vcl/source/app/IconThemeInfo.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/IconThemeInfo.hxx>
  11 #include <rtl/character.hxx>
  12
  13 #include <stdexcept>
  14 #include <algorithm>
  15
  16 // constants for theme ids and display names. Only the theme id for hicontrast is used
  17 // outside of this class and hence made public.
  18
  19 const OUStringLiteral vcl::IconThemeInfo::HIGH_CONTRAST_ID("hicontrast");
  20
  21 namespace {
  22
  23 static const OUStringLiteral HIGH_CONTRAST_DISPLAY_NAME("High Contrast");
  24 static const OUStringLiteral TANGO_TESTING_ID("tango_testing");
  25 static const OUStringLiteral TANGO_TESTING_DISPLAY_NAME("Tango Testing");
  26 static const OUStringLiteral BREEZE_DARK_ID("breeze_dark");
  27 static const OUStringLiteral BREEZE_DARK_DISPLAY_NAME("Breeze Dark");
  28
  29 OUString
  30 filename_from_url(const OUString& url)
  31 {
  32     sal_Int32 slashPosition = url.lastIndexOf( '/' );
  33     if (slashPosition < 0) {
  34         return OUString("");
  35     }
  36     OUString filename = url.copy( slashPosition+1 );
  37     return filename;
  38 }
  39
  40 } // end anonymous namespace
  41
  42 namespace vcl {
  43
  44 static const char ICON_THEME_PACKAGE_PREFIX[] = "images_";
  45
  46 static const char EXTENSION_FOR_ICON_PACKAGES[] = ".zip";
  47
  48 IconThemeInfo::IconThemeInfo()
  49 {
  50 }
  51
  52 IconThemeInfo::IconThemeInfo(const OUString& urlToFile)
  53 : mUrlToFile(urlToFile)
  54 {
  55     OUString filename = filename_from_url(urlToFile);
  56     if (filename.isEmpty()) {
  57         throw std::runtime_error("invalid URL passed to IconThemeInfo()");
  58     }
  59
  60     mThemeId = FileNameToThemeId(filename);
  61     mDisplayName = ThemeIdToDisplayName(mThemeId);
  62
  63 }
  64
  65 /*static*/ Size
  66 IconThemeInfo::SizeByThemeName(const OUString& themeName)
  67 {
  68     if (themeName == "tango") {
  69         return Size( 24, 24 );
  70     }
  71     else if (themeName == "crystal") {
  72         return Size( 22, 22 );
  73     }
  74     else if (themeName == "galaxy") {
  75         return Size( 22, 22 );
  76     }
  77     else {
  78         return Size( 26, 26 );
  79     }
  80 }
  81
  82 /*static*/ bool
  83 IconThemeInfo::UrlCanBeParsed(const OUString& url)
  84 {
  85     OUString fname = filename_from_url(url);
  86     if (fname.isEmpty()) {
  87         return false;
  88     }
  89
  90     if (!fname.startsWithIgnoreAsciiCase(ICON_THEME_PACKAGE_PREFIX)) {
  91         return false;
  92     }
  93
  94     if (!fname.endsWithIgnoreAsciiCase(EXTENSION_FOR_ICON_PACKAGES)) {
  95         return false;
  96     }
  97
  98     return true;
  99 }
 100
 101 /*static*/ OUString
 102 IconThemeInfo::FileNameToThemeId(const OUString& filename)
 103 {
 104     OUString r;
 105     sal_Int32 positionOfLastDot = filename.lastIndexOf(EXTENSION_FOR_ICON_PACKAGES);
 106     if (positionOfLastDot < 0) { // -1 means index not found
 107         throw std::runtime_error("IconThemeInfo::FileNameToThemeId() called with invalid filename.");
 108     }
 109     sal_Int32 positionOfFirstUnderscore = filename.indexOf(ICON_THEME_PACKAGE_PREFIX);
 110     if (positionOfFirstUnderscore < 0) { // -1 means index not found. Use the whole name instead
 111         throw std::runtime_error("IconThemeInfo::FileNameToThemeId() called with invalid filename.");
 112     }
 113     positionOfFirstUnderscore += RTL_CONSTASCII_LENGTH(ICON_THEME_PACKAGE_PREFIX);
 114     r = filename.copy(positionOfFirstUnderscore, positionOfLastDot - positionOfFirstUnderscore);
 115     return r;
 116 }
 117
 118 /*static*/ OUString
 119 IconThemeInfo::ThemeIdToDisplayName(const OUString& themeId)
 120 {
 121     if (themeId.isEmpty()) {
 122         throw std::runtime_error("IconThemeInfo::ThemeIdToDisplayName() called with invalid id.");
 123     }
 124
 125     // special cases
 126     if (themeId.equalsIgnoreAsciiCase(HIGH_CONTRAST_ID)) {
 127         return HIGH_CONTRAST_DISPLAY_NAME;
 128     }
 129     else if (themeId.equalsIgnoreAsciiCase(TANGO_TESTING_ID)) {
 130         return TANGO_TESTING_DISPLAY_NAME;
 131     }
 132     else if (themeId.equalsIgnoreAsciiCase(BREEZE_DARK_ID)) {
 133         return BREEZE_DARK_DISPLAY_NAME;
 134     }
 135
 136     // make the first letter uppercase
 137     OUString r;
 138     sal_Unicode firstLetter = themeId[0];
 139     if (rtl::isAsciiLowerCase(firstLetter)) {
 140         r = OUString(sal_Unicode(rtl::toAsciiUpperCase(firstLetter)));
 141         r += themeId.copy(1);
 142     }
 143     else {
 144         r = themeId;
 145     }
 146
 147     return r;
 148 }
 149
 150 namespace
 151 {
 152     class SameTheme :
 153         public std::unary_function<const vcl::IconThemeInfo &, bool>
 154     {
 155     private:
 156         const OUString& m_rThemeId;
 157     public:
 158         explicit SameTheme(const OUString &rThemeId) : m_rThemeId(rThemeId) {}
 159         bool operator()(const vcl::IconThemeInfo &rInfo)
 160         {
 161             return m_rThemeId == rInfo.GetThemeId();
 162         }
 163     };
 164 }
 165
 166 /*static*/ const vcl::IconThemeInfo&
 167 IconThemeInfo::FindIconThemeById(const std::vector<vcl::IconThemeInfo>& themes, const OUString& themeId)
 168 {
 169     std::vector<vcl::IconThemeInfo>::const_iterator it = std::find_if(themes.begin(), themes.end(),
 170                SameTheme(themeId));
 171     if (it == themes.end())
 172     {
 173         throw std::runtime_error("Could not find theme id in theme vector.");
 174     }
 175     return *it;
 176 }
 177
 178 /*static*/ bool
 179 IconThemeInfo::IconThemeIsInVector(const std::vector<vcl::IconThemeInfo>& themes, const OUString& themeId)
 180 {
 181     return std::any_of(themes.begin(), themes.end(), SameTheme(themeId));
 182 }
 183
 184 } // end namespace vcl
 185
 186 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */