summaryrefslogtreecommitdiff
path: root/core/include/fxge/fx_font.h
blob: 5797ecb246b3ffd9b80399d218ad5173555e594a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#ifndef CORE_INCLUDE_FXGE_FX_FONT_H_
#define CORE_INCLUDE_FXGE_FX_FONT_H_

#include <map>

#include "../fxcrt/fx_system.h"
#include "fx_dib.h"

typedef struct FT_FaceRec_* FXFT_Face;
typedef void* FXFT_Library;
class IFX_FontEncoding;
class CFX_PathData;
class CFX_SubstFont;
class CFX_FaceCache;
class CFX_FontMapper;
class IFX_SystemFontInfo;
class CFontFileFaceInfo;
#define FXFONT_FIXED_PITCH		0x01
#define FXFONT_SERIF			0x02
#define FXFONT_SYMBOLIC			0x04
#define FXFONT_SCRIPT			0x08
#define FXFONT_ITALIC			0x40
#define FXFONT_BOLD				0x40000
#define FXFONT_USEEXTERNATTR	0x80000
#define FXFONT_CIDFONT			0x100000
#define FXFONT_ANSI_CHARSET		0
#define FXFONT_DEFAULT_CHARSET	1
#define FXFONT_SYMBOL_CHARSET	2
#define FXFONT_SHIFTJIS_CHARSET	128
#define FXFONT_HANGEUL_CHARSET	129
#define FXFONT_GB2312_CHARSET	134
#define FXFONT_CHINESEBIG5_CHARSET	136
#define FXFONT_THAI_CHARSET		222
#define FXFONT_EASTEUROPE_CHARSET	238
#define FXFONT_RUSSIAN_CHARSET	204
#define FXFONT_GREEK_CHARSET	161
#define FXFONT_TURKISH_CHARSET	162
#define FXFONT_HEBREW_CHARSET	177
#define FXFONT_ARABIC_CHARSET	178
#define FXFONT_BALTIC_CHARSET	186
#define FXFONT_FF_FIXEDPITCH	1
#define FXFONT_FF_ROMAN			(1<<4)
#define FXFONT_FF_SCRIPT		(4<<4)
#define FXFONT_FW_NORMAL		400
#define FXFONT_FW_BOLD			700
class CFX_Font
{
public:
    CFX_Font();
    ~CFX_Font();

    FX_BOOL					LoadSubst(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags,
                                      int weight, int italic_angle, int CharsetCP, FX_BOOL bVertical = FALSE);

    FX_BOOL					LoadEmbedded(const uint8_t* data, FX_DWORD size);

    FX_BOOL					LoadFile(IFX_FileRead* pFile);

    FXFT_Face				GetFace() const
    {
        return m_Face;
    }


    const CFX_SubstFont*	GetSubstFont() const
    {
        return m_pSubstFont;
    }

    CFX_PathData*			LoadGlyphPath(FX_DWORD glyph_index, int dest_width = 0);

    int						GetGlyphWidth(FX_DWORD glyph_index);

    int						GetAscent() const;

    int						GetDescent() const;

    FX_BOOL                 GetGlyphBBox(FX_DWORD glyph_index, FX_RECT &bbox);

    FX_BOOL                 IsItalic();

    FX_BOOL                 IsBold();

    FX_BOOL                 IsFixedWidth();

    FX_BOOL					IsVertical() const
    {
        return m_bVertical;
    }

    CFX_WideString          GetPsName() const;


    CFX_ByteString          GetFamilyName() const;

    CFX_ByteString          GetFaceName() const;


    FX_BOOL                 IsTTFont();

    FX_BOOL                 GetBBox(FX_RECT &bbox);

    int                     GetHeight();

    int                     GetULPos();

    int                     GetULthickness();

    int                     GetMaxAdvanceWidth();

    FXFT_Face				m_Face;

    CFX_SubstFont*			m_pSubstFont;
    FX_BOOL					IsEmbedded()
    {
        return m_bEmbedded;
    }

    void					AdjustMMParams(int glyph_index, int width, int weight);
    uint8_t*				m_pFontDataAllocation;
    uint8_t*               m_pFontData;
    uint8_t*				m_pGsubData;
    FX_DWORD                m_dwSize;
    CFX_BinaryBuf           m_OtfFontData;
    void*                   m_hHandle;
    void*                   m_pPlatformFont;
    void*                   m_pPlatformFontCollection;
    void*                   m_pDwFont;
    FX_BOOL                 m_bDwLoaded;
    void                    ReleasePlatformResource();

    void					DeleteFace();
protected:

    FX_BOOL					m_bEmbedded;
    FX_BOOL					m_bVertical;
    void*					m_pOwnedStream;
};
#define ENCODING_INTERNAL		0
#define ENCODING_UNICODE		1
class IFX_FontEncoding
{
public:
    virtual ~IFX_FontEncoding() {}

    virtual FX_DWORD		GlyphFromCharCode(FX_DWORD charcode) = 0;

    virtual CFX_WideString	UnicodeFromCharCode(FX_DWORD charcode) const = 0;

    virtual FX_DWORD		CharCodeFromUnicode(FX_WCHAR Unicode) const = 0;
};
IFX_FontEncoding* FXGE_CreateUnicodeEncoding(CFX_Font* pFont);
#define FXFONT_SUBST_MM				0x01
#define FXFONT_SUBST_GLYPHPATH		0x04
#define FXFONT_SUBST_CLEARTYPE		0x08
#define FXFONT_SUBST_TRANSFORM		0x10
#define FXFONT_SUBST_NONSYMBOL		0x20
#define FXFONT_SUBST_EXACT			0x40
#define FXFONT_SUBST_STANDARD		0x80
class CFX_SubstFont
{
public:

    CFX_SubstFont();

    void*				m_ExtHandle;

    CFX_ByteString			m_Family;

    int						m_Charset;

    FX_DWORD				m_SubstFlags;

    int						m_Weight;

    int						m_ItalicAngle;

    FX_BOOL					m_bSubstOfCJK;

    int						m_WeightCJK;

    FX_BOOL					m_bItlicCJK;
};
#define FX_FONT_FLAG_SERIF              0x01
#define FX_FONT_FLAG_FIXEDPITCH			0x02
#define FX_FONT_FLAG_ITALIC				0x04
#define FX_FONT_FLAG_BOLD				0x08
#define FX_FONT_FLAG_SYMBOLIC_SYMBOL	0x10
#define FX_FONT_FLAG_SYMBOLIC_DINGBATS	0x20
#define FX_FONT_FLAG_MULTIPLEMASTER		0x40
typedef struct {
    const uint8_t*	m_pFontData;
    FX_DWORD	m_dwSize;
} FoxitFonts;
class CFX_FontMgr
{
public:
    CFX_FontMgr();
    ~CFX_FontMgr();
    void			InitFTLibrary();
    FXFT_Face		GetCachedFace(const CFX_ByteString& face_name,
                                  int weight, FX_BOOL bItalic, uint8_t*& pFontData);
    FXFT_Face		AddCachedFace(const CFX_ByteString& face_name,
                                  int weight, FX_BOOL bItalic, uint8_t* pData, FX_DWORD size, int face_index);
    FXFT_Face		GetCachedTTCFace(int ttc_size, FX_DWORD checksum,
                                     int font_offset, uint8_t*& pFontData);
    FXFT_Face		AddCachedTTCFace(int ttc_size, FX_DWORD checksum,
                                     uint8_t* pData, FX_DWORD size, int font_offset);
    FXFT_Face		GetFileFace(const FX_CHAR* filename, int face_index);
    FXFT_Face		GetFixedFace(const uint8_t* pData, FX_DWORD size, int face_index);
    void			ReleaseFace(FXFT_Face face);
    void			SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo);
    FXFT_Face		FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags,
                                  int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont);

    void			FreeCache();

