On Fri, Dec 5, 2008 at 1:50 PM, Hendrik Siedelmann
<[EMAIL PROTECTED]> wrote:
> 2008/12/5 Gustavo Sverzut Barbieri <[EMAIL PROTECTED]>:
>> On Thu, Dec 4, 2008 at 10:59 PM, The Rasterman Carsten Haitzler
>> <[EMAIL PROTECTED]> wrote:
>>> On Fri, 5 Dec 2008 00:03:18 +0100 "Hendrik Siedelmann"
>>> <[EMAIL PROTECTED]> babbled:
>>>
>>>> 2008/12/3 The Rasterman Carsten Haitzler <[EMAIL PROTECTED]>:
>>>> > On Tue, 2 Dec 2008 21:02:54 +0100 "Hendrik Siedelmann"
>>>> > <[EMAIL PROTECTED]> babbled:
>>>> >
>>>> >> 2008/11/30 The Rasterman Carsten Haitzler <[EMAIL PROTECTED]>:
>>>> >> > On Sun, 30 Nov 2008 19:27:35 +0100 "Hendrik Siedelmann"
>>>> >> > <[EMAIL PROTECTED]> babbled:
>>>> >> >
>>>> >> >> Hi,
>>>> >> >>
>>>> >> >> while fooling around with elementary trying to write some widgets I
>>>> >> >> found a pretty huge limitation in edje.
>>>> >> >> I was writing a page flip widget to be used for example for
>>>> >> >> slideshow,
>>>> >> >> document viewer but also for page switching using cursor/finger on
>>>> >> >> touchscreen. But there seems to be no way to interaktiv set the
>>>> >> >> transition between two states in edje. For example I want to blend
>>>> >> >> between two parts depending on how far the cursor moved while pressed
>>>> >> >> down. This way mouse gestures would get visualised by a preview of
>>>> >> >> what would happen. But there I found no way to do this in edje one
>>>> >> >> can
>>>> >> >> only do the full transition...
>>>> >> >
>>>> >> > for this - you need to use embryo script {}... it is possible - with a
>>>> >> > bit of thought and complexity and custom states :)
>>>> >>
>>>> >> Do you mean set_tween_state? Is there a reason this is not available
>>>> >> over the c interface?
>>>> >
>>>> > beacuse this is meant to be abstracted - c shouldnt be playing with
>>>> > stats of
>>>> > parts directly. you can talk to the edje via messages - these are used in
>>>> > many places in e and efl to abstract apis between edje and c code.
>>>>
>>>> But whenever edje is used inside a program the program code and the
>>>> edje code depend on each other anyway. Most programmers (me included)
>>>> choose a programming language for reasons. Forcing them to learn and
>>>> use embryo for some parts is propably not the best approach.
>>>
>>> edje is meant to abstract this so it can be replaced with some other design
>>> and
>>> setup that does something different - and the designer chooses this in the
>>> edje :)
>>
>> yep, Hendrik, you're abusing edje and then complaining it doesn't
>> behave. As you said, you choose your language and you can keep using
>> it, just design your animation using it (hint: create your smart
>> object, swallow it in your edje, possible using edje for your smart
>> children... that is: edjes as parent and children of your smart).
>>
>> depending on what you want, this can be a bit easier... if you can fit
>> into the "box" (sequence of items) model, then you can just implement
>> one function and register that function with edje, then you feed it
>> parameters using layout data (void*).
>
> Well I trust you if you say I'm abusing edje (poor thing).
> It's difficult to get documentation about well everything surrounding
> the efl, so excuse me if I don't know what you mean.
> Do you mean I should use evas directly from c together with a timer to
> do the animations interactiv? Because I still want to use edje to do
> complex transitions and keep it themable.
> I now do it (already working) with embryo functions which react on
> mouse events and then just use set_tween_state and programs to do a
> whole transition (on signals from outside) or that finish the
> transition (on mouse up).
> I'd like to do it with c so the edc file only contains the
> transitions, but not if that requires much more code than with embryo.
I see and understand your point, I tried to did things like that in
the past, but Edje is a layer that makes some things easier, while
others more difficult as you noticed, often these that are more
difficult are not the intended use, thus why I say "abuse".
I guess using embryo with tween state is the best so far. You can also
jump in and help with lua scripting (or general scripting if you wish)
to make script-only edje objects, they would be more powerful and
things like this would remain in the theme, but be real programmable.
So far we lack human power to write such thing, so we're stuck with
Embryo :-P
--
Gustavo Sverzut Barbieri
http://profusion.mobi embedded systems
--------------------------------------
MSN: [EMAIL PROTECTED]
Skype: gsbarbieri
Mobile: +55 (19) 9225-2202
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