WIP Labels

doodle.go

@@ -63,7 +63,8 @@ func (d *Doodle) Run() error {
 
 	// Set up the default scene.
 	if d.Scene == nil {
-		d.Goto(&MainScene{})
+		d.Goto(&GUITestScene{})
+		// d.Goto(&MainScene{})
 	}
 
 	log.Info("Enter Main Loop")

guitest_scene.go

@@ -0,0 +1,159 @@
+package doodle
+
+import (
+	"git.kirsle.net/apps/doodle/events"
+	"git.kirsle.net/apps/doodle/render"
+	"git.kirsle.net/apps/doodle/ui"
+)
+
+// GUITestScene implements the main menu of Doodle.
+type GUITestScene struct {
+	Supervisor *ui.Supervisor
+	frame      *ui.Frame
+	window     *ui.Frame
+}
+
+// Name of the scene.
+func (s *GUITestScene) Name() string {
+	return "Main"
+}
+
+// Setup the scene.
+func (s *GUITestScene) Setup(d *Doodle) error {
+	s.Supervisor = ui.NewSupervisor()
+
+	window := ui.NewFrame()
+	s.window = window
+	window.Configure(ui.Config{
+		Width:       400,
+		Height:      400,
+		Background:  render.Grey,
+		BorderStyle: ui.BorderRaised,
+		BorderSize:  2,
+	})
+
+	titleBar := ui.NewLabel(render.Text{
+		Text:   "Alert",
+		Size:   12,
+		Color:  render.White,
+		Stroke: render.Black,
+	})
+	titleBar.Configure(ui.Config{
+		Background:   render.Blue,
+		OutlineSize:  1,
+		OutlineColor: render.Black,
+	})
+	window.Pack(titleBar, ui.Pack{
+		Anchor: ui.N,
+		FillX:  true,
+	})
+
+	msgFrame := ui.NewFrame()
+	msgFrame.Configure(ui.Config{
+		Background:  render.Grey,
+		BorderStyle: ui.BorderRaised,
+		BorderSize:  1,
+	})
+	window.Pack(msgFrame, ui.Pack{
+		Anchor:  ui.N,
+		Fill:    true,
+		Padding: 4,
+	})
+
+	btnFrame := ui.NewFrame()
+	btnFrame.Configure(ui.Config{
+		Background: render.DarkRed,
+	})
+	window.Pack(btnFrame, ui.Pack{
+		Anchor:  ui.N,
+		Padding: 4,
+	})
+
+	msg := ui.NewLabel(render.Text{
+		Text:  "Hello World!",
+		Size:  14,
+		Color: render.Black,
+	})
+	msgFrame.Pack(msg, ui.Pack{
+		Anchor:  ui.NW,
+		Padding: 2,
+	})
+
+	button1 := ui.NewButton(*ui.NewLabel(render.Text{
+		Text:  "New Map",
+		Size:  14,
+		Color: render.Black,
+	}))
+	button1.SetBackground(render.Blue)
+	button1.Handle("Click", func(p render.Point) {
+		d.NewMap()
+	})
+
+	log.Info("Button1 bg: %s", button1.Background())
+
+	button2 := ui.NewButton(*ui.NewLabel(render.Text{
+		Text:  "New Map",
+		Size:  14,
+		Color: render.Black,
+	}))
+	button2.SetText("Load Map")
+
+	var align = ui.W
+	btnFrame.Pack(button1, ui.Pack{
+		Anchor:  align,
+		Padding: 20,
+		Fill:    true,
+	})
+	btnFrame.Pack(button2, ui.Pack{
+		Anchor:  align,
+		Padding: 20,
+		Fill:    true,
+	})
+
+	s.Supervisor.Add(button1)
+	s.Supervisor.Add(button2)
+
+	return nil
+}
+
+// Loop the editor scene.
+func (s *GUITestScene) Loop(d *Doodle, ev *events.State) error {
+	s.Supervisor.Loop(ev)
+	return nil
+}
+
+// Draw the pixels on this frame.
+func (s *GUITestScene) Draw(d *Doodle) error {
+	// Clear the canvas and fill it with white.
+	d.Engine.Clear(render.White)
+
+	label := ui.NewLabel(render.Text{
+		Text:   "GUITest Doodle v" + Version,
+		Size:   26,
+		Color:  render.Pink,
+		Stroke: render.SkyBlue,
+		Shadow: render.Black,
+	})
+	label.Compute(d.Engine)
+	label.MoveTo(render.Point{
+		X: (d.width / 2) - (label.Size().W / 2),
+		Y: 40,
+	})
+	label.Present(d.Engine)
+
+	s.window.Compute(d.Engine)
+	s.window.MoveTo(render.Point{
+		X: (d.width / 2) - (s.window.Size().W / 2),
+		Y: 100,
+	})
+	s.window.Present(d.Engine)
+
+	s.Supervisor.Present(d.Engine)
+
+	return nil
+}
+
+// Destroy the scene.
+func (s *GUITestScene) Destroy() error {
+	return nil
+}

main_scene.go

@@ -9,6 +9,7 @@ import (
 // MainScene implements the main menu of Doodle.
 type MainScene struct {
 	Supervisor *ui.Supervisor
+	frame      *ui.Frame
 }
 
 // Name of the scene.
@@ -20,16 +21,27 @@ func (s *MainScene) Name() string {
 func (s *MainScene) Setup(d *Doodle) error {
 	s.Supervisor = ui.NewSupervisor()
 
+	frame := ui.NewFrame()
+	s.frame = frame
+	s.frame.Configure(ui.Config{
+		// Width:       400,
+		// Height:      200,
+		Background:  render.Purple,
+		BorderStyle: ui.BorderSolid,
+		BorderSize:  1,
+		BorderColor: render.Blue,
+	})
+
 	button1 := ui.NewButton(*ui.NewLabel(render.Text{
 		Text:  "New Map",
 		Size:  14,
 		Color: render.Black,
 	}))
-	button1.Compute(d.Engine)
+	// button1.Compute(d.Engine)
-	button1.MoveTo(render.Point{
+	// button1.MoveTo(render.Point{
-		X: (d.width / 2) - (button1.Size().W / 2),
+	// 	X: (d.width / 2) - (button1.Size().W / 2),
-		Y: 200,
+	// 	Y: 200,
-	})
+	// })
 	button1.Handle("Click", func(p render.Point) {
 		d.NewMap()
 	})
@@ -40,10 +52,22 @@ func (s *MainScene) Setup(d *Doodle) error {
 		Color: render.Black,
 	}))
 	button2.SetText("Load Map")
-	button2.Compute(d.Engine)
+	// button2.Compute(d.Engine)
-	button2.MoveTo(render.Point{
+	// button2.MoveTo(render.Point{
-		X: (d.width / 2) - (button2.Size().W / 2),
+	// 	X: (d.width / 2) - (button2.Size().W / 2),
-		Y: 260,
+	// 	Y: 260,
+	// })
+
+	var align = ui.E
+	frame.Pack(button1, ui.Pack{
+		Anchor:  align,
+		Padding: 12,
+		Fill:    true,
+	})
+	frame.Pack(button2, ui.Pack{
+		Anchor:  align,
+		Padding: 12,
+		Fill:    true,
 	})
 
 	s.Supervisor.Add(button1)
@@ -77,6 +101,13 @@ func (s *MainScene) Draw(d *Doodle) error {
 	})
 	label.Present(d.Engine)
 
+	s.frame.Compute(d.Engine)
+	s.frame.MoveTo(render.Point{
+		X: (d.width / 2) - (s.frame.Size().W / 2),
+		Y: 200,
+	})
+	s.frame.Present(d.Engine)
+
 	s.Supervisor.Present(d.Engine)
 
 	return nil

render/interface.go

@@ -89,6 +89,16 @@ func (c Color) Add(r, g, b, a int32) Color {
 	}
 }
 
+// Lighten a color value.
+func (c Color) Lighten(v int32) Color {
+	return c.Add(v, v, v, 0)
+}
+
+// Darken a color value.
+func (c Color) Darken(v int32) Color {
+	return c.Add(-v, -v, -v, 0)
+}
+
 // Point holds an X,Y coordinate value.
 type Point struct {
 	X int32

ui/button.go

@@ -1,6 +1,8 @@
 package ui
 
 import (
+	"fmt"
+
 	"git.kirsle.net/apps/doodle/render"
 	"git.kirsle.net/apps/doodle/ui/theme"
 )
@@ -21,12 +23,14 @@ func NewButton(label Label) *Button {
 		Label: label,
 	}
 
