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45 lines
940 B
45 lines
940 B
2 years ago
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package base64Captcha
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import (
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"embed"
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"github.com/golang/freetype"
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"github.com/golang/freetype/truetype"
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)
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type EmbeddedFontsStorage struct {
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fs embed.FS
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}
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func (s *EmbeddedFontsStorage) LoadFontByName(name string) *truetype.Font {
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fontBytes, err := s.fs.ReadFile(name)
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if err != nil {
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panic(err)
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}
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//font file bytes to trueTypeFont
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trueTypeFont, err := freetype.ParseFont(fontBytes)
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if err != nil {
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panic(err)
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}
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return trueTypeFont
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}
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// LoadFontsByNames import fonts from dir.
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// make the simple-font(RitaSmith.ttf) the first font of trueTypeFonts.
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func (s *EmbeddedFontsStorage) LoadFontsByNames(assetFontNames []string) []*truetype.Font {
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fonts := make([]*truetype.Font, 0)
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for _, assetName := range assetFontNames {
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f := s.LoadFontByName(assetName)
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fonts = append(fonts, f)
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}
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return fonts
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}
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func NewEmbeddedFontsStorage(fs embed.FS) *EmbeddedFontsStorage {
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return &EmbeddedFontsStorage{
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fs: fs,
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}
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}
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