src/mac/carbon/display.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        display.cpp
   3 // Purpose:     Mac implementation of wxDisplay class
   4 // Author:      Ryan Norton & Brian Victor
   5 // Modified by: Royce Mitchell III
   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         OSErr err;
 248
 249         err = DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false);
 250         wxASSERT(err == noErr);
 251
 252         //Create a new list...
 253         err = DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes, &pModes);
 254         wxASSERT_MSG(err == noErr, wxT("Could not create a new display mode list") );
 255
 256         uppMLI = NewDMDisplayModeListIteratorUPP(DMModeListIteratorProc);
 257         wxASSERT(uppMLI);
 258
 259         DMModeIteratorRec sModeInfo;
 260         sModeInfo.pModes = &Modes;
 261         sModeInfo.pMatchMode = &mode;
 262         for (DMListIndexType i = 0; i < nNumModes; ++i)
 263         {
 264             err = DMGetIndexedDisplayModeFromList(pModes, i, NULL, uppMLI, &sModeInfo);
 265             wxASSERT(err == noErr);
 266         }
 267         DisposeDMDisplayModeListIteratorUPP(uppMLI);
 268
 269         err = DMDisposeList(pModes);
 270         wxASSERT(err == noErr);
 271     }
 272     else //DM 1.0, 1.2, 1.x
 273     {
 274         wxLogSysError(wxString::Format(wxT("Display Manager Version %u Not Supported!  Present? %s"),
 275                                 (unsigned int) dwDMVer / 0x10000,
 276                                 (dwDMVer & (1 << gestaltDisplayMgrPresent) ? wxT("Yes") : wxT("No"))  )
 277                      );
 278     }
 279
 280     return Modes;
 281 }
 282
 283 wxVideoMode wxDisplay::GetCurrentMode() const
 284 {
 285     unsigned long dwDMVer;
 286     wxVideoMode RetMode;
 287
 288     Gestalt(gestaltDisplayMgrVers, (long*) &dwDMVer);
 289     //Check DM version (for backward compatibility only - 7.5.3+ use 2.0)
 290     if (dwDMVer >= 0x020000) //version 2?
 291     {
 292         VDSwitchInfoRec sMode; //Note - csMode member also contains the bit depth
 293         if (DMGetDisplayMode(m_priv->m_hndl, &sMode) == noErr)
 294         {
 295             DMListIndexType nNumModes;
 296             DMListType pModes;
 297                 DMDisplayModeListIteratorUPP uppMLI;
 298             DisplayIDType nDisplayID;
 299             OSErr err;
 300
 301             err = DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false);
 302             wxASSERT(err == noErr);
 303
 304             //Create a new list...
 305             err = DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes, &pModes);
 306             wxASSERT_MSG(err == noErr, wxT("Could not create a new display mode list") );
 307
 308                 uppMLI = NewDMDisplayModeListIteratorUPP(DMModeTransProc);
 309                 wxASSERT(uppMLI);
 310
 311                 DMModeTransRec sModeInfo;
 312                 sModeInfo.bMatched = false;
 313                 sModeInfo.psMode = &sMode;
 314                 for (DMListIndexType i = 0; i < nNumModes; ++i)
 315                 {
 316                 err = DMGetIndexedDisplayModeFromList(pModes, i, NULL, uppMLI, &sModeInfo);
 317                         wxASSERT(err == noErr);
 318
 319                         if ( sModeInfo.bMatched == true )
 320                         {
 321                                 RetMode = sModeInfo.Mode;
 322                                 break;
 323                         }
 324                 }
 325
 326             DisposeDMDisplayModeListIteratorUPP(uppMLI);
 327
 328             err = DMDisposeList(pModes);
 329             wxASSERT(err == noErr);
 330         }
 331         else //Can't get current mode?
 332         {
 333                 wxLogSysError(wxString::Format(wxT("Couldn't obtain current display mode!!!\ndwDMVer:%u"),
 334                                                                 (unsigned int) dwDMVer));
 335         }
 336     }
 337     else //DM ver 1
 338     {
 339         wxLogSysError(wxString::Format(wxT("Display Manager Version %u Not Supported!  Present? %s"),
 340                                 (unsigned int) dwDMVer / 0x10000,
 341                                 (dwDMVer & (1 << gestaltDisplayMgrPresent) ? wxT("Yes") : wxT("No")) )
 342                      );
 343     }
 344
 345     return RetMode;
 346 }
 347
 348 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 349 {
 350     unsigned long dwDMVer;
 351     Gestalt(gestaltDisplayMgrVers, (long*)&dwDMVer);
 352     if (GetCount() == 1 || dwDMVer >= 0x020000)
 353     {
 354                 if (mode == wxDefaultVideoMode)
 355                 {
 356 //#ifndef __DARWIN__
 357 //                      Handle hDisplayState;
 358 //                      if (DMBeginConfigureDisplays(&hDisplayState) != noErr)
 359 //                              {
 360 //                              wxLogSysError(wxT("Could not lock display for display mode changing!"));
 361 //                              return false;
 362 //                              }
 363 //                      wxASSERT( DMUseScreenPrefs(true, hDisplayState) == noErr);
 364 //                      DMEndConfigureDisplays(hDisplayState);
 365 //                      return true;
 366 //#else
 367                         //hmmmmm....