-	w.SetPadding(4)
+	w.Configure(Config{
-	w.SetBorderSize(2)
+		Padding:      4,
-	w.SetBorderStyle(BorderRaised)
+		BorderSize:   2,
-	w.SetOutlineSize(1)
+		BorderStyle:  BorderRaised,
-	w.SetOutlineColor(theme.ButtonOutlineColor)
+		OutlineSize:  1,
-	w.SetBackground(theme.ButtonBackgroundColor)
+		OutlineColor: theme.ButtonOutlineColor,
+		Background:   theme.ButtonBackgroundColor,
+	})
 
 	w.Handle("MouseOver", func(p render.Point) {
 		w.hovering = true
@@ -46,6 +50,10 @@ func NewButton(label Label) *Button {
 		w.SetBorderStyle(BorderRaised)
 	})
 
+	w.IDFunc(func() string {
+		return fmt.Sprintf("Button<%s>", w.Label.Text.Text)
+	})
+
 	return w
 }
 

ui/frame.go

@@ -0,0 +1,325 @@
+package ui
+
+import (
+	"fmt"
+	"time"
+
+	"git.kirsle.net/apps/doodle/render"
+)
+
+// Frame is a widget that contains other widgets.
+type Frame struct {
+	BaseWidget
+	packs   map[Anchor][]packedWidget
+	widgets []Widget
+}
+
+// NewFrame creates a new Frame.
+func NewFrame() *Frame {
+	return &Frame{
+		packs:   map[Anchor][]packedWidget{},
+		widgets: []Widget{},
+	}
+}
+
+func (w *Frame) String() string {
+	return fmt.Sprintf("Frame<%d widgets>",
+		len(w.widgets),
+	)
+}
+
+// Compute the size of the Frame.
+func (w *Frame) Compute(e render.Engine) {
+	var (
+		frameSize = w.Size()
+		maxWidth  int32
+		maxHeight int32
+		visited   = []packedWidget{}
+	)
+
+	// Initialize the dimensions?
+	if w.FixedSize() {
+		maxWidth = frameSize.W
+		maxHeight = frameSize.H
+	}
+
+	for anchor := AnchorMin; anchor <= AnchorMax; anchor++ {
+		if _, ok := w.packs[anchor]; !ok {
+			continue
+		}
+
+		var (
+			x          int32
+			y          int32
+			yDirection int32 = 1
+			xDirection int32 = 1
+		)
+
+		if anchor.IsSouth() {
+			y = frameSize.H
+			yDirection = -1 - w.BoxThickness(1)
+		} else if anchor == E {
+			x = frameSize.W
+			xDirection = -1
+		}
+
+		for _, packedWidget := range w.packs[anchor] {
+			child := packedWidget.widget
+			pack := packedWidget.pack
+			child.Compute(e)
+			var (
+				// point = child.Point()
+				size  = child.Size()
+				yStep = y * yDirection
+				xStep = x * xDirection
+			)
+
+			if !w.FixedSize() {
+				log.Warn("not fixed")
+				if xStep+size.W+(pack.PadX*2) > maxWidth {
+					var old = maxWidth
+					maxWidth = xStep + size.W + (pack.PadX * 2)
+					log.Error("%s %s Upgrading maxWidth %d -> %d  (size %s) xstep %d",
+						w,
+						child,
+						old,
+						maxWidth,
+						size,
+						xStep,
+					)
+					time.Sleep(5)
+				}
+				if yStep+size.H+(pack.PadY*2) > maxHeight {
+					maxHeight = yStep + size.H + (pack.PadY * 2)
+				}
+			}
+
+			if anchor.IsSouth() {
+				y -= size.H + (pack.PadY * 2)
+			}
+			if anchor.IsEast() {
+				x -= size.W + (pack.PadX * 2)
+			}
+
+			child.MoveTo(render.Point{
+				X: x + pack.PadX,
+				Y: y + pack.PadY,
+			})
+
+			if anchor.IsNorth() {
+				y += size.H + (pack.PadY * 2)
+			}
+			if anchor == W {
+				x += size.W + (pack.PadX * 2)
+			}
+
+			visited = append(visited, packedWidget)
+		}
+	}
+
+	// Rescan all the widgets in this anchor to re-center them
+	// in their space.
+	for _, pw := range visited {
+		var (
+			child   = pw.widget
+			pack    = pw.pack
+			point   = child.Point()
+			size    = child.Size()
+			resized bool
+			moved   bool
+		)
+
+		if pack.Anchor.IsNorth() || pack.Anchor.IsSouth() {
+			if pack.FillX && size.W < maxWidth {
+				size.W = maxWidth - w.BoxThickness(2)
+				resized = true
+			}
+			if size.W < maxWidth {
+				if pack.Anchor.IsCenter() {
+					point.X = (maxWidth / 2) - (size.W / 2)
+				} else if pack.Anchor.IsWest() {
+					point.X = pack.PadX
+				} else if pack.Anchor.IsEast() {
+					point.X = maxWidth - size.W - pack.PadX
+				}
+
+				moved = true
+			}
+		} else if pack.Anchor.IsWest() || pack.Anchor.IsEast() {
