Advanced Diagram support: first additions/reorganizations

To allow advanced Diagram/SmartArt support in the future
this is a first step to organize imported SmartArt Data in
a way that will allow to re-layout loaded SmartArts, under
re-usage of the oox::Theme (held available).

It is designed to work without holding available the
original XML snippets defining the imported Diagram in any
way, also for performance reasons. It tries to re-use some
of the already basically added functionality, including
the systematic layouting using the generic layout
algorithm, plus some already available text extraction.

Before being sure that the former state can be completely
replaced this is optoinal and used when
SAL_ENABLE_ADVANCED_SMART_ART is defined. Some new stuff
is already done but e.g. the redefined reLayout method will
not (yet) be triggered. It works and reliably produces a
re-layouted identical version, also preserving
transformations.

Change-Id: I08cfbae04afa663d0589530aae549216d853128d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/130171
Tested-by: Jenkins
Reviewed-by: Armin Le Grand <Armin.Le.Grand@me.com>

1 files changed, 16 insertions, 3 deletions

diff --git a/svx/source/svdraw/svdogrp.cxx b/svx/source/svdraw/svdogrp.cxx
index f9eb754bb7c2..47e9f0f83901 100644
--- a/svx/source/svdraw/svdogrp.cxx
+++ b/svx/source/svdraw/svdogrp.cxx
@@ -35,6 +35,14 @@
 #include <rtl/ustrbuf.hxx>
 #include <vcl/canvastools.hxx>
 
+DiagramHelper::DiagramHelper() {}
+DiagramHelper::~DiagramHelper() {}
+
+void DiagramHelper::anchorToSdrObjGroup(SdrObjGroup& rTarget)
+{
+    rTarget.mp_DiagramHelper.reset(this);
+}
+
 // BaseProperties section
 std::unique_ptr<sdr::properties::BaseProperties> SdrObjGroup::CreateObjectSpecificProperties()
 {
@@ -48,14 +56,19 @@ std::unique_ptr<sdr::contact::ViewContact> SdrObjGroup::CreateObjectSpecificView
 }
 
 SdrObjGroup::SdrObjGroup(SdrModel& rSdrModel)
-:   SdrObject(rSdrModel),
-    maRefPoint(0, 0)
+: SdrObject(rSdrModel)
+, SdrObjList()
+, maRefPoint(0, 0)
+, mp_DiagramHelper()
 {
     m_bClosedObj=false;
 }
 
 SdrObjGroup::SdrObjGroup(SdrModel& rSdrModel, SdrObjGroup const & rSource)
-:   SdrObject(rSdrModel, rSource)
+: SdrObject(rSdrModel, rSource)
+, SdrObjList()
+, maRefPoint(0, 0)
+, mp_DiagramHelper()
 {
     m_bClosedObj=false;