Add Barcode contribution package.

This package adds the ability to easily add a barcode to the PDF. This
barcode is generated with the github.com/boombuler/barcode package.

It adds wrappers for all the available barcode types through the
`Register()` and `Register<Type>()` methods. These register methods put
the barcode on the PDF, but not on the page. They will return a unique
key that should be used later on with the `Barcode()` method scale the
barcode and put it on the page.

1 files changed, 6 insertions, 0 deletions

diff --git a/fpdf.go b/fpdf.go
index d77fd4b..da3d92a 100644
--- a/fpdf.go
+++ b/fpdf.go
@@ -2365,6 +2365,12 @@ func (f *Fpdf) GetImageInfo(imageStr string) (info *ImageInfoType) {
 	return f.images[imageStr]
 }
 
+// GetConversionRatio returns the conversion ratio based on the unit given when
+// creating the PDF.
+func (f *Fpdf) GetConversionRatio() float64 {
+	return f.k
+}
+
 // GetXY returns the abscissa and ordinate of the current position.
 //
 // Note: the value returned for the abscissa will be affected by the current