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