* Removed the old Xlib Font support form fpGFX/X11

* Fixed the Xtf font support in fpGFX/X11 to use the UTF-8 Xtf functions instead of the UTF-16 functions.
* Fixed the GUI TFEdit by removing all usage of the WideString type

5 files changed, 45 insertions, 163 deletions

diff --git a/examples/gui/widgettest/widgettest.pas b/examples/gui/widgettest/widgettest.pas
index 704e1619..2435200e 100644
--- a/examples/gui/widgettest/widgettest.pas
+++ b/examples/gui/widgettest/widgettest.pas
@@ -666,7 +666,11 @@ end;
 
 procedure TEditForm.GrayCheckBox2Click(Sender: TObject);
 begin
-  Edit2.Enabled := not GrayCheckBox2.Checked;
+//  Edit2.Enabled := not GrayCheckBox2.Checked;
+  if GrayCheckBox2.Checked then
+    Edit2.PasswordChar := #0
+  else
+    Edit2.PasswordChar := '*';
 end;
 
 procedure TEditForm.cbBorderStyleClick(Sender: TObject);
@@ -695,6 +699,7 @@ begin
   inherited Create(AOwner);
   LoadForm(self);
   Edit1.Text := 'Gráficas Magnificacion! Teste';
+  Edit2.Text := 'Gráficas';
   Edit2.PasswordChar := '*';
 end;
 
diff --git a/gfx/fputf8utils.pas b/gfx/fputf8utils.pas
index 0bad5380..f04c4212 100644
--- a/gfx/fputf8utils.pas
+++ b/gfx/fputf8utils.pas
@@ -16,6 +16,7 @@ uses
 
 function UTF8Pos(const SearchForText, SearchInText: string): integer;
 function UTF8Copy(const s: string; StartCharIndex, CharCount: integer): string;
+function UTF8Length(const s: string): integer;
 function UTF8Length(p: PChar; ByteCount: integer): integer;
 function UTF8CharStart(UTF8Str: PChar; Len, Index: integer): PChar;
 function UTF8CharacterLength(p: PChar): integer;
@@ -55,6 +56,11 @@ begin
  end;
 end;
 
+function UTF8Length(const s: string): integer;
+begin
+  Result := UTF8Length(PChar(s),length(s));
+end;
+
 function UTF8Length(p: PChar; ByteCount: integer): integer;
 var
   CharLen: LongInt;
diff --git a/gfx/x11/gfx_x11.pas b/gfx/x11/gfx_x11.pas
index 1deba25a..862ea1e5 100644
--- a/gfx/x11/gfx_x11.pas
+++ b/gfx/x11/gfx_x11.pas
@@ -23,17 +23,13 @@ unit GFX_X11;
   {$mode objfpc}{$H+}
 {$endif}
 
-{ Disable this, if you do not want Xft to be used for drawing text }
-{$Define XftSupport}
 
 interface
 
 uses
   SysUtils, Classes,   // FPC units
   X, XLib, XUtil,     // X11 units
-  {$IFDEF XftSupport}
   unitxft,            // Xft font support
-  {$ENDIF}
   GfxBase,            // fpGFX units
   GELDirty;           // fpGFX emulation layer
 
@@ -64,22 +60,14 @@ type
 
   TX11FontResourceImpl = class(TObject)
   private
-    {$IFDEF XftSupport}
     FFontData: PXftFont;
-    {$ELSE}
-    FFontData: PXFontStruct;
-    {$ENDIF}
   public
     constructor Create(const Descriptor: String);
     destructor  Destroy; override;
     function    GetAscent: integer;
     function    GetDescent: integer;
     function    GetHeight: integer;
-    {$IFDEF XftSupport}
     property    FontData: PXftFont read FFontData;
-    {$ELSE}
-    property    FontData: PXFontStruct read FFontData write FFontData;
-    {$ENDIF}
   end;
   
