src/mac/carbon/display.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        display.cpp
   3 // Purpose:     Mac implementation of wxDisplay class
   4 // Author:      Brian Victor
   5 // Modified by: Royce Mitchell III & Ryan Norton
   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    #include "wx/log.h"
  28 #endif
  29
  30 #ifdef __DARWIN__
  31     #include <Carbon/Carbon.h>
  32 #else
  33     #include <Gestalt.h>
  34     #include <Displays.h>
  35     #include <Quickdraw.h>
  36     #include <Video.h>  //for VDSwitchInfoRec
  37     #include <FixMath.h>
  38 #endif
  39
  40 #include "wx/display.h"
  41 #include "wx/gdicmn.h"
  42 #include "wx/string.h"
  43
  44 // ----------------------------------------------------------------------------
  45 // private classes
  46 // ----------------------------------------------------------------------------
  47
  48 class wxDisplayMacPriv
  49 {
  50 public:
  51     GDHandle m_hndl;
  52 };
  53
  54 size_t wxDisplayBase::GetCount()
  55 {
  56     GDHandle hndl;
  57     size_t num = 0;
  58     hndl = DMGetFirstScreenDevice(true);
  59     while(hndl)
  60     {
  61         num++;
  62         hndl = DMGetNextScreenDevice(hndl, true);
  63     }
  64     return num;
  65 }
  66
  67 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  68 {
  69     GDHandle hndl;
  70     size_t num = 0;
  71     hndl = DMGetFirstScreenDevice(true);
  72     while(hndl)
  73     {
  74         Rect screenrect = (*hndl)->gdRect;
  75         if (p.x >= screenrect.left &&
  76             p.x <= screenrect.right &&
  77             p.y >= screenrect.top &&
  78             p.y <= screenrect.bottom)
  79         {
  80             return num;
  81         }
  82         num++;
  83         hndl = DMGetNextScreenDevice(hndl, true);
  84     }
  85     return -1;
  86 }
  87
  88 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ),
  89     m_priv ( new wxDisplayMacPriv() )
  90 {
  91     GDHandle hndl;
  92     hndl = DMGetFirstScreenDevice(true);
  93     m_priv->m_hndl = NULL;
  94     while(hndl)
  95     {
  96         if (index == 0)
  97         {
  98             m_priv->m_hndl = hndl;
  99         }
 100         index--;
 101         hndl = DMGetNextScreenDevice(hndl, true);
 102     }
 103 }
 104
 105 wxRect wxDisplay::GetGeometry() const
 106 {
 107     if (!(m_priv)) return wxRect(0, 0, 0, 0);
 108     if (!(m_priv->m_hndl)) return wxRect(0, 0, 0, 0);
 109     Rect screenrect = (*(m_priv->m_hndl))->gdRect;
 110     return wxRect( screenrect.left, screenrect.top,
 111                    screenrect.right - screenrect.left, screenrect.bottom - screenrect.top);
 112 }
 113
 114 int wxDisplay::GetDepth() const
 115 {
 116     if (!(m_priv)) return 0;
 117     if (!(m_priv->m_hndl)) return 0;
 118
 119     // This cryptic looking code is based on Apple's sample code:
 120     // http://developer.apple.com/samplecode/Sample_Code/Graphics_2D/GDevVideo/Gen.cp.htm
 121
 122     //RN - according to the docs
 123         //gdPMap is a bitmap-type representation of the GDevice, and all
 124         //0x0000FFFF does is get the lower 16 bits of pixelSize.  However,
 125         //since pixelSize is only 16 bits (a short)...
 126     return ((*(*(m_priv->m_hndl))->gdPMap)->pixelSize) & 0x0000FFFF;
 127 }
 128
 129 wxString wxDisplay::GetName() const
 130 {
 131     // Macs don't name their displays...
