Initial commit

2 months ago · 1b8a1f536a
15 changed files with 672 additions and 0 deletions
--- a/21
+++ b/21
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Trevor Slocum <trevor@rocketnine.space>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/README.md
+++ b/README.md
@ -0,0 +1,18 @@
+# etk - Ebitengine Tool Kit
+[![GoDoc](https://code.rocketnine.space/tslocum/godoc-static/raw/branch/master/badge.svg)](https://docs.rocketnine.space/code.rocketnine.space/tslocum/etk)
+[![Donate via LiberaPay](https://img.shields.io/liberapay/receives/rocketnine.space.svg?logo=liberapay)](https://liberapay.com/rocketnine.space)
+[![Donate via Patreon](https://img.shields.io/badge/dynamic/json?color=%23e85b46&label=Patreon&query=data.attributes.patron_count&suffix=%20patrons&url=https%3A%2F%2Fwww.patreon.com%2Fapi%2Fcampaigns%2F5252223)](https://www.patreon.com/rocketnine)
+
+[Ebitengine](https://github.com/hajimehoshi/ebiten) tool kit for creating graphical user interfaces
+
+
+**Note:** This library is still in development. Breaking changes may be made until v1.0 is released.
+[IME](https://en.wikipedia.org/wiki/Input_method) is not yet supported.
+
+## Documentation
+
+Documentation is available via [godoc](https://docs.rocketnine.space/code.rocketnine.space/tslocum/etk).
+
+## Support
+
+Please share issues and suggestions [here](https://code.rocketnine.space/tslocum/etk/issues).
--- a/box.go
+++ b/box.go
@ -0,0 +1,46 @@
+package etk
+
+import (
+	"image"
+	"sync"
+)
+
+type Box struct {
+	rect image.Rectangle
+
+	children []Widget
+
+	sync.Mutex
+}
+
+func NewBox() *Box {
+	return &Box{}
+}
+
+func (b *Box) Rect() image.Rectangle {
+	b.Lock()
+	defer b.Unlock()
+
+	return b.rect
+}
+
+func (b *Box) SetRect(r image.Rectangle) {
+	b.Lock()
+	defer b.Unlock()
+
+	b.rect = r
+}
+
+func (b *Box) Children() []Widget {
+	b.Lock()
+	defer b.Unlock()
+
+	return b.children
+}
+
+func (b *Box) AddChild(w ...Widget) {
+	b.Lock()
+	defer b.Unlock()
+
+	b.children = append(b.children, w...)
+}
--- a/button.go
+++ b/button.go
@ -0,0 +1,90 @@
+package etk
+
+import (
+	"image"
+	"image/color"
+	"log"
+
+	"code.rocketnine.space/tslocum/messeji"
+	"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/opentype"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+// TODO
+var mplusNormalFont font.Face
+
+func init() {
+	tt, err := opentype.Parse(fonts.MPlus1pRegular_ttf)
+	if err != nil {
+		log.Fatal(err)
+	}
+	const dpi = 72
+	mplusNormalFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
+		Size:    32,
+		DPI:     dpi,
+		Hinting: font.HintingFull,
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+type Button struct {
+	*Box
+
+	label *messeji.TextField
+}
+
+func NewButton(label string, onSelected func()) *Button {
+	textColor := Style.ButtonTextColor
+	if textColor == nil {
+		textColor = Style.TextColor
+	}
+
+	l := messeji.NewTextField(mplusNormalFont)
+	l.SetText(label)
+	l.SetForegroundColor(textColor)
+	l.SetBackgroundColor(color.RGBA{0, 0, 0, 0})
+	l.SetHorizontal(messeji.AlignCenter)
+	l.SetVertical(messeji.AlignCenter)
+
+	return &Button{
+		Box:   NewBox(),
+		label: l, // TODO
+	}
+}
+
+func (b *Button) SetRect(r image.Rectangle) {
+	b.Box.rect = r
+
+	b.label.SetRect(r)
+}
+
+func (b *Button) HandleMouse() (handled bool, err error) {
+	return false, nil
+}
+
+func (b *Button) HandleKeyboard() (handled bool, err error) {
+	return false, nil
+}
+
+func (b *Button) Draw(screen *ebiten.Image) error {
+	// TODO background color
+	// Draw background.
