fonts.go raw

   1  package p9fonts
   2  
   3  import (
   4  	"fmt"
   5  	"sync"
   6  
   7  	"github.com/p9c/gio/font/opentype"
   8  	"github.com/p9c/gio/text"
   9  	"golang.org/x/image/font/gofont/gomono"
  10  	"golang.org/x/image/font/gofont/gomonobold"
  11  	"golang.org/x/image/font/gofont/gomonobolditalic"
  12  	"golang.org/x/image/font/gofont/gomonoitalic"
  13  
  14  	"github.com/p9c/gel/fonts/bariolbold"
  15  	"github.com/p9c/gel/fonts/bariolbolditalic"
  16  	"github.com/p9c/gel/fonts/bariollight"
  17  	"github.com/p9c/gel/fonts/bariollightitalic"
  18  	"github.com/p9c/gel/fonts/bariolregular"
  19  	"github.com/p9c/gel/fonts/bariolregularitalic"
  20  	"github.com/p9c/gel/fonts/plan9"
  21  )
  22  
  23  var (
  24  	once       sync.Once
  25  	collection []text.FontFace
  26  	Fonts      = map[string]text.Font{
  27  		"plan9":              {Typeface: "plan9"},
  28  		"bariol regular":     {Typeface: "bariol regular"},
  29  		"bariol italic":      {Typeface: "bariol italic", Style: text.Italic},
  30  		"bariol bold":        {Typeface: "bariol bold", Weight: text.Bold},
  31  		"bariol bolditalic":  {Typeface: "bariol bolditalic", Style: text.Italic, Weight: text.Bold},
  32  		"bariol light":       {Typeface: "bariol light", Weight: text.Medium},
  33  		"bariol lightitalic": {Typeface: "bariol lightitalic", Weight: text.Medium, Style: text.Italic},
  34  		"go regular":         {Typeface: "go regular"},
  35  		"go bold":            {Typeface: "go bold", Weight: text.Bold},
  36  		"go bolditalic":      {Typeface: "go bolditalic", Weight: text.Bold, Style: text.Italic},
  37  		"go italic":          {Typeface: "go italic", Style: text.Italic},
  38  	}
  39  )
  40  
  41  func Collection() []text.FontFace {
  42  	once.Do(func() {
  43  		register(Fonts["plan9"], plan9.TTF)
  44  		register(Fonts["bariol regular"], bariolregular.TTF)
  45  		register(Fonts["bariol italic"], bariolregularitalic.TTF)
  46  		register(Fonts["bariol bold"], bariolbold.TTF)
  47  		register(Fonts["bariol bold italic"], bariolbolditalic.TTF)
  48  		register(Fonts["bariol light"], bariollight.TTF)
  49  		register(Fonts["bariol light italic"], bariollightitalic.TTF)
  50  		register(Fonts["go regular"], gomono.TTF)
  51  		register(Fonts["go bold"], gomonobold.TTF)
  52  		register(Fonts["go bolditalic"], gomonobolditalic.TTF)
  53  		register(Fonts["go italic"], gomonoitalic.TTF)
  54  		// Ensure that any outside appends will not reuse the backing store.
  55  		n := len(collection)
  56  		collection = collection[:n:n]
  57  	})
  58  	return collection
  59  }
  60  
  61  func register(fnt text.Font, ttf []byte) {
  62  	face, e := opentype.Parse(ttf)
  63  	if e != nil {
  64  		panic(fmt.Errorf("failed to parse font: %v", e))
  65  	}
  66  	// fnt.Typeface = "Go"
  67  	collection = append(collection, text.FontFace{Font: fnt, Face: face})
  68  }
  69