WIP icon loading

icons.go

@@ -0,0 +1,55 @@
+package aluminum
+
+import "os"
+import "fs"
+import "fmt"
+import "image"
+import "image/png"
+import "git.tebibyte.media/tomo/tomo/data"
+import "git.tebibyte.media/tomo/tomo/theme"
+import "git.tebibyte.media/tomo/tomo/input"
+import "git.tebibyte.media/tomo/tomo/canvas"
+
+type iconSet struct {
+	fs fs.FS
+	icons: map[theme.IconSize] map[string] canvas.Texture
+}
+
+func (this *iconSet) get (size theme.IconSize, name string) canvas.Texture {
+	texture := this.icons[size][name]
+	if texture != nil {
+		return texture
+	} else {
+		texture = nil
+		defer func () { this.icons[size][name] = texture } ()
+
+		file, err := this.fs.Open(fmt.Sprint(size, "/", name, ".png"))
+		if err != nil { return nil }
+		defer file.Close()
+		image, _, err := image.Decode(file)
+		if err != nil { return nil }
+		texture = tomo.NewTexture(image)
+	}
+}
+
+func (this *iconSet) Icon (id theme.Icon, size theme.IconSize) canvas.Texture {
+	return this.get(size, fmt.Sprint("actions/", id))
+}
+
+func (this *iconSet) MimeIcon (mime data.Mime, size theme.IconSize) canvas.Texture {
+	texture := this.get(size, fmt.Sprint("mime/", mime))
+	if texture != nil {
+		return texture
+	} else {
+		return this.get(size, fmt.Sprint("mime-generic/", mime.Type))
+	}
+}
+
+func (this *iconSet) ApplicationIcon (id theme.ApplicationIcon, size theme.IconSize) canvas.Texture {
+	texture := this.get(size, fmt.Sprint("app/", id.Name))
+	if texture != nil {
+		return texture
+	} else {
+		return this.get(size, fmt.Sprint("app-generic/", app.Role))
+	}
+}