 
@@ -115,9 +103,7 @@ type
     FRegion: TRegion;
     FDefaultFont: TX11FontResourceImpl;
     FFontStruct: TX11FontResourceImpl;
-    {$IFDEF XftSupport}
     FXftDraw: PXftDraw;
-    {$ENDIF}
     FStateStackpointer: PX11CanvasState;
     FColormap: TColormap;
     FCurColor: TGfxPixel;
@@ -286,9 +272,7 @@ implementation
 uses
   GELImage
   ,fpGFX
-  {$IFDEF XftSupport}
-//  ,schar16            // Unicode support
-  {$ENDIF}
+  ,fpUTF8Utils
   ;
 
 resourcestring
@@ -344,14 +328,9 @@ begin
     LineSolid, CapNotLast, JoinMiter);
 
   FFontStruct := FDefaultFont;
-  {$IFDEF XftSupport}
-    FXftDraw := XftDrawCreate(GFApplication.Handle, Handle,
-      XDefaultVisual(GFApplication.Handle, XDefaultScreen(GFApplication.Handle)),
-      XDefaultColormap(GFApplication.Handle, XDefaultScreen(GFApplication.Handle)));
-  {$ELSE}
-  if Assigned(FFontStruct.FontData) then
-    XSetFont(GFApplication.Handle, GC, FFontStruct.FontData^.FID);
-  {$ENDIF}
+  FXftDraw := XftDrawCreate(GFApplication.Handle, Handle,
+    XDefaultVisual(GFApplication.Handle, XDefaultScreen(GFApplication.Handle)),
+    XDefaultColormap(GFApplication.Handle, XDefaultScreen(GFApplication.Handle)));
 
   FRegion := XCreateRegion;
   Resized(Width, Height);	// Set up a proper clipping region
@@ -359,10 +338,9 @@ end;
 
 destructor TX11Canvas.Destroy;
 begin
-  {$IFDEF XftSupport}
   if FXftDraw <> nil then
     XftDrawDestroy(FXftDraw);
-  {$ENDIF}
+
   XDestroyRegion(Region);
   if Assigned(GC) then
     XFreeGC(GFApplication.Handle, GC);
@@ -499,12 +477,7 @@ begin
       Exit; //==>
     FFontStruct := TX11Font(AFont).FontStruct;
   end;
-  {$IFDEF XftSupport}
-    {$Note Still needs testing }
-    FFontStruct := TX11Font(AFont).FontStruct;
-  {$ELSE}
-  XSetFont(GFApplication.Handle, GC, FFontStruct.FontData^.FID);
-  {$ENDIF}
+  FFontStruct := TX11Font(AFont).FontStruct;
 end;
 
 procedure TX11Canvas.SetLineStyle(ALineStyle: TGfxLineStyle);
@@ -526,7 +499,6 @@ begin
   end;
 end;
 
-
 procedure TX11Canvas.DoDrawArc(const ARect: TRect; StartAngle, EndAngle: Single);
 begin
   with ARect do
@@ -535,7 +507,6 @@ begin
       Round(StartAngle * 64), Round((EndAngle - StartAngle) * 64));
 end;
 
-
 procedure TX11Canvas.DoDrawCircle(const ARect: TRect);
 begin
   with ARect do
@@ -543,13 +514,11 @@ begin
       Left, Top, Right - Left - 1, Bottom - Top - 1, 0, 23040);
 end;
 
-
 procedure TX11Canvas.DoDrawLine(const AFrom, ATo: TPoint);
 begin
   XDrawLine(GFApplication.Handle, Handle, GC, AFrom.x, AFrom.y, ATo.x, ATo.y);
 end;
 
-
 procedure TX11Canvas.DrawPolyLine(const Coords: array of TPoint);
 var
   Points: PXPoint;
@@ -573,7 +542,6 @@ begin
   FreeMem(Points);
 end;
 
