use rounded rectangles where appropriate; switch deprecated Max to Stack layout

ui/browsing/browsingpane.go

@@ -74,7 +74,7 @@ func NewBrowsingPane(app *backend.App) *BrowsingPane {
 	b.app.PlaybackManager.OnSongChange(b.onSongChange)
 	b.app.PlaybackManager.OnPlayTimeUpdate(b.onPlayTimeUpdate)
 	bkgrnd := myTheme.NewThemedRectangle(myTheme.ColorNamePageBackground)
-	b.pageContainer = container.NewMax(bkgrnd, layout.NewSpacer())
+	b.pageContainer = container.NewStack(bkgrnd, layout.NewSpacer())
 	b.settingsBtn = widget.NewButtonWithIcon("", theme.SettingsIcon(), func() {
 		p := widget.NewPopUpMenu(b.settingsMenu,
 			fyne.CurrentApp().Driver().CanvasForObject(b.settingsBtn))

ui/dialogs/graphicequalizer.go

@@ -63,7 +63,7 @@ func (g *GraphicEqualizer) buildSliders(preamp float64, bands []string, bandGain
 		c := container.NewBorder(nil, l, nil, nil, s)
 		bandSliders.Add(c)
 	}
-	g.container = container.NewMax(
+	g.container = container.NewStack(
 		container.NewBorder(nil, widget.NewLabel(""), nil, nil,
 			container.NewBorder(nil, nil, util.NewHSpace(5), util.NewHSpace(5),
 				container.NewVBox(

ui/theme/themedrectangle.go

@@ -15,10 +15,11 @@ type ThemedRectangle struct {
 
 	rect *canvas.Rectangle
 
-	ColorName       fyne.ThemeColorName
+	ColorName        fyne.ThemeColorName
-	Translucent     bool
+	Translucent      bool
-	BorderWidth     float32
+	BorderWidth      float32
-	BorderColorName fyne.ThemeColorName
+	BorderColorName  fyne.ThemeColorName
+	CornerRadiusName fyne.ThemeSizeName
 }
 
 func NewThemedRectangle(colorName fyne.ThemeColorName) *ThemedRectangle {
@@ -42,6 +43,9 @@ func (t *ThemedRectangle) Refresh() {
 	t.rect.FillColor = fc
 	t.rect.StrokeWidth = t.BorderWidth
 	t.rect.StrokeColor = theme.Color(t.BorderColorName, settings.ThemeVariant())
+	if t.CornerRadiusName != "" {
+		t.rect.CornerRadius = theme.Size(t.CornerRadiusName)
+	}
 	t.BaseWidget.Refresh()
 }
 

ui/widgets/gridviewitem.go

@@ -50,7 +50,7 @@ func newCoverImage(placeholderResource fyne.Resource) *coverImage {
 
 func (c *coverImage) CreateRenderer() fyne.WidgetRenderer {
 	return widget.NewSimpleRenderer(
-		container.NewMax(c.Im, container.NewCenter(c.playbtn)),
+		container.NewStack(c.Im, container.NewCenter(c.playbtn)),
 	)
 }
 

ui/widgets/imageplaceholder.go

@@ -43,7 +43,7 @@ func NewImagePlaceholder(centerIcon fyne.Resource, minSize float32) *ImagePlaceh
 	i.border = myTheme.NewThemedRectangle(theme.ColorNameBackground)
 	i.border.BorderColorName = theme.ColorNameForeground
 	i.border.BorderWidth = 3
-	i.content = container.NewMax(
+	i.content = container.NewStack(
 		i.border,
 		container.NewCenter(i.iconImage),
 		i.imageDisp,

ui/widgets/listheader.go

@@ -63,7 +63,9 @@ func NewListHeader(cols []ListColumn, layout *layouts.ColumnsLayout) *ListHeader
 	for i := range l.columnVisible {
 		l.columnVisible[i] = true
 	}
-	l.container = container.NewMax(myTheme.NewThemedRectangle(myTheme.ColorNameListHeader), l.columnsContainer)
+	rect := myTheme.NewThemedRectangle(myTheme.ColorNameListHeader)
+	rect.CornerRadiusName = theme.SizeNameSelectionRadius
+	l.container = container.NewStack(rect, l.columnsContainer)
 	l.ExtendBaseWidget(l)
 	l.buildColumns()
 	return l
@@ -187,7 +189,7 @@ func newColHeader(columnCfg ListColumn, sortDisabled *bool) *colHeader {
 	}
 	r := myTheme.NewThemedRectangle(myTheme.ColorNameListHeader)
 	r.Translucent = true
-	c.sortIconContainer = container.NewMax(widget.NewIcon(theme.MenuDropDownIcon()), r)
+	c.sortIconContainer = container.NewStack(widget.NewIcon(theme.MenuDropDownIcon()), r)
 	// hack to remove extra icon space
 	// should be hidden whenever sortIcon is hidden
 	c.sortIconNegSpacer = util.NewHSpace(0)

ui/widgets/listrowbase.go

@@ -85,13 +85,15 @@ func (l *ListRowBase) Refresh() {
 func (l *ListRowBase) CreateRenderer() fyne.WidgetRenderer {
 	if l.selectionRect == nil {
 		l.selectionRect = canvas.NewRectangle(theme.SelectionColor())
+		l.selectionRect.CornerRadius = theme.SelectionRadiusSize()
 		l.selectionRect.Hidden = !l.Selected
 	}
 	if l.focusedRect == nil {
 		l.focusedRect = canvas.NewRectangle(theme.HoverColor())
+		l.focusedRect.CornerRadius = theme.SelectionRadiusSize()
 		l.focusedRect.Hidden = !l.Focused
 	}
 	return widget.NewSimpleRenderer(
-		container.NewMax(l.selectionRect, l.focusedRect, l.Content),
+		container.NewStack(l.selectionRect, l.focusedRect, l.Content),
 	)
 }