{ fpGUI - Free Pascal GUI Toolkit Copyright (C) 2006 - 2013 See the file AUTHORS.txt, included in this distribution, for details of the copyright. See the file COPYING.modifiedLGPL, included in this distribution, for details about redistributing fpGUI. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Description: Defines a Text Edit widget. Also known a single line Text Entry widget. This unit also defines numeric edit widgets. } // Future enhancements: { TODO -cEventHandler : OnSetText - same as OnSetValue but before SetValue. } { TODO -cEventHandler : OnGetText - Returns a string used for displaying in GUI. May be different to Value property. Add extra parameter so we know if we need to display the formatted text or the 'value' text. The latter is for when the component has focus. } { TODO -cEventHandler : OnTextEdited - per character evaluation. } { TODO -cEventHandler : OnSetValue - fired after ENTER but before Value is set. AValue can be rejected or changed. } { TODO -cEventHandler : OnDataEntered - fired after new value has been accepted and Value property has been set. } unit fpg_edit; {$mode objfpc}{$H+} interface uses Classes, SysUtils, fpg_base, fpg_main, fpg_widget, fpg_menu; type TfpgBaseEdit = class(TfpgWidget) private FAutoSelect: Boolean; FHideSelection: Boolean; FPopupMenu: TfpgPopupMenu; FDefaultPopupMenu: TfpgPopupMenu; FText: string; FPasswordMode: Boolean; FBorderStyle: TfpgEditBorderStyle; FOnChange: TNotifyEvent; FMaxLength: integer; FSelecting: Boolean; FReadOnly: Boolean; FIgnoreMouseCursor: Boolean; FAutoSize: Boolean; procedure Adjust(UsePxCursorPos: boolean = false); virtual; procedure AdjustTextOffset(UsePxCursorPos: boolean); virtual; procedure AdjustDrawingInfo; virtual; // function PointToCharPos(x, y: integer): integer; procedure DeleteSelection; procedure DoCopy; procedure DoPaste(const AText: TfpgString); procedure SetAutoSelect(const AValue: Boolean); procedure SetBorderStyle(const AValue: TfpgEditBorderStyle); procedure SetHideSelection(const AValue: Boolean); procedure SetPasswordMode(const AValue: boolean); function GetFontDesc: string; procedure SetFontDesc(const AValue: string); procedure SetText(const AValue: string); procedure SetSideMargin(const AValue: integer); procedure SetHeightMargin(const AValue: integer); procedure DefaultPopupCut(Sender: TObject); procedure DefaultPopupCopy(Sender: TObject); procedure DefaultPopupPaste(Sender: TObject); procedure DefaultPopupClearAll(Sender: TObject); procedure DefaultPopupInsertFromCharmap(Sender: TObject); procedure SetDefaultPopupMenuItemsState; procedure SetReadOnly(const AValue: Boolean); procedure SetAutoSize(const AValue: Boolean); protected FFont: TfpgFont; FSideMargin: integer; FHeightMargin: integer; FMouseDragPos: integer; FSelStart: integer; FSelOffset: integer; FCursorPos: integer; // Caret position (characters) FCursorPx: integer; // Caret position (pixels) FTextOffset: integer; FDrawOffset: integer; FVisibleText: TfpgString; FVisSelStartPx: integer; FVisSelEndPx: integer; function GetMarginAdjustment: integer; virtual; procedure DrawSelection; virtual; procedure DoOnChange; virtual; procedure ShowDefaultPopupMenu(const x, y: integer; const shiftstate: TShiftState); virtual; procedure HandlePaint; override; procedure HandleResize(awidth, aheight: TfpgCoord); override; procedure HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleKeyPress(var keycode: word; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleLMouseDown(x, y: integer; shiftstate: TShiftState); override; procedure HandleRMouseUp(x, y: integer; shiftstate: TShiftState); override; procedure HandleMouseMove(x, y: integer; btnstate: word; shiftstate: TShiftState); override; procedure HandleDoubleClick(x, y: integer; button: word; shiftstate: TShiftState); override; procedure HandleMouseEnter; override; procedure HandleMouseExit; override; procedure HandleSetFocus; override; procedure HandleKillFocus; override; procedure HandleHide; override; function GetDrawText: String; property AutoSelect: Boolean read FAutoSelect write SetAutoSelect default True; property AutoSize: Boolean read FAutoSize write SetAutoSize default False; property BorderStyle: TfpgEditBorderStyle read FBorderStyle write SetBorderStyle default ebsDefault; property FontDesc: String read GetFontDesc write SetFontDesc; property HideSelection: Boolean read FHideSelection write SetHideSelection default True; property IgnoreMouseCursor: Boolean read FIgnoreMouseCursor write FIgnoreMouseCursor default False; property MaxLength: Integer read FMaxLength write FMaxLength; property PasswordMode: Boolean read FPasswordMode write SetPasswordMode default False; property PopupMenu: TfpgPopupMenu read FPopupMenu write FPopupMenu; property ReadOnly: Boolean read FReadOnly write SetReadOnly default False; property Text: String read FText write SetText; property OnChange: TNotifyEvent read FOnChange write FOnChange; public constructor Create(AOwner: TComponent); override; destructor Destroy; override; function SelectionText: string; function GetClientRect: TfpgRect; override; procedure SelectAll; procedure Clear; procedure ClearSelection; procedure CopyToClipboard; procedure CutToClipboard; procedure InsertAtCursorPos(const AText: TfpgString); procedure PasteFromClipboard; property Font: TfpgFont read FFont; property SideMargin: integer read FSideMargin write SetSideMargin default 3; property HeightMargin: integer read FHeightMargin write SetHeightMargin default 2; end; TfpgBaseTextEdit = class(TfpgBaseEdit) private FExtraHint: string; procedure SetExtraHint(const AValue: string); protected procedure HandlePaint; override; property ExtraHint: string read FExtraHint write SetExtraHint; public constructor Create(AOwner: TComponent); override; end; TfpgEdit = class(TfpgBaseTextEdit) public property PopupMenu; // UI Designer doesn't fully support it yet published property AcceptDrops; property Align; property AutoSelect; property AutoSize; property BackgroundColor default clBoxColor; property BorderStyle; property Enabled; property ExtraHint; property FontDesc; property HeightMargin; property HideSelection; property Hint; property IgnoreMouseCursor; property MaxLength; property ParentShowHint; property PasswordMode; property ReadOnly; property ShowHint; property SideMargin; property TabOrder; property Text; property TextColor; property OnChange; property OnDragEnter; property OnDragLeave; property OnDragDrop; property OnDragStartDetected; property OnEnter; property OnExit; property OnKeyChar; property OnKeyPress; property OnMouseEnter; property OnMouseExit; property OnPaint; property OnShowHint; end; TfpgBaseNumericEdit = class(TfpgBaseEdit) private FDecimals: integer; FOldColor: TfpgColor; FAlignment: TAlignment; FDecimalseparator: TfpgChar; FNegativeColor: TfpgColor; FThousandSeparator: TfpgChar; FShowThousand: boolean; FMaxLimit: boolean; FMinLimit: boolean; procedure AdjustTextOffset(UsePxCursorPos: boolean); override; procedure AdjustDrawingInfo; override; procedure SetOldColor(const AValue: TfpgColor); procedure SetAlignment(const AValue: TAlignment); procedure SetDecimalSeparator(const AValue: TfpgChar); procedure SetNegativeColor(const AValue: TfpgColor); procedure SetThousandSeparator(const AValue: TfpgChar); procedure SetShowThousand; procedure AdjustColorForNegativeValues; protected procedure DoOnChange; override; function GetMarginAdjustment: integer; override; procedure HandlePaint; override; procedure SetTextColor(const AValue: TfpgColor); override; procedure FormatEdit; virtual; procedure Justify; virtual; // to implement in derived classes property OldColor: TfpgColor read FOldColor write SetOldColor; property Alignment: TAlignment read FAlignment write SetAlignment default taRightJustify; property AutoSelect; property BackgroundColor default clBoxColor; property BorderStyle; {Someone likes to use English operating system but localized decimal and thousand separators Still to implement !!