intermediate commit

1 files changed, 60 insertions, 0 deletions

diff --git a/go/ui/button.go b/go/ui/button.go
new file mode 100644
index 00000000..6454ccac
--- /dev/null
+++ b/go/ui/button.go
@@ -0,0 +1,60 @@
+package ui
+
+import (
+	"image/color"
+
+	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
+	"github.com/hajimehoshi/ebiten/v2/text"
+
+	"muhq.space/muhqs-game/go/font"
+)
+
+type Button interface {
+	Widget
+	Click(x, y int)
+}
+
+type SimpleButton struct {
+	WidgetBase
+	label   string
+	OnClick func(b *SimpleButton)
+	BG      color.Color
+	FG      color.Color
+}
+
+func NewSimpleButton(x, y, w, h int, label string, onClick func(b *SimpleButton)) *SimpleButton {
+	sb := &SimpleButton{NewWidgetBase(x, y, w, h), label, onClick, gray, color.White}
+	sb.renderImpl = func() *ebiten.Image { return sb.render() }
+	return sb
+}
+
+func (b *SimpleButton) render() *ebiten.Image {
+	img := ebiten.NewImage(b.Width, b.Height)
+
+	ebitenutil.DrawRect(img, float64(0), float64(0), float64(b.Width), float64(b.Height), b.BG)
+
+	bounds := text.BoundString(font.Font24, b.label)
+	x := (b.Width - bounds.Dx()) / 2
+	if x < 0 {
+		x = 0
+	}
+
+	y := b.Height - bounds.Dy()/2
+	if y < 0 {
+		y = 0
+	}
+	text.Draw(img, b.label, font.Font24, x, y, b.FG)
+	return img
+}
+
+func (b *SimpleButton) FindObjectAt(x, y int) interface{} {
+	if b.Contains(x, y) {
+		return b
+	}
+	return nil
+}
+
+func (b *SimpleButton) Click(x, y int) {
+	b.OnClick(b)
+}