Initial commit: Stream Deck daemon with web UI

- Web-based key editor (Alpine.js SPA) - Actions: shell commands, scripts, built-in media/volume/brightness, page switching - Keyboard shortcut action (wtype/xdotool) - On-device display with periodic command output - Auto page switching (Hyprland, Sway, Niri, GNOME, KDE, X11) - Screensaver with idle detection - Config hot-reload - Multi-device support
2026-06-16 22:35:14 +07:00
commit 4c98a9d670
29 changed files with 8208 additions and 0 deletions
@@ -0,0 +1,132 @@
+package main
+
+import (
+	"image"
+	"image/color"
+	"image/draw"
+
+	"github.com/disintegration/gift"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/basicfont"
+	"golang.org/x/image/math/fixed"
+
+	"streamdeck-lets-go/internal/config"
+)
+
+func RenderKeyToImage(k *config.KeyConfig, keySize int) image.Image {
+	if k == nil {
+		return blankImage(keySize, color.RGBA{0, 0, 0, 255})
+	}
+	if k.Icon == "" && k.Label == "" {
+		if k.Background != "" {
+			if bg, err := parseHexColor(k.Background); err == nil {
+				return blankImage(keySize, bg)
+			}
+		}
+		return blankImage(keySize, color.RGBA{64, 64, 64, 255})
+	}
+
+	faScale := 0.55
+	if k.IconScale != nil {
+		faScale = *k.IconScale
+	}
+
+	if k.Icon != "" {
+		img, err := loadImage(k.Icon, keySize, faScale)
+		if err != nil {
+			img = blankImage(keySize, color.RGBA{64, 64, 64, 255})
+		}
+		if k.Background != "" {
+			if bg, err := parseHexColor(k.Background); err == nil {
+				img = applyBackground(img, bg)
+			}
+		}
+		if k.Label != "" {
+			return composeImageWithLabel(img, k.Label, keySize)
+		}
+		g := gift.New(gift.Resize(keySize, keySize, gift.LanczosResampling))
+		rgba := image.NewRGBA(image.Rect(0, 0, keySize, keySize))
+		g.Draw(rgba, img)
+		return rgba
+	}
+
+	if k.Background != "" {
+		if bg, err := parseHexColor(k.Background); err == nil {
+			if k.Label != "" {
+				fontSize := 12.0
+				if k.FontSize != nil {
+					fontSize = *k.FontSize
+				}
+				return renderUnicodeText(k.Label, fontSize, keySize, bg)
+			}
+			return blankImage(keySize, bg)
+		}
+	}
+	return renderTextImage(k.Label, keySize)
+}
+
+func blankImage(size int, c color.Color) image.Image {
+	img := image.NewRGBA(image.Rect(0, 0, size, size))
+	draw.Draw(img, img.Bounds(), &image.Uniform{c}, image.Point{}, draw.Src)
+	return img
+}
+
+func composeImageWithLabel(src image.Image, text string, keySize int) image.Image {
+	g := gift.New(gift.Resize(keySize, keySize, gift.LanczosResampling))
+	rgba := image.NewRGBA(image.Rect(0, 0, keySize, keySize))
+	g.Draw(rgba, src)
+
+	barHeight := 20
+	if keySize < 72 {
+		barHeight = 18
+	}
+	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 != "" {
+		face := basicfont.Face7x13
+		textW := font.MeasureString(face, text).Ceil()
+		posX := (keySize - textW) / 2
+		if posX < 2 {
+			posX = 2
+		}
+		posY := keySize - barHeight/2 + face.Metrics().Height.Ceil()/2
+		if posY >= keySize {
+			posY = keySize - 2
+		}
+
+		d := &font.Drawer{
+			Dst:  rgba,
+			Src:  image.NewUniform(color.White),
+			Face: face,
+			Dot:  fixed.P(posX, posY),
+		}
+		d.DrawString(text)
+	}
+
+	return rgba
+}
+
+func renderTextImage(text string, keySize int) image.Image {
+	rgba := blankImage(keySize, color.RGBA{0, 0, 0, 255}).(*image.RGBA)
+
+	if text != "" {
+		face := basicfont.Face7x13
+		textW := font.MeasureString(face, text).Ceil()
+		posX := (keySize - textW) / 2
+		if posX < 2 {
+			posX = 2
+		}
+		posY := keySize/2 + face.Metrics().Height.Ceil()/2
+
+		d := &font.Drawer{
+			Dst:  rgba,
+			Src:  image.NewUniform(color.White),
+			Face: face,
+			Dot:  fixed.P(posX, posY),
+		}
+		d.DrawString(text)
+	}
+
+	return rgba
+}