 368                         return true;
 369 //#endif
 370                 }
 371
 372         //0 & NULL for params 2 & 3 of DMSetVideoMode signal it to use defaults (current mode)
 373         //DM 2.0+ doesn't use params 2 & 3 of DMSetDisplayMode
 374         //so we have to use this icky structure
 375         VDSwitchInfoRec sMode;
 376         memset(&sMode, 0, sizeof(VDSwitchInfoRec) );
 377
 378         DMListIndexType nNumModes;
 379         DMListType pModes;
 380         DMDisplayModeListIteratorUPP uppMLI;
 381         DisplayIDType nDisplayID;
 382         OSErr err;
 383
 384         err = DMGetDisplayIDByGDevice(m_priv->m_hndl, &nDisplayID, false);
 385         wxASSERT(err == noErr);
 386
 387         //Create a new list...
 388         err = DMNewDisplayModeList(nDisplayID, NULL, NULL, &nNumModes, &pModes);
 389         wxASSERT_MSG(err == noErr, wxT("Could not create a new display mode list") );
 390
 391         uppMLI = NewDMDisplayModeListIteratorUPP(DMModeInfoProc);
 392         wxASSERT(uppMLI);
 393
 394         DMModeInfoRec sModeInfo;
 395         sModeInfo.bMatched = false;
 396         sModeInfo.pMode = &mode;
 397         unsigned int i;
 398         for(i = 0; i < nNumModes; ++i)
 399         {
 400             err = DMGetIndexedDisplayModeFromList(pModes, i, NULL, uppMLI, &sModeInfo);
 401                 wxASSERT(err == noErr);
 402
 403                 if (sModeInfo.bMatched == true)
 404                 {
 405                         sMode = sModeInfo.sMode;
 406                         break;
 407                 }
 408         }
 409         if(i == nNumModes)
 410                 return false;
 411
 412         DisposeDMDisplayModeListIteratorUPP(uppMLI);
 413
 414         err = DMDisposeList(pModes);
 415         wxASSERT(err == noErr);
 416
 417         // For the really paranoid -
 418         //          unsigned long flags;
 419         //      Boolean bok;
 420         //     wxASSERT(noErr == DMCheckDisplayMode(m_priv->m_hndl, sMode.csData,
 421         //                                                                sMode.csMode, &flags, NULL, &bok));
 422         //     wxASSERT(bok);
 423
 424         Handle hDisplayState;
 425         if (DMBeginConfigureDisplays(&hDisplayState) != noErr)
 426         {
 427             wxLogSysError(wxT("Could not lock display for display mode changing!"));
 428             return false;
 429         }
 430
 431         unsigned long dwBPP = (unsigned long) mode.bpp;
 432         if (DMSetDisplayMode(m_priv->m_hndl, sMode.csData,
 433                                             (unsigned long*) &(dwBPP), NULL
 434                                            //(unsigned long) &sMode
 435                                            , hDisplayState
 436                                            )  != noErr)
 437         {
 438                 DMEndConfigureDisplays(hDisplayState);
 439                 wxMessageBox(wxString::Format(wxT("Could not set the display mode")));
 440             return false;
 441         }
 442         DMEndConfigureDisplays(hDisplayState);
 443     }
 444     else  //DM 1.0, 1.2, 1.x
 445     {
 446         wxLogSysError(wxString::Format(wxT("Monitor gravitation not supported yet.  dwDMVer:%u"),
 447                                 (unsigned int) dwDMVer));
 448                 return false;
 449     }
 450
 451     return true;
 452 }
 453
 454 wxDisplay::~wxDisplay()
 455 {
 456     if ( m_priv )
 457     {
 458         delete m_priv;
 459         m_priv = 0;
 460     }
 461 }
 462
 463 #endif // wxUSE_DISPLAY