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unit ceShapeBrushPenMarginsFrame;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics, Forms, Controls, StdCtrls, Dialogs, Spin, ExtCtrls,
TATypes, TATextElements,
ceSimplePenFrame, ceSimpleBrushFrame;
type
TChartShapeChangeEvent = procedure (AShape: TChartLabelShape) of object;
{ TChartShapeBrushPenMarginsFrame }
TChartShapeBrushPenMarginsFrame = class(TFrame)
cmbShape: TComboBox;
gbBackground: TGroupBox;
gbBorder: TGroupBox;
gbMargins: TGroupBox;
Panel1: TPanel;
seBottomMargin: TSpinEdit;
seLeftMargin: TSpinEdit;
seRightMargin: TSpinEdit;
seTopMargin: TSpinEdit;
procedure cmbShapeChange(Sender: TObject);
procedure seBottomMarginChange(Sender: TObject);
procedure seLeftMarginChange(Sender: TObject);
procedure seRightMarginChange(Sender: TObject);
procedure seTopMarginChange(Sender: TObject);
private
FOnChange: TNotifyEvent;
FOnShapeChange: TChartShapeChangeEvent;
FBrush: TBrush;
FPen: TChartPen;
FMargins: TChartLabelMargins;
FShape: TChartLabelShape;
FLockEvents: Integer;
FBrushFrame: TSimpleChartBrushFrame;
FPenFrame: TSimpleChartPenFrame;
procedure ChangeHandler(Sender: TObject);
procedure DoChange;
procedure DoShapeChanged(AShape: TChartLabelShape);
protected
procedure CalculatePreferredSize(var PreferredWidth, PreferredHeight: integer;
{%H-}WithThemeSpace: Boolean); override;
public
constructor Create(AOwner: TComponent); override;
procedure GetData(out AShape: TChartLabelShape; ABrush: TBrush;
APen: TChartPen; AMargins: TChartLabelMargins);
procedure Prepare(AShape: TChartLabelShape; ABrush: TBrush; APen: TChartPen;
AMargins: TChartLabelMargins);
property OnChange: TNotifyEvent read FOnChange write FOnChange;
property OnShapeChange: TChartShapeChangeEvent read FOnShapeChange write FOnShapeChange;
end;
implementation
{$R *.lfm}
uses
Math,
ceUtils;
{ TChartShapeBrushPenMarginsFrame }
constructor TChartShapeBrushPenMarginsFrame.Create(AOwner: TComponent);
begin
inherited;
cmbShape.DropdownCount := DEFAULT_DROPDOWN_COUNT;
FBrushFrame := TSimpleChartBrushFrame.Create(self);
FBrushFrame.Name := '';
FBrushFrame.BorderSpacing.Around := 8;
FBrushFrame.Align := alClient;
FBrushFrame.OnChange := @ChangeHandler;
FBrushFrame.AutoSize := true;
FBrushFrame.Parent := gbBackground;
gbBackground.AutoSize := true;
gbBackground.Caption := 'Background';
FPenFrame := TSimpleChartPenFrame.Create(self);
FPenFrame.Name := '';
FPenFrame.BorderSpacing.Around := 8;
FPenFrame.Align := alClient;
FPenFrame.OnChange := @ChangeHandler;
FPenFrame.AutoSize := true;
FPenFrame.Parent := gbBorder;
gbBorder.AutoSize := true;
gbBorder.Caption := 'Border';
Panel1.AutoSize := true;
end;
procedure TChartShapeBrushPenMarginsFrame.CalculatePreferredSize(
var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean);
var
w: Integer = 0;
h: Integer = 0;
begin
PreferredHeight := cmbShape.Height +
gbBorder.BorderSpacing.Top + gbBorder.Height +
gbMargins.BorderSpacing.Top + gbMargins.Height;
gbBorder.GetPreferredSize(w, h);
PreferredWidth :=
gbBackground.Width + w + FPenFrame.BorderSpacing.Around*2 +
Max(gbBackground.BorderSpacing.Right, gbBorder.BorderSpacing.Left);
end;
procedure TChartShapeBrushPenMarginsFrame.ChangeHandler(Sender: TObject);
begin
if FLockEvents = 0 then
begin
if (Sender is TChartPen) then
FPen := TChartPen(Sender)
else if (Sender is TBrush) then
FBrush := TBrush(Sender);
cmbShape.Enabled := FPen.EffVisible or (FBrush.Style <> bsClear);
gbMargins.Enabled := cmbShape.Enabled;
DoChange;
end;
end;
procedure TChartShapeBrushPenMarginsFrame.cmbShapeChange(Sender: TObject);
begin
DoShapeChanged(TChartLabelShape(cmbShape.ItemIndex));
end;
procedure TChartShapeBrushPenMarginsFrame.DoChange;
begin
if (FLockEvents = 0) and Assigned(FOnChange) then
FOnChange(Self);
end;
procedure TChartShapeBrushPenMarginsFrame.DoShapeChanged(AShape: TChartLabelShape);
begin
if (FLockEvents = 0) and Assigned(FOnShapeChange) then
FOnShapeChange(AShape);
end;
procedure TChartShapeBrushPenMarginsFrame.seBottomMarginChange(Sender: TObject);
begin
FMargins.Bottom := seBottomMargin.Value;
DoChange;
end;
procedure TChartShapeBrushPenMarginsFrame.seLeftMarginChange(Sender: TObject);
begin
FMargins.Left := seLeftMargin.Value;
DoChange;
end;
procedure TChartShapeBrushPenMarginsFrame.seRightMarginChange(Sender: TObject);
begin
FMargins.Right := seRightMargin.Value;
DoChange;
end;
procedure TChartShapeBrushPenMarginsFrame.seTopMarginChange(Sender: TObject);
begin
FMargins.Top := seTopMargin.Value;
DoChange;
end;
procedure TChartShapeBrushPenMarginsFrame.GetData(out AShape: TChartLabelShape;
ABrush: TBrush; APen: TChartPen; AMargins: TChartLabelMargins);
begin
AShape := TChartLabelShape(cmbShape.ItemIndex);
if HandleAllocated then
begin
FBrushFrame.GetData(ABrush);
FPenFrame.GetData(APen);
APen.Style := psSolid;
end;
AMargins.Top := seTopMargin.Value;
AMargins.Left := seLeftMargin.Value;
AMargins.Right := seRightMargin.Value;
AMargins.Bottom := seBottomMargin.Value;
end;
procedure TChartShapeBrushPenMarginsFrame.Prepare(AShape: TChartLabelShape;
ABrush: TBrush; APen: TChartPen; AMargins: TChartLabelMargins);
begin
inc(FLockEvents);
FShape := AShape;
FBrush := ABrush;
FPen := APen;
FMargins := AMargins;
cmbShape.ItemIndex := ord(AShape);
cmbShape.Enabled := APen.EffVisible or (ABrush.Style <> bsClear);
gbMargins.Enabled := cmbShape.Enabled;
FBrushFrame.Prepare(ABrush);
FPenFrame.Prepare(APen);
seTopMargin.Value := AMargins.Top;
seLeftMargin.Value := AMargins.Left;
seRightMargin.Value := AMargins.Right;
seBottomMargin.Value := AMargins.Bottom;
dec(FLockEvents);
end;
end.
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