[GSoC] Improved Color Selection - help needed

Krisztian Pinter pin.terminator at gmail.com
Fri Jul 18 10:04:35 PDT 2014

Hi All!

For future reference, the problem was that *GtkComboBox* is converted to a
*ListBox* and not to a *ComboBox* when *"Has Entry"* is turned off in the
.ui file.

All the best,

On 18 July 2014 16:17, Krisztian Pinter <pin.terminator at gmail.com> wrote:

> Hi All!
> I have realized that one problem is that in the old style I was calling
> the ctor of the *ComboBox* directly, and was able to set *WinBits* flags:
> *aPaletteComboBox( this, WinBits( WB_BORDER | WB_DROPDOWN | WB_AUTOSIZE)
> ),*
> However, now I use *VclBuilder::get*, and I can't do this. I tried
> setting the flags after construction
> *mpPaletteComboBox->SetStyle( WinBits(WB_BORDER | WB_DROPDOWN |
> but I think these flags affect the object construction itself, so by that
> point, it's too late.
> *WB_DROPDOWN* is key here, because if it's not set, *mpFloatWin* won't be
> initialized.
> I tried looking in Glade, to see if I can set these flags there, but I
> couldn't find anything.
> All the best,
> Krisztian
> On 18 July 2014 14:37, Krisztian Pinter <pin.terminator at gmail.com> wrote:
>> Hi All!
>> I'm working on converting the palette popup window (*SvxColorWindow_Impl*,
>> looks like this in my branch right now: http://i.imgur.com/4XAbRaH.png)
>> to use the widget layout, and I kind of got it working. It places the
>> widgets based on a .ui file, but a *ComboBox* makes LO crash at the
>> slightest provocation.
>> To make *SvxColorWindow_Impl* use the widget layout, I did some
>> research, and I drew this inheritance diagram:
>> http://i.imgur.com/KK2GegK.jpg
>> I made *FloatingWindow* also inherit from *VclBuilderContainer*, like
>> *Dialog*, and added new ctors to *FloatingWindow* and *SfxPopupWindow*,
>> that take two extra string parameters for the .ui file location and the id
>> of the root widget.
>> I hardcoded the .ui path for *SvxColorWindow_Impl* in its ctor, since
>> it's supposed to be a leaf in the inheritance tree.
>> I also copypasted *GetOptimalSize*, *SetPosSizePixel*, *SetSizePixel*
>>  and *SetPosPixel* from *TabPage* to *FloatingWindow*.
>> This made the popup window show up, if I disabled parts of the code that
>> called methods on the *ComboBox*.
>> The *ComboBox* is initialized with *get*, as all other widgets.
>> I found that *mpFloatWin* in *ComboBox* gets set to *0xcccccccccccccccc*,
>> so I think it's not initialized properly. (I'm giving *get* the correct
>> id from the .ui, so that's not it.)
>> If I call either *AdaptDropDownLineCountToMaximu**m* or *InsertEntry* in
>> the ctor of *SvxColorWindow_Impl*, LO crashes immediately when the popup
>> window is opened.
>> Are there any well known/typical reasons why this would happen?
>> If anyone has any insights, please share them! Thank you!
>> All the best,
>> Krisztian
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