gyro

type App interface {
	Run() error

	Close() error
	CloseChan() <-chan struct{}
	IsClosed() bool

	Sync(f func())
	Lock()
	Unlock()
}

type AppInitFunc func() error

type Backend interface {
	App() App
	NewApp(f AppInitFunc) (App, error)
	NewWindow(title string, width, height int) (Window, error)
	NewRect() Rect
	NewText() Text
}

type Color struct {
	R uint8 // the red component in the range 0-255
	G uint8 // the green component in the range 0-255
	B uint8 // the blue component in the range 0-255
	A uint8 // the alpha component in the range 0-255
}

type MouseButton int

type MouseState int

type Rect interface {
	AddWidget(w Widget)

	X() int
	SetX(x int)

	Y() int
	SetY(y int)

	Width() int
	SetWidth(w int)

	Height() int
	SetHeight(h int)

	Right() int
	Bottom() int

	Radius() int
	SetRadius(r int)

	Border() int
	SetBorder(b int)

	Color() Color
	SetColor(c Color)

	BorderColor() Color
	SetBorderColor(c Color)
}

type Text interface {
	X() int
	SetX(x int)

	Y() int
	SetY(y int)

	Width() int
	Height() int

	Right() int
	Bottom() int

	Color() Color
	SetColor(c Color)

	Text() string
	SetText(t string)

	FontSize() int
	SetFontSize(s int)

	WrapLen() int
	SetWrapLen(l int)

	MouseHovered() bool

	OnMouseMove(f func(x, y int))
	OnMouseEnter(f func())
	OnMouseLeave(f func())
	OnMouseButton(f func(b MouseButton, s MouseState, x, y int))
}

type Widget interface {
	X() int
	SetX(x int)

	Y() int
	SetY(y int)

	Width() int
	SetWidth(w int)

	Height() int
	SetHeight(h int)

	Right() int
	Bottom() int
}

type Window interface {
	Close() error
	CloseChan() <-chan struct{}
	IsClosed() bool

	AddWidget(w Widget)
}