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1 /* | 1 /* |
2 * Copyright (c) 2012 Google Inc. All rights reserved. | 2 * Copyright (c) 2012 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #include "config.h" | 31 #include "config.h" |
32 #include "platform/fonts/harfbuzz/HarfBuzzFace.h" | 32 #include "platform/fonts/harfbuzz/HarfBuzzFace.h" |
33 | 33 |
34 #include "hb-coretext.h" | |
35 #include "hb.h" | |
34 #include "platform/fonts/FontPlatformData.h" | 36 #include "platform/fonts/FontPlatformData.h" |
35 #include "platform/fonts/SimpleFontData.h" | 37 #include "platform/fonts/SimpleFontData.h" |
36 #include "platform/fonts/harfbuzz/HarfBuzzShaper.h" | 38 #include "platform/fonts/harfbuzz/HarfBuzzShaper.h" |
39 #include <AppKit/AppKit.h> | |
40 #include <ApplicationServices/ApplicationServices.h> | |
37 | 41 |
38 #include <ApplicationServices/ApplicationServices.h> | 42 // The names of these constants were taken from history |
39 #include "hb.h" | 43 // /trunk/WebKit/WebCoreSupport.subproj/WebTextRenderer.m@9311. The values |
44 // were derived from the assembly of libWebKitSystemInterfaceLeopard.a. | |
45 enum CGFontRenderingMode { | |
46 kCGFontRenderingMode1BitPixelAligned = 0x0, | |
47 kCGFontRenderingModeAntialiasedPixelAligned = 0x1, | |
48 kCGFontRenderingModeAntialiased = 0xd | |
49 }; | |
50 | |
51 // Forward declare Mac SPIs. | |
52 extern "C" { | |
53 // Request for public API: rdar://13803586 | |
54 bool CGFontGetGlyphAdvancesForStyle(CGFontRef font, CGAffineTransform* transform , CGFontRenderingMode renderingMode, ATSGlyphRef* glyph, size_t count, CGSize* a dvance); | |
55 } | |
56 | |
57 static CGFontRenderingMode cgFontRenderingModeForNSFont(NSFont* font) { | |
58 if (!font) | |
59 return kCGFontRenderingModeAntialiasedPixelAligned; | |
60 | |
61 switch ([font renderingMode]) { | |
62 case NSFontIntegerAdvancementsRenderingMode: return kCGFontRenderingMode 1BitPixelAligned; | |
63 case NSFontAntialiasedIntegerAdvancementsRenderingMode: return kCGFontRe nderingModeAntialiasedPixelAligned; | |
64 default: return kCGFontRenderingModeAntialiased; | |
65 } | |
66 } | |
40 | 67 |
41 namespace blink { | 68 namespace blink { |
42 | 69 |
70 void advanceForGlyph(Glyph glyph, const FontPlatformData& platformData, CGSize* advance) { | |
71 float pointSize = platformData.m_textSize; | |
72 NSFont *font = platformData.font(); | |
73 CGAffineTransform m = CGAffineTransformMakeScale(pointSize, pointSize); | |
74 if (!CGFontGetGlyphAdvancesForStyle(platformData.cgFont(), &m, cgFontRenderi ngModeForNSFont(font), &glyph, 1, advance)) { | |
75 WTF_LOG_ERROR("Unable to retrieve glyph advance for %@ %f", [font displa yName], pointSize); | |
eae
2014/09/26 14:32:08
Is this something we want to add an ASSERT for?
