include/wx/display_impl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/display_impl.h
   3 // Purpose:     wxDisplayImpl class declaration
   4 // Author:      Vadim Zeitlin
   5 // Created:     2006-03-15
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2002-2006 Vadim Zeitlin <vadim@wxwindows.org>
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_DISPLAY_IMPL_H_BASE_
  12 #define _WX_DISPLAY_IMPL_H_BASE_
  13
  14 #include "wx/gdicmn.h"      // for wxRect
  15
  16 // ----------------------------------------------------------------------------
  17 // wxDisplayFactory: allows to create wxDisplay objects
  18 // ----------------------------------------------------------------------------
  19
  20 class WXDLLEXPORT wxDisplayFactory
  21 {
  22 public:
  23     wxDisplayFactory() { }
  24     virtual ~wxDisplayFactory() { }
  25
  26     // create a new display object
  27     //
  28     // it can return a NULL pointer if the display creation failed
  29     virtual wxDisplayImpl *CreateDisplay(unsigned n) = 0;
  30
  31     // get the total number of displays
  32     virtual unsigned GetCount() = 0;
  33
  34     // return the display for the given point or wxNOT_FOUND
  35     virtual int GetFromPoint(const wxPoint& pt) = 0;
  36
  37     // return the display for the given window or wxNOT_FOUND
  38     //
  39     // the window pointer must not be NULL (i.e. caller should check it)
  40     virtual int GetFromWindow(wxWindow *window);
  41 };
  42
  43 // ----------------------------------------------------------------------------
  44 // wxDisplayImpl: base class for all wxDisplay implementations
  45 // ----------------------------------------------------------------------------
  46
  47 class WXDLLEXPORT wxDisplayImpl
  48 {
  49 public:
  50     // virtual dtor for this base class
  51     virtual ~wxDisplayImpl() { }
  52
  53
  54     // return the full area of this display
  55     virtual wxRect GetGeometry() const = 0;
  56
  57     // return the area of the display available for normal windows
  58     virtual wxRect GetClientArea() const { return GetGeometry(); }
  59
  60     // return the name (may be empty)
  61     virtual wxString GetName() const = 0;
  62
  63     // return the index of this display
  64     unsigned GetIndex() const { return m_index; }
  65
  66     // return true if this is the primary monitor (usually one with index 0)
  67     virtual bool IsPrimary() const { return GetIndex() == 0; }
  68
  69
  70 #if wxUSE_DISPLAY
  71     // implements wxDisplay::GetModes()
  72     virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const = 0;
  73
  74     // get current video mode
  75     virtual wxVideoMode GetCurrentMode() const = 0;
  76
  77     // change current mode, return true if succeeded, false otherwise
  78     virtual bool ChangeMode(const wxVideoMode& mode) = 0;
  79 #endif // wxUSE_DISPLAY
  80
  81 protected:
  82     // create the object providing access to the display with the given index
  83     wxDisplayImpl(unsigned n) : m_index(n) { }
  84
  85
  86     // the index of this display (0 is always the primary one)
  87     const unsigned m_index;
  88
  89
  90     friend class wxDisplayFactory;
  91
  92     DECLARE_NO_COPY_CLASS(wxDisplayImpl)
  93 };
  94
  95 // ----------------------------------------------------------------------------
  96 // wxDisplayFactorySingle
  97 // ----------------------------------------------------------------------------
  98
  99 // this is a stub implementation using single/main display only, it is
 100 // available even if wxUSE_DISPLAY == 0
 101 class WXDLLEXPORT wxDisplayFactorySingle : public wxDisplayFactory
 102 {
 103 public:
 104     virtual wxDisplayImpl *CreateDisplay(unsigned n);
 105     virtual unsigned GetCount() { return 1; }
 106     virtual int GetFromPoint(const wxPoint& pt);
 107 };
 108
 109 #endif // _WX_DISPLAY_IMPL_H_BASE_
 110