UniCanvas ctx issue

[andyhill]

Am I having a bad hair day ? (7.4.0, 1.90.1556)

What used to work from my memory is now failing me ???

Please advise what I have forgotten - Thanks.

Minimum Shell Project attached.

 

Project1.zip

[andyhill]

My memory came back to me 🤐

I have to wait till Canvas is ready, different updates have different timings so what worked before now takes more time.

[Sherzod]

So, is the issue resolved?

[andyhill]

Yes, all good Sherzod.

I did ask a while ago to please add to the TUniCanvas/TunimCanvas object an "updated" event. We already have a Ready event that fires once only after initialisation.

In other words, every time we execute a canvas drawing instruction:-

...

UniSession.AddJS('var ctx = fMain.MyCanvas._cc_; '+
                     '{ '+
                       stroke/fill etc.
                     '}; '
                    ); 
...

procedure TfMain.MyCanvasAjaxEvent(Sender: TComponent; EventName: string; Params: TUniStrings);
begin

  if EventName = 'updated' then begin
     ...
  end;

end;

At present we have to allow sufficient time before next action, it would be good to not rely on time but instead an event.