8eaa889f85
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@9290 8e941d3f-bd1b-0410-a28a-d453659cc2b4
112 lines
2.4 KiB
ObjectPascal
112 lines
2.4 KiB
ObjectPascal
{
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License: modified LGPL with linking exception (like RTL, FCL and LCL)
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See the file COPYING.modifiedLGPL.txt, included in the Lazarus distribution,
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for details about the license.
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See also: https://wiki.lazarus.freepascal.org/FPC_modified_LGPL
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}
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unit mvExtraData;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, Graphics;
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type
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{ TDrawingExtraData }
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TDrawingExtraData = class
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private
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FColor: TColor;
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FId: integer;
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procedure SetColor(AValue: TColor);
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public
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constructor Create(aId: integer); virtual;
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property Color: TColor read FColor write SetColor;
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property Id: integer read FId;
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end;
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TTrackExtraData = class(TDrawingExtraData)
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private
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FWidth: Double;
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procedure SetWidth(AValue: Double);
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public
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property Width: Double read FWidth write SetWidth; // Line width in mm
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end;
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{ TSegmentExtraData }
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TSegmentExtraData = class(TObject)
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public
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type TSegmentMark = (smNone, smStart, smMid, smEnd);
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private
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FMark: TSegmentMark;
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public
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constructor Create(AMark: TSegmentMark);
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class function MarkOf(const APoint: TObject): TSegmentMark;
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property Mark: TSegmentMark read FMark write FMark;
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end;
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implementation
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uses
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mvGpsObj;
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{ TSegmentExtraData }
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constructor TSegmentExtraData.Create(AMark: TSegmentMark);
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begin
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inherited Create;
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FMark := AMark;
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end;
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// Can be invoked with APoint.Extradata or with APoint itself
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class function TSegmentExtraData.MarkOf(const APoint: TObject): TSegmentMark;
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begin
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// Quick check for Nil (APoint.Extradata, APoint)
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if not Assigned(APoint) then
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Result := smNone
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// Check for non-nil TSegmentExtraData (APoint.Extradata)
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else if (APoint is Self) then
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Result := TSegmentExtraData(APoint).Mark
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// Check for non-nil object with a non-nil TSegmentExtraData (APoint)
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else if (APoint is TGPSObj) and Assigned(TGPSObj(APoint).ExtraData) and
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(TGPSObj(APoint).ExtraData is Self)
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then
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Result := TSegmentExtraData(TGPSObj(APoint).ExtraData).Mark
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else // None of the above
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Result := smNone;
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end;
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{ TDrawingExtraData }
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constructor TDrawingExtraData.Create(aId: integer);
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begin
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FId := aId;
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FColor := clRed;
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end;
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procedure TDrawingExtraData.SetColor(AValue: TColor);
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begin
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if FColor = AValue then Exit;
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FColor := AValue;
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end;
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{ TTrackExtraData }
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procedure TTrackExtraData.SetWidth(AValue: Double);
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begin
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if AValue = FWidth then Exit;
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FWidth := abs(AValue);
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end;
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end.
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