46 lines
1.0 KiB
Go
46 lines
1.0 KiB
Go
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package streamdeck
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import (
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"image"
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"image/color"
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"image/draw"
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"strings"
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"golang.org/x/image/font"
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"golang.org/x/image/font/basicfont"
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"golang.org/x/image/math/fixed"
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)
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func TextImage(bg color.Color, fg color.Color, lines ...string) image.Image {
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img := image.NewRGBA(image.Rect(0, 0, keySize, keySize))
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draw.Draw(img, img.Bounds(), &image.Uniform{bg}, image.Point{}, draw.Src)
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face := basicfont.Face7x13
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metrics := face.Metrics()
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lineHeight := metrics.Height.Ceil()
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totalHeight := lineHeight * len(lines)
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startY := (keySize-totalHeight)/2 + metrics.Ascent.Ceil()
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for i, line := range lines {
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width := font.MeasureString(face, line).Ceil()
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x := (keySize - width) / 2
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y := startY + i*lineHeight
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d := &font.Drawer{
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Dst: img,
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Src: &image.Uniform{fg},
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Face: face,
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Dot: fixed.P(x, y),
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}
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d.DrawString(line)
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}
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return img
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}
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func (d *Device) SetKeyText(key int, bg color.Color, fg color.Color, text string) error {
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lines := strings.Split(text, "\n")
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return d.SetKeyImage(key, TextImage(bg, fg, lines...))
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}
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