Merge pull request #943 from ermshiperete/bug-novell-325669

[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / XplatUIX11.cs

diff --git a/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs b/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs
index 2f3b9d85461287a98718c52431037c72e7d6c0f0..c25124033921bcc71ee367c0f780916bdca36f83 100644 (file)
--- a/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs
+++ b/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs
@@ -2594,6 +2594,28 @@ namespace System.Windows.Forms {
                        }
                }
 
+               internal override Screen[] AllScreens {
+                       get {
+                               if (!XineramaIsActive (DisplayHandle))
+                                       return null;
+                               int nScreens;
+                               IntPtr xineramaScreens = XineramaQueryScreens (DisplayHandle, out nScreens);
+                               var screens = new Screen [nScreens];
+                               IntPtr current = xineramaScreens;
+                               for (int i = 0; i < nScreens; i++) {
+                                       var screen = (XineramaScreenInfo)Marshal.PtrToStructure (current,
+                                               typeof (XineramaScreenInfo));
+                                       var screenRect = new Rectangle (screen.x_org, screen.y_org, screen.width,
+                                               screen.height);
+                                       var name = string.Format ("Display {0}", screen.screen_number);
+                                       screens [i] = new Screen (i == 0, name, screenRect, screenRect);
+                                       current = (IntPtr)( (ulong)current + (ulong)Marshal.SizeOf(typeof (XineramaScreenInfo)));
+                               }
+                               XFree (xineramaScreens);
+                               return screens;
+                       }
+               }
+
                internal override bool ThemesEnabled {
                        get {
                                return XplatUIX11.themes_enabled;
@@ -7236,6 +7258,34 @@ namespace System.Windows.Forms {
                }
 #endregion
 
+#region Xinerama imports
+               [DllImport ("libXinerama", EntryPoint="XineramaQueryScreens")]
+               extern static IntPtr _XineramaQueryScreens (IntPtr display, out int number);
+               internal static IntPtr XineramaQueryScreens (IntPtr display, out int number)
+               {
+                       DebugHelper.TraceWriteLine ("XineramaQueryScreens");
+                       return _XineramaQueryScreens (display, out number);
+               }
+
+               [DllImport ("libXinerama", EntryPoint="XineramaIsActive")]
+               extern static bool _XineramaIsActive (IntPtr display);
+               static bool XineramaNotInstalled;
+
+               internal static bool XineramaIsActive (IntPtr display)
+               {
+                       DebugHelper.TraceWriteLine ("XineramaIsActive");
+
+                       if (XineramaNotInstalled)
+                               return false;
+                       try {
+                               return _XineramaIsActive (display);
+                       } catch (DllNotFoundException) {
+                               // Xinerama isn't installed
+                               XineramaNotInstalled = true;
+                               return false;
+                       }
+               }
+#endregion
 
 #else //no TRACE defined
 
@@ -7606,6 +7656,29 @@ namespace System.Windows.Forms {
                internal extern static void gtk_clipboard_set_text (IntPtr clipboard, string text, int len);
 #endregion
 
+
+#region Xinerama imports
+               [DllImport ("libXinerama")]
+               internal extern static IntPtr XineramaQueryScreens (IntPtr display, out int number);
+
+               [DllImport ("libXinerama", EntryPoint = "XineramaIsActive")]
+               extern static bool _XineramaIsActive (IntPtr display);
+               static bool XineramaNotInstalled;
+
+               internal static bool XineramaIsActive (IntPtr display)
+               {
+                       if (XineramaNotInstalled)
+                               return false;
+                       try {
+                               return _XineramaIsActive (display);
+                       } catch (DllNotFoundException) {
+                               // Xinerama isn't installed
+                               XineramaNotInstalled = true;
+                               return false;
+                       }
+               }
+#endregion
+
 #endif
        }
 }