97 lines
4.2 KiB
Text
97 lines
4.2 KiB
Text
Contains graphics related helper code. Lots of the draw and impress code is in this shared library.
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xoutdev
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this is where a lot of wht work would happen to move to the canvas. (what does that mean?)
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svdraw
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transparent gradient stuff.
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== SdrObject ==
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The shapes you can see in LibreOffice (like rectangle, etc.) are SdrObjects.
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They are declared as a hierarchy:
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SdrObject <- SdrAttrObj <- E3dObject <- E3dCompoundObject <- E3dCubeObj
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^ ^ ^ ^ ^ | | ^ ^
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| | | | | | | | +--- E3dExtrudeObj
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| | | | | | | +----- E3dLatheObj
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| | | | | | +------- E3dPolygonObj
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| | | | | +--------- E3dSphereObj
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| | | | +--- E3dScene...
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| | | +--- SdrTextObj <- SdrObjCustomShape...
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| | | ^ ^ ^ ^ ^
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| | | | | | | +--- SdrEdgeObj...
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| | | | | | +----- SdrMeasureObj...
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| | | | | +------- SdrPathObj...
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| | | | +--------- SdrRectObj...
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| | | +----------- SdrTableObj...
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| | +--- SdrObjGroup...
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| + ---- SdrPageObj...
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+------- SdrVirtObj...
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The above is incomplete of course.
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== SdrModel / SdrView ==
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Copied from svdview.hxx:
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First of all the app creates a SdrModel.
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Then it opens a Win and creates a SdrView.
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ShowSdrPage() announces a page at SdrView.
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It's possible to show SdrView in any Wins at once.
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SdrView can show as many Wins as it wants at once. Pages are announced
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or checked out with the help of ShowSdrPage()/HideSdrPage(). For every announced
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page there is a SdrPageView instance in container aPages. If more than one page
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is showed, you have to pay attention that the offset parameter of ShowSdrPage()
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is conformed to the size of the page (to prevent overlapping of two pages).
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SdrView itself is inherited from many objects in a chain of inheritance (all
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that starts with SdrPaintView - that is itself inherited from few classes
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too):
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SdrPaintView <- SdrSnapView <- SdrMarkView <- SdrEditView <- SdrPolyEditView
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^
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+----------------------------------------------------------------+
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SdrGlueEditView <- SdrObjEditView <- SdrExchangeView <- SdrDragView
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^
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+----------------------------------------------------------------+
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SdrCreateView <- SdrView
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From SdrView on, it is not flat, but a real hierarchy again.
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== Drawing Layer / SdrObject(s) ==
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See drawinglayer/README for general information about drawinglayer.
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Below is the class diagram that comes from
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http://www.openoffice.org/marketing/ooocon2006/presentations/wednesday_g11.odp,
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slide number 6.
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.------- Model --------------. .------- View -----------------------------------------.
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| SdrObject - ViewContact | 1..* | ViewObjectContact 1..* |
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| getChild() |------| getPrimitiveList() -----> Object(s) ---> SdrView |
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| getVOC() | | getRecPrimitiveList() Contact |
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| getViewInd... | |________|_____________________________________________|
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| ...ependentPrimitiveList() | |
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|____________________________| generates
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| ______
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V / |
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.----------------------. |
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| basePrimitive | |
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| getRange() |<---'
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| getDecomposition() |
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|______________________|
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For SdrObjects, there are own DrawingLayer primitives in
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svx/source/sdr/primitive2d
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The ViewContact / ViewObject / ViewObjectContact are in svx/source/sdr/contact
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Decomposes the SdrObjects, and does all sort of operations on them.
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[So far I haven't found a definition / concept what are supposed to be the
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ViewContact / ViewObject / ViewObjectContact. If you find that out, please
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fix this README :-)]
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