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) wxWindows team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 #include "wx/display.h"
  24 #include "wx/intl.h"
  25 #include "wx/log.h"
  26
  27 #ifndef WX_PRECOMP
  28   #include "wx/dynarray.h"
  29   #include "wx/gdicmn.h"
  30   #include "wx/string.h"
  31   #include "wx/utils.h"
  32 #endif /* WX_PRECOMP */
  33
  34 #if wxUSE_DISPLAY
  35
  36 /* These must be included after the wx files.  Otherwise the Data macro in
  37  * Xlibint.h conflicts with a function declaration in wx/list.h.  */
  38 extern "C" {
  39   #include <X11/Xlib.h>
  40   #include <X11/Xlibint.h>
  41   #include <X11/extensions/Xinerama.h>
  42 #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
  43   #include <X11/extensions/xf86vmode.h>
  44 #endif
  45 }
  46
  47 class wxDisplayUnixPriv
  48 {
  49   public:
  50     wxRect m_rect;
  51     int m_depth;
  52 };
  53
  54 size_t wxDisplayBase::GetCount()
  55 {
  56   Display *disp = (Display*)wxGetDisplay();
  57
  58   if ( XineramaIsActive(disp) )
  59   {
  60     XineramaScreenInfo *screenarr;
  61     int numscreens;
  62     screenarr = XineramaQueryScreens(disp, &numscreens);
  63     XFree(screenarr);
  64     return numscreens;
  65   }
  66   else
  67   {
  68     return 1;
  69   }
  70 }
  71
  72 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  73 {
  74   Display *disp = (Display*)wxGetDisplay();
  75
  76   if ( XineramaIsActive(disp) )
  77   {
  78     int which_screen = -1;
  79     XineramaScreenInfo *screenarr;
  80     int numscreens;
  81     screenarr = XineramaQueryScreens(disp, &numscreens);
  82
  83     int i;
  84     for (i = 0; i < numscreens; ++i)
  85     {
  86       if (p.x >= screenarr[i].x_org &&
  87           p.x < screenarr[i].x_org + screenarr[i].width &&
  88           p.y >= screenarr[i].y_org &&
  89           p.y < screenarr[i].y_org + screenarr[i].height)
  90       {
  91         which_screen = i;
  92       }
  93     }
  94
  95     XFree(screenarr);
  96     return which_screen;
  97   }
  98   else
  99   {
 100     wxSize size = wxGetDisplaySize();
 101     if (p.x >= 0 &&
 102         p.x < size.GetWidth() &&
 103         p.y >= 0 &&
 104         p.y < size.GetHeight())
 105     {
 106         return 0;
 107     }
 108
 109     return -1;
 110   }
 111 }
 112
 113 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ), m_priv( new wxDisplayUnixPriv )
 114 {
 115   Display *disp = (Display*)wxGetDisplay();
 116
 117   if ( XineramaIsActive(disp) )
 118   {
 119     XineramaScreenInfo *screenarr;
 120     int numscreens;
 121     screenarr = XineramaQueryScreens(disp, &numscreens);
 122
 123     //Make sure index is a valid display number...
 124     wxASSERT(index < 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   {
 133     wxSize size = wxGetDisplaySize();
 134     m_priv->m_rect = wxRect(0, 0, size.GetWidth(), size.GetHeight());
 135     m_priv->m_depth = wxDisplayDepth();
 136   }
 137 }
 138
 139 wxDisplay::~wxDisplay()
 140 {
 141   delete m_priv;
 142 }
 143
 144 wxRect wxDisplay::GetGeometry() const
 145 {
 146   return m_priv->m_rect;
 147 }
 148
 149 int wxDisplay::GetDepth() const
 150 {
 151   return m_priv->m_depth;
 152 }
 153
 154 wxString wxDisplay::GetName() const
 155 {
 156   return wxEmptyString;
 157 }
 158
 159
 160 #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
 161
 162 //
 163 //  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
 164 //  info about xf86 video mode extensions
 165 //
 166
 167 //free private data common to x (usually s3) servers
 168 #define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)
 169
 170 //Correct res rate from GLFW, which probably has the perfect license :)
 171 #define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
 172 #define wxCRR(v) wxCRR2(v,v.dotclock)
 173 #define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay())), wxCRR2(v,dc))
 174 #define wxCVM(v) wxCVM2(v, v.dotclock)
 175
 176 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 177 {
 178     //Convenience...
