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unit cePointerFrame;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Forms, Controls, StdCtrls, ExtCtrls, Spin,
TATypes, TAChartCombos, TAGraph,
ceBrushFrame, cePenFrame;
type
{ TChartPointerFrame }
TChartPointerFrame = class(TFrame)
cbPointerStyle: TChartComboBox;
GroupBox1: TGroupBox;
gbPointerBrush: TGroupBox;
gbPointerPen: TGroupBox;
lblPointerSize: TLabel;
sePointerSize: TSpinEdit;
procedure cbPointerStyleChange(Sender: TObject);
procedure sePointerSizeChange(Sender: TObject);
private
FPointer: TSeriesPointer;
FPointerBrushFrame: TChartBrushFrame;
FPointerPenFrame: TChartPenFrame;
FOnChange: TNotifyEvent;
procedure ChangedHandler(Sender: TObject);
procedure DoChange;
protected
function GetChart: TChart;
public
constructor Create(AOwner: TComponent); override;
procedure Prepare(APointer: TSeriesPointer);
property OnChange: TNotifyEvent read FOnChange write FOnChange;
end;
implementation
{$R *.lfm}
type
TSeriesPointerAccess = class(TSeriesPointer);
constructor TChartPointerFrame.Create(AOwner: TComponent);
begin
inherited;
cbPointerStyle.DropdownCount := DEFAULT_DROPDOWN_COUNT;
FPointerBrushFrame := TChartBrushFrame.Create(Self);
FPointerBrushFrame.Name := '';
FPointerBrushFrame.Align := alClient;
FPointerBrushFrame.AutoSize := true;
FPointerBrushFrame.BorderSpacing.Around := 8;
FPointerBrushFrame.OnChange := @ChangedHandler;
FPointerBrushFrame.Parent := gbPointerBrush;
gbPointerBrush.Caption := 'Fill';
gbPointerBrush.AutoSize := true;
FPointerPenFrame := TChartPenFrame.Create(self);
FPointerPenFrame.Name := '';
FPointerPenFrame.Align := alClient;
FPointerPenFrame.AutoSize := true;
FPointerPenFrame.borderspacing.Around := 8;
FPointerPenFrame.OnChange := @ChangedHandler;
FPointerPenFrame.Parent := gbPointerPen;
gbPointerPen.Caption := 'Border';
gbPointerPen.AutoSize := true;
AutoSize := true;
end;
procedure TChartPointerFrame.cbPointerStyleChange(Sender: TObject);
begin
FPointer.Style := cbPointerStyle.PointerStyle;
DoChange;
end;
procedure TChartPointerFrame.ChangedHandler(Sender: TObject);
begin
DoChange;
end;
procedure TChartPointerFrame.sePointerSizeChange(Sender: TObject);
begin
FPointer.HorizSize := sePointerSize.Value;
FPointer.VertSize := sePointerSize.Value;
DoChange;
end;
procedure TChartPointerFrame.DoChange;
begin
if Assigned(FOnChange) then FOnChange(FPointer);
end;
function TChartPointerFrame.GetChart: TChart;
begin
Result := TSeriesPointerAccess(FPointer).GetOwner as TChart;
end;
procedure TChartPointerFrame.Prepare(APointer: TSeriesPointer);
begin
FPointer := APointer;
cbPointerStyle.PointerStyle := APointer.Style;
sePointerSize.Value := APointer.HorizSize;
FPointerBrushFrame.Prepare(APointer.Brush);
FPointerPenFrame.Prepare(APointer.Pen);
end;
end.
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