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/log.h"
  25
  26 #ifndef WX_PRECOMP
  27   #include "wx/dynarray.h"
  28   #include "wx/gdicmn.h"
  29   #include "wx/string.h"
  30   #include "wx/utils.h"
  31 #endif /* WX_PRECOMP */
  32
  33 #if wxUSE_DISPLAY
  34
  35 /* These must be included after the wx files.  Otherwise the Data macro in
  36  * Xlibint.h conflicts with a function declaration in wx/list.h.  */
  37 extern "C" {
  38   #include <X11/Xlib.h>
  39   #include <X11/Xlibint.h>
  40   #include <X11/extensions/Xinerama.h>
  41   #include <X11/extensions/xf86vmode.h>
  42 }
  43
  44 class wxDisplayUnixPriv
  45 {
  46   public:
  47     wxRect m_rect;
  48     int m_depth;
  49 };
  50
  51 size_t wxDisplayBase::GetCount()
  52 {
  53   Display *disp = (Display*)wxGetDisplay();
  54
  55   if ( XineramaIsActive(disp) )
  56   {
  57     XineramaScreenInfo *screenarr;
  58     int numscreens;
  59     screenarr = XineramaQueryScreens(disp, &numscreens);
  60     XFree(screenarr);
  61     return numscreens;
  62   }
  63   else
  64   {
  65     return 1;
  66   }
  67 }
  68
  69 int wxDisplayBase::GetFromPoint(const wxPoint &p)
  70 {
  71   Display *disp = (Display*)wxGetDisplay();
  72
  73   if ( XineramaIsActive(disp) )
  74   {
  75     int which_screen = -1;
  76     XineramaScreenInfo *screenarr;
  77     int numscreens;
  78     screenarr = XineramaQueryScreens(disp, &numscreens);
  79
  80     int i;
  81     for (i = 0; i < numscreens; ++i)
  82     {
  83       if (p.x >= screenarr[i].x_org &&
  84           p.x < screenarr[i].x_org + screenarr[i].width &&
  85           p.y >= screenarr[i].y_org &&
  86           p.y < screenarr[i].y_org + screenarr[i].height)
  87       {
  88         which_screen = i;
  89       }
  90     }
  91
  92     XFree(screenarr);
  93     return which_screen;
  94   }
  95   else
  96   {
  97     wxSize size = wxGetDisplaySize();
  98     if (p.x >= 0 &&
  99         p.x < size.GetWidth() &&
 100         p.y >= 0 &&
 101         p.y < size.GetHeight())
 102     {
 103         return 0;
 104     }
 105
 106     return -1;
 107   }
 108 }
 109
 110 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ), m_priv( new wxDisplayUnixPriv )
 111 {
 112   Display *disp = (Display*)wxGetDisplay();
 113
 114   if ( XineramaIsActive(disp) )
 115   {
 116     XineramaScreenInfo *screenarr;
 117     int numscreens;
 118     screenarr = XineramaQueryScreens(disp, &numscreens);
 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 //  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
 154 //  info about xf86 video mode extensions
 155 //
 156
 157 //free private data common to x (usually s3) servers
 158 #define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)
 159
 160 //Correct res rate from GLFW, which probably has the perfect license :)
 161 #define wxCRR2(v,dc) (int) (((1000.0f * (float) dc) /*PIXELS PER SECOND */) / ((float) v.htotal * v.vtotal /*PIXELS PER FRAME*/) + 0.5f)
 162 #define wxCRR(v) wxCRR2(v,v.dotclock)
 163 #define wxCVM2(v, dc) wxVideoMode(v.hdisplay, v.vdisplay, DefaultDepth((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay())), wxCRR2(v,dc))
 164 #define wxCVM(v) wxCVM2(v, v.dotclock)
 165
 166 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 167 {
 168     //Convenience...
 169     Display* pDisplay = (Display*) wxGetDisplay(); //default display
 170     int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
 171
 172     //Some variables..
 173     XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 174     int nNumModes; //Number of modes enumerated....
 175
 176     wxArrayVideoModes Modes; //modes to return...
 177
 178     if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
 179     {
 180         for (int i = 0; i < nNumModes; ++i)
 181         {
 182             if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
 183                 mode.Matches(wxCVM((*ppXModes[i]))) ) //...?
 184             {
 185                 Modes.Add(wxCVM((*ppXModes[i])));
 186             }
 187             wxClearXVM((*ppXModes[i]));
 188         //  XFree(ppXModes[i]); //supposed to free?
 189         }
 190         XFree(ppXModes);
 191     }
 192     else //OOPS!
 193     {
 194         wxLogSysError("XF86VidModeGetAllModeLines Failed in wxX11Display::GetModes()!");
 195     }
 196
 197     return Modes;
 198 }
 199
 200 wxVideoMode wxDisplay::GetCurrentMode() const
 201 {
 202   XF86VidModeModeLine VM;
 203   int nDotClock;
 204   XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 205                          &nDotClock, &VM);
 206   wxClearXVM(VM);
 207   return wxCVM2(VM, nDotClock);
 208 }
 209
 210 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 211 {
 212     //This gets kind of tricky AND complicated :) :\ :( :)
 213     {
 214         bool bRet = false;
 215         //Some variables..
 216         XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
 217         int nNumModes; //Number of modes enumerated....
 218
 219         if(XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) == TRUE)
 220         {
 221             if (mode == wxDefaultVideoMode)
 222             {
 223                 bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 224                              ppXModes[0]) == TRUE;
 225
 226                 for (int i = 0; i < nNumModes; ++i)
 227                 {
 228                     wxClearXVM((*ppXModes[i]));
 229                 //  XFree(ppXModes[i]); //supposed to free?
 230                 }
 231                 XFree(ppXModes);
 232
 233                 return bRet;
 234             }
 235             for (int i = 0; i < nNumModes; ++i)
 236             {
 237                 if (!bRet &&
 238                     ppXModes[i]->hdisplay == mode.w &&
 239                     ppXModes[i]->vdisplay == mode.h &&
 240                     wxCRR((*ppXModes[i])) == mode.refresh)
 241                 {
 242                     //switch!
 243                     bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
 244                              ppXModes[i]) == TRUE;
 245                 }
 246                 wxClearXVM((*ppXModes[i]));
 247             //  XFree(ppXModes[i]); //supposed to free?
 248             }
 249             XFree(ppXModes);
 250
 251             return bRet;
 252         }
 253         else //OOPS!
 254         {
 255             wxLogSysError("XF86VidModeGetAllModeLines Failed in wxX11Display::ChangeMode()!");
 256             return false;
 257         }
 258     }
 259     /*
 260     //Brian Victor's patch (X11 can't change bit depth yet), here for reference
 261   Display *disp = (Display*)wxGetDisplay();
 262   int count_return;
 263   int* depths = XListDepths(disp, 0, &count_return);
 264   wxArrayVideoModes modes;
 265   if (depths)
 266   {
 267     int x;
 268     for (x = 0; x < count_return; ++x)
 269     {
 270       modes.Add(wxVideoMode(m_priv->m_rect.GetWidth(), m_priv->m_rect.GetHeight(), depths[x]));
 271     }
 272   }
 273   return modes;
 274     */
 275 }
 276
 277 #endif /* wxUSE_DISPLAY */
 278