98 lines
1.7 KiB
Go
98 lines
1.7 KiB
Go
// Copyright 2010 The draw2d Authors. All rights reserved.
|
|
// created: 13/12/2010 by Laurent Le Goff
|
|
|
|
package draw2d
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"log"
|
|
"path"
|
|
|
|
"code.google.com/p/freetype-go/freetype/truetype"
|
|
)
|
|
|
|
var (
|
|
fontFolder = "../resource/font/"
|
|
fonts = make(map[string]*truetype.Font)
|
|
)
|
|
|
|
type FontStyle byte
|
|
|
|
const (
|
|
FontStyleNormal FontStyle = iota
|
|
FontStyleBold
|
|
FontStyleItalic
|
|
)
|
|
|
|
type FontFamily byte
|
|
|
|
const (
|
|
FontFamilySans FontFamily = iota
|
|
FontFamilySerif
|
|
FontFamilyMono
|
|
)
|
|
|
|
type FontData struct {
|
|
Name string
|
|
Family FontFamily
|
|
Style FontStyle
|
|
}
|
|
|
|
func fontFileName(fontData FontData) string {
|
|
fontFileName := fontData.Name
|
|
switch fontData.Family {
|
|
case FontFamilySans:
|
|
fontFileName += "s"
|
|
case FontFamilySerif:
|
|
fontFileName += "r"
|
|
case FontFamilyMono:
|
|
fontFileName += "m"
|
|
}
|
|
if fontData.Style&FontStyleBold != 0 {
|
|
fontFileName += "b"
|
|
} else {
|
|
fontFileName += "r"
|
|
}
|
|
|
|
if fontData.Style&FontStyleItalic != 0 {
|
|
fontFileName += "i"
|
|
}
|
|
fontFileName += ".ttf"
|
|
return fontFileName
|
|
}
|
|
|
|
func RegisterFont(fontData FontData, font *truetype.Font) {
|
|
fonts[fontFileName(fontData)] = font
|
|
}
|
|
|
|
func GetFont(fontData FontData) *truetype.Font {
|
|
fontFileName := fontFileName(fontData)
|
|
font := fonts[fontFileName]
|
|
if font != nil {
|
|
return font
|
|
}
|
|
fonts[fontFileName] = loadFont(fontFileName)
|
|
return fonts[fontFileName]
|
|
}
|
|
|
|
func GetFontFolder() string {
|
|
return fontFolder
|
|
}
|
|
|
|
func SetFontFolder(folder string) {
|
|
fontFolder = folder
|
|
}
|
|
|
|
func loadFont(fontFileName string) *truetype.Font {
|
|
fontBytes, err := ioutil.ReadFile(path.Join(fontFolder, fontFileName))
|
|
if err != nil {
|
|
log.Println(err)
|
|
return nil
|
|
}
|
|
font, err := truetype.Parse(fontBytes)
|
|
if err != nil {
|
|
log.Println(err)
|
|
return nil
|
|
}
|
|
return font
|
|
}
|