src/cocoa/display.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/display.mm
   3 // Purpose:     Cocoa implementation of wxDisplay class
   4 // Author:      Ryan Norton
   5 // Modified by:
   6 // Created:     2004-10-03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_DISPLAY
  20
  21 #ifndef WX_PRECOMP
  22    #include "wx/dynarray.h"
  23 #endif
  24
  25 #include "wx/display.h"
  26 #include "wx/gdicmn.h"
  27 #include "wx/string.h"
  28
  29 #import <Foundation/Foundation.h>
  30
  31 // ----------------------------------------------------------------------------
  32 // private classes
  33 // ----------------------------------------------------------------------------
  34
  35 size_t wxDisplayBase::GetCount()
  36 {
  37     CGDisplayCount count;
  38 #ifdef __WXDEBUG__
  39     CGDisplayErr err =
  40 #endif
  41     CGGetActiveDisplayList(0, NULL, &count);
  42
  43     wxASSERT(err == CGDisplayNoErr);
  44     return count;
  45 }
  46
  47 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  48 {
  49     CGPoint thePoint = {(float)p.x, (float)p.y};
  50     CGDirectDisplayID theID;
  51     CGDisplayCount theCount;
  52     CGDisplayErr err = CGGetDisplaysWithPoint(thePoint, 1, &theID, &theCount);
  53     wxASSERT(err == CGDisplayNoErr);
  54     int nWhich = -1;
  55
  56     if (theCount)
  57     {
  58         theCount = GetCount();
  59         CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
  60         err = CGGetActiveDisplayList(theCount, theIDs, &theCount);
  61         wxASSERT(err == CGDisplayNoErr);
  62
  63         for(nWhich = 0; nWhich < (int) theCount; ++nWhich)
  64         {
  65             if(theIDs[nWhich] == theID)
  66                 break;
  67         }
  68
  69         delete[] theIDs;
  70
  71         if(nWhich == (int) theCount)
  72         {
  73             wxFAIL_MSG(wxT("Failed to find display in display list"));
  74             nWhich = -1;
  75         }
  76     }
  77
  78     return nWhich;
  79 }//CFUserNotification[NSBundle bundleForClass:[self class]]
  80
  81 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index )
  82 {
  83     CGDisplayCount theCount = GetCount();
  84     CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
  85 #ifdef __WXDEBUG__
  86     CGDisplayErr err =
  87 #endif
  88     CGGetActiveDisplayList(theCount, theIDs, &theCount);
  89
  90     wxASSERT(err == CGDisplayNoErr);
  91     wxASSERT(index < theCount);
  92
  93     m_id = theIDs[index];
  94
  95     delete[] theIDs;
  96 }
  97
  98 wxRect wxDisplay::GetGeometry() const
  99 {
 100     CGRect theRect = CGDisplayBounds(m_id);
 101     return wxRect(      (int)theRect.origin.x,
 102                     (int)theRect.origin.y,
 103                     (int)theRect.size.width,
 104                     (int)theRect.size.height  ); //floats
 105 }
 106
 107 int wxDisplay::GetDepth() const
 108 {
 109     return (int) CGDisplayBitsPerPixel(m_id); //size_t
 110 }
 111
 112 wxString wxDisplay::GetName() const
 113 {
 114     // Macs don't name their displays...
 115     return wxEmptyString;
 116 }
 117
 118 static int wxCFDictKeyToInt( CFDictionaryRef desc, CFStringRef key )
 119 {
 120     CFNumberRef value;
 121     int num = 0;
 122
 123     if ( (value = (CFNumberRef) CFDictionaryGetValue(desc, key)) == NULL )
 124         return 0;
 125     CFNumberGetValue(value, kCFNumberIntType, &num);
 126     return num;
 127 }
 128
 129 wxArrayVideoModes
 130     wxDisplay::GetModes(const wxVideoMode& mode) const
 131 {
 132     wxArrayVideoModes Modes;
 133
 134     CFArrayRef theArray = CGDisplayAvailableModes(m_id);
 135
 136     for(CFIndex i = 0; i < CFArrayGetCount(theArray); ++i)
 137     {
 138         CFDictionaryRef theValue = (CFDictionaryRef) CFArrayGetValueAtIndex(theArray, i);
 139
 140         wxVideoMode theMode(wxCFDictKeyToInt(theValue, kCGDisplayWidth),
 141                             wxCFDictKeyToInt(theValue, kCGDisplayHeight),
 142                             wxCFDictKeyToInt(theValue, kCGDisplayBitsPerPixel),
 143                             wxCFDictKeyToInt(theValue, kCGDisplayRefreshRate));
 144
 145         if (theMode.Matches(mode))
 146             Modes.Add(theMode);
 147     }
 148
 149     return Modes;
 150 }
 151
 152 wxVideoMode wxDisplay::GetCurrentMode() const
 153 {
 154     CFDictionaryRef theValue = CGDisplayCurrentMode (m_id);
 155
 156     return wxVideoMode(wxCFDictKeyToInt(theValue, kCGDisplayWidth),
 157                             wxCFDictKeyToInt(theValue, kCGDisplayHeight),
 158                             wxCFDictKeyToInt(theValue, kCGDisplayBitsPerPixel),
 159                             wxCFDictKeyToInt(theValue, kCGDisplayRefreshRate));
 160 }
 161
 162 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 163 {
 164     //Changing to default mode (wxDefualtVideoMode) doesn't
 165     //work because we don't have access to the system's 'scrn'
 166     //resource which holds the user's mode which the system
 167     //will return to after this app is done
 168     boolean_t bExactMatch;
 169     CFDictionaryRef theCGMode = CGDisplayBestModeForParametersAndRefreshRate (
 170                                         m_id,
 171                                         (size_t)mode.bpp,
 172                                         (size_t)mode.w,
 173                                         (size_t)mode.h,
 174                                         (double)mode.refresh,
 175                                         &bExactMatch);
 176
 177     bool bOK = bExactMatch;
 178
 179     if(bOK)
 180         bOK = CGDisplaySwitchToMode(m_id, theCGMode) == CGDisplayNoErr;
 181
 182     return bOK;
 183 }
 184
 185 wxDisplay::~wxDisplay()
 186 {
 187 }
 188
 189 #endif // wxUSE_DISPLAY