include/wx/mousestate.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/mousestate.h
   3 // Purpose:     Declaration of wxMouseState class
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-09-19 (extracted from wx/utils.h)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_MOUSESTATE_H_
  12 #define _WX_MOUSESTATE_H_
  13
  14 #include "wx/kbdstate.h"
  15
  16 // the symbolic names for the mouse buttons
  17 enum wxMouseButton
  18 {
  19     wxMOUSE_BTN_ANY     = -1,
  20     wxMOUSE_BTN_NONE    = 0,
  21     wxMOUSE_BTN_LEFT    = 1,
  22     wxMOUSE_BTN_MIDDLE  = 2,
  23     wxMOUSE_BTN_RIGHT   = 3,
  24     wxMOUSE_BTN_AUX1    = 4,
  25     wxMOUSE_BTN_AUX2    = 5,
  26     wxMOUSE_BTN_MAX
  27 };
  28
  29 // ----------------------------------------------------------------------------
  30 // wxMouseState contains the information about mouse position, buttons and also
  31 // key modifiers
  32 // ----------------------------------------------------------------------------
  33
  34 // wxMouseState is used to hold information about button and modifier state
  35 // and is what is returned from wxGetMouseState.
  36 class WXDLLIMPEXP_CORE wxMouseState : public wxKeyboardState
  37 {
  38 public:
  39     wxMouseState()
  40         : m_leftDown(false), m_middleDown(false), m_rightDown(false),
  41           m_aux1Down(false), m_aux2Down(false),
  42           m_x(0), m_y(0)
  43     {
  44     }
  45
  46     // default copy ctor, assignment operator and dtor are ok
  47
  48
  49     // accessors for the mouse position
  50     wxCoord GetX() const { return m_x; }
  51     wxCoord GetY() const { return m_y; }
  52     wxPoint GetPosition() const { return wxPoint(m_x, m_y); }
  53     void GetPosition(wxCoord *x, wxCoord *y) const
  54     {
  55         if ( x )
  56             *x = m_x;
  57         if ( y )
  58             *y = m_y;
  59     }
  60
  61     // this overload is for compatibility only
  62     void GetPosition(long *x, long *y) const
  63     {
  64         if ( x )
  65             *x = m_x;
  66         if ( y )
  67             *y = m_y;
  68     }
  69
  70     // accessors for the pressed buttons
  71     bool LeftIsDown()    const { return m_leftDown; }
  72     bool MiddleIsDown()  const { return m_middleDown; }
  73     bool RightIsDown()   const { return m_rightDown; }
  74     bool Aux1IsDown()    const { return m_aux1Down; }
  75     bool Aux2IsDown()    const { return m_aux2Down; }
  76
  77     bool ButtonIsDown(wxMouseButton but) const
  78     {
  79         switch ( but )
  80         {
  81             default:
  82                 wxFAIL_MSG(wxT("invalid parameter in wxMouseState::ButtonIsDown"));
  83                 // fall through
  84
  85             case wxMOUSE_BTN_ANY:
  86                 return LeftIsDown() || MiddleIsDown() || RightIsDown() ||
  87                             Aux1IsDown() || Aux2IsDown();
  88
  89             case wxMOUSE_BTN_LEFT:
  90                 return LeftIsDown();
  91
  92             case wxMOUSE_BTN_MIDDLE:
  93                 return MiddleIsDown();
  94
  95             case wxMOUSE_BTN_RIGHT:
  96                 return RightIsDown();
  97
  98             case wxMOUSE_BTN_AUX1:
  99                 return Aux1IsDown();
 100
 101             case wxMOUSE_BTN_AUX2:
 102                 return Aux2IsDown();
 103         }
 104     }
 105
 106
 107     // these functions are mostly used by wxWidgets itself
 108     void SetX(wxCoord x) { m_x = x; }
 109     void SetY(wxCoord y) { m_y = y; }
 110     void SetPosition(wxPoint pos) { m_x = pos.x, m_y = pos.y; }
 111
 112     void SetLeftDown(bool down)   { m_leftDown = down; }
 113     void SetMiddleDown(bool down) { m_middleDown = down; }
 114     void SetRightDown(bool down)  { m_rightDown = down; }
 115     void SetAux1Down(bool down)   { m_aux1Down = down; }
 116     void SetAux2Down(bool down)   { m_aux2Down = down; }
 117
 118     // this mostly makes sense in the derived classes such as wxMouseEvent
 119     void SetState(const wxMouseState& state) { *this = state; }
 120
 121
 122     // for compatibility reasons these variables are public as the code using
 123     // wxMouseEvent often uses them directly -- however they should not be
 124     // accessed directly in this class, use the accessors above instead
 125 // private:
 126     bool m_leftDown   : 1;
 127     bool m_middleDown : 1;
 128     bool m_rightDown  : 1;
 129     bool m_aux1Down   : 1;
 130     bool m_aux2Down   : 1;
 131
 132     wxCoord m_x,
 133             m_y;
 134 };
 135
 136 #endif // _WX_MOUSESTATE_H_
 137