarkedContent(GfxState *state, GString *s) override;
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virtual GBool beginMCOShapes(GfxState *state, GString *s, Object *ref) override;
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virtual void endMarkedContent(GfxState *state) override;
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//----- Вывод картинок
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bool ReadImage(Aggplus::CImage* pImageRes, Object *pRef, Stream *pStream);
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virtual void drawImageMask(GfxState *pGState, Object *pRef, Stream *pStream, int nWidth, int nHeight, GBool bInvert, GBool bInlineImage, GBool interpolate) override;
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virtual void setSoftMaskFromImageMask(GfxState *pGState, Object *pRef, Stream *pStream, int nWidth, int nHeight, GBool bInvert, GBool bInlineImage, GBool interpolate) override;
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virtual void drawImage(GfxState *pGState, Object *pRef, Stream *pStream, int nWidth, int nHeight, GfxImageColorMap *pColorMap, int *pMaskColors, GBool bInlineImg, GBool interpolate) override;
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virtual void drawMaskedImage(GfxState *pGState, Object *pRef, Stream *pStream, int nWidth, int nHeight, GfxImageColorMap *pColorMap,
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Object* pMaskRef, Stream *pMaskStream, int nMaskWidth, int nMaskHeight, GBool bMaskInvert, GBool interpolate) override;
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virtual void drawSoftMaskedImage(GfxState *pGState, Object *pRef, Stream *pStream, int nWidth, int nHeight, GfxImageColorMap *pColorMap,
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Object *maskRef, Stream *pMaskStream, int nMaskWidth, int nMaskHeight, GfxImageColorMap *pMaskColorMap, double *pMatte, GBool interpolate) override;
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//----- Transparency groups и SMasks
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virtual void beginTransparencyGroup(GfxState *pGState, double *pBBox, GfxColorSpace *pBlendingColorSpace, GBool bIsolated, GBool bKnockout, GBool bForSoftMask) override;
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virtual void endTransparencyGroup(GfxState *pGState) override;
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virtual void paintTransparencyGroup(GfxState *pGState, double *pBBox) override;
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virtual void setSoftMask(GfxState *pGState, double *pBBox, GBool bAlpha, Function *pTransferFunc, GfxColor *pBackdropColor) override;
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virtual void clearSoftMask(GfxState *pGState) override;
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//----- Дополнительные функции для данного устройства
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void NewPDF(XRef *pXref);
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void SetBreak(bool* pbBreak)
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{
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m_pbBreak = pbBreak;
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}
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static NSFonts::CFontInfo* GetFontByParams(XRef* pXref, NSFonts::IFontManager* pFontManager, GfxFont* pFont, std::wstring& wsFontBaseName);
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static void GetFont(XRef* pXref, NSFonts::IFontManager* pFontManager, CPdfFontList *pFontList, GfxFont* pFont, std::wstring& wsFileName, std::wstring& wsFontName);
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static void CheckFontStylePDF(std::wstring& sName, bool& bBold, bool& bItalic);
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private:
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struct GfxOutputState
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{
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GfxState* pGState;
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Aggplus::CSoftMask* pSoftMask;
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GfxClip* pClip;
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GfxTextClip* pTextClip;
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GfxOutputState() : pGState(NULL), pSoftMask(NULL), pClip(NULL), pTextClip(NULL) {}
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~GfxOutputState()
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{
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RELEASEOBJECT(pClip);
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RELEASEOBJECT(pTextClip);
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}
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};
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struct GfxOutputCS
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{
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bool bKnockout;
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GfxColorSpace* pBlendingCS;
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GfxOutputCS() : bKnockout(false), pBlendingCS(NULL) {}
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};
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void DoPath(GfxState *pGState, GfxPath *pPath, double dPageHeight, double *pCTM, GfxClipMatrix* pCTM2 = NULL);
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void ClipToText(const std::wstring& wsFontName, const std::wstring& wsFontPath, double dFontSize, int nFontStyle, double* pMatrix, const std::wstring& wsText, double dX, double dY, double dWidth = 0, double dHeight = 0, double dBaseLineOffset = 0);
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void AddClip(GfxState* pGState, GfxOutputState* pState, int nIndex);
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void AddTextClip(GfxState* pGState, GfxOutputState* pState = NULL);
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void UpdateAllClip(GfxState *pGState);
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void DoTransform(double *pMatrix, double *pdShiftX, double *pdShiftY, bool bText = false);
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private:
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IRenderer* m_pRenderer;
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long m_lRendererType;
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double m_arrMatrix[6];
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NSFonts::IFontManager* m_pFontManager;
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XRef* m_pXref; // Таблица Xref для данного PDF-документа
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CPdfFontList* m_pFontList;
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bool *m_pbBreak; // Внешняя остановка рендерера
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std::deque<GfxOutputCS> m_sCS;
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std::deque<GfxOutputState> m_sStates;
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Aggplus::CSoftMask* m_pSoftMask;
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bool m_bTiling;
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bool m_bDrawOnlyText; // Special option for html-renderer
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};
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}
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#endif // _PDF_READER_RENDERER_OUTPUTDEV_H
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