| |
76 advance->width = 0; | |
77 } | |
78 } | |
79 | |
43 static hb_position_t floatToHarfBuzzPosition(CGFloat value) | 80 static hb_position_t floatToHarfBuzzPosition(CGFloat value) |
44 { | 81 { |
45 return static_cast<hb_position_t>(value * (1 << 16)); | 82 return static_cast<hb_position_t>(value * (1 << 16)); |
46 } | 83 } |
47 | 84 |
48 static hb_bool_t getGlyph(hb_font_t* hbFont, void* fontData, hb_codepoint_t unic ode, hb_codepoint_t variationSelector, hb_codepoint_t* glyph, void* userData) | 85 static hb_bool_t getGlyph(hb_font_t* hbFont, void* fontData, hb_codepoint_t unic ode, hb_codepoint_t variationSelector, hb_codepoint_t* glyph, void* userData) |
49 { | 86 { |
50 CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont(); | 87 CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont(); |
51 UniChar characters[4]; | 88 UniChar characters[4]; |
52 CGGlyph cgGlyphs[4]; | 89 CGGlyph cgGlyphs[4]; |
53 size_t length = 0; | 90 size_t length = 0; |
54 U16_APPEND_UNSAFE(characters, length, unicode); | 91 U16_APPEND_UNSAFE(characters, length, unicode); |
55 if (!CTFontGetGlyphsForCharacters(ctFont, characters, cgGlyphs, length)) | 92 if (!CTFontGetGlyphsForCharacters(ctFont, characters, cgGlyphs, length)) |
56 return false; | 93 return false; |
57 *glyph = cgGlyphs[0]; | 94 *glyph = cgGlyphs[0]; |
58 return true; | 95 return true; |
59 } | 96 } |
60 | 97 |
98 | |
99 void advanceForGlyph(Glyph, const FontPlatformData&, CGSize* advance); | |
100 | |
61 static hb_position_t getGlyphHorizontalAdvance(hb_font_t* hbFont, void* fontData , hb_codepoint_t glyph, void* userData) | 101 static hb_position_t getGlyphHorizontalAdvance(hb_font_t* hbFont, void* fontData , hb_codepoint_t glyph, void* userData) |
62 { | 102 { |
63 CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont(); | 103 // CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont( ); |
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2014/09/26 14:32:08
Remove commented out code.
| |
64 CGGlyph cgGlyph = glyph; | 104 // CGGlyph cgGlyph = glyph; |
65 CGFloat advance = CTFontGetAdvancesForGlyphs(ctFont, kCTFontHorizontalOrient ation, &cgGlyph, 0, 1); | 105 // CGFloat advance = CTFontGetAdvancesForGlyphs(ctFont, kCTFontHorizontalOri entation, &cgGlyph, 0, 1); |
66 return floatToHarfBuzzPosition(advance); | 106 // return floatToHarfBuzzPosition(advance); |
107 CGSize advance; | |
108 FontPlatformData* platformData = reinterpret_cast<FontPlatformData*>(fontDat a); | |
109 advanceForGlyph(glyph, *platformData, &advance); | |
110 float syntheticBoldOffset = platformData->m_syntheticBold ? 1.0f : 0.0f; | |
111 return floatToHarfBuzzPosition(advance.width + syntheticBoldOffset); | |
67 } | 112 } |
68 | 113 |
69 static hb_bool_t getGlyphHorizontalOrigin(hb_font_t* hbFont, void* fontData, hb_ codepoint_t glyph, hb_position_t* x, hb_position_t* y, void* userData) | 114 static hb_bool_t getGlyphHorizontalOrigin(hb_font_t* hbFont, void* fontData, hb_ codepoint_t glyph, hb_position_t* x, hb_position_t* y, void* userData) |
70 { | 115 { |
71 return true; | 116 return true; |
72 } | 117 } |
73 | 118 |
74 static hb_bool_t getGlyphExtents(hb_font_t* hbFont, void* fontData, hb_codepoint _t glyph, hb_glyph_extents_t* extents, void* userData) | 119 static hb_bool_t getGlyphExtents(hb_font_t* hbFont, void* fontData, hb_codepoint _t glyph, hb_glyph_extents_t* extents, void* userData) |
75 { | 120 { |
76 CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont(); | 121 CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont(); |
