/* * This program 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) version 3. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with the program; if not, see * * * Authors: * Chris Lahey * * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) * */ #include #include #include #include #include #include #include #include "gal-a11y-e-tree.h" #include #include "e-util/e-util.h" #include "misc/e-canvas.h" #include "misc/e-canvas-utils.h" #include "misc/e-canvas-background.h" #include "text/e-text.h" #include "e-table-column-specification.h" #include "e-table-header-item.h" #include "e-table-header.h" #include "e-table-item.h" #include "e-table-sort-info.h" #include "e-table-utils.h" #ifdef E_TREE_USE_TREE_SELECTION #include "e-tree-selection-model.h" #else #include "e-table-selection-model.h" #endif #include "e-tree.h" #include "e-tree-table-adapter.h" #define COLUMN_HEADER_HEIGHT 16 #define d(x) enum { CURSOR_CHANGE, CURSOR_ACTIVATED, SELECTION_CHANGE, DOUBLE_CLICK, RIGHT_CLICK, CLICK, KEY_PRESS, START_DRAG, STATE_CHANGE, WHITE_SPACE_EVENT, CUT_CLIPBOARD, COPY_CLIPBOARD, PASTE_CLIPBOARD, SELECT_ALL, TREE_DRAG_BEGIN, TREE_DRAG_END, TREE_DRAG_DATA_GET, TREE_DRAG_DATA_DELETE, TREE_DRAG_LEAVE, TREE_DRAG_MOTION, TREE_DRAG_DROP, TREE_DRAG_DATA_RECEIVED, LAST_SIGNAL }; enum { PROP_0, PROP_LENGTH_THRESHOLD, PROP_HORIZONTAL_DRAW_GRID, PROP_VERTICAL_DRAW_GRID, PROP_DRAW_FOCUS, PROP_ETTA, PROP_UNIFORM_ROW_HEIGHT, PROP_ALWAYS_SEARCH }; enum { ET_SCROLL_UP = 1 << 0, ET_SCROLL_DOWN = 1 << 1, ET_SCROLL_LEFT = 1 << 2, ET_SCROLL_RIGHT = 1 << 3 }; struct ETreePriv { ETreeModel *model; ETreeTableAdapter *etta; ETableHeader *full_header, *header; guint structure_change_id, expansion_change_id; ETableSortInfo *sort_info; ESorter *sorter; guint sort_info_change_id, group_info_change_id; ESelectionModel *selection; ETableSpecification *spec; ETableSearch *search; ETableCol *current_search_col; guint search_search_id; guint search_accept_id; gint reflow_idle_id; gint scroll_idle_id; gint hover_idle_id; gboolean show_cursor_after_reflow; gint table_model_change_id; gint table_row_change_id; gint table_cell_change_id; gint table_rows_delete_id; GnomeCanvasItem *info_text; guint info_text_resize_id; GnomeCanvas *header_canvas, *table_canvas; GnomeCanvasItem *header_item, *root; GnomeCanvasItem *white_item; GnomeCanvasItem *item; gint length_threshold; /* * Configuration settings */ guint alternating_row_colors : 1; guint horizontal_draw_grid : 1; guint vertical_draw_grid : 1; guint draw_focus : 1; guint row_selection_active : 1; guint horizontal_scrolling : 1; guint scroll_direction : 4; guint do_drag : 1; guint uniform_row_height : 1; guint search_col_set : 1; guint always_search : 1; ECursorMode cursor_mode; gint drop_row; ETreePath drop_path; gint drop_col; GnomeCanvasItem *drop_highlight; gint last_drop_x; gint last_drop_y; gint last_drop_time; GdkDragContext *last_drop_context; gint hover_x; gint hover_y; gint drag_row; ETreePath drag_path; gint drag_col; ETreeDragSourceSite *site; GList *expanded_list; }; static guint et_signals[LAST_SIGNAL] = { 0, }; static void et_grab_focus (GtkWidget *widget); static void et_drag_begin (GtkWidget *widget, GdkDragContext *context, ETree *et); static void et_drag_end (GtkWidget *widget, GdkDragContext *context, ETree *et); static void et_drag_data_get(GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time, ETree *et); static void et_drag_data_delete(GtkWidget *widget, GdkDragContext *context, ETree *et); static void et_drag_leave(GtkWidget *widget, GdkDragContext *context, guint time, ETree *et); static gboolean et_drag_motion(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, ETree *et); static gboolean et_drag_drop(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, ETree *et); static void et_drag_data_received(GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *selection_data, guint info, guint time, ETree *et); static void scroll_off (ETree *et); static void scroll_on (ETree *et, guint scroll_direction); static void hover_off (ETree *et); static void hover_on (ETree *et, gint x, gint y); static void context_destroyed (gpointer data, GObject *ctx); G_DEFINE_TYPE (ETree, e_tree, GTK_TYPE_TABLE) static void et_disconnect_from_etta (ETree *et) { if (et->priv->table_model_change_id != 0) g_signal_handler_disconnect (G_OBJECT (et->priv->etta), et->priv->table_model_change_id); if (et->priv->table_row_change_id != 0) g_signal_handler_disconnect (G_OBJECT (et->priv->etta), et->priv->table_row_change_id); if (et->priv->table_cell_change_id != 0) g_signal_handler_disconnect (G_OBJECT (et->priv->etta), et->priv->table_cell_change_id); if (et->priv->table_rows_delete_id != 0) g_signal_handler_disconnect (G_OBJECT (et->priv->etta), et->priv->table_rows_delete_id); et->priv->table_model_change_id = 0; et->priv->table_row_change_id = 0; et->priv->table_cell_change_id = 0; et->priv->table_rows_delete_id = 0; } static void clear_current_search_col (ETree *et) { et->priv->search_col_set = FALSE; } static ETableCol * current_search_col (ETree *et) { if (!et->priv->search_col_set) { et->priv->current_search_col = e_table_util_calculate_current_search_col (et->priv->header, et->priv->full_header, et->priv->sort_info, et->priv->always_search); et->priv->search_col_set = TRUE; } return et->priv->current_search_col; } static void e_tree_state_change (ETree *et) { g_signal_emit (G_OBJECT (et), et_signals[STATE_CHANGE], 0); } static void change_trigger (GtkObject *object, ETree *et) { e_tree_state_change (et); } static void search_col_change_trigger (GtkObject *object, ETree *et) { clear_current_search_col (et); e_tree_state_change (et); } static void disconnect_header (ETree *e_tree) { if (e_tree->priv->header == NULL) return; if (e_tree->priv->structure_change_id) g_signal_handler_disconnect (G_OBJECT (e_tree->priv->header), e_tree->priv->structure_change_id); if (e_tree->priv->expansion_change_id) g_signal_handler_disconnect (G_OBJECT (e_tree->priv->header), e_tree->priv->expansion_change_id); if (e_tree->priv->sort_info) { if (e_tree->priv->sort_info_change_id) g_signal_handler_disconnect (G_OBJECT (e_tree->priv->sort_info), e_tree->priv->sort_info_change_id); if (e_tree->priv->group_info_change_id) g_signal_handler_disconnect (G_OBJECT (e_tree->priv->sort_info), e_tree->priv->group_info_change_id); g_object_unref(e_tree->priv->sort_info); } g_object_unref(e_tree->priv->header); e_tree->priv->header = NULL; e_tree->priv->sort_info = NULL; } static void connect_header (ETree *e_tree, ETableState *state) { GValue *val = g_new0 (GValue, 1); if (e_tree->priv->header != NULL) disconnect_header (e_tree); e_tree->priv->header = e_table_state_to_header ( GTK_WIDGET(e_tree), e_tree->priv->full_header, state); e_tree->priv->structure_change_id = g_signal_connect ( e_tree->priv->header, "structure_change", G_CALLBACK (search_col_change_trigger), e_tree); e_tree->priv->expansion_change_id = g_signal_connect ( e_tree->priv->header, "expansion_change", G_CALLBACK (change_trigger), e_tree); if (state->sort_info) { e_tree->priv->sort_info = e_table_sort_info_duplicate(state->sort_info); e_table_sort_info_set_can_group (e_tree->priv->sort_info, FALSE); e_tree->priv->sort_info_change_id = g_signal_connect ( e_tree->priv->sort_info, "sort_info_changed", G_CALLBACK (search_col_change_trigger), e_tree); e_tree->priv->group_info_change_id = g_signal_connect ( e_tree->priv->sort_info, "group_info_changed", G_CALLBACK (search_col_change_trigger), e_tree); } else e_tree->priv->sort_info = NULL; g_value_init (val, G_TYPE_OBJECT); g_value_set_object (val, e_tree->priv->sort_info); g_object_set_property (G_OBJECT(e_tree->priv->header), "sort_info", val); g_free (val); } static void et_dispose (GObject *object) { ETree *et = E_TREE (object); if (et->priv) { if (et->priv->search) { if (et->priv->search_search_id) g_signal_handler_disconnect (et->priv->search, et->priv->search_search_id); if (et->priv->search_accept_id) g_signal_handler_disconnect (et->priv->search, et->priv->search_accept_id); g_object_unref (et->priv->search); } if (et->priv->reflow_idle_id) g_source_remove(et->priv->reflow_idle_id); et->priv->reflow_idle_id = 0; scroll_off (et); hover_off (et); g_list_foreach ( et->priv->expanded_list, (GFunc) g_free, NULL); g_list_free (et->priv->expanded_list); et_disconnect_from_etta (et); g_object_unref (et->priv->etta); g_object_unref (et->priv->model); g_object_unref (et->priv->full_header); disconnect_header (et); g_object_unref (et->priv->selection); if (et->priv->spec) g_object_unref (et->priv->spec); et->priv->spec = NULL; if (et->priv->sorter) g_object_unref (et->priv->sorter); et->priv->sorter = NULL; if (et->priv->header_canvas) gtk_widget_destroy (GTK_WIDGET (et->priv->header_canvas)); et->priv->header_canvas = NULL; if (et->priv->site) e_tree_drag_source_unset (et); if (et->priv->last_drop_context) g_object_weak_unref (G_OBJECT(et->priv->last_drop_context), context_destroyed, et); et->priv->last_drop_context = NULL; if (et->priv->info_text) gtk_object_destroy (GTK_OBJECT (et->priv->info_text)); et->priv->info_text = NULL; et->priv->info_text_resize_id = 0; gtk_widget_destroy (GTK_WIDGET (et->priv->table_canvas)); g_free(et->priv); et->priv = NULL; } if (G_OBJECT_CLASS (e_tree_parent_class)->dispose) G_OBJECT_CLASS (e_tree_parent_class)->dispose (object); } static void et_unrealize (GtkWidget *widget) { scroll_off (E_TREE (widget)); hover_off (E_TREE (widget)); if (GTK_WIDGET_CLASS (e_tree_parent_class)->unrealize) GTK_WIDGET_CLASS (e_tree_parent_class)->unrealize (widget); } typedef struct { ETree *et; gchar *string; } SearchSearchStruct; static gboolean search_search_callback (ETreeModel *model, ETreePath path, gpointer data) { SearchSearchStruct *cb_data = data; gconstpointer value; ETableCol *col = current_search_col (cb_data->et); value = e_tree_model_value_at ( model, path, cb_data->et->priv->current_search_col->col_idx); return col->search (value, cb_data->string); } static gboolean et_search_search (ETableSearch *search, gchar *string, ETableSearchFlags flags, ETree *et) { ETreePath cursor; ETreePath found; SearchSearchStruct cb_data; ETableCol *col = current_search_col (et); if (col == NULL) return FALSE; cb_data.et = et; cb_data.string = string; cursor = e_tree_get_cursor (et); if (cursor && (flags & E_TABLE_SEARCH_FLAGS_CHECK_CURSOR_FIRST)) { gconstpointer value; value = e_tree_model_value_at (et->priv->model, cursor, col->col_idx); if (col->search (value, string)) { return TRUE; } } found = e_tree_model_node_find ( et->priv->model, cursor, NULL, E_TREE_FIND_NEXT_FORWARD, search_search_callback, &cb_data); if (found == NULL) found = e_tree_model_node_find ( et->priv->model, NULL, cursor, E_TREE_FIND_NEXT_FORWARD, search_search_callback, &cb_data); if (found && found != cursor) { gint model_row; e_tree_table_adapter_show_node (et->priv->etta, found); model_row = e_tree_table_adapter_row_of_node (et->priv->etta, found); e_selection_model_select_as_key_press ( E_SELECTION_MODEL (et->priv->selection), model_row, col->col_idx, GDK_CONTROL_MASK); return TRUE; } else if (cursor && !(flags & E_TABLE_SEARCH_FLAGS_CHECK_CURSOR_FIRST)) { gconstpointer value; value = e_tree_model_value_at (et->priv->model, cursor, col->col_idx); return col->search (value, string); } else return FALSE; } static void et_search_accept (ETableSearch *search, ETree *et) { ETableCol *col = current_search_col (et); gint cursor; if (col == NULL) return; g_object_get (et->priv->selection, "cursor_row", &cursor, NULL); e_selection_model_select_as_key_press ( E_SELECTION_MODEL (et->priv->selection), cursor, col->col_idx, 0); } static void e_tree_init (ETree *e_tree) { gtk_widget_set_can_focus (GTK_WIDGET (e_tree), TRUE); gtk_table_set_homogeneous (GTK_TABLE (e_tree), FALSE); e_tree->priv = g_new(ETreePriv, 1); e_tree->priv->model = NULL; e_tree->priv->etta = NULL; e_tree->priv->full_header = NULL; e_tree->priv->header = NULL; e_tree->priv->structure_change_id = 0; e_tree->priv->expansion_change_id = 0; e_tree->priv->sort_info_change_id = 0; e_tree->priv->group_info_change_id = 0; e_tree->priv->sort_info = NULL; e_tree->priv->sorter = NULL; e_tree->priv->reflow_idle_id = 0; e_tree->priv->scroll_idle_id = 0; e_tree->priv->hover_idle_id = 0; e_tree->priv->show_cursor_after_reflow = FALSE; e_tree->priv->table_model_change_id = 0; e_tree->priv->table_row_change_id = 0; e_tree->priv->table_cell_change_id = 0; e_tree->priv->table_rows_delete_id = 0; e_tree->priv->alternating_row_colors = 1; e_tree->priv->horizontal_draw_grid = 1; e_tree->priv->vertical_draw_grid = 1; e_tree->priv->draw_focus = 1; e_tree->priv->cursor_mode = E_CURSOR_SIMPLE; e_tree->priv->length_threshold = 200; e_tree->priv->uniform_row_height = FALSE; e_tree->priv->row_selection_active = FALSE; e_tree->priv->horizontal_scrolling = FALSE; e_tree->priv->scroll_direction = 0; e_tree->priv->drop_row = -1; e_tree->priv->drop_path = NULL; e_tree->priv->drop_col = -1; e_tree->priv->drop_highlight = NULL; e_tree->priv->last_drop_x = 0; e_tree->priv->last_drop_y = 0; e_tree->priv->last_drop_time = 0; e_tree->priv->last_drop_context = NULL; e_tree->priv->hover_x = 0; e_tree->priv->hover_y = 