office-gobmx/svx
Aditya a8fa7c763e tdf#131532:Blurry thumbnails when small shapes added to gallery theme
When small shape is added to gallery theme using drag and drop method, their
 thumbnail is rendered improperly and as a result they are blurry.
This change renders the thumbnails normally without getting blurred.

Change-Id: Ibba7e93ba09a42b0d1bf4a1a833f3fe17c8557f9
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/91319
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
2020-03-29 13:22:09 +02:00
..
doc
inc tdf#130074: add missing translations (line styles part) 2020-03-26 15:24:36 +01:00
qa
sdi tdf#101181: add sidebar panel for Glow effect 2020-03-25 21:42:54 +01:00
source tdf#131532:Blurry thumbnails when small shapes added to gallery theme 2020-03-29 13:22:09 +02:00
uiconfig/ui Resolves: tdf#131582 center image, don't stretch it 2020-03-26 09:39:55 +01:00
util
AllLangMoTarget_svx.mk
CppunitTest_svx_dialogs_test.mk
CppunitTest_svx_unit.mk
Executable_gengal.mk
IwyuFilter_svx.yaml tdf#42949 Fix IWYU warnings in svx/source/[t-x]*/*cxx 2020-03-10 09:29:27 +01:00
JunitTest_svx_unoapi.mk
Library_svx.mk tdf#101181: add sidebar panel for Glow effect 2020-03-25 21:42:54 +01:00
Library_svxcore.mk
Library_textconversiondlgs.mk
Makefile
Module_svx.mk
Package_gengal.mk
README
UIConfig_svx.mk tdf#101181: add sidebar panel for Glow effect 2020-03-25 21:42:54 +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)