viewport

type ViewportLine struct {
	X1          float64
	Y1          float64
	X2          float64
	Y2          float64
	StrokeColor color.Color
	StrokeWidth float64
	// contains filtered or unexported fields
}

type ViewportObject interface {
	CanvasObjects(viewport *ViewportWidget) []fyne.CanvasObject
	Refresh(viewport *ViewportWidget)
}

type ViewportWidget struct {
	widget.BaseWidget
	Width   int
	Height  int
	Zoom    float64
	XOffset float64
	YOffset float64
	Objects []ViewportObject
}