unit uViewTextoRecibo;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, uViewBase, DB, uDADataTable, StdCtrls, ActnList, ComCtrls,
  DBCtrls, cxControls, cxContainer, cxEdit, cxTextEdit, cxMemo, cxRichEdit,
  cxDBRichEdit, cxDBEdit, ToolWin, ImgList, ExtCtrls, uBizRecibosCliente;

{    SysUtils, Windows, Messages, Classes, Graphics, Controls,
  Forms, Dialogs, StdCtrls, Buttons, ExtCtrls, Menus, ComCtrls, ClipBrd,
  ToolWin, ActnList, ImgList;
}


type
  IViewReciboCliente = interface
  ['{683E68DE-0AE8-4ADF-8D7B-BB5F4D1CBFDF}']
    function GetRecibo: IBizRecibosCliente;
    procedure SetRecibo(const Value: IBizRecibosCliente);
    property Recibo: IBizRecibosCliente read GetRecibo write SetRecibo;
  end;

  TfrViewTextoRecibo = class(TfrViewBase, IViewReciboCliente)
    DADataSource: TDADataSource;
    ToolbarImages: TImageList;
    ActionList2: TActionList;
    EditUndoCmd: TAction;
    EditCutCmd: TAction;
    EditCopyCmd: TAction;
    EditPasteCmd: TAction;
    EditFontCmd: TAction;
    StandardToolBar: TToolBar;
    CutButton: TToolButton;
    CopyButton: TToolButton;
    PasteButton: TToolButton;
    UndoButton: TToolButton;
    ToolButton10: TToolButton;
    FontName: TComboBox;
    ToolButton11: TToolButton;
    FontSize: TEdit;
    UpDown1: TUpDown;
    ToolButton2: TToolButton;
    BoldButton: TToolButton;
    ItalicButton: TToolButton;
    UnderlineButton: TToolButton;
    ToolButton16: TToolButton;
    LeftAlign: TToolButton;
    CenterAlign: TToolButton;
    RightAlign: TToolButton;
    ToolButton20: TToolButton;
    BulletsButton: TToolButton;
    Ruler: TPanel;
    FirstInd: TLabel;
    LeftInd: TLabel;
    RulerLine: TBevel;
    RightInd: TLabel;
    Bevel1: TBevel;
    FontDialog1: TFontDialog;
    StatusBar: TStatusBar;
    Editor: TDBRichEdit;
    actCliente: TAction;
    ToolButton3: TToolButton;
    actImporte: TAction;
    actFecha: TAction;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;

    procedure SelectionChange(Sender: TObject);
//    procedure FormCreate(Sender: TObject);
    procedure CustomViewCreate(Sender: TObject);
    procedure ShowHint(Sender: TObject);
    procedure FileNew(Sender: TObject);
    procedure FileOpen(Sender: TObject);
    procedure FileSave(Sender: TObject);
    procedure FileSaveAs(Sender: TObject);
    procedure FilePrint(Sender: TObject);
    procedure FileExit(Sender: TObject);
    procedure EditUndo(Sender: TObject);
    procedure EditCut(Sender: TObject);
    procedure EditCopy(Sender: TObject);
    procedure EditPaste(Sender: TObject);
    procedure HelpAbout(Sender: TObject);
    procedure SelectFont(Sender: TObject);
    procedure RulerResize(Sender: TObject);
    procedure FormResize(Sender: TObject);
    procedure FormPaint(Sender: TObject);
    procedure BoldButtonClick(Sender: TObject);
    procedure ItalicButtonClick(Sender: TObject);
    procedure FontSizeChange(Sender: TObject);
    procedure AlignButtonClick(Sender: TObject);
    procedure FontNameChange(Sender: TObject);
    procedure UnderlineButtonClick(Sender: TObject);
    procedure BulletsButtonClick(Sender: TObject);
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
    procedure RulerItemMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure RulerItemMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure FirstIndMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure LeftIndMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure RightIndMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
//    procedure FormShow(Sender: TObject);
    procedure CustomViewShow(Sender: TObject);
    procedure RichEditChange(Sender: TObject);
    procedure SwitchLanguage(Sender: TObject);
    procedure ActionList2Update(Action: TBasicAction; var Handled: Boolean);
    procedure actClienteExecute(Sender: TObject);
    procedure actImporteExecute(Sender: TObject);
    procedure actFechaExecute(Sender: TObject);