0; e_tree->priv->drag_row = -1; e_tree->priv->drag_path = NULL; e_tree->priv->drag_col = -1; e_tree->priv->expanded_list = NULL; e_tree->priv->site = NULL; e_tree->priv->do_drag = FALSE; #ifdef E_TREE_USE_TREE_SELECTION e_tree->priv->selection = E_SELECTION_MODEL (e_tree_selection_model_new ()); #else e_tree->priv->selection = E_SELECTION_MODEL (e_table_selection_model_new ()); #endif e_tree->priv->spec = NULL; e_tree->priv->info_text = NULL; e_tree->priv->info_text_resize_id = 0; e_tree->priv->header_canvas = NULL; e_tree->priv->table_canvas = NULL; e_tree->priv->header_item = NULL; e_tree->priv->root = NULL; e_tree->priv->white_item = NULL; e_tree->priv->item = NULL; e_tree->priv->search = e_table_search_new(); e_tree->priv->search_search_id = g_signal_connect (G_OBJECT (e_tree->priv->search), "search", G_CALLBACK (et_search_search), e_tree); e_tree->priv->search_accept_id = g_signal_connect (G_OBJECT (e_tree->priv->search), "accept", G_CALLBACK (et_search_accept), e_tree); e_tree->priv->current_search_col = NULL; e_tree->priv->search_col_set = FALSE; e_tree->priv->always_search = g_getenv ("GAL_ALWAYS_SEARCH") ? TRUE : FALSE; } /* Grab_focus handler for the ETree */ static void et_grab_focus (GtkWidget *widget) { ETree *e_tree; e_tree = E_TREE (widget); gtk_widget_grab_focus (GTK_WIDGET (e_tree->priv->table_canvas)); } /* Focus handler for the ETree */ static gint et_focus (GtkWidget *container, GtkDirectionType direction) { ETree *e_tree; e_tree = E_TREE (container); if (gtk_container_get_focus_child (GTK_CONTAINER (container))) { gtk_container_set_focus_child (GTK_CONTAINER (container), NULL); return FALSE; } return gtk_widget_child_focus (GTK_WIDGET (e_tree->priv->table_canvas), direction); } static void set_header_canvas_width (ETree *e_tree) { gdouble oldwidth, oldheight, width; if (!(e_tree->priv->header_item && e_tree->priv->header_canvas && e_tree->priv->table_canvas)) return; gnome_canvas_get_scroll_region (GNOME_CANVAS (e_tree->priv->table_canvas), NULL, NULL, &width, NULL); gnome_canvas_get_scroll_region (GNOME_CANVAS (e_tree->priv->header_canvas), NULL, NULL, &oldwidth, &oldheight); if (oldwidth != width || oldheight != E_TABLE_HEADER_ITEM (e_tree->priv->header_item)->height - 1) gnome_canvas_set_scroll_region ( GNOME_CANVAS (e_tree->priv->header_canvas), 0, 0, width, /* COLUMN_HEADER_HEIGHT - 1 */ E_TABLE_HEADER_ITEM (e_tree->priv->header_item)->height - 1); } static void header_canvas_size_allocate (GtkWidget *widget, GtkAllocation *alloc, ETree *e_tree) { GtkAllocation allocation; set_header_canvas_width (e_tree); widget = GTK_WIDGET (e_tree->priv->header_canvas); gtk_widget_get_allocation (widget, &allocation); /* When the header item is created ->height == 0, as the font is only created when everything is realized. So we set the usize here as well, so that the size of the header is correct */ if (allocation.height != E_TABLE_HEADER_ITEM (e_tree->priv->header_item)->height) gtk_widget_set_size_request ( widget, -1, E_TABLE_HEADER_ITEM (e_tree->priv->header_item)->height); } static void e_tree_setup_header (ETree *e_tree) { GtkWidget *widget; gchar *pointer; widget = e_canvas_new (); gtk_widget_set_can_focus (widget, FALSE); e_tree->priv->header_canvas = GNOME_CANVAS (widget); gtk_widget_show (widget); pointer = g_strdup_printf("%p", (gpointer) e_tree); e_tree->priv->header_item = gnome_canvas_item_new ( gnome_canvas_root (e_tree->priv->header_canvas), e_table_header_item_get_type (), "ETableHeader", e_tree->priv->header, "full_header", e_tree->priv->full_header, "sort_info", e_tree->priv->sort_info, "dnd_code", pointer, "tree", e_tree, NULL); g_free(pointer); g_signal_connect ( e_tree->priv->header_canvas, "size_allocate", G_CALLBACK (header_canvas_size_allocate), e_tree); gtk_widget_set_size_request ( GTK_WIDGET (e_tree->priv->header_canvas), -1, E_TABLE_HEADER_ITEM (e_tree->priv->header_item)->height); } static void scroll_to_cursor (ETree *e_tree) { ETreePath path; GtkAdjustment *adjustment; GtkLayout *layout; gint x, y, w, h; gdouble page_size; gdouble lower; gdouble upper; gdouble value; path = e_tree_get_cursor (e_tree); x = y = w = h = 0; if (path) { gint row = e_tree_row_of_node(e_tree, path); gint col = 0; if (row >= 0) e_table_item_get_cell_geometry ( E_TABLE_ITEM (e_tree->priv->item), &row, &col, &x, &y, &w, &h); } layout = GTK_LAYOUT (e_tree->priv->table_canvas); adjustment = gtk_layout_get_vadjustment (layout); page_size = gtk_adjustment_get_page_size (adjustment); lower = gtk_adjustment_get_lower (adjustment); upper = gtk_adjustment_get_upper (adjustment); value = gtk_adjustment_get_value (adjustment); if (y < value || y + h > value + page_size) { value = CLAMP (y - page_size / 2, lower, upper - page_size); gtk_adjustment_set_value (adjustment, value); } } static gboolean tree_canvas_reflow_idle (ETree *e_tree) { gdouble height, width; gdouble oldheight, oldwidth; GtkAllocation allocation; GtkWidget *widget; widget = GTK_WIDGET (e_tree->priv->table_canvas); gtk_widget_get_allocation (widget, &allocation); g_object_get ( e_tree->priv->item, "height", &height, "width", &width, NULL); height = MAX ((gint)height, allocation.height); width = MAX((gint)width, allocation.width); /* I have no idea why this needs to be -1, but it works. */ gnome_canvas_get_scroll_region ( GNOME_CANVAS (e_tree->priv->table_canvas), NULL, NULL, &oldwidth, &oldheight); if (oldwidth != width - 1 || oldheight != height - 1) { gnome_canvas_set_scroll_region ( GNOME_CANVAS (e_tree->priv->table_canvas), 0, 0, width - 1, height - 1); set_header_canvas_width (e_tree); } e_tree->priv->reflow_idle_id = 0; if (e_tree->priv->show_cursor_after_reflow) { e_tree->priv->show_cursor_after_reflow = FALSE; scroll_to_cursor (e_tree); } return FALSE; } static void tree_canvas_size_allocate (GtkWidget *widget, GtkAllocation *alloc, ETree *e_tree) { gdouble width; gdouble height; GValue *val = g_new0 (GValue, 1); g_value_init (val, G_TYPE_DOUBLE); width = alloc->width; g_value_set_double (val, width); g_object_get (e_tree->priv->item, "height", &height, NULL); height = MAX ((gint)height, alloc->height); g_object_set (e_tree->priv->item, "width", width, NULL); g_object_set_property (G_OBJECT (e_tree->priv->header), "width", val); g_free (val); if (e_tree->priv->reflow_idle_id) g_source_remove(e_tree->priv->reflow_idle_id); tree_canvas_reflow_idle(e_tree); scroll_to_cursor (e_tree); } static void tree_canvas_reflow (GnomeCanvas *canvas, ETree *e_tree) { if (!e_tree->priv->reflow_idle_id) e_tree->priv->reflow_idle_id = g_idle_add_full ( 400, (GSourceFunc) tree_canvas_reflow_idle, e_tree, NULL); } static void item_cursor_change (ETableItem *eti, gint row, ETree *et) { ETreePath path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit (et, et_signals[CURSOR_CHANGE], 0, row, path); } static void item_cursor_activated (ETableItem *eti, gint row, ETree *et) { ETreePath path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit (et, et_signals[CURSOR_ACTIVATED], 0, row, path); } static void item_double_click (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et) { ETreePath path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit (et, et_signals[DOUBLE_CLICK], 0, row, path, col, event); } static gboolean item_right_click (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et) { ETreePath path = e_tree_table_adapter_node_at_row(et->priv->etta, row); gboolean return_val = 0; g_signal_emit ( et, et_signals[RIGHT_CLICK], 0, row, path, col, event, &return_val); return return_val; } static gboolean item_click (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et) { gboolean return_val = 0; ETreePath path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit ( et, et_signals[CLICK], 0, row, path, col, event, &return_val); return return_val; } static gint item_key_press (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et) { gint return_val = 0; GdkEventKey *key = (GdkEventKey *) event; ETreePath path; gint y, row_local, col_local; GtkAdjustment *adjustment; GtkLayout *layout; gdouble page_size; gdouble upper; gdouble value; layout = GTK_LAYOUT (et->priv->table_canvas); adjustment = gtk_layout_get_vadjustment (layout); page_size = gtk_adjustment_get_page_size (adjustment); upper = gtk_adjustment_get_upper (adjustment); value = gtk_adjustment_get_value (adjustment); switch (key->keyval) { case GDK_Page_Down: case GDK_KP_Page_Down: y = CLAMP (value + (2 * page_size - 50), 0, upper); y -= value; e_tree_get_cell_at (et, 30, y, &row_local, &col_local); if (row_local == -1) row_local = e_table_model_row_count (E_TABLE_MODEL(et->priv->etta)) - 1; row_local = e_tree_view_to_model_row (et, row_local); col_local = e_selection_model_cursor_col ( E_SELECTION_MODEL (et->priv->selection)); e_selection_model_select_as_key_press ( E_SELECTION_MODEL (et->priv->selection), row_local, col_local, key->state); return_val = 1; break; case GDK_Page_Up: case GDK_KP_Page_Up: y = CLAMP (value - (page_size - 50), 0, upper); y -= value; e_tree_get_cell_at (et, 30, y, &row_local, &col_local); if (row_local == -1) row_local = e_table_model_row_count (E_TABLE_MODEL(et->priv->etta)) - 1; row_local = e_tree_view_to_model_row (et, row_local); col_local = e_selection_model_cursor_col ( E_SELECTION_MODEL (et->priv->selection)); e_selection_model_select_as_key_press ( E_SELECTION_MODEL (et->priv->selection), row_local, col_local, key->state); return_val = 1; break; case GDK_plus: case GDK_KP_Add: case GDK_Right: case GDK_KP_Right: /* Only allow if the Shift modifier is used. * eg. Ctrl-Equal shouldn't be handled. */ if ((key->state & (GDK_SHIFT_MASK | GDK_LOCK_MASK | GDK_MOD1_MASK)) != GDK_SHIFT_MASK) break; if (row != -1) { path = e_tree_table_adapter_node_at_row(et->priv->etta, row); if (path) e_tree_table_adapter_node_set_expanded (et->priv->etta, path, TRUE); } return_val = 1; break; case GDK_underscore: case GDK_KP_Subtract: case GDK_Left: case GDK_KP_Left: /* Only allow if the Shift modifier is used. * eg. Ctrl-Minus shouldn't be handled. */ if ((key->state & (GDK_SHIFT_MASK | GDK_LOCK_MASK | GDK_MOD1_MASK)) != GDK_SHIFT_MASK) break; if (row != -1) { path = e_tree_table_adapter_node_at_row(et->priv->etta, row); if (path) e_tree_table_adapter_node_set_expanded (et->priv->etta, path, FALSE); } return_val = 1; break; case GDK_BackSpace: if (e_table_search_backspace (et->priv->search)) return TRUE; /* Fallthrough */ default: if ((key->state & ~(GDK_SHIFT_MASK | GDK_LOCK_MASK | GDK_MOD1_MASK | GDK_MOD2_MASK | GDK_MOD3_MASK | GDK_MOD4_MASK | GDK_MOD5_MASK)) == 0 && ((key->keyval >= GDK_a && key->keyval <= GDK_z) || (key->keyval >= GDK_A && key->keyval <= GDK_Z) || (key->keyval >= GDK_0 && key->keyval <= GDK_9))) { e_table_search_input_character (et->priv->search, key->keyval); } path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit (et, et_signals[KEY_PRESS], 0, row, path, col, event, &return_val); break; } return return_val; } static gint item_start_drag (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et) { ETreePath path; gint return_val = 0; path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit ( et, et_signals[START_DRAG], 0, row, path, col, event, &return_val); return return_val; } static void et_selection_model_selection_changed (ETableSelectionModel *etsm, ETree *et) { g_signal_emit (et, et_signals[SELECTION_CHANGE], 0); } static void et_selection_model_selection_row_changed (ETableSelectionModel *etsm, gint row, ETree *et) { g_signal_emit (et, et_signals[SELECTION_CHANGE], 0); } static void et_build_item (ETree *et) { et->priv->item = gnome_canvas_item_new ( GNOME_CANVAS_GROUP ( gnome_canvas_root (et->priv->table_canvas)), e_table_item_get_type(), "ETableHeader", et->priv->header, "ETableModel", et->priv->etta, "selection_model", et->priv->selection, "alternating_row_colors", et->priv->alternating_row_colors, "horizontal_draw_grid", et->priv->horizontal_draw_grid, "vertical_draw_grid", et->priv->vertical_draw_grid, "drawfocus", et->priv->draw_focus, "cursor_mode", et->priv->cursor_mode, "length_threshold", et->priv->length_threshold, "uniform_row_height", et->priv->uniform_row_height, NULL); g_signal_connect (et->priv->item, "cursor_change", G_CALLBACK (item_cursor_change), et); g_signal_connect (et->priv->item, "cursor_activated", G_CALLBACK (item_cursor_activated), et); g_signal_connect (et->priv->item, "double_click", G_CALLBACK (item_double_click), et); g_signal_connect (et->priv->item, "right_click", G_CALLBACK (item_right_click), et); g_signal_connect (et->priv->item, "click", G_CALLBACK (item_click), et); g_signal_connect (et->priv->item, "key_press", G_CALLBACK (item_key_press), et); g_signal_connect (et->priv->item, "start_drag", G_CALLBACK (item_start_drag), et); } static void et_canvas_style_set (GtkWidget *widget, GtkStyle *prev_style) { GtkStyle *style; style = gtk_widget_get_style (widget); gnome_canvas_item_set( E_TREE(widget)->priv->white_item, "fill_color_gdk", &style->base[GTK_STATE_NORMAL], NULL); } static gboolean white_item_event (GnomeCanvasItem *white_item, GdkEvent *event, ETree *e_tree) { gboolean return_val = 0; g_signal_emit (e_tree, et_signals[WHITE_SPACE_EVENT], 0, event, &return_val); return return_val; } static