/* * Copyright © 2020 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see <http://www.gnu.org/licenses/>. * * Authors: Matthias Clasen <mclasen@redhat.com> */ #include "config.h" #include "gdk-private.h" #include "gdkdragsurfaceprivate.h" #include "gdkintl.h" /** * GdkDragSurface: * * A #GdkDragSurface is an interface implemented by #GdkSurfaces used * during a DND operation. */ /** * GdkDragSurfaceInterface: * * The #GdkDragSurfaceInterface implementation is private to GDK. */ G_DEFINE_INTERFACE (GdkDragSurface, gdk_drag_surface, GDK_TYPE_SURFACE) static gboolean gdk_drag_surface_default_present (GdkDragSurface *drag_surface, int width, int height) { return FALSE; } static void gdk_drag_surface_default_init (GdkDragSurfaceInterface *iface) { iface->present = gdk_drag_surface_default_present; } /** * gdk_drag_surface_present: * @drag_surface: the #GdkDragSurface to show * @width: the unconstrained drag_surface width to layout * @height: the unconstrained drag_surface height to layout * * Present @drag_surface. * * Returns: %FALSE if it failed to be presented, otherwise %TRUE. */ gboolean gdk_drag_surface_present (GdkDragSurface *drag_surface, int width, int height) { g_return_val_if_fail (GDK_IS_DRAG_SURFACE (drag_surface), FALSE); g_return_val_if_fail (width > 0, FALSE); g_return_val_if_fail (height > 0, FALSE); return GDK_DRAG_SURFACE_GET_IFACE (drag_surface)->present (drag_surface, width, height); }