1. Thorsten Behrens – tbehrens@novell.com LibreOffice Hacker Novell, Inc.
Impressive Hacking
Thorsten Behrens –
LibreOffice Hacker
Novell, Inc.
FOSDEM 2011
3/3/2017

2. 10k Feet libreoffice/ | -- sd/ … | -- drawinglayer/ | -- slideshow/
3/3/2017
FOSDEM 2011

3. 5k Feet libreoffice/sd/ SdDrawDocument SdPage sd::View SdrObject
sd:ViewShell
3/3/2017
FOSDEM 2011

4. 5k Feet libreoffice/drawinglayer/ BasePrimitive2D Polygon*Primitive2D
VclPixelProcessor2D
VclMetafileProcessor2D
3/3/2017
FOSDEM 2011

5. libreoffice/slideshow/
5k Feet
libreoffice/slideshow/
SlideShowImpl
View
Slide
Shape
3/3/2017
FOSDEM 2011

6. Ground View Concrete Tasks: Make Impress master pages copyable
Attach Impress animations to styles
Impress slide layout extendibility
Implement additional 3D slideshow transitions
Create a Visio import filter for Draw
Enhanced svg export filter
3/3/2017
FOSDEM 2011

7. Copy Master Pages Called on Paste 555 LoC – refactor
BOOL SdDrawDocument::InsertBookmarkAsPage()
Called on Paste
555 LoC – refactor
add a unit test in sd/qa/unit
Find & separate all ~6 use cases
Fix the style/name merging

8. Attach Animations to Styles
libo-build/patches/dev300/sd_effects_styles.diff
Start from prior GSoC project
Understand SfxStyleSheet and SfxItemSet
Read the patch, finish hooking up the custom animation dialogs to the Styles dialog
Finish the broadcasting: changing a style needs to update shape animations
Extend the unit test!

9. Layout extendibility Start from prior GSoC project
libo-build/patches/dev300/impress-autolayout.diff
Start from prior GSoC project
Understand how SdPage hardcodes slide layouts in SdPage::SetAutoLayout()
Look how layout info is stored in AutoLayout.xml
Finish reworking the filters to use abstract layouts
Extend the unit test!

10. More 3D transitions
libo/slideshow/source/engine/OGLTrans/unx/OGLTrans_TransitionerImpl.cxx
add new name to OGLTransitionFactoryImpl::createTransition()
Implement transition like e.g. OGLTransitionImpl::makeFallLeaving()
Notice how easy it is to add animation behaviour, e.g. like RotateAndScaleDepthByWidth

11. Visio Import Filter
Libo/writerperfect/source/wpgimp/WPGImportFilter.cxx
Format docs are here: us/library/dd924076%28v=office.12%29.aspx
Implement the filter by streaming ODF
You'll may get a stand-alone, re-usable filter for free then
Much easier to debug, less implicit state to handle
Add unit tests, a template is here: libo/sdext/source/pdfimport/test/tests.cxx

12. SVG Export Request drawinglayer primitives from SdrModel
Git clone
Request drawinglayer primitives from SdrModel
Iterate over geometry, map to svg
Existing mapping: libo/filter/source/svg/svgwriter.cxx
Consider useful helpers for gradients: libo/basegfx/inc/basegfx/tools/gradienttools.hxx
Please write a unit test, see libo/filter/source/svg/test/* for a template

13. LibreOffice in short Contacting us
Development:
IRC: #libreoffice on freenode.net
Useful links
Easy Hacks:
Build HowTo:
Source code docs:
This document is licensed under the Creative Commons Attribution-Share Alike 3.0 License. This does not include the LibreOffice name, logo, or icon. This does not include LibreOffice source code, which is licensed under the LGPLv3 (GNU Lesser General Public License).
3/3/2017
FOSDEM 2011

14. Try Our First Release! http://www.libreoffice.org/download 3/3/2017
FOSDEM 2011