+			if pack.FillY && size.H < maxHeight {
+				size.H = maxHeight - w.BoxThickness(2)
+				resized = true
+			}
+			if size.H < maxHeight {
+				if pack.Anchor.IsMiddle() {
+					point.Y = (maxHeight / 2) - (size.H / 2)
+				} else if pack.Anchor.IsNorth() {
+					point.Y = pack.PadY
+				} else if pack.Anchor.IsSouth() {
+					point.Y = maxHeight - size.H - pack.PadY
+				}
+				moved = true
+			}
+		} else {
+			log.Error("unsupported pack.Anchor")
+		}
+
+		if resized {
+			child.Resize(size)
+		}
+		if moved {
+			child.MoveTo(point)
+		}
+	}
+
+	if !w.FixedSize() {
+		w.Resize(render.Rect{
+			W: maxWidth + w.BoxThickness(2),
+			H: maxHeight + w.BoxThickness(2),
+		})
+	}
+}
+
+// Present the Frame.
+func (w *Frame) Present(e render.Engine) {
+	var (
+		P = w.Point()
+		S = w.Size()
+	)
+
+	// Draw the widget's border and everything.
+	w.DrawBox(e)
+
+	// Draw the background color.
+	e.DrawBox(w.Background(), render.Rect{
+		X: P.X + w.BoxThickness(1),
+		Y: P.Y + w.BoxThickness(1),
+		W: S.W - w.BoxThickness(2),
+		H: S.H - w.BoxThickness(2),
+	})
+
+	// Draw the widgets.
+	for _, child := range w.widgets {
+		p := child.Point()
+		child.MoveTo(render.NewPoint(
+			P.X+p.X+w.BoxThickness(1),
+			P.Y+p.Y+w.BoxThickness(1),
+		))
+		child.Present(e)
+	}
+}
+
+// Pack provides configuration fields for Frame.Pack().
+type Pack struct {
+	// Side of the parent to anchor the position to, like N, SE, W. Default
+	// is Center.
+	Anchor Anchor
+
+	// If the widget is smaller than its allocated space, grow the widget
+	// to fill its space in the Frame.
+	Fill  bool
+	FillX bool
+	FillY bool
+
+	Padding int32 // Equal padding on X and Y.
+	PadX    int32
+	PadY    int32
+	// Expand bool // Widget should grow to fill any remaining space.
+}
+
+// Anchor is a cardinal direction.
+type Anchor uint8
+
+// Anchor values.
+const (
+	Center Anchor = iota
+	N
+	NE
+	E
+	SE
+	S
+	SW
+	W
+	NW
+)
+
+// Range of Anchor values.
+const (
+	AnchorMin = Center
+	AnchorMax = NW
+)
+
+// IsNorth returns if the anchor is N, NE or NW.
+func (a Anchor) IsNorth() bool {
+	return a == N || a == NE || a == NW
+}
+
+// IsSouth returns if the anchor is S, SE or SW.
+func (a Anchor) IsSouth() bool {
+	return a == S || a == SE || a == SW
+}
+
+// IsEast returns if the anchor is E, NE or SE.
+func (a Anchor) IsEast() bool {
+	return a == E || a == NE || a == SE
+}
+
+// IsWest returns if the anchor is W, NW or SW.
+func (a Anchor) IsWest() bool {
+	return a == W || a == NW || a == SW
+}
+
+// IsCenter returns if the anchor is Center, N or S, to determine
+// whether to align text as centered for North/South anchors.
+func (a Anchor) IsCenter() bool {
+	return a == Center || a == N || a == S
+}
+
+// IsMiddle returns if the anchor is Center, E or W, to determine
+// whether to align text as middled for East/West anchors.
+func (a Anchor) IsMiddle() bool {
+	return a == Center || a == W || a == E
+}
+
+// Pack a widget along a side of the frame.
+func (w *Frame) Pack(child Widget, config ...Pack) {
+	var C Pack
+	if len(config) > 0 {
+		C = config[0]
+	}
+
+	// Initialize the pack list for this anchor?
+	if _, ok := w.packs[C.Anchor]; !ok {
+		w.packs[C.Anchor] = []packedWidget{}
+	}
+
+	// Padding: if the user only provided Padding add it to both
+	// the X and Y value. If the user additionally provided the X
+	// and Y value, it will add to the base padding as you'd expect.
+	C.PadX += C.Padding
+	C.PadY += C.Padding
+
+	w.packs[C.Anchor] = append(w.packs[C.Anchor], packedWidget{
+		widget: child,
+		pack:   C,
+	})
+	w.widgets = append(w.widgets, child)
+}
+
+type packLayout struct {
+	widgets []packedWidget
+}
+
+type packedWidget struct {
+	widget Widget
+	pack   Pack
+	fill   uint8
+}
+
+// packedWidget.fill values
+const (
+	fillNone uint8 = iota
+	fillX
+	fillY
+	fillBoth
+)

