Initial commit

libsst-wm/Xlib/XI2Private.c

@@ -0,0 +1,83 @@
+
+#ifdef HAVE_XINPUT2
+#include <dlfcn.h>
+#include "XlibPrivate.h"
+#include "XI2Private.h"
+
+XI2Functions XI = { 0 };
+
+void XI2_Load()
+{
+	const int flags = RTLD_LAZY | RTLD_GLOBAL;
+	void* XI2lib;
+
+	/* Try opening the correct SONAME version of libXi */
+	XI2lib = dlopen("libXi.so.6", flags);
+
+	/* Didn't work? */
+	if(XI2lib == NULL)
+	{
+		/* Try a super-generic version */
+		XI2lib = dlopen("libXi.so", flags);
+		if(XI2lib == NULL)
+			return;
+
+	}
+	
+	/* Resolve symbols */
+	XI.SelectEvents = dlsym(XI2lib, "XISelectEvents");
+	XI.QueryVersion = dlsym(XI2lib, "XIQueryVersion");
+	
+	if(XI.SelectEvents == NULL || XI.QueryVersion == NULL)
+	{
+		dlclose(XI2lib);
+		return;
+	}	
+
+
+	/* Save handle */
+    XI.XI2lib = XI2lib;
+    return;
+}
+
+/******************************************************************************/
+
+void XI2_Unload()
+{
+    if(XI.XI2lib != NULL)
+        dlclose(XI.XI2lib);
+}
+
+/******************************************************************************/
+
+int XI2_IsLoaded()
+{
+	return (XI.XI2lib != NULL);
+}
+
+/******************************************************************************/
+
+void XI2_IsSupportedOnConnection(SST_DisplayTarget_Xlib* displayTarget)
+{
+    int major = 2, minor = 0;
+    int dummyEvent, dummyError;
+        
+    /* Default to NO */
+    displayTarget->xi2Support = 0;
+    displayTarget->xi2opcode = ~0;
+        
+    /* Check if server has XI at all. */
+    if(X.QueryExtension(displayTarget->display, "XInputExtension", &displayTarget->xi2opcode, &dummyEvent, &dummyError))
+    {
+        /* OK, does it support XI2? */
+		XI.QueryVersion(displayTarget->display, &major, &minor);
+   
+        /* If the version is at least 2.0, we're good */
+        if(major * 100 + minor >= 200) {
+			displayTarget->xi2Support = 1;
+		}
+
+    }
+}
+
+#endif