 132     return wxEmptyString;
 133 }
 134
 135 struct DMModeIteratorRec
 136 {
 137         wxArrayVideoModes* pModes;
 138         const wxVideoMode* pMatchMode;
 139 };
 140
 141 pascal void DMModeListIteratorProc (    void* pData,
 142                               DMListIndexType nIndex,
 143                               DMDisplayModeListEntryPtr pInfo)
 144 {
 145     DMModeIteratorRec* pInfoData = (DMModeIteratorRec*) pData;
 146
 147         //Note that in testing the refresh rate is always 0 on my ibook - RN
 148     int refresh = (int) Fix2Long(pInfo->displayModeResolutionInfo->csRefreshRate);
 149
 150         for(unsigned long i = 0; i < pInfo->displayModeDepthBlockInfo->depthBlockCount; ++i)
 151         {
 152 #define pDBI pInfo->displayModeDepthBlockInfo->depthVPBlock[i].depthVPBlock
 153
 154                 if (wxVideoMode((int) pInfo->displayModeResolutionInfo->csHorizontalPixels,
 155                                   (int) pInfo->displayModeResolutionInfo->csVerticalLines,
 156                                   (int) pDBI->vpPixelSize,
 157                                   refresh).Matches(*pInfoData->pMatchMode) )
 158                         {
 159                         pInfoData->pModes->Add(wxVideoMode((int) pInfo->displayModeResolutionInfo->csHorizontalPixels,
 160                                                    (int) pInfo->displayModeResolutionInfo->csVerticalLines,
 161                                                    (int) pDBI->vpPixelSize,
 162                                                    refresh));
 163                         }
 164 #undef pDBI
 165         }
 166 }
 167
 168 struct DMModeInfoRec
 169 {
 170         const wxVideoMode* pMode;
 171         VDSwitchInfoRec sMode;
 172         bool bMatched;
 173 };
 174
 175 pascal void DMModeInfoProc (    void* pData,
 176                                                           DMListIndexType nIndex,
 177                                                           DMDisplayModeListEntryPtr pInfo)
 178 {
 179         DMModeInfoRec* pInfoData = (DMModeInfoRec*) pData;
 180         Fixed refresh = Long2Fix(pInfoData->pMode->refresh);
 181
 182         for(unsigned long i = 0; i < pInfo->displayModeDepthBlockInfo->depthBlockCount; ++i)
 183                 {
 184 #define pDBI pInfo->displayModeDepthBlockInfo->depthVPBlock[i].depthVPBlock
 185                     if (pInfoData->pMode->w == (int&) pInfo->displayModeResolutionInfo->csHorizontalPixels &&
 186                         pInfoData->pMode->h == (int&) pInfo->displayModeResolutionInfo->csVerticalLines &&
 187                         pInfoData->pMode->bpp == (int) pDBI->vpPixelSize &&
 188                         refresh == pInfo->displayModeResolutionInfo->csRefreshRate)
 189                         {
 190                                 memcpy(&pInfoData->sMode, pInfo->displayModeDepthBlockInfo->depthVPBlock[i].depthSwitchInfo,
 191                                        sizeof(VDSwitchInfoRec));
 192                                 pInfoData->sMode.csMode = pDBI->vpPixelSize;
 193                                 pInfoData->bMatched = true;
 194                                 break;
 195                         }
 196 #undef pDBI
 197                 }
 198 }
 199
 200 struct DMModeTransRec
 201 {
 202         wxVideoMode Mode;
 203         const VDSwitchInfoRec* psMode;
 204         bool bMatched;
 205 };
 206
 207 pascal void DMModeTransProc (   void* pData,
 208                                           DMListIndexType nIndex,
 209                                           DMDisplayModeListEntryPtr pInfo)
 210 {
 211         DMModeTransRec* pInfoData = (DMModeTransRec*) pData;
 212
 213         for(unsigned long i = 0; i < pInfo->displayModeDepthBlockInfo->depthBlockCount; ++i)
 214                 {
 215 #define pDBI pInfo->displayModeDepthBlockInfo->depthVPBlock[i].depthVPBlock
 216                 if (pInfoData->psMode->csData == pInfo->displayModeDepthBlockInfo->depthVPBlock[i].depthSwitchInfo->csData)
 217                         {
 218                         pInfoData->Mode = wxVideoMode((int) pInfo->displayModeResolutionInfo->csHorizontalPixels,
 219                                                                  (int) pInfo->displayModeResolutionInfo->csVerticalLines,
 220                                                                  (int) pDBI->vpPixelSize,
 221                                                                  (int) Fix2Long(pInfo->displayModeResolutionInfo->csRefreshRate) );
 222                         pInfoData->bMatched = true;
 223                         break;
 224                         }
 225 #undef pDBI
 226                 }
 227 }
 228
 229 wxArrayVideoModes
 230     wxDisplay::GetModes(const wxVideoMode& mode) const
 231 {
 232
 233     wxArrayVideoModes Modes;
 234
 235     unsigned long dwDMVer;
 236     Gestalt(gestaltDisplayMgrVers, (long*) &dwDMVer);
 237
 238     //Check DM version (for backward compatibility only - 7.5.3+ use 2.0)
 239     if (dwDMVer >= 0x020000) //version 2?
