CentrED/URectList.pas

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(*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* http://www.opensource.org/licenses/cddl1.php.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* http://www.opensource.org/licenses/cddl1.php. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying * information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Portions Copyright 2008 Andreas Schneider
*)
unit URectList;
{$mode objfpc}{$H+}
interface
uses
SysUtils,Classes;
type
TRectList = class(TList)
protected
function GetRect(AIndex: Integer): TRect;
procedure SetRect(AIndex: Integer; ARect: TRect);
public
function Add(ALeft, ATop, ARight, ABottom: Integer): Integer;
procedure Clear; override;
procedure Delete(AIndex: Integer); reintroduce;
property Rects[Index: Integer]: TRect read GetRect write SetRect;
end;
PRect = ^TRect;
implementation
{ TRectList }
function TRectList.GetRect(AIndex: Integer): TRect;
begin
Result := PRect(Items[AIndex])^;
end;
procedure TRectList.SetRect(AIndex: Integer; ARect: TRect);
var
internalRect: PRect;
begin
internalRect := Items[AIndex];
System.Move(ARect, internalRect^, SizeOf(TRect));
end;
function TRectList.Add(ALeft, ATop, ARight, ABottom: Integer): Integer;
var
internalRect: PRect;
begin
new(internalRect);
internalRect^.Left := ALeft;
internalRect^.Top := ATop;
internalRect^.Right := ARight;
internalRect^.Bottom := ABottom;
Result := inherited Add(internalRect);
end;
procedure TRectList.Clear;
var
i: Integer;
internalRect: PRect;
begin
for i := 0 to Count - 1 do
begin
internalRect := Items[i];
dispose(internalRect);
end;
inherited;
end;
procedure TRectList.Delete(AIndex: Integer);
var
internalRect: PRect;
begin
internalRect := Items[AIndex];
dispose(internalRect);
inherited Delete(AIndex);
end;
end.