Re: [Libreoffice] controls in basctl

Hi August,

On Tue, 2011-12-13 at 00:20 -0500, August Sodora wrote:
> I've noticed that many of the controls in the basic ide are not
> rendered natively and want to correct that.

        Oh - that is odd :-) by which you're talking about theming ?

>  It seems like the controls that are used as base controls (like the
> things in svtools/inc/svtools/svtabbx.hxx) should be updated to use
> something newer but I'm not so sure where to start.

        Ah - so; of course, the svtools versions are likely to be much more
functional than the VCL versions, at least that is one thought.
SvTabListBox -> SvTreeListBox -> SvLBox -> Control ... oooh - you're
quite right, it is a new base control :-)

>  I'm not even sure what the proper base class for a dialog is. Is
> there any reason that basctl uses these ui elements other than the
> fact nobody has gotten around to looking in there for a while?

        Noel might know; I suspect that (at one stage) they were somehow more
functional than the equivalent VCL versions - of course; if we do an API
audit we might find that is no longer the case ;-)

class SVT_DLLPUBLIC SvLBox
                :public Control
                ,public SvListView
                ,public DropTargetHelper
                ,public DragSourceHelper
                ,public ::vcl::IMnemonicEntryList
                ,public ::vcl::ISearchableStringList
vs.
class VCL_DLLPUBLIC ListBox : public Control

        would suggest some of the possible differences around D&D etc. though
why VCL should not optionally have this in it's ListBox - I don't know.

        Assuming you want to brush it up to use native theming; the rendering
APIs to use (in all their awful oddness ;-) are vcl/inc/vcl/outdev.hxx:

    // Request rendering of a particular control and/or part
    sal_Bool                DrawNativeControl(  ControlType nType,
                                            ControlPart nPart,
                                            const Rectangle& rControlRegion,
                                            ControlState nState,
                                            const ImplControlValue& aValue,
                                            ::rtl::OUString aCaption );

    // Query the native control's actual drawing region (including adornment)
    sal_Bool                GetNativeControlRegion( ControlType nType,
                                                ControlPart nPart,
                                                const Rectangle& rControlRegion,
                                                ControlState nState,
                                                const ImplControlValue& aValue,
                                                ::rtl::OUString aCaption,
                                                Rectangle &rNativeBoundingRegion,
                                                Rectangle &rNativeContentRegion );

        Hopefully that helps ? :-)

        ATB,

                Michael.

-- 
michael.meeks@suse.com  <><, Pseudo Engineer, itinerant idiot