4 * Copyright 2014 Nikolay Sivov for CodeWeavers
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 #include "wine/port.h"
26 #ifdef HAVE_FT2BUILD_H
29 #include FT_FREETYPE_H
31 #endif /* HAVE_FT2BUILD_H */
35 #include "wine/library.h"
36 #include "wine/debug.h"
38 #include "dwrite_private.h"
40 WINE_DEFAULT_DEBUG_CHANNEL(dwrite
);
44 static CRITICAL_SECTION freetype_cs
;
45 static CRITICAL_SECTION_DEBUG critsect_debug
=
48 { &critsect_debug
.ProcessLocksList
, &critsect_debug
.ProcessLocksList
},
49 0, 0, { (DWORD_PTR
)(__FILE__
": freetype_cs") }
51 static CRITICAL_SECTION freetype_cs
= { &critsect_debug
, -1, 0, 0, 0, 0 };
53 static void *ft_handle
= NULL
;
54 static FT_Library library
= 0;
55 static FTC_Manager cache_manager
= 0;
56 static FTC_CMapCache cmap_cache
= 0;
64 #define MAKE_FUNCPTR(f) static typeof(f) * p##f = NULL
65 MAKE_FUNCPTR(FT_Done_FreeType
);
66 MAKE_FUNCPTR(FT_Init_FreeType
);
67 MAKE_FUNCPTR(FT_Library_Version
);
68 MAKE_FUNCPTR(FT_Load_Glyph
);
69 MAKE_FUNCPTR(FT_New_Memory_Face
);
70 MAKE_FUNCPTR(FT_Outline_Transform
);
71 MAKE_FUNCPTR(FTC_CMapCache_Lookup
);
72 MAKE_FUNCPTR(FTC_CMapCache_New
);
73 MAKE_FUNCPTR(FTC_Manager_New
);
74 MAKE_FUNCPTR(FTC_Manager_Done
);
75 MAKE_FUNCPTR(FTC_Manager_LookupFace
);
76 MAKE_FUNCPTR(FTC_Manager_LookupSize
);
77 MAKE_FUNCPTR(FTC_Manager_RemoveFaceID
);
80 static FT_Error
face_requester(FTC_FaceID face_id
, FT_Library library
, FT_Pointer request_data
, FT_Face
*face
)
82 IDWriteFontFace
*fontface
= (IDWriteFontFace
*)face_id
;
83 IDWriteFontFileStream
*stream
;
84 IDWriteFontFile
*file
;
95 hr
= IDWriteFontFace_GetFiles(fontface
, &count
, &file
);
99 hr
= get_filestream_from_file(file
, &stream
);
100 IDWriteFontFile_Release(file
);
104 hr
= IDWriteFontFileStream_GetFileSize(stream
, &data_size
);
106 fterror
= FT_Err_Invalid_Stream_Read
;
110 hr
= IDWriteFontFileStream_ReadFileFragment(stream
, &data_ptr
, 0, data_size
, &context
);
112 fterror
= FT_Err_Invalid_Stream_Read
;
116 index
= IDWriteFontFace_GetIndex(fontface
);
117 fterror
= pFT_New_Memory_Face(library
, data_ptr
, data_size
, index
, face
);
118 IDWriteFontFileStream_ReleaseFileFragment(stream
, context
);
121 IDWriteFontFileStream_Release(stream
);
126 BOOL
init_freetype(void)
128 FT_Version_t FT_Version
;
130 ft_handle
= wine_dlopen(SONAME_LIBFREETYPE
, RTLD_NOW
, NULL
, 0);
132 WINE_MESSAGE("Wine cannot find the FreeType font library.\n");
136 #define LOAD_FUNCPTR(f) if((p##f = wine_dlsym(ft_handle, #f, NULL, 0)) == NULL){WARN("Can't find symbol %s\n", #f); goto sym_not_found;}
137 LOAD_FUNCPTR(FT_Done_FreeType
)
138 LOAD_FUNCPTR(FT_Init_FreeType
)
139 LOAD_FUNCPTR(FT_Library_Version
)
140 LOAD_FUNCPTR(FT_Load_Glyph
)
141 LOAD_FUNCPTR(FT_New_Memory_Face
)
142 LOAD_FUNCPTR(FT_Outline_Transform
)
143 LOAD_FUNCPTR(FTC_CMapCache_Lookup
)
144 LOAD_FUNCPTR(FTC_CMapCache_New
)
145 LOAD_FUNCPTR(FTC_Manager_New
)
146 LOAD_FUNCPTR(FTC_Manager_Done
)
147 LOAD_FUNCPTR(FTC_Manager_LookupFace
)
148 LOAD_FUNCPTR(FTC_Manager_LookupSize
)
149 LOAD_FUNCPTR(FTC_Manager_RemoveFaceID
)
152 if (pFT_Init_FreeType(&library
) != 0) {
153 ERR("Can't init FreeType library\n");
154 wine_dlclose(ft_handle
, NULL
, 0);
158 pFT_Library_Version(library
, &FT_Version
.major
, &FT_Version
.minor
, &FT_Version
.patch
);
160 /* init cache manager */
161 if (pFTC_Manager_New(library
, 0, 0, 0, &face_requester
, NULL
, &cache_manager
) != 0 ||
