en2zmax/streamdeck-lets-go
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Apply show_label_background to device rendering and display keys

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This commit is contained in:
Maksim Totmin 2026-06-17 20:19:06 +07:00
parent c6103cd9a8
commit 777a8109b2
2 changed files with 55 additions and 21 deletions
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7
deck.go
View File

@ -8,6 +8,7 @@ import (
"log/slog"
"sync"
"time"
"unicode/utf8"
"github.com/bearsh/hid"
"github.com/dh1tw/streamdeck"
@ -319,7 +320,7 @@ func (d *Deck) WriteText(keyIndex int, text string, bg color.Color, fontName str
})
}
func (d *Deck) WriteTextOnImage(keyIndex int, img image.Image, text, fontName string, fontSize float64) error {
func (d *Deck) WriteTextOnImage(keyIndex int, img image.Image, text, fontName string, fontSize float64, showLabelBackground bool) error {
ks := d.cfg.KeySize
g := gift.New(
@ -338,12 +339,14 @@ func (d *Deck) WriteTextOnImage(keyIndex int, img image.Image, text, fontName st
font = streamdeck.MonoMedium
}
if showLabelBackground {
barHeight := 20
if ks < 72 {
barHeight = 18
}
barRect := image.Rect(0, ks-barHeight, ks, ks)
draw.Draw(rgba, barRect, &image.Uniform{color.RGBA{0, 0, 0, 180}}, image.Point{}, draw.Over)
}
offsetY := 24
baselineY := ks - 6
@ -353,7 +356,7 @@ func (d *Deck) WriteTextOnImage(keyIndex int, img image.Image, text, fontName st
}
charW := fontSize * 0.55
textW := int(float64(len(text)) * charW)
textW := int(float64(utf8.RuneCountInString(text)) * charW)
posX := (ks - textW) / 2
if posX < 2 {
posX = 2

39
page.go
View File

@ -49,6 +49,7 @@ type PageManager struct {
displayOutputs map[int]*DisplayOutput
displayMu sync.RWMutex
defaultFont string
showLabelBackground bool
}
func NewPageManager(deck *Deck) *PageManager {
@ -221,7 +222,7 @@ func (pm *PageManager) renderKey(idx int, k *config.KeyConfig) {
}
if k.Label != "" {
if err := pm.deck.WriteTextOnImage(idx, img, k.Label, onImgFontName, onImgFontSize); err != nil {
if err := pm.deck.WriteTextOnImage(idx, img, k.Label, onImgFontName, onImgFontSize, pm.showLabelBackground); err != nil {
slog.Warn("write text on image", "error", err)
pm.deck.FillImage(idx, img)
}
@ -237,7 +238,7 @@ func (pm *PageManager) renderKey(idx int, k *config.KeyConfig) {
ks := pm.deck.KeySize()
img := image.NewRGBA(image.Rect(0, 0, ks, ks))
draw.Draw(img, img.Bounds(), &image.Uniform{bg}, image.Point{}, draw.Src)
if err := pm.deck.WriteTextOnImage(idx, img, k.Label, fontName, fontSize); err != nil {
if err := pm.deck.WriteTextOnImage(idx, img, k.Label, fontName, fontSize, pm.showLabelBackground); err != nil {
slog.Warn("write text on image", "error", err)
pm.deck.FillImage(idx, img)
}
@ -469,7 +470,7 @@ func (pm *PageManager) renderKeyOutput(idx int, d *config.DisplayCfg, output str
}
}
composite := renderUnicodeTextOnImage(img, text, fontSize, pm.deck.KeySize(), fg)
composite := renderUnicodeTextOnImage(img, text, fontSize, pm.deck.KeySize(), fg, pm.showLabelBackground)
if err := pm.deck.FillImage(idx, composite); err != nil {
slog.Warn("fill image", "error", err)
}
@ -667,7 +668,7 @@ func renderUnicodeText(text string, fontSize float64, keySize int, bg, fg color.
return rgba
}
func renderUnicodeTextOnImage(baseImg image.Image, text string, fontSize float64, keySize int, fg color.Color) *image.RGBA {
func renderUnicodeTextOnImage(baseImg image.Image, text string, fontSize float64, keySize int, fg color.Color, showLabelBackground bool) *image.RGBA {
g := gift.New(gift.Resize(keySize, keySize, gift.LanczosResampling))
rgba := image.NewRGBA(image.Rect(0, 0, keySize, keySize))
g.Draw(rgba, baseImg)
@ -676,8 +677,10 @@ func renderUnicodeTextOnImage(baseImg image.Image, text string, fontSize float64
if keySize < 72 {
barHeight = 16
}
if showLabelBackground {
barRect := image.Rect(0, keySize-barHeight, keySize, keySize)
draw.Draw(rgba, barRect, &image.Uniform{color.RGBA{0, 0, 0, 180}}, image.Point{}, draw.Over)
}
if text == "" || fg == nil {
return rgba
@ -872,6 +875,34 @@ func loadImage(path string, targetSize int, faScale float64) (image.Image, error
return nil, fmt.Errorf("decode: %w", err)
}
// For raster images, apply scaling and centering when targetSize > 0
if targetSize > 0 && faScale > 0 {
displaySize := int(float64(targetSize) * faScale)
if displaySize > targetSize {
displaySize = targetSize
}
if displaySize < 1 {
displaySize = 1
}
// Resize to displaySize
if img.Bounds().Dx() != displaySize || img.Bounds().Dy() != displaySize {
g := gift.New(gift.Resize(displaySize, displaySize, gift.LanczosResampling))
scaled := image.NewRGBA(image.Rect(0, 0, displaySize, displaySize))
g.Draw(scaled, img)
img = scaled
}
// Center on targetSize canvas
if displaySize < targetSize {
canvas := image.NewRGBA(image.Rect(0, 0, targetSize, targetSize))
offX := (targetSize - displaySize) / 2
offY := (targetSize - displaySize) / 2
draw.Draw(canvas, image.Rect(offX, offY, offX+displaySize, offY+displaySize), img, image.Point{}, draw.Over)
img = canvas
}
}
imageCache.Store(key, img)
return img, nil
}