[JM-DG]

Something like this?

Attachments:

You must be logged in to view attached files.

[ralfiii]

Cool, thanks!
I found TsTitleBar is also an option to place a Plogressbar up there:

procedure TfrmDarwin.sDarwinTitleBarItems1DrawItem(Item: TacTitleBarItem;
  ADrawData: TacTitleItemDrawData);
const cTopOffset = 2;
begin
     if geProgress.Progress > 0 then
     begin
          ADrawData.Bmp.Canvas.Lock;
          OffsetViewportOrgEx(ADrawData.Bmp.Canvas.Handle, aDrawData.ARect.Left, aDrawData.ARect.Top + cTopOffset, nil );
          geProgress.Perform(WM_PAINT, WPARAM(ADrawData.Bmp.Canvas.Handle), 0);
          OffsetViewportOrgEx(ADrawData.Bmp.Canvas.Handle, -aDrawData.ARect.Left, -aDrawData.ARect.Top - cTopOffset, nil );
          ADrawData.Bmp.Canvas.Unlock;
     end;
end;

• This reply was modified 2 years, 10 months ago by ralfiii.

[m.rabatscher]

@ alpha skin team:
this option above works fine BUT! :

In some circumstances the code above leads to a stack overflow
-> if some caches are not ready yet the WM_PAINT call triggers a full repaint?!?! which again triggres
this event handler to be called again.

So basically the code needs to be modified as:

procedure TfrmDarwin.sDarwinTitleBarItems1DrawItem(Item: TacTitleBarItem;
  ADrawData: TacTitleItemDrawData);
const cTopOffset = 2;
begin
     if not fInTitleDrawing and (geProgress.Progress > 0) then
     begin
          // ###########################################
          // #### Now paint the hidden progress bar to the titel bar

          // the Perform(WM_PAINT,...) method can atually cause a stack overflow in case the timing is bad and the components cache has not yet been
          // created before the title bar is drawn. This should not happen though in the component and is just a hack to avoid the stack problem.

          // basically start the darwin with bad sema connection params and see the overflow happen
          fInTitleDrawing := True;
          try
             ADrawData.Bmp.Canvas.Lock;
             OffsetViewportOrgEx(ADrawData.Bmp.Canvas.Handle, aDrawData.ARect.Left, aDrawData.ARect.Top + cTopOffset, nil );
             geProgress.Perform(WM_PAINT, WPARAM(ADrawData.Bmp.Canvas.Handle), 0);
             OffsetViewportOrgEx(ADrawData.Bmp.Canvas.Handle, -aDrawData.ARect.Left, -aDrawData.ARect.Top - cTopOffset, nil );
             ADrawData.Bmp.Canvas.Unlock;
          finally
                 fInTitleDrawing := False;
          end;
     end;
end;

Note: fInTitleDrawing is a member variable of the form

• This reply was modified 2 years, 10 months ago by m.rabatscher.

[Author]

Posts