add keyboard grab.

1 files changed, 58 insertions, 0 deletions

diff --git a/gtk/spice-widget.c b/gtk/spice-widget.c
index 103bcc1..30e7919 100644
--- a/gtk/spice-widget.c
+++ b/gtk/spice-widget.c
@@ -29,6 +29,11 @@ struct spice_display {
     SpiceChannel            *inputs;
 
     enum SpiceMouseMode     mouse_mode;
+    int                     mouse_have_pointer;
+
+    int                     keyboard_grab_enable;
+    int                     keyboard_grab_active;
+    int                     keyboard_have_focus;
 
     const guint16 const     *keycode_map;
     size_t                  keycode_maplen;
@@ -111,6 +116,39 @@ static void spice_display_init(SpiceDisplay *display)
     gtk_widget_set_can_focus(widget, true);
 
     d->keycode_map = vnc_display_keymap_gdk2xtkbd_table(&d->keycode_maplen);
+
+    d->keyboard_grab_enable = true;
+}
+
+static void try_keyboard_grab(GtkWidget *widget)
+{
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
+    if (!d->keyboard_grab_enable)
+        return;
+    if (!d->keyboard_have_focus)
+        return;
+    if (!d->mouse_have_pointer)
+        return;
+
+    fprintf(stderr, "grab keyboard\n");
+    gdk_keyboard_grab(gtk_widget_get_window(widget), FALSE,
+                      GDK_CURRENT_TIME);
+    d->keyboard_grab_active = true;
+}
+
+
+static void try_keyboard_ungrab(GtkWidget *widget)
+{
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
+    if (!d->keyboard_grab_active)
+        return;
+
+    fprintf(stderr, "ungrab keyboard\n");
+    gdk_keyboard_ungrab(GDK_CURRENT_TIME);
 }
 
 static void recalc_geometry(GtkWidget *widget)
@@ -296,25 +334,45 @@ static gboolean key_event(GtkWidget *widget, GdkEventKey *key)
 
 static gboolean enter_event(GtkWidget *widget, GdkEventCrossing *crossing G_GNUC_UNUSED)
 {
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
     fprintf(stderr, "%s\n", __FUNCTION__);
+    d->mouse_have_pointer = true;
+    try_keyboard_grab(widget);
     return true;
 }
 
 static gboolean leave_event(GtkWidget *widget, GdkEventCrossing *crossing G_GNUC_UNUSED)
 {
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
     fprintf(stderr, "%s\n", __FUNCTION__);
+    d->mouse_have_pointer = false;
+    try_keyboard_ungrab(widget);
     return true;
 }
 
 static gboolean focus_in_event(GtkWidget *widget, GdkEventFocus *focus G_GNUC_UNUSED)
 {
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
     fprintf(stderr, "%s\n", __FUNCTION__);
+    d->keyboard_have_focus = true;
+    try_keyboard_grab(widget);
     return true;
 }
 
 static gboolean focus_out_event(GtkWidget *widget, GdkEventFocus *focus G_GNUC_UNUSED)
 {
+    SpiceDisplay *display = SPICE_DISPLAY(widget);
+    spice_display *d = SPICE_DISPLAY_GET_PRIVATE(display);
+
     fprintf(stderr, "%s\n", __FUNCTION__);
+    d->keyboard_have_focus = false;
+    try_keyboard_ungrab(widget);
     return true;
 }