 240     {
 241
 242         DMListIndexType nNumModes;
 243         DMListType pModes;
 244         DMDisplayModeListIteratorUPP uppMLI;
 245         DisplayIDType nDisplayID;
 246
 247         wxASSERT(DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false) == noErr);
 248         //Create a new list...
 249         wxASSERT_MSG(DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes,                                                   &pModes) == noErr, wxT("Could not create a new display mode list") );
 250
 251         uppMLI = NewDMDisplayModeListIteratorUPP(DMModeListIteratorProc);
 252         wxASSERT(uppMLI);
 253
 254         DMModeIteratorRec sModeInfo;
 255         sModeInfo.pModes = &Modes;
 256         sModeInfo.pMatchMode = &mode;
 257         for (DMListIndexType i = 0; i < nNumModes; ++i)
 258         {
 259             wxASSERT(DMGetIndexedDisplayModeFromList(pModes, i, NULL,
 260                                               uppMLI, &sModeInfo) == noErr);
 261         }
 262         DisposeDMDisplayModeListIteratorUPP(uppMLI);
 263         wxASSERT(DMDisposeList(pModes) == noErr);
 264     }
 265     else //DM 1.0, 1.2, 1.x
 266     {
 267         wxLogSysError(wxString::Format(wxT("Display Manager Version %u Not Supported!  Present? %s"),
 268                                 (unsigned int) dwDMVer / 0x10000,
 269                                 (dwDMVer & (1 << gestaltDisplayMgrPresent) ? wxT("Yes") : wxT("No"))  )
 270                      );
 271     }
 272
 273     return Modes;
 274 }
 275
 276 wxVideoMode wxDisplay::GetCurrentMode() const
 277 {
 278     unsigned long dwDMVer;
 279     wxVideoMode RetMode;
 280
 281     Gestalt(gestaltDisplayMgrVers, (long*) &dwDMVer);
 282     //Check DM version (for backward compatibility only - 7.5.3+ use 2.0)
 283     if (dwDMVer >= 0x020000) //version 2?
 284     {
 285         VDSwitchInfoRec sMode; //Note - csMode member also contains the bit depth
 286         if (DMGetDisplayMode(m_priv->m_hndl, &sMode) == noErr)
 287         {
 288             DMListIndexType nNumModes;
 289             DMListType pModes;
 290                 DMDisplayModeListIteratorUPP uppMLI;
 291             DisplayIDType nDisplayID;
 292
 293             wxASSERT(DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false) == noErr);
 294             //Create a new list...
 295             wxASSERT_MSG(DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes, &pModes) == noErr,
 296                                   wxT("Could not create a new display mode list") );
 297
 298                 uppMLI = NewDMDisplayModeListIteratorUPP(DMModeTransProc);
 299                 wxASSERT(uppMLI);
 300
 301                 DMModeTransRec sModeInfo;
 302                 sModeInfo.bMatched = false;
 303                 sModeInfo.psMode = &sMode;
 304                 for (DMListIndexType i = 0; i < nNumModes; ++i)
 305                 {
 306                         wxASSERT(DMGetIndexedDisplayModeFromList(pModes, i, NULL,
 307                                                                                         uppMLI, &sModeInfo) == noErr);
 308
 309                         if ( sModeInfo.bMatched == true )
 310                         {
 311                                 RetMode = sModeInfo.Mode;
 312                                 break;
 313                         }
 314                 }
 315
 316             DisposeDMDisplayModeListIteratorUPP(uppMLI);
 317             wxASSERT(DMDisposeList(pModes) == noErr);
 318         }
 319         else //Can't get current mode?
