[Freeciv-Dev] (PR#13589) Theme support

["Mateusz Stefek" <mstefek@xxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=13589 >

This is unused theme engine - let's decide what to do with it.
Some coding style issues fixed, more comments.
I don't know how can I merge it with ftwl - I hope it is only a file
organization problem.
--
mateusz

diff -urN -Xfreeciv/diff_ignore freeciv/client/civclient.c 
themes/client/civclient.c
--- freeciv/client/civclient.c  2005-08-03 08:28:25.000000000 +0200
+++ themes/client/civclient.c   2005-08-06 09:57:23.000000000 +0200
@@ -68,6 +68,7 @@
 #include "plrdlg_g.h"
 #include "repodlgs_g.h"
 #include "tilespec.h"
+#include "themes_common.h"
 
 #include "civclient.h"
 
@@ -315,6 +316,7 @@
   chatline_common_init();
   message_options_init();
   init_player_dlg_common();
+  init_themes();
   settable_options_init();
 
   load_general_options();
diff -urN -Xfreeciv/diff_ignore freeciv/client/gui-gtk-2.0/Makefile.am 
themes/client/gui-gtk-2.0/Makefile.am
--- freeciv/client/gui-gtk-2.0/Makefile.am      2005-08-03 08:28:25.000000000 
+0200
+++ themes/client/gui-gtk-2.0/Makefile.am       2005-08-06 09:57:23.000000000 
+0200
@@ -85,6 +85,7 @@
        spaceshipdlg.h  \
        sprite.c        \
        sprite.h        \
+       themes.c        \
        wldlg.c         \
        wldlg.h 
 
