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 #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 #include "wx/display.h"
  30 #include "wx/gdicmn.h"
  31 #include "wx/string.h"
  32
  33 #import <Foundation/Foundation.h>
  34
  35 // ----------------------------------------------------------------------------
  36 // private classes
  37 // ----------------------------------------------------------------------------
  38
  39 size_t wxDisplayBase::GetCount()
  40 {
  41     CGDisplayCount count;
  42 #ifdef __WXDEBUG__
  43     CGDisplayErr err =
  44 #endif
  45     CGGetActiveDisplayList(0, NULL, &count);
  46
  47     wxASSERT(err == CGDisplayNoErr);
  48     return count;
  49 }
  50
  51 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  52 {
  53     CGPoint thePoint = {(float)p.x, (float)p.y};
  54     CGDirectDisplayID theID;
  55     CGDisplayCount theCount;
  56     CGDisplayErr err = CGGetDisplaysWithPoint(thePoint, 1, &theID, &theCount);
  57     wxASSERT(err == CGDisplayNoErr);
  58     int nWhich = -1;
  59
  60     if (theCount)
  61     {
  62         theCount = GetCount();
  63         CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
  64         err = CGGetActiveDisplayList(theCount, theIDs, &theCount);
  65         wxASSERT(err == CGDisplayNoErr);
  66
  67         for(nWhich = 0; nWhich < (int) theCount; ++nWhich)
  68         {
  69             if(theIDs[nWhich] == theID)
  70                 break;
  71         }
  72
  73         delete[] theIDs;
  74
  75         if(nWhich == (int) theCount)
  76         {
  77             wxFAIL_MSG(wxT("Failed to find display in display list"));
  78             nWhich = -1;
  79         }
  80     }
  81
  82     return nWhich;
  83 }//CFUserNotification[NSBundle bundleForClass:[self class]]
  84
  85 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index )
  86 {
  87     CGDisplayCount theCount = GetCount();
  88     CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
  89 #ifdef __WXDEBUG__
  90     CGDisplayErr err =
  91 #endif
  92     CGGetActiveDisplayList(theCount, theIDs, &theCount);
  93
  94     wxASSERT(err == CGDisplayNoErr);
  95     wxASSERT(index < theCount);
  96
  97     m_id = theIDs[index];
  98
  99     delete[] theIDs;
 100 }
 101
 102 wxRect wxDisplay::GetGeometry() const
 103 {
 104     CGRect theRect = CGDisplayBounds(m_id);
 105     return wxRect(      (int)theRect.origin.x,
 106                     (int)theRect.origin.y,
 107                     (int)theRect.size.width,
 108                     (int)theRect.size.height  ); //floats
 109 }
 110
 111 int wxDisplay::GetDepth() const
 112 {
 113     return (int) CGDisplayBitsPerPixel(m_id); //size_t
 114 }
 115
 116 wxString wxDisplay::GetName() const
 117 {
 118     // Macs don't name their displays...
 119     return wxEmptyString;
 120 }
 121
 122 static int wxCFDictKeyToInt( CFDictionaryRef desc, CFStringRef key )
 123 {
 124     CFNumberRef value;
 125     int num = 0;
 126
 127     if ( (value = (CFNumberRef) CFDictionaryGetValue(desc, key)) == NULL )
 128         return 0;
 129     CFNumberGetValue(value, kCFNumberIntType, &num);
 130     return num;
 131 }
 132
 133 wxArrayVideoModes
 134     wxDisplay::GetModes(const wxVideoMode& mode) const
 135 {
 136     wxArrayVideoModes Modes;
 137
 138     CFArrayRef theArray = CGDisplayAvailableModes(m_id);
 139
 140     for(CFIndex i = 0; i < CFArrayGetCount(theArray); ++i)
 141     {
 142         CFDictionaryRef theValue = (CFDictionaryRef) CFArrayGetValueAtIndex(theArray, i);
 143
 144         wxVideoMode theMode(wxCFDictKeyToInt(theValue, kCGDisplayWidth),
 145                             wxCFDictKeyToInt(theValue, kCGDisplayHeight),
 146                             wxCFDictKeyToInt(theValue, kCGDisplayBitsPerPixel),
 147                             wxCFDictKeyToInt(theValue, kCGDisplayRefreshRate));
 148
 149         if (theMode.Matches(mode))
 150             Modes.Add(theMode);
 151     }
 152
 153     return Modes;
 154 }
 155
 156 wxVideoMode wxDisplay::GetCurrentMode() const
 157 {
 158     CFDictionaryRef theValue = CGDisplayCurrentMode (m_id);
 159
 160     return wxVideoMode(wxCFDictKeyToInt(theValue, kCGDisplayWidth),
 161                             wxCFDictKeyToInt(theValue, kCGDisplayHeight),
 162                             wxCFDictKeyToInt(theValue, kCGDisplayBitsPerPixel),
 163                             wxCFDictKeyToInt(theValue, kCGDisplayRefreshRate));
 164 }
 165
 166 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 167 {
 168     //Changing to default mode (wxDefualtVideoMode) doesn't
 169     //work because we don't have access to the system's 'scrn'
 170     //resource which holds the user's mode which the system
 171     //will return to after this app is done
 172     boolean_t bExactMatch;
 173     CFDictionaryRef theCGMode = CGDisplayBestModeForParametersAndRefreshRate (
 174                                         m_id,
 175                                         (size_t)mode.bpp,
 176                                         (size_t)mode.w,
 177                                         (size_t)mode.h,
 178                                         (double)mode.refresh,
 179                                         &bExactMatch);
 180
 181     bool bOK = bExactMatch;
 182
 183     if(bOK)
 184         bOK = CGDisplaySwitchToMode(m_id, theCGMode) == CGDisplayNoErr;
 185
 186     return bOK;
 187 }
 188
 189 wxDisplay::~wxDisplay()
 190 {
 191 }
 192
 193 #endif // wxUSE_DISPLAY