+	screen.SubImage(b.rect).(*ebiten.Image).Fill(Style.ButtonBgColor)
+
+	// Draw label.
+	b.label.Draw(screen)
+
+	// Draw border.
+	const borderSize = 4
+	screen.SubImage(image.Rect(b.rect.Min.X, b.rect.Min.Y, b.rect.Max.X, b.rect.Min.Y+borderSize)).(*ebiten.Image).Fill(Style.BorderColor)
+	screen.SubImage(image.Rect(b.rect.Min.X, b.rect.Max.Y-borderSize, b.rect.Max.X, b.rect.Max.Y)).(*ebiten.Image).Fill(Style.BorderColor)
+	screen.SubImage(image.Rect(b.rect.Min.X, b.rect.Min.Y, b.rect.Min.X+borderSize, b.rect.Max.Y)).(*ebiten.Image).Fill(Style.BorderColor)
+	screen.SubImage(image.Rect(b.rect.Max.X-borderSize, b.rect.Min.Y, b.rect.Max.X, b.rect.Max.Y)).(*ebiten.Image).Fill(Style.BorderColor)
+
+	return nil
+}
--- a/doc.go
+++ b/doc.go
@ -0,0 +1,4 @@
+/*
+Package etk provides an Ebitengine tool kit for creating graphical user interfaces.
+*/
+package etk
--- a/examples/flex/game.go
+++ b/examples/flex/game.go
@ -0,0 +1,33 @@
+//go:build example
+// +build example
+
+package main
+
+import (
+	"code.rocketnine.space/tslocum/etk"
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type game struct {
+}
+
+func newGame() *game {
+	g := &game{}
+	return g
+}
+
+func (g *game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
+	etk.Layout(outsideWidth, outsideHeight)
+	return outsideWidth, outsideHeight
+}
+
+func (g *game) Update() error {
+	return etk.Update()
+}
+
+func (g *game) Draw(screen *ebiten.Image) {
+	err := etk.Draw(screen)
+	if err != nil {
+		panic(err)
+	}
+}
--- a/examples/flex/main.go
+++ b/examples/flex/main.go
@ -0,0 +1,39 @@
+//go:build example
+// +build example
+
+package main
+
+import (
+	"code.rocketnine.space/tslocum/etk"
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+func main() {
+	ebiten.SetWindowTitle("etk showcase")
+
+	g := newGame()
+
+	b1 := etk.NewButton("Button 1", nil)
+	b2 := etk.NewButton("Button 2", nil)
+
+	topFlex := etk.NewFlex()
+	topFlex.AddChild(b1, b2)
+
+	b3 := etk.NewButton("Button 3", nil)
+	b4 := etk.NewButton("Button 4", nil)
+	b5 := etk.NewButton("Button 5", nil)
+
+	bottomFlex := etk.NewFlex()
+	bottomFlex.AddChild(b3, b4, b5)
+
+	rootFlex := etk.NewFlex()
+	rootFlex.SetVertical(true)
+	rootFlex.AddChild(topFlex, bottomFlex)
+
+	etk.SetRoot(rootFlex)
+
+	err := ebiten.RunGame(g)
+	if err != nil {
+		panic(err)
+	}
+}
--- a/examples/showcase/game.go
+++ b/examples/showcase/game.go
@ -0,0 +1,33 @@
+//go:build example
+// +build example
+
+package main
+
+import (
+	"code.rocketnine.space/tslocum/etk"
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type game struct {
+}
+
+func newGame() *game {
+	g := &game{}
+	return g
+}
+
+func (g *game) Layout(outsideWidth, outsideHeight int) (screenWidth, screenHeight int) {
+	etk.Layout(outsideWidth, outsideHeight)
+	return outsideWidth, outsideHeight
+}
+
+func (g *game) Update() error {
+	return etk.Update()
+}
+
+func (g *game) Draw(screen *ebiten.Image) {
+	err := etk.Draw(screen)
+	if err != nil {
+		panic(err)
+	}
+}
--- a/examples/showcase/main.go
+++ b/examples/showcase/main.go
@ -0,0 +1,39 @@
+//go:build example
+// +build example
+
+package main
+
+import (
+	"code.rocketnine.space/tslocum/etk"
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+func main() {
+	ebiten.SetWindowTitle("etk showcase")
+
+	g := newGame()
+
+	b1 := etk.NewButton("Button 1", nil)
+	b2 := etk.NewButton("Button 2", nil)
+
+	topFlex := etk.NewFlex()
+	topFlex.AddChild(b1, b2)
+
+	b3 := etk.NewButton("Button 3", nil)
+	b4 := etk.NewButton("Button 4", nil)
+	b5 := etk.NewButton("Button 5", nil)
+
+	bottomFlex := etk.NewFlex()
+	bottomFlex.AddChild(b3, b4, b5)
+
+	rootFlex := etk.NewFlex()
+	rootFlex.SetVertical(true)
+	rootFlex.AddChild(topFlex, bottomFlex)
+
+	etk.SetRoot(rootFlex)
+
+	err := ebiten.RunGame(g)
+	if err != nil {
+		panic(err)
+	}
+}
--- a/flex.go
+++ b/flex.go
@ -0,0 +1,110 @@
+package etk
+
+import (
+	"image"
+	"log"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type Flex struct {
+	*Box
+
+	vertical bool
+
+	lastRect image.Rectangle
+}
+
+func NewFlex() *Flex {
+	return &Flex{
+		Box: NewBox(),
+	}
+}
+
+func (f *Flex) SetRect(r image.Rectangle) {
+	f.Lock()
+	defer f.Unlock()
+
+	f.Box.rect = r
+
+	// TODO
+	for _, child := range f.children {
+		child.SetRect(r)
+	}
+}
+
+func (f *Flex) SetVertical(v bool) {
+	f.Lock()
+	defer f.Unlock()
+
+	if f.vertical == v {
+		return
+	}
+
+	f.vertical = v
+	f.reposition()
+}
+
+func (f *Flex) HandleMouse() (handled bool, err error) {
+	return false, nil
+}
+
+func (f *Flex) HandleKeyboard() (handled bool, err error) {
+	return false, nil
+}
+
+func (f *Flex) Draw(screen *ebiten.Image) error {
+	f.Lock()
+	defer f.Unlock()
+
+	if !f.rect.Eq(f.lastRect) {
+		f.reposition()
+		f.lastRect = f.rect
+	}
+
+	for _, child := range f.children {
+		err := child.Draw(screen)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (f *Flex) reposition() {
+	l := len(f.children)
+	r := f.rect
+
+	if f.vertical {
+		childHeight := float64(r.Dy()) / float64(l)
+
+		minY := r.Min.Y
+		for i, child := range f.children {
+			maxY := r.Min.Y + int(childHeight*float64(i+1))
+			if i == l-1 {
+				maxY = r.Max.Y
+			}
+			log.Println(i, maxY, image.Rect(r.Min.X, minY, r.Max.X, maxY))
+			child.SetRect(image.Rect(r.Min.X, minY, r.Max.X, maxY))
+
+			minY = maxY
+		}
+
+		return
+	}
+
+	childWidth := float64(r.Dx()) / float64(l)
+
+	minX := r.Min.X
+	for i, child := range f.children {
+		maxX := r.Min.X + int(childWidth*float64(i+1))
+		if i == l-1 {
+			maxX = r.Max.X
+		}
+		log.Println(i, maxX, image.Rect(minX, r.Min.Y, maxX, r.Max.Y))
+		child.SetRect(image.Rect(minX, r.Min.Y, maxX, r.Max.Y))
+
+		minX = maxX
+	}
+}
--- a/game.go
+++ b/game.go
@ -0,0 +1,91 @@
+package etk
+
+import (
+	"fmt"
+	"image"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+var root Widget
+
+var (
+	lastWidth, lastHeight int
+)
+
+func SetRoot(w Widget) {
+	root = w
+}
+
+func Layout(outsideWidth, outsideHeight int) {
+	if root == nil {
+		panic("no root widget specified")
+	}
+
+	if outsideWidth != lastWidth || outsideHeight != lastHeight {
+		root.SetRect(image.Rect(0, 0, outsideWidth, outsideHeight))
+		lastWidth, lastHeight = outsideWidth, outsideHeight
+	}
+}
+
+func Update() error {
+	if root == nil {
+		panic("no root widget specified")
+	}
+
+	var mouseHandled bool
+	var keyboardHandled bool
+	var err error
+
+	children := root.Children()
+	for _, child := range children {
+		if !mouseHandled {
+			mouseHandled, err = child.HandleMouse()
+			if err != nil {
+				return fmt.Errorf("failed to handle widget mouse input: %s", err)
+			}
+		}
+		if !keyboardHandled {
+			keyboardHandled, err = child.HandleKeyboard()
+			if err != nil {
+				return fmt.Errorf("failed to handle widget keyboard input: %s", err)
+			}
+		}
+		if mouseHandled && keyboardHandled {
+			return nil
+		}
+	}
+	if !mouseHandled {
+		_, err = root.HandleMouse()
+		if err != nil {
+			return fmt.Errorf("failed to handle widget mouse input: %s", err)
+		}
+	}
+	if !keyboardHandled {
+		_, err = root.HandleKeyboard()
+		if err != nil {
+			return fmt.Errorf("failed to handle widget keyboard input: %s", err)
+		}
+	}
+	return nil
+}
+
+func Draw(screen *ebiten.Image) error {
+	if root == nil {
+		panic("no root widget specified")
+	}
+
+	err := root.Draw(screen)
+	if err != nil {
+		return fmt.Errorf("failed to draw widget: %s", err)
+	}
+
+	children := root.Children()
+	for _, child := range children {
+		err = child.Draw(screen)
+		if err != nil {
+			return fmt.Errorf("failed to draw widget: %s", err)
+		}
+	}
+	return nil
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,20 @@
+module code.rocketnine.space/tslocum/etk
+
+go 1.18
+
+require (
+	code.rocketnine.space/tslocum/messeji v1.0.0
+	github.com/hajimehoshi/ebiten/v2 v2.3.3
+	golang.org/x/image v0.0.0-20220601225756-64ec528b34cd
+)
+
+require (
+	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20220516021902-eb3e265c7661 // indirect
+	github.com/gofrs/flock v0.8.1 // indirect
+	github.com/jezek/xgb v1.0.1 // indirect
+	golang.org/x/exp/shiny v0.0.0-20220609121020-a51bd0440498 // indirect
+	golang.org/x/mobile v0.0.0-20220518205345-8578da9835fd // indirect
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
+	golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68 // indirect
+	golang.org/x/text v0.3.7 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,90 @@
+code.rocketnine.space/tslocum/messeji v1.0.0 h1:GRZ8/ExI/syR3+0UH3cMjnJFhJnGxQOMSMoCf/v7XLM=
+code.rocketnine.space/tslocum/messeji v1.0.0/go.mod h1:o3MnboWYp/W/ZsYCzga4t/pyzLfXnf6iK8R3KBJuHIM=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20220320163800-277f93cfa958/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20220516021902-eb3e265c7661 h1:1bpooddSK2996NWM/1TW59cchQOm9MkoV9DkhSJH1BI=
+github.com/go-gl/glfw/v3.3/glfw v0.0.0-20220516021902-eb3e265c7661/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
+github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
+github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
+github.com/hajimehoshi/bitmapfont/v2 v2.2.0 h1:E6vzlchynZj6OVohVKFqWkKW348EmDW62K5zPXDi7A8=
+github.com/hajimehoshi/bitmapfont/v2 v2.2.0/go.mod h1:Llj2wTYXMuCTJEw2ATNIO6HbFPOoBYPs08qLdFAxOsQ=
+github.com/hajimehoshi/ebiten/v2 v2.3.3 h1:v72UzprVvWGE+HGcypkLI9Ikd237fqzpio5idPk9KNI=
+github.com/hajimehoshi/ebiten/v2 v2.3.3/go.mod h1:vxwpo0q0oSi1cIll0Q3Ui33TVZgeHuFVYzIRk7FwuVk=
+github.com/hajimehoshi/file2byteslice v0.0.0-20210813153925-5340248a8f41/go.mod h1:CqqAHp7Dk/AqQiwuhV1yT2334qbA/tFWQW0MD2dGqUE=
+github.com/hajimehoshi/go-mp3 v0.3.3/go.mod h1:qMJj/CSDxx6CGHiZeCgbiq2DSUkbK0UbtXShQcnfyMM=
+github.com/hajimehoshi/oto v0.6.1/go.mod h1:0QXGEkbuJRohbJaxr7ZQSxnju7hEhseiPx2hrh6raOI=
+github.com/hajimehoshi/oto/v2 v2.1.0/go.mod h1:9i0oYbpJ8BhVGkXDKdXKfFthX1JUNfXjeTp944W8TGM=
+github.com/jakecoffman/cp v1.1.0/go.mod h1:JjY/Fp6d8E1CHnu74gWNnU0+b9VzEdUVPoJxg2PsTQg=
+github.com/jezek/xgb v1.0.0/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
+github.com/jezek/xgb v1.0.1 h1:YUGhxps0aR7J2Xplbs23OHnV1mWaxFVcOl9b+1RQkt8=
+github.com/jezek/xgb v1.0.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
+github.com/jfreymuth/oggvorbis v1.0.3/go.mod h1:1U4pqWmghcoVsCJJ4fRBKv9peUJMBHixthRlBeD6uII=
+github.com/jfreymuth/vorbis v1.0.2/go.mod h1:DoftRo4AznKnShRl1GxiTFCseHr4zR9BN3TWXyuzrqQ=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8/go.mod h1:HKlIX3XHQyzLZPlr7++PzdhaXEj94dEiJgZDTsxEqUI=
+github.com/yuin/goldmark v1.4.0/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
+golang.org/x/exp v0.0.0-20190731235908-ec7cb31e5a56/go.mod h1:JhuoJpWY28nO4Vef9tZUw9qufEGTyX1+7lmHxV5q5G4=
+golang.org/x/exp/shiny v0.0.0-20220609121020-a51bd0440498 h1:mJjyic/dxHcz1W6IUE8zf6+RltuO8+9mS45tTtb4F6k=
+golang.org/x/exp/shiny v0.0.0-20220609121020-a51bd0440498/go.mod h1:VjAR7z0ngyATZTELrBSkxOOHhhlnVUxDye4mcjx5h/8=
+golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
+golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/image v0.0.0-20211028202545-6944b10bf410/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
+golang.org/x/image v0.0.0-20220321031419-a8550c1d254a/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
+golang.org/x/image v0.0.0-20220601225756-64ec528b34cd h1:9NbNcTg//wfC5JskFW4Z3sqwVnjmJKHxLAol1bW2qgw=
+golang.org/x/image v0.0.0-20220601225756-64ec528b34cd/go.mod h1:doUCurBvlfPMKfmIpRIywoHmhN3VyhnoFDbvIEWF4hY=
+golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
+golang.org/x/mobile v0.0.0-20190415191353-3e0bab5405d6/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
+golang.org/x/mobile v0.0.0-20220518205345-8578da9835fd h1:x1GptNaTtxPAlTVIAJk61fuXg0y17h09DTxyb+VNC/k=
+golang.org/x/mobile v0.0.0-20220518205345-8578da9835fd/go.mod h1:pe2sM7Uk+2Su1y7u/6Z8KJ24D7lepUjFZbhFOrmDfuQ=
+golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190429190828-d89cdac9e872/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210616045830-e2b7044e8c71/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220408201424-a24fb2fb8a0f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68 h1:z8Hj/bl9cOV2grsOpEaQFUaly0JWN3i97mo3jXKJNp0=
+golang.org/x/sys v0.0.0-20220608164250-635b8c9b7f68/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.8-0.20211022200916-316ba0b74098/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
+golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
--- a/style.go
+++ b/style.go
@ -0,0 +1,22 @@
+package etk
+
+import "image/color"
+
+type Attributes struct {
+	TextColor color.Color
+
+	BorderColor color.Color
+
+	ButtonTextColor       color.Color
+	ButtonBgColor         color.Color
+	ButtonBgColorDisabled color.Color
+}
+
+var Style = &Attributes{
+	TextColor: color.RGBA{0, 0, 0, 255},
+
+	BorderColor: color.RGBA{0, 0, 0, 255},
+
+	ButtonBgColor:         color.RGBA{255, 255, 255, 255},
+	ButtonBgColorDisabled: color.RGBA{110, 110, 110, 255},
+}
--- a/widget.go
+++ b/widget.go
@ -0,0 +1,16 @@
+package etk
+
+import (
+	"image"
+
+	"github.com/hajimehoshi/ebiten/v2"
+)
+
+type Widget interface {
+	Rect() image.Rectangle
+	SetRect(r image.Rectangle)
+	HandleMouse() (handled bool, err error)
+	HandleKeyboard() (handled bool, err error)
+	Draw(screen *ebiten.Image) error
+	Children() []Widget
+}