diff -urN -Xfreeciv/diff_ignore freeciv/client/gui-gtk-2.0/themes.c 
themes/client/gui-gtk-2.0/themes.c
--- freeciv/client/gui-gtk-2.0/themes.c 1970-01-01 01:00:00.000000000 +0100
+++ themes/client/gui-gtk-2.0/themes.c  2005-08-06 10:14:59.000000000 +0200
@@ -0,0 +1,136 @@
+/********************************************************************** 
+ Freeciv - Copyright (C) 2005 The Freeciv Team
+   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, 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.
+***********************************************************************/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <gtk/gtk.h>
+
+#include "mem.h"
+#include "support.h"
+
+#include "themes_common.h"
+#include "themes_g.h"
+
+/*****************************************************************************
+  Loads a gtk theme directory/theme_name
+*****************************************************************************/
+void gui_load_theme(const char *directory, const char *theme_name)
+{
+  char buf[strlen(directory) + strlen(theme_name) + 32];
+  gchar *default_files[] = {buf, NULL};
+  
+  /* Gtk theme is a directory containing gtk-2.0/gtkrc file */
+  my_snprintf(buf, sizeof(buf), "%s/%s/gtk-2.0/gtkrc", directory,
+             theme_name);
+
+  gtk_rc_set_default_files(default_files);
+
+  gtk_rc_reparse_all_for_settings(gtk_settings_get_default(), TRUE);
+}
+
+/*****************************************************************************
+  Each gui has its own themes directories.
+  For gtk2 these are:
+  - /usr/share/themes
+  - ~/.themes
+  Returns an array containing these strings and sets array size in count.
+  The caller is responsible for freeing the array and the paths.
+*****************************************************************************/
+char **get_gui_specific_themes_directories(int *count)
+{
+  gchar *standard_dir;
+  char *home_dir;
+  char **directories = fc_malloc(sizeof(char *) * 2);
+
+  *count = 0;
+
+  standard_dir = gtk_rc_get_theme_dir();
+  directories[*count] = mystrdup(standard_dir);
+  (*count)++;
+  g_free(standard_dir);
+
+  home_dir = user_home_dir();
+  if (home_dir) {
+    char buf[strlen(home_dir) + 16];
+    
+    my_snprintf(buf, sizeof(buf), "%s/.themes/", home_dir);
+    directories[*count] = mystrdup(buf);
+    (*count)++;
+  }
+
+  return directories;
+}
+
+/*****************************************************************************
+  Return an array of names of usable themes in the given directory.
+  Array size is stored in count.
+  Useable theme for gtk+ is a directory which contains file gtk-2.0/gtkrc.
+  The caller is responsible for freeing the array and the names
+*****************************************************************************/
+char **get_useable_themes_in_directory(const char *directory, int *count)
+{
+  DIR *dir;
+  struct dirent *entry;
+  
+  char **theme_names = fc_malloc(sizeof(char *) * 2);
+  /* Allocated memory size */
+  int t_size = 2;
+
+
+  *count = 0;
+
+  dir = opendir(directory);
+  if (!dir) {
+    /* This isn't directory or we can't list it */
+    return theme_names;
+  }
+
+  while ((entry = readdir(dir))) {
+    char buf[strlen(directory) + strlen(entry->d_name) + 32];
+    struct stat stat_result;
+
+    my_snprintf(buf, sizeof(buf),
+               "%s/%s/gtk-2.0/gtkrc", directory, entry->d_name);
+
+    if (stat(buf, &stat_result) != 0) {
+      /* File doesn't exist */
+      continue;
+    }
+    
+    if (!S_ISREG(stat_result.st_mode)) {
+      /* Not a regular file */
+      continue;
+    }
+    
+    /* Otherwise it's ok */
+    
+    /* Increase array size if needed */
+    if (*count == t_size) {
+      theme_names = fc_realloc(theme_names, t_size * 2 * sizeof(char *));
+      t_size *= 2;
+    }
+
+    theme_names[*count] = mystrdup(entry->d_name);
+    (*count)++;
+  }
+
+  closedir(dir);
+
+  return theme_names;
+}
diff -urN -Xfreeciv/diff_ignore freeciv/client/include/Makefile.am 
themes/client/include/Makefile.am
--- freeciv/client/include/Makefile.am  2005-08-03 08:28:26.000000000 +0200
+++ themes/client/include/Makefile.am   2005-08-06 09:57:23.000000000 +0200
@@ -26,4 +26,5 @@
        repodlgs_g.h    \
        spaceshipdlg_g.h        \
        sprite_g.h              \
+       themes_g.h              \
        wldlg_g.h
diff -urN -Xfreeciv/diff_ignore freeciv/client/include/themes_g.h 
themes/client/include/themes_g.h
--- freeciv/client/include/themes_g.h   1970-01-01 01:00:00.000000000 +0100
+++ themes/client/include/themes_g.h    2005-08-06 09:57:23.000000000 +0200
@@ -0,0 +1,20 @@
+/********************************************************************** 
+ Freeciv - Copyright (C) 2005 The Freeciv Team
+   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, 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.
+***********************************************************************/
+#ifndef FC__THEMES_G_H
+#define FC__THEMES_G_H
+
+void gui_load_theme(const char* directory, const char* theme_name);
+char** get_gui_specific_themes_directories(int *count);
+char** get_useable_themes_in_directory(const char* directory, int* count);
+
+#endif
diff -urN -Xfreeciv/diff_ignore freeciv/client/Makefile.am 
themes/client/Makefile.am
--- freeciv/client/Makefile.am  2005-08-03 08:28:24.000000000 +0200
+++ themes/client/Makefile.am   2005-08-06 09:57:23.000000000 +0200
@@ -171,6 +171,8 @@
        reqtree.h \
        text.c  \
        text.h  \
+       themes_common.c \
+       themes_common.h \
        tilespec.c      \
        tilespec.h      \
        audio.c         \
