зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
3.0 KiB
C++
90 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef PDFIUMENGINESHIM_H
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#define PDFIUMENGINESHIM_H
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#include "prlink.h"
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#include "fpdfview.h"
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/* include windows.h for the HDC definitions that we need. */
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#include <windows.h>
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namespace mozilla {
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namespace widget {
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typedef void (STDCALL *FPDF_InitLibrary_Pfn)();
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typedef void (STDCALL *FPDF_DestroyLibrary_Pfn)();
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typedef FPDF_DOCUMENT (STDCALL *FPDF_LoadDocument_Pfn)(FPDF_STRING file_path,
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FPDF_BYTESTRING password);
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typedef void(STDCALL *FPDF_CloseDocument_Pfn)(FPDF_DOCUMENT aDocument);
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typedef int (STDCALL *FPDF_GetPageCount_Pfn)(FPDF_DOCUMENT aDocument);
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typedef FPDF_PAGE (STDCALL *FPDF_LoadPage_Pfn)(FPDF_DOCUMENT aDocument,
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int aPageIndex);
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typedef void (STDCALL *FPDF_ClosePage_Pfn)(FPDF_PAGE aPage);
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typedef void (STDCALL *FPDF_RenderPage_Pfn)(HDC aDC,
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FPDF_PAGE aPage,
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int aStartX,
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int aStartY,
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int aSizeX,
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int aSizeY,
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int aRotate,
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int aFlags);
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/**
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* This class exposes an interface to the PDFium library and
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* takes care of loading and linking to the appropriate PDFium symbols.
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*/
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class PDFiumEngineShim
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{
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public:
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PDFiumEngineShim)
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static already_AddRefed<PDFiumEngineShim> GetInstanceOrNull();
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bool Init();
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FPDF_DOCUMENT LoadDocument(FPDF_STRING file_path,
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FPDF_BYTESTRING aPassword);
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void CloseDocument(FPDF_DOCUMENT aDocument);
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int GetPageCount(FPDF_DOCUMENT aDocument);
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int GetPageSizeByIndex(FPDF_DOCUMENT aDocument, int aPageIndex,
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double* aWidth, double* aHeight);
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FPDF_PAGE LoadPage(FPDF_DOCUMENT aDocument, int aPageIndex);
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void ClosePage(FPDF_PAGE aPage);
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void RenderPage(HDC aDC, FPDF_PAGE aPage,
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int aStartX, int aStartY,
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int aSizeX, int aSizeY,
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int aRotate, int aFlags);
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private:
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PDFiumEngineShim();
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~PDFiumEngineShim();
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bool mInitialized ;
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FPDF_InitLibrary_Pfn mFPDF_InitLibrary;
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FPDF_DestroyLibrary_Pfn mFPDF_DestroyLibrary;
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FPDF_LoadDocument_Pfn mFPDF_LoadDocument;
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FPDF_CloseDocument_Pfn mFPDF_CloseDocument;
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FPDF_GetPageCount_Pfn mFPDF_GetPageCount;
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FPDF_LoadPage_Pfn mFPDF_LoadPage;
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FPDF_ClosePage_Pfn mFPDF_ClosePage;
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FPDF_RenderPage_Pfn mFPDF_RenderPage;
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PRLibrary* mPRLibrary;
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};
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} // namespace widget
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} // namespace mozilla
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#endif /* PDFIUMENGINESHIM_H */ |