kworship/css/KwCssStandardise.h

   1 /***************************************************************************
   2  *   This file is part of KWorship.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   KWorship 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  *   KWorship is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with KWorship.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 #ifndef _KwCssStandardise_h_
  21 #define _KwCssStandardise_h_
  22
  23 /**
  24  * @file KwCssStandardise.h
  25  * @brief Macros for css standardisation.
  26  * @author James Hogan <james@albanarts.com>
  27  */
  28
  29 #include "KwCssScope.h"
  30 #include "KwCssSchema.h"
  31
  32 /// Simple class for accessing a style.
  33 template <typename T>
  34 class KwCssStyleAccessor
  35 {
  36   public:
  37     virtual ~KwCssStyleAccessor()
  38     {
  39     }
  40     /*
  41      * Main interface
  42      */
  43     T operator () (const KwCssScope* scope) const
  44     {
  45       return scope->getStyles().getStyle<T>(getName());
  46     }
  47
  48     void registerToSchema(KwCssSchema* schema) const
  49     {
  50       schema->registerProperty<T>(getName());
  51     }
  52   protected:
  53     virtual QString getName() const = 0;
  54 };
  55
  56 #define KWCSS_SCHEMA \
  57   inline KwCssSchema* schema() \
  58   { \
  59     static KwCssSchema* s = 0; \
  60     if (0 == s) \
  61     { \
  62       s = new KwCssSchema; \
  63     } \
  64     return s; \
  65   }
  66
  67 /// Start the root css namespace.
  68 #define KWCSS_ROOT_NAMESPACE(NAME) \
  69   namespace NAME \
  70   { \
  71     inline QString _scopeName() \
  72     { \
  73       return #NAME; \
  74     }
  75
  76 /// Start a non-root css namespace.
  77 #define KWCSS_START_NAMESPACE(PREV,NAME) \
  78   namespace NAME \
  79   { \
  80     inline QString _scopeName() \
  81     { \
  82       return #PREV "." #NAME; \
  83     }
  84
  85 /// End a css namespace.
  86 #define KWCSS_END_NAMESPACE() \
  87   };
  88
  89 /// Define a property in a css namespace.
  90 #define KWCSS_DEFINE_PROPERTY(TYPE, LNAME) \
  91   KWCSS_EXTERN class Acc_##LNAME : public KwCssStyleAccessor< TYPE > \
  92   { \
  93     public: \
  94       Acc_##LNAME() \
  95       { \
  96         registerToSchema(schema()); \
  97       } \
  98     protected: \
  99       virtual QString getName() const \
 100       { \
 101         QString name = _scopeName(); \
 102         name.append("." #LNAME); \
 103         return name; \
 104       } \
 105   } LNAME;
 106
 107 #define KWCSS_EXTERN extern
 108
 109 #endif // _KwCssStandardise_h_
 110