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     m_priv->m_rect = wxRect(screenarr[index].x_org, screenarr[index].y_org,
 123                             screenarr[index].width, screenarr[index].height);
 124     m_priv->m_depth = DefaultDepth(disp, DefaultScreen(disp));
 125     XFree(screenarr);
 126   }
 127   else
 128   {
 129     wxSize size = wxGetDisplaySize();
 130     m_priv->m_rect = wxRect(0, 0, size.GetWidth(), size.GetHeight());
 131     m_priv->m_depth = wxDisplayDepth();
 132   }
 133 }
 134
 135 wxDisplay::~wxDisplay()
 136 {
 137   delete m_priv;
 138 }
 139
 140 wxRect wxDisplay::GetGeometry() const
 141 {
 142   return m_priv->m_rect;
 143 }
 144
 145 int wxDisplay::GetDepth() const
 146 {
 147   return m_priv->m_depth;
 148 }
 149
 150 wxString wxDisplay::GetName() const
 151 {
 152   return wxEmptyString;
 153 }
 154
 155
 156 #ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
 157
 158 //
 159 //  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
 160 //  info about xf86 video mode extensions
 161 //
 162
 163 //free private data common to x (usually s3) servers
 164 #define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)
 165
 166 //Correct res rate from GLFW, which probably has the perfect license :)
 167 #define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
 168 #define wxCRR(v) wxCRR2(v,v.dotclock)
 169 #define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay())), wxCRR2(v,dc))
 170 #define wxCVM(v) wxCVM2(v, v.dotclock)
 171
 172 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 173 {
 174     //Convenience...
 175     Display* pDisplay = (Display*) wxGetDisplay(); //default display
 176     int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
 177
 178     //Some variables..
 179     XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 180     int nNumModes; //Number of modes enumerated....
 181
 182     wxArrayVideoModes Modes; //modes to return...
 183
 184     if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
 185     {
 186         for (int i = 0; i < nNumModes; ++i)
 187         {
 188             if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
 189                 mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
 190             {
 191                 Modes.Add(wxCVM((*ppXModes[i])));
 192             }
 193             wxClearXVM((*ppXModes[i]));
 194         //  XFree(ppXModes[i]); //supposed to free?
 195         }
 196         XFree(ppXModes);
 197     }
 198     else //OOPS!
 199     {
 200         wxLogSysError(_("Failed to enumerate video modes"));
 201     }
 202
 203     return Modes;
 204 }
 205
 206 wxVideoMode wxDisplay::GetCurrentMode() const
 207 {
 208   XF86VidModeModeLine VM;
 209   int nDotClock;
 210   XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 211                          &nDotClock, &VM);
 212   wxClearXVM(VM);
 213   return wxCVM2(VM, nDotClock);
 214 }
 215
 216 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 217 {
 218     //This gets kind of tricky AND complicated :) :\ :( :)
 219     {
 220         bool bRet = false;
 221         //Some variables..
 222         XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 223         int nNumModes; //Number of modes enumerated....
 224
 225         if(XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) == TRUE)
 226         {
 227             if (mode == wxDefaultVideoMode)
 228             {
 229                 bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 230                              ppXModes[0]) == TRUE;
 231
 232                 for (int i = 0; i < nNumModes; ++i)
 233                 {
 234                     wxClearXVM((*ppXModes[i]));
 235                 //  XFree(ppXModes[i]); //supposed to free?
 236                 }
 237                 XFree(ppXModes);
 238
 239                 return bRet;
 240             }
 241             for (int i = 0; i < nNumModes; ++i)
 242             {
 243                 if (!bRet &&
 244                     ppXModes[i]->hdisplay == mode.w &&
 245                     ppXModes[i]->vdisplay == mode.h &&
 246                     wxCRR((*ppXModes[i])) == mode.refresh)
 247                 {
 248                     //switch!
 249                     bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 250                              ppXModes[i]) == TRUE;
 251                 }
 252                 wxClearXVM((*ppXModes[i]));
 253             //  XFree(ppXModes[i]); //supposed to free?
 254             }
 255             XFree(ppXModes);
 256
 257             return bRet;
 258         }
 259         else //OOPS!
 260         {
 261             wxLogSysError(_("Failed to change video mode"));
 262             return false;
 263         }
 264     }
 265     /*
 266     //Brian Victor's patch (X11 can't change bit depth yet), here for reference
 267   Display *disp = (Display*)wxGetDisplay();
 268   int count_return;
 269   int* depths = XListDepths(disp, 0, &count_return);
 270   wxArrayVideoModes modes;
 271   if (depths)
 272   {
 273     int x;
 274     for (x = 0; x < count_return; ++x)
 275     {
 276       modes.Add(wxVideoMode(m_priv->m_rect.GetWidth(), m_priv->m_rect.GetHeight(), depths[x]));
 277     }
 278   }
 279   return modes;
 280     */
 281 }
 282
 283
 284 #else // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 285
 286 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 287 {
 288     // Not implemented
 289     return wxArrayVideoModes();
 290 }
 291
 292 wxVideoMode wxDisplay::GetCurrentMode() const
 293 {
 294     // Not implemented
 295     return wxVideoMode();
 296 }
 297
 298 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 299 {
 300     // Not implemented
 301     return false;
 302 }
 303
 304 #endif // !HAVE_X11_EXTENSIONS_XF86VMODE_H
 305
 306 #endif /* wxUSE_DISPLAY */