Implemented resolution changing using X11 video extentions\nBe sure to link with...

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24801 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/unix/displayx11.cpp b/src/unix/displayx11.cpp
index ae0a57d1399b662b2fa6cb30ab8bc661caaa43ec..15c2c468d8ce83bb24629f2ae1225b5305f1681b 100644 (file)
--- a/src/unix/displayx11.cpp
+++ b/src/unix/displayx11.cpp
@@ -21,6 +21,7 @@
 #endif
 
 #include "wx/display.h"
+#include "wx/log.h"
 
 #ifndef WX_PRECOMP
   #include "wx/dynarray.h"
@@ -37,13 +38,21 @@ extern "C" {
   #include <X11/Xlib.h>
   #include <X11/Xlibint.h>
   #include <X11/extensions/Xinerama.h>
+  #include <X11/extensions/xf86vmode.h>
 }
 
+//free private data common to x (usually s3) servers
+#define wxClearXVM(vm)  if(vm.privsize) XFree(vm.c_private)
 class wxDisplayUnixPriv
 {
   public:
     wxRect m_rect;
     int m_depth;
+    XF86VidModeModeInfo m_DefaultVidMode; 
+    ~wxDisplayUnixPriv()
+    {
+        wxClearXVM(m_DefaultVidMode);
+    }
 };
 
 size_t wxDisplayBase::GetCount()
@@ -103,6 +112,7 @@ int wxDisplayBase::GetFromPoint(const wxPoint &p)
 
     return -1;
   }
+  
 }
 
 wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ), m_priv( new wxDisplayUnixPriv )
@@ -125,6 +135,30 @@ wxDisplay::wxDisplay(size_t index) : wxDisplayBase ( index ), m_priv( new wxDisp
     m_priv->m_rect = wxRect(0, 0, size.GetWidth(), size.GetHeight());
     m_priv->m_depth = wxDisplayDepth();
   }
+
+
+  XF86VidModeModeLine VM;
+  int nDotClock;
+
+  XF86VidModeGetModeLine((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
+                         &nDotClock, &VM);
+
+  //A XF86VidModeModeLine is a XF86ModeModeInfo without the dotclock
+  //field.  It would be nice to mayby use a memcpy() here instead of
+  //all this?
+  m_priv->m_DefaultVidMode.dotclock = nDotClock;
+  m_priv->m_DefaultVidMode.hdisplay = VM.hdisplay;
+  m_priv->m_DefaultVidMode.hsyncstart = VM.hsyncstart;
+  m_priv->m_DefaultVidMode.hsyncend = VM.hsyncend;
+  m_priv->m_DefaultVidMode.htotal = VM.htotal;
+  m_priv->m_DefaultVidMode.hskew = VM.hskew;
+  m_priv->m_DefaultVidMode.vdisplay = VM.vdisplay;
+  m_priv->m_DefaultVidMode.vsyncstart = VM.vsyncstart;
+  m_priv->m_DefaultVidMode.vsyncend = VM.vsyncend;
+  m_priv->m_DefaultVidMode.vtotal = VM.vtotal;
+  m_priv->m_DefaultVidMode.flags = VM.flags;
+  m_priv->m_DefaultVidMode.privsize = VM.privsize;
+  m_priv->m_DefaultVidMode.c_private = VM.c_private;
 }
 
 wxDisplay::~wxDisplay()
@@ -147,23 +181,94 @@ wxString wxDisplay::GetName() const
   return wxEmptyString;
 }
 
- wxArrayVideoModes
-    wxDisplay::GetModes(const wxVideoMode& mode) const
+//
+//  See (http://www.xfree86.org/4.2.0/XF86VidModeDeleteModeLine.3.html) for more
+//  info about xf86 video mode extensions
+//
+
+#define wxCVM(v) wxVideoMode(v.hdisplay, v.vdisplay, v.dotclock /*BPP in X? */,((v.hsyncstart + v.vsyncstart) / 2) )
+#define wxCVM2(v) wxVideoMode(v.hdisplay, v.vdisplay, 0 /*BPP in X? */,((v.hsyncstart + v.vsyncstart) / 2) )
+
+wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 {
-    // Not implemented
-    return wxArrayVideoModes();
+    //Convenience...
+    Display* pDisplay = (Display*) wxGetDisplay(); //default display
+    int nScreen = DefaultScreen(pDisplay); //default screen of (default) display...
+
+    //Some variables..
+    XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
+    int nNumModes; //Number of modes enumerated....
+
+    wxArrayVideoModes Modes; //modes to return...
+
+    if (XF86VidModeGetAllModeLines(pDisplay, nScreen, &nNumModes, &ppXModes) == TRUE)
+    {
+        for (int i = 0; i < nNumModes; ++i)
+        {
+            if (mode == wxDefaultVideoMode || //According to display.h All modes valid if dafault mode...
+                mode.Matches(wxCVM2((*ppXModes[i]))) ) //...?
+            {
+                Modes.Add(wxCVM2((*ppXModes[i])));
+            }
+            wxClearXVM((*ppXModes[i]));
+        //  XFree(ppXModes[i]); //supposed to free?
+        }
+        XFree(ppXModes);
+    }
+    else //OOPS!
+    {
+        wxLogSysError("XF86VidModeGetAllModeLines Failed in wxX11Display::GetModes()!");
+    }
+
+    return Modes;
 }
 
 wxVideoMode wxDisplay::GetCurrentMode() const
 {
-    // Not implemented
-    return wxVideoMode();
+    return wxCVM2(m_priv->m_DefaultVidMode);
 }
 
 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 {
-    // Not implemented
-    return false;
+    if (mode == wxDefaultVideoMode)
+    {
+        return XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
+                             &m_priv->m_DefaultVidMode) == TRUE;
+    }
+    else //This gets kind of tricky AND complicated :) :\ :( :)
+    {
+        bool bRet = false;
+        //Some variables..
+        XF86VidModeModeInfo** ppXModes; //Enumerated Modes (Don't forget XFree() :))
+        int nNumModes; //Number of modes enumerated....
+
+        if(XF86VidModeGetAllModeLines((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()), &nNumModes, &ppXModes) == TRUE)
+        {
+            for (int i = 0; i < nNumModes; ++i)
+            {
+                if (!bRet &&
+                    ppXModes[i]->hdisplay == mode.w &&
+                    ppXModes[i]->vdisplay == mode.h &&
+                    ((ppXModes[i]->hsyncstart + ppXModes[i]->vsyncstart) / 2) == mode.refresh)
+                {
+                    //switch!
+                    bRet = XF86VidModeSwitchToMode((Display*)wxGetDisplay(), DefaultScreen((Display*)wxGetDisplay()),
+                             ppXModes[i]) == TRUE;
+                }
+                wxClearXVM((*ppXModes[i]));
+            //  XFree(ppXModes[i]); //supposed to free?
+            }
+            XFree(ppXModes);
+
+            return bRet;
+        }
+        else //OOPS!
+        {
+            wxLogSysError("XF86VidModeGetAllModeLines Failed in wxX11Display::ChangeMode()!");
+            return false;
+        }
+    }
 }
+
 #endif /* wxUSE_DISPLAY */