Re: [E-devel] C API => Unified API

Cedric Bail <[email protected]> Tue, 29 Jun 2021 21:24:32 +0000

Newsgroups	gmane.comp.window-managers.enlightenment.devel
Message-ID	<Ra5lrOzS4oBLTTkndZ913YkIcJUn35mtBMZ9no7L6BqPdZ-OwOa1AhBCSLYW6NBBwFOiqhdhmN-M3uZoflYTPU2INCoxP7qEDCEVmyQOpWU=@ddlm.me>

On Tuesday, June 29th, 2021 at 12:38 PM, Andreas Volz <[email protected]> wrote:
> Am 28.06.21 um 22:40 schrieb Cedric Bail:
> > On Monday, June 28th, 2021 at 11:47 AM, Andreas Volz [email protected] wrote:
> > > Am 28.06.21 um 17:52 schrieb Cedric Bail:
> > > > On Sunday, June 27th, 2021 at 12:55 PM, Andreas Volz [email protected] wrote:
[...]
> > > > > For example I use edje_object_part_external_param_*() much in my
> > > > > application. I thought it might be an equivalent in Efl.Ui.Layout_Part
> > > > > but I don't see an obvious function.
[...]
> > > > Yes, I think this would be part of the efl_part API. Which should be something
> > > > like:
> > > >  efl::eo::downcast<efl::Text>(layout.part("title")).text_set("hello");

> > > Hm, I'd assume this works for text objects. But with the external API[1]
> > > you could get/set also int/bool data if you know the object supports it
> > > without detail information of what UI type is the object. With the C API
> > > this is possible.
> > 

> > With the efl_part, in the case of an external, you should actually get the object
> > itself, not some kind of wrapper. You might have to do something like:
> > 

> > Eo *obj = efl_content_get(efl_part(layout, "yourpart"));
> > 

> > I am guessing you will need to do some casting in the C++ API, no idea on
> > that part I haven't played with it in a very long time and don't remember
> > enough.
> 

> I searched my local headers and found a file
> 

> efl_canvas_layout_part_external.eo[1] which defines (nearly) what I
> need. This shows internally the same code as you quoted above. I would
> have found it before but it seems the online docs are not recent. Maybe
> they need to be re-generated?
> 

> https://www.enlightenment.org/develop/api/efl/canvas/layout_part_external/property/content
> => This topic does not exist yet

I don't know how that part was updated before.
 

> But I still don't know how to set a non-text value on a efl_part. This
> were the reasons those tpes have been used in the old API.
> 

> typedef enum _Edje_External_Param_Type
> {
> EDJE_EXTERNAL_PARAM_TYPE_INT,
> EDJE_EXTERNAL_PARAM_TYPE_DOUBLE,
> EDJE_EXTERNAL_PARAM_TYPE_STRING,
> EDJE_EXTERNAL_PARAM_TYPE_BOOL,
> EDJE_EXTERNAL_PARAM_TYPE_CHOICE,
> EDJE_EXTERNAL_PARAM_TYPE_MAX
> } Edje_External_Param_Type;
> 

> With this you could put a e.g. spinner in a Layout and assign a INT
> value and it just works. Without knowing what widget type exactly is used.

The new interface is build around the idea that you have interfaces. Text is an
interface, not an object per say in the example above. For spinner, I believe they
expose an Range_Display interface. So for setting the range value, you would do something
like the following:
efl::eo::downcast<efl::ui::Range_Display>(layout.part("spin")).range_value_set(10);

Cedric

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