src/loader/theme.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   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
  20 namespace Loader {
  21
  22 typedef std::map<QRect, QPixmap, ::LuaApi::RectLess> PixmapMap;
  23 typedef boost::variant<QPixmap, PixmapMap> PixmapOrMap;
  24
  25 /**
  26   * @class Theme <loader/theme.h>
  27   * @brief A class that represents and caches all images loaded by a theme.
  28   *
  29   * This class will be created once for each lua-scripted theme, and will cache
  30   * images loaded from that theme.
  31   */
  32 class Theme : public QObject {
  33 Q_OBJECT
  34
  35 private:
  36   QString m_file;
  37
  38   /** there will be one such class for each size, and i will store pixmaps and glyphs */
  39   class SizeCache {
  40   public:
  41     typedef std::map<QString, PixmapOrMap> PixmapsCache;
  42     typedef std::map<QString, Glyph> GlyphsCache;
  43     int m_ref_count;
  44     PixmapsCache m_pixmaps_cache;
  45     GlyphsCache m_glyphs_cache;
  46
  47     SizeCache()
  48       : m_ref_count(0) {}
  49   };
  50
  51   typedef std::map<int, SizeCache> Cache;
  52
  53   Context m_context;
  54   LuaApi::Loader m_lua_loader;
  55   Cache m_cache;
  56
  57   static PixmapOrMap to_pixmap_map(const ::LuaApi::ImageOrMap& m);
  58
  59 private slots:
  60   void onSettingsChanged();
  61
  62 public:
  63   /** Constructor, created the class from a lua theme file */
  64   Theme(const QString& lua_file);
  65   ~Theme();
  66
  67   /** References the size \a size, enabling you to get pixmaps of size \a size */
  68   void refSize(int size);
  69
  70   /** Unreferences the size */
  71   void unrefSize(int size);
  72
  73   /** Loads a pixmap */
  74   QPixmap getPixmap(const QString& key, int size);
  75
  76   /** Loads a pixmap -or- map of rects->pixmaps */
  77   PixmapOrMap getPixmapMap(const QString& key, int size);
  78
  79   /** Loads a glyph */
  80   Glyph getGlyph(const QString& key, int size);
  81 };
  82
  83 } //end namespace loader
  84
  85 #endif //LOADER__THEME_H