-
 procedure TX11Canvas.DoDrawRect(const ARect: TRect);
 begin
   with ARect do
@@ -581,13 +549,11 @@ begin
       Right - Left - 1, Bottom - Top - 1);
 end;
 
-
 procedure TX11Canvas.DoDrawPoint(const APoint: TPoint);
 begin
   XDrawPoint(GFApplication.Handle, Handle, GC, APoint.x, APoint.y);
 end;
 
-
 procedure TX11Canvas.DoFillRect(const ARect: TRect);
 begin
   with ARect do
@@ -610,22 +576,14 @@ begin
   XFillPolygon(GFApplication.Handle, Handle, GC, @pts, 3, 0, CoordModeOrigin);
 end;
 
-
 function TX11Canvas.FontCellHeight: Integer;
 begin
   Result := FFontStruct.GetHeight;
 end;
 
-
 function TX11Canvas.TextExtent(const AText: String): TSize;
 var
-  {$IFDEF XftSupport}
-  extents : TXGlyphInfo;
-  WideText: WideString;
-  {$ELSE}
-  Direction, FontAscent, FontDescent: LongInt;
-  CharStruct: TXCharStruct;
-  {$ENDIF}
+  extents: TXGlyphInfo;
 begin
   if Length(AText) = 0 then
   begin
@@ -634,29 +592,16 @@ begin
   end
   else
   begin
-    {$IFDEF XftSupport}
-    WideText := Utf8Decode(AText);
-//    XftTextExtents8(GFApplication.Handle, FFontStruct.FontData, PChar(AText), Length(AText), extents);
-    XftTextExtents16(GFApplication.Handle, FFontStruct.FontData, PChar(WideText), Length(WideText), extents);
+    XftTextExtentsUtf8(GFApplication.Handle, FFontStruct.FontData, PChar(AText), Length(AText), extents);
     Result.cx := extents.xOff;
     Result.cy := extents.yOff;
-    {$ELSE}
-    XQueryTextExtents(GFApplication.Handle, XGContextFromGC(GC),
-      PChar(AText), Length(AText),
-      @Direction, @FontAscent, @FontDescent, @CharStruct);
-    Result.cx := CharStruct.Width;
-    Result.cy := CharStruct.Ascent + CharStruct.Descent;
-    {$ENDIF}
   end;
 end;
 
-
 procedure TX11Canvas.DoTextOut(const APosition: TPoint; const AText: String);
-  {$IFDEF XftSupport}
 var
   fntColor: TXftColor;
-  WideText: WideString;
-
+    //--------------
     procedure SetXftColor(c: TGfxPixel; var colxft: TXftColor);
     begin
       colxft.color.blue  := (c and $000000FF) shl 8;
@@ -669,33 +614,16 @@ var
       colxft.pixel := 0;
     end;
 
-  {$ENDIF}
 begin
-  if Length(AText) < 1 then
+  if UTF8Length(AText) < 1 then
     Exit; //==>
     
-  {$IFDEF XftSupport}
-  WideText := Utf8Decode(AText);
-
   SetXftColor(FCurColor,fntColor);
   XftDrawSetClip(FXftDraw, FRegion);
-//  XftDrawString8(FXftDraw, fntColor, FFontStruct.FontData, APosition.x,
-//      Aposition.y + FFontStruct.GetAscent, PChar(AText), Length(AText));
-
-  XftDrawString16(FXftDraw, fntColor, FFontStruct.FontData, APosition.x,
-      Aposition.y + FFontStruct.GetAscent, PChar(WideText), Length(WideText));
-
-// pasgf implementation
-//  XftDrawString16(FXftDraw, FColorTextXft, FCurFontRes.Handle, x,
-//      y+FCurFontRes.GetAscent, @txt[1], Length(txt) )
-
-  {$ELSE}
-  XDrawString(GFApplication.Handle, Handle, GC, APosition.x,
-    APosition.y + FFontStruct.GetAscent, PChar(AText), Length(AText));
-  {$ENDIF}
+  XftDrawStringUtf8(FXftDraw, fntColor, FFontStruct.FontData, APosition.x,
+      Aposition.y + FFontStruct.GetAscent, PChar(AText), Length(AText));
 end;
 
