src/mac/display.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        display.cpp
   3 // Purpose:     Mac implementation of wxDisplay class
   4 // Author:      Brian Victor
   5 // Modified by: Royce Mitchell III
   6 // Created:     06/21/02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "display.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_DISPLAY
  24
  25 #ifndef WX_PRECOMP
  26    #include "wx/dynarray.h"
  27 #endif
  28
  29 #ifdef __DARWIN__
  30     #include <Carbon/Carbon.h>
  31 #else
  32     #include <Displays.h>
  33     #include <Quickdraw.h>
  34 #endif
  35
  36 #include "wx/display.h"
  37 #include "wx/gdicmn.h"
  38 #include "wx/string.h"
  39
  40 // ----------------------------------------------------------------------------
  41 // private classes
  42 // ----------------------------------------------------------------------------
  43
  44 class wxDisplayMacPriv
  45 {
  46 public:
  47         GDHandle m_hndl;
  48 };
  49
  50 size_t wxDisplayBase::GetCount()
  51 {
  52     GDHandle hndl;
  53     size_t num = 0;
  54     hndl = DMGetFirstScreenDevice(true);
  55     while(hndl)
  56     {
  57         num++;
  58         hndl = DMGetNextScreenDevice(hndl, true);
  59     }
  60     return num;
  61 }
  62
  63 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  64 {
  65     GDHandle hndl;
  66     size_t num = 0;
  67     hndl = DMGetFirstScreenDevice(true);
  68     while(hndl)
  69     {
  70         Rect screenrect = (*hndl)->gdRect;
  71         if (p.x >= screenrect.left &&
  72             p.x <= screenrect.right &&
  73             p.y >= screenrect.top &&
  74             p.y <= screenrect.bottom)
  75         {
  76             return num;
  77         }
  78         num++;
  79         hndl = DMGetNextScreenDevice(hndl, true);
  80     }
  81     return -1;
  82 }
  83
  84 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ),
  85     m_priv ( new wxDisplayMacPriv() )
  86 {
  87     GDHandle hndl;
  88     hndl = DMGetFirstScreenDevice(true);
  89     m_priv->m_hndl = NULL;
  90     while(hndl)
  91     {
  92         if (index == 0)
  93         {
  94             m_priv->m_hndl = hndl;
  95         }
  96         index--;
  97         hndl = DMGetNextScreenDevice(hndl, true);
  98     }
  99 }
 100
 101 wxRect wxDisplay::GetGeometry() const
 102 {
 103     if (!(m_priv)) return wxRect(0, 0, 0, 0);
 104     if (!(m_priv->m_hndl)) return wxRect(0, 0, 0, 0);
 105     Rect screenrect = (*(m_priv->m_hndl))->gdRect;
 106     return wxRect( screenrect.left, screenrect.top,
 107                    screenrect.right - screenrect.left, screenrect.bottom - screenrect.top);
 108 }
 109
 110 int wxDisplay::GetDepth() const
 111 {
 112     if (!(m_priv)) return 0;
 113     if (!(m_priv->m_hndl)) return 0;
 114
 115     // This cryptic looking code is based on Apple's sample code:
 116     // http://developer.apple.com/samplecode/Sample_Code/Graphics_2D/GDevVideo/Gen.cp.htm
 117     return ((*(*(m_priv->m_hndl))->gdPMap)->pixelSize) & 0x0000FFFF;
 118 }
 119
 120 wxString wxDisplay::GetName() const
 121 {
 122     // Macs don't name their displays...
 123     return wxT("");
 124 }
 125
 126 wxDisplay::~wxDisplay()
 127 {
 128     if ( m_priv )
 129     {
 130         delete m_priv;
 131         m_priv = 0;
 132     }
 133 }
 134
 135 #endif // wxUSE_DISPLAY