contrib/ncurses-5.4/c++/cursesapp.h

   1 // * This makes emacs happy -*-Mode: C++;-*-
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   3  * Copyright (c) 1998-2002,2003 Free Software Foundation, Inc.              *
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  29
  30 /****************************************************************************
  31  *   Author: Juergen Pfeifer, 1997                                          *
  32  ****************************************************************************/
  33
  34 // $Id: cursesapp.h,v 1.9 2003/10/25 15:04:46 tom Exp $
  35
  36 #ifndef NCURSES_CURSESAPP_H_incl
  37 #define NCURSES_CURSESAPP_H_incl
  38
  39 #include <cursslk.h>
  40
  41 class NCURSES_IMPEXP NCursesApplication {
  42 public:
  43   typedef struct _slk_link {          // This structure is used to maintain
  44     struct _slk_link* prev;           // a stack of SLKs
  45     Soft_Label_Key_Set* SLKs;
  46   } SLK_Link;
  47 private:
  48   static int rinit(NCursesWindow& w); // Internal Init function for title
  49   static NCursesApplication* theApp;  // Global ref. to the application
  50
  51   static SLK_Link* slk_stack;
  52
  53 protected:
  54   static NCursesWindow* titleWindow;  // The Title Window (if any)
  55
  56   bool b_Colors;                      // Is this a color application?
  57   NCursesWindow* Root_Window;         // This is the stdscr equiv.
  58
  59   // Initialization of attributes;
  60   // Rewrite this in your derived class if you prefer other settings
  61   virtual void init(bool bColors);
  62
  63   // The number of lines for the title window. Default is no title window
  64   // You may rewrite this in your derived class
  65   virtual int titlesize() const {
  66     return 0;
  67   }
  68
  69   // This method is called to put something into the title window initially
  70   // You may rewrite this in your derived class
  71   virtual void title() {
  72   }
  73
  74   // The layout used for the Soft Label Keys. Default is to have no SLKs.
  75   // You may rewrite this in your derived class
  76   virtual Soft_Label_Key_Set::Label_Layout useSLKs() const {
  77     return Soft_Label_Key_Set::None;
  78   }
  79
  80   // This method is called to initialize the SLKs. Default is nothing.
  81   // You may rewrite this in your derived class
  82   virtual void init_labels(Soft_Label_Key_Set& S) const {
  83   }
  84
  85   // Your derived class must implement this method. The return value must
  86   // be the exit value of your application.
  87   virtual int run() = 0;
  88
  89
  90   // The constructor is protected, so you may use it in your derived
  91   // class constructor. The argument tells whether or not you want colors.
  92   NCursesApplication(bool wantColors = FALSE);
  93
  94 public:
  95   virtual ~NCursesApplication();
  96
  97   // Get a pointer to the current application object
  98   static NCursesApplication* getApplication() {
  99     return theApp;
 100   }
 101
 102   // This method runs the application and returns its exit value
 103   int operator()(void);
 104
 105   // Process the commandline arguments. The default implementation simply
 106   // ignores them. Your derived class may rewrite this.
 107   virtual void handleArgs(int argc, char* argv[]) {
 108   }
 109
 110   // Does this application use colors?
 111   inline bool useColors() const {
 112     return b_Colors;
 113   }
 114
 115   // Push the Key Set S onto the SLK Stack. S then becomes the current set
 116   // of Soft Labelled Keys.
 117   void push(Soft_Label_Key_Set& S);
 118
 119   // Throw away the current set of SLKs and make the previous one the
 120   // new current set.
 121   bool pop();
 122
 123   // Retrieve the current set of Soft Labelled Keys.
 124   Soft_Label_Key_Set* top() const;
 125
 126   // Attributes to use for menu and forms foregrounds
 127   virtual chtype foregrounds() const {
 128     return b_Colors ? COLOR_PAIR(1) : A_BOLD;
 129   }
 130
 131   // Attributes to use for menu and forms backgrounds
 132   virtual chtype backgrounds() const {
 133     return b_Colors ? COLOR_PAIR(2) : A_NORMAL;
 134   }
 135
 136   // Attributes to use for inactive (menu) elements
 137   virtual chtype inactives() const {
 138     return b_Colors ? (COLOR_PAIR(3)|A_DIM) : A_DIM;
 139   }
 140
 141   // Attributes to use for (form) labels and SLKs
 142   virtual chtype labels() const {
 143     return b_Colors ? COLOR_PAIR(4) : A_NORMAL;
 144   }
 145
 146   // Attributes to use for form backgrounds
 147   virtual chtype dialog_backgrounds() const {
 148     return b_Colors ? COLOR_PAIR(4) : A_NORMAL;
 149   }
 150
 151   // Attributes to use as default for (form) window backgrounds
 152   virtual chtype window_backgrounds() const {
 153     return b_Colors ? COLOR_PAIR(5) : A_NORMAL;
 154   }
 155
 156   // Attributes to use for the title window
 157   virtual chtype screen_titles() const {
 158     return b_Colors ? COLOR_PAIR(6) : A_BOLD;
 159   }
 160
 161 };
 162
 163 #endif // NCURSES_CURSESAPP_H_incl