mirror of
https://github.com/wmjordan/PDFPatcher.git
synced 2026-10-18 21:52:34 +08:00
WMJ
180 lines
10 KiB
C#
180 lines
10 KiB
C#
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using CC = System.Runtime.InteropServices.CallingConvention;
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namespace MuPdfSharp
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{
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static partial class NativeMethods
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{
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#region Object creation
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_null")]
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internal static extern IntPtr NewNull(ContextHandle ctx, DocumentHandle doc);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_bool")]
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internal static extern IntPtr NewBoolean(ContextHandle ctx, DocumentHandle doc, int boolean);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_int")]
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internal static extern IntPtr NewInteger(ContextHandle ctx, DocumentHandle doc, int value);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_real")]
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internal static extern IntPtr NewFloat(ContextHandle ctx, DocumentHandle doc, float value);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_string", BestFitMapping = false)]
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internal static extern IntPtr NewString(ContextHandle ctx, DocumentHandle doc, [MarshalAs(UnmanagedType.LPStr)] string value, int len);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_name", BestFitMapping = false)]
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internal static extern IntPtr NewName(ContextHandle ctx, DocumentHandle doc, [MarshalAs(UnmanagedType.LPStr)] string name);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_array")]
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internal static extern IntPtr NewArray(ContextHandle ctx, DocumentHandle doc, int initCap);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_dict")]
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internal static extern IntPtr NewDictionary(ContextHandle ctx, DocumentHandle doc, int initCap);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_indirect")]
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internal static extern IntPtr NewIndirectReference(ContextHandle ctx, DocumentHandle doc, int num, int gen);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_rect")]
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internal static extern IntPtr NewRect(ContextHandle ctx, DocumentHandle doc, Rectangle rect);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_new_matrix")]
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internal static extern IntPtr NewMatrix(ContextHandle ctx, DocumentHandle doc, Matrix matrix);
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#endregion
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#region Document level object and operation
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_authenticate_password", BestFitMapping = false)]
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internal static extern bool AuthenticatePassword(ContextHandle ctx, DocumentHandle doc, [MarshalAs(UnmanagedType.LPStr)] string password);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_trailer")]
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internal static extern IntPtr GetTrailer(ContextHandle ctx, DocumentHandle doc);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_count_pages")]
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internal static extern int CountPages(ContextHandle ctx, DocumentHandle doc);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_flush_warnings")]
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internal static extern void FlushWarnings(ContextHandle ctx);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_open_document", CharSet = CharSet.Unicode)]
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internal static extern DocumentHandle OpenPdfDocument(ContextHandle ctx, string fileName);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "pdf_needs_password")]
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internal static extern bool NeedsPdfPassword(ContextHandle ctx, DocumentHandle doc);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_aa_level")]
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internal static extern int GetAntiAliasLevel(ContextHandle ctx);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_set_aa_level")]
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internal static extern void SetAntiAliasLevel(ContextHandle ctx, int level);
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#endregion
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#region Fonts
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internal static readonly FzLoadSystemFont LoadSystemFont = RequestSystemFont;
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internal static readonly FzLoadSystemCjkFont LoadSystemCjkFont = RequestSystemCjkFont;
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internal static readonly FzLoadSystemFallbackFont LoadSystemFallbackFont = RequestSystemFallbackFont;
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[UnmanagedFunctionPointer(CC.Cdecl)]
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internal delegate IntPtr FzLoadSystemFont(IntPtr ctx, string name, int bold, int italic, int needExactMetrics);
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[UnmanagedFunctionPointer(CC.Cdecl)]
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internal delegate IntPtr FzLoadSystemCjkFont(IntPtr ctx, string name, int registry, int serifDesired);
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[UnmanagedFunctionPointer(CC.Cdecl)]
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internal delegate IntPtr FzLoadSystemFallbackFont(IntPtr ctx, int script, int language, int serif, int bold, int italic);
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/// <summary>打开系统内置汉字库功能，支持老的未正确嵌入汉字库的 PDF。</summary>
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_install_load_system_font_funcs")]
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internal static extern void LoadSystemFontFuncs(ContextHandle ctx,
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FzLoadSystemFont fz_load_system_font_fn,
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FzLoadSystemCjkFont fz_load_system_cjk_font_fn,
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FzLoadSystemFallbackFont fz_load_system_fallback_font_fn
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);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_new_font_from_file", CharSet = CharSet.Ansi)]
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internal static extern IntPtr LoadFontFromFile(IntPtr ctx, [MarshalAs(UnmanagedType.LPStr)] string name, [MarshalAs(UnmanagedType.LPStr)] string path, int index, int useGlyphBox);
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static IntPtr RequestSystemFont(IntPtr ctx, [MarshalAs(UnmanagedType.LPWStr)] string name, int bold, int italic, int needExactMetrics) {
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System.Diagnostics.Debug.WriteLine("Requesting system font: " + name);
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var f = TryLoadCompatibleFont(name);
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if (f != null) {
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return LoadFontFromFile(ctx, null, f, 0, 0);
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//unsafe {
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// MuFontFlags* flags = (MuFontFlags*)GetFontFlags(p);
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// var n = GetFontName(ctx, p);
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// var f = p.MarshalAs<FzFont>();
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//}
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}
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//var p = LoadFontFromFile(ctx, name, @"C:\Windows\Fonts\simsun.ttc", 1, 1);
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return IntPtr.Zero;
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}
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static IntPtr RequestSystemCjkFont(IntPtr ctx, string name, int registry, int serifDesired) {
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System.Diagnostics.Debug.WriteLine("Requesting system CJK font: " + name);
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var ff = TryLoadCompatibleFont(name);
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// todo: load fallback font
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return ff != null ? LoadFontFromFile(ctx, name, ff, 0, 1) : IntPtr.Zero;
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}
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private static string TryLoadCompatibleFont(string name) {
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var ff = Path.GetDirectoryName(Environment.GetFolderPath(Environment.SpecialFolder.System)) + "\\Fonts\\";
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ff = name.StartsWith("SimKai", StringComparison.OrdinalIgnoreCase) || name.StartsWith("楷体_GB2312", StringComparison.OrdinalIgnoreCase) || name.StartsWith("Kaiti_GB2312", StringComparison.OrdinalIgnoreCase) ? ff + "simkai.ttf"
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: name.StartsWith("SimSun", StringComparison.OrdinalIgnoreCase) || name.StartsWith("宋体", StringComparison.OrdinalIgnoreCase) || name.StartsWith("STSong", StringComparison.OrdinalIgnoreCase) ? ff + "simsun.ttc"
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: name.StartsWith("SimHei", StringComparison.OrdinalIgnoreCase) || name.StartsWith("黑体", StringComparison.OrdinalIgnoreCase) ? ff + "simhei.ttf"
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: name.StartsWith("SimLi", StringComparison.OrdinalIgnoreCase) || name.StartsWith("隶书", StringComparison.OrdinalIgnoreCase) ? ff + "simli.ttf"
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: name.StartsWith("SimFang", StringComparison.OrdinalIgnoreCase) || name.StartsWith("仿宋_GB2312", StringComparison.OrdinalIgnoreCase) || name.StartsWith("Fangsong_GB2312", StringComparison.OrdinalIgnoreCase) ? ff + "simfang.ttf"
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: name.StartsWith("SimYou", StringComparison.OrdinalIgnoreCase) || name.StartsWith("幼圆", StringComparison.OrdinalIgnoreCase) ? ff + "simyou.ttf"
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: null;
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return ff;
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}
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static IntPtr RequestSystemFallbackFont(IntPtr ctx, int script, int language, int serif, int bold, int italic) {
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System.Diagnostics.Debug.WriteLine("Requesting fallback font: " + script);
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return IntPtr.Zero;
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}
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_font_ft_face")]
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internal static extern IntPtr GetFontFace(ContextHandle ctx, IntPtr font);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_font_flags")]
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internal static extern MuFontFlags GetFontFlags(IntPtr font);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_font_name")]
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internal static unsafe extern sbyte* GetFontName(ContextHandle ctx, IntPtr font);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_font_bbox")]
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internal static extern BBox GetFontBBox(ContextHandle ctx, IntPtr font);
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#endregion
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#region Stream and file
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_buffer_storage")]
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internal static extern int BufferStorage(ContextHandle ctx, IntPtr buffer, ref IntPtr data);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_open_faxd")]
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internal static extern IntPtr DecodeCcittFax(ContextHandle ctx, StreamHandle stmChain, int k, int endOfLine, int encodedByteAlign, int columns, int rows, int endOfBlock, int blackIs1);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_drop_buffer")]
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internal static extern void DropBuffer(ContextHandle ctx, IntPtr buffer);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_tell")]
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internal static extern int GetPosition(ContextHandle ctx, StreamHandle stm);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_keep_stream")]
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internal static extern IntPtr Keep(ContextHandle ctx, StreamHandle stm);
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/// <summary>打开文本流。</summary>
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/// <param name="ctx">MuPDF 上下文指针。</param>
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/// <param name="fileName">要打开的文件名。</param>
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/// <returns>指向 fz_stream 的指针</returns>
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_open_file_w", CharSet = CharSet.Unicode)]
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internal static extern IntPtr OpenFile(ContextHandle ctx, string fileName);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_open_memory")]
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internal static extern IntPtr OpenMemory(ContextHandle ctx, byte[] data, int len);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_open_memory")]
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internal static extern IntPtr OpenMemory(ContextHandle ctx, IntPtr data, int len);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_read")]
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internal static extern int Read(ContextHandle ctx, StreamHandle stm, byte[] buffer, int len);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_read_all")]
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internal static extern IntPtr ReadAll(ContextHandle ctx, StreamHandle stm, int initial);
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[DllImport(DLL, CallingConvention = CC.Cdecl, EntryPoint = "fz_seek")]
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internal static extern void Seek(ContextHandle ctx, StreamHandle stm, int offset, int whence);
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#endregion
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}
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}
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