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{*******************************************}
{ }
{ FastReport v2.3 }
{ Barcode Add-in object }
{ }
{ Copyright (c) 1998-99 by Tzyganenko A. }
{ }
// Barcode Component
// Version 1.3
// Copyright 1998-99 Andreas Schmidt and friends
// Freeware
// for use with Delphi 2/3/4
// this component is for private use only!
// i am not responsible for wrong barcodes
// Code128C not implemented
// bug-reports, enhancements:
// mailto:shmia@bizerba.de or
// a_j_schmidt@rocketmail.com
{ Fr_BarC: Guilbaud Olivier }
{ golivier@worldnet.fr }
{ Ported to FR2.3: Alexander Tzyganenko }
{ }
{*******************************************}
unit LR_BarC;
{$I lr_vers.inc}
interface
uses
Classes, SysUtils,
LCLPlatformDef, InterfaceBase, Graphics, Controls, Forms, Dialogs,
Buttons, StdCtrls, Menus, Barcode, ExtCtrls, ButtonPanel,
LCLType, LR_Class;
{.$DEFINE BC_1_25} //For Barcode version 1.25 actually in debug
type
{$IFDEF BC_1_25}
TBarCode=Class(TAsBarCode);
{$ENDIF}
{ TfrBarCodeObject }
TfrBarCodeObject = class(TComponent) // fake component
public
constructor Create(aOwner : TComponent); override;
end;
TfrBarCode = packed record
cCheckSum : Boolean;
cShowText : Boolean;
cCadr : Boolean;
cBarType : TBarcodeType;
cModul : Integer;
cRatio : Double;
cAngle : Double;
end;
{ TfrCustomBarCodeView }
TfrCustomBarCodeView = class(TfrView)
private
BarC: TBarCode;
FText: string;
function GetAngle: Double;
function GetBarType: TBarcodeType;
function GetCheckSum: Boolean;
function GetShowText: Boolean;
function GetZoom: Double;
procedure SetAngle(AValue: Double);
procedure SetBarType(const AValue: TBarcodeType);
procedure SetCheckSum(const AValue: Boolean);
procedure SetShowText(const AValue: Boolean);
procedure SetZoom(const AValue: Double);
function CreateBarcode: TBitmap;
function CreateLabelFont(aCanvas: TCanvas): TFont;
procedure DrawLabel(aCanvas: TCanvas; R: TRect);
public
Param: TfrBarCode;
constructor Create(AOwnerPage:TfrPage);override;
destructor Destroy; override;
procedure Assign(Source: TPersistent); override;
function GenerateBitmap: TBitmap; virtual;
procedure LoadFromStream(Stream: TStream); override;
procedure SaveToStream(Stream: TStream); override;
procedure Draw(aCanvas: TCanvas); override;
procedure Print(Stream: TStream); override;
procedure DefinePopupMenu({%H-}Popup: TPopupMenu); override;
procedure LoadFromXML(XML: TLrXMLConfig; const Path: String); override;
procedure SaveToXML(XML: TLrXMLConfig; const Path: String); override;
property CheckSum : Boolean read GetCheckSum write SetCheckSum;
property BarType : TBarcodeType read GetBarType write SetBarType;
property ShowText : Boolean read GetShowText write SetShowText;
property Zoom : Double read GetZoom write SetZoom;
property Angle: Double read GetAngle write SetAngle;
end;
TfrBarcodeView = class(TfrCustomBarcodeView)
published
property CheckSum;
property BarType;