-
 procedure TX11Canvas.DoCopyRect(ASource: TFCustomCanvas; const ASourceRect: TRect;
   const ADestPos: TPoint);
 var
@@ -725,7 +653,6 @@ begin
       ASourceRect.Bottom - ASourceRect.Top, ADestPos.x, ADestPos.y);
 end;
 
-
 procedure TX11Canvas.DoMaskedCopyRect(ASource, AMask: TFCustomCanvas;
   const ASourceRect: TRect; const AMaskPos, ADestPos: TPoint);
 var
@@ -1211,13 +1138,11 @@ begin
   DoBreakRun := False;
 end;
 
-
 procedure TX11Application.Quit;
 begin
   DoBreakRun := True;
 end;
 
-
 function TX11Application.FindWindowByXID(XWindowID: X.TWindow): TFCustomWindow;
 var
   i: Integer;
@@ -1278,21 +1203,11 @@ begin
   if not Assigned(Handle) then
     raise EX11Error.CreateFmt(SOpenDisplayFailed, [DisplayName]);
 
-  {$IFDEF XftSupport}
 //  FDefaultFont := TX11FontResourceImpl.Create('Arial-10');
-  FDefaultFont := TX11FontResourceImpl.Create('Sans-9');
-  {$ELSE}
-  FDefaultFont := TX11FontResourceImpl.Create('-adobe-helvetica-medium-r-normal--*-120-*-*-*-*-iso8859-1');
-  {$ENDIF}
+  FDefaultFont := TX11FontResourceImpl.Create('Sans-10');
 
   if not Assigned(FDefaultFont) then
-  begin
-    {$IFNDEF XftSupport}
-    FDefaultFont := TX11FontResourceImpl.Create('-*-fixed-*-*-*-*-*-*-*-*-*-*-iso8859-*');
-    {$ENDIF}
-    if not Assigned(FDefaultFont) then
-      raise EX11Error.Create(SNoDefaultFont);
-  end;
+    raise EX11Error.Create(SNoDefaultFont);
 end;
 
 { TX11Window }
@@ -1435,7 +1350,6 @@ begin
 //    XSetTransientForHint(GFApplication.Handle, Handle, Handle);
 end;
 
-
 destructor TX11Window.Destroy;
 begin
   if Assigned(OnClose) then
@@ -1454,7 +1368,6 @@ begin
   inherited Destroy;
 end;
 
-
 procedure TX11Window.SetPosition(const APosition: TPoint);
 var
   Supplied: PtrInt;
@@ -1496,7 +1409,6 @@ begin
   XMoveWindow(GFApplication.Handle, Handle, lx, ly);
 end;
 
-
 procedure TX11Window.SetSize(const ASize: TSize);
 begin
   // !!!: Implement this properly
@@ -1504,7 +1416,6 @@ begin
   SetClientSize(ASize);
 end;
 
-
 procedure TX11Window.SetMinMaxSize(const AMinSize, AMaxSize: TSize);
 begin
   // !!!: Implement this properly
@@ -1512,7 +1423,6 @@ begin
   SetMinMaxClientSize(AMinSize, AMaxSize);
 end;
 
-
 procedure TX11Window.SetClientSize(const ASize: TSize);
 var
   ChangeMask: Cardinal;
@@ -1536,7 +1446,6 @@ begin
     XConfigureWindow(GFApplication.Handle, Handle, ChangeMask, @Changes);
 end;
 
-
 procedure TX11Window.SetMinMaxClientSize(const AMinSize, AMaxSize: TSize);
 var
   Supplied: PtrInt;
@@ -1577,7 +1486,6 @@ begin
   XFree(SizeHints);
 end;
 