} property CustomDecimalSeparator: TfpgChar read FDecimalseparator write SetDecimalSeparator; property CustomThousandSeparator: TfpgChar read FThousandSeparator write SetThousandSeparator; property NegativeColor: TfpgColor read FNegativeColor write SetNegativeColor default clRed; property HideSelection; property TabOrder; property ShowThousand: boolean read FShowThousand write FShowThousand default False; public constructor Create(AOwner: TComponent); override; property MaxLimit: boolean read FMaxLimit write FMaxLimit; property MinLimit: boolean read FMinLimit write FMinLimit; published property FontDesc; end; TfpgEditInteger = class(TfpgBaseNumericEdit) private FMaxValue: integer; FMinValue: integer; protected function GetValue: integer; virtual; procedure SetValue(const AValue: integer); virtual; procedure SetMaxValue(const AValue: integer); virtual; procedure SetMinValue(const AValue: integer); virtual; procedure HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleSetFocus; override; procedure HandleKillFocus; override; procedure HandlePaint; override; public constructor Create(AOwner: TComponent); override; property OldColor; property Text; published property Align; property CustomThousandSeparator; property Enabled; property Hint; property MaxValue: integer read FMaxValue write SetMaxValue; property MinValue: integer read FMinValue write SetMinValue; property NegativeColor; property ParentShowHint; property ReadOnly; property ShowHint; property ShowThousand default True; property TabOrder; property TextColor; property Value: integer read GetValue write SetValue; property OnChange; property OnEnter; property OnExit; property OnKeyChar; property OnKeyPress; property OnMouseEnter; property OnMouseExit; property OnMouseMove; property OnShowHint; end; TfpgEditFloat = class(TfpgBaseNumericEdit) private FFixedDecimals: integer; FMaxValue: extended; FMinValue: extended; protected function GetValue: extended; virtual; procedure SetValue(const AValue: extended); virtual; procedure SetMaxValue(const AValue: extended); virtual; procedure SetMinValue(const AValue: extended); virtual; procedure SetDecimals(const AValue: integer); procedure SetFixedDecimals(const AValue: integer); procedure HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleSetFocus; override; procedure HandleKillFocus; override; procedure HandlePaint; override; public constructor Create(AOwner: TComponent); override; property OldColor; property Text; published property Align; property CustomDecimalSeparator; property CustomThousandSeparator; property Decimals: integer read FDecimals write SetDecimals default -1; property FixedDecimals: integer read FFixedDecimals write SetFixedDecimals default -1; property Enabled; property Hint; property MaxValue: extended read FMaxValue write SetMaxValue; property MinValue: extended read FMinValue write SetMinValue; property NegativeColor; property ParentShowHint; property ReadOnly; property ShowHint; property ShowThousand default True; property TabOrder; property TextColor; property Value: extended read GetValue write SetValue; property OnChange; property OnEnter; property OnExit; property OnKeyChar; property OnKeyPress; property OnMouseEnter; property OnMouseExit; property OnMouseMove; property OnShowHint; end; TfpgEditCurrency = class(TfpgBaseNumericEdit) private FMaxValue: Currency; FMinValue: Currency; protected function GetValue: Currency; virtual; procedure SetValue(const AValue: Currency); virtual; procedure SetMaxValue(const AValue: Currency); virtual; procedure SetMinValue(const AValue: Currency); virtual; procedure SetDecimals(AValue: integer); procedure HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleKeyPress(var keycode: word; var shiftstate: TShiftState; var consumed: Boolean); override; procedure HandleSetFocus; override; procedure HandleKillFocus; override; procedure HandlePaint; override; public constructor Create(AOwner: TComponent); override; property OldColor; property Text; published property Align; property CustomDecimalSeparator; property CustomThousandSeparator; property Decimals: integer read FDecimals write SetDecimals default 2; property Enabled; property Hint; property MaxValue: Currency read FMaxValue write SetMaxValue; property MinValue: Currency read FMinValue write SetMinValue; property NegativeColor; property ParentShowHint; property ReadOnly; property ShowHint; property ShowThousand default True; property TabOrder; property TextColor; property Value: Currency read GetValue write SetValue; property OnChange; property OnEnter; property OnExit; property OnKeyChar; property OnKeyPress; property OnMouseEnter; property OnMouseExit; property OnShowHint; end; function CreateEdit(AOwner: TComponent; x, y, w, h: TfpgCoord): TfpgEdit; function CreateEditInteger(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True): TfpgEditInteger; function CreateEditFloat(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True; ADecimals: Integer= -1; AFixedDecimals: integer= -1): TfpgEditFloat; function CreateEditCurrency(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True; ADecimals: Integer= 2): TfpgEditCurrency; implementation uses fpg_stringutils, fpg_constants, fpg_dialogs; const // internal popupmenu item names ipmCut = 'miDefaultCut'; ipmCopy = 'miDefaultCopy'; ipmPaste = 'miDefaultPaste'; ipmClearAll = 'miDefaultClearAll'; ipmCharmap = 'miDefaultCharmap'; cPasswordChar = #$E2#$97#$8F; // U+25CF BLACK CIRCLE function CreateEdit(AOwner: TComponent; x, y, w, h: TfpgCoord): TfpgEdit; begin Result := TfpgEdit.Create(AOwner); Result.Left := x; Result.Top := y; if w > 0 then Result.Width := w; if h < TfpgEdit(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) then Result.Height := TfpgEdit(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) else Result.Height:= h; Result.UpdateWindowPosition; end; function CreateEditInteger(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True): TfpgEditInteger; begin Result := TfpgEditInteger.Create(AOwner); Result.Left := x; Result.Top := y; Result.Width := w; Result.ShowThousand:= AShowThousand; if h < TfpgEditInteger(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) then Result.Height := TfpgEditInteger(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) else Result.Height:= h; Result.UpdateWindowPosition; end; function CreateEditFloat(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True; ADecimals: Integer= -1; AFixedDecimals: integer= -1): TfpgEditFloat; begin Result := TfpgEditFloat.Create(AOwner); Result.Left := x; Result.Top := y; Result.Width := w; Result.ShowThousand:= AShowThousand; Result.Decimals := ADecimals; Result.FixedDecimals := AFixedDecimals; if h < TfpgEditFloat(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) then Result.Height := TfpgEditFloat(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) else Result.Height:= h; Result.UpdateWindowPosition; end; function CreateEditCurrency(AOwner: TComponent; x, y, w, h: TfpgCoord; AShowThousand: boolean= True; ADecimals: Integer= 2): TfpgEditCurrency; begin Result := TfpgEditCurrency.Create(AOwner); Result.Left := x; Result.Top := y; Result.Width := w; Result.ShowThousand:= AShowThousand; Result.Decimals := ADecimals; if h < TfpgEditCurrency(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) then Result.Height := TfpgEditCurrency(Result).FFont.Height + 4 + (Result.FHeightMargin * 2) else Result.Height:= h; Result.UpdateWindowPosition; end; { TfpgBaseEdit } procedure TfpgBaseEdit.Adjust(UsePxCursorPos: boolean = false); begin AdjustTextOffset(False); AdjustDrawingInfo; end; procedure TfpgBaseEdit.AdjustTextOffset(UsePxCursorPos: boolean); {If UsePxCursorPos then determines FCursorPos from FCursorPx (that holds mouse pointer coordinates) Calculates exact FCursorPx (relative to the widget bounding box) from FCursorPos Calculates FTextOffset based on FCursorPx} var dtext: string; ch: string; // current character chnum: integer; // its ordinal number chx: integer; // its X position relative to widget bestchx: integer; // chx, nearest to the mouse position (indicated by FCursorPx if UsePxCursorPos = True) tw: integer; // total characters width, that becomes FCursorPx relative to the beginning of the text ptw: integer; dpos: integer; // helps to pass through an utf-8 string quickly VisibleWidth: integer; // width of the edit field minus side margins r: TfpgRect; begin if UsePxCursorPos then begin if FCursorPx > 0 then // bestchx < chx minimum bestchx := Low(chx) + 1 + FCursorPx else // bestchx > chx maximum bestchx := High(chx) - 1 + FCursorPx; end else FCursorPx := 0; dtext := GetDrawText; ch := ''; chnum := 0; tw := 0; dpos := 0; while dpos <= Length(dtext) do begin dpos := UTF8CharAtByte(dtext, dpos, ch); ptw := tw; tw := tw + FFont.TextWidth(ch); chx := tw - FTextOffset + FSideMargin; if UsePxCursorPos then begin if abs(chx - FCursorPx) < abs(bestchx - FCursorPx) then begin bestchx := chx; FCursorPos := chnum; end else begin tw := ptw; break; end; end else begin if chnum >= FCursorPos then break; end; Inc(chnum); end; r := GetClientRect; VisibleWidth := (r.Width - (2 * FSideMargin)); if tw - FTextOffset > VisibleWidth - 2 then FTextOffset := tw - VisibleWidth + 2 else if tw - FTextOffset < 0 then begin FTextOffset := tw; if tw <> 0 then Dec(FTextOffset, 2); end; FCursorPx := tw - FTextOffset + FSideMargin; end; procedure TfpgBaseEdit.AdjustDrawingInfo; // Calculates FVisSelStartPx, FVisSelEndPx, FVisibleText, FDrawOffset var vtstartbyte, vtendbyte: integer; // visible characters' start/end in utf-8 string, bytes bestfx, bestlx: integer; dtext: string; ch: string; // current character chnum: integer; // its ordinal number chx: integer; // its X position relative to widget tw: integer; // total characters width, that becomes FCursorPx relative to the beginning of the text ptw: integer; // total width on the previous step dpos: integer; // helps to pass through an utf-8 string quickly pdp: integer; // dpos on the previous step vstart, vend: integer; // visible area start and end, pixels slstart, slend: integer; // selection start and end, pixels begin vstart := FSideMargin; vend := FWidth - FSideMargin; if FSelOffset > 0 then begin slstart := FSelStart; slend := FSelStart + FSelOffset; end else begin slstart := FSelStart + FSelOffset; slend := FSelStart; end; FVisSelStartPx := vend; // because we stop the search FVisSelEndPx := vend; // after last visible character is found bestfx := Low(chx) + 1 + vstart; bestlx := Low(chx) + 1 + vend; dtext := GetDrawText; ch := ''; chnum := 0; tw := 0; dpos := 0; FDrawOffset := 0; while dpos <= Length(dtext) do begin pdp := dpos; dpos := UTF8CharAtByte(dtext, dpos, ch); ptw := tw; tw := tw + FFont.TextWidth(ch); chx := tw - FTextOffset + FSideMargin; // calculate selection-related fields if chnum = slstart then FVisSelStartPx := chx; if chnum = slend then FVisSelEndPx := chx; // search for the first/last visible characters if abs(chx - vstart) < abs(bestfx - vstart) then begin bestfx := chx; vtstartbyte := pdp; FDrawOffset := ptw; end; // in small edit field the same character can be both the first and the last, so no 'else' allowed if abs(chx - vend) < abs(bestlx - vend) then begin bestlx := chx; vtendbyte := UTF8CharAtByte(dtext, dpos, ch); // plus one more character end else break; // we can safely break after last visible character is found Inc(chnum); end; if FVisSelStartPx < vstart then FVisSelStartPx := vstart; if FVisSelEndPx > vend then FVisSelEndPx := vend; // FVisibleText := UTF8Copy(dtext, fvc, lvc - fvc + 2); FVisibleText := Copy(dtext, vtstartbyte, vtendbyte - vtstartbyte); FDrawOffset := FTextOffset - FDrawOffset; end; {function TfpgBaseEdit.PointToCharPos(x, y: integer): integer; var n: integer; cx: integer; // character X position bestcx: integer; dtext: string; tw, dpos: integer; ch: string; begin ch := ''; dtext := GetDrawText; if x > 0 then // bestcx < cx minimum bestcx := Low(cx) + 1 + x else // bestcx > cx maximum bestcx := High(cx) - 1 + x; tw := 0; dpos := 0; n := 0; Result := n; // searching the appropriate character position while dpos <= Length(dtext) do begin dpos := UTF8CharAtByte(dtext, dpos, ch); tw := tw + FFont.TextWidth(ch); cx := tw - FTextOffset + FSideMargin; if abs(cx - x) < abs(bestcx - x) then begin bestcx := cx; Result := n; end else Exit; //==> Inc(n); end; end;} procedure TfpgBaseEdit.SetBorderStyle(const AValue: TfpgEditBorderStyle); begin if FBorderStyle = AValue then Exit; //==> FBorderStyle := AValue; RePaint; end; procedure TfpgBaseEdit.SetHideSelection(const AValue: Boolean); begin if FHideSelection = AValue then Exit; FHideSelection := AValue; end; // paint selection rectangle procedure TfpgBaseEdit.DrawSelection; var lcolor: TfpgColor; rs: TfpgRect; r: TfpgRect; begin r := Canvas.GetClipRect; // contains adjusted size based on borders if Focused then begin lcolor := clSelection; Canvas.SetTextColor(clSelectionText); end else begin lcolor := clInactiveSel; Canvas.SetTextColor(clText1); end; rs.SetRect(FVisSelStartPx, r.Top + FHeightMargin, FVisSelEndPx - FVisSelStartPx, FFont.Height); Canvas.SetColor(lcolor); Canvas.FillRectangle(rs); Canvas.SetTextColor(clWhite); Canvas.AddClipRect(rs); fpgStyle.DrawString(Canvas, -FDrawOffset + GetMarginAdjustment, r.Top + FHeightMargin, FVisibleText, Enabled); Canvas.ClearClipRect; end; procedure TfpgBaseEdit.HandlePaint; var r: TfpgRect; rect: TRect; begin Canvas.ClearClipRect; r.SetRect(0, 0, Width, Height); case BorderStyle of ebsNone: begin // do nothing end; ebsDefault: begin fpgStyle.DrawControlFrame(Canvas, r); rect := fpgStyle.GetControlFrameBorders; InflateRect(r, -rect.Left, -rect.Top); { assuming borders are even on opposite sides } end; ebsSingle: begin