 179     Display* pDisplay = (Display*) wxGetDisplay(); //default display
 180     int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
 181
 182     //Some variables..
 183     XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 184     int nNumModes; //Number of modes enumerated....
 185
 186     wxArrayVideoModes Modes; //modes to return...
 187
 188     if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
 189     {
 190         for (int i = 0; i < nNumModes; ++i)
 191         {
 192             if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
 193                 mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
 194             {
 195                 Modes.Add(wxCVM((*ppXModes[i])));
 196             }
 197             wxClearXVM((*ppXModes[i]));
 198         //  XFree(ppXModes[i]); //supposed to free?
 199         }
 200         XFree(ppXModes);
 201     }
 202     else //OOPS!
 203     {
 204         wxLogSysError(_("Failed to enumerate video modes"));
 205     }
 206
 207     return Modes;
 208 }
 209
 210 wxVideoMode wxDisplay::GetCurrentMode() const
 211 {
 212   XF86VidModeModeLine VM;
 213   int nDotClock;
 214   XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 215                          &nDotClock, &VM);
 216   wxClearXVM(VM);
 217   return wxCVM2(VM, nDotClock);
 218 }
 219
 220 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 221 {
 222     //This gets kind of tricky AND complicated :) :\ :( :)
 223     {
 224         bool bRet = false;
 225         //Some variables..
 226         XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 227         int nNumModes; //Number of modes enumerated....
 228
 229         if(XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) == TRUE)
 230         {
 231             if (mode == wxDefaultVideoMode)
 232             {
 233                 bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 234                              ppXModes[0]) == TRUE;
 235
 236                 for (int i = 0; i < nNumModes; ++i)
 237                 {
 238                     wxClearXVM((*ppXModes[i]));
 239                 //  XFree(ppXModes[i]); //supposed to free?
 240                 }
 241                 XFree(ppXModes);
 242
 243                 return bRet;
 244             }
 245             for (int i = 0; i < nNumModes; ++i)
 246             {
 247                 if (!bRet &&
 248                     ppXModes[i]->hdisplay == mode.w &&
 249                     ppXModes[i]->vdisplay == mode.h &&
 250                     wxCRR((*ppXModes[i])) == mode.refresh)
 251                 {
 252                     //switch!
 253                     bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 254                              ppXModes[i]) == TRUE;
 255                 }
 256                 wxClearXVM((*ppXModes[i]));
 257             //  XFree(ppXModes[i]); //supposed to free?
 258             }
 259             XFree(ppXModes);
 260
 261             return bRet;
 262         }
 263         else //OOPS!
 264         {
 265             wxLogSysError(_("Failed to change video mode"));
 266             return false;
 267         }
 268     }
 269 }
 270
 271
 272 #else // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 273
 274 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 275 {
 276   Display *disp = (Display*)wxGetDisplay();
 277   int count_return;
 278   int* depths = XListDepths(disp, 0, &count_return);
 279   wxArrayVideoModes modes;
 280   if (depths)
 281   {
 282     int x;
 283     for (x = 0; x < count_return; ++x)
 284     {
 285       modes.Add(wxVideoMode(m_priv->m_rect.GetWidth(), m_priv->m_rect.GetHeight(), depths[x]));
 286     }
 287   }
 288   return modes;
 289 }
 290
 291 wxVideoMode wxDisplay::GetCurrentMode() const
 292 {
 293     // Not implemented
 294     return wxVideoMode();
 295 }
 296
 297 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 298 {
 299     // Not implemented
 300     return false;
 301 }
 302
 303 #endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 304
 305 #endif /* wxUSE_DISPLAY */