zntg/allg5ui/font.go

package allg5ui

import (
	"opslag.de/schobers/allg5"
	"opslag.de/schobers/geom"
)

type FontDefinition struct {
	Name string
	Size int
}

func NewFontDefinition(name string, size int) FontDefinition {
	return FontDefinition{Name: name, Size: size}
}

type font struct {
	f *allg5.Font
}

func newFont(f *allg5.Font) *font {
	return &font{f}
}

func (f *font) Destroy() {
	f.f.Destroy()
}

func (f *font) Height() float32 {
	if f == nil {
		return 0
	}
	return f.f.Height()
}

func (f *font) WidthOf(t string) float32 {
	return f.f.TextWidth(t)
}

func (f *font) Measure(t string) geom.RectangleF32 {
	if f == nil {
		return geom.RectangleF32{}
	}
	var x, y, w, h = f.f.TextDimensions(t)
	return geom.RectF32(x, y, x+w, y+h)
}