src/loader/theme.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #ifndef LOADER__THEME_H
  12 #define LOADER__THEME_H
  13
  14 #include <map>
  15 #include <QPixmap>
  16 #include <QObject>
  17 #include "loader/context.h"
  18 #include "luaapi/loader.h"
  19 #include "themeinfo.h"
  20
  21 namespace Loader {
  22
  23 typedef std::map<QRect, QPixmap, ::LuaApi::RectLess> PixmapMap;
  24 typedef boost::variant<QPixmap, PixmapMap> PixmapOrMap;
  25
  26 /**
  27   * @class Theme <loader/theme.h>
  28   * @brief A class that represents and caches all images loaded by a theme.
  29   *
  30   * This class will be created once for each lua-scripted theme, and will cache
  31   * images loaded from that theme.
  32   */
  33 class Theme : public QObject {
  34 Q_OBJECT
  35
  36 private:
  37   ThemeInfo m_theme;
  38
  39   /** there will be one such class for each size, and i will store pixmaps and glyphs */
  40   class SizeCache {
  41   public:
  42     typedef std::map<QString, PixmapOrMap> PixmapsCache;
  43     typedef std::map<QString, Glyph> GlyphsCache;
  44     int m_ref_count;
  45     PixmapsCache m_pixmaps_cache;
  46     GlyphsCache m_glyphs_cache;
  47
  48     SizeCache()
  49       : m_ref_count(0) {}
  50   };
  51
  52   typedef std::map<int, SizeCache> Cache;
  53
  54   Context m_context;
  55   LuaApi::Loader m_lua_loader;
  56   Cache m_cache;
  57
  58   static PixmapOrMap to_pixmap_map(const ::LuaApi::ImageOrMap& m);
  59
  60 private Q_SLOTS:
  61   void onSettingsChanged();
  62
  63 public:
  64   /** Constructor, created the class from a lua theme file */
  65   Theme(const ThemeInfo& theme);
  66   ~Theme();
  67
  68   /** References the size \a size, enabling you to get pixmaps of size \a size */
  69   void refSize(int size);
  70
  71   /** Unreferences the size */
  72   void unrefSize(int size);
  73
  74   /** Loads a value */
  75   template<typename T>
  76   T getValue(const QString& key, int size, const ::LuaApi::LuaValueMap* args = NULL, bool allow_nil = false);
  77 };
  78
  79 } //end namespace loader
  80
  81 #endif //LOADER__THEME_H