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gdk: Ensure GdkDragContext instantly updates drag window position

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Otherwise we wait for the next gdk_drag_motion() call, which will
happen on the next motion event, making the drag window briefly visible
on the 0,0 root coordinates.

https://bugzilla.gnome.org/show_bug.cgi?id=778203
This commit is contained in:
Carlos Garnacho 2017-02-07 16:35:55 +01:00
parent fdc79c804a
commit d825c34ca3
1 changed files with 23 additions and 6 deletions
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29
gdk/x11/gdkdnd-x11.c
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@ -2035,6 +2035,8 @@ _gdk_x11_window_drag_begin (GdkWindow *window,
GDK_X11_DRAG_CONTEXT (context)->start_x = x_root;
GDK_X11_DRAG_CONTEXT (context)->start_y = y_root;
GDK_X11_DRAG_CONTEXT (context)->last_x = x_root;
GDK_X11_DRAG_CONTEXT (context)->last_y = y_root;
GDK_X11_DRAG_CONTEXT (context)->drag_window = create_drag_window (gdk_window_get_screen (window));
@ -2179,6 +2181,19 @@ gdk_x11_drag_context_find_window (GdkDragContext *context,
return dest_window;
}
static void
move_drag_window (GdkDragContext *context,
guint x_root,
guint y_root)
{
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
gdk_window_move (context_x11->drag_window,
x_root - context_x11->hot_x,
y_root - context_x11->hot_y);
gdk_window_raise (context_x11->drag_window);
}
static gboolean
gdk_x11_drag_context_drag_motion (GdkDragContext *context,
GdkWindow *dest_window,
@ -2193,12 +2208,7 @@ gdk_x11_drag_context_drag_motion (GdkDragContext *context,
GdkWindowImplX11 *impl;
if (context_x11->drag_window)
{
gdk_window_move (context_x11->drag_window,
x_root - context_x11->hot_x,
y_root - context_x11->hot_y);
gdk_window_raise (context_x11->drag_window);
}
move_drag_window (context, x_root, y_root);
context_x11->old_actions = context->actions;
context->actions = possible_actions;
@ -2549,6 +2559,12 @@ gdk_x11_drag_context_set_hotspot (GdkDragContext *context,
x11_context->hot_x = hot_x;
x11_context->hot_y = hot_y;
if (x11_context->grab_seat)
{
/* DnD is managed, update current position */
move_drag_window (context, x11_context->last_x, x11_context->last_y);
}
}
static double
@ -2804,6 +2820,7 @@ gdk_x11_drag_context_manage_dnd (GdkDragContext *context,
if (drag_context_grab (context))
{
x11_context->actions = actions;
move_drag_window (context, x11_context->start_x, x11_context->start_y);
return TRUE;
}
else