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