  private
//    FFileName: string;
    FUpdating: Boolean;
    FDragOfs: Integer;
    FDragging: Boolean;
    function CurrText: TTextAttributes;
    procedure GetFontNames;
    procedure SetFileName(const FileName: String);
    procedure CheckFileSave;
    procedure SetupRuler;
    procedure SetEditRect;
    procedure UpdateCursorPos;
    procedure WMDropFiles(var Msg: TWMDropFiles); message WM_DROPFILES;
    procedure PerformFileOpen(const AFileName: string);
    procedure insertarCadena(pCadena: String);
    procedure SetModified(Value: Boolean); overload;
    procedure PrintButtonClick(Sender: TObject);

  protected
    FRecibo: IBizRecibosCliente;
    function GetRecibo: IBizRecibosCliente;
    procedure SetRecibo(const Value: IBizRecibosCliente);

  public
    property Recibo: IBizRecibosCliente read GetRecibo write SetRecibo;
  end;

var
  frViewTextoRecibo: TfrViewTextoRecibo;

implementation
{$R *.dfm}

uses RichEdit, ShellAPI;


resourcestring
  sSaveChanges = 'Save changes to %s?';
  sOverWrite = 'OK to overwrite %s';
  sUntitled = 'Sin titulo';
  sModified = 'Modificado';
  sColRowInfo = 'Linea: %3d   Columna: %3d';

const
  RulerAdj = 4/3;
  GutterWid = 6;

function EnumFontsProc(var LogFont: TLogFont; var TextMetric: TTextMetric;
  FontType: Integer; Data: Pointer): Integer; stdcall;
begin
  TStrings(Data).Add(LogFont.lfFaceName);
  Result := 1;
end;

procedure TfrViewTextoRecibo.ActionList2Update(Action: TBasicAction;
  var Handled: Boolean);
begin
 { Update the status of the edit commands }
  EditCutCmd.Enabled := Editor.SelLength > 0;
  EditCopyCmd.Enabled := EditCutCmd.Enabled;
  if Editor.HandleAllocated then
  begin
    EditUndoCmd.Enabled := Editor.Perform(EM_CANUNDO, 0, 0) <> 0;
    EditPasteCmd.Enabled := Editor.Perform(EM_CANPASTE, 0, 0) <> 0;
  end;
end;

procedure TfrViewTextoRecibo.AlignButtonClick(Sender: TObject);
begin
  if FUpdating then Exit;
  Editor.Paragraph.Alignment := TAlignment(TControl(Sender).Tag);
end;

procedure TfrViewTextoRecibo.BoldButtonClick(Sender: TObject);
begin
  if FUpdating then Exit;
  if BoldButton.Down then
    CurrText.Style := CurrText.Style + [fsBold]
  else
    CurrText.Style := CurrText.Style - [fsBold];
end;

procedure TfrViewTextoRecibo.BulletsButtonClick(Sender: TObject);
begin
  if FUpdating then Exit;
  Editor.Paragraph.Numbering := TNumberingStyle(BulletsButton.Down);
end;

procedure TfrViewTextoRecibo.EditCopy(Sender: TObject);
begin
  Editor.CopyToClipboard;
end;

procedure TfrViewTextoRecibo.EditCut(Sender: TObject);
begin
  Editor.CutToClipboard;
end;

procedure TfrViewTextoRecibo.EditPaste(Sender: TObject);
begin
  Editor.PasteFromClipboard;
end;

procedure TfrViewTextoRecibo.EditUndo(Sender: TObject);
begin
  with Editor do
    if HandleAllocated then SendMessage(Handle, EM_UNDO, 0, 0);
end;

procedure TfrViewTextoRecibo.FileExit(Sender: TObject);
begin
//  Close;
end;

procedure TfrViewTextoRecibo.FileNew(Sender: TObject);
begin
{
  SetFileName(sUntitled);
  Editor.Lines.Clear;
  Editor.Modified := False;
  SetModified(False);
}
end;

procedure TfrViewTextoRecibo.FileOpen(Sender: TObject);
begin
{
  CheckFileSave;
  if OpenDialog.Execute then
  begin
    PerformFileOpen(OpenDialog.FileName);
    Editor.ReadOnly := ofReadOnly in OpenDialog.Options;
  end;
}
end;