 320         {
 321                 wxLogSysError(wxString::Format(wxT("Couldn't obtain current display mode!!!\ndwDMVer:%u"),
 322                                                                 (unsigned int) dwDMVer));
 323         }
 324     }
 325     else //DM ver 1
 326     {
 327         wxLogSysError(wxString::Format(wxT("Display Manager Version %u Not Supported!  Present? %s"),
 328                                 (unsigned int) dwDMVer / 0x10000,
 329                                 (dwDMVer & (1 << gestaltDisplayMgrPresent) ? wxT("Yes") : wxT("No")) )
 330                      );
 331     }
 332
 333     return RetMode;
 334 }
 335
 336 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 337 {
 338     unsigned long dwDMVer;
 339     Gestalt(gestaltDisplayMgrVers, (long*)&dwDMVer);
 340     if (GetCount() == 1 || dwDMVer >= 0x020000)
 341     {
 342                 if (mode == wxDefaultVideoMode)
 343                 {
 344 //#ifndef __DARWIN__
 345 //                      Handle hDisplayState;
 346 //                      if (DMBeginConfigureDisplays(&hDisplayState) != noErr)
 347 //                              {
 348 //                              wxLogSysError(wxT("Could not lock display for display mode changing!"));
 349 //                              return false;
 350 //                              }
 351 //                      wxASSERT( DMUseScreenPrefs(true, hDisplayState) == noErr);
 352 //                      DMEndConfigureDisplays(hDisplayState);
 353 //                      return true;
 354 //#else
 355                         //hmmmmm....
 356                         return true;
 357 //#endif
 358                 }
 359
 360         //0 & NULL for params 2 & 3 of DMSetVideoMode signal it to use defaults (current mode)
 361         //DM 2.0+ doesn't use params 2 & 3 of DMSetDisplayMode
 362         //so we have to use this icky structure
 363         VDSwitchInfoRec sMode;
 364         memset(&sMode, 0, sizeof(VDSwitchInfoRec) );
 365
 366         DMListIndexType nNumModes;
 367         DMListType pModes;
 368         DMDisplayModeListIteratorUPP uppMLI;
 369         DisplayIDType nDisplayID;
 370
 371         wxASSERT(DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false) == noErr);
 372         //Create a new list...
 373         wxASSERT_MSG(DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes, &pModes) == noErr,
 374                           wxT("Could not create a new display mode list") );
 375
 376         uppMLI = NewDMDisplayModeListIteratorUPP(DMModeInfoProc);
 377         wxASSERT(uppMLI);
 378
 379         DMModeInfoRec sModeInfo;
 380         sModeInfo.bMatched = false;
 381         sModeInfo.pMode = &mode;
 382         unsigned int i;
 383         for(i = 0; i < nNumModes; ++i)
 384         {
 385                 wxASSERT(DMGetIndexedDisplayModeFromList(pModes, i, NULL,
 386                                                                                    uppMLI, &sModeInfo) == noErr);
 387                 if (sModeInfo.bMatched == true)
 388                 {
 389                         sMode = sModeInfo.sMode;
 390                         break;
 391                 }
 392         }
 393         if(i == nNumModes)
 394                 return false;
 395
 396         DisposeDMDisplayModeListIteratorUPP(uppMLI);
 397         wxASSERT(DMDisposeList(pModes) == noErr);
 398
 399         // For the really paranoid -
 400         //          unsigned long flags;
 401         //      Boolean bok;
 402         //     wxASSERT(noErr == DMCheckDisplayMode(m_priv->m_hndl, sMode.csData,
 403         //                                                                sMode.csMode, &flags, NULL, &bok));
 404         //     wxASSERT(bok);
 405
 406         Handle hDisplayState;
 407         if (DMBeginConfigureDisplays(&hDisplayState) != noErr)
 408         {
 409             wxLogSysError(wxT("Could not lock display for display mode changing!"));
 410             return false;
 411         }
 412
 413         unsigned long dwBPP = (unsigned long) mode.bpp;
 414         if (DMSetDisplayMode(m_priv->m_hndl, sMode.csData,
 415                                             (unsigned long*) &(dwBPP), NULL
 416                                            //(unsigned long) &sMode
 417                                            , hDisplayState
 418                                            )  != noErr)
 419         {
 420                 DMEndConfigureDisplays(hDisplayState);
 421                 wxMessageBox(wxString::Format(wxT("Could not set the display mode")));
 422             return false;
 423         }
 424         DMEndConfigureDisplays(hDisplayState);
 425     }
 426     else  //DM 1.0, 1.2, 1.x
 427     {
 428         wxLogSysError(wxString::Format(wxT("Monitor gravitation not supported yet.  dwDMVer:%u"),
 429                                 (unsigned int) dwDMVer));
 430                 return false;
 431     }
 432
 433     return true;
 434 }
 435
 436 wxDisplay::~wxDisplay()
 437 {
 438     if ( m_priv )
 439     {
 440         delete m_priv;
 441         m_priv = 0;
 442     }
 443 }
 444
 445 #endif // wxUSE_DISPLAY