property ShowText;
property Zoom;
property Angle;
property Memo;
property Frames;
property FrameColor;
property FrameStyle;
property FrameWidth;
property Restrictions;
end;
{ TfrBarCodeForm }
TfrBarCodeForm = class(TfrObjEditorForm)
ButtonPanel1: TButtonPanel;
edZoom: TEdit;
labZoom: TLabel;
M1: TEdit;
Label1: TLabel;
cbType: TComboBox;
Label2: TLabel;
Image1: TImage;
Panel1: TPanel;
DBBtn: TSpeedButton;
VarBtn: TSpeedButton;
GroupBox1: TGroupBox;
ckCheckSum: TCheckBox;
ckViewText: TCheckBox;
GroupBox2: TGroupBox;
RB1: TRadioButton;
RB2: TRadioButton;
RB3: TRadioButton;
RB4: TRadioButton;
procedure FormClose(Sender: TObject; var {%H-}CloseAction: TCloseAction);
procedure FormCreate(Sender: TObject);
procedure VarBtnClick(Sender: TObject);
procedure DBBtnClick(Sender: TObject);
procedure bOkClick(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure edZoomKeyPress(Sender: TObject; var Key: char);
public
procedure ShowEditor(t: TfrView); override;
end;
implementation
{$R *.lfm}
uses LR_Var, LR_Flds, LR_Const, LR_Utils;
var
frBarCodeForm: TfrBarCodeForm;
const
cbDefaultText ='12345678';
bcNames: array[bcCode_2_5_interleaved..{$IFNDEF BC_1_25}bcCodeEAN13{$ELSE}bcCodeEAN128C{$ENDIF}, 0..1] of string =
(('2_5_interleaved', 'N'),
('2_5_industrial', 'N'),
('2_5_matrix', 'N'),
('Code39', 'A'),
('Code39 Extended', 'A'),
('Code128A', 'A'),
('Code128B', 'A'),
('Code128C', 'N'),
('Code93', 'A'),
('Code93 Extended', 'A'),
('MSI', 'N'),
('PostNet', 'N'),
('Codebar', 'A'),
('EAN8', 'N'),
('EAN13', 'N')
{$IFDEF BC_1_25}
,
('UPC A','N'),
('UPC E0','N'),
('UPC E1','N'),
('UPC SUPP 2','N'),
('UPC SUPP 5','N'),
('EAN128A','A'),
('EAN128B','A'),
('EAN128C','N')
{$ENDIF}
);
defaultFontSize = 10;
{$HINTS OFF}
{$NOTES OFF}
function isNumeric(St: String): Boolean;
var
{%H-}R: Double;
E: Integer;
begin
Val(St, R, E);
Result := (E = 0);
end;
{$NOTES ON}
{$HINTS ON}
function TfrCustomBarCodeView.GetBarType: TBarcodeType;
begin
Result:=Param.cBarType;
end;
function TfrCustomBarCodeView.GetAngle: Double;
begin
Result := Param.cAngle;
end;
function TfrCustomBarCodeView.GetCheckSum: Boolean;
begin
Result:=Param.cCheckSum;
end;
function TfrCustomBarCodeView.GetShowText: Boolean;
begin
Result:=Param.cShowText;
end;
function TfrCustomBarCodeView.GetZoom: Double;
begin
Result:=Param.cRatio;
end;
procedure TfrCustomBarCodeView.SetAngle(AValue: Double);
begin
if (Param.cAngle<>AValue) and
((AValue=0.0) or (AValue=90.0) or (AValue=180.0) or (AValue=270.0)) then
begin
BeforeChange;
Param.cAngle:=AValue;
AfterChange;
end;
end;
procedure TfrCustomBarCodeView.SetBarType(const AValue: TBarcodeType);
begin
if Param.cBarType<>AValue then
begin
BeforeChange;
Param.cBarType:=aValue;
AfterChange;
end;
end;
procedure TfrCustomBarCodeView.SetCheckSum(const AValue: Boolean);
begin
if Param.cCheckSum<>AValue then
begin
BeforeChange;
Param.cCheckSum:=aValue;
AfterChange;
end;
end;
procedure TfrCustomBarCodeView.SetShowText(const AValue: Boolean);
