Solved

how to count the order of a image list?

Posted on 2013-11-25
4
356 Views
Last Modified: 2013-11-26
Hello guys

I have a panel with 7 images, with this panel I can exchange the images among them, but I need that all those images be in the order by picture.

For each image I gave a number in its tag from 1 to 7

How can I count all images that is in my panel and knows if they are in correct order from 1 to 7 and not different of these?

I attached an example with a panel with images.

This is a part of this thread


Thread with card and drag and drop


thanks
Alexandre
OrderCount.zip
0
Comment
Question by:hidrau
  • 3
4 Comments
 
LVL 25

Accepted Solution

by:
Sinisa Vuk earned 500 total points
ID: 39676865
I use simple sorting of image position (X) and after that check is order of index (Tag) is ok.

function TForm1.IsCorrectOrder(pnl: TPanel): Boolean;
var
  i, j: Integer;
  ar: array of TPoint;
  pt: TPoint;
begin
  //default - if found incorrect one then flag will be set to False
  Result := True;
  SetLength(ar, pnl.ControlCount);

  for i := 0 to pnl.ControlCount-1 do
  begin
    ar[i].X := pnl.Controls[i].Left; //keep x pos
    ar[i].Y := pnl.Controls[i].Tag;  //keep assoc. tag
  end;

  //try to sort array
  for i := High(ar) downto Low(ar) do
  begin
    for j := Low(ar) to High(ar) - 1 do
    begin
      if ar[j].X > ar[j + 1].X then
      begin
        pt := ar[j];
        ar[j] := ar[j + 1];
        ar[j + 1] := pt;
      end;
    end;
  end;

  //check order - compare if first is lower than next
  j := 0;
  for i := Low(ar) to High(ar) do
  begin
    if (ar[i].Y < j) then
    begin
      Result := False;
      Break;
    end;
    j := ar[i].Y; //keep this
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  if IsCorrectOrder(Panel3) then
    ShowMessage('ok')
  else
    ShowMessage('not ok');
end;

Open in new window

0
 
LVL 1

Author Comment

by:hidrau
ID: 39677208
Very interesting, I am gonna check that.

Once again, Thanks Sinisav for your help. Yesterday I was thinking about that and I didn't get any solution. What you told me, open my mind about. :)
0
 
LVL 1

Author Comment

by:hidrau
ID: 39679338
Your code is ok.
0
 
LVL 1

Author Closing Comment

by:hidrau
ID: 39679438
Thanks very much Sinisav.

God always bless you :)
0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

Objective: - This article will help user in how to convert their numeric value become words. How to use 1. You can copy this code in your Unit as function 2. than you can perform your function by type this code The Code   (CODE) The Im…
Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
You have products, that come in variants and want to set different prices for them? Watch this micro tutorial that describes how to configure prices for Magento super attributes. Assigning simple products to configurable: We assigned simple products…

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now