src/unix/displayx11.cpp

   1 ///////////////////////////////////////////////////////////////////////////
   2 // Name:        displayx11.cpp
   3 // Purpose:     Unix/X11 implementation of wxDisplay class
   4 // Author:      Brian Victor
   5 // Modified by:
   6 // Created:     12/05/02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16   #pragma hdrstop
  17 #endif
  18
  19 #include "wx/display.h"
  20 #include "wx/intl.h"
  21 #include "wx/log.h"
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/dynarray.h"
  25   #include "wx/gdicmn.h"
  26   #include "wx/string.h"
  27   #include "wx/utils.h"
  28 #endif /* WX_PRECOMP */
  29
  30 #if wxUSE_DISPLAY
  31
  32 /* These must be included after the wx files.  Otherwise the Data macro in
  33  * Xlibint.h conflicts with a function declaration in wx/list.h.  */
  34 extern "C" {
  35   #include <X11/Xlib.h>
  36 #ifndef __VMS
  37   #include <X11/Xlibint.h>
  38 # include <X11/extensions/Xinerama.h>
  39 #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
  40   #include <X11/extensions/xf86vmode.h>
  41 #endif
  42 #endif
  43 }
  44
  45 class wxDisplayUnixPriv
  46 {
  47   public:
  48     wxRect m_rect;
  49     int m_depth;
  50 };
  51
  52 size_t wxDisplayBase::GetCount()
  53 {
  54   Display *disp = (Display*)wxGetDisplay();
  55
  56 #ifndef __VMS
  57    if ( XineramaIsActive(disp) )
  58   {
  59     XineramaScreenInfo *screenarr;
  60     int numscreens;
  61     screenarr = XineramaQueryScreens(disp, &numscreens);
  62     XFree(screenarr);
  63     return numscreens;
  64   }
  65   else
  66 #endif
  67   {
  68     return 1;
  69   }
  70 }
  71
  72 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  73 {
  74   Display *disp = (Display*)wxGetDisplay();
  75
  76 #ifndef __VMS
  77    if ( XineramaIsActive(disp) )
  78   {
  79     int which_screen = -1;
  80     XineramaScreenInfo *screenarr;
  81     int numscreens;
  82     screenarr = XineramaQueryScreens(disp, &numscreens);
  83
  84     int i;
  85     for (i = 0; i < numscreens; ++i)
  86     {
  87       if (p.x >= screenarr[i].x_org &&
  88           p.x < screenarr[i].x_org + screenarr[i].width &&
  89           p.y >= screenarr[i].y_org &&
  90           p.y < screenarr[i].y_org + screenarr[i].height)
  91       {
  92         which_screen = i;
  93       }
  94     }
  95
  96     XFree(screenarr);
  97     return which_screen;
  98   }
  99   else
 100 #endif
 101      {
 102     wxSize size = wxGetDisplaySize();
 103     if (p.x >= 0 &&
 104         p.x < size.GetWidth() &&
 105         p.y >= 0 &&
 106         p.y < size.GetHeight())
 107     {
 108         return 0;
 109     }
 110
 111     return -1;
 112   }
 113 }
 114
 115 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ), m_priv( new wxDisplayUnixPriv )
 116 {
 117   Display *disp = (Display*)wxGetDisplay();
 118
 119 #ifndef __VMS
 120    if ( XineramaIsActive(disp) )
 121   {
 122     XineramaScreenInfo *screenarr;
 123     int numscreens;
 124     screenarr = XineramaQueryScreens(disp, &numscreens);
 125
 126     m_priv->m_rect = wxRect(screenarr[index].x_org, screenarr[index].y_org,
 127                             screenarr[index].width, screenarr[index].height);
 128     m_priv->m_depth = DefaultDepth(disp, DefaultScreen(disp));
 129     XFree(screenarr);
 130   }
 131   else
 132 #endif
 133      {
 134     wxSize size = wxGetDisplaySize();
 135     m_priv->m_rect = wxRect(0, 0, size.GetWidth(), size.GetHeight());
 136     m_priv->m_depth = wxDisplayDepth();
 137   }
 138 }
 139
 140 wxDisplay::~wxDisplay()
 141 {
 142   delete m_priv;
 143 }
 144
 145 wxRect wxDisplay::GetGeometry() const
 146 {
 147   return m_priv->m_rect;
 148 }
 149
 150 int wxDisplay::GetDepth() const
 151 {
 152   return m_priv->m_depth;
 153 }
 154
 155 wxString wxDisplay::GetName() const
 156 {
 157   return wxEmptyString;
 158 }
 159
 160
 161 #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
 162
 163 //
 164 //  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
 165 //  info about xf86 video mode extensions
 166 //
 167
 168 //free private data common to x (usually s3) servers
 169 #define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)
 170
 171 // Correct res rate from GLFW
 172 #define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
 173 #define wxCRR(v) wxCRR2(v,v.dotclock)
 174 #define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay())), wxCRR2(v,dc))
 175 #define wxCVM(v) wxCVM2(v, v.dotclock)
 176
 177 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 178 {
 179     //Convenience...