begin
if Param.cShowText<>AValue then
begin
BeforeChange;
Param.cShowText:=aValue;
AfterChange;
end;
end;
procedure TfrCustomBarCodeView.SetZoom(const AValue: Double);
begin
if (Param.cRatio<>AValue) and
((AValue>=1.0)and(Avalue<=4.0)) then
begin
BeforeChange;
Param.cRatio:=aValue;
AfterChange;
end;
end;
function TfrCustomBarCodeView.CreateBarcode: TBitmap;
begin
Result := nil;
if Trim(Memo.Text) = '' then
Exit;
{Assign Barcode text}
Memo1.Assign(Memo);
if (Memo1.Text <> '') and (pos('[',Memo1.Strings[0])=0) and
((bcNames[Param.cBarType, 1] = 'A') or IsNumeric(Memo1.Strings[0]) or
Barc.BarcodeTypeChecked(Param.cBarType) ) then
begin
BarC.Text := Memo1.Strings[0];
BarC.Checksum := Param.cCheckSum;
end
else
begin
BarC.Text := cbDefaultText;
BarC.Checksum := true;
end;
if Trim(BarC.Text)='0' then Exit;
{Barcode Properties}
BarC.Left:= 0;
BarC.Top := 0;
BarC.Typ := Param.cBarType;
BarC.Angle := Param.cAngle;
BarC.Ratio := 2; // param.cRatio <>2 renders some codes unreadable
BarC.Modul := 1; // param.cModul
{$IFDEF BC_1_25}
BarC.ShowTextPosition:=stpBottomCenter;
BarC.ShowText := bcoNone;
if FillColor=clNone then
BarC.Color:=clWhite
else
BarC.Color:=FillColor;
{$ELSE}
BarC.ShowText:=False;
{$ENDIF}
{Barcode width is determined by type of barcode and text. Update
object dimensions to suit barcode}
if (Param.cAngle = 90) or (Param.cAngle = 270) then
dy := BarC.Width
else
dx := BarC.Width;
if (Param.cAngle = 90) or (Param.cAngle = 270) then
BarC.Height := dx
else
BarC.Height := dy;
if (BarC.Typ=bcCodePostNet) and (Param.cAngle=0) then
begin
BarC.Top:=BarC.Height;
BarC.Height:=-BarC.Height;
end;
if Param.cAngle = 90 then
begin
BarC.Top:= Round(Height);
BarC.Left:=0;
end
else
if Param.cAngle = 180 then
begin
BarC.Top:= dy;
BarC.Left:= dx;
end
else
if Param.cAngle = 270 then
begin
BarC.Top:= 0;
BarC.Left:= dx;
end;
Result:=TBitMap.Create;
Result.Width:=dx;
Result.Height:=dy;
Result.Canvas.Brush.Style:=bsSolid;
Result.Canvas.Brush.Color:=clWhite;
Result.Canvas.FillRect(Rect(0,0,dx,dy));
try
BarC.DrawBarcode(Result.Canvas);
if BarC.Checksum then
FText := BarC.CodeText
else
FText := BarC.Text;
except on E: Exception do
FText := E.Message
end;
end;
function TfrCustomBarCodeView.CreateLabelFont(aCanvas: TCanvas) :TFont;
begin
with aCanvas do
begin
Result := TFont.Create;
Result.Assign(aCanvas.Font);
Result.Color := clBlack;
Result.Name := 'Arial';
Result.Style := [];
Result.Size := -defaultFontSize;
if Param.cAngle = 90 then
Result.Orientation := 900
else
if Param.cAngle = 180 then
Result.Orientation := 1800
else
if Param.cAngle = 270 then
Result.Orientation := 2700
else
Result.Orientation := 0;
end;
end;
procedure TfrCustomBarCodeView.DrawLabel(aCanvas: TCanvas; R: TRect);
var fs: integer;
begin
if Param.cShowText then
begin
with aCanvas do
begin
fs := Font.Height;
if Param.cAngle = 0 then
begin
Brush.Color:=clWhite;
Brush.Style:=bsSolid;
