6362c905cf
SdrObject::Free may start a chain of deletions, removing more than one object from maAllIncarnatedObjects. Trying to free them for the second time after that would lead to crash. Change-Id: I8648b05d167acecb2799ecf165c387721528a11a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/119433 Tested-by: Mike Kaganski <mike.kaganski@collabora.com> Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com> |
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.. | ||
doc | ||
inc | ||
qa | ||
sdi | ||
source | ||
uiconfig/ui | ||
util | ||
AllLangMoTarget_svx.mk | ||
CppunitTest_svx_dialogs_test.mk | ||
CppunitTest_svx_gallery_test.mk | ||
CppunitTest_svx_removewhichrange.mk | ||
CppunitTest_svx_unit.mk | ||
Executable_gengal.mk | ||
IwyuFilter_svx.yaml | ||
JunitTest_svx_unoapi.mk | ||
Library_svx.mk | ||
Library_svxcore.mk | ||
Library_textconversiondlgs.mk | ||
Makefile | ||
Module_svx.mk | ||
Package_gengal.mk | ||
README.md | ||
UIConfig_svx.mk | ||
UITest_svx_table.mk |
Graphics Related Helper Code
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.md
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 anSdrView
) - there are
X*Y
ViewObjecContact
instances (1:N relation to both visualizable objects andSdrView
s)