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93 harfBuzzCoreTextFontFuncs = hb_font_funcs_create(); | 138 harfBuzzCoreTextFontFuncs = hb_font_funcs_create(); |
94 hb_font_funcs_set_glyph_func(harfBuzzCoreTextFontFuncs, getGlyph, 0, 0); | 139 hb_font_funcs_set_glyph_func(harfBuzzCoreTextFontFuncs, getGlyph, 0, 0); |
95 hb_font_funcs_set_glyph_h_advance_func(harfBuzzCoreTextFontFuncs, getGly phHorizontalAdvance, 0, 0); | 140 hb_font_funcs_set_glyph_h_advance_func(harfBuzzCoreTextFontFuncs, getGly phHorizontalAdvance, 0, 0); |
96 hb_font_funcs_set_glyph_h_origin_func(harfBuzzCoreTextFontFuncs, getGlyp hHorizontalOrigin, 0, 0); | 141 hb_font_funcs_set_glyph_h_origin_func(harfBuzzCoreTextFontFuncs, getGlyp hHorizontalOrigin, 0, 0); |
97 hb_font_funcs_set_glyph_extents_func(harfBuzzCoreTextFontFuncs, getGlyph Extents, 0, 0); | 142 hb_font_funcs_set_glyph_extents_func(harfBuzzCoreTextFontFuncs, getGlyph Extents, 0, 0); |
98 hb_font_funcs_make_immutable(harfBuzzCoreTextFontFuncs); | 143 hb_font_funcs_make_immutable(harfBuzzCoreTextFontFuncs); |
99 } | 144 } |
100 return harfBuzzCoreTextFontFuncs; | 145 return harfBuzzCoreTextFontFuncs; |
101 } | 146 } |
102 | 147 |
103 static void releaseTableData(void* userData) | |
104 { | |
105 CFDataRef cfData = reinterpret_cast<CFDataRef>(userData); | |
106 CFRelease(cfData); | |
107 } | |
108 | |
109 static hb_blob_t* harfBuzzCoreTextGetTable(hb_face_t* face, hb_tag_t tag, void* userData) | |
110 { | |
111 CGFontRef cgFont = reinterpret_cast<CGFontRef>(userData); | |
112 if (!cgFont) | |
113 return 0; | |
114 CFDataRef cfData = CGFontCopyTableForTag(cgFont, tag); | |
115 if (!cfData) | |
116 return 0; | |
117 | |
118 const char* data = reinterpret_cast<const char*>(CFDataGetBytePtr(cfData)); | |
119 const size_t length = CFDataGetLength(cfData); | |
120 if (!data || !length) | |
121 return 0; | |
122 return hb_blob_create(data, length, HB_MEMORY_MODE_READONLY, reinterpret_cas t<void*>(const_cast<__CFData*>(cfData)), releaseTableData); | |
123 } | |
124 | |
125 hb_face_t* HarfBuzzFace::createFace() | 148 hb_face_t* HarfBuzzFace::createFace() |
126 { | 149 { |
127 // It seems that CTFontCopyTable of MacOSX10.5 sdk doesn't work for | 150 hb_face_t* face = hb_coretext_face_create(m_platformData->cgFont()); |
128 // OpenType layout tables(GDEF, GSUB, GPOS). Use CGFontCopyTableForTag inste ad. | |
129 hb_face_t* face = hb_face_create_for_tables(harfBuzzCoreTextGetTable, m_plat formData->cgFont(), 0); | |
130 ASSERT(face); | 151 ASSERT(face); |
131 return face; | 152 return face; |
132 } | 153 } |
133 | 154 |
134 hb_font_t* HarfBuzzFace::createFont() | 155 hb_font_t* HarfBuzzFace::createFont() |
135 { | 156 { |
136 hb_font_t* font = hb_font_create(m_face); | 157 hb_font_t* font = hb_font_create(m_face); |
137 hb_font_set_funcs(font, harfBuzzCoreTextGetFontFuncs(), m_platformData, 0); | 158 hb_font_set_funcs(font, harfBuzzCoreTextGetFontFuncs(), m_platformData, 0); |
138 const float size = m_platformData->m_textSize; | 159 const float size = m_platformData->m_textSize; |
139 hb_font_set_ppem(font, size, size); | 160 hb_font_set_ppem(font, size, size); |
140 const int scale = (1 << 16) * static_cast<int>(size); | 161 const int scale = (1 << 16) * static_cast<int>(size); |
141 hb_font_set_scale(font, scale, scale); | 162 hb_font_set_scale(font, scale, scale); |
142 hb_font_make_immutable(font); | 163 hb_font_make_immutable(font); |
143 return font; | 164 return font; |
144 } | 165 } |
145 | 166 |
146 } // namespace blink | 167 } // namespace blink |
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