FillRect(Rect(R.Left,R.Top + dy-fs ,R.Right, R.Bottom));
TextOut(R.Left + (dx - TextWidth(FText)) div 2, R.Top + dy - fs, FText);
end
else
if Param.cAngle = 90 then
begin
Brush.Color:=clWhite;
Brush.Style:=bsSolid;
FillRect(Rect(R.Left + dx - fs,R.Top,R.Right, R.Bottom));
Font.Orientation := 900;
TextOut(R.Right - fs,R.Bottom - (dy - TextWidth(FText)) div 2, FText)
end
else
if Param.cAngle = 180 then
begin
Brush.Color:=clWhite;
Brush.Style:=bsSolid;
FillRect(Rect(R.Left,R.Top,R.Right,R.Top + fs));
Font.Orientation := 1800;
TextOut(R.left + (dx + TextWidth(FText)) div 2, R.Top + fs, FText);
end
else
begin
Brush.Color:=clWhite;
Brush.Style:=bsSolid;
Font.Orientation := 2700;
FillRect(Rect(R.Left,R.Top,R.Left + fs,R.Bottom));
if (WidgetSet.LCLPlatform = lpGtk2) and IsPrinting then
TextOut(R.Left + fs, R.Top + (dy -TextWidth(FText)) div 2, FText)
end;
end;
end;
end;
constructor TfrCustomBarCodeView.Create(AOwnerPage: TfrPage);
begin
inherited Create(AOwnerPage);
BarC := TBarCode.Create(nil);
Param.cCheckSum := True;
Param.cShowText := True;
Param.cCadr := False;
Param.cBarType := bcCode39;
Param.cModul := 2;
Param.cRatio := 1;
Param.cAngle := 0;
Memo.Add(cbDefaultText);
Typ := gtAddIn;
BaseName := 'Bar';
end;
destructor TfrCustomBarCodeView.Destroy;
begin
BarC.Free;
inherited Destroy;
end;
procedure TfrCustomBarCodeView.Assign(Source: TPersistent);
begin
inherited Assign(Source);
if Source is TfrCustomBarCodeView then
Param := TfrCustomBarCodeView(Source).Param;
end;
function TfrCustomBarCodeView.GenerateBitmap: TBitmap;
var
R: TRect;
barcodeFont: TFont;
oldFont: TFont;
begin
Result := CreateBarcode;
R := Rect(0,0, Result.Width,Result.Height);
barcodeFont := CreateLabelFont(Result.Canvas);
try
oldFont := Result.Canvas.Font;
Result.Canvas.Font := barcodeFont;
DrawLabel(Result.Canvas,r)
finally
Result.Canvas.Font := oldFont;
barcodeFont.Free
end;
end;
procedure TfrCustomBarCodeView.LoadFromStream(Stream:TStream);
begin
inherited LoadFromStream(Stream);
Stream.Read(Param, SizeOf(Param));
end;
procedure TfrCustomBarCodeView.SaveToStream(Stream:TStream);
begin
inherited SaveToStream(Stream);
Stream.Write(Param, SizeOf(Param));
end;
procedure TfrCustomBarCodeView.Draw(aCanvas:TCanvas);
var
Bmp : TBitMap;
R: TRect;
fh: integer;
barcodeFont: TFont;
oldFont: TFont;
begin
BeginDraw(aCanvas);
Bmp := CreateBarcode;
if Bmp <> nil then
try
// dx/dy is calculated in CreateBarCode using as base
// barcdode type, angle, zoom and data
if (Param.cAngle = 90) or (Param.cAngle = 270) then
dy := round(dy * param.cRatio)
else
dx := round(dx * Param.cRatio);
CalcGaps;
ShowBackground;
if Param.cShowText then
begin
barcodeFont := CreateLabelFont(aCanvas);
try
oldFont := aCanvas.Font;
aCanvas.Font := barcodeFont;
if not IsPrinting then
begin
if (Param.cAngle = 90) or (Param.cAngle = 270) then
ACanvas.Font.Height := -Round(ACanvas.Font.Size * ACanvas.Font.PixelsPerInch / 72 * ScaleX)
else
