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