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Side by Side Diff: include/ports/SkTypeface_android.h

Issue 434623002: Remove ALL font fallback logic from Skia. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: fix win font host Created 6 years, 4 months ago
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1 /* 1 /*
2 * Copyright 2012 Google Inc. 2 * Copyright 2012 Google Inc.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 8
9 #ifndef SkTypeface_android_DEFINED 9 #ifndef SkTypeface_android_DEFINED
10 #define SkTypeface_android_DEFINED 10 #define SkTypeface_android_DEFINED
(...skipping 21 matching lines...) Expand all
32 */ 32 */
33 SK_API bool SkGetFallbackFamilyNameForChar(SkUnichar uni, const char* lang, SkSt ring* name); 33 SK_API bool SkGetFallbackFamilyNameForChar(SkUnichar uni, const char* lang, SkSt ring* name);
34 34
35 /** 35 /**
36 * For test only. 36 * For test only.
37 * Load font config from given xml files, instead of those from Android system. 37 * Load font config from given xml files, instead of those from Android system.
38 */ 38 */
39 SK_API void SkUseTestFontConfigFile(const char* mainconf, const char* fallbackco nf, 39 SK_API void SkUseTestFontConfigFile(const char* mainconf, const char* fallbackco nf,
40 const char* fontsdir); 40 const char* fontsdir);
41 41
42 /**
43 * Given a "current" fontID, return a ref to the next logical typeface
44 * when searching fonts for a given unicode value. Typically the caller
45 * will query a given font, and if a unicode value is not supported, they
46 * will call this, and if 0 is not returned, will search that font, and so
47 * on. This process must be finite, and when the fonthost sees a
48 * font with no logical successor, it must return NULL.
49 *
50 * The original fontID is also provided. This is the initial font that was
51 * stored in the typeface of the caller. It is provided as an aid to choose
52 * the best next logical font. e.g. If the original font was bold or serif,
53 * but the 2nd in the logical chain was plain, then a subsequent call to
54 * get the 3rd can still inspect the original, and try to match its
55 * stylistic attributes.
56 */
57 SkTypeface* SkAndroidNextLogicalTypeface(SkFontID currFontID, SkFontID origFontI D,
58 const SkPaintOptionsAndroid& options);
59
60 /**
61 * Given a glyphID (built using fallback font chaining) and its origin typeface
62 * return the actual typeface within the fallback chain that this glyphID
63 * resolves to. If no suitable typeface is found then NULL is returned. However,
64 * if returned typeface is not NULL it is assumed to be globally cached so the
65 * caller need not ref it.
66 *
67 * Optionally, if lower/upper bound params are provided and the returned
68 * typeface is not NULL, then these params are populated with the range of
69 * glyphIDs that this typeface is capable of resolving. The lower bound is
70 * inclusive while the upper bound is exclusive.
71 */
72 SkTypeface* SkGetTypefaceForGlyphID(uint16_t glyphID, const SkTypeface* origType face,
73 const SkPaintOptionsAndroid& options,
74 int* lowerBounds = NULL, int* upperBounds = NULL);
75
76 #endif // #ifdef SK_BUILD_FOR_ANDROID 42 #endif // #ifdef SK_BUILD_FOR_ANDROID
77 #endif // #ifndef SkTypeface_android_DEFINED 43 #endif // #ifndef SkTypeface_android_DEFINED
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