 180     Display* pDisplay = (Display*) wxGetDisplay(); //default display
 181     int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
 182
 183     //Some variables..
 184     XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 185     int nNumModes; //Number of modes enumerated....
 186
 187     wxArrayVideoModes Modes; //modes to return...
 188
 189     if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
 190     {
 191         for (int i = 0; i < nNumModes; ++i)
 192         {
 193             if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
 194                 mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
 195             {
 196                 Modes.Add(wxCVM((*ppXModes[i])));
 197             }
 198             wxClearXVM((*ppXModes[i]));
 199         //  XFree(ppXModes[i]); //supposed to free?
 200         }
 201         XFree(ppXModes);
 202     }
 203     else //OOPS!
 204     {
 205         wxLogSysError(_("Failed to enumerate video modes"));
 206     }
 207
 208     return Modes;
 209 }
 210
 211 wxVideoMode wxDisplay::GetCurrentMode() const
 212 {
 213   XF86VidModeModeLine VM;
 214   int nDotClock;
 215   XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 216                          &nDotClock, &VM);
 217   wxClearXVM(VM);
 218   return wxCVM2(VM, nDotClock);
 219 }
 220
 221 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 222 {
 223     XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 224     int nNumModes; //Number of modes enumerated....
 225
 226     if( !XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) )
 227     {
 228         wxLogSysError(_("Failed to change video mode"));
 229         return false;
 230     }
 231
 232     bool bRet = false;
 233     if (mode == wxDefaultVideoMode)
 234     {
 235         bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 236                      ppXModes[0]) == TRUE;
 237
 238         for (int i = 0; i < nNumModes; ++i)
 239         {
 240             wxClearXVM((*ppXModes[i]));
 241         //  XFree(ppXModes[i]); //supposed to free?
 242         }
 243     }
 244     else
 245     {
 246         for (int i = 0; i < nNumModes; ++i)
 247         {
 248             if (!bRet &&
 249                 ppXModes[i]->hdisplay == mode.w &&
 250                 ppXModes[i]->vdisplay == mode.h &&
 251                 wxCRR((*ppXModes[i])) == mode.refresh)
 252             {
 253                 //switch!
 254                 bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 255                          ppXModes[i]) == TRUE;
 256             }
 257             wxClearXVM((*ppXModes[i]));
 258         //  XFree(ppXModes[i]); //supposed to free?
 259         }
 260     }
 261
 262     XFree(ppXModes);
 263
 264     return bRet;
 265 }
 266
 267
 268 #else // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 269
 270 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 271 {
 272   Display *disp = (Display*)wxGetDisplay();
 273   int count_return;
 274   int* depths = XListDepths(disp, 0, &count_return);
 275   wxArrayVideoModes modes;
 276   if (depths)
 277   {
 278     int x;
 279     for (x = 0; x < count_return; ++x)
 280     {
 281       modes.Add(wxVideoMode(m_priv->m_rect.GetWidth(), m_priv->m_rect.GetHeight(), depths[x]));
 282     }
 283   }
 284   return modes;
 285 }
 286
 287 wxVideoMode wxDisplay::GetCurrentMode() const
 288 {
 289     // Not implemented
 290     return wxVideoMode();
 291 }
 292
 293 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 294 {
 295     // Not implemented
 296     return false;
 297 }
 298
 299 #endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 300
 301 #endif /* wxUSE_DISPLAY */