Canvas.SetColor(clShadow2); Canvas.DrawRectangle(r); InflateRect(r, -1, -1); end; end; Canvas.SetClipRect(r); fpgStyle.DrawEditBox(Canvas, r, Enabled, ReadOnly, FBackgroundColor); Canvas.SetFont(FFont); end; procedure TfpgBaseEdit.HandleResize(awidth, aheight: TfpgCoord); begin inherited HandleResize(awidth, aheight); AdjustDrawingInfo; end; procedure TfpgBaseEdit.HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); var s: TfpgChar; prevval: string; begin inherited HandleKeyChar(AText, shiftstate, consumed); if consumed then Exit; //==> prevval := Text; s := AText; if (not ReadOnly) then begin // Handle only printable characters // UTF-8 characters beyond ANSI range are supposed to be printable if ((Ord(AText[1]) > 31) and (Ord(AText[1]) < 127)) or (Length(AText) > 1) then begin if (FMaxLength <= 0) or (UTF8Length(FText) < FMaxLength) then begin DeleteSelection; UTF8Insert(s, FText, FCursorPos + 1); Inc(FCursorPos); FSelStart := FCursorPos; Adjust; end; consumed := True; end; if prevval <> Text then DoOnChange; end; if consumed then RePaint; end; procedure TfpgBaseEdit.HandleKeyPress(var keycode: word; var shiftstate: TShiftState; var consumed: boolean); var hasChanged: boolean; procedure StopSelection; begin FSelStart := FCursorPos; FSelOffset := 0; end; begin hasChanged := False; fpgApplication.HideHint; Consumed := True; case CheckClipBoardKey(keycode, shiftstate) of ckCopy: begin DoCopy; end; ckPaste: begin DoPaste(fpgClipboard.Text); if not ReadOnly then hasChanged := True; end; ckCut: begin DoCopy; DeleteSelection; if not ReadOnly then begin Adjust; hasChanged := True; end; end; else Consumed := False; end; if not Consumed then begin // checking for movement keys: case keycode of keyLeft: if FCursorPos > 0 then begin consumed := True; Dec(FCursorPos); if (ssCtrl in shiftstate) then // word search... // while (FCursorPos > 0) and not ptkIsAlphaNum(copy(FText,FCursorPos,1)) // do Dec(FCursorPos); // while (FCursorPos > 0) and ptkIsAlphaNum(copy(FText,FCursorPos,1)) // do Dec(FCursorPos); ; end; keyRight: begin consumed := True; if FCursorPos < UTF8Length(FText) then begin Inc(FCursorPos); if (ssCtrl in shiftstate) then // word search... // while (FCursorPos < Length(FText)) and ptkIsAlphaNum(copy(FText,FCursorPos+1,1)) // do Inc(FCursorPos); // while (FCursorPos < Length(FText)) and not ptkIsAlphaNum(copy(FText,FCursorPos+1,1)) // do Inc(FCursorPos); ; end; end; keyHome: begin consumed := True; FCursorPos := 0; end; keyEnd: begin consumed := True; FCursorPos := UTF8Length(FText); end; end; if Consumed then begin FSelecting := (ssShift in shiftstate); if FSelecting then FSelOffset := FCursorPos - FSelStart else StopSelection; Adjust; end; end; // movement key checking if not Consumed then begin if not ReadOnly then begin case keycode of keyBackSpace: begin if FSelOffset <> 0 then DeleteSelection else if FCursorPos > 0 then begin UTF8Delete(FText, FCursorPos, 1); Dec(FCursorPos); hasChanged := True; end;// backspace Consumed := True; end; keyDelete: begin if FSelOffset <> 0 then DeleteSelection else if FCursorPos < UTF8Length(FText) then UTF8Delete(FText, FCursorPos + 1, 1); hasChanged := True; Consumed := True; end; end; { case } end; if Consumed then begin StopSelection; Adjust; end; end; { if } if not consumed then inherited HandleKeyPress(keycode, shiftstate, consumed); if hasChanged then DoOnChange; if consumed then RePaint; end; procedure TfpgBaseEdit.HandleLMouseDown(x, y: integer; shiftstate: TShiftState); begin fpgApplication.HideHint; inherited HandleLMouseDown(x, y, shiftstate); FCursorPx := x; AdjustTextOffset(True); FMouseDragPos := FCursorPos; if (ssShift in shiftstate) then FSelOffset := FCursorPos - FSelStart else begin FSelStart := FCursorPos; FSelOffset := 0; end; AdjustDrawingInfo; RePaint; end; procedure TfpgBaseEdit.HandleRMouseUp(x, y: integer; shiftstate: TShiftState); begin inherited HandleRMouseUp(x, y, shiftstate); if Assigned(PopupMenu) then PopupMenu.ShowAt(self, x, y) else ShowDefaultPopupMenu(x, y, ShiftState); end; procedure TfpgBaseEdit.HandleMouseMove(x, y: integer; btnstate: word; shiftstate: TShiftState); var cp: integer; begin if (btnstate and MOUSE_LEFT) = 0 then // Left button not down begin inherited HandleMouseMove(x, y, btnstate, shiftstate); Exit; //==> end; cp := FCursorPos; FCursorPx := x; AdjustTextOffset(True); if FCursorPos <> cp then begin FSelOffset := FCursorPos - FSelStart; AdjustDrawingInfo; Repaint; end; end; procedure TfpgBaseEdit.HandleDoubleClick(x, y: integer; button: word; shiftstate: TShiftState); begin // button is always Mouse_Left, but lets leave this test here for good measure if button = MOUSE_LEFT then SelectAll else inherited; end; procedure TfpgBaseEdit.HandleMouseEnter; begin inherited HandleMouseEnter; if (csDesigning in ComponentState) then Exit; if Enabled and (not FIgnoreMouseCursor) then MouseCursor := mcIBeam; end; procedure TfpgBaseEdit.HandleMouseExit; begin inherited HandleMouseExit; if (csDesigning in ComponentState) then Exit; MouseCursor := mcDefault; end; procedure TfpgBaseEdit.HandleSetFocus; begin inherited HandleSetFocus; if AutoSelect then SelectAll; end; procedure TfpgBaseEdit.HandleKillFocus; begin inherited HandleKillFocus; if AutoSelect then FSelOffset := 0; end; procedure TfpgBaseEdit.HandleHide; begin fpgCaret.UnSetCaret (Canvas); inherited; end; function TfpgBaseEdit.GetDrawText: string; var i: integer; begin if not PassWordMode then Result := FText else begin for i := 1 to UTF8Length(FText) do Result := Result + cPasswordChar; end; end; constructor TfpgBaseEdit.Create(AOwner: TComponent); begin inherited Create(AOwner); FFont := fpgGetFont('#Edit1'); // owned object ! Focusable := True; FHeight := 24; FWidth := 120; FTextColor := Parent.TextColor; FBackgroundColor := clBoxColor; FAutoSelect := True; FAutoSize := False; FSelecting := False; FHideSelection := True; FReadOnly := False; FSideMargin := 3; FHeightMargin := 2; FMaxLength := 0; // no limit FText := ''; FCursorPos := 0; FSelStart := FCursorPos; FSelOffset := 0; FTextOffset := 0; FPasswordMode := False; FBorderStyle := ebsDefault; FIgnoreMouseCursor := False; FPopupMenu := nil; FDefaultPopupMenu := nil; FOnChange := nil; end; destructor TfpgBaseEdit.Destroy; begin if Assigned(FDefaultPopupMenu) then FDefaultPopupMenu.Free; FFont.Free; inherited Destroy; end; function TfpgBaseEdit.SelectionText: string; begin if FSelOffset <> 0 then begin if FSelOffset < 0 then Result := UTF8Copy(FText, 1 + FSelStart + FSelOffset, -FSelOffset) else begin Result := UTF8Copy(FText, 1 + FSelStart, FSelOffset); end; end else Result := ''; end; procedure TfpgBaseEdit.SetPasswordMode (const AValue: boolean ); begin if FPasswordMode = AValue then Exit; //==> FPasswordMode := AValue; Adjust; RePaint; end; function TfpgBaseEdit.GetFontDesc: string; begin Result := FFont.FontDesc; end; procedure TfpgBaseEdit.SetFontDesc(const AValue: string); var rect: TRect; begin FFont.Free; FFont := fpgGetFont(AValue); if AutoSize then begin rect := fpgStyle.GetControlFrameBorders; case BorderStyle of ebsNone: if Height < FFont.Height + (FHeightMargin * 2) then Height := FFont.Height + (FHeightMargin * 2); ebsDefault: if Height < FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2) then Height := FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2); ebsSingle: if Height < FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2) then Height := FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2); end; end; Adjust; RePaint; end; procedure TfpgBaseEdit.SetText(const AValue: string); var s: string; prevval: TfpgString; begin if FText = AValue then Exit; prevval := FText; if FMaxLength <> 0 then begin if UTF8Length(FText) > FMaxLength then s := UTF8Copy(AValue, 1, FMaxLength) else s := AValue; end else s := AValue; FText := s; FCursorPos := 0; FSelStart := FCursorPos; FSelOffset := 0; FTextOffset := 0; Adjust; if prevval <> Text then DoOnChange; RePaint; end; procedure TfpgBaseEdit.SetSideMargin(const AValue: integer); begin if (FSideMargin = AValue) or (AValue <= 0) then Exit; //=> FSideMargin := AValue; Repaint; end; procedure TfpgBaseEdit.SetHeightMargin(const AValue: integer); var rect: TRect; begin if (FHeightMargin = AValue) or (AValue <= 0) then Exit; //=> FHeightMargin := AValue; if AutoSize then begin rect := fpgStyle.GetControlFrameBorders; case BorderStyle of ebsNone: Height := FFont.Height + (FHeightMargin * 2); ebsDefault: Height := FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2); ebsSingle: Height := FFont.Height + rect.Top + rect.Bottom + (FHeightMargin * 2); end; end; Repaint; end; procedure TfpgBaseEdit.DefaultPopupCut(Sender: TObject); begin if ReadOnly then Exit; CutToClipboard; end; procedure TfpgBaseEdit.DefaultPopupCopy(Sender: TObject); begin if ReadOnly then Exit; CopyToClipboard; end; procedure TfpgBaseEdit.DefaultPopupPaste(Sender: TObject); begin if ReadOnly then Exit; PasteFromClipboard; end; procedure TfpgBaseEdit.DefaultPopupClearAll(Sender: TObject); begin if ReadOnly then Exit; Clear; end; procedure TfpgBaseEdit.DefaultPopupInsertFromCharmap(Sender: TObject); var s: TfpgString; begin if ReadOnly then Exit; s := fpgShowCharMap; if s <> '' then DoPaste(s); end; procedure TfpgBaseEdit.SetDefaultPopupMenuItemsState; var i: integer; itm: TfpgMenuItem; begin for i := 0 to FDefaultPopupMenu.ComponentCount-1 do begin if FDefaultPopupMenu.Components[i] is TfpgMenuItem then begin itm := TfpgMenuItem(FDefaultPopupMenu.Components[i]); // enabled/disable menu items if itm.Name = ipmCut then itm.Enabled := (not ReadOnly) and (FSelOffset <> 0) else if itm.Name = ipmCopy then itm.Enabled := FSelOffset <> 0 else if itm.Name = ipmPaste then itm.Enabled := (not ReadOnly) and (fpgClipboard.Text <> '') else if itm.Name = ipmClearAll then itm.Enabled := (not ReadOnly) and (Text <> '') else if itm.Name = ipmCharmap then itm.Enabled := (not ReadOnly); end; end; end; procedure TfpgBaseEdit.SetReadOnly(const AValue: Boolean); begin if FReadOnly = AValue then exit; FReadOnly := AValue; RePaint; end; procedure TfpgBaseEdit.SetAutoSize(const AValue: Boolean); var r: TRect; begin if FAutoSize = AValue then exit; FAutoSize := AValue; if FAutoSize then begin r := fpgStyle.GetControlFrameBorders; FHeight := FFont.Height + (FHeightMargin*2) + (r.Top+r.Bottom); UpdateWindowPosition; end; end; function TfpgBaseEdit.GetMarginAdjustment: integer; begin Result := FSideMargin; end; procedure TfpgBaseEdit.DoOnChange; begin if Assigned(FOnChange) then FOnChange(self); end; procedure TfpgBaseEdit.ShowDefaultPopupMenu(const x, y: integer; const shiftstate: TShiftState); var itm: TfpgMenuItem; begin if not Assigned(FDefaultPopupMenu) then begin FDefaultPopupMenu := TfpgPopupMenu.Create(nil); itm := FDefaultPopupMenu.AddMenuItem(rsCut, '', @DefaultPopupCut); itm.Name := ipmCut; itm := FDefaultPopupMenu.AddMenuItem(rsCopy, '', @DefaultPopupCopy); itm.Name := ipmCopy; itm := FDefaultPopupMenu.AddMenuItem(rsPaste, '', @DefaultPopupPaste); itm.Name := ipmPaste; itm := FDefaultPopupMenu.AddMenuItem(rsDelete, '', @DefaultPopupClearAll); itm.Name := ipmClearAll; itm := FDefaultPopupMenu.AddMenuItem('-', '', nil); itm.Name := 'N1'; itm := FDefaultPopupMenu.AddMenuItem(rsInsertFromCharacterMap, '', @DefaultPopupInsertFromCharmap); itm.Name := ipmCharmap; end; SetDefaultPopupMenuItemsState; FDefaultPopupMenu.ShowAt(self, x, y); end; procedure TfpgBaseEdit.DeleteSelection; var prevval: TfpgString; begin if ReadOnly then Exit; prevval := FText; if FSelOffset <> 0 then begin if FSelOffset < 0 then begin UTF8Delete(FText, 1 + FSelStart + FSelOffset, -FSelOffset); FCurSorPos := FSelStart + FSelOffset; end else begin UTF8Delete(FText, 1 + FSelStart, FSelOffset); FCurSorPos := FSelStart; end; FSelOffset := 0; FSelStart := FCursorPos; end; if prevval <> Text then DoOnChange; end; procedure TfpgBaseEdit.DoCopy; begin if FSelOffset = 0 then Exit; //==> fpgClipboard.Text := SelectionText; end; procedure TfpgBaseEdit.DoPaste(const AText: TfpgString); var s: string; prevval: TfpgString; begin if ReadOnly then Exit; prevval := FText; DeleteSelection; s := AText; if (FMaxLength > 0) then if UTF8Length(FText) + UTF8Length(s) > FMaxLength then s := UTF8Copy(s, 1, FMaxLength - UTF8Length(FText)); // trim the clipboard text if needed if UTF8Length(s) < 1 then Exit; //==> UTF8Insert(s, FText, FCursorPos + 1); FCursorPos := FCursorPos + UTF8Length(s); FSelStart := FCursorPos; Adjust; if prevval <> Text then DoOnChange; Repaint; end; procedure TfpgBaseEdit.SetAutoSelect(const AValue: Boolean); begin if FAutoSelect = AValue then Exit; //==> FAutoSelect := AValue; end; procedure TfpgBaseEdit.SelectAll; begin FSelecting := True; FSelStart := 0; FSelOffset := UTF8Length(FText); FCursorPos := FSelOffset; Adjust; Repaint; end; procedure TfpgBaseEdit.Clear; begin Text := ''; end; procedure TfpgBaseEdit.ClearSelection; begin DeleteSelection; Adjust; RePaint; end; procedure TfpgBaseEdit.CopyToClipboard; begin DoCopy; end; procedure TfpgBaseEdit.CutToClipboard; begin DoCopy; DeleteSelection; Adjust; RePaint; end; procedure TfpgBaseEdit.InsertAtCursorPos(const AText: TfpgString); begin if AText <> '' then DoPaste(AText); end; function TfpgBaseEdit.GetClientRect: TfpgRect; var rect: TRect; begin Result := inherited GetClientRect; rect := fpgStyle.GetControlFrameBorders; case BorderStyle of // ebsNone: // nothing to do ebsDefault: InflateRect(Result, -rect.Left, -rect.Top); { assuming borders are even on opposite sides } ebsSingle: InflateRect(Result, -1, -1); end; end; procedure TfpgBaseEdit.PasteFromClipboard; begin DoPaste(fpgClipboard.Text); end; { TfpgBaseTextEdit } procedure TfpgBaseTextEdit.HandlePaint; var r: TfpgRect; begin inherited HandlePaint; r := Canvas.GetClipRect; // contains adjusted size based on borders if Enabled and (FVisibleText = '') and (not Focused) then begin Canvas.SetTextColor(clShadow1); fpgStyle.DrawString(Canvas, -FDrawOffset + GetMarginAdjustment, r.Top + FHeightMargin, FExtraHint, Enabled); end else begin Canvas.SetTextColor(FTextColor); fpgStyle.DrawString(Canvas, -FDrawOffset + GetMarginAdjustment, r.Top + FHeightMargin, FVisibleText, Enabled); end; if Focused then begin // drawing selection if FSelOffset <> 0 then DrawSelection; // drawing cursor fpgCaret.SetCaret(Canvas, FCursorPx, r.Top + FHeightMargin, fpgCaret.Width, FFont.Height); end else begin // drawing selection if (AutoSelect = False) and (FSelOffset <> 0) and (HideSelection = False) then DrawSelection; fpgCaret.UnSetCaret(Canvas); end; end; constructor