162 pFTC_CMapCache_New(cache_manager
, &cmap_cache
) != 0) {
164 ERR("Failed to init FreeType cache\n");
165 pFTC_Manager_Done(cache_manager
);
166 pFT_Done_FreeType(library
);
167 wine_dlclose(ft_handle
, NULL
, 0);
172 TRACE("FreeType version is %d.%d.%d\n", FT_Version
.major
, FT_Version
.minor
, FT_Version
.patch
);
176 WINE_MESSAGE("Wine cannot find certain functions that it needs from FreeType library.\n");
177 wine_dlclose(ft_handle
, NULL
, 0);
182 void release_freetype(void)
184 pFTC_Manager_Done(cache_manager
);
185 pFT_Done_FreeType(library
);
188 void freetype_notify_cacheremove(IDWriteFontFace2
*fontface
)
190 EnterCriticalSection(&freetype_cs
);
191 pFTC_Manager_RemoveFaceID(cache_manager
, fontface
);
192 LeaveCriticalSection(&freetype_cs
);
195 HRESULT
freetype_get_design_glyph_metrics(IDWriteFontFace2
*fontface
, UINT16 unitsperEm
, UINT16 glyph
, DWRITE_GLYPH_METRICS
*ret
)
197 FTC_ScalerRec scaler
;
200 scaler
.face_id
= fontface
;
201 scaler
.width
= unitsperEm
;
202 scaler
.height
= unitsperEm
;
207 EnterCriticalSection(&freetype_cs
);
208 if (pFTC_Manager_LookupSize(cache_manager
, &scaler
, &size
) == 0) {
209 if (pFT_Load_Glyph(size
->face
, glyph
, FT_LOAD_NO_SCALE
) == 0) {
210 FT_Glyph_Metrics
*metrics
= &size
->face
->glyph
->metrics
;
212 ret
->leftSideBearing
= metrics
->horiBearingX
;
213 ret
->advanceWidth
= metrics
->horiAdvance
;
214 ret
->rightSideBearing
= metrics
->horiAdvance
- metrics
->horiBearingX
- metrics
->width
;
215 ret
->topSideBearing
= metrics
->vertBearingY
;
216 ret
->advanceHeight
= metrics
->vertAdvance
;
217 ret
->bottomSideBearing
= metrics
->vertAdvance
- metrics
->vertBearingY
- metrics
->height
;
218 ret
->verticalOriginY
= metrics
->height
+ metrics
->vertBearingY
;
221 LeaveCriticalSection(&freetype_cs
);
226 BOOL
freetype_is_monospaced(IDWriteFontFace2
*fontface
)
228 BOOL is_monospaced
= FALSE
;
231 EnterCriticalSection(&freetype_cs
);
232 if (pFTC_Manager_LookupFace(cache_manager
, fontface
, &face
) == 0)
233 is_monospaced
= FT_IS_FIXED_WIDTH(face
);
234 LeaveCriticalSection(&freetype_cs
);
236 return is_monospaced
;
239 static inline void ft_vector_to_d2d_point(const FT_Vector
*v
, D2D1_POINT_2F
*p
)
245 static HRESULT
get_outline_data(const FT_Outline
*outline
, struct glyph_outline
**ret
)
247 short i
, j
, contour
= 0;
248 D2D1_POINT_2F
*points
;
253 /* we need all curves in cubic format */
254 for (i
= 0; i
< outline
->n_points
; i
++) {
256 if (!(outline
->tags
[i
] & FT_Curve_Tag_On
)) {
257 if (!(outline
->tags
[i
] & FT_Curve_Tag_Cubic
)) {
264 hr
= new_glyph_outline(count
, ret
);
268 points
= (*ret
)->points
;
271 ft_vector_to_d2d_point(outline
->points
, points
);
272 tags
[0] = OUTLINE_POINT_START
;
274 for (i
= 1, j
= 1; i
< outline
->n_points
; i
++, j
++) {
275 /* mark start of new contour */
276 if (tags
[j
-1] & OUTLINE_POINT_END
)
277 tags
[j
] = OUTLINE_POINT_START
;
281 if (outline
->tags
[i
] & FT_Curve_Tag_On
) {
282 ft_vector_to_d2d_point(outline
->points
+i
, points
+j
);
283 tags
[j
] |= OUTLINE_POINT_LINE
;
286 /* third order curve */
287 if (outline
->tags
[i
] & FT_Curve_Tag_Cubic
) {
288 /* store 3 points, advance 3 points */
290 ft_vector_to_d2d_point(outline
->points
+i
, points
+j
);
291 ft_vector_to_d2d_point(outline
->points
+i
+1, points
+j
+1);
292 ft_vector_to_d2d_point(outline
->points
+i
+2, points
+j
+2);
299 /* Convert the quadratic Beziers to cubic Beziers.