procedure TfrViewTextoRecibo.FilePrint(Sender: TObject);
begin
{
  if PrintDialog.Execute then
    Editor.Print(FFileName);
}
end;

procedure TfrViewTextoRecibo.FileSave(Sender: TObject);
begin
{
  if FFileName = sUntitled then
    FileSaveAs(Sender)
  else
  begin
    Editor.Lines.SaveToFile(FFileName);
    Editor.Modified := False;
    SetModified(False);
  end;
}
end;

procedure TfrViewTextoRecibo.FileSaveAs(Sender: TObject);
begin
{
  if SaveDialog.Execute then
  begin
    if FileExists(SaveDialog.FileName) then
      if MessageDlg(Format(sOverWrite, [SaveDialog.FileName]),
        mtConfirmation, mbYesNoCancel, 0) <> idYes then Exit;
    Editor.Lines.SaveToFile(SaveDialog.FileName);
    SetFileName(SaveDialog.FileName);
    Editor.Modified := False;
    SetModified(False);
  end;
}
end;

procedure TfrViewTextoRecibo.FirstIndMouseUp(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  FDragging := False;
  Editor.Paragraph.FirstIndent := Trunc((FirstInd.Left+FDragOfs-GutterWid) / RulerAdj);
  LeftIndMouseUp(Sender, Button, Shift, X, Y);
end;

procedure TfrViewTextoRecibo.FontNameChange(Sender: TObject);
begin
  if FUpdating then Exit;
  CurrText.Name := FontName.Items[FontName.ItemIndex];
end;

procedure TfrViewTextoRecibo.FontSizeChange(Sender: TObject);
begin
  if FUpdating then Exit;
  CurrText.Size := StrToInt(FontSize.Text);
end;

procedure TfrViewTextoRecibo.FormCloseQuery(Sender: TObject;
  var CanClose: Boolean);
begin
{
  try
    CheckFileSave;
  except
    CanClose := False;
  end;
}
    CanClose := True;
end;

procedure TfrViewTextoRecibo.FormPaint(Sender: TObject);
begin
  SetEditRect;
end;

procedure TfrViewTextoRecibo.FormResize(Sender: TObject);
begin
{
  SetEditRect;
  SelectionChange(Sender);
}
end;

procedure TfrViewTextoRecibo.HelpAbout(Sender: TObject);
begin
{
  with TAboutBox.Create(Self) do
  try
    ShowModal;
  finally
    Free;
  end;
}
end;

procedure TfrViewTextoRecibo.ItalicButtonClick(Sender: TObject);
begin
  if FUpdating then Exit;
  if ItalicButton.Down then
    CurrText.Style := CurrText.Style + [fsItalic]
  else
    CurrText.Style := CurrText.Style - [fsItalic];
end;

procedure TfrViewTextoRecibo.LeftIndMouseUp(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  FDragging := False;
  Editor.Paragraph.LeftIndent := Trunc((LeftInd.Left+FDragOfs-GutterWid) / RulerAdj)-Editor.Paragraph.FirstIndent;
  SelectionChange(Sender);
end;

procedure TfrViewTextoRecibo.PrintButtonClick(Sender: TObject);
begin
  inherited;
//
end;

procedure TfrViewTextoRecibo.RichEditChange(Sender: TObject);
begin
  SetModified(Editor.Modified);
end;

procedure TfrViewTextoRecibo.RightIndMouseUp(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  FDragging := False;
  Editor.Paragraph.RightIndent := Trunc((Ruler.ClientWidth-RightInd.Left+FDragOfs-2) / RulerAdj)-2*GutterWid;
  SelectionChange(Sender);
end;

procedure TfrViewTextoRecibo.RulerItemMouseDown(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
  FDragOfs := (TLabel(Sender).Width div 2);
  TLabel(Sender).Left := TLabel(Sender).Left+X-FDragOfs;
  FDragging := True;
end;

procedure TfrViewTextoRecibo.RulerItemMouseMove(Sender: TObject;
  Shift: TShiftState; X, Y: Integer);
begin
  if FDragging then
    TLabel(Sender).Left :=  TLabel(Sender).Left+X-FDragOfs
end;

procedure TfrViewTextoRecibo.RulerResize(Sender: TObject);
begin
  RulerLine.Width := Ruler.ClientWidth - (RulerLine.Left*2);
end;

procedure TfrViewTextoRecibo.SelectFont(Sender: TObject);
begin
  FontDialog1.Font.Assign(Editor.SelAttributes);
  if FontDialog1.Execute then
    CurrText.Assign(FontDialog1.Font);
  SelectionChange(Self);
  Editor.SetFocus;
end;

procedure TfrViewTextoRecibo.SelectionChange(Sender: TObject);
begin
  with Editor.Paragraph do
  try
    FUpdating := True;
    FirstInd.Left := Trunc(FirstIndent*RulerAdj)-4+GutterWid;
    LeftInd.Left := Trunc((LeftIndent+FirstIndent)*RulerAdj)-4+GutterWid;
    RightInd.Left := Ruler.ClientWidth-6-Trunc((RightIndent+GutterWid)*RulerAdj);
    BoldButton.Down := fsBold in Editor.SelAttributes.Style;
    ItalicButton.Down := fsItalic in Editor.SelAttributes.Style;
    UnderlineButton.Down := fsUnderline in Editor.SelAttributes.Style;
    BulletsButton.Down := Boolean(Numbering);
    FontSize.Text := IntToStr(Editor.SelAttributes.Size);
    FontName.Text := Editor.SelAttributes.Name;
    case Ord(Alignment) of
      0: LeftAlign.Down := True;
      1: RightAlign.Down := True;
      2: CenterAlign.Down := True;
    end;
    UpdateCursorPos;
  finally
    FUpdating := False;
  end;
end;

procedure TfrViewTextoRecibo.ShowHint(Sender: TObject);
begin
  if Length(Application.Hint) > 0 then
  begin
    StatusBar.SimplePanel := True;
    StatusBar.SimpleText := Application.Hint;
  end
  else StatusBar.SimplePanel := False;
end;

procedure TfrViewTextoRecibo.SwitchLanguage(Sender: TObject);
//var
//  Name : String;
//  Size : Integer;
begin
{
  if LoadNewResourceModule(TComponent(Sender).Tag) <> 0 then
  begin
    Name := FontName.Text;
    Size := StrToInt(FontSize.Text);
    ReinitializeForms;
    LanguageEnglish.Checked := LanguageEnglish = Sender;
    LanguageFrench.Checked  := LanguageFrench  = Sender;
    LanguageGerman.Checked  := LanguageGerman  = Sender;

    CurrText.Name := Name;
    CurrText.Size := Size;
    SelectionChange(Self);
    FontName.SelLength := 0;

    SetupRuler;
    if Visible then Editor.SetFocus;
  end;
}
end;

procedure TfrViewTextoRecibo.UnderlineButtonClick(Sender: TObject);
begin
  if FUpdating then Exit;
  if UnderlineButton.Down then
    CurrText.Style := CurrText.Style + [fsUnderline]
  else
    CurrText.Style := CurrText.Style - [fsUnderline];
end;

procedure TfrViewTextoRecibo.CustomViewCreate(Sender: TObject);
begin
  inherited;
  Application.OnHint := ShowHint;
//  OpenDialog.InitialDir := ExtractFilePath(ParamStr(0));
//  SaveDialog.InitialDir := OpenDialog.InitialDir;
//  SetFileName(sUntitled);
  GetFontNames;
  SetupRuler;
  SelectionChange(Self);

  CurrText.Name := DefFontData.Name;
  CurrText.Size := -MulDiv(DefFontData.Height, 72, Screen.PixelsPerInch);
{
  LanguageEnglish.Tag := ENGLISH;
  LanguageFrench.Tag := FRENCH;
  LanguageGerman.Tag := GERMAN;
  case SysLocale.DefaultLCID of
    ENGLISH: SwitchLanguage(LanguageEnglish);
    FRENCH: SwitchLanguage(LanguageFrench);
    GERMAN: SwitchLanguage(LanguageGerman);
  end;
}
end;

procedure TfrViewTextoRecibo.CustomViewShow(Sender: TObject);
begin
  inherited;
  UpdateCursorPos;
  DragAcceptFiles(Handle, True);
  RichEditChange(nil);
  Editor.DataSource.DataSet.Edit;
  Editor.SetFocus;
  { Check if we should load a file from the command line }
  if (ParamCount > 0) and FileExists(ParamStr(1)) then
    PerformFileOpen(ParamStr(1));
end;

