diff options
Diffstat (limited to 'src/nautilus-list-view-dnd.c')
| -rw-r--r-- | src/nautilus-list-view-dnd.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/src/nautilus-list-view-dnd.c b/src/nautilus-list-view-dnd.c new file mode 100644 index 0000000..2191006 --- /dev/null +++ b/src/nautilus-list-view-dnd.c @@ -0,0 +1,305 @@ +/* nautilus-list-view-dnd.c + * + * Copyright (C) 2015 Carlos Soriano <csoriano@gnome.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <config.h> + +#include "nautilus-list-view-dnd.h" +#include "nautilus-list-view-private.h" + +static GtkTargetList *source_target_list = NULL; + +static void +drag_info_data_free (NautilusListView *list_view); + +static void +drag_data_get_callback (GtkWidget *widget, + GdkDragContext *context, + GtkSelectionData *selection_data, + guint info, + guint time, + gpointer user_data) +{ + GtkTreeView *tree_view; + GtkTreeModel *model; + NautilusListView *list_view; + + tree_view = GTK_TREE_VIEW (widget); + list_view = NAUTILUS_LIST_VIEW (user_data); + + model = gtk_tree_view_get_model (tree_view); + + if (model == NULL) + { + return; + } + + if (list_view->details->drag_source_info == NULL || + list_view->details->drag_source_info->selection_cache == NULL) + { + return; + } + + nautilus_drag_drag_data_get_from_cache (list_view->details->drag_source_info->selection_cache, + context, selection_data, info, time); +} + +static cairo_surface_t * +get_drag_surface (NautilusListView *view) +{ + GtkTreeModel *model; + GtkTreePath *path; + GtkTreeIter iter; + cairo_surface_t *ret; + GdkRectangle cell_area; + + ret = NULL; + + if (gtk_tree_view_get_path_at_pos (view->details->tree_view, + view->details->drag_x, + view->details->drag_y, + &path, NULL, NULL, NULL)) + { + model = gtk_tree_view_get_model (view->details->tree_view); + gtk_tree_model_get_iter (model, &iter, path); + gtk_tree_model_get (model, &iter, + nautilus_list_model_get_column_id_from_zoom_level (view->details->zoom_level), + &ret, + -1); + } + + gtk_tree_view_get_cell_area (view->details->tree_view, + path, + view->details->file_name_column, + &cell_area); + + gtk_tree_path_free (path); + + return ret; +} + +/* iteration glue struct */ +typedef struct +{ + NautilusListView *view; + NautilusDragEachSelectedItemDataGet iteratee; + gpointer iteratee_data; +} ListGetDataBinderContext; + +static void +item_get_data_binder (GtkTreeModel *model, + GtkTreePath *path, + GtkTreeIter *iter, + gpointer data) +{ + ListGetDataBinderContext *context = data; + NautilusFile *file; + GtkTreeView *treeview; + GtkTreeViewColumn *column; + GdkRectangle cell_area; + int drag_begin_y = 0; + char *uri; + + treeview = nautilus_list_model_get_drag_view (context->view->details->model, + NULL, + &drag_begin_y); + column = gtk_tree_view_get_column (treeview, 0); + + file = nautilus_list_model_file_for_path (NAUTILUS_LIST_MODEL (model), path); + if (file == NULL) + { + return; + } + + gtk_tree_view_get_cell_area (treeview, + path, + column, + &cell_area); + + uri = nautilus_file_get_activation_uri (file); + + nautilus_file_unref (file); + + /* pass the uri, mouse-relative x/y and icon width/height */ + context->iteratee (uri, + 0, + cell_area.y - drag_begin_y, + cell_area.width, + cell_area.height, + context->iteratee_data); + + g_free (uri); +} + +static void +each_item_get_data_binder (NautilusDragEachSelectedItemDataGet iteratee, + gpointer iterator_context, + gpointer data) +{ + NautilusListView *view = NAUTILUS_LIST_VIEW (iterator_context); + ListGetDataBinderContext context; + GtkTreeSelection *selection; + + context.view = view; + context.iteratee = iteratee; + context.iteratee_data = data; + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (view->details->tree_view)); + gtk_tree_selection_selected_foreach (selection, item_get_data_binder, &context); +} + +static void +drag_begin_callback (GtkWidget *widget, + GdkDragContext *context, + NautilusListView *view) +{ + cairo_surface_t *surface; + NautilusWindow *window; + GList *dragged_files; + + window = nautilus_files_view_get_window (NAUTILUS_FILES_VIEW (view)); + surface = get_drag_surface (view); + if (surface) + { + gtk_drag_set_icon_surface (context, surface); + cairo_surface_destroy (surface); + } + else + { + gtk_drag_set_icon_default (context); + } + + view->details->drag_button = 0; + view->details->drag_started = TRUE; + + view->details->drag_source_info->selection_cache = nautilus_drag_create_selection_cache (view, + each_item_get_data_binder); + + dragged_files = nautilus_drag_file_list_from_selection_list (view->details->drag_source_info->selection_cache); + if (nautilus_file_list_are_all_folders (dragged_files)) + { + nautilus_window_start_dnd (window, context); + } + g_list_free_full (dragged_files, g_object_unref); +} + +static void +drag_end_callback (GtkWidget *widget, + GdkDragContext *context, + NautilusListView *list_view) +{ + NautilusWindow *window; + + window = nautilus_files_view_get_window (NAUTILUS_FILES_VIEW (list_view)); + + nautilus_window_end_dnd (window, context); + + drag_info_data_free (list_view); +} + +static void +drag_info_data_free (NautilusListView *list_view) +{ + nautilus_drag_destroy_selection_list (list_view->details->drag_source_info->selection_cache); + list_view->details->drag_source_info->selection_cache = NULL; + + g_free (list_view->details->drag_source_info); + list_view->details->drag_source_info = NULL; + + g_signal_handlers_disconnect_by_func (list_view->details->tree_view, drag_begin_callback, list_view); + g_signal_handlers_disconnect_by_func (list_view->details->tree_view, drag_data_get_callback, list_view); + g_signal_handlers_disconnect_by_func (list_view->details->tree_view, drag_end_callback, list_view); +} + +NautilusDragInfo * +nautilus_list_view_dnd_get_drag_source_data (NautilusListView *list_view, + GdkDragContext *context) +{ + GtkTreeView *tree_view; + GtkTreeModel *model; + + tree_view = GTK_TREE_VIEW (list_view->details->tree_view); + + model = gtk_tree_view_get_model (tree_view); + + if (model == NULL) + { + return NULL; + } + + if (list_view->details->drag_source_info == NULL || + list_view->details->drag_source_info->selection_cache == NULL) + { + return NULL; + } + + return list_view->details->drag_source_info; +} + +void +nautilus_list_view_dnd_init (NautilusListView *list_view) +{ + if (list_view->details->drag_source_info != NULL) + { + return; + } + + list_view->details->drag_source_info = g_new0 (NautilusDragInfo, 1); + + g_signal_connect_object (list_view->details->tree_view, "drag-begin", + G_CALLBACK (drag_begin_callback), list_view, 0); + g_signal_connect_object (list_view->details->tree_view, "drag-end", + G_CALLBACK (drag_end_callback), list_view, 0); + g_signal_connect_object (list_view->details->tree_view, "drag-data-get", + G_CALLBACK (drag_data_get_callback), list_view, 0); +} + +void +nautilus_list_view_dnd_drag_begin (NautilusListView *list_view, + gdouble offset_x, + gdouble offset_y, + const GdkEvent *event) +{ + if (list_view->details->drag_button == 0) + { + return; + } + + if (!source_target_list) + { + source_target_list = nautilus_list_model_get_drag_target_list (); + } + + if (gtk_drag_check_threshold (GTK_WIDGET (list_view->details->tree_view), + list_view->details->drag_x, + list_view->details->drag_y, + list_view->details->drag_x + offset_x, + list_view->details->drag_y + offset_y)) + { + guint32 actions; + + actions = GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK | GDK_ACTION_ASK; + list_view->details->drag_source_info->source_actions = actions; + gtk_drag_begin_with_coordinates (GTK_WIDGET (list_view->details->tree_view), + source_target_list, + actions, + list_view->details->drag_button, + (GdkEvent *) event, + -1, + -1); + } +} |