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delphifiremonkey

Retrieving the number of breaks in a FLowLayout


I want to programatically retrieve the number of breaks/newlines in a TFlowLayout.

I have a simple TFlowLayout with 4 regular controls inside (The TFlowLayout does not contain any TFlowLayoutBreak controls).

Depending on the width of the layout it looks like:

// * = control

// Scenario #1: No breaks
* * * *

// Scenario #2: 1 break
* * * 
*

// Scenario #3: 2 breaks
* * 
* * 

// Scenario #4: 3 breaks
*
*
*
*

Is it possible to retrieve the number of breaks of a TFlowLayout programatically or can I only go off the width of the layout to determine the number of breaks?


Solution

  • Counting the changes in Y values for the controls looks to work since the array is in layout order.

    procedure TForm1.Button1Click(Sender: TObject);
    var
      Cnt, I : integer;
    begin
      if FlowLayout1.ControlsCount = 0 then Cnt := 0 else Cnt := 1;
      for I := 1 to FlowLayout1.ControlsCount - 1 do
        if FlowLayout1.Controls[I-1].Position.Y <> FlowLayout1.Controls[I].Position.Y then inc(cnt);
      button1.Text := IntToStr(Cnt);
    end;