gint et_canvas_root_event (GnomeCanvasItem *root, GdkEvent *event, ETree *e_tree) { switch (event->type) { case GDK_BUTTON_PRESS: case GDK_2BUTTON_PRESS: case GDK_BUTTON_RELEASE: if (event->button.button != 4 && event->button.button != 5) { if (gtk_widget_has_focus (GTK_WIDGET (root->canvas))) { GnomeCanvasItem *item = GNOME_CANVAS(root->canvas)->focused_item; if (E_IS_TABLE_ITEM(item)) { e_table_item_leave_edit(E_TABLE_ITEM(item)); return TRUE; } } } break; default: break; } return FALSE; } /* Handler for focus events in the table_canvas; we have to repaint ourselves * and give the focus to some ETableItem. */ static gint table_canvas_focus_event_cb (GtkWidget *widget, GdkEventFocus *event, gpointer data) { GnomeCanvas *canvas; ETree *tree; gtk_widget_queue_draw (widget); if (!event->in) return TRUE; canvas = GNOME_CANVAS (widget); tree = E_TREE (data); if (!canvas->focused_item || (e_selection_model_cursor_row (tree->priv->selection) == -1)) { e_table_item_set_cursor (E_TABLE_ITEM (tree->priv->item), 0, 0); gnome_canvas_item_grab_focus (tree->priv->item); } return TRUE; } static void e_tree_setup_table (ETree *e_tree) { GtkWidget *widget; GtkStyle *style; e_tree->priv->table_canvas = GNOME_CANVAS (e_canvas_new ()); g_signal_connect ( e_tree->priv->table_canvas, "size_allocate", G_CALLBACK (tree_canvas_size_allocate), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "focus_in_event", G_CALLBACK (table_canvas_focus_event_cb), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "focus_out_event", G_CALLBACK (table_canvas_focus_event_cb), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "drag_begin", G_CALLBACK (et_drag_begin), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "drag_end", G_CALLBACK (et_drag_end), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "drag_data_get", G_CALLBACK (et_drag_data_get), e_tree); g_signal_connect ( e_tree->priv->table_canvas, "drag_data_delete", G_CALLBACK (et_drag_data_delete), e_tree); g_signal_connect ( e_tree, "drag_motion", G_CALLBACK (et_drag_motion), e_tree); g_signal_connect ( e_tree, "drag_leave", G_CALLBACK (et_drag_leave), e_tree); g_signal_connect ( e_tree, "drag_drop", G_CALLBACK (et_drag_drop), e_tree); g_signal_connect ( e_tree, "drag_data_received", G_CALLBACK (et_drag_data_received), e_tree); g_signal_connect (e_tree->priv->table_canvas, "reflow", G_CALLBACK (tree_canvas_reflow), e_tree); widget = GTK_WIDGET (e_tree->priv->table_canvas); style = gtk_widget_get_style (widget); gtk_widget_show (widget); e_tree->priv->white_item = gnome_canvas_item_new ( gnome_canvas_root (e_tree->priv->table_canvas), e_canvas_background_get_type(), "fill_color_gdk", &style->base[GTK_STATE_NORMAL], NULL); g_signal_connect ( e_tree->priv->white_item, "event", G_CALLBACK (white_item_event), e_tree); g_signal_connect ( gnome_canvas_root (e_tree->priv->table_canvas), "event", G_CALLBACK(et_canvas_root_event), e_tree); et_build_item(e_tree); } /** * e_tree_set_search_column: * @e_tree: #ETree object that will be modified * @col: Column index to use for searches * * This routine sets the current search column to be used for keypress * searches of the #ETree. If -1 is passed in for column, the current * search column is cleared. */ void e_tree_set_search_column (ETree *e_tree, gint col) { if (col == -1) { clear_current_search_col (e_tree); return; } e_tree->priv->search_col_set = TRUE; e_tree->priv->current_search_col = e_table_header_get_column ( e_tree->priv->full_header, col); } void e_tree_set_state_object(ETree *e_tree, ETableState *state) { GValue *val; GtkAllocation allocation; GtkWidget *widget; val = g_new0 (GValue, 1); g_value_init (val, G_TYPE_DOUBLE); connect_header (e_tree, state); widget = GTK_WIDGET (e_tree->priv->table_canvas); gtk_widget_get_allocation (widget, &allocation); g_value_set_double (val, (gdouble) allocation.width); g_object_set_property (G_OBJECT (e_tree->priv->header), "width", val); g_free (val); if (e_tree->priv->header_item) g_object_set(e_tree->priv->header_item, "ETableHeader", e_tree->priv->header, "sort_info", e_tree->priv->sort_info, NULL); if (e_tree->priv->item) g_object_set(e_tree->priv->item, "ETableHeader", e_tree->priv->header, NULL); if (e_tree->priv->etta) e_tree_table_adapter_set_sort_info (e_tree->priv->etta, e_tree->priv->sort_info); e_tree_state_change (e_tree); } /** * e_tree_set_state: * @e_tree: #ETree object that will