1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef SkFontStyle_DEFINED
9 #define SkFontStyle_DEFINED
10 
11 #include "SkTypes.h"
12 
13 class SK_API SkFontStyle {
14 public:
15     enum Weight {
16         kInvisible_Weight   =    0,
17         kThin_Weight        =  100,
18         kExtraLight_Weight  =  200,
19         kLight_Weight       =  300,
20         kNormal_Weight      =  400,
21         kMedium_Weight      =  500,
22         kSemiBold_Weight    =  600,
23         kBold_Weight        =  700,
24         kExtraBold_Weight   =  800,
25         kBlack_Weight       =  900,
26         kExtraBlack_Weight  = 1000,
27     };
28 
29     enum Width {
30         kUltraCondensed_Width   = 1,
31         kExtraCondensed_Width   = 2,
32         kCondensed_Width        = 3,
33         kSemiCondensed_Width    = 4,
34         kNormal_Width           = 5,
35         kSemiExpanded_Width     = 6,
36         kExpanded_Width         = 7,
37         kExtraExpanded_Width    = 8,
38         kUltraExpanded_Width    = 9,
39     };
40 
41     enum Slant {
42         kUpright_Slant,
43         kItalic_Slant,
44         kOblique_Slant,
45     };
46 
SkFontStyle(int weight,int width,Slant slant)47     constexpr SkFontStyle(int weight, int width, Slant slant) : fValue(
48         (SkTPin<int>(weight, kInvisible_Weight, kExtraBlack_Weight)) +
49         (SkTPin<int>(width, kUltraCondensed_Width, kUltraExpanded_Width) << 16) +
50         (SkTPin<int>(slant, kUpright_Slant, kOblique_Slant) << 24)
51      ) { }
52 
SkFontStyle()53     constexpr SkFontStyle() : SkFontStyle{kNormal_Weight, kNormal_Width, kUpright_Slant} { }
54 
55     bool operator==(const SkFontStyle& rhs) const {
56         return fValue == rhs.fValue;
57     }
58 
weight()59     int weight() const { return fValue & 0xFFFF; }
width()60     int width() const { return (fValue >> 16) & 0xFF; }
slant()61     Slant slant() const { return (Slant)((fValue >> 24) & 0xFF); }
62 
Normal()63     static constexpr SkFontStyle Normal() {
64         return SkFontStyle(kNormal_Weight, kNormal_Width, kUpright_Slant);
65     }
Bold()66     static constexpr SkFontStyle Bold() {
67         return SkFontStyle(kBold_Weight,   kNormal_Width, kUpright_Slant);
68     }
Italic()69     static constexpr SkFontStyle Italic() {
70         return SkFontStyle(kNormal_Weight, kNormal_Width, kItalic_Slant );
71     }
BoldItalic()72     static constexpr SkFontStyle BoldItalic() {
73         return SkFontStyle(kBold_Weight,   kNormal_Width, kItalic_Slant );
74     }
75 
76 private:
77     uint32_t fValue;
78 };
79 
80 #endif
81