zntg/ui/control.go

package ui

import (
	"opslag.de/schobers/geom"
)

type Control interface {
	Arrange(Context, geom.RectangleF32, geom.PointF32, Control)
	DesiredSize(Context, geom.PointF32) geom.PointF32
	Handle(Context, Event) bool
	Render(Context)

	Bounds() geom.RectangleF32
	BoundsUnclipped(Context, ControlPath) geom.RectangleF32
	Disable()
	Enable()
	IsDisabled() bool
	IsInBounds(p geom.PointF32) bool
	IsOver() bool
	Offset() geom.PointF32
	ScrollIntoView(Context, ControlPath)

	Self() Control
	SetSelf(Control)
	Parent() Control
}

type ControlPath []Control

func (p ControlPath) BoundsUnclipped(ctx Context, c Control) geom.RectangleF32 {
	if len(p) == 0 {
		return c.Bounds()
	}
	// switch next := p[0].(type) {
	// case *ContainerBase:
	// 	return next.BoundsUnclipped(ctx, p[1:])
	// case *StackPanel:
	// 	return next.BoundsUnclipped(ctx, p[1:])
	// }
	return p[0].BoundsUnclipped(ctx, p[1:])
}

func (p ControlPath) Prepend(control Control) ControlPath {
	return append(ControlPath{control}, p...)
}

type RootControl interface {
	Control

	Init(Context) error
}