src/mac/carbon/display.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/display.cpp
   3 // Purpose:     Mac implementation of wxDisplay class
   4 // Author:      Ryan Norton & Brian Victor
   5 // Modified by: Royce Mitchell III, Vadim Zeitlin
   6 // Created:     06/21/02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_DISPLAY
  27
  28 #include "wx/display.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/dynarray.h"
  32     #include "wx/log.h"
  33     #include "wx/string.h"
  34     #include "wx/gdicmn.h"
  35 #endif
  36
  37 #include <Carbon/Carbon.h>
  38
  39 #include "wx/display_impl.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // display classes implementation
  43 // ----------------------------------------------------------------------------
  44
  45 class wxDisplayImplMacOSX : public wxDisplayImpl
  46 {
  47 public:
  48     wxDisplayImplMacOSX(unsigned n, CGDirectDisplayID id)
  49         : wxDisplayImpl(n),
  50           m_id(id)
  51     {
  52     }
  53
  54     virtual wxRect GetGeometry() const;
  55     virtual wxRect GetClientArea() const;
  56     virtual wxString GetName() const { return wxString(); }
  57
  58     virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const;
  59     virtual wxVideoMode GetCurrentMode() const;
  60     virtual bool ChangeMode(const wxVideoMode& mode);
  61
  62 private:
  63     CGDirectDisplayID m_id;
  64
  65     DECLARE_NO_COPY_CLASS(wxDisplayImplMacOSX)
  66 };
  67
  68 class wxDisplayFactoryMacOSX : public wxDisplayFactory
  69 {
  70 public:
  71     wxDisplayFactoryMacOSX() {}
  72
  73     virtual wxDisplayImpl *CreateDisplay(unsigned n);
  74     virtual unsigned GetCount();
  75     virtual int GetFromPoint(const wxPoint& pt);
  76
  77 protected:
  78     DECLARE_NO_COPY_CLASS(wxDisplayFactoryMacOSX)
  79 };
  80
  81 // ============================================================================
  82 // wxDisplayFactoryMacOSX implementation
  83 // ============================================================================
  84
  85 unsigned wxDisplayFactoryMacOSX::GetCount()
  86 {
  87     CGDisplayCount count;
  88 #ifdef __WXDEBUG__
  89     CGDisplayErr err =
  90 #endif
  91     CGGetActiveDisplayList(0, NULL, &count);
  92
  93     wxASSERT(err == CGDisplayNoErr);
  94
  95     return count;
  96 }
  97
  98 int wxDisplayFactoryMacOSX::GetFromPoint(const wxPoint& p)
  99 {
 100     CGPoint thePoint = {(float)p.x, (float)p.y};
 101     CGDirectDisplayID theID;
 102     CGDisplayCount theCount;
 103     CGDisplayErr err = CGGetDisplaysWithPoint(thePoint, 1, &theID, &theCount);
 104     wxASSERT(err == CGDisplayNoErr);
 105
 106     int nWhich = wxNOT_FOUND;
 107
 108     if (theCount)
 109     {
 110         theCount = GetCount();
 111         CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
 112         err = CGGetActiveDisplayList(theCount, theIDs, &theCount);
 113         wxASSERT(err == CGDisplayNoErr);
 114
 115         for (nWhich = 0; nWhich < (int) theCount; ++nWhich)
 116         {
 117             if (theIDs[nWhich] == theID)
 118                 break;
 119         }
 120
 121         delete [] theIDs;
 122
 123         if (nWhich == (int) theCount)
 124         {
 125             wxFAIL_MSG(wxT("Failed to find display in display list"));
 126             nWhich = wxNOT_FOUND;
 127         }
 128     }
 129
 130     return nWhich;
 131 }
 132
 133 wxDisplayImpl *wxDisplayFactoryMacOSX::CreateDisplay(unsigned n)
 134 {
 135     CGDisplayCount theCount = GetCount();
 136     CGDirectDisplayID* theIDs = new CGDirectDisplayID[theCount];
 137
 138 #ifdef __WXDEBUG__
 139     CGDisplayErr err =
 140 #endif
 141     CGGetActiveDisplayList(theCount, theIDs, &theCount);
 142
 143     wxASSERT( err == CGDisplayNoErr );
 144     wxASSERT( n < theCount );
 145
 146     wxDisplayImplMacOSX *display = new wxDisplayImplMacOSX(n, theIDs[n]);
 147
 148     delete [] theIDs;
 149
 150     return display;
 151 }
 152
 153 // ============================================================================
 154 // wxDisplayImplMacOSX implementation
 155 // ============================================================================
 156
 157 wxRect wxDisplayImplMacOSX::GetGeometry() const
 158 {
 159     CGRect theRect = CGDisplayBounds(m_id);
 160     return wxRect( (int)theRect.origin.x,
 161                    (int)theRect.origin.y,
 162                    (int)theRect.size.width,
 163                    (int)theRect.size.height ); //floats
 164 }
 165
 166 wxRect wxDisplayImplMacOSX::GetClientArea() const
 167 {
 168     // VZ: I don't know how to get client area for arbitrary display but
 169     //     wxGetClientDisplayRect() does work correctly for at least the main
 170     //     one (TODO: do it correctly for the other displays too)
 171     if ( IsPrimary() )
 172         return wxGetClientDisplayRect();
 173
 174     return wxDisplayImpl::GetClientArea();
 175 }
 176
 177 static int wxCFDictKeyToInt( CFDictionaryRef desc, CFStringRef key )
 178 {
 179     CFNumberRef value = (CFNumberRef) CFDictionaryGetValue( desc, key );
 180     if (value == NULL)
 181         return 0;
 182
 183     int num = 0;
 184     CFNumberGetValue( value, kCFNumberIntType, &num );
 185
 186     return num;
 187 }
 188
 189 wxArrayVideoModes wxDisplayImplMacOSX::GetModes(const wxVideoMode& mode) const
 190 {
 191     wxArrayVideoModes resultModes;
 192
 193     CFArrayRef theArray = CGDisplayAvailableModes( m_id );
 194
 195     for (CFIndex i = 0; i < CFArrayGetCount(theArray); ++i)
 196     {
 197         CFDictionaryRef theValue = (CFDictionaryRef) CFArrayGetValueAtIndex( theArray, i );
 198
 199         wxVideoMode theMode(
 200             wxCFDictKeyToInt( theValue, kCGDisplayWidth ),
 201             wxCFDictKeyToInt( theValue, kCGDisplayHeight ),
 202             wxCFDictKeyToInt( theValue, kCGDisplayBitsPerPixel ),
 203             wxCFDictKeyToInt( theValue, kCGDisplayRefreshRate ));
 204
 205         if (theMode.Matches( mode ))
 206             resultModes.Add( theMode );
 207     }
 208
 209     return resultModes;
 210 }
 211
 212 wxVideoMode wxDisplayImplMacOSX::GetCurrentMode() const
 213 {
 214     CFDictionaryRef theValue = CGDisplayCurrentMode( m_id );
 215
 216     return wxVideoMode(
 217         wxCFDictKeyToInt( theValue, kCGDisplayWidth ),
 218         wxCFDictKeyToInt( theValue, kCGDisplayHeight ),
 219         wxCFDictKeyToInt( theValue, kCGDisplayBitsPerPixel ),
 220         wxCFDictKeyToInt( theValue, kCGDisplayRefreshRate ));
 221 }
 222
 223 bool wxDisplayImplMacOSX::ChangeMode( const wxVideoMode& mode )
 224 {
 225     // Changing to default mode (wxDefaultVideoMode) doesn't
 226     // work because we don't have access to the system's 'scrn'
 227     // resource which holds the user's mode which the system
 228     // will return to after this app is done
 229     boolean_t bExactMatch;
 230     CFDictionaryRef theCGMode = CGDisplayBestModeForParametersAndRefreshRate(
 231         m_id,
 232         (size_t)mode.bpp,
 233         (size_t)mode.w,
 234         (size_t)mode.h,
 235         (double)mode.refresh,
 236         &bExactMatch );
 237
 238     bool bOK = bExactMatch;
 239
 240     if (bOK)
 241         bOK = CGDisplaySwitchToMode( m_id, theCGMode ) == CGDisplayNoErr;
 242
 243     return bOK;
 244 }
 245
 246 // ============================================================================
 247 // wxDisplay::CreateFactory()
 248 // ============================================================================
 249
 250 /* static */ wxDisplayFactory *wxDisplay::CreateFactory()
 251 {
 252     return new wxDisplayFactoryMacOSX;
 253 }
 254
 255 #endif // wxUSE_DISPLAY