TfpgBaseTextEdit.Create(AOwner: TComponent); begin inherited Create(AOwner); FExtraHint := ''; end; procedure TfpgBaseTextEdit.SetExtraHint(const AValue: string); begin if FExtraHint = AValue then Exit; //==> FExtraHint := AValue; Repaint; end; { TfpgBaseNumericEdit } procedure TfpgBaseNumericEdit.AdjustTextOffset(UsePxCursorPos: boolean); {If UsePxCursorPos then determines FCursorPos from FCursorPx (that holds mouse pointer coordinates) Calculates exact FCursorPx (relative to the widget bounding box) from FCursorPos Calculates FTextOffset based on FCursorPx} var dtext: string; ch: string; // current character chnum: integer; // its ordinal number chx: integer; // its X position relative to widget bestchx: integer; // chx, nearest to the mouse position (indicated by FCursorPx if UsePxCursorPos = True) tw: integer; // total characters width, that becomes FCursorPx relative to the beginning of the text ptw: integer; dpos: integer; // helps to pass through an utf-8 string quickly VisibleWidth: integer; // width of the edit field minus side margins r: TfpgRect; begin if UsePxCursorPos then begin if FCursorPx > 0 then // bestchx < chx minimum bestchx := Low(chx) + 1 + FCursorPx else // bestchx > chx maximum bestchx := High(chx) - 1 + FCursorPx; end else FCursorPx := 0; dtext := GetDrawText; ch := ''; chnum := 0; tw := 0; dpos := 0; r := GetClientRect; while dpos <= Length(dtext) do begin dpos := UTF8CharAtByte(dtext, dpos, ch); ptw := tw; tw := tw + FFont.TextWidth(ch); case FAlignment of taLeftJustify: chx := tw - FTextOffset + FSideMargin; taRightJustify: chx := tw - FTextOffset - FSideMargin + r.Width - FFont.TextWidth(dtext); end; if UsePxCursorPos then begin if abs(chx - FCursorPx) < abs(bestchx - FCursorPx) then begin bestchx := chx; FCursorPos := chnum; end else begin tw := ptw; break; end; end else begin if chnum >= FCursorPos then break; end; Inc(chnum); end; VisibleWidth := (r.Width - (2 * FSideMargin)); if tw - FTextOffset > VisibleWidth - 2 then FTextOffset := tw - VisibleWidth + 2 else if tw - FTextOffset < 0 then begin FTextOffset := tw; if tw <> 0 then Dec(FTextOffset, 2); end; case FAlignment of taLeftJustify: FCursorPx := tw - FTextOffset + FSideMargin; taRightJustify: FCursorPx := tw - FTextOffset - FSideMargin + r.Width - FFont.TextWidth(dtext); end; end; procedure TfpgBaseNumericEdit.AdjustDrawingInfo; // Calculates FVisSelStartPx, FVisSelEndPx, FVisibleText, FDrawOffset var vtstartbyte, vtendbyte: integer; // visible characters' start/end in utf-8 string, bytes bestfx, bestlx: integer; dtext: string; ch: string; // current character chnum: integer; // its ordinal number chx: integer; // its X position relative to widget tw: integer; // total characters width, that becomes FCursorPx relative to the beginning of the text ptw: integer; // total width on the previous step dpos: integer; // helps to pass through an utf-8 string quickly pdp: integer; // dpos on the previous step vstart, vend: integer; // visible area start and end, pixels slstart, slend: integer; // selection start and end, pixels r: TfpgRect; begin vstart := FSideMargin; vend := FWidth - FSideMargin; if FSelOffset > 0 then begin slstart := FSelStart; slend := FSelStart + FSelOffset; end else begin slstart := FSelStart + FSelOffset; slend := FSelStart; end; FVisSelStartPx := vend; // because we stop the search FVisSelEndPx := vend; // after last visible character is found bestfx := Low(chx) + 1 + vstart; bestlx := Low(chx) + 1 + vend; dtext := GetDrawText; ch := ''; chnum := 0; tw := 0; dpos := 0; r := GetClientRect; FDrawOffset := 0; while dpos <= Length(dtext) do begin pdp := dpos; dpos := UTF8CharAtByte(dtext, dpos, ch); ptw := tw; tw := tw + FFont.TextWidth(ch); case FAlignment of taLeftJustify: chx := tw - FTextOffset + FSideMargin; taRightJustify: chx := tw - FTextOffset - FSideMargin + r.Width - FFont.TextWidth(dtext); end; // calculate selection-related fields if chnum = slstart then FVisSelStartPx := chx; if chnum = slend then FVisSelEndPx := chx; // search for the first/last visible characters if abs(chx - vstart) < abs(bestfx - vstart) then begin bestfx := chx; vtstartbyte := pdp; case FAlignment of taLeftJustify: FDrawOffset := ptw; taRightJustify: FDrawOffset := ptw + r.Width - FFont.TextWidth(dtext); end; end; // in small edit field the same character can be both the first and the last, so no 'else' allowed if abs(chx - vend) < abs(bestlx - vend) then begin bestlx := chx; vtendbyte := UTF8CharAtByte(dtext, dpos, ch); // plus one more character end else break; // we can safely break after last visible character is found Inc(chnum); end; if FVisSelStartPx < vstart then FVisSelStartPx := vstart; if FVisSelEndPx > vend then FVisSelEndPx := vend; // FVisibleText := UTF8Copy(dtext, fvc, lvc - fvc + 2); FVisibleText := Copy(dtext, vtstartbyte, vtendbyte - vtstartbyte); FDrawOffset := FTextOffset - FDrawOffset; end; procedure TfpgBaseNumericEdit.SetOldColor(const AValue: TfpgColor); begin if FOldColor=AValue then exit; FOldColor:=AValue; end; procedure TfpgBaseNumericEdit.SetAlignment(const AValue: TAlignment); begin if FAlignment=AValue then exit; FAlignment:=AValue; end; procedure TfpgBaseNumericEdit.SetDecimalSeparator(const AValue: TfpgChar); begin if FDecimalseparator=AValue then exit; FDecimalseparator:=AValue; end; procedure TfpgBaseNumericEdit.SetNegativeColor(const AValue: TfpgColor); begin if FNegativeColor=AValue then exit; FNegativeColor:=AValue; FormatEdit; Repaint; end; procedure TfpgBaseNumericEdit.SetThousandSeparator(const AValue: TfpgChar); begin if FThousandSeparator=AValue then exit; FThousandSeparator:=AValue; end; procedure TfpgBaseNumericEdit.SetShowThousand; var i,long: integer; txt, texte, decimal: string; begin if FDecimals > 0 then begin if Pos(FDecimalSeparator, fText) > 0 then begin txt := UTF8Copy(fText, 1, Pred(UTF8Pos(FDecimalSeparator, fText))); if UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) > FDecimals then decimal := UTF8Copy(fText, Succ(UTF8Pos(FDecimalSeparator, fText)), FDecimals) else decimal := UTF8Copy(fText, Succ(UTF8Pos(FDecimalSeparator, fText)), UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText)); end else txt := fText; end else begin if FDecimals = 0 then begin if Pos(FDecimalSeparator, fText) > 0 then txt := UTF8Copy(fText, 1, Pred(UTF8Pos(FDecimalSeparator, fText))) else txt := fText; end else if Pos(FDecimalSeparator, fText) > 0 then begin txt := UTF8Copy(fText, 1, Pred(UTF8Pos(FDecimalSeparator, fText))); decimal := UTF8Copy(fText, Succ(UTF8Pos(FDecimalSeparator, fText)), UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText)); end else txt := fText; end; if ShowThousand then begin if fText > '' then if fText[1] = '-' then txt:= UTF8Copy(txt, 2, UTF8Length(txt)-1); long := UTF8Length(txt); if long = 0 then texte := '' else begin for i := 1 to UTF8Length(txt) do if fpgCharAt(txt, i) = FThousandSeparator then begin txt:= UTF8Copy(txt, 1, i - 1) + UTF8Copy(txt, i + 1, long - i); dec(long); end; i := 0; texte := ''; repeat if i > 0 then if ((i mod 3) = 0) and (fpgCharAt(txt,UTF8Length(txt)-UTF8Length(texte)) <> FThousandSeparator) then begin texte := FThousandSeparator + texte; if fText[1] = '-' then begin if Pred(FCursorPos) <= UTF8Length(texte) then