move RenderStandardBox rendering to WidgetBase; Box is effectively ju…

…st an alias name now

core/box.go

@@ -8,7 +8,3 @@ package core
 type Box struct {
 	WidgetBase
 }
-
-func (bx *Box) Render() {
-	bx.RenderStandardBox()
-}

core/button.go

@@ -24,7 +24,7 @@ import (
 // and/or a menu. The standard behavior is to register a click event handler with
 // OnClick.
 type Button struct { //core:embedder
-	Box
+	WidgetBase
 
 	// Type is the type of button.
 	Type ButtonTypes
@@ -114,7 +114,7 @@ const (
 )
 
 func (bt *Button) OnInit() {
-	bt.Box.OnInit()
+	bt.WidgetBase.OnInit()
 	bt.HandleEvents()
 	bt.SetStyles()
 }

core/canvas.go

@@ -15,7 +15,7 @@ import (
 // Canvas is a widget that can be arbitrarily drawn to by setting
 // its Draw function using [Canvas.SetDraw].
 type Canvas struct {
-	Box
+	WidgetBase
 
 	// Draw is the function used to draw the content of the
 	// canvas every time that it is rendered. The paint context
@@ -28,14 +28,14 @@ type Canvas struct {
 }
 
 func (c *Canvas) OnInit() {
-	c.Box.OnInit()
+	c.WidgetBase.OnInit()
 	c.Style(func(s *styles.Style) {
 		s.Min.Set(units.Dp(256))
 	})
 }
 
 func (c *Canvas) Render() {
-	c.Box.Render()
+	c.WidgetBase.Render()
 
 	sz := c.Geom.Size.Actual.Content
 	szp := c.Geom.Size.Actual.Content.ToPoint()

core/chooser.go

@@ -29,13 +29,10 @@ import (
 	"cogentcore.org/core/units"
 )
 
-// Chooser is for selecting items from a dropdown list, with an optional
-// edit TextField for typing directly.
-// The items can be of any type, including enum values -- they are converted
-// to strings for the display.  If the items are of type [icons.Icon], then they
-// are displayed using icons instead.
+// Chooser is a drop down selection widget that allows users to choose
+// one option among a list of items.
 type Chooser struct {
-	Box
+	WidgetBase
 
 	// Type is the styling type of the chooser.
 	Type ChooserTypes
@@ -137,14 +134,15 @@ const (
 	// Chooser with a background color
 	// and a bottom border
 	ChooserFilled ChooserTypes = iota
+
 	// ChooserOutlined represents an outlined
 	// Chooser with a border on all sides
 	// and no background color
 	ChooserOutlined
 )
 
 func (ch *Chooser) OnInit() {
-	ch.Box.OnInit()
+	ch.WidgetBase.OnInit()
 	ch.HandleEvents()
 	ch.SetStyles()
 }

core/handle.go

@@ -18,7 +18,7 @@ import (
 // control the size of an element. The [Handle.Styles.Direction]
 // controls the direction in which the handle moves.
 type Handle struct {
-	Box
+	WidgetBase
 
 	// Min is the minimum value that the handle can go to
 	// (typically the lower bound of the dialog/splits)

core/image.go

@@ -21,7 +21,7 @@ import (
 // size in [units.Dp] units (1/160th of an inch). See [views.ConfigImageToolbar]
 // for a toolbar with I/O buttons.
 type Image struct {
-	Box
+	WidgetBase
 
 	// Image is the bitmap image.
 	Image *image.RGBA `xml:"-" json:"-" set:"-"`
@@ -77,7 +77,7 @@ func (im *Image) SetImage(img image.Image) *Image {
 }
 
 func (im *Image) Render() {
-	im.Box.Render()
+	im.WidgetBase.Render()
 
 	if im.Image == nil {
 		return

core/render.go

@@ -496,8 +496,11 @@ func (wb *WidgetBase) PopBounds() {
 // Render is the method that widgets should implement to define their
 // custom rendering steps. It should not be called outside of
 // [Widget.RenderWidget], which also does other steps applicable
-// for all widgets.
-func (wb *WidgetBase) Render() {}
+// for all widgets. The base [WidgetBase.Render] implementation
+// renders the standard box model.
+func (wb *WidgetBase) Render() {
+	wb.RenderStandardBox()
+}
 
 // RenderWidget renders the widget and any parts and children that it has.
 // It does not render if the widget is invisible. It calls Widget.Render]

core/separator.go

@@ -13,7 +13,7 @@ import (
 // Separator draws a separator line. It goes in the direction
 // specified by [style.Style.Direction].
 type Separator struct {
-	Box
+	WidgetBase
 }
 
 func (sp *Separator) OnInit() {

core/svg.go

@@ -26,7 +26,7 @@ import (
 // By default, it is [states.ReadOnly]. See [views.ConfigSVGToolbar] for a
 // toolbar with panning, selecting, and I/O buttons.
 type SVG struct {
-	Box
+	WidgetBase
 
 	// SVG is the SVG object associated with the element.
 	SVG *svg.SVG `set:"-"`
@@ -138,7 +138,7 @@ func (sv *SVG) SizeFinal() {
 }
 
 func (sv *SVG) Render() {
-	sv.Box.Render()
+	sv.WidgetBase.Render()
 
 	if sv.SVG == nil {
 		return

core/switch.go

@@ -19,7 +19,7 @@ import (
 // Switch is a widget that can toggle between an on and off state.
 // It can be displayed as a switch, checkbox, or radio button.
 type Switch struct {
-	Box
+	WidgetBase
 
 	// the type of switch that this is
 	Type SwitchTypes `set:"-"`
@@ -60,7 +60,7 @@ const (
 )
 
 func (sw *Switch) OnInit() {
-	sw.Box.OnInit()
+	sw.WidgetBase.OnInit()
 	sw.HandleEvents()
 	sw.SetStyles()
 }
@@ -330,5 +330,5 @@ func (sw *Switch) Render() {
 			ist.(*Layout).UpdateStackedVisibility()
 		}
 	}
-	sw.Box.Render()
+	sw.WidgetBase.Render()
 }

core/tabs.go

@@ -513,7 +513,7 @@ func (ts *Tabs) UnselectOtherTabs(idx int) {
 // Tab is a tab button that contains any, all, or none of a label, an icon,
 // and a close icon. Tabs should be made using the [Tabs.NewTab] function.
 type Tab struct { //core:no-new
-	Box
+	WidgetBase
 
 	// Type is the styling type of the tab. This property
 	// must be set on the parent [Tabs] for it to work correctly.
@@ -543,7 +543,7 @@ type Tab struct { //core:no-new
 }
 
 func (tb *Tab) OnInit() {
-	tb.Box.OnInit()
+	tb.WidgetBase.OnInit()
 	tb.HandleClickOnEnterSpace()
 	tb.SetStyles()
 }

core/widget.go

@@ -119,7 +119,8 @@ type Widget interface {
 	// Render is the method that widgets should implement to define their
 	// custom rendering steps. It should not be called outside of
 	// [Widget.RenderWidget], which also does other steps applicable
-	// for all widgets.
+	// for all widgets. The base [WidgetBase.Render] implementation
+	// renders the standard box model.
 	Render()
 
 	// RenderWidget renders the widget and any parts and children that it has.