    FX_BOOL			GetStandardFont(const uint8_t*& pFontData, FX_DWORD& size, int index);
    CFX_FontMapper*	m_pBuiltinMapper;
    CFX_MapByteStringToPtr	m_FaceMap;
    FXFT_Library	m_FTLibrary;
    FoxitFonts m_ExternalFonts[16];
};
class IFX_FontEnumerator
{
public:
    virtual ~IFX_FontEnumerator() { }

    virtual void		HitFont() = 0;

    virtual void		Finish() = 0;
};
class IFX_AdditionalFontEnum
{
public:
    virtual ~IFX_AdditionalFontEnum() { }
    virtual int  CountFiles() = 0;
    virtual IFX_FileStream* GetFontFile(int index) = 0;
};
class CFX_FontMapper
{
public:
    CFX_FontMapper(CFX_FontMgr* mgr);
    ~CFX_FontMapper();

    void				SetSystemFontInfo(IFX_SystemFontInfo* pFontInfo);
    IFX_SystemFontInfo*	GetSystemFontInfo()
    {
        return m_pFontInfo;
    }
    void				AddInstalledFont(const CFX_ByteString& name, int charset);
    void				LoadInstalledFonts();
    CFX_ByteStringArray	m_InstalledTTFonts;
    void				SetFontEnumerator(IFX_FontEnumerator* pFontEnumerator)
    {
        m_pFontEnumerator = pFontEnumerator;
    }
    IFX_FontEnumerator*	GetFontEnumerator() const
    {
        return m_pFontEnumerator;
    }
    FXFT_Face FindSubstFont(const CFX_ByteString& face_name, FX_BOOL bTrueType, FX_DWORD flags,
                            int weight, int italic_angle, int CharsetCP, CFX_SubstFont* pSubstFont);
private:
    CFX_ByteString		GetPSNameFromTT(void* hFont);
    CFX_ByteString		MatchInstalledFonts(const CFX_ByteString& norm_name);
    FXFT_Face			UseInternalSubst(CFX_SubstFont* pSubstFont, int iBaseFont, int italic_angle, int weight, int picthfamily);

    FX_BOOL				m_bListLoaded;
    FXFT_Face			m_MMFaces[2];
    CFX_ByteString		m_LastFamily;
    CFX_DWordArray		m_CharsetArray;
    CFX_ByteStringArray	m_FaceArray;
    IFX_SystemFontInfo*	m_pFontInfo;
    FXFT_Face			m_FoxitFaces[14];
    IFX_FontEnumerator*		m_pFontEnumerator;
    CFX_FontMgr* const m_pFontMgr;
};
class IFX_SystemFontInfo
{
public:
    static IFX_SystemFontInfo*	CreateDefault();
    virtual void		Release() = 0;

    virtual	FX_BOOL		EnumFontList(CFX_FontMapper* pMapper) = 0;
    virtual void*		MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family, const FX_CHAR* face, int& iExact) = 0;
    virtual void*		GetFont(const FX_CHAR* face) = 0;
    virtual FX_DWORD	GetFontData(void* hFont, FX_DWORD table, uint8_t* buffer, FX_DWORD size) = 0;
    virtual FX_BOOL		GetFaceName(void* hFont, CFX_ByteString& name) = 0;
    virtual FX_BOOL		GetFontCharset(void* hFont, int& charset) = 0;
    virtual int			GetFaceIndex(void* hFont)
    {
        return 0;
    }
    virtual void		DeleteFont(void* hFont) = 0;
    virtual void*       RetainFont(void* hFont)
    {
        return NULL;
    }
protected:
    ~IFX_SystemFontInfo() { }
};
class CFX_FolderFontInfo : public IFX_SystemFontInfo
{
public:
    CFX_FolderFontInfo();
    virtual ~CFX_FolderFontInfo();
    void AddPath(const CFX_ByteStringC& path);

    // IFX_SytemFontInfo:
    void Release() override;
    FX_BOOL EnumFontList(CFX_FontMapper* pMapper) override;
    void* MapFont(int weight, FX_BOOL bItalic, int charset, int pitch_family,
                  const FX_CHAR* face, int& bExact) override;
    void* GetFont(const FX_CHAR* face) override;
    FX_DWORD GetFontData(void* hFont, FX_DWORD table,
                         uint8_t* buffer, FX_DWORD size) override;
    void DeleteFont(void* hFont) override;
    FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) override;
    FX_BOOL GetFontCharset(void* hFont, int& charset) override;

protected:
    CFX_MapByteStringToPtr	m_FontList;
    CFX_ByteStringArray	m_PathList;
    CFX_FontMapper*		m_pMapper;
    void				ScanPath(CFX_ByteString& path);
    void				ScanFile(CFX_ByteString& path);
    void				ReportFace(CFX_ByteString& path, FXSYS_FILE* pFile, FX_DWORD filesize, FX_DWORD offset);
};
class CFX_CountedFaceCache
{
public:
    CFX_FaceCache*	m_Obj;
    FX_DWORD		m_nCount;
};

class CFX_FontCache
{
public:
    ~CFX_FontCache();
    CFX_FaceCache*			GetCachedFace(CFX_Font* pFont);
    void					ReleaseCachedFace(CFX_Font* pFont);
    void					FreeCache(FX_BOOL bRelease = FALSE);

private:
    using CFX_FTCacheMap = std::map<FXFT_Face, CFX_CountedFaceCache*>;
    CFX_FTCacheMap m_FTFaceMap;
    CFX_FTCacheMap m_ExtFaceMap;
};
class CFX_AutoFontCache
{
public:
    CFX_AutoFontCache(CFX_FontCache* pFontCache, CFX_Font* pFont)
        : m_pFontCache(pFontCache)
        , m_pFont(pFont)
    {
    }
    ~CFX_AutoFontCache()
    {
        m_pFontCache->ReleaseCachedFace(m_pFont);
    }
    CFX_FontCache* m_pFontCache;
    CFX_Font* m_pFont;
};
#define FX_FONTCACHE_DEFINE(pFontCache, pFont) CFX_AutoFontCache autoFontCache((pFontCache), (pFont))
class CFX_GlyphBitmap
{
public:
    int						m_Top;
    int						m_Left;
    CFX_DIBitmap			m_Bitmap;
};
class CFX_FaceCache
{
public:
    ~CFX_FaceCache();
    const CFX_GlyphBitmap*	LoadGlyphBitmap(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle, const CFX_AffineMatrix* pMatrix,
                                            int dest_width, int anti_alias, int& text_flags);
    const CFX_PathData*		LoadGlyphPath(CFX_Font* pFont, FX_DWORD glyph_index, int dest_width);


    CFX_FaceCache(FXFT_Face face);
private:
    FXFT_Face				m_Face;
    CFX_GlyphBitmap*		RenderGlyph(CFX_Font* pFont, FX_DWORD glyph_index, FX_BOOL bFontStyle,
                                        const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias);
    CFX_GlyphBitmap*		RenderGlyph_Nativetext(CFX_Font* pFont, FX_DWORD glyph_index,
            const CFX_AffineMatrix* pMatrix, int dest_width, int anti_alias);
    CFX_GlyphBitmap*        LookUpGlyphBitmap(CFX_Font* pFont, const CFX_AffineMatrix* pMatrix, CFX_ByteStringC& FaceGlyphsKey,
            FX_DWORD glyph_index, FX_BOOL bFontStyle, int dest_width, int anti_alias);
    CFX_MapByteStringToPtr	m_SizeMap;
    CFX_MapPtrToPtr			m_PathMap;
    CFX_DIBitmap*           m_pBitmap;

    void				    InitPlatform();
    void				    DestroyPlatform();
};
typedef struct {
    const CFX_GlyphBitmap*	m_pGlyph;
    int					m_OriginX, m_OriginY;
    FX_FLOAT			m_fOriginX, m_fOriginY;
} FXTEXT_GLYPHPOS;
FX_RECT FXGE_GetGlyphsBBox(FXTEXT_GLYPHPOS* pGlyphAndPos, int nChars, int anti_alias, FX_FLOAT retinaScaleX = 1.0f, FX_FLOAT retinaScaleY = 1.0f);
FX_BOOL	OutputGlyph(void* dib, int x, int y, CFX_Font* pFont, double font_size,
                    CFX_AffineMatrix* pMatrix, unsigned long glyph_index, unsigned long argb);
FX_BOOL	OutputText(void* dib, int x, int y, CFX_Font* pFont, double font_size,
                   CFX_AffineMatrix* pText_matrix, unsigned short const* text, unsigned long argb);
class IFX_GSUBTable
{
public:
    static IFX_GSUBTable* Create(CFX_Font* pFont);
    virtual ~IFX_GSUBTable() { }
    virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) = 0;
};

#endif  // CORE_INCLUDE_FXGE_FX_FONT_H_