2 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna About Miklos ● From Hungary ● More blurb: http://vmiklos.hu/ ● Google Summer of Code 2010/2011 ● Rewrite of the Writer RTF import/export ● Writer developer since Feb 2012 ● Contractor at Collabora since Sep 2013
3 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Agenda ● What is: ● LibreOffice, The Document Foundation ● Collabora Productivity ● How we handle interoperability ● Examples ● What's new in LibreOffice 4.4/5.0
4 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna What is LibreOffice, The Document Foundation? ● LibreOffice is a free and open source office suite ● Writer, Calc, Impress, etc. ● Available on Windows, Linux, OS X ● The Document Foundation ● Non-profit organization behind the project ● Handles everything except development
5 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna No Single Vendor Dominance ● No one can control more than 30% of the votes in any statutory body of TDF
6 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Total Unique IP Addresses Seen 0 20,000,000 40,000,000 60,000,000 80,000,000 100,000,000 120,000,000 Windows MacOSX Linux Tracking direct download Update Ping origins. Excludes all Linux Distributions downloads ~120m so far ( + Linux ) This time last year was ~65m
8 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Committers per month 0 20 40 60 80 100 120 140 Xamarin T ata Consultancy Services SYNERZIP SUSE Sonicle SIL RedHat Oracle Openismus Nou & Off New Contributors Munich MultiCoreWare Linagora Lanedo Known contributors KACST ITOMIG Igalia IBM Ericsson Collabora CloudOn CIB Canonical Assigned Apache Volunteer ALTA
9 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna What is Collabora Productivity? ● LibreOffice is developed by a healthy mix of: ● Volunteers ● Companies paying full-time developers ● Collabora Ltd. ● Leading open source consultancy ● 8 years of experience, 90+ people ● Collabora Productivity Ltd. ● Dedicated to Enterprise LibreOffice ● Provides Level-3 support (code issues) to all Novell/SUSE LibreOffice clients ● Architects of LibreOffice's OOXML export filters
11 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Interoperability ● Ability to handle files we didn't produce ● Files are just an on-disk representation ● Of what is in the memory ● Of a collection of features ● #1 use-case is of course Microsoft Office ● OOXML, binary formats, RTF ● Both standards and non-standards
12 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna What is a feature? ● Document model ● UNO API ● Layout / View ● Filters ● Tests ● UI ● Documentation ● Specification
13 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Handling interoperability ● Worst case ● Includes all aspects of a new feature ● Best case ● Only filter part is missing ● That's why there is no xslxToPdf() ● File → model → file ● So that for N formats, 2N filters are enough – Instead of N2
15 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Using new Standards ● Importing, rendering & allow a walk- through of Khronos' Collada files:
16 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna 4 levels of “handling” ● Feature is already in core ● Implement the feature in core ● Implement the result of the feature in core ● Just preserve it
19 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Case #2: Import the result of the feature in the filter ● E.g. Table styles, document themes ● SmartArt import ● On import, apply the result of that as direct formatting ● Better, than nothing, but no real editing can be performed
20 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Case #3: Just preserve it ● If a feature is completely unsupported by core, it makes sense to first just preserve it ● Use case: ● Long document ● Full of complicated features ● Just want to correct a typo
21 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna We do it for ODF already ● css::xml::ParaUserDefinedAttributesSupplier ● css::xml::TextUserDefinedAttributesSupplier ● css::xml::UserDefinedAttributesSupplier ● “The idea behind this property is that a parser can throw away all attributes that it cannot handle by itself […] can be written back without loss.” ● WW8 as well: SwTOXBase::maMSTOCExpression
30 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna 3D charting ... ● Streaming data through calc and get high FPS, attractive 3D chart rendering
32 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna De-confusing read-only mode. LibreOffice will now display an infobar to indicate visibly when a document is being opened in read-only mode. (Samuel Mehrbrodt, Joren De Cuyper)
34 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Writer: Improved Interop. Word compatible text highlighting thanks to Tamás Zolnai ● Both highlighting and shading are preserved during import / export of Microsoft Word documents. ● New compatibility option to specify how to export LibreOffice character background to Microsoft Office file formats: as highlighting or as shading. ● To use this option, go to Tools Option Load/Save Microsoft Office. ▸ ▸ ▸
35 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna Calc: Conditional Formatting Data bars in conditional formatting can now have a solid background thanks to Katarina Behrens (CIB) Data bars can be displayed without showing their underlying values thanks to Katarina Behrens (CIB)
36 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna PDF signing & Time- stamping ... Export to PDF now supports the Time-Stamp Protocol (IETF standard RFC 3161). The address of a Time-Stamp Authority can be specified in the security options of PDF settings (Tor Lillqvist, Collabora) – thanks to Wilhelm Tux & donors for a successful crowd funding !
38 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna LibreOfficeKit ● A very simple C & C++ API for LibreOffice ● Exposes file-format filters – Ideal for indexing / extraction: “convert * → HTML” ● Exposes tiled rendering – Convert document fragments → Images ● Exposes editing / selection events – Convert Editing → event flow in each direction. ● A very simple ~header-only API – no linking ● fully abstract: fn pointers, opaque structs etc. ● No sockets opened, no plugins / simple init. ● Global error messages. ● LibreOffice Online, Android, 'loconv' built on this.
39 / 40 Protocols Plugfest Europe 2015, Zaragoza | Miklos Vajna New Platform bits for 5.0 ... ● Native windows 64bit - thanks to David Ostrovsky (CIB), ● Also mergedlibs on Windows to improve cold- start: linking ~much of the app into 1x DLL instead of many. ● Android / Editing ● Online
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