procedure TfrViewTextoRecibo.CheckFileSave;
//var
//  SaveResp: Integer;
begin
{
  if not Editor.Modified then Exit;
  SaveResp := MessageDlg(Format(sSaveChanges, [FFileName]),
    mtConfirmation, mbYesNoCancel, 0);
  case SaveResp of
    idYes: FileSave(Self);
    idNo: {Nothing};
{    idCancel: Abort;
  end;
}
end;

function TfrViewTextoRecibo.CurrText: TTextAttributes;
begin
  if Editor.SelLength > 0 then Result := Editor.SelAttributes
  else Result := Editor.DefAttributes;
end;

procedure TfrViewTextoRecibo.GetFontNames;
var
  DC: HDC;
begin
  DC := GetDC(0);
  EnumFonts(DC, nil, @EnumFontsProc, Pointer(FontName.Items));
  ReleaseDC(0, DC);
  FontName.Sorted := True;
end;

procedure TfrViewTextoRecibo.PerformFileOpen(const AFileName: string);
begin
  Editor.Lines.LoadFromFile(AFileName);
  SetFileName(AFileName);
  Editor.SetFocus;
  Editor.Modified := False;
  SetModified(False);
end;

procedure TfrViewTextoRecibo.SetEditRect;
var
  R: TRect;
begin
  with Editor do
  begin
    R := Rect(GutterWid, 0, ClientWidth-GutterWid, ClientHeight);
    SendMessage(Handle, EM_SETRECT, 0, Longint(@R));
  end;
end;

procedure TfrViewTextoRecibo.SetFileName(const FileName: String);
begin
{
  FFileName := FileName;
  Caption := Format('%s - %s', [ExtractFileName(FileName), Application.Title]);
}
end;

procedure TfrViewTextoRecibo.SetModified(Value: Boolean);
begin
  if Value then StatusBar.Panels[1].Text := sModified
  else StatusBar.Panels[1].Text := '';
end;

procedure TfrViewTextoRecibo.SetupRuler;
var
  I: Integer;
  S: String;
begin
  SetLength(S, 201);
  I := 1;
  while I < 200 do
  begin
    S[I] := #9;
    S[I+1] := '|';
    Inc(I, 2);
  end;
  Ruler.Caption := S;
end;

procedure TfrViewTextoRecibo.UpdateCursorPos;
var
  CharPos: TPoint;
begin
  CharPos.Y := SendMessage(Editor.Handle, EM_EXLINEFROMCHAR, 0,
    Editor.SelStart);
  CharPos.X := (Editor.SelStart -
    SendMessage(Editor.Handle, EM_LINEINDEX, CharPos.Y, 0));
  Inc(CharPos.Y);
  Inc(CharPos.X);
  StatusBar.Panels[0].Text := Format(sColRowInfo, [CharPos.Y, CharPos.X]);
end;

procedure TfrViewTextoRecibo.WMDropFiles(var Msg: TWMDropFiles);
var
  CFileName: array[0..MAX_PATH] of Char;
begin
  try
    if DragQueryFile(Msg.Drop, 0, CFileName, MAX_PATH) > 0 then
    begin
      CheckFileSave;
      PerformFileOpen(CFileName);
      Msg.Result := 0;
    end;
  finally
    DragFinish(Msg.Drop);
  end;
end;

procedure TfrViewTextoRecibo.actClienteExecute(Sender: TObject);
begin
  insertarCadena(FRecibo.Cliente.NOMBRE);
end;

procedure TfrViewTextoRecibo.actImporteExecute(Sender: TObject);
begin
  insertarCadena(FormatFloat('#,0.00 €', FRecibo.IMPORTE));
end;

procedure TfrViewTextoRecibo.actFechaExecute(Sender: TObject);
begin
  insertarCadena(FormatDateTime('"Madrid, " dd "de" mmmm "de" yyyy', FRecibo.FECHARECIBO));
end;

procedure TfrViewTextoRecibo.insertarCadena(pCadena: String);
var
  intAux: Integer;
begin
  inherited;
  intAux := Editor.SelStart+1;
  Editor.SelText := pCadena;
end;

function TfrViewTextoRecibo.GetRecibo: IBizRecibosCliente;
begin
  Result := FRecibo;
end;

procedure TfrViewTextoRecibo.SetRecibo(const Value: IBizRecibosCliente);
begin
  FRecibo := Value;

  if Assigned(FRecibo) then
     DADataSource.DataTable := FRecibo.DataTable;
end;

end.