-
 { Makes the window visible and raises it to the top of the stack. }
 procedure TX11Window.Show;
 begin
@@ -1585,7 +1493,6 @@ begin
   XMapRaised(GFApplication.Handle, Handle);
 end;
 
-
 procedure TX11Window.Invalidate(const ARect: TRect);
 begin
   GFApplication.DirtyList.AddRect(Self, ARect);
@@ -1755,9 +1662,6 @@ begin
   end;
 end;
 
-
-// protected methods
-
 function TX11Window.GetTitle: String;
 var
   s: PChar;
@@ -1767,13 +1671,11 @@ begin
   XFree(s);
 end;
 
-
 procedure TX11Window.SetTitle(const ATitle: String);
 begin
   XStoreName(GFApplication.Handle, Handle, PChar(ATitle));
 end;
 
-
 procedure TX11Window.DoSetCursor;
 const
   CursorTable: array[TFCursor] of Integer = (
@@ -1802,7 +1704,6 @@ begin
   XDefineCursor(GFApplication.Handle, Handle, FCurCursorHandle);
 end;
 
-
 function TX11Window.ConvertShiftState(AState: Cardinal): TShiftState;
 begin
   Result := [];
@@ -1898,7 +1799,6 @@ begin
 {$ENDIF}
 end;
 
-
 procedure TX11Window.UpdateMotifWMHints;
 type
   PMotifWmHints = ^TMotifWmHints;
@@ -1967,10 +1867,6 @@ begin
     XFree(Hints);
 end;
 
-
-{ private methods }
-
-
 function TX11Window.StartComposing(const Event: TFEvent): TKeySym;
 begin
   SetLength(FComposeBuffer,
@@ -1978,7 +1874,6 @@ begin
       SizeOf(FComposeBuffer) - 1, @Result, @FComposeStatus));
 end;
 
-
 procedure TX11Window.EndComposing;
 var
   i: Integer;
@@ -1988,7 +1883,6 @@ begin
       OnKeyChar(Self, FComposeBuffer[i]);
 end;
 
-
 procedure TX11Window.Expose(var Event: TXExposeEvent);
 {var
   IsNotEmpty: Boolean;
@@ -2046,7 +1940,6 @@ begin
   end;
 end;
 
-
 procedure TX11Window.ClientMessage(var Event: TXClientMessageEvent);
 begin
   if Event.message_type = GFApplication.FWMProtocols then
@@ -2070,7 +1963,6 @@ begin
   Result.height := ARect.Bottom - ARect.Top;
 end;
 
-
 function XRectToRect(const ARect: TXRectangle): TRect;
 begin
   Result.Left   := ARect.x;
@@ -2079,7 +1971,6 @@ begin
   Result.Bottom := ARect.y + ARect.height;
 end;
 
-
 function GetXEventName(Event: LongInt): String;
 const
   EventNames: array[2..34] of String = (
@@ -2102,11 +1993,7 @@ end;
 
 constructor TX11FontResourceImpl.Create(const Descriptor: String);
 begin
-  {$IFDEF XftSupport}
   FFontData := XftFontOpenName(GFApplication.Handle, XDefaultScreen(GFApplication.Handle), PChar(Descriptor));
-  {$ELSE}
-  FFontData := XLoadQueryFont(GFApplication.Handle, PChar(Descriptor));
-  {$ENDIF}
   if not Assigned(FFontData) then
     raise EX11Error.CreateFmt(SFontCreationFailed, [Descriptor]);
 end;
@@ -2114,15 +2001,7 @@ end;
 destructor TX11FontResourceImpl.Destroy;
 begin
   if Assigned(FFontData) then
-  begin
-    {$IFDEF XftSupport}
     XftFontClose(GFApplication.Handle, FFontData);
-    {$ELSE}
-    if FFontData^.fid <> 0 then
-      XUnloadFont(GFApplication.Handle, FFontData^.fid);
-    XFreeFontInfo(nil, FFontData, 0);
-    {$ENDIF}
-  end;
   inherited Destroy;
 end;
 
