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Side by Side Diff: third_party/WebKit/Source/platform/fonts/shaping/HarfBuzzFace.h

Issue 1806653002: Shape unicode-range: font faces in only one iteration (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Update UnicodeRangeSetTests to RefPtrtr, rm copy constructor and test Created 4 years, 9 months ago
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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
(...skipping 13 matching lines...) Expand all
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 #ifndef HarfBuzzFace_h 31 #ifndef HarfBuzzFace_h
32 #define HarfBuzzFace_h 32 #define HarfBuzzFace_h
33 33
34 #include "platform/fonts/UnicodeRangeSet.h"
34 #include "wtf/Allocator.h" 35 #include "wtf/Allocator.h"
35 #include "wtf/HashMap.h" 36 #include "wtf/HashMap.h"
36 #include "wtf/Noncopyable.h" 37 #include "wtf/Noncopyable.h"
37 #include "wtf/PassRefPtr.h" 38 #include "wtf/PassRefPtr.h"
38 #include "wtf/RefCounted.h" 39 #include "wtf/RefCounted.h"
39 #include "wtf/RefPtr.h" 40 #include "wtf/RefPtr.h"
40 #include "wtf/text/CharacterNames.h" 41 #include "wtf/text/CharacterNames.h"
41 42
42 #include <hb.h> 43 #include <hb.h>
43 44
44 namespace blink { 45 namespace blink {
45 46
46 class FontPlatformData; 47 class FontPlatformData;
47 48
48 class HarfBuzzFace : public RefCounted<HarfBuzzFace> { 49 class HarfBuzzFace : public RefCounted<HarfBuzzFace> {
49 WTF_MAKE_NONCOPYABLE(HarfBuzzFace); 50 WTF_MAKE_NONCOPYABLE(HarfBuzzFace);
50 public: 51 public:
51 static const hb_tag_t vertTag; 52 static const hb_tag_t vertTag;
52 static const hb_tag_t vrt2Tag; 53 static const hb_tag_t vrt2Tag;
53 54
54 static PassRefPtr<HarfBuzzFace> create(FontPlatformData* platformData, uint6 4_t uniqueID) 55 static PassRefPtr<HarfBuzzFace> create(FontPlatformData* platformData, uint6 4_t uniqueID)
55 { 56 {
56 return adoptRef(new HarfBuzzFace(platformData, uniqueID)); 57 return adoptRef(new HarfBuzzFace(platformData, uniqueID));
57 } 58 }
58 ~HarfBuzzFace(); 59 ~HarfBuzzFace();
59 60
60 // In order to support the restricting effect of unicode-range optionally a 61 // In order to support the restricting effect of unicode-range optionally a
61 // range restriction can be passed in, which will restrict which glyphs we 62 // range restriction can be passed in, which will restrict which glyphs we
62 // return in the harfBuzzGetGlyph function. 63 // return in the harfBuzzGetGlyph function.
63 hb_font_t* createFont(unsigned rangeFrom = 0, unsigned rangeTo = kMaxCodepoi nt) const; 64 hb_font_t* createFont(PassRefPtr<UnicodeRangeSet> = nullptr) const;
64 hb_face_t* face() const { return m_face; } 65 hb_face_t* face() const { return m_face; }
65 66
66 private: 67 private:
67 HarfBuzzFace(FontPlatformData*, uint64_t); 68 HarfBuzzFace(FontPlatformData*, uint64_t);
68 69
69 hb_face_t* createFace(); 70 hb_face_t* createFace();
70 71
71 FontPlatformData* m_platformData; 72 FontPlatformData* m_platformData;
72 uint64_t m_uniqueID; 73 uint64_t m_uniqueID;
73 hb_face_t* m_face; 74 hb_face_t* m_face;
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84 static void deletePtr(hb_font_t* font) 85 static void deletePtr(hb_font_t* font)
85 { 86 {
86 if (font) 87 if (font)
87 hb_font_destroy(font); 88 hb_font_destroy(font);
88 } 89 }
89 }; 90 };
90 91
91 } // namespace WTF 92 } // namespace WTF
92 93
93 #endif // HarfBuzzFace_h 94 #endif // HarfBuzzFace_h
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