diff -urN -Xfreeciv/diff_ignore freeciv/client/themes_common.c 
themes/client/themes_common.c
--- freeciv/client/themes_common.c      1970-01-01 01:00:00.000000000 +0100
+++ themes/client/themes_common.c       2005-08-06 09:57:23.000000000 +0200
@@ -0,0 +1,166 @@
+/********************************************************************** 
+ Freeciv - Copyright (C) 2005 The Freeciv Team
+   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, 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.
+***********************************************************************/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+
+#include <unistd.h>
+#include <string.h>
+#include <sys/stat.h>
+
+
+#include "mem.h"
+#include "shared.h"
+#include "support.h"
+
+#include "themes_common.h"
+
+#include "themes_g.h"
+
+/* A directory containing a list of usable themes */
+struct theme_directory {
+  /* Path on the filesystem */
+  char *path; 
+  /* Array of theme names */
+  char **themes;
+  /* Themes array length */
+  int num_themes;
+};
+
+/* List of all directories with themes */
+static int num_directories;
+struct theme_directory *directories;
+
+/****************************************************************************
+  Initialized themes data
+****************************************************************************/
+void init_themes(void)
+{
+  int t_size = 2;
+  char **directories_paths = fc_malloc(sizeof(char *) * 2);
+  int count = 0;
+  int i;
+  char *path;
+  char *tok;
+  struct stat stat_result;
+  int gui_directories_count;
+  char **gui_directories;
+
+  /* We copy DEFAULT_DATA_PATH, we will write on it later */
+  path = mystrdup(DEFAULT_DATA_PATH);
+  
+  /* Directories are separated with : or ; */
+  for (tok = strtok(path, ":;"); tok; tok = strtok(NULL, ":;")) {
+    char buf[strlen(DEFAULT_DATA_PATH) + 16];
+
+    /* Check if there's 'themes' subdirectory */
+    my_snprintf(buf, sizeof(buf), "%s/themes", tok);
+    if (stat(buf, &stat_result) != 0) {
+      continue;
+    }
+    if (!S_ISDIR(stat_result.st_mode)) {
+      continue;
+    }
+
+    /* Increase array size if needed */
+    if (t_size == count) {
+      directories_paths =
+         fc_realloc(directories_paths, t_size * 2 * sizeof(char *));
+      t_size *= 2;
+    }
+
+    directories_paths[count] = mystrdup(buf);
+    count++;
+  }
+  free(path);
+
+  /* Add gui specific directories */
+  gui_directories =
+      get_gui_specific_themes_directories(&gui_directories_count);
+
+  for (i = 0; i < gui_directories_count; i++) {
+    if (t_size == count) {
+      directories_paths =
+         fc_realloc(directories_paths, t_size * 2 * sizeof(char *));
+      t_size *= 2;
+    }
+    /* We are responsible for freeing the memory, so we don't need to copy */
+    directories_paths[count++] = gui_directories[i];
+  }
+  free(gui_directories);
+
+  /* Load useable themes in those directories */
+  directories = fc_malloc(sizeof(struct theme_directory) * count);
+  for (i = 0; i < count; i++) {
+    directories[i].path = directories_paths[i];
+
+    /* Gui specific function must search for themes */
+    directories[i].themes =
+       get_useable_themes_in_directory(directories_paths[i],
+                                       &(directories[i].num_themes));
+  }
+  num_directories = count;
+  free(directories_paths);
+}
+
+/****************************************************************************
+  Return an array of useable theme names. The array is NULL terminated and 
+  the caller is responsible for freeing the array.
+****************************************************************************/
+const char **get_themes_list(void)
+{
+  int size = 0;
+  int i, j, k, c;
+  const char **themes;
+
+  for (i = 0; i < num_directories; i++) {
+    size += directories[i].num_themes;
+  }
+
+  themes = fc_malloc(sizeof(char *) * (size + 1));
+
+  /* Copy theme names from all directories, but remove duplicates */
+  c = 0;
+  for (i = 0; i < num_directories; i++) {
+    for (j = 0; j < directories[i].num_themes; j++) {
+      for (k = 0; k < c; k++) {
+       if (strcmp(themes[k], directories[i].themes[j]) == 0) {
+         break;
+       }
+      }
+      if (k == c) {
+       themes[c++] = directories[i].themes[j];
+      }
+    }
+  }
+  themes[c] = NULL;
+  return themes;
+}
+
+/****************************************************************************
+  Loads a theme with the given name. First matching directory will be used.
+****************************************************************************/
+void load_theme(const char *theme_name)
+{
+  int i, j;
+  for (i = 0; i < num_directories; i++) {
+    for (j = 0; j < directories[i].num_themes; j++) {
+      if (strcmp(theme_name, directories[i].themes[j]) == 0) {
+       gui_load_theme(directories[i].path, directories[i].themes[j]);
+       return;
+      }
+    }
+  }
+}
diff -urN -Xfreeciv/diff_ignore freeciv/client/themes_common.h 
themes/client/themes_common.h
--- freeciv/client/themes_common.h      1970-01-01 01:00:00.000000000 +0100
+++ themes/client/themes_common.h       2005-08-06 09:57:23.000000000 +0200
@@ -0,0 +1,20 @@
+/********************************************************************** 
+ Freeciv - Copyright (C) 2005 The Freeciv Team
+   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, 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.
+***********************************************************************/
+#ifndef FC__THEMES_COMMON_H
+#define FC__THEMES_COMMON_H
+#include "options.h"
+
+void init_themes(void);
+const char** get_themes_list(void);
+void load_theme(const char* theme_name);
+#endif