office-gobmx/svx
Noel Grandin e189a3f5b5 make some classes module private
Mark some stuff SAL_DLLPUBLIC_RTTI in
    include/vcl/metaact.hxx
in order to make ASAN happy.

Change-Id: I97febe0968bf58b9cbe60ce647f0ada25e6f4bb0
Reviewed-on: https://gerrit.libreoffice.org/84202
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2019-12-05 07:01:44 +01:00
..
doc
inc drop dbgutil SdrItemBrowser FloatingWindow 2019-12-04 13:06:42 +01:00
qa CppunitTest_svx_unit: simplify testSemiTransparentText 2019-12-04 09:01:40 +01:00
sdi drop dbgutil SdrItemBrowser FloatingWindow 2019-12-04 13:06:42 +01:00
source make some classes module private 2019-12-05 07:01:44 +01:00
uiconfig/ui weld OAddFieldWindow 2019-12-03 21:04:45 +01:00
util
AllLangMoTarget_svx.mk
CppunitTest_svx_dialogs_test.mk
CppunitTest_svx_unit.mk svx: add rendering for semi-transparent shape text 2019-11-20 19:04:36 +01:00
Executable_gengal.mk
JunitTest_svx_unoapi.mk
Library_svx.mk
Library_svxcore.mk drop dbgutil SdrItemBrowser FloatingWindow 2019-12-04 13:06:42 +01:00
Library_textconversiondlgs.mk
Makefile
Module_svx.mk
Package_gengal.mk
README
UIConfig_svx.mk weld FmFieldWin 2019-12-01 20:51:12 +01:00

Contains graphics related helper code. Lots of the draw and impress code is in this shared library.

xoutdev
this is where a lot of wht work would happen to move to the canvas. (what does that mean?)

svdraw
transparent gradient stuff. [seriously? surely much more, too]

== SdrObject ==

The shapes you can see in LibreOffice (like rectangle, etc.) are SdrObjects.
They are declared as a hierarchy:

SdrObject <- SdrAttrObj <- E3dObject <- E3dCompoundObject <- E3dCubeObj
    ^ ^ ^             ^            ^              | | ^ ^
    | | |             |            |              | | | +--- E3dExtrudeObj
    | | |             |            |              | | +----- E3dLatheObj
    | | |             |            |              | +------- E3dPolygonObj
    | | |             |            |              +--------- E3dSphereObj
    | | |             |            +--- E3dScene...
    | | |             |
    | | |             +--- SdrTextObj <- SdrObjCustomShape...
    | | |                   ^ ^ ^ ^ ^
    | | |                   | | | | +--- SdrEdgeObj...
    | | |                   | | | +----- SdrMeasureObj...
    | | |                   | | +------- SdrPathObj...
    | | |                   | +--------- SdrRectObj...
    | | |                   +----------- SdrTableObj...
    | | +--- SdrObjGroup...
    | + ---- SdrPageObj...
    +------- SdrVirtObj...

The above is incomplete of course.

== SdrModel / SdrView ==

Copied from svdview.hxx:

  First of all the app creates a SdrModel.
  Then it opens a Win and creates a SdrView.
  ShowSdrPage() announces a page at SdrView.
  It's possible to show SdrView in any Wins at once.

  SdrView can show as many Wins as it wants at once. Pages are announced
  or checked out with the help of ShowSdrPage()/HideSdrPage(). For every announced
  page there is a SdrPageView instance in container aPages. If more than one page
  is showed, you have to pay attention that the offset parameter of ShowSdrPage()
  is conformed to the size of the page (to prevent overlapping of two pages).

SdrView itself is inherited from many objects in a chain of inheritance (all
that starts with SdrPaintView - that is itself inherited from few classes
too):

SdrPaintView <- SdrSnapView <- SdrMarkView <- SdrEditView <- SdrPolyEditView
                                                                   ^
  +----------------------------------------------------------------+
  |
  SdrGlueEditView <- SdrObjEditView <- SdrExchangeView <- SdrDragView
                                                                   ^
  +----------------------------------------------------------------+
  |
  SdrCreateView <- SdrView

From SdrView on, it is not flat, but a real hierarchy again.

== Drawing Layer / SdrObject(s) ==

See drawinglayer/README for general information about drawinglayer.

Below is the class diagram that comes from
http://www.openoffice.org/marketing/ooocon2006/presentations/wednesday_g11.odp,
slide number 6.

.------- Model --------------.      .------- View -----------------------------------------.
| SdrObject - ViewContact    | 1..* | ViewObjectContact                                    |
|              getChild()    |------|    getPrimitiveList()  -----> Object(s) ---> SdrView |
|              getVOC()      |      |    getRecPrimitiveList()      Contact                |
|              getViewInd... |      |________|_____________________________________________|
| ...ependentPrimitiveList() |               |
|____________________________|            generates
                                             |           ______
                                             V          /      |
                                   .----------------------.    |
                                   | basePrimitive        |    |
                                   |   getRange()         |<---'
                                   |   getDecomposition() |
                                   |______________________|

For SdrObjects, there are own DrawingLayer primitives in
svx/source/sdr/primitive2d

The ViewContact / ViewObject / ViewObjectContact are in svx/source/sdr/contact
Decomposes the SdrObjects, and does all sort of operations on them.

If the number of visualizable objects (e.g. SdrObjects) is X, and the number of
SdrViews is Y, then:

- there are X ViewContact instances (1:1 relation with a visualizable object)
- there are Y ObjectContact instances (1:1 relation with an SdrView)
- there are X*Y ViewObjecContact instances (1:N relation to both
  visualizable objects and SdrViews)