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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Color.Model;
interface
uses
Color.Rgb,
Integer._32;
type
TIndexColorModel = class(TObject)
public
function GetColor(Index: TInteger32): TRgbColor; virtual;
end;
TCyclingColorModel = class(TIndexColorModel)
protected
Colors: array of TRgbColor;
public
procedure AddColor(const Color: TRgbColor);
function GetColor(Index: TInteger32): TRgbColor; override;
end;
TFixedIndexesColorModel = class(TIndexColorModel)
protected
Colors: array of TRgbColor;
public
procedure AddColor(const Color: TRgbColor);
function GetColor(Index: TInteger32): TRgbColor; override;
procedure RemoveColor(Index: TInteger32); deprecated;
end;
implementation
uses
Color.Constants;
{ TIndexColorModel }
function TIndexColorModel.GetColor(Index: TInteger32): TRgbColor;
begin
Result := TNamedColor.White;
end;
{ TCyclingColorModel }
procedure TCyclingColorModel.AddColor(const Color: TRgbColor);
begin
SetLength(Colors, Length(Colors) + 1);
Colors[High(Colors)] := Color;
end;
function TCyclingColorModel.GetColor(Index: TInteger32): TRgbColor;
begin
Result := Colors[Index mod Length(Colors)];
end;
{ TFixedIndexesColorModel }
procedure TFixedIndexesColorModel.AddColor(const Color: TRgbColor);
begin
SetLength(Colors, Length(Colors) + 1);
Colors[High(Colors)] := Color;
end;
function TFixedIndexesColorModel.GetColor(Index: TInteger32): TRgbColor;
begin
Result := Colors[Index];
end;
procedure TFixedIndexesColorModel.RemoveColor(Index: TInteger32);
var
i: TInteger32;
begin
for i := Index to High(Colors) - 1 do
Colors[i] := Colors[i + 1];
SetLength(Colors, High(Colors));
end;
end.
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