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{*****************************************}
{ }
{ FastReport v2.3 }
{ Checkbox Add-In Object }
{ }
{ Copyright (c) 1998-99 by Tzyganenko A. }
{ }
{*****************************************}
unit LR_ChBox;
interface
{$I lr_vers.inc}
uses
Classes, SysUtils, LResources,
Graphics,GraphType, Controls, Forms, Dialogs,
Menus, LCLType, LCLIntf, LR_Class;
type
{ TfrCheckBoxObject }
TfrCheckBoxObject = class(TComponent)
public
Constructor Create(aOwner : TComponent); override;
end;
{ TfrCheckBoxView }
TfrCheckBoxView = class(TfrView)
private
fChecked: Boolean;
procedure DrawCheck(ARect: TRect; aChecked: Boolean);
public
constructor Create(AOwnerPage:TfrPage); override;
procedure Draw(aCanvas: TCanvas); override;
procedure Print(Stream: TStream); override;
procedure ExportData; override;
procedure DefinePopupMenu(Popup: TPopupMenu); override;
procedure Assign(Source: TPersistent); override;
procedure LoadFromStream(Stream: TStream); override;
procedure SaveToStream(Stream: TStream); override;
procedure LoadFromXML(XML: TLrXMLConfig; const Path: String); override;
procedure SaveToXML(XML: TLrXMLConfig; const Path: String); override;
published
property Checked : Boolean read fChecked write fChecked;
property DataField;
property FillColor;
property FrameColor;
property Frames;
property FrameStyle;
property FrameWidth;
property Script;
property Restrictions;
end;
implementation
{$R lr_checkbox.res}
uses LR_Utils, LR_Const;
var
lrBMPCheckBox : TBitMap;
procedure TfrCheckBoxView.DrawCheck(ARect: TRect; aChecked: Boolean);
procedure Line(x, y, x1, y1: Integer);
begin
Canvas.MoveTo(x, y);
Canvas.LineTo(x1, y1);
end;
begin
InflateRect(ARect, Round(-4 * ScaleX), Round(-4 * ScaleY));
with Canvas, ARect do
begin
Pen.Mode := pmCopy;
Pen.Style := psSolid;
Pen.Color := clBlack;
if aChecked then
begin
Pen.Color := clBlack;
Pen.Width := Round(3 * ScaleX);
Line(Left, Top, Right, Bottom);
Line(Left, Bottom, Right, Top);
end;
end;
end;
constructor TfrCheckBoxView.Create(AOwnerPage: TfrPage);
begin
inherited Create(AOwnerPage);
BeginUpdate;
try
Typ := gtAddIn;
FrameWidth := 2;
Frames:=frAllFrames;
Checked:=True;
BaseName := 'Check';
Finally
EndUpdate;
end;
end;
procedure TfrCheckBoxView.Draw(aCanvas: TCanvas);
var
IsChecked: Boolean;
begin
BeginDraw(aCanvas);
Memo1.Assign(Memo);
CalcGaps;
ShowBackground;
IsChecked := Self.Checked;
if Memo1.Count > 0 then
IsChecked := Memo1[0] = '1';
DrawCheck(DRect, IsChecked);
// DrawCheck(DRect, Self.Checked);
ShowFrame;
RestoreCoord;
end;
procedure TfrCheckBoxView.Print(Stream: TStream);
begin
BeginDraw(Canvas);
Memo1.Assign(Memo);
CurReport.InternalOnEnterRect(Memo1, Self);
frInterpretator.DoScript(Script);
if not Visible then Exit;
if Memo1.Count > 0 then
Memo1[0] := IntToStr(Trunc(Extended(frParser.Calc(Memo1[0]))));
Stream.Write(Typ, 1);
frWriteString(Stream, ClassName);
SaveToStream(Stream);
end;
procedure TfrCheckBoxView.ExportData;
var
s: String;
begin
inherited;
s := '';
if Self.Checked then
s := 'X';
CurReport.InternalOnExportText(x, y, s, Self);
end;
procedure TfrCheckBoxView.DefinePopupMenu(Popup: TPopupMenu);
begin
// no specific items in popup menu
if Popup=nil then;
end;
procedure TfrCheckBoxView.Assign(Source: TPersistent);
begin
inherited Assign(Source);
if Source is TfrCheckBoxView then
Self.Checked := TfrCheckBoxView(Source).Checked;
end;
procedure TfrCheckBoxView.LoadFromStream(Stream: TStream);
begin
inherited LoadFromStream(Stream);
Stream.Read(fChecked, SizeOf(fChecked));
end;
procedure TfrCheckBoxView.SaveToStream(Stream: TStream);
begin
inherited SaveToStream(Stream);
Stream.Write(fChecked, SizeOf(fChecked));
end;
procedure TfrCheckBoxView.LoadFromXML(XML: TLrXMLConfig; const Path: String);
begin
inherited LoadFromXML(XML, Path);
RestoreProperty('Checked',XML.GetValue(Path+'Data/Checked/Value',''));
end;
procedure TfrCheckBoxView.SaveToXML(XML: TLrXMLConfig; const Path: String);
begin
inherited SaveToXML(XML, Path);
XML.SetValue(Path+'Data/Checked/Value', GetSaveProperty('Checked'));
end;
{ TfrCheckBoxObject }
constructor TfrCheckBoxObject.Create(aOwner: TComponent);
begin
inherited Create(aOwner);
if not assigned(lrBMPCheckBox) {and not (csDesigning in ComponentState)} then
begin
lrBMPCheckBox := TBitMap.Create;
lrBMPCheckBox.LoadFromResourceName(HInstance, 'fr_checkbox');
frRegisterObject(TfrCheckBoxView, lrBMPCheckBox, sInsCheckBox, nil);
end;
end;
initialization
lrBMPCheckBox:=nil;
finalization
if Assigned(lrBMPCheckBox) then
FreeAndNil(lrBMPCheckBox);
end.
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