diff --git a/gfx/x11/unitxft.pas b/gfx/x11/unitxft.pas
index 10958261..a4b1f6c0 100644
--- a/gfx/x11/unitxft.pas
+++ b/gfx/x11/unitxft.pas
@@ -1,6 +1,6 @@
 {
     fpGFX  -  Free Pascal Graphics Library
-    Copyright (C) 2006 by Graeme Geldenhuys 
+    Copyright (C) 2006-2007 by Graeme Geldenhuys
       member of the fpGFX development team.
 
     Xft interface functions
@@ -108,11 +108,13 @@ function XftDrawPicture(draw : PXftDraw) : TPicture; cdecl;
 function XftFontOpenName(display : PXDisplay; scr : integer; par3 : PChar) : PXftFont; cdecl;
 procedure XftFontClose(display : PXDisplay; fnt : PXftFont); cdecl;
 
+procedure XftDrawStringUtf8(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl;
 procedure XftDrawString8(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl;
 procedure XftDrawString16(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl;
 
-procedure XftTextExtents16(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl;
+procedure XftTextExtentsUtf8(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl;
 procedure XftTextExtents8(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl;
+procedure XftTextExtents16(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl;
 
 //function XftGlyphExists(display : PXDisplay; fnt : PXftFont; ch : integer) : longbool; cdecl;
 
@@ -124,8 +126,11 @@ function XftListFonts(display : PXDisplay; screen : integer; params : array of c
 function XftNameUnparse(pat : PFcPattern; dest : PChar; destlen : integer) : boolean; cdecl;
 procedure FcFontSetDestroy(fsp : PFcFontSet); cdecl;
 
+
+
 implementation
 
+
 function XftDrawCreate(display : PXDisplay; win : TXID; vis : PVisual; colorm : longint) : PXftDraw; cdecl; external;
 procedure XftDrawChange(xftd : PXftDraw; win : TXID); cdecl; external;
 procedure XftDrawDestroy(draw : PXftDraw); cdecl; external;
@@ -135,11 +140,13 @@ function XftDrawPicture(draw : PXftDraw) : TPicture; cdecl; external;
 function XftFontOpenName(display : PXDisplay; scr : integer; par3 : PChar) : PXftFont; cdecl; external;
 procedure XftFontClose(display : PXDisplay; fnt : PXftFont); cdecl; external;
 
+procedure XftDrawStringUtf8(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl; external;
 procedure XftDrawString8(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl; external;
 procedure XftDrawString16(draw : PXftDraw; var col : TXftColor; fnt : PXftFont; x,y : integer; txt : PChar; len : integer); cdecl; external;
 
-procedure XftTextExtents16(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl; external;
+procedure XftTextExtentsUtf8(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl; external;
 procedure XftTextExtents8(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl; external;
+procedure XftTextExtents16(display : PXDisplay; fnt : PXftFont; txt : PChar; len : integer; var extents : TXGlyphInfo); cdecl; external;
 
 //function XftGlyphExists(display : PXDisplay; fnt : PXftFont; ch : integer) : longbool; cdecl; external;
 
diff --git a/gui/fpguiedit.inc b/gui/fpguiedit.inc
index 6ad17cb7..79bb2a70 100644
--- a/gui/fpguiedit.inc
+++ b/gui/fpguiedit.inc
@@ -204,24 +204,21 @@ begin
 end;
 
