94 lines
2.4 KiB
Go
94 lines
2.4 KiB
Go
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package alui
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import (
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"opslag.de/schobers/allg5"
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"opslag.de/schobers/geom"
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)
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type Fonts struct {
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fonts map[string]*allg5.Font
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}
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type FontDescription struct {
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Path string
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Size int
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Name string
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}
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func NewFonts() *Fonts {
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return &Fonts{map[string]*allg5.Font{}}
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}
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func (f *Fonts) Destroy() {
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for _, font := range f.fonts {
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font.Destroy()
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}
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f.fonts = nil
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}
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func (f *Fonts) Draw(font string, left, top float32, color allg5.Color, text string) {
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f.DrawFont(f.Get(font), left, top, color, text)
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}
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func (f *Fonts) DrawAlign(font string, left, top, right float32, color allg5.Color, align allg5.HorizontalAlignment, text string) {
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f.DrawAlignFont(f.Get(font), left, top, right, color, align, text)
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}
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func (f *Fonts) DrawAlignFont(font *allg5.Font, left, top, right float32, color allg5.Color, align allg5.HorizontalAlignment, text string) {
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switch align {
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case allg5.AlignCenter:
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center, top := geom.Round32(.5*(left+right)), geom.Round32(top)
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font.Draw(center, top, color, allg5.AlignCenter, text)
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case allg5.AlignRight:
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right, top = geom.Round32(right), geom.Round32(top)
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font.Draw(right, top, color, allg5.AlignRight, text)
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default:
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left, top = geom.Round32(left), geom.Round32(top)
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font.Draw(left, top, color, allg5.AlignLeft, text)
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}
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}
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func (f *Fonts) DrawCenter(font string, center, top float32, color allg5.Color, text string) {
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f.DrawCenterFont(f.Get(font), center, top, color, text)
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}
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func (f *Fonts) DrawCenterFont(font *allg5.Font, center, top float32, color allg5.Color, text string) {
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f.DrawAlignFont(font, center, top, center, color, allg5.AlignCenter, text)
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}
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func (f *Fonts) DrawFont(font *allg5.Font, left, top float32, color allg5.Color, text string) {
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left, top = geom.Round32(left), geom.Round32(top)
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font.Draw(left, top, color, allg5.AlignLeft, text)
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}
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func (f *Fonts) Len() int { return len(f.fonts) }
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func (f *Fonts) Load(path string, size int, name string) error {
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font, err := allg5.LoadTTFFont(path, size)
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if err != nil {
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return err
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}
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if old := f.fonts[name]; old != nil {
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old.Destroy()
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}
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f.fonts[name] = font
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return nil
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}
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func (f *Fonts) LoadFonts(descriptions ...FontDescription) error {
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for _, desc := range descriptions {
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err := f.Load(desc.Path, desc.Size, desc.Name)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (f *Fonts) Get(name string) *allg5.Font {
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if name == "" {
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return f.Get("default")
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}
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return f.fonts[name]
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}
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