Сохранение свойств шрифтов

Code:

//Saving and restoring font properties in the registry

Uses typInfo, Registry;

Function GetFontProp( anObj: TObject) : TFont;

Var

PInfo: PPropInfo;

Begin

{ try to get a pointer to the property information for a property with the

   name 'Font'. TObject.ClassInfo returns a pointer to the RTTI table,

which

   we need to pass to GetPropInfo }

PInfo := GetPropInfo( anObj.ClassInfo, 'font' );

Result := Nil;

If PInfo <> Nil Then

   { found a property with this name, check if it has the correct type }

   If (PInfo^.Proptype^.Kind = tkClass) and

      GetTypeData(PInfo^.Proptype^)^.ClassType.InheritsFrom(TFont)

   Then

     Result := TFont(GetOrdProp( anObj, PInfo ));

End; { GetfontProp }

Function StyleToString( styles: TFontStyles ): String;

var

style: TFontStyle;

Begin

Result := '[';

For style := Low(style) To High(style) Do Begin

   If style IN styles Then Begin

     If Length(result) > 1 Then

       result := result + ',';

     result := result + GetEnumname( typeInfo(TFontStyle), Ord(style));

   End; { If }

End; { For }

Result := Result + ']';

End; { StyleToString }

Function StringToStyle( S: String ): TFontStyles;

Var

sl   : TStringlist;

style: TfontStyle;

i    : Integer;

Begin

Result := [];

If Length(S) < 2 Then Exit;

If S[1] = '[' Then

   Delete(S, 1, 1);

If S[Length(S)] = ']' Then

   Delete(S, Length(S), 1);

If Length(S) = 0 Then Exit;

sl:= TStringlist.Create;

try

   sl.commatext := S;

   For i := 0 To sl.Count-1 Do Begin

     try

       style := TFontStyle( GetEnumValue( Typeinfo(TFontStyle), sl[i] ));

       Include( Result, style );

     except

     end;

   End; { For }

finally

   sl.free

end;

End; { StringToStyle }

Procedure SaveFontProperties( forControl: TControl;

                             toIni: TRegInifile;

                             const section: String );

Var

font: TFont;

basename: String;

Begin

Assert( Assigned( toIni ));

font := GetFontProp( forControl );

If not Assigned( font ) Then Exit;

basename := forControl.Name+'.Font.';

toIni.WriteInteger( Section, basename+'Charset', font.charset );

toIni.WriteString ( Section, basename+'Name', font.Name );

toIni.WriteInteger( Section, basename+'Size', font.size );

toIni.WriteString ( Section, basename+'Color',

                     '$'+IntToHex(font.color,8));

toIni.WriteString ( Section, basename+'Style',

                     StyleToString( font.Style ));

End; { SaveFontProperties }

Procedure RestoreFontProperties( forControl: TControl;

                            toIni: TRegInifile;

                            const section: String );

Var

font: TFont;

basename: String;

Begin

Assert( Assigned( toIni ));

font := GetFontProp( forControl );

If not Assigned( font ) Then Exit;

basename := forControl.Name+'.Font.';

font.Charset :=

   toIni.ReadInteger( Section, basename+'Charset', font.charset );

font.Name :=

   toIni.ReadString ( Section, basename+'Name', font.Name );

font.Size :=

   toIni.ReadInteger( Section, basename+'Size', font.size );

font.Color := TColor( StrToInt(

   toIni.ReadString ( Section, basename+'Color',

                     '$'+IntToHex(font.color,8))

                     ));

font.Style := StringToStyle(

   toIni.ReadString ( Section, basename+'Style',

                      StyleToString( font.Style ))

                     );

End; { RestoreFontProperties }

Code:

type

TFontWrapper= class( TComponent )

private

   FFont: TFont;

   Constructor Create( aOwner: TComponent ); override;

   Destructor Destroy; override;

   Procedure SetFont( value: TFont );

published

   property Font: TFont read FFont write SetFont;

end;

{ TFontWrapper }

constructor TFontWrapper.Create(aOwner: TComponent);

begin

inherited;

FFont :=TFont.Create;

end;

destructor TFontWrapper.Destroy;

begin

FFOnt.Free;

inherited;

end;

procedure TFontWrapper.SetFont(value: TFont);

begin

FFont.Assign( value );

end;

procedure TForm1.Button1Click(Sender: TObject);

var

helper: TFontWrapper;

begin

If not Assigned(ms) then

   ms:= TMemoryStream.Create

Else

   ms.Clear;

helper := TFontWrapper.Create( nil );

try

   helper.font := label1.font;

   ms.WriteComponent( helper );

finally

   helper.free;

end; { finally }

label1.font.size := label1.font.size + 2;

end;

procedure TForm1.Button2Click(Sender: TObject);

var

helper: TFontWrapper;

begin

If not Assigned(ms) then Exit;

ms.Position := 0;

helper := TFontWrapper.Create( nil );

try

   ms.ReadComponent( helper );

   label1.font := helper.font;

finally

   helper.free;

end; { finally }

end;

