vcl/source/app/brand.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <string_view>
  23
  24 #include <config_folders.h>
  25
  26 #include <rtl/ustring.hxx>
  27 #include <rtl/bootstrap.hxx>
  28 #include <osl/process.h>
  29 #include <tools/urlobj.hxx>
  30 #include <tools/stream.hxx>
  31 #include <i18nlangtag/languagetag.hxx>
  32 #include <vcl/filter/PngImageReader.hxx>
  33 #include <vcl/bitmapex.hxx>
  34 #include <vcl/svapp.hxx>
  35
  36 namespace {
  37     bool loadPng( std::u16string_view rPath, BitmapEx &rBitmap)
  38     {
  39         INetURLObject aObj( rPath );
  40         SvFileStream aStrm( aObj.PathToFileName(), StreamMode::STD_READ );
  41         if ( !aStrm.GetError() ) {
  42             vcl::PngImageReader aReader( aStrm );
  43             rBitmap = aReader.read();
  44             return !rBitmap.IsEmpty();
  45         }
  46         else
  47             return false;
  48     }
  49     bool tryLoadPng( std::u16string_view rBaseDir, std::u16string_view rName, BitmapEx& rBitmap )
  50     {
  51         return loadPng( rtl::Concat2View(OUString::Concat(rBaseDir) + "/" LIBO_ETC_FOLDER + rName), rBitmap);
  52     }
  53 }
  54
  55 bool Application::LoadBrandBitmap (std::u16string_view pName, BitmapEx &rBitmap)
  56 {
  57     // TODO - if we want more flexibility we could add a branding path
  58     // in an rc file perhaps fallback to "about.bmp"
  59     OUString aBaseDir( u"$BRAND_BASE_DIR"_ustr);
  60     rtl::Bootstrap::expandMacros( aBaseDir );
  61     OUString aBaseName(OUStringChar('/') + pName);
  62     OUString aPng( u".png"_ustr );
  63
  64     rtl_Locale *pLoc = nullptr;
  65     osl_getProcessLocale (&pLoc);
  66     LanguageTag aLanguageTag( *pLoc);
  67
  68     ::std::vector< OUString > aFallbacks( aLanguageTag.getFallbackStrings( true));
  69     for (const OUString & aFallback : aFallbacks)
  70     {
  71         if (tryLoadPng( aBaseDir, Concat2View(aBaseName + "-" + aFallback + aPng), rBitmap))
  72             return true;
  73     }
  74
  75     return tryLoadPng( aBaseDir, Concat2View(aBaseName + aPng), rBitmap);
  76 }
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */