LayerRenderer ( .LayerRenderer) renders all the layers. Rendering requests through LayerRenderer. RenderControllerThread ( .RenderControllerThread) executes the GLController ( .GLController) - holder of the OpenGL context. It uses the SurfaceView ( ) as the main surface to draw on LayerView ( .LayerView) is the document view of the application. Such layers are: documentīackground, scroll handles, and also the document tiles. Layers - document view is rendered using many layers. Viewport - the viewport is the currently visible part of the document. Which includes listening to touch events, recalculating the viewport, tiled handlingĪnd rendering the layers to the document. Document Viewįrom here on one of the most interesting pieces are the classes around document view, Of the application - everything starts up and tears down from here ( onCreate, onResume,

LibreOfficeMainActivity ( ) is the entry point LOKitThread ( ) communicates with LO via JNI (this canīe done only for one thread) and processes events (defined in ) It receives calls from LOKitThread, and may emit callback A native thread created by LibreOfficeKit (we call it the soffice thread), where.Processes events in FCFS order, goes to sleep when no more event is available andĪwakens when there are events in the queue again). Events are stored in a blocking queue (thread In addition it also receives events from the soffice thread (see below) A thread ( LOKitThread), that performs LibreOfficeKit calls, which may take more time.An OpenGL thread which contains the OpenGL context and is responsible for drawingĪll layers (including tiles) to the screen.The Android UI thread, we can’t perform anything here that would take a considerable.The application implements editing support using 4 threads: Library: liblo-native-code.so, which is bundled together with the application. The application contains the LibreOffice core in one shared

It uses OpenGL ES 2 for rendering of the document tiles which are gathered from LibreOffice Android application - the code is based on Fennec (Firefox for Android). InĪddition it is a home to LibreOfficeKit (LOK - see libreofficekit/README.md) JNI Contains common code for all projects on Android to bootstrap LibreOffice.

Libreoffice android app