draw2dpdf/gc.go
func NewGraphicContext(pdf *gofpdf.Fpdf) *GraphicContext {
	gc := &GraphicContext{draw2dbase.NewStackGraphicContext(), pdf, DPI}
	gc.SetDPI(DPI)
	return gc
}
func NewGraphicContext(pdf *gofpdf.Fpdf) *GraphicContext {
	gc := &GraphicContext{draw2dbase.NewStackGraphicContext(), pdf, DPI}
	gc.SetDPI(DPI)
	return gc
}
// NewGraphicContext creates a new pdf GraphicContext