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Fonts loadable from bytes.

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This commit is contained in:
Daniel Schmidt 2023-05-14 09:50:17 +02:00
parent 79c738c1e5
commit e37694dc74
1 changed files with 42 additions and 11 deletions
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53
font.go
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@ -12,16 +12,10 @@ type Fonts struct {
Italic font.Face
}
// LoadFace loads a font face from a file. The dpi and size are used to generate the font face.
//
// Example: LoadFace("./fonts/Mono-Regular.ttf", 72.0, 16.0)
func LoadFace(file string, dpi float64, size float64) (font.Face, error) {
data, err := os.ReadFile(file)
if err != nil {
panic(err)
}
tt, err := opentype.Parse(data)
// LoadFaceBytes loads a font face from bytes. The dpi and size are used to generate the font face.
// The normal, bold, and italic files must be provided. Supports ttf and otf.
func LoadFaceBytes(file []byte, dpi float64, size float64) (font.Face, error) {
tt, err := opentype.Parse(file)
if err != nil {
panic(err)
}
@ -38,8 +32,45 @@ func LoadFace(file string, dpi float64, size float64) (font.Face, error) {
return face, nil
}
// LoadFacesBytes loads a set of fonts from bytes. The normal, bold, and italic files
// must be provided. The dpi and size are used to generate the font faces. Supports ttf and otf.
func LoadFacesBytes(normal []byte, bold []byte, italic []byte, dpi float64, size float64) (Fonts, error) {
normalFace, err := LoadFaceBytes(normal, dpi, size)
if err != nil {
return Fonts{}, err
}
boldFace, err := LoadFaceBytes(bold, dpi, size)
if err != nil {
return Fonts{}, err
}
italicFace, err := LoadFaceBytes(italic, dpi, size)
if err != nil {
return Fonts{}, err
}
return Fonts{
Normal: normalFace,
Bold: boldFace,
Italic: italicFace,
}, nil
}
// LoadFace loads a font face from a file. The dpi and size are used to generate the font face. Supports ttf and otf.
//
// Example: LoadFace("./fonts/Mono-Regular.ttf", 72.0, 16.0)
func LoadFace(file string, dpi float64, size float64) (font.Face, error) {
data, err := os.ReadFile(file)
if err != nil {
panic(err)
}
return LoadFaceBytes(data, dpi, size)
}
// LoadFaces loads a set of fonts from files. The normal, bold, and italic files
// must be provided. The dpi and size are used to generate the font faces.
// must be provided. The dpi and size are used to generate the font faces. Supports ttf and otf.
func LoadFaces(normal string, bold string, italic string, dpi float64, size float64) (Fonts, error) {
normalFace, err := LoadFace(normal, dpi, size)
if err != nil {