vcl/source/app/IconThemeSelector.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
  10 #include <vcl/IconThemeSelector.hxx>
  11
  12 #include <vcl/IconThemeScanner.hxx>
  13 #include <vcl/IconThemeInfo.hxx>
  14
  15 #include <algorithm>
  16
  17 namespace vcl {
  18
  19 /*static*/ const OUStringLiteral IconThemeSelector::FALLBACK_ICON_THEME_ID("tango");
  20
  21 namespace {
  22
  23     class SameTheme :
  24         public std::unary_function<const vcl::IconThemeInfo &, bool>
  25     {
  26     private:
  27         const OUString& m_rThemeId;
  28     public:
  29         explicit SameTheme(const OUString &rThemeId) : m_rThemeId(rThemeId) {}
  30         bool operator()(const vcl::IconThemeInfo &rInfo)
  31         {
  32             return m_rThemeId == rInfo.GetThemeId();
  33         }
  34     };
  35
  36 bool icon_theme_is_in_installed_themes(const OUString& theme,
  37         const std::vector<IconThemeInfo>& installedThemes)
  38 {
  39     return std::any_of(installedThemes.begin(), installedThemes.end(),
  40                        SameTheme(theme));
  41 }
  42
  43 } // end anonymous namespace
  44
  45 IconThemeSelector::IconThemeSelector()
  46     : mUseHighContrastTheme(false)
  47     , mPreferDarkIconTheme(false)
  48 {
  49 }
  50
  51 /*static*/ OUString
  52 IconThemeSelector::GetIconThemeForDesktopEnvironment(const OUString& desktopEnvironment)
  53 {
  54     OUString r;
  55     if ( desktopEnvironment.equalsIgnoreAsciiCase("tde") ||
  56          desktopEnvironment.equalsIgnoreAsciiCase("kde") ) {
  57         r = "crystal";
  58     }
  59     else if ( desktopEnvironment.equalsIgnoreAsciiCase("kde4") ) {
  60         r = "oxygen";
  61     }
  62     else if ( desktopEnvironment.equalsIgnoreAsciiCase("kde5") ) {
  63         r = "breeze";
  64     }
  65     else if ( desktopEnvironment.equalsIgnoreAsciiCase("MacOSX") ) {
  66         r = "breeze";
  67     }
  68     else if ( desktopEnvironment.equalsIgnoreAsciiCase("unity") ) {
  69         r = "breeze";
  70     }
  71     else {
  72         r = FALLBACK_ICON_THEME_ID;
  73     }
  74     return r;
  75 }
  76
  77 OUString
  78 IconThemeSelector::SelectIconThemeForDesktopEnvironment(
  79         const std::vector<IconThemeInfo>& installedThemes,
  80         const OUString& desktopEnvironment) const
  81 {
  82     if (!mPreferredIconTheme.isEmpty()) {
  83         if (icon_theme_is_in_installed_themes(mPreferredIconTheme, installedThemes)) {
  84             return mPreferredIconTheme;
  85         }
  86         //if a dark variant is preferred, and we didn't have an exact match, then try our one and only dark theme
  87         if (mPreferDarkIconTheme && icon_theme_is_in_installed_themes("breeze_dark", installedThemes)) {
  88             return OUString("breeze_dark");
  89         }
  90     }
  91
  92     OUString themeForDesktop = GetIconThemeForDesktopEnvironment(desktopEnvironment);
  93     if (icon_theme_is_in_installed_themes(themeForDesktop, installedThemes)) {
  94         return themeForDesktop;
  95     }
  96
  97     return ReturnFallback(installedThemes);
  98 }
  99
 100 OUString
 101 IconThemeSelector::SelectIconTheme(
 102         const std::vector<IconThemeInfo>& installedThemes,
 103         const OUString& theme) const
 104 {
 105     if (mUseHighContrastTheme) {
 106         if (icon_theme_is_in_installed_themes(IconThemeInfo::HIGH_CONTRAST_ID, installedThemes)) {
 107             return IconThemeInfo::HIGH_CONTRAST_ID;
 108         }
 109     }
 110
 111     if (icon_theme_is_in_installed_themes(theme, installedThemes)) {
 112         return theme;
 113     }
 114
 115     return ReturnFallback(installedThemes);
 116 }
 117
 118 void
 119 IconThemeSelector::SetUseHighContrastTheme(bool v)
 120 {
 121     mUseHighContrastTheme = v;
 122 }
 123
 124 void
 125 IconThemeSelector::SetPreferredIconTheme(const OUString& theme, bool bDarkIconTheme)
 126 {
 127     mPreferredIconTheme = theme;
 128     mPreferDarkIconTheme = bDarkIconTheme;
 129 }
 130
 131 bool
 132 IconThemeSelector::operator==(const vcl::IconThemeSelector& other) const
 133 {
 134     if (this == &other) {
 135         return true;
 136     }
 137     if (mPreferredIconTheme != other.mPreferredIconTheme) {
 138         return false;
 139     }
 140     if (mPreferDarkIconTheme != other.mPreferDarkIconTheme) {
 141         return false;
 142     }
 143     if (mUseHighContrastTheme != other.mUseHighContrastTheme) {
 144         return false;
 145     }
 146     return true;
 147 }
 148
 149 bool
 150 IconThemeSelector::operator!=(const vcl::IconThemeSelector& other) const
 151 {
 152     return !((*this) == other);
 153 }
 154
 155 /*static*/ OUString
 156 IconThemeSelector::ReturnFallback(const std::vector<IconThemeInfo>& installedThemes)
 157 {
 158     if (!installedThemes.empty()) {
 159         return installedThemes.front().GetThemeId();
 160     }
 161     else {
 162         return FALLBACK_ICON_THEME_ID;
 163     }
 164 }
 165
 166 } /* namespace vcl */
 167
 168 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */