PascalType2/Source/PascalType.Platform.Windows.pas at master · andersmelander/PascalType2 · GitHub

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unit PascalType.Platform.Windows;

////////////////////////////////////////////////////////////////////////////////
//                                                                            //
//  Version: MPL 1.1 or LGPL 2.1 with linking exception                       //
//                                                                            //
//  The contents of this file are subject to the Mozilla Public License       //
//  Version 1.1 (the "License"); you may not use this file except in          //
//  compliance with the License. You may obtain a copy of the License at      //
//  http://www.mozilla.org/MPL/                                               //
//                                                                            //
//  Software distributed under the License is distributed on an "AS IS"       //
//  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the   //
//  License for the specific language governing rights and limitations under  //
//  the License.                                                              //
//                                                                            //
//  Alternatively, the contents of this file may be used under the terms of   //
//  the Free Pascal modified version of the GNU Lesser General Public         //
//  License Version 2.1 (the "FPC modified LGPL License"), in which case the  //
//  provisions of this license are applicable instead of those above.         //
//  Please see the file LICENSE.txt for additional information concerning     //
//  this license.                                                             //
//                                                                            //
//  The code is part of the PascalType Project                                //
//                                                                            //
//  The initial developer of this code is Christian-W. Budde                  //
//                                                                            //
//  Portions created by Christian-W. Budde are Copyright (C) 2010-2017        //
//  by Christian-W. Budde. All Rights Reserved.                               //
//                                                                            //
////////////////////////////////////////////////////////////////////////////////

interface

{$I PT_Compiler.inc}

uses
  Windows, SysUtils;

function GetFontDirectory: string;
function GetUserFontDirectory: string;

implementation

uses
  IOUtils,
  ShlObj,
  ActiveX;

procedure StrResetLength(var S: string);
begin
  SetLength(S, StrLen(PChar(S)));
end;

function PidlToPath(IdList: PItemIdList): string;
begin
  SetLength(Result, MAX_PATH);
  if SHGetPathFromIDList(IdList, PChar(Result)) then
    StrResetLength(Result)
  else
    Result := '';
end;

function PidlFree(var IdList: PItemIdList): Boolean;
var
  Malloc: IMalloc;
begin
  Result := False;
  if IdList = nil then
    Result := True
  else
  begin
    if Succeeded(SHGetMalloc(Malloc)) and (Malloc.DidAlloc(IdList) > 0) then
    begin
      Malloc.Free(IdList);
      IdList := nil;
      Result := True;
    end;
  end;
end;

function GetFontDirectory: string;
var
  lFolderPidl: PItemIdList;
begin
  if Succeeded(SHGetSpecialFolderLocation(0, CSIDL_FONTS, lFolderPidl)) then
  begin
    Result := PidlToPath(lFolderPidl);
    PidlFree(lFolderPidl);
  end
  else
    Result := '';
end;

function GetUserFontDirectory: string;
var
  lFolderPidl: PItemIdList;
begin
  if Succeeded(SHGetSpecialFolderLocation(0, CSIDL_PROFILE, lFolderPidl)) then
  begin
    // There's really no documented, safe way to get this path so we'll just have to hardcode it.
    Result := TPath.Combine(PidlToPath(lFolderPidl), 'AppData\Local\Microsoft\Windows\Fonts');
    PidlFree(lFolderPidl);
  end
  else
    Result := '';
end;

end.