ui/label.go

@@ -1,6 +1,10 @@
 package ui
 
-import "git.kirsle.net/apps/doodle/render"
+import (
+	"fmt"
+
+	"git.kirsle.net/apps/doodle/render"
+)
 
 // Label is a simple text label widget.
 type Label struct {
@@ -12,20 +16,40 @@ type Label struct {
 
 // NewLabel creates a new label.
 func NewLabel(t render.Text) *Label {
-	return &Label{
+	w := &Label{
 		Text: t,
 	}
+	w.Configure(Config{
+		Padding: 4,
+	})
+	w.IDFunc(func() string {
+		return fmt.Sprintf("Label<%s>", w.Text.Text)
+	})
+	return w
 }
 
 // Compute the size of the label widget.
 func (w *Label) Compute(e render.Engine) {
-	rect, err := e.ComputeTextRect(w.Text)
+	rect, _ := e.ComputeTextRect(w.Text)
-	w.Resize(rect)
+	w.Resize(render.Rect{
-	_ = rect
+		W: rect.W + w.Padding(),
-	_ = err
+		H: rect.H + w.Padding(),
+	})
+	w.MoveTo(render.Point{
+		X: rect.X + w.BoxThickness(1),
+		Y: rect.Y + w.BoxThickness(1),
+	})
 }
 
 // Present the label widget.
 func (w *Label) Present(e render.Engine) {
-	e.DrawText(w.Text, w.Point())
+	var (
+		P      = w.Point()
+		border = w.BoxThickness(1)
+	)
+	w.DrawBox(e)
+	e.DrawText(w.Text, render.Point{
+		X: P.X + border,
+		Y: P.Y + border,
+	})
 }

ui/log.go

@@ -0,0 +1,14 @@
+package ui
+
+import "github.com/kirsle/golog"
+
+var log *golog.Logger
+
+func init() {
+	log = golog.GetLogger("ui")
+	log.Configure(&golog.Config{
+		Level:  golog.DebugLevel,
+		Theme:  golog.DarkTheme,
+		Colors: golog.ExtendedColor,
+	})
+}

ui/supervisor.go

@@ -84,7 +84,8 @@ func (s *Supervisor) Present(e render.Engine) {
 	defer s.lock.RUnlock()
 
 	for _, w := range s.widgets {
-		w.Present(e)
+		// w.Present(e)
+		_ = w
 	}
 }
 

ui/theme/theme.go

@@ -7,4 +7,6 @@ var (
 	ButtonBackgroundColor = render.RGBA(200, 200, 200, 255)
 	ButtonHoverColor      = render.RGBA(200, 255, 255, 255)
 	ButtonOutlineColor    = render.Black
+
+	BorderColorOffset int32 = 40
 )

ui/widget.go

@@ -2,6 +2,7 @@ package ui
 
 import (
 	"git.kirsle.net/apps/doodle/render"
+	"git.kirsle.net/apps/doodle/ui/theme"
 )
 
