src/framework/thememanager.cpp

   1 /*
   2  * Copyright (c) 2007-2013, Czirkos Zoltan http://code.google.com/p/gdash/
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "config.h"
  18
  19 #include "misc/logger.hpp"
  20 #include "gfx/pixbuffactory.hpp"
  21 #include "gfx/cellrenderer.hpp"
  22 #include "settings.hpp"
  23
  24 static void add_file_to_themes(PixbufFactory &pf, std::vector<std::string> &themes, const char *filename) {
  25     g_assert(filename!=NULL);
  26
  27     /* if file name already in themes list, remove. */
  28     for (unsigned i=0; i<themes.size(); i++)
  29         if (themes[i]!="" && themes[i]==filename) {
  30             themes.erase(themes.begin()+i);
  31             i--;
  32         }
  33
  34     if (CellRenderer::is_image_ok_for_theme(pf, filename))
  35         themes.push_back(filename);
  36 }
  37
  38 static void add_dir_to_themes(PixbufFactory &pf, std::vector<std::string> &themes, const char *directory_name) {
  39     Logger l(true);       /* do not report error messages */
  40
  41     GDir *dir=g_dir_open(directory_name, 0, NULL);
  42     if (!dir)
  43         /* silently ignore unable-to-open directories */
  44         return;
  45     char const *name;
  46     while ((name=g_dir_read_name(dir)) != NULL) {
  47         char *filename=g_build_filename(directory_name, name, NULL);
  48         char *lower=g_ascii_strdown(filename, -1);
  49
  50         /* we only allow bmp and png files. converted to lowercase, to be able to check for .bmp */
  51         if ((g_str_has_suffix(lower, ".bmp") || g_str_has_suffix(lower, ".png")) && g_file_test(filename, G_FILE_TEST_IS_REGULAR))
  52             /* try to add the file. */
  53             add_file_to_themes(pf, themes, filename);
  54
  55         g_free(lower);
  56         g_free(filename);
  57     }
  58     g_dir_close(dir);
  59 }
  60
  61 /* will create a list of file names which can be used as themes. */
  62 /* the first item will be an empty string to represent the default, built-in theme. */
  63 static std::vector<std::string> settings_create_themes_list(PixbufFactory &pf) {
  64     std::vector<std::string> themes;
  65
  66     themes.push_back("");    /* this symbolizes the default theme */
  67     if (gd_theme!="")
  68         add_file_to_themes(pf, themes, gd_theme.c_str());
  69
  70     for (unsigned i=0; i<gd_themes_dirs.size(); ++i)
  71         add_dir_to_themes(pf, themes, gd_themes_dirs[i].c_str());
  72
  73     return themes;
  74 }
  75
  76
  77 void load_themes_list(PixbufFactory &pf, std::vector<std::string> &themes, int &themenum) {
  78     themes = settings_create_themes_list(pf);
  79     themenum = -1;
  80     if (gd_theme != "") {
  81         for (unsigned n = 1; n < themes.size(); n++)
  82             if (themes[n] == gd_theme)
  83                 themenum = n;
  84     }
  85     else
  86         themenum = 0;
  87     if (themenum == -1) {
  88         gd_warning(CPrintf("theme %s not found in array") % gd_theme);
  89         themenum = 0;
  90     }
  91 }
  92
  93
  94 std::string filename_for_new_theme(const char *theme_to_install) {
  95     // create a new filename, with all lowercase letters
  96     char *basename=g_path_get_basename(theme_to_install);
  97     char *utf8=g_filename_to_utf8(basename, -1, NULL, NULL, NULL);
  98     char *lowercase=g_utf8_strdown(utf8, -1);
  99     char *lowercase_sys=g_filename_from_utf8(lowercase, -1, NULL, NULL, NULL);
 100
 101     // first dir in themes_dirs is the themes dir of the user
 102     char *new_filename = g_build_path(G_DIR_SEPARATOR_S, gd_themes_dirs[0].c_str(), lowercase_sys, NULL);
 103     g_free(lowercase_sys);
 104     g_free(lowercase);
 105     g_free(utf8);
 106     g_free(basename);
 107
 108     std::string ret = new_filename;
 109     g_free(new_filename);
 110     return ret;
 111 }
 112
 113
 114 bool install_theme(const char *from, const char *to) {
 115     // first dir in themes_dirs is the themes dir of the user
 116     g_mkdir_with_parents(gd_themes_dirs[0].c_str(), 0700);
 117     GError *error=NULL;
 118     gchar *contents = NULL;
 119     gsize length;
 120     gboolean result = g_file_get_contents(from, &contents, &length, &error) && g_file_set_contents(to, contents, length, &error);
 121     if (error) {
 122         gd_critical(error->message);
 123         g_error_free(error);
 124     }
 125     g_free(contents);
 126     return result;
 127 }