Resizing a window with Shift to keep ration Width/Height

[Laurent Balland]

Thanks Miklos for your feedback.

I found the code for Draw both in SdrObject::ImpDragCalcRect [1] and 
SdrTextObj::ImpDragCalcRect [2]

But it is not used for charts. I noticed that the rules to make 
proportional with or without Shift are different between drawing objets 
and charts :

- for Drawing objects: default is not proportional

- for Chart and Pictures: default is proportional for corners handles 
and not proportional for edge handles

Does anyone has some code pointers for resizing a picture or a chart?

Best regards

Laurent

[1] 
https://opengrok.libreoffice.org/xref/core/svx/source/svdraw/svdobj.cxx?r=1c2df42580f381ccfdd1863bc1da4c81314533aa#1252

[2] 
https://opengrok.libreoffice.org/xref/core/svx/source/svdraw/svdotxdr.cxx?r=5e55d482b19812e2fc3063eb7e718d7013635b33#74


Le 01/04/2025 à 10:54, Miklos Vajna a écrit :
> Hi Laurent,
>
> On Mon, Mar 31, 2025 at 07:37:49PM +0200, Laurent Balland <laurent.balland at mailo.fr> wrote:
>> I'm working on bug 163816 [1] to preserve ratio Width/Height of an OLE
>> object (such as a chart in Calc) when Shift is pressed. Work under progress
>> is here [2].
>>
>> I suppose that such behavior is already coded somewhere in LibO (for
>> instance when resizing an object in Draw). Can someone provide some
>> interesting code pointers?
> I believe SdrSnapView::SetOrtho() is related, also Writer's
> SwWrtShell::Drag() is related, this is called "proportional" resizing.
> See the code at
> <https://github.com/libreoffice/core/blob/3e88456b7135ef2cd0f0121d46cc56436ce56ee5/sw/source/uibase/docvw/edtwin.cxx#L4510-L4543>,
> hopefully some of that is also relevant for Calc.
>
> Regards,
>
> Miklos