ACanvas.Font.Height := -Round(ACanvas.Font.Size * ACanvas.Font.PixelsPerInch / 72 * ScaleY);
fh := Round(aCanvas.Font.Height);
end
else
fh := aCanvas.Font.Height;
if (Param.cAngle = 90) then
R := Rect(DRect.Left,DRect.Top,
DRect.Right - fh,
DRect.Bottom)
else
if (Param.cAngle = 180) then
R := Rect(DRect.Left,DRect.Top + fh,
DRect.Right ,
DRect.Bottom)
else
if (Param.cAngle = 270) then
R := Rect(DRect.Left + fh,
DRect.Top,
DRect.Right,
DRect.Bottom)
else
R := Rect(DRect.Left,DRect.Top,
DRect.Right ,
DRect.Bottom - fh);
aCanvas.StretchDraw(R,Bmp);
DrawLabel(aCanvas, DRect);
finally
aCanvas.Font := oldFont;
barcodeFont.Free
end;
end
else
aCanvas.StretchDraw(DRect,Bmp);
ShowFrame;
finally
Bmp.Free;
RestoreCoord;
end;
end;
procedure TfrCustomBarCodeView.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
if (Length(Memo1[0]) > 0) and (Pos('[',Memo1[0])<>0) then
Memo1[0] := frParser.Calc(Memo1[0]);
Stream.Write(Typ, 1);
frWriteString(Stream, ClassName);
SaveToStream(Stream);
end;
procedure TfrCustomBarCodeView.DefinePopupMenu(Popup: TPopupMenu);
begin
// no specific items in popup menu
end;
procedure TfrCustomBarCodeView.LoadFromXML(XML: TLrXMLConfig; const Path: String);
begin
inherited LoadFromXML(XML, Path);
RestoreProperty('BarType',XML.GetValue(Path+'BarCode/BarType',''));
RestoreProperty('ShowText',XML.GetValue(Path+'BarCode/ShowText',''));
RestoreProperty('CheckSum',XML.GetValue(Path+'BarCode/CheckSum',''));
RestoreProperty('Zoom',XML.GetValue(Path+'BarCode/Zoom','1'));
RestoreProperty('Angle',XML.GetValue(Path+'BarCode/Angle','0'));
end;
procedure TfrCustomBarCodeView.SaveToXML(XML: TLrXMLConfig; const Path: String);
begin
inherited SaveToXML(XML, Path);
XML.SetValue(Path+'BarCode/BarType', GetSaveProperty('BarType'));
XML.SetValue(Path+'BarCode/ShowText', GetSaveProperty('ShowText'));
XML.SetValue(Path+'BarCode/CheckSum', GetSaveProperty('CheckSum'));
XML.SetValue(Path+'BarCode/Zoom', GetSaveProperty('Zoom'));
XML.SetValue(Path+'BarCode/Angle', GetSaveProperty('Angle'));
end;
//--------------------------------------------------------------------------
procedure TfrBarCodeForm.FormCreate(Sender: TObject);
var
i: TBarcodeType;
begin
CbType.Items.Clear;
for i := bcCode_2_5_interleaved to {$IFNDEF BC_1_25}bcCodeEAN13{$ELSE}bcCodeEAN128C{$ENDIF} do
cbType.Items.Add(bcNames[i, 0]);
cbType.ItemIndex := 0;
Caption := sBarCodeFormTitle;
Label1.Caption := sBarCodeFormCode;
Label2.Caption := sBarCodeFormType;
GroupBox1.Caption := sBarCodeFormOpts;
ckCheckSum.Caption := sBarCodeFormChksum;
ckViewText.Caption := sBarCodeFormReadable;
DBBtn.Hint := sBarCodeFormDbFld;
VarBtn.Hint := sBarCodeFormVar;
GroupBox2.Caption := sBarCodeFormRotate;
labZoom.Caption:=sBarCodeZoom;
end;
procedure TfrBarCodeForm.FormClose(Sender: TObject;
var CloseAction: TCloseAction);
begin
if ModalResult = mrOk then
bOkClick(nil);
end;
procedure TfrBarCodeForm.FormActivate(Sender: TObject);
begin
M1.SetFocus;
end;
