[Spice-devel] [PATCH spice-gtk] Disable mouse accelleration when grabbing the mouse (in server mode)

[Alon Levy]

On Wed, Dec 14, 2011 at 02:17:15PM +0100, Hans de Goede wrote:
> Otherwise accel will be applied twice, once by the client and then once
> more by the guest. Unfortunately there seems to be no gdk / gtk API for this
> so this patch uses direct libX11 calls.
> 

ACK.

> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
> ---
>  gtk/spice-widget.c |   33 +++++++++++++++++++++++++++++++++
>  1 files changed, 33 insertions(+), 0 deletions(-)
> 
> diff --git a/gtk/spice-widget.c b/gtk/spice-widget.c
> index d2d09af..5ed2e10 100644
> --- a/gtk/spice-widget.c
> +++ b/gtk/spice-widget.c
> @@ -25,6 +25,10 @@
>  #include <X11/XKBlib.h>
>  #include <gdk/gdkx.h>
>  #endif
> +#ifdef GDK_WINDOWING_X11
> +#include <X11/Xlib.h>
> +#include <gdk/gdkx.h>
> +#endif
>  #ifdef WIN32
>  #include <windows.h>
>  #include <gdk/gdkwin32.h>
> @@ -568,6 +572,21 @@ static GdkGrabStatus do_pointer_grab(SpiceDisplay *display)
>  #endif
>      gtk_grab_add(GTK_WIDGET(display));
>  
> +#ifdef GDK_WINDOWING_X11
> +    if (status == GDK_GRAB_SUCCESS) {
> +        int accel_numerator;
> +        int accel_denominator;
> +        int threshold;
> +        GdkWindow *w = GDK_WINDOW(gtk_widget_get_window(GTK_WIDGET(display)));
> +        Display *x_display = GDK_WINDOW_XDISPLAY(w);
> +    
> +        XGetPointerControl(x_display, &accel_numerator, &accel_denominator,
> +                           &threshold);
> +        XChangePointerControl(x_display, False, False, accel_numerator,
> +                              accel_denominator, threshold);
> +    }
> +#endif
> +
>      gdk_cursor_unref(blank);
>      return status;
>  }
> @@ -670,6 +689,20 @@ static void try_mouse_ungrab(SpiceDisplay *display)
>  #ifdef WIN32
>      ClipCursor(NULL);
>  #endif
> +#ifdef GDK_WINDOWING_X11
> +    {
> +        int accel_numerator;
> +        int accel_denominator;
> +        int threshold;
> +        GdkWindow *w = GDK_WINDOW(gtk_widget_get_window(GTK_WIDGET(display)));
> +        Display *x_display = GDK_WINDOW_XDISPLAY(w);
> +    
> +        XGetPointerControl(x_display, &accel_numerator, &accel_denominator,
> +                           &threshold);
> +        XChangePointerControl(x_display, True, True, accel_numerator,
> +                              accel_denominator, threshold);
> +    }
> +#endif
>  
>      d->mouse_grab_active = false;
>  
> -- 
> 1.7.7.4
> 
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