something on the screen” Pioneered by Tor Lillqvist and Michael Meeks, LibreOffice was cross-compiled to Android • Research work at SUSE • Sheer amount of limitations on the way • Linker – a limited about of dynamic libraries in one app • Fontconfig, using the assets, … • Mergelib, components constructors – Matúš Kukan • First loader – Iain Billett • Debugging a nightmare! • But resulted in the first version showing LibreOffice on the screen
• Collabora Productivity was spun off by SUSE, and got a client CloudOn – who needed a mobile app on iOS • So far their business was streaming MSO instance to the user, but wanted a native app • At that time, tiled rendering was used by many, iOS even had a convenient widget for this • LibreOfficeKit was started • Thin C/C++ API to access internals of the LibreOffice core • Focused on the tiled rendering • Callbacks for the events that come from the core – triggered by timers or users actions
for rendering Tomaž Vajngerl introduced tiled rendering into the Android app • Thanks to Smoose who helped co-funding this • Using the compositing code from Mozilla • The document consists of “tiles”, each can be rendered separately • Editing made possible thanks to Miklos Vajna • TDF tender helped • It’s easy to re-draw a tile after invalidation!
Online code • Finally Collabora has found (co-)funding for developing Online – thanks to IceWarp • Initially a viewer • Extended to editing app (one editor) • Then shared editing – one editor who could edit, the others viewers • Was possible to switch who was editing, but still only one person • After several years – collaborative editing • Reusing the “multiple views” feature in LibreOffice (that I think nobody have been using until then ;-) - and suddenly it is the core of everything) • Server part in C++, client part re-using LeafletJS
the Android app, but not enough Christian Lohmaier, Ximeng Zu, Mert Tumer and many more are adding various features • But the Android app is not catching up • Lots of LibreOfficeKit improvements triggered by the Online development
of Online and Mobile • Turns out that having three (web, iOS, Android) distinct implementations of the editing functionality on top of LibreOfficeKit is extremely hard to maintain • Android version lagging behind terribly, iOS not in a great shape either • But Online flourishing • Idea: Share the code, have even the Mobile apps inside a webview • Jan Iversen started prototyping, Tor Lillqvist took it to the next level • The iOS app switched to this approach • Surprisingly the performance of this solution is reasonably good!
rendering core dialogs via JS • Developed by Szymon Klos • First for the mobile apps and online • To re-use the sidebar for navigation using one finger • Actions called via .uno commands This is the sidebar!
everywhere • Chromebook support – Android app extended to handle that • JS dialogs on the next level – now the Notebookbar is using the same thing • .uno: commands were not enough • Reusing the uitest API! • Great – because improvements in the handling of JS dialogs improve the testing possibilities in LibreOffice and vice versa
More JS dialogs usage everywhere • Even the sidebar in the desktop case? • Reduce usage of LeafletJS (loleaflet) • Use canvas for the rendering • All the Writer / Calc / Impress do now, but need bugfixing • Reduce usage of POCO • Paper cut fixing • Lots of good feedback from the Google Play reviews