Inc(FCursorPos); end else if FCursorPos <= UTF8Length(texte) then Inc(FCursorPos); end; texte := Copy(txt, long - i, 1) + texte; inc(i); until i = long; end; if fText > '' then begin if fText[1] = '-' then begin if UTF8Pos(FDecimalSeparator, fText) > 0 then fText := '-' + texte + FDecimalSeparator + decimal else fText := '-' + texte; end else begin if UTF8Pos(FDecimalSeparator, fText) > 0 then fText := texte + FDecimalSeparator + decimal else fText := texte + decimal; end; end; end; end; procedure TfpgBaseNumericEdit.AdjustColorForNegativeValues; begin // Colour negative number if LeftStr(Text,1) = '-' then FTextColor := NegativeColor else FTextColor := OldColor; end; procedure TfpgBaseNumericEdit.DoOnChange; begin AdjustColorForNegativeValues; inherited DoOnChange; end; function TfpgBaseNumericEdit.GetMarginAdjustment: integer; begin // Due to numeric edits being right aligned, the margin is negative Result := -FSideMargin; end; procedure TfpgBaseNumericEdit.Justify; begin //based on Alignment property this method will align the derived edit correctly. end; procedure TfpgBaseNumericEdit.HandlePaint; var x: TfpgCoord; r: TfpgRect; begin inherited HandlePaint; if Alignment = taRightJustify then begin r := GetClientRect; Canvas.SetClipRect(r); Canvas.SetFont(Font); Canvas.SetTextColor(TextColor); x := r.Width - Font.TextWidth(Text) - FSideMargin; fpgStyle.DrawString(Canvas, x, r.Top + FHeightMargin, Text, Enabled); if Focused then begin // drawing selection if FSelOffset <> 0 then DrawSelection; // drawing cursor fpgCaret.SetCaret(Canvas, FCursorPx, r.Top + FHeightMargin, fpgCaret.Width, FFont.Height); end else begin // drawing selection if (AutoSelect = False) and (FSelOffset <> 0) and (HideSelection = False) then DrawSelection; fpgCaret.UnSetCaret(Canvas); end; end; end; procedure TfpgBaseNumericEdit.SetTextColor(const AValue: TfpgColor); begin if FTextColor = AValue then Exit; //==> { Existing value might be negative so we must selectively change the FTextColor values } FOldColor := AValue; AdjustColorForNegativeValues; Repaint; end; procedure TfpgBaseNumericEdit.FormatEdit; begin SetShowThousand; AdjustColorForNegativeValues; end; constructor TfpgBaseNumericEdit.Create(AOwner: TComponent); begin inherited Create(AOwner); FAlignment := taRightJustify; FDecimalSeparator := DecimalSeparator; FThousandSeparator := ThousandSeparator; FShowThousand := True; FNegativeColor := clRed; FOldColor := TextColor; FMaxLimit := False; FMinLimit := False; end; { TfpgEditInteger } function TfpgEditInteger.GetValue: integer; var txt: string; begin if ShowThousand then begin if Copy(fText, 1, 1) = '-' then txt := Copy(ftext, 2, Length(fText) - 1) else txt := fText; while UTF8Pos(FThousandSeparator, txt) > 0 do txt := UTF8Copy(txt, 1, Pred(UTF8Pos(FThousandSeparator, txt))) +UTF8Copy(txt, Succ(UTF8Pos(FThousandSeparator, txt)), Length(txt) - UTF8Pos(FThousandSeparator, txt)); if UTF8Copy(fText, 1, 1) = '-' then fText := '-' + txt else fText := txt; end; if fText = '-' then begin Result := 0; Text := fText; end else begin if Text <> '' then begin try Result := StrToInt(fText); if FMaxLimit then begin if Result > FMaxValue then begin SetValue(FMaxValue); Result := FMaxValue; end; end; if FMinLimit then begin if Result < FMinValue then begin SetValue(FMinValue); Result := FMinValue; end; end; except on E: EConvertError do begin Result := 0; Text := ''; Invalidate; end; end; end else Result := 0; end; end; procedure TfpgEditInteger.SetValue(const AValue: integer); begin if not FMaxLimit and not FMinLimit then try Text := IntToStr(AValue); FormatEdit; except on E: EConvertError do Text := ''; end else begin if FMaxLimit and (AValue <= FMaxValue) then try Text := IntToStr(AValue); FormatEdit; except on E: EConvertError do Text := ''; end; if FMinLimit and (AValue >= FMinValue) then try Text := IntToStr(AValue); FormatEdit; except on E: EConvertError do Text := ''; end; end; end; procedure TfpgEditInteger.SetMaxValue(const AValue: integer); begin if AValue > FMinValue then FMaxValue:= AValue else FMaxValue := FMinValue; FMaxLimit:= True; end; procedure TfpgEditInteger.SetMinValue(const AValue: integer); begin if AValue < FMaxValue then FMinValue:= AValue else FMinValue := FMaxValue; FMinLimit:= True; end; procedure TfpgEditInteger.HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); var n: integer; begin n := Ord(AText[1]); if ((n >= 48) and (n <= 57) or (AText = '-') and (UTF8Pos(AText, Text) <= 0)) then consumed := False else Exit; //==> inherited HandleKeyChar(AText, shiftstate, consumed); if FMaxLimit then if GetValue > FMaxValue then SetValue(FMaxValue); if FMinLimit then if GetValue < FMinValue then SetValue(FMinValue); end; procedure TfpgEditInteger.HandleSetFocus; begin try if GetValue = 0 then Text := '' else Text := IntToStr(GetValue); except on E: EConvertError do Text := ''; end; inherited HandleSetFocus; end; procedure TfpgEditInteger.HandleKillFocus; begin try Text := IntToStr(GetValue); FormatEdit; except on E: EConvertError do Text := ''; end; inherited HandleKillFocus; end; procedure TfpgEditInteger.HandlePaint; begin inherited HandlePaint; // To make it more visible in the UI Designer if csDesigning in ComponentState then begin Canvas.SetTextColor(clInactiveWgFrame); Canvas.DrawString(2, 3, ''); end; end; constructor TfpgEditInteger.Create(AOwner: TComponent); begin inherited Create(AOwner); FDecimals := 0; end; { TfpgEditFloat } function TfpgEditFloat.GetValue: extended; var txt: string; begin if FDecimals > 0 then begin if UTF8Pos(FDecimalSeparator, fText) > 0 then if UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) > FDecimals then fText := UTF8Copy(fText, 1, UTF8Length(fText) - 1); end else if FDecimals = 0 then if UTF8Pos(FDecimalSeparator, fText) > 0 then fText := UTF8Copy(fText, 1, UTF8Length(fText) - 1); if FFixedDecimals > -1 then if UTF8Pos(FDecimalSeparator, fText) > 0 then if UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) > FFixedDecimals then fText := UTF8Copy(fText, 1, UTF8Length(fText) - 1); if ShowThousand then begin if Copy(fText, 1, 1) = '-' then // No need for utf8 version here txt := Copy(ftext, 2, Length(fText) - 1) else txt := fText; while UTF8Pos(FThousandSeparator, txt) > 0 do txt := UTF8Copy(txt, 1, Pred(UTF8Pos(FThousandSeparator, txt))) +UTF8Copy(txt, Succ(UTF8Pos(FThousandSeparator, txt)), UTF8Length(txt) - UTF8Pos(FThousandSeparator, txt)); if Copy(fText, 1, 1) = '-' then // No need for utf8 version here fText := '-' + txt else fText := txt; end; if fText = '-' then begin Result := 0; Text := fText; end else begin if fText <> '' then begin try Result := StrToFloat(fText); if FMaxLimit then begin if Result > FMaxValue then begin SetValue(FMaxValue); Result := FMaxValue; end; end; if FMinLimit then begin if Result < FMinValue then begin SetValue(FMinValue); Result := FMinValue; end; end; except on E: EConvertError do begin Result := 0; Text := ''; Invalidate; end; end; { try..except } end else Result := 0; end; end; procedure TfpgEditFloat.SetValue(const AValue: extended); begin if not FMaxLimit and not FMinLimit then try Text := FloatToStr(AValue); if FFixedDecimals > -1 then if UTF8Pos(FDecimalSeparator, Text) > 0 then while