internal void MoveCurrentCaretPos ()
{
if (positionContext == null || ximStyle != styleOverTheSpot || client_window == IntPtr.Zero)
return;
int x = positionContext.X;
int y = positionContext.Y;
CaretStruct caret = positionContext.Caret;
IntPtr xic = GetXic (client_window);
if (xic == IntPtr.Zero)
return;
Control control = Control.FromHandle (client_window);
if (control == null || !control.IsHandleCreated)
return;
control = Control.FromHandle (caret.Hwnd);
if (control == null || !control.IsHandleCreated)
return;
Hwnd hwnd = Hwnd.ObjectFromHandle (client_window);
if (!hwnd.mapped)
return;
int dx, dy;
IntPtr child;
lock (XlibLock) {
XplatUIX11.XTranslateCoordinates (display, client_window, client_window, x, y, out dx, out dy, out child);
}
XPoint spot = new XPoint ();
spot.X = (short) dx;
spot.Y = (short) dy;
IntPtr pSL = IntPtr.Zero;
try {
pSL = Marshal.StringToHGlobalAnsi (XNames.XNSpotLocation);
IntPtr preedit = XVaCreateNestedList (0, pSL, spot, IntPtr.Zero);
XSetICValues (xic, XNames.XNPreeditAttributes, preedit, IntPtr.Zero);
} finally {
if (pSL != IntPtr.Zero)
Marshal.FreeHGlobal (pSL);
}
}
private static extern IntPtr XVaCreateNestedList (int dummy, IntPtr name0, XPoint value0, IntPtr name1, IntPtr value1, IntPtr terminator);
private IntPtr CreateOverTheSpotXic (IntPtr window, IntPtr xim)
{
IntPtr list;
int count;
Control c = Control.FromHandle (window);
string xlfd = String.Format ("-*-*-*-*-*-*-{0}-*-*-*-*-*-*-*", (int) c.Font.Size);
IntPtr fontSet = XCreateFontSet (display, xlfd, out list, out count, IntPtr.Zero);
XPoint spot = new XPoint ();
spot.X = 0;
spot.Y = 0;
IntPtr pSL = IntPtr.Zero, pFS = IntPtr.Zero;
try {
pSL = Marshal.StringToHGlobalAnsi (XNames.XNSpotLocation);
pFS = Marshal.StringToHGlobalAnsi (XNames.XNFontSet);
IntPtr preedit = XVaCreateNestedList (0,
pSL, spot,
pFS, fontSet,
IntPtr.Zero);
return XCreateIC (xim,
XNames.XNInputStyle, styleOverTheSpot,
XNames.XNClientWindow, window,
XNames.XNPreeditAttributes, preedit,
IntPtr.Zero);
} finally {
if (pSL != IntPtr.Zero)
Marshal.FreeHGlobal (pSL);
if (pFS != IntPtr.Zero)
Marshal.FreeHGlobal (pFS);
XFreeStringList (list);
//XplatUIX11.XFree (preedit);
//XFreeFontSet (fontSet);
}
}