/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald * * 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 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 . */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include "gdkx11dnd.h" #include "gdkdndprivate.h" #include "gdkmain.h" #include "gdkinternals.h" #include "gdkasync.h" #include "gdkproperty.h" #include "gdkprivate-x11.h" #include "gdkscreen-x11.h" #include "gdkdisplay-x11.h" #include #include #include #include #ifdef HAVE_XCOMPOSITE #include #endif #include typedef enum { GDK_DRAG_STATUS_DRAG, GDK_DRAG_STATUS_MOTION_WAIT, GDK_DRAG_STATUS_ACTION_WAIT, GDK_DRAG_STATUS_DROP } GtkDragStatus; typedef struct { guint32 xid; gint x, y, width, height; gboolean mapped; gboolean shape_selected; gboolean shape_valid; cairo_region_t *shape; } GdkCacheChild; typedef struct { GList *children; GHashTable *child_hash; guint old_event_mask; GdkScreen *screen; gint ref_count; } GdkWindowCache; struct _GdkX11DragContext { GdkDragContext context; gint start_x; /* Where the drag started */ gint start_y; guint16 last_x; /* Coordinates from last event */ guint16 last_y; GdkDragAction old_action; /* The last action we sent to the source */ GdkDragAction old_actions; /* The last actions we sent to the source */ GdkDragAction xdnd_actions; /* What is currently set in XdndActionList */ guint version; /* Xdnd protocol version */ GSList *window_caches; GdkWindow *drag_window; GdkWindow *ipc_window; GdkCursor *cursor; GdkSeat *grab_seat; GdkDragAction actions; GdkDragAction current_action; gint hot_x; gint hot_y; Window dest_xid; /* The last window we looked up */ Window drop_xid; /* The (non-proxied) window that is receiving drops */ guint xdnd_targets_set : 1; /* Whether we've already set XdndTypeList */ guint xdnd_actions_set : 1; /* Whether we've already set XdndActionList */ guint xdnd_have_actions : 1; /* Whether an XdndActionList was provided */ guint drag_status : 4; /* current status of drag */ guint drop_failed : 1; /* Whether the drop was unsuccessful */ }; struct _GdkX11DragContextClass { GdkDragContextClass parent_class; }; typedef struct { gint keysym; gint modifiers; } GrabKey; static GrabKey grab_keys[] = { { XK_Escape, 0 }, { XK_space, 0 }, { XK_KP_Space, 0 }, { XK_Return, 0 }, { XK_KP_Enter, 0 }, { XK_Up, 0 }, { XK_Up, Mod1Mask }, { XK_Down, 0 }, { XK_Down, Mod1Mask }, { XK_Left, 0 }, { XK_Left, Mod1Mask }, { XK_Right, 0 }, { XK_Right, Mod1Mask }, { XK_KP_Up, 0 }, { XK_KP_Up, Mod1Mask }, { XK_KP_Down, 0 }, { XK_KP_Down, Mod1Mask }, { XK_KP_Left, 0 }, { XK_KP_Left, Mod1Mask }, { XK_KP_Right, 0 }, { XK_KP_Right, Mod1Mask } }; /* Forward declarations */ static GdkWindowCache *gdk_window_cache_get (GdkScreen *screen); static GdkWindowCache *gdk_window_cache_ref (GdkWindowCache *cache); static void gdk_window_cache_unref (GdkWindowCache *cache); static GdkFilterReturn xdnd_enter_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static GdkFilterReturn xdnd_leave_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static GdkFilterReturn xdnd_position_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static GdkFilterReturn xdnd_status_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static GdkFilterReturn xdnd_finished_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static GdkFilterReturn xdnd_drop_filter (GdkXEvent *xev, GdkEvent *event, gpointer data); static void xdnd_manage_source_filter (GdkDragContext *context, GdkWindow *window, gboolean add_filter); gboolean gdk_x11_drag_context_handle_event (GdkDragContext *context, const GdkEvent *event); void gdk_x11_drag_context_action_changed (GdkDragContext *context, GdkDragAction action); static GList *contexts; static GSList *window_caches; static const struct { const char *atom_name; GdkFilterFunc func; } xdnd_filters[] = { { "XdndEnter", xdnd_enter_filter }, { "XdndLeave", xdnd_leave_filter }, { "XdndPosition", xdnd_position_filter }, { "XdndStatus", xdnd_status_filter }, { "XdndFinished", xdnd_finished_filter }, { "XdndDrop", xdnd_drop_filter }, }; G_DEFINE_TYPE (GdkX11DragContext, gdk_x11_drag_context, GDK_TYPE_DRAG_CONTEXT) static void gdk_x11_drag_context_init (GdkX11DragContext *context) { contexts = g_list_prepend (contexts, context); } static void gdk_x11_drag_context_finalize (GObject *object); static GdkWindow * gdk_x11_drag_context_find_window (GdkDragContext *context, GdkWindow *drag_window, GdkScreen *screen, gint x_root, gint y_root, GdkDragProtocol *protocol); static gboolean gdk_x11_drag_context_drag_motion (GdkDragContext *context, GdkWindow *dest_window, GdkDragProtocol protocol, gint x_root, gint y_root, GdkDragAction suggested_action, GdkDragAction possible_actions, guint32 time); static void gdk_x11_drag_context_drag_status (GdkDragContext *context, GdkDragAction action, guint32 time_); static void gdk_x11_drag_context_drag_abort (GdkDragContext *context, guint32 time_); static void gdk_x11_drag_context_drag_drop (GdkDragContext *context, guint32 time_); static void gdk_x11_drag_context_drop_reply (GdkDragContext *context, gboolean accept, guint32 time_); static void gdk_x11_drag_context_drop_finish (GdkDragContext *context, gboolean success, guint32 time_); static gboolean gdk_x11_drag_context_drop_status (GdkDragContext *context); static GdkAtom gdk_x11_drag_context_get_selection (GdkDragContext *context); static GdkWindow * gdk_x11_drag_context_get_drag_window (GdkDragContext *context); static void gdk_x11_drag_context_set_hotspot (GdkDragContext *context, gint hot_x, gint hot_y); static void gdk_x11_drag_context_drop_done (GdkDragContext *context, gboolean success); static gboolean gdk_x11_drag_context_manage_dnd (GdkDragContext *context, GdkWindow *window, GdkDragAction actions); static void gdk_x11_drag_context_set_cursor (GdkDragContext *context, GdkCursor *cursor); static void gdk_x11_drag_context_cancel (GdkDragContext *context, GdkDragCancelReason reason); static void gdk_x11_drag_context_drop_performed (GdkDragContext *context, guint32 time); static void gdk_x11_drag_context_class_init (GdkX11DragContextClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GdkDragContextClass *context_class = GDK_DRAG_CONTEXT_CLASS (klass); object_class->finalize = gdk_x11_drag_context_finalize; context_class->find_window = gdk_x11_drag_context_find_window; context_class->drag_status = gdk_x11_drag_context_drag_status; context_class->drag_motion = gdk_x11_drag_context_drag_motion; context_class->drag_abort = gdk_x11_drag_context_drag_abort; context_class->drag_drop = gdk_x11_drag_context_drag_drop; context_class->drop_reply = gdk_x11_drag_context_drop_reply; context_class->drop_finish = gdk_x11_drag_context_drop_finish; context_class->drop_status = gdk_x11_drag_context_drop_status; context_class->get_selection = gdk_x11_drag_context_get_selection; context_class->get_drag_window = gdk_x11_drag_context_get_drag_window; context_class->set_hotspot = gdk_x11_drag_context_set_hotspot; context_class->drop_done = gdk_x11_drag_context_drop_done; context_class->manage_dnd = gdk_x11_drag_context_manage_dnd; context_class->set_cursor = gdk_x11_drag_context_set_cursor; context_class->cancel = gdk_x11_drag_context_cancel; context_class->drop_performed = gdk_x11_drag_context_drop_performed; context_class->handle_event = gdk_x11_drag_context_handle_event; context_class->action_changed = gdk_x11_drag_context_action_changed; } static void gdk_x11_drag_context_finalize (GObject *object) { GdkDragContext *context = GDK_DRAG_CONTEXT (object); GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (object); GdkWindow *drag_window; if (context->source_window) { if ((context->protocol == GDK_DRAG_PROTO_XDND) && !context->is_source) xdnd_manage_source_filter (context, context->source_window, FALSE); } g_slist_free_full (x11_context->window_caches, (GDestroyNotify)gdk_window_cache_unref); x11_context->window_caches = NULL; contexts = g_list_remove (contexts, context); drag_window = context->drag_window; G_OBJECT_CLASS (gdk_x11_drag_context_parent_class)->finalize (object); if (drag_window) gdk_window_destroy (drag_window); } /* Drag Contexts */ static GdkDragContext * gdk_drag_context_find (GdkDisplay *display, gboolean is_source, Window source_xid, Window dest_xid) { GList *tmp_list; GdkDragContext *context; GdkX11DragContext *context_x11; Window context_dest_xid; for (tmp_list = contexts; tmp_list; tmp_list = tmp_list->next) { context = (GdkDragContext *)tmp_list->data; context_x11 = (GdkX11DragContext *)context; if ((context->source_window && gdk_window_get_display (context->source_window) != display) || (context->dest_window && gdk_window_get_display (context->dest_window) != display)) continue; context_dest_xid = context->dest_window ? (context_x11->drop_xid ? context_x11->drop_xid : GDK_WINDOW_XID (context->dest_window)) : None; if ((!context->is_source == !is_source) && ((source_xid == None) || (context->source_window && (GDK_WINDOW_XID (context->source_window) == source_xid))) && ((dest_xid == None) || (context_dest_xid == dest_xid))) return context; } return NULL; } static void precache_target_list (GdkDragContext *context) { if (context->targets) { GPtrArray *targets = g_ptr_array_new (); GList *tmp_list; int i; for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next) g_ptr_array_add (targets, gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data))); _gdk_x11_precache_atoms (GDK_WINDOW_DISPLAY (context->source_window), (const gchar **)targets->pdata, targets->len); for (i =0; i < targets->len; i++) g_free (targets->pdata[i]); g_ptr_array_free (targets, TRUE); } } /* Utility functions */ static void free_cache_child (GdkCacheChild *child, GdkDisplay *display) { if (child->shape) cairo_region_destroy (child->shape); if (child->shape_selected && display) { GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); XShapeSelectInput (display_x11->xdisplay, child->xid, 0); } g_free (child); } static void gdk_window_cache_add (GdkWindowCache *cache, guint32 xid, gint x, gint y, gint width, gint height, gboolean mapped) { GdkCacheChild *child = g_new (GdkCacheChild, 1); child->xid = xid; child->x = x; child->y = y; child->width = width; child->height = height; child->mapped = mapped; child->shape_selected = FALSE; child->shape_valid = FALSE; child->shape = NULL; cache->children = g_list_prepend (cache->children, child); g_hash_table_insert (cache->child_hash, GUINT_TO_POINTER (xid), cache->children); } static GdkFilterReturn gdk_window_cache_shape_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; GdkWindowCache *cache = data; GdkX11Display *display = GDK_X11_DISPLAY (gdk_screen_get_display (cache->screen)); if (display->have_shapes && xevent->type == display->shape_event_base + ShapeNotify) { XShapeEvent *xse = (XShapeEvent*)xevent; GList *node; node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xse->window)); if (node) { GdkCacheChild *child = node->data; child->shape_valid = FALSE; if (child->shape) { cairo_region_destroy (child->shape); child->shape = NULL; } } return GDK_FILTER_REMOVE; } return GDK_FILTER_CONTINUE; } static GdkFilterReturn gdk_window_cache_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; GdkWindowCache *cache = data; switch (xevent->type) { case CirculateNotify: break; case ConfigureNotify: { XConfigureEvent *xce = &xevent->xconfigure; GList *node; node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xce->window)); if (node) { GdkCacheChild *child = node->data; child->x = xce->x; child->y = xce->y; child->width = xce->width; child->height = xce->height; if (xce->above == None && (node->next)) { GList *last = g_list_last (cache->children); cache->children = g_list_remove_link (cache->children, node); last->next = node; node->next = NULL; node->prev = last; } else { GList *above_node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xce->above)); if (above_node && node->next != above_node) { /* Put the window above (before in the list) above_node */ cache->children = g_list_remove_link (cache->children, node); node->prev = above_node->prev; if (node->prev) node->prev->next = node; else cache->children = node; node->next = above_node; above_node->prev = node; } } } break; } case CreateNotify: { XCreateWindowEvent *xcwe = &xevent->xcreatewindow; if (!g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xcwe->window))) gdk_window_cache_add (cache, xcwe->window, xcwe->x, xcwe->y, xcwe->width, xcwe->height, FALSE); break; } case DestroyNotify: { XDestroyWindowEvent *xdwe = &xevent->xdestroywindow; GList *node; node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xdwe->window)); if (node) { GdkCacheChild *child = node->data; g_hash_table_remove (cache->child_hash, GUINT_TO_POINTER (xdwe->window)); cache->children = g_list_remove_link (cache->children, node); /* window is destroyed, no need to disable ShapeNotify */ free_cache_child (child, NULL); g_list_free_1 (node); } break; } case MapNotify: { XMapEvent *xme = &xevent->xmap; GList *node; node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xme->window)); if (node) { GdkCacheChild *child = node->data; child->mapped = TRUE; } break; } case ReparentNotify: break; case UnmapNotify: { XMapEvent *xume = &xevent->xmap; GList *node; node = g_hash_table_lookup (cache->child_hash, GUINT_TO_POINTER (xume->window)); if (node) { GdkCacheChild *child = node->data; child->mapped = FALSE; } break; } default: return GDK_FILTER_CONTINUE; } return GDK_FILTER_REMOVE; } static GdkWindowCache * gdk_window_cache_new (GdkScreen *screen) { XWindowAttributes xwa; Display *xdisplay = GDK_SCREEN_XDISPLAY (screen); GdkWindow *root_window = gdk_screen_get_root_window (screen); GdkChildInfoX11 *children; guint nchildren, i; #ifdef HAVE_XCOMPOSITE Window cow; #endif GdkWindowCache *result = g_new (GdkWindowCache, 1); result->children = NULL; result->child_hash = g_hash_table_new (g_direct_hash, NULL); result->screen = screen; result->ref_count = 1; XGetWindowAttributes (xdisplay, GDK_WINDOW_XID (root_window), &xwa); result->old_event_mask = xwa.your_event_mask; if (G_UNLIKELY (!GDK_X11_DISPLAY (GDK_X11_SCREEN (screen)->display)->trusted_client)) { GList *toplevel_windows, *list; GdkWindow *window; GdkWindowImplX11 *impl; gint x, y, width, height; toplevel_windows = gdk_screen_get_toplevel_windows (screen); for (list = toplevel_windows; list; list = list->next) { window = GDK_WINDOW (list->data); impl = GDK_WINDOW_IMPL_X11 (window->impl); gdk_window_get_geometry (window, &x, &y, &width, &height); gdk_window_cache_add (result, GDK_WINDOW_XID (window), x * impl->window_scale, y * impl->window_scale, width * impl->window_scale, height * impl->window_scale, gdk_window_is_visible (window)); } g_list_free (toplevel_windows); return result; } XSelectInput (xdisplay, GDK_WINDOW_XID (root_window), result->old_event_mask | SubstructureNotifyMask); gdk_window_add_filter (root_window, gdk_window_cache_filter, result); gdk_window_add_filter (NULL, gdk_window_cache_shape_filter, result); if (!_gdk_x11_get_window_child_info (gdk_screen_get_display (screen), GDK_WINDOW_XID (root_window), FALSE, NULL, &children, &nchildren)) return result; for (i = 0; i < nchildren ; i++) { gdk_window_cache_add (result, children[i].window, children[i].x, children[i].y, children[i].width, children[i].height, children[i].is_mapped); } g_free (children); #ifdef HAVE_XCOMPOSITE /* * Add the composite overlay window to the cache, as this can be a reasonable * Xdnd proxy as well. * This is only done when the screen is composited in order to avoid mapping * the COW. We assume that the CM is using the COW (which is true for pretty * much any CM currently in use). */ if (gdk_display_is_composited (gdk_screen_get_display (screen))) { cow = XCompositeGetOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window)); gdk_window_cache_add (result, cow, 0, 0, gdk_window_get_width (root_window) * GDK_X11_SCREEN(screen)->window_scale, gdk_window_get_height (root_window) * GDK_X11_SCREEN(screen)->window_scale, TRUE); XCompositeReleaseOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window)); } #endif return result; } static void gdk_window_cache_destroy (GdkWindowCache *cache) { GdkWindow *root_window = gdk_screen_get_root_window (cache->screen); GdkDisplay *display; XSelectInput (GDK_WINDOW_XDISPLAY (root_window), GDK_WINDOW_XID (root_window), cache->old_event_mask); gdk_window_remove_filter (root_window, gdk_window_cache_filter, cache); gdk_window_remove_filter (NULL, gdk_window_cache_shape_filter, cache); display = gdk_screen_get_display (cache->screen); gdk_x11_display_error_trap_push (display); g_list_foreach (cache->children, (GFunc)free_cache_child, display); gdk_x11_display_error_trap_pop_ignored (display); g_list_free (cache->children); g_hash_table_destroy (cache->child_hash); g_free (cache); } static GdkWindowCache * gdk_window_cache_ref (GdkWindowCache *cache) { cache->ref_count += 1; return cache; } static void gdk_window_cache_unref (GdkWindowCache *cache) { g_assert (cache->ref_count > 0); cache->ref_count -= 1; if (cache->ref_count == 0) { window_caches = g_slist_remove (window_caches, cache); gdk_window_cache_destroy (cache); } } GdkWindowCache * gdk_window_cache_get (GdkScreen *screen) { GSList *list; GdkWindowCache *cache; for (list = window_caches; list; list = list->next) { cache = list->data; if (cache->screen == screen) return gdk_window_cache_ref (cache); } cache = gdk_window_cache_new (screen); window_caches = g_slist_prepend (window_caches, cache); return cache; } static gboolean is_pointer_within_shape (GdkDisplay *display, GdkCacheChild *child, gint x_pos, gint y_pos) { if (!child->shape_selected) { GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); XShapeSelectInput (display_x11->xdisplay, child->xid, ShapeNotifyMask); child->shape_selected = TRUE; } if (!child->shape_valid) { GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); cairo_region_t *input_shape; child->shape = NULL; if (gdk_display_supports_shapes (display)) child->shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay, child->xid, 1, ShapeBounding); #ifdef ShapeInput input_shape = NULL; if (gdk_display_supports_input_shapes (display)) input_shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay, child->xid, 1, ShapeInput); if (child->shape && input_shape) { cairo_region_intersect (child->shape, input_shape); cairo_region_destroy (input_shape); } else if (input_shape) { child->shape = input_shape; } #endif child->shape_valid = TRUE; } return child->shape == NULL || cairo_region_contains_point (child->shape, x_pos, y_pos); } static Window get_client_window_at_coords_recurse (GdkDisplay *display, Window win, gboolean is_toplevel, gint x, gint y) { GdkChildInfoX11 *children; unsigned int nchildren; int i; gboolean found_child = FALSE; GdkChildInfoX11 child = { 0, }; gboolean has_wm_state = FALSE; if (!