procedure TfrBarCodeForm.edZoomKeyPress(Sender: TObject; var Key: char);
begin
If (Key>#31) and not (Key in ['0'..'9','.']) then {AJW}
Key:=#0;
end;
procedure TfrBarCodeForm.ShowEditor(t:TfrView);
var
tmp:Double;
begin
if t.Memo.Count > 0 then
M1.Text := t.Memo.Strings[0];
with t as TfrBarCodeView do
begin
cbType.ItemIndex := ord(Param.cBarType);
ckCheckSum.checked := Param.cCheckSum;
ckViewText.Checked := Param.cShowText;
if Param.cAngle = 0 then
RB1.Checked := True
else if Param.cAngle = 90 then
RB2.Checked := True
else if Param.cAngle = 180 then
RB3.Checked := True
else
RB4.Checked := True;
edZoom.Text:=SysUtils.Format('%.1f',[Param.cRatio]);
if ShowModal = mrOk then
begin
Memo.Clear;
Memo.Add(M1.Text);
CheckSum := ckCheckSum.Checked;
ShowText := ckViewText.Checked;
BarType := TBarcodeType(cbType.ItemIndex);
tmp := StrToFloatDef(edZoom.Text,1);
if tmp<1.0 then
tmp:=1.0;
Zoom := tmp;
if RB1.Checked then
Angle := 0
else if RB2.Checked then
Angle := 90
else if RB3.Checked then
Angle := 180
else
Angle := 270;
end;
end;
end;
procedure TfrBarCodeForm.VarBtnClick(Sender: TObject);
begin
frVarForm := TfrVarForm.Create(nil);
with frVarForm do
if ShowModal = mrOk then
if SelectedItem <> '' then
M1.Text := '[' + SelectedItem + ']';
frVarForm.Free;
M1.SetFocus;
end;
procedure TfrBarCodeForm.DBBtnClick(Sender: TObject);
begin
frFieldsForm := TfrFieldsForm.Create(nil);
with frFieldsForm do
if ShowModal = mrOk then
if DBField <> '' then
M1.Text := '[' + DBField + ']';
frFieldsForm.Free;
M1.SetFocus;
end;
procedure TfrBarCodeForm.bOkClick(Sender: TObject);
var
bc: TBarCode;
Bmp: TBitmap;
begin
Bmp := nil;
bc := TBarCode.Create(nil);
try
if Pos('[',M1.Text) <> 0 then
begin
bc.Text := cbDefaultText;
bc.checksum := true
end
else
begin
bc.Text := M1.Text;
bc.CheckSum := ckCheckSum.Checked;
end;
bc.Ratio := StrToFloatDef(edZoom.Text,1);
bc.Typ := TBarcodeType(cbType.ItemIndex);
Bmp := TBitmap.Create;
Bmp.Width := 16; Bmp.Height := 16;
try
Bmp.Canvas.Brush.Style:=bsSolid;
Bmp.Canvas.Brush.Color:=clWhite;
Bmp.Canvas.FillRect(Rect(0,0,Bmp.Width,Bmp.Height));
bc.DrawBarcode(Bmp.Canvas);
except
MessageDlg(sBarcodeError,mtError,[mbOk],0);
ModalResult := 0;
end;
finally
Bmp.Free;
bc.Free;
end;
end;
procedure InitializeBarcAddin;
begin
if not assigned(frBarCodeForm) {and not (csDesigning in ComponentState)} then
begin
frBarCodeForm := TfrBarCodeForm.Create(nil);
frSetAddinEditor(TfrBarcodeView, frBarcodeForm);
frSetAddinIcon(TfrBarcodeView, frBarCodeForm.Image1.Picture.Bitmap);
frSetAddinHint(TfrBarcodeView, sInsBarcode);
end;
end;
{ TfrBarCodeObject }
constructor TfrBarCodeObject.Create(aOwner: TComponent);
begin
inherited Create(aOwner);
InitializeBarcAddin;
end;
initialization
frBarcodeForm := nil;
frRegisterObject(TfrBarCodeView, nil, '', nil, @InitializeBarcAddin);
finalization
if Assigned(frBarCodeForm) then
frBarCodeForm.Free;
end.
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