Add Sprite

button.go

@@ -151,11 +151,11 @@ func (b *Button) SetHorizontal(h Alignment) {
 }
 
 // SetVertical sets the vertical alignment of the button label.
-func (b *Button) SetVertical(h Alignment) {
+func (b *Button) SetVertical(v Alignment) {
 	b.Lock()
 	defer b.Unlock()
 
-	b.field.SetVertical(messeji.Alignment(h))
+	b.field.SetVertical(messeji.Alignment(v))
 }
 
 // Cursor returns the cursor shape shown when a mouse cursor hovers over the

go.mod

@@ -5,7 +5,7 @@ go 1.22.0
 toolchain go1.23.0
 
 require (
-	github.com/hajimehoshi/ebiten/v2 v2.7.9
+	github.com/hajimehoshi/ebiten/v2 v2.7.10
 	github.com/llgcode/draw2d v0.0.0-20240627062922-0ed1ff131195
 	golang.org/x/image v0.20.0
 )

go.sum

@@ -8,8 +8,8 @@ github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF0
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
 github.com/hajimehoshi/bitmapfont/v3 v3.0.0 h1:r2+6gYK38nfztS/et50gHAswb9hXgxXECYgE8Nczmi4=
 github.com/hajimehoshi/bitmapfont/v3 v3.0.0/go.mod h1:+CxxG+uMmgU4mI2poq944i3uZ6UYFfAkj9V6WqmuvZA=
-github.com/hajimehoshi/ebiten/v2 v2.7.9 h1:DYH/usAa9dMHcGkBIIEApJsVqDekrJBxYHmsBuly8Iw=
-github.com/hajimehoshi/ebiten/v2 v2.7.9/go.mod h1:Ulbq5xDmdx47P24EJ+Mb31Zps7vQq+guieG9mghQUaA=
+github.com/hajimehoshi/ebiten/v2 v2.7.10 h1:fsVukQdPDUlalSSpFkuszTy0cK2DL0fxFoSnTVdlmAM=
+github.com/hajimehoshi/ebiten/v2 v2.7.10/go.mod h1:Ulbq5xDmdx47P24EJ+Mb31Zps7vQq+guieG9mghQUaA=
 github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
 github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
 github.com/llgcode/draw2d v0.0.0-20240627062922-0ed1ff131195 h1:Vdz2cBh5Fw2MYHWi3ED2PraDQaWEUhNCr1XFHrP4N5A=

input.go

@@ -209,11 +209,11 @@ func (i *Input) SetHorizontal(h Alignment) {
 }
 
 // SetVertical sets the vertical alignment of the text within the field.
-func (i *Input) SetVertical(h Alignment) {
+func (i *Input) SetVertical(v Alignment) {
 	i.Lock()
 	defer i.Unlock()
 
-	i.field.SetVertical(messeji.Alignment(h))
+	i.field.SetVertical(messeji.Alignment(v))
 }
 
 // SetMask sets the rune used to mask the text buffer contents. Set to 0 to disable.

spite.go

@@ -0,0 +1,106 @@
+package etk
+
+import (
+	"image"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+// Sprite is a resizable image.
+type Sprite struct {
+	*Box
+
+	img       *ebiten.Image
+	imgBounds image.Rectangle
+
+	thumb       *ebiten.Image
+	thumbBounds image.Rectangle
+
+	horizontal Alignment
+	vertical   Alignment
+}
+
+// NewSprite returns a new Sprite widget.
+func NewSprite(img *ebiten.Image) *Sprite {
+	return &Sprite{
+		Box:        NewBox(),
+		img:        img,
+		imgBounds:  img.Bounds(),
+		horizontal: AlignCenter,
+		vertical:   AlignCenter,
+	}
+}
+
+// SetImage sets the image of the Sprite.
+func (s *Sprite) SetImage(img *ebiten.Image) {
+	s.Lock()
+	defer s.Unlock()
+
+	s.img = img
+	s.thumbBounds = image.Rectangle{}
+}
+
+// SetHorizontal sets the horizontal alignment of the Sprite.
+func (s *Sprite) SetHorizontal(h Alignment) {
+	s.Lock()
+	defer s.Unlock()
+
+	s.horizontal = h
+	s.thumbBounds = image.Rectangle{}
+}
+
+// SetVertical sets the vertical alignment of the Sprite.
+func (s *Sprite) SetVertical(v Alignment) {
+	s.Lock()
+	defer s.Unlock()
+
+	s.vertical = v
+	s.thumbBounds = image.Rectangle{}
+}
+
+// Draw draws the Sprite on the screen.
+func (s *Sprite) Draw(screen *ebiten.Image) error {
+	s.Lock()
+	defer s.Unlock()
+
+	op := &ebiten.DrawImageOptions{}
+	op.GeoM.Translate(float64(s.rect.Min.X), float64(s.rect.Min.Y))
+	if s.imgBounds.Dx() == s.rect.Dx() && s.imgBounds.Dy() == s.rect.Dy() {
+		screen.DrawImage(s.img, op)
+		return nil
+	} else if s.thumbBounds.Dx() != s.rect.Dx() || s.thumbBounds.Dy() != s.rect.Dy() {
+		scale, yScale := float64(s.rect.Dx())/float64(s.imgBounds.Dx()), float64(s.rect.Dy())/float64(s.imgBounds.Dy())
+		if yScale < scale {
+			scale = yScale
+		}
+		thumbOp := &ebiten.DrawImageOptions{}
+		thumbOp.GeoM.Scale(scale, scale)
+		if s.horizontal != AlignStart {
+			delta := float64(s.rect.Dx()) - float64(s.imgBounds.Dx())*scale
+			if s.horizontal == AlignCenter {
+				thumbOp.GeoM.Translate(delta/2, 0)
+			} else { // AlignEnd
+				thumbOp.GeoM.Translate(delta, 0)
+			}
+		}
+		if s.vertical != AlignStart {
+			delta := float64(s.rect.Dy()) - float64(s.imgBounds.Dy())*scale
+			if s.vertical == AlignCenter {
+				thumbOp.GeoM.Translate(0, delta/2)
+			} else { // AlignEnd
+				thumbOp.GeoM.Translate(0, delta)
+			}
+		}
+		createThumb := s.thumb == nil
+		if !createThumb {
+			bounds := s.thumb.Bounds()
+			createThumb = bounds.Dx() != s.rect.Dx() || bounds.Dy() != s.rect.Dy()
+		}
+		if createThumb {
+			s.thumb = ebiten.NewImage(s.rect.Dx(), s.rect.Dy())
+		}
+		s.thumb.DrawImage(s.img, thumbOp)
+	}
+	screen.DrawImage(s.thumb, op)
+	return nil
+}

text.go

@@ -118,11 +118,11 @@ func (t *Text) SetHorizontal(h Alignment) {
 }
 
 // SetVertical sets the vertical alignment of the text within the field.
-func (t *Text) SetVertical(h Alignment) {
+func (t *Text) SetVertical(v Alignment) {
 	t.Lock()
 	defer t.Unlock()
 
-	t.field.SetVertical(messeji.Alignment(h))
+	t.field.SetVertical(messeji.Alignment(v))
 }
 
 // Cursor returns the cursor shape shown when a mouse cursor hovers over the