include/wx/univ/inphand.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/univ/inphand.h
   3 // Purpose:     wxInputHandler class maps the keyboard and mouse events to the
   4 //              actions which then are performed by the control
   5 // Author:      Vadim Zeitlin
   6 // Modified by:
   7 // Created:     18.08.00
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
  10 // Licence:     wxWindows license
  11 ///////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_UNIV_INPHAND_H_
  14 #define _WX_UNIV_INPHAND_H_
  15
  16 #ifdef __GNUG__
  17     #pragma interface "inphand.h"
  18 #endif
  19
  20 #include "wx/univ/inpcons.h"         // for wxControlAction(s)
  21
  22 // ----------------------------------------------------------------------------
  23 // types of the standard input handlers which can be passed to
  24 // wxTheme::GetInputHandler()
  25 // ----------------------------------------------------------------------------
  26
  27 #define wxINP_HANDLER_DEFAULT           _T("")
  28 #define wxINP_HANDLER_BUTTON            _T("button")
  29 #define wxINP_HANDLER_CHECKBOX          _T("checkbox")
  30 #define wxINP_HANDLER_CHECKLISTBOX      _T("checklistbox")
  31 #define wxINP_HANDLER_COMBOBOX          _T("combobox")
  32 #define wxINP_HANDLER_LISTBOX           _T("listbox")
  33 #define wxINP_HANDLER_NOTEBOOK          _T("notebook")
  34 #define wxINP_HANDLER_RADIOBTN          _T("radiobtn")
  35 #define wxINP_HANDLER_SCROLLBAR         _T("scrollbar")
  36 #define wxINP_HANDLER_SLIDER            _T("slider")
  37 #define wxINP_HANDLER_SPINBTN           _T("spinbtn")
  38 #define wxINP_HANDLER_STATUSBAR         _T("statusbar")
  39 #define wxINP_HANDLER_TEXTCTRL          _T("textctrl")
  40 #define wxINP_HANDLER_TOOLBAR           _T("toolbar")
  41 #define wxINP_HANDLER_TOPLEVEL          _T("toplevel")
  42
  43 // ----------------------------------------------------------------------------
  44 // wxInputHandler: maps the events to the actions
  45 // ----------------------------------------------------------------------------
  46
  47 class WXDLLEXPORT wxInputHandler : public wxObject
  48 {
  49 public:
  50     // map a keyboard event to one or more actions (pressed == TRUE if the key
  51     // was pressed, FALSE if released), returns TRUE if something was done
  52     virtual bool HandleKey(wxInputConsumer *consumer,
  53                            const wxKeyEvent& event,
  54                            bool pressed) = 0;
  55
  56     // map a mouse (click) event to one or more actions
  57     virtual bool HandleMouse(wxInputConsumer *consumer,
  58                              const wxMouseEvent& event) = 0;
  59
  60     // handle mouse movement (or enter/leave) event: it is separated from
  61     // HandleMouse() for convenience as many controls don't care about mouse
  62     // movements at all
  63     virtual bool HandleMouseMove(wxInputConsumer *consumer,
  64                                  const wxMouseEvent& event);
  65
  66     // do something with focus set/kill event: this is different from
  67     // HandleMouseMove() as the mouse maybe over the control without it having
  68     // focus
  69     //
  70     // return TRUE to refresh the control, FALSE otherwise
  71     virtual bool HandleFocus(wxInputConsumer *consumer, const wxFocusEvent& event);
  72
  73     // react to the app getting/losing activation
  74     //
  75     // return TRUE to refresh the control, FALSE otherwise
  76     virtual bool HandleActivation(wxInputConsumer *consumer, bool activated);
  77
  78     // virtual dtor for any base class
  79     virtual ~wxInputHandler();
  80 };
  81
  82 // ----------------------------------------------------------------------------
  83 // wxStdInputHandler is just a base class for all other "standard" handlers
  84 // and also provides the way to chain input handlers together
  85 // ----------------------------------------------------------------------------
  86
  87 class WXDLLEXPORT wxStdInputHandler : public wxInputHandler
  88 {
  89 public:
  90     wxStdInputHandler(wxInputHandler *handler) : m_handler(handler) { }
  91
  92     virtual bool HandleKey(wxInputConsumer *consumer,
  93                            const wxKeyEvent& event,
  94                            bool pressed)
  95     {
  96         return m_handler ? m_handler->HandleKey(consumer, event, pressed)
  97                          : FALSE;
  98     }
  99
 100     virtual bool HandleMouse(wxInputConsumer *consumer,
 101                              const wxMouseEvent& event)
 102     {
 103         return m_handler ? m_handler->HandleMouse(consumer, event) : FALSE;
 104     }
 105
 106     virtual bool HandleMouseMove(wxInputConsumer *consumer, const wxMouseEvent& event)
 107     {
 108         return m_handler ? m_handler->HandleMouseMove(consumer, event) : FALSE;
 109     }
 110
 111     virtual bool HandleFocus(wxInputConsumer *consumer, const wxFocusEvent& event)
 112     {
 113         return m_handler ? m_handler->HandleFocus(consumer, event) : FALSE;
 114     }
 115
 116 private:
 117     wxInputHandler *m_handler;
 118 };
 119
 120 #endif // _WX_UNIV_INPHAND_H_