git-svn-id: http://root.cern.ch/svn/root/trunk@46825 27541ba8-7e3a-0410-8455-c3a389f83636

- set the parameters of legend entries using the parameters of the object they point to (from the object map)


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get relevant diagnostics from the transformers.
Fixes the text diagnostic printer bug #98434.


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Add error drawing in TGraphErrors (still to be improved by merging error drawing of TH1, TProfile and TGraphErrors)


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error message if the symbol wasn't found.


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Implement TMultigraph drawing in case there is no histogram as container, and make changes to draw TGraphErrors (not complete yet)


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the symbol to be missing.


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Still, it's not too bad to have a property to check if window somehow is alive and on screen after DestroyWindow was called.


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Allow for the distinction between the typedef we keep and those that also have a different semantic from their underlying type (namely Double32_t and Float16_t


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Fix (for posterity, see next check-in) Init(const clang::FunctionDecl *decl)'s search/iteration for the decl


git-svn-id: http://root.cern.ch/svn/root/trunk@46785 27541ba8-7e3a-0410-8455-c3a389f83636

Remove hack with fIsDeleted property. It looks like balanced retain/release is done by pools I've added with this property.


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Fix Internal::Next, fIter might not be pointing to a FunctionDecl the very first time (and no need to re-check fSingleDecl since we already asserted to be zero


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can sometimes only destroy window's contents, not window itself (and for example, Cocoa will return
this window in a list of ordered windows) - this can end in a segmentation fault later.
Mark window as deleted. 
Added autorelease pools in several methods.


git-svn-id: http://root.cern.ch/svn/root/trunk@46781 27541ba8-7e3a-0410-8455-c3a389f83636

If a TTree::Draw ends up with an empty histogram, like in the command NTUPLE/PLOT in PAW, an empty box with "Empty" in the centre is drawn.
It was suggested here:
https://savannah.cern.ch/bugs/?98410


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add GetOpenGLScalingFactor() to handle proper scaling on Retina displays.


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TClingMethodInfo was extended to take a single decl in the ctor.
More tweaks to come since the logic of the class is based on the iterator, which is
invalid in the case where it was constructed by passing a single decl.


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