_gdk_x11_get_window_child_info (display, win, TRUE, is_toplevel? &has_wm_state : NULL, &children, &nchildren)) return None; if (has_wm_state) { g_free (children); return win; } for (i = nchildren - 1; (i >= 0) && !found_child; i--) { GdkChildInfoX11 *cur_child = &children[i]; if ((cur_child->is_mapped) && (cur_child->window_class == InputOutput) && (x >= cur_child->x) && (x < cur_child->x + cur_child->width) && (y >= cur_child->y) && (y < cur_child->y + cur_child->height)) { x -= cur_child->x; y -= cur_child->y; child = *cur_child; found_child = TRUE; } } g_free (children); if (found_child) { if (child.has_wm_state) return child.window; else return get_client_window_at_coords_recurse (display, child.window, FALSE, x, y); } else return None; } static Window get_client_window_at_coords (GdkWindowCache *cache, Window ignore, gint x_root, gint y_root) { GList *tmp_list; Window retval = None; GdkDisplay *display; display = gdk_screen_get_display (cache->screen); gdk_x11_display_error_trap_push (display); tmp_list = cache->children; while (tmp_list && !retval) { GdkCacheChild *child = tmp_list->data; if ((child->xid != ignore) && (child->mapped)) { if ((x_root >= child->x) && (x_root < child->x + child->width) && (y_root >= child->y) && (y_root < child->y + child->height)) { if (!is_pointer_within_shape (display, child, x_root - child->x, y_root - child->y)) { tmp_list = tmp_list->next; continue; } retval = get_client_window_at_coords_recurse (display, child->xid, TRUE, x_root - child->x, y_root - child->y); if (!retval) retval = child->xid; } } tmp_list = tmp_list->next; } gdk_x11_display_error_trap_pop_ignored (display); if (retval) return retval; else return GDK_WINDOW_XID (gdk_screen_get_root_window (cache->screen)); } #ifdef G_ENABLE_DEBUG static void print_target_list (GList *targets) { while (targets) { gchar *name = gdk_atom_name (GDK_POINTER_TO_ATOM (targets->data)); g_message ("\t%s", name); g_free (name); targets = targets->next; } } #endif /* G_ENABLE_DEBUG */ /************************************************************* ***************************** XDND ************************** *************************************************************/ /* Utility functions */ static struct { const gchar *name; GdkAtom atom; GdkDragAction action; } xdnd_actions_table[] = { { "XdndActionCopy", None, GDK_ACTION_COPY }, { "XdndActionMove", None, GDK_ACTION_MOVE }, { "XdndActionLink", None, GDK_ACTION_LINK }, { "XdndActionAsk", None, GDK_ACTION_ASK }, { "XdndActionPrivate", None, GDK_ACTION_COPY }, }; static const gint xdnd_n_actions = G_N_ELEMENTS (xdnd_actions_table); static gboolean xdnd_actions_initialized = FALSE; static void xdnd_initialize_actions (void) { gint i; xdnd_actions_initialized = TRUE; for (i = 0; i < xdnd_n_actions; i++) xdnd_actions_table[i].atom = gdk_atom_intern_static_string (xdnd_actions_table[i].name); } static GdkDragAction xdnd_action_from_atom (GdkDisplay *display, Atom xatom) { GdkAtom atom; gint i; if (xatom == None) return 0; atom = gdk_x11_xatom_to_atom_for_display (display, xatom); if (!xdnd_actions_initialized) xdnd_initialize_actions(); for (i = 0; i < xdnd_n_actions; i++) if (atom == xdnd_actions_table[i].atom) return xdnd_actions_table[i].action; return 0; } static Atom xdnd_action_to_atom (GdkDisplay *display, GdkDragAction action) { gint i; if (!xdnd_actions_initialized) xdnd_initialize_actions(); for (i = 0; i < xdnd_n_actions; i++) if (action == xdnd_actions_table[i].action) return gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom); return None; } /* Source side */ static GdkFilterReturn xdnd_status_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { GdkDisplay *display; XEvent *xevent = (XEvent *)xev; guint32 dest_window = xevent->xclient.data.l[0]; guint32 flags = xevent->xclient.data.l[1]; Atom action = xevent->xclient.data.l[4]; GdkDragContext *context; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ GDK_NOTE (DND, g_message ("XdndStatus: dest_window: %#x action: %ld", dest_window, action)); display = gdk_window_get_display (event->any.window); context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window); if (context) { GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); if (context_x11->drag_status == GDK_DRAG_STATUS_MOTION_WAIT) context_x11->drag_status = GDK_DRAG_STATUS_DRAG; event->dnd.send_event = FALSE; event->dnd.type = GDK_DRAG_STATUS; event->dnd.context = context; gdk_event_set_device (event, gdk_drag_context_get_device (context)); g_object_ref (context); event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */ if (!(action != 0) != !(flags & 1)) { GDK_NOTE (DND, g_warning ("Received status event with flags not corresponding to action!")); action = 0; } context->action = xdnd_action_from_atom (display, action); return GDK_FILTER_TRANSLATE; } return GDK_FILTER_REMOVE; } static GdkFilterReturn xdnd_finished_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { GdkDisplay *display; XEvent *xevent = (XEvent *)xev; guint32 dest_window = xevent->xclient.data.l[0]; GdkDragContext *context; GdkX11DragContext *context_x11; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ GDK_NOTE (DND, g_message ("XdndFinished: dest_window: %#x", dest_window)); display = gdk_window_get_display (event->any.window); context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window); if (context) { context_x11 = GDK_X11_DRAG_CONTEXT (context); if (context_x11->version == 5) context_x11->drop_failed = xevent->xclient.data.l[1] == 0; event->dnd.type = GDK_DROP_FINISHED; event->dnd.context = context; gdk_event_set_device (event, gdk_drag_context_get_device (context)); g_object_ref (context); event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */ return GDK_FILTER_TRANSLATE; } return GDK_FILTER_REMOVE; } static void xdnd_set_targets (GdkX11DragContext *context_x11) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); Atom *atomlist; GList *tmp_list = context->targets; gint i; gint n_atoms = g_list_length (context->targets); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); atomlist = g_new (Atom, n_atoms); i = 0; while (tmp_list) { atomlist[i] = gdk_x11_atom_to_xatom_for_display (display, GDK_POINTER_TO_ATOM (tmp_list->data)); tmp_list = tmp_list->next; i++; } XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window), GDK_WINDOW_XID (context->source_window), gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"), XA_ATOM, 32, PropModeReplace, (guchar *)atomlist, n_atoms); g_free (atomlist); context_x11->xdnd_targets_set = 1; } static void xdnd_set_actions (GdkX11DragContext *context_x11) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); Atom *atomlist; gint i; gint n_atoms; guint actions; GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); if (!xdnd_actions_initialized) xdnd_initialize_actions(); actions = context->actions; n_atoms = 0; for (i = 0; i < xdnd_n_actions; i++) { if (actions & xdnd_actions_table[i].action) { actions &= ~xdnd_actions_table[i].action; n_atoms++; } } atomlist = g_new (Atom, n_atoms); actions = context->actions; n_atoms = 0; for (i = 0; i < xdnd_n_actions; i++) { if (actions & xdnd_actions_table[i].action) { actions &= ~xdnd_actions_table[i].action; atomlist[n_atoms] = gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom); n_atoms++; } } XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window), GDK_WINDOW_XID (context->source_window), gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"), XA_ATOM, 32, PropModeReplace, (guchar *)atomlist, n_atoms); g_free (atomlist); context_x11->xdnd_actions_set = TRUE; context_x11->xdnd_actions = context->actions; } static void send_client_message_async_cb (Window window, gboolean success, gpointer data) { GdkDragContext *context = data; GDK_NOTE (DND, g_message ("Got async callback for #%lx, success = %d", window, success)); /* On failure, we immediately continue with the protocol * so we don't end up blocking for a timeout */ if (!success && context->dest_window && window == GDK_WINDOW_XID (context->dest_window)) { GdkEvent *temp_event; GdkX11DragContext *context_x11 = data; g_object_unref (context->dest_window); context->dest_window = NULL; context->action = 0; context_x11->drag_status = GDK_DRAG_STATUS_DRAG; temp_event = gdk_event_new (GDK_DRAG_STATUS); temp_event->dnd.window = g_object_ref (context->source_window); temp_event->dnd.send_event = TRUE; temp_event->dnd.context = g_object_ref (context); temp_event->dnd.time = GDK_CURRENT_TIME; gdk_event_set_device (temp_event, gdk_drag_context_get_device (context)); gdk_event_put (temp_event); gdk_event_free (temp_event); } g_object_unref (context); } static GdkDisplay * gdk_drag_context_get_display (GdkDragContext *context) { if (context->source_window) return GDK_WINDOW_DISPLAY (context->source_window); else if (context->dest_window) return GDK_WINDOW_DISPLAY (context->dest_window); g_assert_not_reached (); return NULL; } static void send_client_message_async (GdkDragContext *context, Window window, gboolean propagate, glong event_mask, XClientMessageEvent *event_send) { GdkDisplay *display = gdk_drag_context_get_display (context); g_object_ref (context); _gdk_x11_send_client_message_async (display, window, propagate, event_mask, event_send, send_client_message_async_cb, context); } static gboolean xdnd_send_xevent (GdkX11DragContext *context_x11, GdkWindow *window, gboolean propagate, XEvent *event_send) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = gdk_drag_context_get_display (context); Window xwindow; glong event_mask; g_assert (event_send->xany.type == ClientMessage); /* We short-circuit messages to ourselves */ if (gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN) { gint i; for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++) { if (gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name) == event_send->xclient.message_type) { GdkEvent *temp_event; temp_event = gdk_event_new (GDK_NOTHING); temp_event->any.window = g_object_ref (window); if ((*xdnd_filters[i].func) (event_send, temp_event, NULL) == GDK_FILTER_TRANSLATE) gdk_event_put (temp_event); gdk_event_free (temp_event); return TRUE; } } } xwindow = GDK_WINDOW_XID (window); if (_gdk_x11_display_is_root_window (display, xwindow)) event_mask = ButtonPressMask; else event_mask = 0; send_client_message_async (context, xwindow, propagate, event_mask, &event_send->xclient); return TRUE; } static void xdnd_send_enter (GdkX11DragContext *context_x11) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->dest_window); XEvent xev; xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndEnter"); xev.xclient.format = 32; xev.xclient.window = context_x11->drop_xid ? context_x11->drop_xid : GDK_WINDOW_XID (context->dest_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[1] = (context_x11->version << 24); /* version */ xev.xclient.data.l[2] = 0; xev.xclient.data.l[3] = 0; xev.xclient.data.l[4] = 0; GDK_NOTE(DND, g_message ("Sending enter source window %#lx XDND protocol version %d\n", GDK_WINDOW_XID (context->source_window), context_x11->version)); if (g_list_length (context->targets) > 3) { if (!context_x11->xdnd_targets_set) xdnd_set_targets (context_x11); xev.xclient.data.l[1] |= 1; } else { GList *tmp_list = context->targets; gint i = 2; while (tmp_list) { xev.xclient.data.l[i] = gdk_x11_atom_to_xatom_for_display (display, GDK_POINTER_TO_ATOM (tmp_list->data)); tmp_list = tmp_list->next; i++; } } if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->dest_window))); g_object_unref (context->dest_window); context->dest_window = NULL; } } static void xdnd_send_leave (GdkX11DragContext *context_x11) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); XEvent xev; xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndLeave"); xev.xclient.format = 32; xev.xclient.window = context_x11->drop_xid ? context_x11->drop_xid : GDK_WINDOW_XID (context->dest_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[1] = 0; xev.xclient.data.l[2] = 0; xev.xclient.data.l[3] = 0; xev.xclient.data.l[4] = 0; if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->dest_window))); g_object_unref (context->dest_window); context->dest_window = NULL; } } static void xdnd_send_drop (GdkX11DragContext *context_x11, guint32 time) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); XEvent xev; xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndDrop"); xev.xclient.format = 32; xev.xclient.window = context_x11->drop_xid ? context_x11->drop_xid : GDK_WINDOW_XID (context->dest_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[1] = 0; xev.xclient.data.l[2] = time; xev.xclient.data.l[3] = 0; xev.xclient.data.l[4] = 0; if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->dest_window))); g_object_unref (context->dest_window); context->dest_window = NULL; } } static void xdnd_send_motion (GdkX11DragContext *context_x11, gint x_root, gint y_root, GdkDragAction action, guint32 time) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); XEvent xev; xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndPosition"); xev.xclient.format = 32; xev.xclient.window = context_x11->drop_xid ? context_x11->drop_xid : GDK_WINDOW_XID (context->dest_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[1] = 0; xev.xclient.data.l[2] = (x_root << 16) | y_root; xev.xclient.data.l[3] = time; xev.xclient.data.l[4] = xdnd_action_to_atom (display, action); if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->dest_window))); g_object_unref (context->dest_window); context->dest_window = NULL; } context_x11->drag_status = GDK_DRAG_STATUS_MOTION_WAIT; } static guint32 xdnd_check_dest (GdkDisplay *display, Window win, guint *xdnd_version) { gboolean retval = FALSE; Atom type = None; int format; unsigned long nitems, after; guchar *data; Atom *version; Window *proxy_data; Window proxy; Atom xdnd_proxy_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndProxy"); Atom xdnd_aware_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndAware"); proxy = None; gdk_x11_display_error_trap_push (display); if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), win, xdnd_proxy_atom, 0, 1, False, AnyPropertyType, &type, &format, &nitems, &after, &data) == Success) { if (type != None) { proxy_data = (Window *)data; if ((format == 32) && (nitems == 1)) { proxy = *proxy_data; } else { GDK_NOTE (DND, g_warning ("Invalid XdndProxy property on window %ld", win)); } XFree (proxy_data); } if ((XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), proxy ? proxy : win, xdnd_aware_atom, 0, 1, False, AnyPropertyType, &type, &format, &nitems, &after, &data) == Success) && type != None) { version = (Atom *)data; if ((format == 32) && (nitems == 1)) { if (*version >= 3) retval = TRUE; if (xdnd_version) *xdnd_version = *version; } else { GDK_NOTE (DND, g_warning ("Invalid XdndAware property on window %ld", win)); } XFree (version); } } gdk_x11_display_error_trap_pop_ignored (display); return retval ? (proxy ? proxy : win) : None; } /* Target side */ static void xdnd_read_actions (GdkX11DragContext *context_x11) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); Atom type; int format; gulong nitems, after; guchar *data; Atom *atoms; gint i; context_x11->xdnd_have_actions = FALSE; if (gdk_window_get_window_type (context->source_window) == GDK_WINDOW_FOREIGN) { /* Get the XdndActionList, if set */ gdk_x11_display_error_trap_push (display); if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (context->source_window), gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"), 0, 65536, False, XA_ATOM, &type, &format, &nitems, &after, &data) == Success && type == XA_ATOM) { atoms = (Atom *)data; context->actions = 0; for (i = 0; i < nitems; i++) context->actions |= xdnd_action_from_atom (display, atoms[i]); context_x11->xdnd_have_actions = TRUE; #ifdef G_ENABLE_DEBUG if (GDK_DEBUG_CHECK (DND)) { GString *action_str = g_string_new (NULL); if (context->actions & GDK_ACTION_MOVE) g_string_append(action_str, "MOVE "); if (context->actions & GDK_ACTION_COPY) g_string_append(action_str, "COPY "); if (context->actions & GDK_ACTION_LINK) g_string_append(action_str, "LINK "); if (context->actions & GDK_ACTION_ASK) g_string_append(action_str, "ASK "); g_message("Xdnd actions = %s", action_str->str); g_string_free (action_str, TRUE); } #endif /* G_ENABLE_DEBUG */ } if (data) XFree (data); gdk_x11_display_error_trap_pop_ignored (display); } else { /* Local drag */ GdkDragContext *source_context; source_context = gdk_drag_context_find (display, TRUE, GDK_WINDOW_XID (context->source_window), GDK_WINDOW_XID (context->dest_window)); if (source_context) { context->actions = source_context->actions; context_x11->xdnd_have_actions = TRUE; } } } /* We have to make sure that the XdndActionList we keep internally * is up to date with the XdndActionList on the source window * because we get no notification, because Xdnd wasn’t meant * to continually send actions. So we select on PropertyChangeMask * and add this filter. */ static GdkFilterReturn xdnd_source_window_filter (GdkXEvent *xev, GdkEvent *event, gpointer cb_data) { XEvent *xevent = (XEvent *)xev; GdkX11DragContext *context_x11 = cb_data; GdkDisplay *display = GDK_WINDOW_DISPLAY(event->any.window); if ((xevent->xany.type == PropertyNotify) && (xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"))) { xdnd_read_actions (context_x11); return GDK_FILTER_REMOVE; } return GDK_FILTER_CONTINUE; } static void xdnd_manage_source_filter (GdkDragContext *context, GdkWindow *window, gboolean add_filter) { if (!GDK_WINDOW_DESTROYED (window) && gdk_window_get_window_type (window) == GDK_WINDOW_FOREIGN) { gdk_x11_display_error_trap_push (GDK_WINDOW_DISPLAY (window)); if (add_filter) { gdk_window_set_events (window, gdk_window_get_events (window) | GDK_PROPERTY_CHANGE_MASK); gdk_window_add_filter (window, xdnd_source_window_filter, context); } else { gdk_window_remove_filter (window, xdnd_source_window_filter, context); /* Should we remove the GDK_PROPERTY_NOTIFY mask? * but we might want it for other reasons. (Like * INCR selection transactions). */ } gdk_x11_display_error_trap_pop_ignored (GDK_WINDOW_DISPLAY (window)); } } static void base_precache_atoms (GdkDisplay *display) { GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); if (!display_x11->base_dnd_atoms_precached) { static const char *const precache_atoms[] = { "WM_STATE", "XdndAware", "XdndProxy" }; _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms)); display_x11->base_dnd_atoms_precached = TRUE; } } static void xdnd_precache_atoms (GdkDisplay *display) { GdkX11Display *display_x11 = GDK_X11_DISPLAY (display); if (!display_x11->xdnd_atoms_precached) { static const gchar *const precache_atoms[] = { "XdndActionAsk", "XdndActionCopy", "XdndActionLink", "XdndActionList", "XdndActionMove", "XdndActionPrivate", "XdndDrop", "XdndEnter", "XdndFinished", "XdndLeave", "XdndPosition", "XdndSelection", "XdndStatus", "XdndTypeList" }; _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms)); display_x11->xdnd_atoms_precached = TRUE; } } static GdkFilterReturn xdnd_enter_filter (GdkXEvent *xev, GdkEvent *event, gpointer cb_data) { GdkDisplay *display; GdkX11Display *display_x11; XEvent *xevent = (XEvent *)xev; GdkDragContext *context; GdkX11DragContext *context_x11; GdkSeat *seat; gint i; Atom type; int format; gulong nitems, after; guchar *data; Atom *atoms; guint32 source_window; gboolean get_types; gint version; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ source_window = xevent->xclient.data.l[0]; get_types = ((xevent->xclient.data.l[1] & 1) != 0); version = (xevent->xclient.data.l[1] & 0xff000000) >> 24; display = GDK_WINDOW_DISPLAY (event->any.window); display_x11 = GDK_X11_DISPLAY (display); xdnd_precache_atoms (display); GDK_NOTE (DND, g_message ("XdndEnter: source_window: %#x, version: %#x", source_window, version)); if (version < 3) { /* Old source ignore */ GDK_NOTE (DND, g_message ("Ignored old XdndEnter message")); return GDK_FILTER_REMOVE; } if (display_x11->current_dest_drag != NULL) { g_object_unref (display_x11->current_dest_drag); display_x11->current_dest_drag = NULL; } context_x11 = (GdkX11DragContext *)g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL); context = (GdkDragContext *)context_x11; context->display = display; context->protocol = GDK_DRAG_PROTO_XDND; context_x11->version = version; /* FIXME: Should extend DnD protocol to have device info */ seat = gdk_display_get_default_seat (display); gdk_drag_context_set_device (context, gdk_seat_get_pointer (seat)); context->source_window = gdk_x11_window_foreign_new_for_display (display, source_window); if (!context->source_window) { g_object_unref (context); return GDK_FILTER_REMOVE; } context->dest_window = event->any.window; g_object_ref (context->dest_window); context->targets = NULL; if (get_types) { gdk_x11_display_error_trap_push (display); XGetWindowProperty (GDK_WINDOW_XDISPLAY (event->any.window), source_window, gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"), 0, 65536, False, XA_ATOM, &type, &format, &nitems, &after, &data); if (gdk_x11_display_error_trap_pop (display) || (format != 32) || (type != XA_ATOM)) { g_object_unref (context); if (data) XFree (data); return GDK_FILTER_REMOVE; } atoms = (Atom *)data; for (i = 0; i < nitems; i++) context->targets = g_list_append (context->targets, GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display, atoms[i]))); XFree (atoms); } else { for (i = 0; i < 3; i++) if (xevent->xclient.data.l[2 + i]) context->targets = g_list_append (context->targets, GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display, xevent->xclient.data.l[2 + i]))); } #ifdef G_ENABLE_DEBUG if (GDK_DEBUG_CHECK (DND)) print_target_list (context->targets); #endif /* G_ENABLE_DEBUG */ xdnd_manage_source_filter (context, context->source_window, TRUE); xdnd_read_actions (context_x11); event->dnd.type = GDK_DRAG_ENTER; event->dnd.context = context; gdk_event_set_device (event, gdk_drag_context_get_device (context)); g_object_ref (context); display_x11->current_dest_drag = context; return GDK_FILTER_TRANSLATE; } static GdkFilterReturn xdnd_leave_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; guint32 source_window = xevent->xclient.data.l[0]; GdkDisplay *display; GdkX11Display *display_x11; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ GDK_NOTE (DND, g_message ("XdndLeave: source_window: %#x", source_window)); display = GDK_WINDOW_DISPLAY (event->any.window); display_x11 = GDK_X11_DISPLAY (display); xdnd_precache_atoms (display); if ((display_x11->current_dest_drag != NULL) && (display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_XDND) && (GDK_WINDOW_XID (display_x11->current_dest_drag->source_window) == source_window)) { event->dnd.type = GDK_DRAG_LEAVE; /* Pass ownership of context to the event */ event->dnd.context = display_x11->current_dest_drag; gdk_event_set_device (event, gdk_drag_context_get_device (event->dnd.context)); display_x11->current_dest_drag = NULL; return GDK_FILTER_TRANSLATE; } else return GDK_FILTER_REMOVE; } static GdkFilterReturn xdnd_position_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { GdkWindowImplX11 *impl; XEvent *xevent = (XEvent *)xev; guint32 source_window = xevent->xclient.data.l[0]; gint16 x_root = xevent->xclient.data.l[2] >> 16; gint16 y_root = xevent->xclient.data.l[2] & 0xffff; guint32 time = xevent->xclient.data.l[3]; Atom action = xevent->xclient.data.l[4]; GdkDisplay *display; GdkX11Display *display_x11; GdkDragContext *context; GdkX11DragContext *context_x11; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ GDK_NOTE (DND, g_message ("XdndPosition: source_window: %#x position: (%d, %d) time: %d action: %ld", source_window, x_root, y_root, time, action)); display = GDK_WINDOW_DISPLAY (event->any.window); display_x11 = GDK_X11_DISPLAY (display); xdnd_precache_atoms (display); context = display_x11->current_dest_drag; if ((context != NULL) && (context->protocol == GDK_DRAG_PROTO_XDND) && (GDK_WINDOW_XID (context->source_window) == source_window)) { impl = GDK_WINDOW_IMPL_X11 (event->any.window->impl); context_x11 = GDK_X11_DRAG_CONTEXT (context); event->dnd.type = GDK_DRAG_MOTION; event->dnd.context = context; gdk_event_set_device (event, gdk_drag_context_get_device (context)); g_object_ref (context); event->dnd.time = time; context->suggested_action = xdnd_action_from_atom (display, action); if (!context_x11->xdnd_have_actions) context->actions = context->suggested_action; event->dnd.x_root = x_root / impl->window_scale; event->dnd.y_root = y_root / impl->window_scale; context_x11->last_x = x_root / impl->window_scale; context_x11->last_y = y_root / impl->window_scale; return GDK_FILTER_TRANSLATE; } return GDK_FILTER_REMOVE; } static GdkFilterReturn xdnd_drop_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *)xev; guint32 source_window = xevent->xclient.data.l[0]; guint32 time = xevent->xclient.data.l[2]; GdkDisplay *display; GdkX11Display *display_x11; GdkDragContext *context; GdkX11DragContext *context_x11; if (!event->any.window || gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN) return GDK_FILTER_CONTINUE; /* Not for us */ GDK_NOTE (DND, g_message ("XdndDrop: source_window: %#x time: %d", source_window, time)); display = GDK_WINDOW_DISPLAY (event->any.window); display_x11 = GDK_X11_DISPLAY (display); xdnd_precache_atoms (display); context = display_x11->current_dest_drag; if ((context != NULL) && (context->protocol == GDK_DRAG_PROTO_XDND) && (GDK_WINDOW_XID (context->source_window) == source_window)) { context_x11 = GDK_X11_DRAG_CONTEXT (context); event->dnd.type = GDK_DROP_START; event->dnd.context = context; gdk_event_set_device (event, gdk_drag_context_get_device (context)); g_object_ref (context); event->dnd.time = time; event->dnd.x_root = context_x11->last_x; event->dnd.y_root = context_x11->last_y; gdk_x11_window_set_user_time (event->any.window, time); return GDK_FILTER_TRANSLATE; } return GDK_FILTER_REMOVE; } GdkFilterReturn _gdk_x11_dnd_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { XEvent *xevent = (XEvent *) xev; GdkDisplay *display; int i; if (!GDK_IS_X11_WINDOW (event->any.window)) return GDK_FILTER_CONTINUE; if (xevent->type != ClientMessage) return GDK_FILTER_CONTINUE; display = GDK_WINDOW_DISPLAY (event->any.window); for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++) { if (xevent->xclient.message_type != gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name)) continue; return xdnd_filters[i].func (xev, event, data); } return GDK_FILTER_CONTINUE; } /* Source side */ static void gdk_drag_do_leave (GdkX11DragContext *context_x11, guint32 time) { GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11); if (context->dest_window) { switch (context->protocol) { case GDK_DRAG_PROTO_XDND: xdnd_send_leave (context_x11); break; case GDK_DRAG_PROTO_ROOTWIN: case GDK_DRAG_PROTO_MOTIF: case GDK_DRAG_PROTO_WIN32_DROPFILES: case GDK_DRAG_PROTO_OLE2: case GDK_DRAG_PROTO_LOCAL: case GDK_DRAG_PROTO_WAYLAND: case GDK_DRAG_PROTO_NONE: default: break; } g_object_unref (context->dest_window); context->dest_window = NULL; } } static GdkWindow * create_drag_window (GdkDisplay *display) { GdkWindow *window; window = gdk_window_new_popup (display, 0, &(GdkRectangle) { 0, 0, 100, 100 }); gdk_window_set_type_hint (window, GDK_WINDOW_TYPE_HINT_DND); return window; } GdkDragContext * _gdk_x11_window_drag_begin (GdkWindow *window, GdkDevice *device, GList *targets, gint x_root, gint y_root) { GdkDragContext *context; context = (GdkDragContext *) g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL); context->display = gdk_window_get_display (window); context->is_source = TRUE; context->source_window = window; g_object_ref (window); context->targets = g_list_copy (targets); precache_target_list (context); context->actions = 0; gdk_drag_context_set_device (context, device); 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_display(window)); return context; } Window _gdk_x11_display_get_drag_protocol (GdkDisplay *display, Window xid, GdkDragProtocol *protocol, guint *version) { GdkWindow *window; Window retval; base_precache_atoms (display); /* Check for a local drag */ window = gdk_x11_window_lookup_for_display (display, xid); if (window && gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN) { if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL) { *protocol = GDK_DRAG_PROTO_XDND; *version = 5; xdnd_precache_atoms (display); GDK_NOTE (DND, g_message ("Entering local Xdnd window %#x\n", (guint) xid)); return xid; } else if (_gdk_x11_display_is_root_window (display, xid)) { *protocol = GDK_DRAG_PROTO_ROOTWIN; GDK_NOTE (DND, g_message ("Entering root window\n")); return xid; } } else if ((retval = xdnd_check_dest (display, xid, version))) { *protocol = GDK_DRAG_PROTO_XDND; xdnd_precache_atoms (display); GDK_NOTE (DND, g_message ("Entering Xdnd window %#x\n", (guint) xid)); return retval; } else { /* Check if this is a root window */ gboolean rootwin = FALSE; if (_gdk_x11_display_is_root_window (display, (Window) xid)) rootwin = TRUE; if (rootwin) { GDK_NOTE (DND, g_message ("Entering root window\n")); *protocol = GDK_DRAG_PROTO_ROOTWIN; return xid; } } *protocol = GDK_DRAG_PROTO_NONE; return 0; /* a.k.a. None */ } static GdkWindowCache * drag_context_find_window_cache (GdkX11DragContext *context_x11, GdkScreen *screen) { GSList *list; GdkWindowCache *cache; for (list = context_x11->window_caches; list; list = list->next) { cache = list->data; if (cache->screen == screen) return cache; } cache = gdk_window_cache_get (screen); context_x11->window_caches = g_slist_prepend (context_x11->window_caches, cache); return cache; } static GdkWindow * gdk_x11_drag_context_find_window (GdkDragContext *context, GdkWindow *drag_window, GdkScreen *screen, gint x_root, gint y_root, GdkDragProtocol *protocol) { GdkX11Screen *screen_x11 = GDK_X11_SCREEN(screen); GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); GdkWindowCache *window_cache; GdkDisplay *display; Window dest; GdkWindow *dest_window; display = GDK_WINDOW_DISPLAY (context->source_window); window_cache = drag_context_find_window_cache (context_x11, screen); dest = get_client_window_at_coords (window_cache, drag_window && GDK_WINDOW_IS_X11 (drag_window) ? GDK_WINDOW_XID (drag_window) : None, x_root * screen_x11->window_scale, y_root * screen_x11->window_scale); if (context_x11->dest_xid != dest) { Window recipient; context_x11->dest_xid = dest; /* Check if new destination accepts drags, and which protocol */ /* There is some ugliness here. We actually need to pass * _three_ pieces of information to drag_motion - dest_window, * protocol, and the XID of the unproxied window. The first * two are passed explicitly, the third implicitly through * protocol->dest_xid. */ recipient = _gdk_x11_display_get_drag_protocol (display, dest, protocol, &context_x11->version); if (recipient != None) dest_window = gdk_x11_window_foreign_new_for_display (display, recipient); else dest_window = NULL; } else { dest_window = context->dest_window; if (dest_window) g_object_ref (dest_window); *protocol = context->protocol; } 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, GdkDragProtocol protocol, gint x_root, gint y_root, GdkDragAction suggested_action, GdkDragAction possible_actions, guint32 time) { GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); GdkWindowImplX11 *impl; if (context_x11->drag_window) move_drag_window (context, x_root, y_root); context_x11->old_actions = context->actions; context->actions = possible_actions; if (context_x11->old_actions != possible_actions) context_x11->xdnd_actions_set = FALSE; if (protocol == GDK_DRAG_PROTO_XDND && context_x11->version == 0) { /* This ugly hack is necessary since GTK+ doesn't know about * the XDND protocol version, and in particular doesn't know * that gdk_drag_find_window_for_screen() has the side-effect * of setting context_x11->version, and therefore sometimes call * gdk_drag_motion() without a prior call to * gdk_drag_find_window_for_screen(). This happens, e.g. * when GTK+ is proxying DND events to embedded windows. */ if (dest_window) { GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window); xdnd_check_dest (display, GDK_WINDOW_XID (dest_window), &context_x11->version); } } /* When we have a Xdnd target, make sure our XdndActionList * matches the current actions; */ if (protocol == GDK_DRAG_PROTO_XDND && !context_x11->xdnd_actions_set) { if (dest_window) { if (gdk_window_get_window_type (dest_window) == GDK_WINDOW_FOREIGN) xdnd_set_actions (context_x11); else if (context->dest_window == dest_window) { GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window); GdkDragContext *dest_context; dest_context = gdk_drag_context_find (display, FALSE, GDK_WINDOW_XID (context->source_window), GDK_WINDOW_XID (dest_window)); if (dest_context) { dest_context->actions = context->actions; GDK_X11_DRAG_CONTEXT (dest_context)->xdnd_have_actions = TRUE; } } } } if (context->dest_window != dest_window) { GdkEvent *temp_event; /* Send a leave to the last destination */ gdk_drag_do_leave (context_x11, time); context_x11->drag_status = GDK_DRAG_STATUS_DRAG; /* Check if new destination accepts drags, and which protocol */ if (dest_window) { context->dest_window = dest_window; context_x11->drop_xid = context_x11->dest_xid; g_object_ref (context->dest_window); context->protocol = protocol; switch (protocol) { case GDK_DRAG_PROTO_XDND: xdnd_send_enter (context_x11); break; case GDK_DRAG_PROTO_ROOTWIN: case GDK_DRAG_PROTO_MOTIF: case GDK_DRAG_PROTO_WIN32_DROPFILES: case GDK_DRAG_PROTO_OLE2: case GDK_DRAG_PROTO_LOCAL: case GDK_DRAG_PROTO_WAYLAND: case GDK_DRAG_PROTO_NONE: default: break; } context_x11->old_action = suggested_action; context->suggested_action = suggested_action; context_x11->old_actions = possible_actions; } else { context->dest_window = NULL; context_x11->drop_xid = None; context->action = 0; } /* Push a status event, to let the client know that * the drag changed */ temp_event = gdk_event_new (GDK_DRAG_STATUS); temp_event->dnd.window = g_object_ref (context->source_window); /* We use this to signal a synthetic status. Perhaps * we should use an extra field... */ temp_event->dnd.send_event = TRUE; temp_event->dnd.context = g_object_ref (context); temp_event->dnd.time = time; gdk_event_set_device (temp_event, gdk_drag_context_get_device (context)); gdk_event_put (temp_event); gdk_event_free (temp_event); } else { context_x11->old_action = context->suggested_action; context->suggested_action = suggested_action; } /* Send a drag-motion event */ context_x11->last_x = x_root; context_x11->last_y = y_root; if (context->dest_window) { impl = GDK_WINDOW_IMPL_X11 (context->dest_window->impl); if (context_x11->drag_status == GDK_DRAG_STATUS_DRAG) { switch (context->protocol) { case GDK_DRAG_PROTO_XDND: xdnd_send_motion (context_x11, x_root * impl->window_scale, y_root * impl->window_scale, suggested_action, time); break; case GDK_DRAG_PROTO_ROOTWIN: { GdkEvent *temp_event; /* GTK+ traditionally has used application/x-rootwin-drop, * but the XDND spec specifies x-rootwindow-drop. */ GdkAtom target1 = gdk_atom_intern_static_string ("application/x-rootwindow-drop"); GdkAtom target2 = gdk_atom_intern_static_string ("application/x-rootwin-drop"); if (g_list_find (context->targets, GDK_ATOM_TO_POINTER (target1)) || g_list_find (context->targets, GDK_ATOM_TO_POINTER (target2))) context->action = context->suggested_action; else context->action = 0; temp_event = gdk_event_new (GDK_DRAG_STATUS); temp_event->dnd.window = g_object_ref (context->source_window); temp_event->dnd.send_event = FALSE; temp_event->dnd.context = g_object_ref (context); temp_event->dnd.time = time; gdk_event_set_device (temp_event, gdk_drag_context_get_device (context)); gdk_event_put (temp_event); gdk_event_free (temp_event); } break; case GDK_DRAG_PROTO_MOTIF: case GDK_DRAG_PROTO_WIN32_DROPFILES: case GDK_DRAG_PROTO_OLE2: case GDK_DRAG_PROTO_LOCAL: case GDK_DRAG_PROTO_WAYLAND: case GDK_DRAG_PROTO_NONE: g_warning ("Invalid drag protocol %u in gdk_drag_motion()", context->protocol); break; default: break; } } else return TRUE; } return FALSE; } static void gdk_x11_drag_context_drag_abort (GdkDragContext *context, guint32 time) { gdk_drag_do_leave (GDK_X11_DRAG_CONTEXT (context), time); } static void gdk_x11_drag_context_drag_drop (GdkDragContext *context, guint32 time) { GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); if (context->dest_window) { switch (context->protocol) { case GDK_DRAG_PROTO_XDND: xdnd_send_drop (context_x11, time); break; case GDK_DRAG_PROTO_ROOTWIN: g_warning ("Drops for GDK_DRAG_PROTO_ROOTWIN must be handled internally"); break; case GDK_DRAG_PROTO_NONE: g_warning ("GDK_DRAG_PROTO_NONE is not valid in gdk_drag_drop()"); break; case GDK_DRAG_PROTO_MOTIF: case GDK_DRAG_PROTO_WIN32_DROPFILES: case GDK_DRAG_PROTO_OLE2: case GDK_DRAG_PROTO_LOCAL: case GDK_DRAG_PROTO_WAYLAND: default: g_warning ("Drag protocol %u is not valid in gdk_drag_drop()", context->protocol); break; } } } /* Destination side */ static void gdk_x11_drag_context_drag_status (GdkDragContext *context, GdkDragAction action, guint32 time_) { GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); XEvent xev; GdkDisplay *display; display = GDK_WINDOW_DISPLAY (context->source_window); context->action = action; if (context->protocol == GDK_DRAG_PROTO_XDND) { xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndStatus"); xev.xclient.format = 32; xev.xclient.window = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window); xev.xclient.data.l[1] = (action != 0) ? (2 | 1) : 0; xev.xclient.data.l[2] = 0; xev.xclient.data.l[3] = 0; xev.xclient.data.l[4] = xdnd_action_to_atom (display, action); if (!xdnd_send_xevent (context_x11, context->source_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->source_window))); } } context_x11->old_action = action; } static void gdk_x11_drag_context_drop_reply (GdkDragContext *context, gboolean accepted, guint32 time_) { } static void gdk_x11_drag_context_drop_finish (GdkDragContext *context, gboolean success, guint32 time) { if (context->protocol == GDK_DRAG_PROTO_XDND) { GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window); XEvent xev; xev.xclient.type = ClientMessage; xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndFinished"); xev.xclient.format = 32; xev.xclient.window = GDK_WINDOW_XID (context->source_window); xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window); if (success) { xev.xclient.data.l[1] = 1; xev.xclient.data.l[2] = xdnd_action_to_atom (display, context->action); } else { xev.xclient.data.l[1] = 0; xev.xclient.data.l[2] = None; } xev.xclient.data.l[3] = 0; xev.xclient.data.l[4] = 0; if (!xdnd_send_xevent (GDK_X11_DRAG_CONTEXT (context), context->source_window, FALSE, &xev)) { GDK_NOTE (DND, g_message ("Send event to %lx failed", GDK_WINDOW_XID (context->source_window))); } } } void _gdk_x11_window_register_dnd (GdkWindow *window) { static const gulong xdnd_version = 5; GdkDisplay *display = gdk_window_get_display (window); g_return_if_fail (window != NULL); base_precache_atoms (display); if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL) return; else g_object_set_data (G_OBJECT (window), "gdk-dnd-registered", GINT_TO_POINTER (TRUE)); /* Set XdndAware */ /* The property needs to be of type XA_ATOM, not XA_INTEGER. Blech */ XChangeProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window), gdk_x11_get_xatom_by_name_for_display (display, "XdndAware"), XA_ATOM, 32, PropModeReplace, (guchar *)&xdnd_version, 1); } static GdkAtom gdk_x11_drag_context_get_selection (GdkDragContext *context) { if (context->protocol == GDK_DRAG_PROTO_XDND) return gdk_atom_intern_static_string ("XdndSelection"); else return GDK_NONE; } static gboolean gdk_x11_drag_context_drop_status (GdkDragContext *context) { return ! GDK_X11_DRAG_CONTEXT (context)->drop_failed; } static GdkWindow * gdk_x11_drag_context_get_drag_window (GdkDragContext *context) { return GDK_X11_DRAG_CONTEXT (context)->drag_window; } static void gdk_x11_drag_context_set_hotspot (GdkDragContext *context, gint hot_x, gint hot_y) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (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 ease_out_cubic (double t) { double p = t - 1; return p * p * p + 1; } #define ANIM_TIME 500000 /* half a second */ typedef struct _GdkDragAnim GdkDragAnim; struct _GdkDragAnim { GdkX11DragContext *context; GdkFrameClock *frame_clock; gint64 start_time; }; static void gdk_drag_anim_destroy (GdkDragAnim *anim) { g_object_unref (anim->context); g_slice_free (GdkDragAnim, anim); } static gboolean gdk_drag_anim_timeout (gpointer data) { GdkDragAnim *anim = data; GdkX11DragContext *context = anim->context; GdkFrameClock *frame_clock = anim->frame_clock; gint64 current_time; double f; double t; if (!frame_clock) return G_SOURCE_REMOVE; current_time = gdk_frame_clock_get_frame_time (frame_clock); f = (current_time - anim->start_time) / (double) ANIM_TIME; if (f >= 1.0) return G_SOURCE_REMOVE; t = ease_out_cubic (f); gdk_window_show (context->drag_window); gdk_window_move (context->drag_window, context->last_x + (context->start_x - context->last_x) * t, context->last_y + (context->start_y - context->last_y) * t); gdk_window_set_opacity (context->drag_window, 1.0 - f); return G_SOURCE_CONTINUE; } static void gdk_x11_drag_context_drop_done (GdkDragContext *context, gboolean success) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); GdkDragAnim *anim; cairo_surface_t *win_surface; cairo_surface_t *surface; cairo_t *cr; guint id; if (success) { gdk_window_hide (x11_context->drag_window); return; } win_surface = _gdk_window_ref_cairo_surface (x11_context->drag_window); surface = gdk_window_create_similar_surface (x11_context->drag_window, cairo_surface_get_content (win_surface), gdk_window_get_width (x11_context->drag_window), gdk_window_get_height (x11_context->drag_window)); cr = cairo_create (surface); cairo_set_source_surface (cr, win_surface, 0, 0); cairo_paint (cr); cairo_destroy (cr); cairo_surface_destroy (win_surface); /* pattern = cairo_pattern_create_for_surface (surface); gdk_window_set_background_pattern (x11_context->drag_window, pattern); cairo_pattern_destroy (pattern); */ cairo_surface_destroy (surface); anim = g_slice_new0 (GdkDragAnim); anim->context = g_object_ref (x11_context); anim->frame_clock = gdk_window_get_frame_clock (x11_context->drag_window); anim->start_time = gdk_frame_clock_get_frame_time (anim->frame_clock); id = gdk_threads_add_timeout_full (G_PRIORITY_DEFAULT, 17, gdk_drag_anim_timeout, anim, (GDestroyNotify) gdk_drag_anim_destroy); g_source_set_name_by_id (id, "[gtk+] gdk_drag_anim_timeout"); } static gboolean drag_context_grab (GdkDragContext *context) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); GdkDevice *device = gdk_drag_context_get_device (context); GdkSeatCapabilities capabilities; GdkWindow *root; GdkSeat *seat; gint keycode, i; GdkCursor *cursor; if (!x11_context->ipc_window) return FALSE; root = gdk_screen_get_root_window (gdk_window_get_screen (x11_context->ipc_window)); seat = gdk_device_get_seat (gdk_drag_context_get_device (context)); #ifdef XINPUT_2 if (GDK_IS_X11_DEVICE_XI2 (device)) capabilities = GDK_SEAT_CAPABILITY_ALL_POINTING; else #endif capabilities = GDK_SEAT_CAPABILITY_ALL; cursor = gdk_drag_get_cursor (context, x11_context->current_action); g_set_object (&x11_context->cursor, cursor); if (gdk_seat_grab (seat, x11_context->ipc_window, capabilities, FALSE, x11_context->cursor, NULL, NULL, NULL) != GDK_GRAB_SUCCESS) return FALSE; g_set_object (&x11_context->grab_seat, seat); gdk_error_trap_push (); for (i = 0; i < G_N_ELEMENTS (grab_keys); ++i) { keycode = XKeysymToKeycode (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), grab_keys[i].keysym); if (keycode == NoSymbol) continue; #ifdef XINPUT_2 if (GDK_IS_X11_DEVICE_XI2 (device)) { gint deviceid = gdk_x11_device_get_id (gdk_seat_get_keyboard (seat)); unsigned char mask[XIMaskLen(XI_LASTEVENT)]; XIGrabModifiers mods; XIEventMask evmask; gint num_mods; memset (mask, 0, sizeof (mask)); XISetMask (mask, XI_KeyPress); XISetMask (mask, XI_KeyRelease); evmask.deviceid = deviceid; evmask.mask_len = sizeof (mask); evmask.mask = mask; num_mods = 1; mods.modifiers = grab_keys[i].modifiers; XIGrabKeycode (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), deviceid, keycode, GDK_WINDOW_XID (root), GrabModeAsync, GrabModeAsync, False, &evmask, num_mods, &mods); } else #endif { XGrabKey (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), keycode, grab_keys[i].modifiers, GDK_WINDOW_XID (root), FALSE, GrabModeAsync, GrabModeAsync); } } return TRUE; } static void drag_context_ungrab (GdkDragContext *context) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); GdkDevice *keyboard; GdkWindow *root; gint keycode, i; if (!x11_context->grab_seat) return; gdk_seat_ungrab (x11_context->grab_seat); keyboard = gdk_seat_get_keyboard (x11_context->grab_seat); root = gdk_screen_get_root_window (gdk_window_get_screen (x11_context->ipc_window)); g_clear_object (&x11_context->grab_seat); for (i = 0; i < G_N_ELEMENTS (grab_keys); ++i) { keycode = XKeysymToKeycode (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), grab_keys[i].keysym); if (keycode == NoSymbol) continue; #ifdef XINPUT_2 if (GDK_IS_X11_DEVICE_XI2 (keyboard)) { XIGrabModifiers mods; gint num_mods; num_mods = 1; mods.modifiers = grab_keys[i].modifiers; XIUngrabKeycode (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), gdk_x11_device_get_id (keyboard), keycode, GDK_WINDOW_XID (root), num_mods, &mods); } else #endif /* XINPUT_2 */ { XUngrabKey (GDK_WINDOW_XDISPLAY (x11_context->ipc_window), keycode, grab_keys[i].modifiers, GDK_WINDOW_XID (root)); } } } static gboolean gdk_x11_drag_context_manage_dnd (GdkDragContext *context, GdkWindow *ipc_window, GdkDragAction actions) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); if (x11_context->ipc_window) return FALSE; context->protocol = GDK_DRAG_PROTO_XDND; x11_context->ipc_window = g_object_ref (ipc_window); if (drag_context_grab (context)) { x11_context->actions = actions; move_drag_window (context, x11_context->start_x, x11_context->start_y); return TRUE; } else { g_clear_object (&x11_context->ipc_window); return FALSE; } } static void gdk_x11_drag_context_set_cursor (GdkDragContext *context, GdkCursor *cursor) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); if (!g_set_object (&x11_context->cursor, cursor)) return; if (x11_context->grab_seat) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gdk_device_grab (gdk_seat_get_pointer (x11_context->grab_seat), x11_context->ipc_window, GDK_OWNERSHIP_APPLICATION, FALSE, GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, cursor, GDK_CURRENT_TIME); G_GNUC_END_IGNORE_DEPRECATIONS; } } static void gdk_x11_drag_context_cancel (GdkDragContext *context, GdkDragCancelReason reason) { drag_context_ungrab (context); gdk_drag_drop_done (context, FALSE); } static void gdk_x11_drag_context_drop_performed (GdkDragContext *context, guint32 time_) { gdk_drag_drop (context, time_); drag_context_ungrab (context); } #define BIG_STEP 20 #define SMALL_STEP 1 static void gdk_drag_get_current_actions (GdkModifierType state, gint button, GdkDragAction actions, GdkDragAction *suggested_action, GdkDragAction *possible_actions) { *suggested_action = 0; *possible_actions = 0; if ((button == GDK_BUTTON_MIDDLE || button == GDK_BUTTON_SECONDARY) && (actions & GDK_ACTION_ASK)) { *suggested_action = GDK_ACTION_ASK; *possible_actions = actions; } else if (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) { if ((state & GDK_SHIFT_MASK) && (state & GDK_CONTROL_MASK)) { if (actions & GDK_ACTION_LINK) { *suggested_action = GDK_ACTION_LINK; *possible_actions = GDK_ACTION_LINK; } } else if (state & GDK_CONTROL_MASK) { if (actions & GDK_ACTION_COPY) { *suggested_action = GDK_ACTION_COPY; *possible_actions = GDK_ACTION_COPY; } } else { if (actions & GDK_ACTION_MOVE) { *suggested_action = GDK_ACTION_MOVE; *possible_actions = GDK_ACTION_MOVE; } } } else { *possible_actions = actions; if ((state & (GDK_MOD1_MASK)) && (actions & GDK_ACTION_ASK)) *suggested_action = GDK_ACTION_ASK; else if (actions & GDK_ACTION_COPY) *suggested_action = GDK_ACTION_COPY; else if (actions & GDK_ACTION_MOVE) *suggested_action = GDK_ACTION_MOVE; else if (actions & GDK_ACTION_LINK) *suggested_action = GDK_ACTION_LINK; } } static void gdk_drag_update (GdkDragContext *context, gdouble x_root, gdouble y_root, GdkModifierType mods, guint32 evtime) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); GdkDragAction action, possible_actions; GdkWindow *dest_window; GdkDragProtocol protocol; gdk_drag_get_current_actions (mods, GDK_BUTTON_PRIMARY, x11_context->actions, &action, &possible_actions); gdk_drag_find_window_for_screen (context, x11_context->drag_window, gdk_display_get_default_screen (gdk_display_get_default ()), x_root, y_root, &dest_window, &protocol); gdk_drag_motion (context, dest_window, protocol, x_root, y_root, action, possible_actions, evtime); } static gboolean gdk_dnd_handle_motion_event (GdkDragContext *context, const GdkEventMotion *event) { GdkModifierType state; if (!gdk_event_get_state ((GdkEvent *) event, &state)) return FALSE; gdk_drag_update (context, event->x_root, event->y_root, state, gdk_event_get_time ((GdkEvent *) event)); return TRUE; } static gboolean gdk_dnd_handle_key_event (GdkDragContext *context, const GdkEventKey *event) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); GdkModifierType state; GdkWindow *root_window; GdkDevice *pointer; gint dx, dy; dx = dy = 0; state = event->state; pointer = gdk_device_get_associated_device (gdk_event_get_device ((GdkEvent *) event)); if (event->type == GDK_KEY_PRESS) { switch (event->keyval) { case GDK_KEY_Escape: gdk_drag_context_cancel (context, GDK_DRAG_CANCEL_USER_CANCELLED); return TRUE; case GDK_KEY_space: case GDK_KEY_Return: case GDK_KEY_ISO_Enter: case GDK_KEY_KP_Enter: case GDK_KEY_KP_Space: if ((gdk_drag_context_get_selected_action (context) != 0) && (gdk_drag_context_get_dest_window (context) != NULL)) { g_signal_emit_by_name (context, "drop-performed", gdk_event_get_time ((GdkEvent *) event)); } else gdk_drag_context_cancel (context, GDK_DRAG_CANCEL_NO_TARGET); return TRUE; case GDK_KEY_Up: case GDK_KEY_KP_Up: dy = (state & GDK_MOD1_MASK) ? -BIG_STEP : -SMALL_STEP; break; case GDK_KEY_Down: case GDK_KEY_KP_Down: dy = (state & GDK_MOD1_MASK) ? BIG_STEP : SMALL_STEP; break; case GDK_KEY_Left: case GDK_KEY_KP_Left: dx = (state & GDK_MOD1_MASK) ? -BIG_STEP : -SMALL_STEP; break; case GDK_KEY_Right: case GDK_KEY_KP_Right: dx = (state & GDK_MOD1_MASK) ? BIG_STEP : SMALL_STEP; break; default: break; } } /* The state is not yet updated in the event, so we need * to query it here. We could use XGetModifierMapping, but * that would be overkill. */ root_window = gdk_screen_get_root_window (gdk_window_get_screen (x11_context->ipc_window)); gdk_window_get_device_position (root_window, pointer, NULL, NULL, &state); if (dx != 0 || dy != 0) { x11_context->last_x += dx; x11_context->last_y += dy; gdk_device_warp (pointer, gdk_window_get_screen (x11_context->ipc_window), x11_context->last_x, x11_context->last_y); } gdk_drag_update (context, x11_context->last_x, x11_context->last_y, state, gdk_event_get_time ((GdkEvent *) event)); return TRUE; } static gboolean gdk_dnd_handle_grab_broken_event (GdkDragContext *context, const GdkEventGrabBroken *event) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); /* Don't cancel if we break the implicit grab from the initial button_press. * Also, don't cancel if we re-grab on the widget or on our IPC window, for * example, when changing the drag cursor. */ if (event->implicit || event->grab_window == x11_context->drag_window || event->grab_window == x11_context->ipc_window) return FALSE; if (gdk_event_get_device ((GdkEvent *) event) != gdk_drag_context_get_device (context)) return FALSE; gdk_drag_context_cancel (context, GDK_DRAG_CANCEL_ERROR); return TRUE; } static gboolean gdk_dnd_handle_button_event (GdkDragContext *context, const GdkEventButton *event) { #if 0 /* FIXME: Check the button matches */ if (event->button != x11_context->button) return FALSE; #endif if ((gdk_drag_context_get_selected_action (context) != 0) && (gdk_drag_context_get_dest_window (context) != NULL)) { g_signal_emit_by_name (context, "drop-performed", gdk_event_get_time ((GdkEvent *) event)); } else gdk_drag_context_cancel (context, GDK_DRAG_CANCEL_NO_TARGET); return TRUE; } static gboolean gdk_dnd_handle_drag_status (GdkDragContext *context, const GdkEventDND *event) { GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context); GdkDragAction action; if (context != event->context) return FALSE; action = gdk_drag_context_get_selected_action (context); if (action != context_x11->current_action) { context_x11->current_action = action; g_signal_emit_by_name (context, "action-changed", action); } return TRUE; } static gboolean gdk_dnd_handle_drop_finished (GdkDragContext *context, const GdkEventDND *event) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); if (context != event->context) return FALSE; g_signal_emit_by_name (context, "dnd-finished"); gdk_drag_drop_done (context, !x11_context->drop_failed); return TRUE; } gboolean gdk_x11_drag_context_handle_event (GdkDragContext *context, const GdkEvent *event) { GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (context); if (!context->is_source) return FALSE; if (!x11_context->grab_seat && event->type != GDK_DROP_FINISHED) return FALSE; switch ((guint) event->type) { case GDK_MOTION_NOTIFY: return gdk_dnd_handle_motion_event (context, &event->motion); case GDK_BUTTON_RELEASE: return gdk_dnd_handle_button_event (context, &event->button); case GDK_KEY_PRESS: case GDK_KEY_RELEASE: return gdk_dnd_handle_key_event (context, &event->key); case GDK_GRAB_BROKEN: return gdk_dnd_handle_grab_broken_event (context, &event->grab_broken); case GDK_DRAG_STATUS: return gdk_dnd_handle_drag_status (context, &event->dnd); case GDK_DROP_FINISHED: return gdk_dnd_handle_drop_finished (context, &event->dnd); default: break; } return FALSE; } void gdk_x11_drag_context_action_changed (GdkDragContext *context, GdkDragAction action) { GdkCursor *cursor; cursor = gdk_drag_get_cursor (context, action); gdk_drag_context_set_cursor (context, cursor); }