300 The parametric eqn for a cubic Bezier is, from PLRM:
301 r(t) = at^3 + bt^2 + ct + r0
302 with the control points:
307 A quadratic Bezier has the form:
308 p(t) = (1-t)^2 p0 + 2(1-t)t p1 + t^2 p2
310 So equating powers of t leads to:
313 and of course r0 = p0, r3 = p2
317 vec
.x
= 2 * outline
->points
[i
].x
+ outline
->points
[i
-1].x
;
318 vec
.y
= 2 * outline
->points
[i
].y
+ outline
->points
[i
-1].y
;
319 ft_vector_to_d2d_point(&vec
, points
+j
);
324 vec
.x
= 2 * outline
->points
[i
].x
+ outline
->points
[i
+1].x
;
325 vec
.y
= 2 * outline
->points
[i
].y
+ outline
->points
[i
+1].y
;
326 ft_vector_to_d2d_point(&vec
, points
+j
+1);
327 points
[j
+1].x
/= 3.0;
328 points
[j
+1].y
/= 3.0;
331 ft_vector_to_d2d_point(outline
->points
+i
+1, points
+j
+2);
336 tags
[j
] = tags
[j
+1] = tags
[j
+2] = OUTLINE_POINT_BEZIER
;
341 if (i
< outline
->n_points
&& outline
->contours
[contour
] == i
) {
342 tags
[j
] |= OUTLINE_POINT_END
;
350 HRESULT
freetype_get_glyph_outline(IDWriteFontFace2
*fontface
, FLOAT emSize
, UINT16 index
, USHORT simulations
, struct glyph_outline
**ret
)
352 FTC_ScalerRec scaler
;
356 scaler
.face_id
= fontface
;
357 scaler
.width
= emSize
;
358 scaler
.height
= emSize
;
363 EnterCriticalSection(&freetype_cs
);
364 if (pFTC_Manager_LookupSize(cache_manager
, &scaler
, &size
) == 0) {
365 if (pFT_Load_Glyph(size
->face
, index
, FT_LOAD_DEFAULT
) == 0) {
366 FT_Outline
*outline
= &size
->face
->glyph
->outline
;
370 m
.xy
= simulations
& DWRITE_FONT_SIMULATIONS_OBLIQUE
? (1 << 16) / 3 : 0;
372 m
.yy
= -(1 << 16); /* flip Y axis */
374 pFT_Outline_Transform(outline
, &m
);
376 hr
= get_outline_data(outline
, ret
);
378 (*ret
)->advance
= size
->face
->glyph
->metrics
.horiAdvance
>> 6;
381 LeaveCriticalSection(&freetype_cs
);
386 UINT16
freetype_get_glyphcount(IDWriteFontFace2
*fontface
)
391 EnterCriticalSection(&freetype_cs
);
392 if (pFTC_Manager_LookupFace(cache_manager
, fontface
, &face
) == 0)
393 count
= face
->num_glyphs
;
394 LeaveCriticalSection(&freetype_cs
);
399 UINT16
freetype_get_glyphindex(IDWriteFontFace2
*fontface
, UINT32 codepoint
)
403 EnterCriticalSection(&freetype_cs
);
404 glyph
= pFTC_CMapCache_Lookup(cmap_cache
, fontface
, -1, codepoint
);
405 LeaveCriticalSection(&freetype_cs
);
410 #else /* HAVE_FREETYPE */
412 BOOL
init_freetype(void)
417 void release_freetype(void)
421 void freetype_notify_cacheremove(IDWriteFontFace2
*fontface
)
425 HRESULT
freetype_get_design_glyph_metrics(IDWriteFontFace2
*fontface
, UINT16 unitsperEm
, UINT16 glyph
, DWRITE_GLYPH_METRICS
*ret
)
430 BOOL
freetype_is_monospaced(IDWriteFontFace2
*fontface
)
435 HRESULT
freetype_get_glyph_outline(IDWriteFontFace2
*fontface
, FLOAT emSize
, UINT16 index
, USHORT simulations
, struct glyph_outline
**ret
)
441 UINT16
freetype_get_glyphcount(IDWriteFontFace2
*fontface
)
446 UINT16
freetype_get_glyphindex(IDWriteFontFace2
*fontface
, UINT32 codepoint
)
451 #endif /* HAVE_FREETYPE */