Code:

function FontToStr(font: TFont): string;

procedure yes(var str: string);

begin

   str := str + 'y';

end;

procedure no(var str: string);

begin

   str := str + 'n';

end;

begin

{кодируем все атрибуты TFont в строку}

Result := '';

Result := Result + IntToStr(font.Color) + '|';

Result := Result + IntToStr(font.Height) + '|';

Result := Result + font.Name + '|';

Result := Result + IntToStr(Ord(font.Pitch)) + '|';

Result := Result + IntToStr(font.PixelsPerInch) + '|';

Result := Result + IntToStr(font.size) + '|';

if fsBold in font.style then

   yes(Result)

else

   no(Result);

if fsItalic in font.style then

   yes(Result)

else

   no(Result);

if fsUnderline in font.style then

   yes(Result)

else

   no(Result);

if fsStrikeout in font.style then

   yes(Result)

else

   no(Result);

end;

procedure StrToFont(str: string; font: TFont);

begin

if str = '' then

   Exit;

font.Color := StrToInt(tok('|', str));

font.Height := StrToInt(tok('|', str));

font.Name := tok('|', str);

font.Pitch := TFontPitch(StrToInt(tok('|', str)));

font.PixelsPerInch := StrToInt(tok('|', str));

font.Size := StrToInt(tok('|', str));

font.Style := [];

if str[0] = 'y' then

   font.Style := font.Style + [fsBold];

if str[1] = 'y' then

   font.Style := font.Style + [fsItalic];

if str[2] = 'y' then

   font.Style := font.Style + [fsUnderline];

if str[3] = 'y' then

   font.Style := font.Style + [fsStrikeout];

end;

function tok(sep: string; var s: string): string;

function isoneof(c, s: string): Boolean;

var

   iTmp: integer;

begin

   Result := False;

   for iTmp := 1 to Length(s) do

   begin

     if c = Copy(s, iTmp, 1) then

     begin

       Result := True;

       Exit;

     end;

   end;

end;

var

c, t: string;

begin

if s = '' then

begin

   Result := s;

   Exit;

end;

c := Copy(s, 1, 1);

while isoneof(c, sep) do

begin

   s := Copy(s, 2, Length(s) - 1);

   c := Copy(s, 1, 1);

end;

t := '';

while (not isoneof(c, sep)) and (s <> '') do

begin

   t := t + c;

   s := Copy(s, 2, length(s) - 1);

   c := Copy(s, 1, 1);

end;

Result := t;

end;

Code:

uses...Registry;

procedure SaveFontToRegistry(Font: TFont; SubKey: string);

var

R: TRegistry;

FontStyleInt: byte;

FS: TFontStyles;

begin

R := TRegistry.Create;

try

   FS := Font.Style;

   Move(FS, FontStyleInt, 1);

   R.OpenKey(SubKey, True);

   R.WriteString('Font Name', Font.Name);

   R.WriteInteger('Color', Font.Color);

   R.WriteInteger('CharSet', Font.Charset);

   R.WriteInteger('Size', Font.Size);

   R.WriteInteger('Style', FontStyleInt);

finally

   R.Free;

end;

end;

function ReadFontFromRegistry(Font: TFont; SubKey: string): boolean;

var

R: TRegistry;

FontStyleInt: byte;

FS: TFontStyles;

begin

R := TRegistry.Create;

try

   result := R.OpenKey(SubKey, false); if not result then exit;

   Font.Name := R.ReadString('Font Name');

   Font.Color := R.ReadInteger('Color');

   Font.Charset := R.ReadInteger('CharSet');

   Font.Size := R.ReadInteger('Size');

   FontStyleInt := R.ReadInteger('Style');

   Move(FontStyleInt, FS, 1);

   Font.Style := FS;

finally

   R.Free;

end;

end;

procedure TForm1.Button1Click(Sender: TObject);

begin

if FontDialog1.Execute then

   begin

     SaveFontToRegistry(FontDialog1.Font, 'Delphi Kingdom\Fonts');

   end;

end;

procedure TForm1.Button2Click(Sender: TObject);

var

NFont: TFont;

begin

NFont := TFont.Create;

if ReadFontFromRegistry(NFont, 'Delphi Kingdom\Fonts') then

   begin //здесь добавить проверку - существует ли шрифт

     Label1.Font.Assign(NFont);

     NFont.Free;

   end;

end;