 procedure TFCustomEdit.EvKeyPressed(Key: Word; Shift: TShiftState);
-var
-  WideText: WideString;
 begin
   if Shift * [ssShift, ssAlt, ssCtrl, ssMeta, ssSuper, ssHyper, ssAltGr] = [] then
   begin
-    WideText := UTF8Decode(Text);
     // Normal typing - no selections
     case Key of
       keyLeft, keyUp:
         if CursorPos > 0 then
 	        CursorPos := CursorPos - 1;
       keyRight, keyDown:
-	      if CursorPos < Length(WideText) then
+	      if CursorPos < UTF8Length(FText) then
 	        CursorPos := CursorPos + 1;
       keyHome:
         CursorPos := 0;
       keyEnd:
-        CursorPos := Length(WideText);
+        CursorPos := UTF8Length(FText);
       else
         inherited EvKeyPressed(Key, Shift);
     end;
@@ -255,27 +252,23 @@ end;
 
 
 procedure TFCustomEdit.EvKeyChar(KeyChar: Char);
-var
-  WideText: WideString;
 begin
-  WideText := UTF8Decode(FText);
-
   case KeyChar of
     #8:      { Backspace }
       if FCursorPos > 0 then
       begin
-        FText := UTF8Copy(FText, 1, FCursorPos - 1) + UTF8Copy(FText, FCursorPos + 1, Length(WideText));
+        FText := UTF8Copy(FText, 1, FCursorPos - 1) + UTF8Copy(FText, FCursorPos + 1, UTF8Length(FText));
         FCursorPos := FCursorPos - 1;
       end;
     #127:    { Del }
-      if FCursorPos < Length(WideText) then
+      if FCursorPos < UTF8Length(FText) then
       begin
-        FText := UTF8Copy(FText, 1, FCursorPos) + UTF8Copy(FText, FCursorPos + 2, Length(WideText));
+        FText := UTF8Copy(FText, 1, FCursorPos) + UTF8Copy(FText, FCursorPos + 2, UTF8Length(FText));
         Redraw;
       end;
     #32..#126, #128..#255:
       begin
-        FText := UTF8Copy(FText, 1, FCursorPos) + KeyChar + UTF8Copy(FText, CursorPos + 1, Length(WideText));
+        FText := UTF8Copy(FText, 1, FCursorPos) + KeyChar + UTF8Copy(FText, CursorPos + 1, UTF8Length(FText));
         FCursorPos := FCursorPos + 1;
       end;
     else
@@ -301,13 +294,10 @@ begin
 end;
 
 procedure TFCustomEdit.SetText(const AText: String);
-var
-  WideText: WideString;
 begin
   inherited SetText(AText);
-  WideText      := Utf8Decode(FText);
   FSelOffset    := 0;
-  FCursorPos    := Length(WideText);
+  FCursorPos    := UTF8Length(FText);
   FSelStart     := FCursorPos;
   FDrawOffset   := 0;
   AdjustCursor;
@@ -346,7 +336,6 @@ var
   n: integer;
   cx: integer;
   lText: string;
-  WideText: WideString;
 begin
   if (pEvent.Button = mbLeft) then
   begin
@@ -356,12 +345,11 @@ begin
 
     // Make sure we work with the correct displayed text
     lText := GetDrawText;
-    WideText := UTF8Decode(lText);
 
     cp    := FCursorPos;
     cpx   := FindForm.Wnd.Canvas.TextWidth(UTF8Copy(lText, 1, FCursorPos)) - FDrawOffset + lSideMargin;
 
-    for n := 0 to Length(WideText) do
+    for n := 0 to UTF8Length(lText) do
     begin
       cx := FindForm.Wnd.Canvas.TextWidth(UTF8Copy(lText, 1, n)) - FDrawOffset + lSideMargin;
       if abs(cx - pEvent.Position.x) < abs(cpx - pEvent.Position.x) then
@@ -430,15 +418,12 @@ end;
 
 // Return the correct text to be displayed
 function TFCustomEdit.GetDrawText: string;
-var
-  WideText: WideString;
 begin
   if FPasswordChar = #0 then
     Result := FText
   else
   begin
-    WideText := Utf8Decode(FText);
-    Result := StringOfChar(FPasswordChar, Length(WideText));
+    Result := StringOfChar(FPasswordChar, UTF8Length(FText));
   end;
 end;