 // BorderStyle options for widget.SetBorderStyle()
@@ -16,10 +17,14 @@ const (
 
 // Widget is a user interface element.
 type Widget interface {
+	ID() string           // Get the widget's string ID.
+	IDFunc(func() string) // Set a function that returns the widget's ID.
+	String() string
 	Point() render.Point
 	MoveTo(render.Point)
 	MoveBy(render.Point)
 	Size() render.Rect // Return the Width and Height of the widget.
+	FixedSize() bool   // Return whether the size is fixed (true) or automatic (false)
 	Resize(render.Rect)
 
 	Handle(string, func(render.Point))
@@ -56,9 +61,34 @@ type Widget interface {
 	Present(render.Engine)
 }
 
+// Config holds common base widget configs for quick configuration.
+type Config struct {
+	// Size management. If you provide a non-zero value for Width and Height,
+	// the widget will be resized and the "fixedSize" flag is set, meaning it
+	// will not re-compute its size dynamically. To set the size while also
+	// keeping the auto-resize property, pass AutoResize=true too. This is
+	// mainly used internally when widgets are calculating their automatic sizes.
+	AutoResize   bool
+	Width        int32
+	Height       int32
+	Padding      int32
+	PadX         int32
+	PadY         int32
+	Background   render.Color
+	Foreground   render.Color
+	BorderSize   int32
+	BorderStyle  BorderStyle
+	BorderColor  render.Color
+	OutlineSize  int32
+	OutlineColor render.Color
+}
+
 // BaseWidget holds common functionality for all widgets, such as managing
 // their widths and heights.
 type BaseWidget struct {
+	id           string
+	idFunc       func() string
+	fixedSize    bool
 	width        int32
 	height       int32
 	point        render.Point
@@ -73,6 +103,66 @@ type BaseWidget struct {
 	handlers     map[string][]func(render.Point)
 }
 
+// SetID sets a string name for your widget, helpful for debugging purposes.
+func (w *BaseWidget) SetID(id string) {
+	w.id = id
+}
+
+// ID returns the ID that the widget calls itself by.
+func (w *BaseWidget) ID() string {
+	if w.idFunc == nil {
+		w.IDFunc(func() string {
+			return "Widget<Untitled>"
+		})
+	}
+	return w.idFunc()
+}
+
+// IDFunc sets an ID function.
+func (w *BaseWidget) IDFunc(fn func() string) {
+	w.idFunc = fn
+}
+
+func (w *BaseWidget) String() string {
+	return w.ID()
+}
+
+// Configure the base widget with all the common properties at once. Any
+// property left as the zero value will not update the widget.
+func (w *BaseWidget) Configure(c Config) {
+	if c.Width != 0 && c.Height != 0 {
+		w.fixedSize = !c.AutoResize
+		w.width = c.Width
+		w.height = c.Height
+	}
+
+	if c.Padding != 0 {
+		w.padding = c.Padding
+	}
+	if c.Background != render.Invisible {
+		w.background = c.Background
+	}
+	if c.Foreground != render.Invisible {
+		w.foreground = c.Foreground
+	}
+	if c.BorderColor != render.Invisible {
+		w.borderColor = c.BorderColor
+	}
+	if c.OutlineColor != render.Invisible {
+		w.outlineColor = c.OutlineColor
+	}
+
+	if c.BorderSize != 0 {
+		w.borderSize = c.BorderSize
+	}
+	if c.BorderStyle != BorderSolid {
+		w.borderStyle = c.BorderStyle
+	}
+	if c.OutlineSize != 0 {
+		w.outlineSize = c.OutlineSize
+	}
+}
+
 // Point returns the X,Y position of the widget on the window.
 func (w *BaseWidget) Point() render.Point {
 	return w.point
@@ -98,8 +188,21 @@ func (w *BaseWidget) Size() render.Rect {
 	}
 }
 
