client/gui-qt/themes.cpp

   1 /**********************************************************************
   2  Freeciv - Copyright (C) 2005 The Freeciv Team
   3    This program is free software; you can redistribute it and/or modify
   4    it under the terms of the GNU General Public License as published by
   5    the Free Software Foundation; either version 2, or (at your option)
   6    any later version.
   7
   8    This program is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11    GNU General Public License for more details.
  12 ***********************************************************************/
  13 #ifdef HAVE_CONFIG_H
  14 #include <fc_config.h>
  15 #endif
  16
  17 // Qt
  18 #include <QApplication>
  19 #include <QDir>
  20 #include <QPalette>
  21 #include <QStyleFactory>
  22 #include <QTextStream>
  23
  24 /* utility */
  25 #include "mem.h"
  26
  27 /* client */
  28 #include "themes_common.h"
  29
  30 /* client/include */
  31 #include "themes_g.h"
  32
  33 // gui-qt
  34 #include "fc_client.h"
  35
  36 extern QApplication *current_app();
  37 extern QApplication *qapp;
  38 extern QString current_theme;
  39 static QString def_app_style;
  40 static QString real_data_dir;
  41 static QString stylestring;
  42
  43 /*****************************************************************************
  44   Loads a qt theme directory/theme_name
  45 *****************************************************************************/
  46 void qtg_gui_load_theme(const char *directory, const char *theme_name)
  47 {
  48   QString name;
  49   QString path;
  50   QString fake_dir;
  51   QDir dir;
  52   QFile f;
  53   QString lnb = "LittleFinger";
  54   QPalette pal;
  55
  56   if (def_app_style.isEmpty()) {
  57     def_app_style = QApplication::style()->objectName();
  58   }
  59
  60   if (real_data_dir.isEmpty()) {
  61     real_data_dir = QString(directory);
  62   }
  63
  64   path = real_data_dir + DIR_SEPARATOR + theme_name + DIR_SEPARATOR;
  65   name = dir.absolutePath() + QDir::separator() + real_data_dir;
  66   name = path + "resource.qss";
  67   f.setFileName(name);
  68
  69   if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
  70     if (QString(theme_name) != QString(FC_QT_DEFAULT_THEME_NAME)) {
  71       qtg_gui_clear_theme();
  72     }
  73     return;
  74   }
  75   /* Stylesheet uses UNIX separators */
  76   fake_dir = real_data_dir;
  77   fake_dir.replace(QString(DIR_SEPARATOR), "/");
  78   QTextStream in(&f);
  79   stylestring = in.readAll();
  80   stylestring.replace(lnb, fake_dir + "/" + theme_name + "/");
  81
  82   if (QString(theme_name) == QString("System")) {
  83     QApplication::setStyle(QStyleFactory::create(def_app_style));
  84   } else {
  85     QApplication::setStyle(QStyleFactory::create("Fusion"));
  86   }
  87
  88   current_theme = theme_name;
  89   current_app()->setStyleSheet(stylestring);
  90   if (gui()) {
  91     gui()->reload_sidebar_icons();
  92   }
  93   pal.setBrush(QPalette::Link, QColor(92,170,229));
  94   pal.setBrush(QPalette::LinkVisited, QColor(54,150,229));
  95   QApplication::setPalette(pal);
  96 }
  97
  98 /*****************************************************************************
  99   Clears a theme (sets default system theme)
 100 *****************************************************************************/
 101 void qtg_gui_clear_theme()
 102 {
 103   QString name, str;
 104
 105   str = QString("themes") + DIR_SEPARATOR + "gui-qt" + DIR_SEPARATOR;
 106   name = fileinfoname(get_data_dirs(), str.toLocal8Bit().data());
 107   qtg_gui_load_theme(name.toLocal8Bit().data(), FC_QT_DEFAULT_THEME_NAME);
 108 }
 109
 110 /*****************************************************************************
 111   Each gui has its own themes directories.
 112
 113   Returns an array containing these strings and sets array size in count.
 114   The caller is responsible for freeing the array and the paths.
 115 *****************************************************************************/
 116 char **qtg_get_gui_specific_themes_directories(int *count)
 117 {
 118   char **array;
 119   char *persistent = static_cast<char*>(fc_malloc(256));
 120
 121   *count = 1;
 122   /* array is deleted in C client code and shouln't
 123      be allocated with new[] */
 124   array = static_cast<char **>(fc_malloc((*count) * sizeof(char *)));
 125   strncpy(persistent, fileinfoname(get_data_dirs(),""), 256);
 126   array[0] = persistent;
 127   return array;
 128 }
 129
 130 /*****************************************************************************
 131   Return an array of names of usable themes in the given directory.
 132   Array size is stored in count.
 133   The caller is responsible for freeing the array and the names
 134 *****************************************************************************/
 135 char **qtg_get_useable_themes_in_directory(const char *directory, int *count)
 136 {
 137   QStringList sl, theme_list;
 138   char **array;
 139   char *data;
 140   QByteArray qba;;
 141   QString str;
 142   QString name;
 143   QString qtheme_name;
 144   QDir dir;
 145   QFile f;
 146
 147   str = QString("themes") + DIR_SEPARATOR + "gui-qt" + DIR_SEPARATOR;
 148   name = fileinfoname(get_data_dirs(), str.toLocal8Bit().data());
 149
 150   dir.setPath(name);
 151   sl << dir.entryList(QDir::AllDirs | QDir::NoDotAndDotDot);
 152   name = name;
 153
 154   foreach(str, sl) {
 155     f.setFileName(name + str + DIR_SEPARATOR + "resource.qss");
 156     if (f.exists() == false) {
 157       continue;
 158     }
 159     theme_list << str;
 160   }
 161
 162   qtheme_name = gui_options.gui_qt_default_theme_name;
 163   /* move current theme on first position */
 164   if (theme_list.contains(qtheme_name)) {
 165     theme_list.removeAll(qtheme_name);
 166     theme_list.prepend(qtheme_name);
 167   }
 168   array = new char *[theme_list.count()];
 169   *count = theme_list.count();
 170
 171   for (int i = 0; i < *count; i++) {
 172     qba = theme_list[i].toLocal8Bit();
 173     data = new char[theme_list[i].toLocal8Bit().count() + 1];
 174     strcpy(data, theme_list[i].toLocal8Bit().data());
 175     array[i] = data;
 176   }
 177
 178   return array;
 179 }