ux stuff

common/elements/v1/button.go

@@ -0,0 +1,76 @@
+package elements
+
+import (
+	"context"
+	"image/color"
+
+	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/vector"
+	"golang.org/x/image/font"
+)
+import "git.vezzani.net/ben/games/common/ux/v1"
+
+type XAlign int
+type YAlign int
+
+const (
+	AlignCente XAlign = iota
+	AlignLeft
+	AlignRight
+)
+
+const (
+	AlignCenter YAlign = iota
+	AlignTop
+	AlignBottom
+)
+
+type Button struct {
+	mouseHandler
+	Block
+	Label        string
+	OnClick      func() error
+	OnRightClick func() error
+	Style        struct {
+		MouseDownColor *color.Color
+	}
+}
+
+func (b *Button) HandleClick(_ MouseState) error {
+	if b.OnClick == nil {
+		return nil
+	}
+	return b.OnClick()
+}
+
+func (b *Button) getFont() font.Face {
+	if b.Block.Style.Font == nil {
+		return ux.FontFace
+	}
+
+	return *b.Block.Style.Font
+}
+
+func (b *Button) backgroundColor() color.Color {
+	var c *color.Color
+	if b.Block.Style.BackgroundColor != nil {
+		c = b.Block.Style.BackgroundColor
+	} else {
+		c = &ux.BackgroundColor
+	}
+
+	if (b.mouseState.RightDown || b.mouseState.LeftDown) && b.Style.MouseDownColor != nil {
+		c = b.Style.MouseDownColor
+	}
+
+	return *c
+}
+
+func (b *Button) Draw(ctx context.Context, image *ebiten.Image) error {
+	xz, yz := GetZero(ctx)
+	w, h := b.size(ctx)
+
+	vector.StrokeRect(image, xz, yz, w, h, 1, b.backgroundColor(), true)
+
+	return nil
+}