UTF8Length(Text)-UTF8Pos(FDecimalSeparator, Text) < FFixedDecimals do Text := Text + '0'; FormatEdit; except on E: EConvertError do Text := ''; end else begin if FMaxLimit and (AValue <= FMaxValue) then try Text := FloatToStr(AValue); if FFixedDecimals > -1 then if UTF8Pos(FDecimalSeparator, Text) > 0 then while UTF8Length(Text)-UTF8Pos(FDecimalSeparator, Text) < FFixedDecimals do Text := Text + '0'; FormatEdit; except on E: EConvertError do Text := ''; end; if FMinLimit and (AValue >= FMinValue) then try Text := FloatToStr(AValue); if FFixedDecimals > -1 then if UTF8Pos(FDecimalSeparator, Text) > 0 then while UTF8Length(Text)-UTF8Pos(FDecimalSeparator, Text) < FFixedDecimals do Text := Text + '0'; FormatEdit; except on E: EConvertError do Text := ''; end; end; end; procedure TfpgEditFloat.SetMaxValue(const AValue: extended); begin if AValue > FMinValue then FMaxValue:= AValue else FMaxValue := FMinValue; FMaxLimit := True; end; procedure TfpgEditFloat.SetMinValue(const AValue: extended); begin if AValue < FMaxValue then FMinValue:= AValue else FMinValue := FMaxValue; FMinLimit := True; end; procedure TfpgEditFloat.SetDecimals(const AValue: integer); begin if AValue < -1 then Exit; // => if FDecimals <> AValue then begin FDecimals := AValue; FFixedDecimals := -1; end; end; procedure TfpgEditFloat.SetFixedDecimals(const AValue: integer); begin if AValue < -1 then Exit; // => if FFixedDecimals <> AValue then begin FFixedDecimals := AValue; FDecimals := -1; end; end; procedure TfpgEditFloat.HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); var n: integer; begin n := Ord(AText[1]); if ((n >= 48) and (n <= 57) or (AText = '-') and (UTF8Pos(AText, Text) <= 0)) or ((AText = FDecimalSeparator) and (UTF8Pos(AText, Text) <= 0)) then consumed := False else Exit; //==> inherited HandleKeyChar(AText, shiftstate, consumed); if FMaxLimit then if GetValue > FMaxValue then SetValue(FMaxValue); if FMinLimit then if GetValue < FMinValue then SetValue(FMinValue); end; procedure TfpgEditFloat.HandleSetFocus; begin try if GetValue = 0 then fText := '' else begin fText := FloatToStr(GetValue); if FFixedDecimals > -1 then begin if UTF8Pos(FDecimalSeparator, fText) = 0 then fText := fText + FDecimalSeparator; while (UTF8Length(fText) - (UTF8Pos(FDecimalSeparator, fText)) < FFixedDecimals) do fText := fText +'0'; end; end; except on E: EConvertError do fText := ''; end; inherited HandleSetFocus; end; procedure TfpgEditFloat.HandleKillFocus; begin try fText := FloatToStr(GetValue); if FFixedDecimals > -1 then begin if UTF8Pos(FDecimalSeparator, fText) = 0 then fText := fText + FDecimalSeparator; while (UTF8Length(fText) - (UTF8Pos(FDecimalSeparator, fText)) < FFixedDecimals) do fText := fText +'0'; end; FormatEdit; except on E: EConvertError do fText := ''; end; inherited HandleKillFocus; end; procedure TfpgEditFloat.HandlePaint; begin inherited HandlePaint; // To make it more visible in the UI Designer if csDesigning in ComponentState then begin Canvas.SetTextColor(clInactiveWgFrame); Canvas.DrawString(2, 3, ''); end; end; constructor TfpgEditFloat.Create(AOwner: TComponent); begin inherited Create(AOwner); FDecimals := -1; FFixedDecimals := -1; end; { TfpgEditCurrency } function TfpgEditCurrency.GetValue: Currency; var txt: string; begin if FDecimals > 0 then if UTF8Pos(FDecimalSeparator, fText) > 0 then if UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) > FDecimals then fText := UTF8Copy(fText, 1, UTF8Length(fText) - 1); if ShowThousand then begin if Copy(fText, 1, 1) = '-' then txt := Copy(ftext, 2, Length(fText) - 1) else txt := fText; while UTF8Pos(FThousandSeparator, txt) > 0 do txt := UTF8Copy(txt, 1, Pred(UTF8Pos(FThousandSeparator, txt))) +UTF8Copy(txt, Succ(UTF8Pos(FThousandSeparator, txt)), UTF8Length(txt) - UTF8Pos(FThousandSeparator, txt)); if Copy(fText, 1, 1) = '-' then fText := '-' + txt else fText := txt; end; if fText = '-' then begin Result := 0; Text:= fText; end else if fText > '' then try Result := StrToCurr(fText); if FMaxLimit then begin if Result > FMaxValue then begin SetValue(FMaxValue); Result := FMaxValue; end; end; if FMinLimit then begin if Result < FMinValue then begin SetValue(FMinValue); Result := FMinValue; end; end; except on E: EConvertError do begin Result := 0; Text := ''; Invalidate; end; end else Result := 0; end; procedure TfpgEditCurrency.SetValue(const AValue: Currency); begin if not FMaxLimit and not FMinLimit then try Text := FloatToStrF(AValue, ffFixed, -1, FDecimals); FormatEdit; except on E: EConvertError do Text := ''; end else begin if FMaxLimit and (AValue <= FMaxValue) then try Text := FloatToStrF(AValue, ffFixed, -1, FDecimals); FormatEdit; except on E: EConvertError do Text := ''; end; if FMinLimit and (AValue >= FMinValue) then try Text := FloatToStrF(AValue, ffFixed, -1, FDecimals); FormatEdit; except on E: EConvertError do Text := ''; end; end; end; procedure TfpgEditCurrency.SetMaxValue(const AValue: Currency); begin if AValue > FMinValue then FMaxValue:= AValue else FMaxValue := FMinValue; FMaxLimit:= True; end; procedure TfpgEditCurrency.SetMinValue(const AValue: Currency); begin if AValue < FMaxValue then FMinValue:= AValue else FMinValue := FMaxValue; FMinLimit:= True; end; procedure TfpgEditCurrency.SetDecimals(AValue: integer); begin if (AValue < 0) or (AValue > 4) then Exit; // => if FDecimals <> AValue then FDecimals := AValue end; procedure TfpgEditCurrency.HandleKeyPress(var keycode: word; var shiftstate: TShiftState; var consumed: Boolean); begin case keycode of keyReturn, keyPEnter, keyTab: if FDecimals > 0 then begin if Pos(FDecimalSeparator, fText) = 0 then begin fText := fText + FDecimalSeparator; Inc(FCursorPos); end; if UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) < FDecimals then while UTF8Length(fText)-UTF8Pos(FDecimalSeparator, fText) < FDecimals do begin fText := fText + '0'; Inc(FCursorPos); end; end; end; inherited HandleKeyPress(keycode,shiftstate,consumed); end; procedure TfpgEditCurrency.HandleKeyChar(var AText: TfpgChar; var shiftstate: TShiftState; var consumed: Boolean); var n: integer; begin n := Ord(AText[1]); if ((n >= 48) and (n <= 57) or (AText = '-') and (UTF8Pos(AText, Text) <= 0)) or ((AText = FDecimalSeparator) and (UTF8Pos(AText, Text) <= 0)) then consumed := False else Exit; //==> inherited HandleKeyChar(AText, shiftstate, consumed); if FMaxLimit then if GetValue > FMaxValue then SetValue(FMaxValue); if FMinLimit then if GetValue < FMinValue then SetValue(FMinValue); end; procedure TfpgEditCurrency.HandleSetFocus; begin try if GetValue = 0 then Text := '' else Text := FloatToStrF(GetValue, ffFixed, -1, FDecimals); except on E: EConvertError do Text := ''; end; inherited HandleSetFocus; end; procedure TfpgEditCurrency.HandleKillFocus; begin try Text := FloatToStrF(GetValue, ffFixed, -1, FDecimals); FormatEdit; except on E: EConvertError do Text := ''; end; inherited HandleKillFocus; end; procedure TfpgEditCurrency.HandlePaint; begin inherited HandlePaint; // To make it more visible in the UI Designer if csDesigning in ComponentState then begin Canvas.SetTextColor(clInactiveWgFrame); Canvas.DrawString(2, 3, ''); end; end; constructor TfpgEditCurrency.Create(AOwner: TComponent); begin inherited Create(AOwner); FDecimals := 2; end; end.