aboutsummaryrefslogtreecommitdiffstats
path: root/mediaplugin/src/base/UPlatformWindows.pas
blob: 91d3cce67f3839206bbb0b9ee94b7884fe5d1b14 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
{* UltraStar Deluxe - Karaoke Game
 *
 * UltraStar Deluxe is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING. If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * $URL$
 * $Id$
 *}

unit UPlatformWindows;

interface

{$IFDEF FPC}
  {$MODE Delphi}
{$ENDIF}

{$I switches.inc}

// turn off messages for platform specific symbols
{$WARN SYMBOL_PLATFORM OFF}

uses
  Classes,
  UPlatform,
  UPath;

type
  TPlatformWindows = class(TPlatform)
    private
      UseLocalDirs: boolean;
      
      function GetSpecialPath(CSIDL: integer): IPath;
      procedure DetectLocalExecution();
    public
      procedure Init; override;
      function TerminateIfAlreadyRunning(var WndTitle: String): Boolean; override;

      function GetLogPath: IPath; override;
      function GetGameSharedPath: IPath; override;
      function GetGameUserPath: IPath; override;
  end;

implementation

uses
  SysUtils,
  ShlObj,
  Windows,
  UConfig;

procedure TPlatformWindows.Init;
begin
  inherited Init();
  DetectLocalExecution();
end;

//------------------------------
//Start more than One Time Prevention
//------------------------------
function TPlatformWindows.TerminateIfAlreadyRunning(var WndTitle: String): Boolean;
var
  hWnd: THandle;
  I: Integer;
begin
    Result := false;
    hWnd:= FindWindow(nil, PChar(WndTitle));
    //Programm already started
    if (hWnd <> 0) then
    begin
      I := Messagebox(0, PChar('Another Instance of Ultrastar is already running. Continue ?'), PChar(WndTitle), MB_ICONWARNING or MB_YESNO);
      if (I = IDYes) then
      begin
        I := 1;
        repeat
          Inc(I);
          hWnd := FindWindow(nil, PChar(WndTitle + ' Instance ' + InttoStr(I)));
        until (hWnd = 0);
        WndTitle := WndTitle + ' Instance ' + InttoStr(I);
      end
      else
        Result := true;
    end;
end;

(**
 * Returns the path of a special folder.
 *
 * Some Folder IDs:
 * CSIDL_APPDATA       (e.g. C:\Documents and Settings\username\Application Data)
 * CSIDL_LOCAL_APPDATA (e.g. C:\Documents and Settings\username\Local Settings\Application Data)
 * CSIDL_PROFILE       (e.g. C:\Documents and Settings\username)
 * CSIDL_PERSONAL      (e.g. C:\Documents and Settings\username\My Documents)
 * CSIDL_MYMUSIC       (e.g. C:\Documents and Settings\username\My Documents\My Music)
 *)
function TPlatformWindows.GetSpecialPath(CSIDL: integer): IPath;
var
  Buffer: array [0..MAX_PATH-1] of WideChar;
begin
  if (SHGetSpecialFolderPathW(0, @Buffer, CSIDL, false)) then
    Result := Path(Buffer)
  else
    Result := PATH_NONE;
end;

{**
 * Detects whether the was executed locally or globally.
 * - Local mode:
 *   - Condition:
 *     - config.ini is writable or creatable in the directory of the executable.
 *   - Examples:
 *     - The USDX zip-archive has been unpacked to a directory with write.
 *       permissions
 *     - XP: USDX was installed to %ProgramFiles% and the user is an admin.
 *     - USDX is started from an external HD- or flash-drive
 *   - Behavior:
 *     Config files like config.ini or score db reside in the directory of the
 *     executable. This is useful to enable windows users to have a portable
 *     installation e.g. on an external hdd.
 *     This is also the default behaviour of usdx prior to version 1.1
 * - Global mode:
 *   - Condition:
 *     - config.ini is not writable.
 *   - Examples:
 *     - Vista/7: USDX was installed to %ProgramFiles%.
 *     - XP: USDX was installed to %ProgramFiles% and the user is not an admin.
 *     - USDX is started from CD
 *   - Behavior:
 *     - The config files are in a separate folder (e.g. %APPDATA%\ultrastardx)
 *
 * On windows, resources (themes, language-files)
 * reside in the directory of the executable in any case
 *
 * Sets UseLocalDirs to true if the game is executed locally, false otherwise.
 *}
procedure TPlatformWindows.DetectLocalExecution();
var
  LocalDir, ConfigIni: IPath;
  Handle: TFileHandle;
begin
  LocalDir := GetExecutionDir();
  ConfigIni := LocalDir.Append('config.ini');

  // check if config.ini is writable or creatable, if so use local dirs
  UseLocalDirs := false;
  if (ConfigIni.Exists()) then
  begin
    // do not use a read-only config file
    if (not ConfigIni.IsReadOnly()) then
    begin
      // Just open the file in read-write mode to be sure that we have access
      // rights for it.
      // Note: Do not use IsReadOnly() as it does not check file privileges, so
      // a non-read-only file might not be writable for us.
      Handle := ConfigIni.Open(fmOpenReadWrite);
      if (Handle <> -1) then
      begin
        FileClose(Handle);
        UseLocalDirs := true;
      end;
    end;
  end
  else // config.ini does not exist
  begin
    // try to create config.ini
    Handle := ConfigIni.CreateFile();
    if (Handle <> -1) then
    begin
      FileClose(Handle);
      UseLocalDirs := true;
    end;
  end;
end;

function TPlatformWindows.GetLogPath: IPath;
begin
  Result := GetGameUserPath;
end;

function TPlatformWindows.GetGameSharedPath: IPath;
begin
  Result := GetExecutionDir();
end;

function TPlatformWindows.GetGameUserPath: IPath;
begin
  if UseLocalDirs then
    Result := GetExecutionDir()
  else
    Result := GetSpecialPath(CSIDL_APPDATA).Append('ultrastardx', pdAppend);
end;

end.