LibreOffice Visio Import Filter: 20 years of drawings opened in your favourite office suite

It is true that the support of the most used Microsoft Visio file formats in LibreOffice will celebrate 1 year next February. And I will gladly have a birthday talk with any of you who will be freezing in Brussels during the next FOSDEM 2013. Nonetheless, even though libvisio was in development for several months already, the Visio story was far from finished when we released that day. As I already mentioned in another blogpost concerning reverse-engineering of file formats, assessment of a conversion quality in this kind of cases is illusory before real users get to stress-test it with real-life documents.
Since the first release of our filter in LibreOffice 3.5.0, we were improving it thanks to bug reports from our users. It is a big thank you that I would like to say to all those that took the bother to submit reports in our bugzilla. Without you, guys, this filter would be only a moot exercise.
But wait... Do I write this blog now only to thank the people who contributed to the current quality of the filter? Yes to a big extent! Nevertheless, I know that the distinguished readers of this blog would like to have some news. And, yes, we have some news.
The libvisio library underwent heavy re-factoring as we started to understand more and more details about the underlying file-format.

1. A particular bug report about files imported as empty pages provided us with a document structure that we did never see before. This resulted in a more generic parser and unification on the way we parse master shapes and visible pages.
2. This re-factoring in its turn allowed us to extend our file-format coverage to all earlier binary Visio file-format versions. We now support all binary Visio documents starting from Visio 1 (released in 1992).
3. Extending the support to earlier file-format versions allowed us to better understand the development of the file-format, to find more information that we did not parse before, and improve the conversion quality for other binary versions too.
4. Another re-factoring came with our work to support the XML-based Visio file-formats, namely the "XML Drawing" also known as *.vdx; and the Microsoft Visio 2013 new file-format, known as *.vsdx.

So the news is that LibreOffice 4.0.0 will be able to open ALL Visio files starting from Visio 1 (release in 1992) until Microsoft Visio 2013 (released just some weeks ago).
And since the readers of this blog are more interested in pictures than in pointless words, here come some candies for your eyes:

File opened in Visio 1.0		The same file opened in LibreOffice 4.0.0 beta1

VSDX File opened in Microsoft Visio 2013		The same file opened in LibreOffice 4.0.0 beta1

So, download the LibreOffice 4.0.0 beta1 and help us testing the new big release. We are interested in bug reports that help us to improve our quality. And for those that would love to support us with donations, just click here: