beginning work on browse by favorite artists and songs

ui/layouts/hboxcustompadding.go

@@ -0,0 +1,58 @@
+package layouts
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/theme"
+)
+
+var _ fyne.Layout = (*VboxCustomPadding)(nil)
+
+type HboxCustomPadding struct {
+	ExtraPad        float32
+	DisableThemePad bool
+}
+
+func (v *HboxCustomPadding) MinSize(objects []fyne.CanvasObject) fyne.Size {
+	minSize := fyne.NewSize(0, 0)
+	for _, child := range objects {
+		if !child.Visible() {
+			continue
+		}
+
+		minSize.Height = fyne.Max(child.MinSize().Height, minSize.Height)
+		minSize.Width += child.MinSize().Width
+	}
+	minSize.Width += (v.themePad() + v.ExtraPad) * float32(len(objects)-1)
+	return minSize
+}
+
+func (v *HboxCustomPadding) Layout(objects []fyne.CanvasObject, size fyne.Size) {
+	total := float32(0)
+	for _, child := range objects {
+		if !child.Visible() {
+			continue
+		}
+		total += child.MinSize().Width
+	}
+
+	x, y := float32(0), float32(0)
+
+	extra := float32(0)
+	for _, child := range objects {
+		if !child.Visible() {
+			continue
+		}
+		width := child.MinSize().Width
+		child.Move(fyne.NewPos(x+extra, y))
+		x += width
+		child.Resize(fyne.NewSize(width, size.Height))
+		extra += (v.themePad() + v.ExtraPad)
+	}
+}
+
+func (v *HboxCustomPadding) themePad() float32 {
+	if v.DisableThemePad {
+		return 0
+	}
+	return theme.Padding()
+}