+// FixedSize returns whether the widget's size has been hard-coded by the user
+// (true) or if it automatically resizes based on its contents (false).
+func (w *BaseWidget) FixedSize() bool {
+	return w.fixedSize
+}
+
 // Resize sets the size of the widget to the .W and .H attributes of a rect.
 func (w *BaseWidget) Resize(v render.Rect) {
+	w.fixedSize = true
+	w.width = v.W
+	w.height = v.H
+}
+
+// resizeAuto sets the size of the widget but doesn't set the fixedSize flag.
+func (w *BaseWidget) resizeAuto(v render.Rect) {
 	w.width = v.W
 	w.height = v.H
 }
@@ -121,8 +224,8 @@ func (w *BaseWidget) DrawBox(e render.Engine) {
 		outline     = w.OutlineSize()
 		border      = w.BorderSize()
 		borderColor = w.BorderColor()
-		highlight   = borderColor.Add(20, 20, 20, 0)
+		highlight   = borderColor.Lighten(theme.BorderColorOffset)
-		shadow      = borderColor.Add(-20, -20, -20, 0)
+		shadow      = borderColor.Darken(theme.BorderColorOffset)
 		color       render.Color
 		box         = render.Rect{
 			X: P.X,
@@ -132,46 +235,67 @@ func (w *BaseWidget) DrawBox(e render.Engine) {
 		}
 	)
 
+	if borderColor == render.Invisible {
+		borderColor = render.Red
+	}
+
 	// Draw the outline layer as the full size of the widget.
-	e.DrawBox(w.OutlineColor(), render.Rect{
+	if outline > 0 && w.OutlineColor() != render.Invisible {
-		X: P.X - outline,
+		e.DrawBox(w.OutlineColor(), render.Rect{
-		Y: P.Y - outline,
+			X: P.X,
-		W: S.W + (outline * 2),
+			Y: P.Y,
-		H: S.H + (outline * 2),
+			W: S.W,
-	})
+			H: S.H,
+		})
+	}
+	box.X += outline
+	box.Y += outline
+	box.W -= outline * 2
+	box.H -= outline * 2
 
 	// Highlight on the top left edge.
-	if w.BorderStyle() == BorderRaised {
+	if border > 0 {
-		color = highlight
+		if w.BorderStyle() == BorderRaised {
-	} else if w.BorderStyle() == BorderSunken {
+			color = highlight
-		color = shadow
+		} else if w.BorderStyle() == BorderSunken {
-	} else {
+			color = shadow
-		color = borderColor
+		} else {
+			color = borderColor
+		}
+		e.DrawBox(color, box)
 	}
-	e.DrawBox(color, box)
-	box.W = S.W
 
 	// Shadow on the bottom right edge.
 	box.X += border
 	box.Y += border
 	box.W -= border
 	box.H -= border
-	if w.BorderStyle() == BorderRaised {
+	if w.BorderSize() > 0 {
-		color = shadow
+		if w.BorderStyle() == BorderRaised {
-	} else if w.BorderStyle() == BorderSunken {
+			color = shadow
-		color = highlight
+		} else if w.BorderStyle() == BorderSunken {
-	} else {
+			color = highlight
-		color = borderColor
+		} else {
+			color = borderColor
+		}
+		e.DrawBox(color, box)
 	}
-	e.DrawBox(color.Add(-20, -20, -20, 0), box)
 
 	// Background color of the button.
 	box.W -= border
 	box.H -= border
-	// if w.hovering {
+	if w.Background() != render.Invisible {
-	// 	e.DrawBox(render.Yellow, box)
+		e.DrawBox(w.Background(), box)
-	// } else {
+	}
-	e.DrawBox(color, box)
+
+	// log.Info("Widget %s background color: %s", w, w.Background())
+
+	// XXX: color effective area
+	// box.X += w.Padding()
+	// box.Y += w.Padding()
+	// box.W -= w.Padding() * 2
+	// box.H -= w.Padding() * 2
+	// e.DrawBox(render.RGBA(0, 255, 255, 153), box)
 }
 
 // Padding returns the padding width.