Files
odfstudio/sd
Jaume Pujantell f2736a8407 sd: pptx: fix footer moving places for MSO
In a pptx file with a slide master that has multiple slide layouts, the
footer would loose properties when saved in LO and opened in MSO.
This is due to the master de-duplicating logic that in trying to emulate
pptx's natural way of dealing with master and layout slide it treats
multiple Impress masters as equivalent. This is needed for most export
functions, but when exporting an element from an Impress slide that
references an Impress master (like a footer), we need to differentiate
exactly which one of the equivalent masters it comes from to make the
indices match.

Change-Id: I815c3db54256d934b69108c7268f6d7642c33cbb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/194190
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
(cherry picked from commit 0f21756af8e74b0dd3f25fe4234feb067430838b)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/195225
Tested-by: Jenkins
Reviewed-by: Jaume Pujantell <jaume.pujantell@collabora.com>
2025-12-10 09:02:49 +01:00
..
2025-12-01 18:27:09 +01:00
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LibreOffice Impress / Draw Application

The core directory for the impress/draw applications.

Think of impress as a hack on top of draw.

sd module contains impress/draw specific code, non-shared UI and part of ppt and pptx filter, few other filters too.

the slideshow UI lives here as well, the slideshow engine is in slideshow module though (including the 3D transitions engine slideshow/source/engine/opengl).

the most used filters are ODF's odp, binary ppt and OOXML's pptx. their locations are listed below:

  • odp import and export filters are in xmloff module (mostly xmloff/source/draw)

  • ppt import is in sd/source/filter/ppt (big shared chunks are also in svx)

  • ppt export is in sd/source/filter/eppt (big shared chunks are also in svx)

  • pptx import is in oox/source/ppt (and uses a lot of oox/source/drawingml and oox/source/*)

  • pptx export is in sd/source/filter/eppt (mostly in pptx-* source files) and shared part is in oox/source/export

PPTX Export / Import Filters

PPTX export filter is split into 2 parts. Impress related part is in sd/source/filter/eppt/pptx-* and the other part is in oox/source/export/ because it contains mostly code related to DrawingML, which is shared with writer and calc ooxml export.

The export filter was written in 2009 IIRC and was not much extended feature-wise lately.

Presenter Console

The main screen uses a hardware-accelerated canvas (e.g. cairo canvas), while the entire secondary screen uses a VCL-canvas that is created in sd::framework::FullScreenPane::CreateCanvas().

The secondary screen contains 3 Panes which each have 2 XWindows for the border area & the actual content, and each content Pane is backed by a sd::presenter::PresenterCanvas that wraps the FullScreenPane's canvas and does clipping.

Future Works

Add custom shapes export (see below). enhance text output, we don't write text style for indentation levels now, need to export a:lvl1pPr, a:lvl2pPr, ... elements.

PPTX import was written by Sun/Oracle and then extended in LibreOffice a lot during bug fixing. It is located in oox/source/ppt and oox/source/drawingml. The areas with most bugs (at least until today) were shape placeholders and text style inheritance.