be modified * @state_str: a string with the XML representation of the #ETableState. * * This routine sets the state (as described by #ETableState) of the * #ETree object. */ void e_tree_set_state (ETree *e_tree, const gchar *state_str) { ETableState *state; g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); g_return_if_fail(state_str != NULL); state = e_table_state_new(); e_table_state_load_from_string(state, state_str); if (state->col_count > 0) e_tree_set_state_object(e_tree, state); g_object_unref(state); } /** * e_tree_load_state: * @e_tree: #ETree object that will be modified * @filename: name of the file containing the state to be loaded into the #ETree * * An #ETableState will be loaded form the file pointed by @filename into the * @e_tree object. */ void e_tree_load_state (ETree *e_tree, const gchar *filename) { ETableState *state; g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); g_return_if_fail(filename != NULL); state = e_table_state_new(); e_table_state_load_from_file(state, filename); if (state->col_count > 0) e_tree_set_state_object(e_tree, state); g_object_unref(state); } /** * e_tree_get_state_object: * @e_tree: #ETree object to act on * * Builds an #ETableState corresponding to the current state of the * #ETree. * * Return value: * The %ETableState object generated. **/ ETableState * e_tree_get_state_object (ETree *e_tree) { ETableState *state; gint full_col_count; gint i, j; state = e_table_state_new(); state->sort_info = e_tree->priv->sort_info; if (state->sort_info) g_object_ref(state->sort_info); state->col_count = e_table_header_count (e_tree->priv->header); full_col_count = e_table_header_count (e_tree->priv->full_header); state->columns = g_new(int, state->col_count); state->expansions = g_new(double, state->col_count); for (i = 0; i < state->col_count; i++) { ETableCol *col = e_table_header_get_column(e_tree->priv->header, i); state->columns[i] = -1; for (j = 0; j < full_col_count; j++) { if (col->col_idx == e_table_header_index(e_tree->priv->full_header, j)) { state->columns[i] = j; break; } } state->expansions[i] = col->expansion; } return state; } /** * e_tree_get_state: * @e_tree: The #ETree to act on * * Builds a state object based on the current state and returns the * string corresponding to that state. * * Return value: * A string describing the current state of the #ETree. **/ gchar * e_tree_get_state (ETree *e_tree) { ETableState *state; gchar *string; state = e_tree_get_state_object(e_tree); string = e_table_state_save_to_string(state); g_object_unref(state); return string; } /** * e_tree_save_state: * @e_tree: The #ETree to act on * @filename: name of the file to save to * * Saves the state of the @e_tree object into the file pointed by * @filename. **/ void e_tree_save_state (ETree *e_tree, const gchar *filename) { ETableState *state; state = e_tree_get_state_object(e_tree); e_table_state_save_to_file(state, filename); g_object_unref(state); } /** * e_tree_get_spec: * @e_tree: The #ETree to query * * Returns the specification object. * * Return value: **/ ETableSpecification * e_tree_get_spec (ETree *e_tree) { return e_tree->priv->spec; } static void et_table_model_changed (ETableModel *model, ETree *et) { if (et->priv->horizontal_scrolling) e_table_header_update_horizontal(et->priv->header); } static void et_table_row_changed (ETableModel *table_model, gint row, ETree *et) { et_table_model_changed (table_model, et); } static void et_table_cell_changed (ETableModel *table_model, gint view_col, gint row, ETree *et) { et_table_model_changed (table_model, et); } static void et_table_rows_deleted (ETableModel *table_model, gint row, gint count, ETree *et) { ETreePath * node, * prev_node; /* If the cursor is still valid after this deletion, we're done */ if (e_selection_model_cursor_row (et->priv->selection) >= 0 || row == 0) return; prev_node = e_tree_node_at_row (et, row-1); node = e_tree_get_cursor (et); /* Check if the cursor is a child of the node directly before the * deleted region (implying that an expander was collapsed with * the cursor inside it) */ while (node) { node = e_tree_model_node_get_parent (et->priv->model, node); if (node == prev_node) { /* Set the cursor to the still-visible parent */ e_tree_set_cursor (et, prev_node); return; } } } static void et_connect_to_etta (ETree *et) { et->priv->table_model_change_id = g_signal_connect ( et->priv->etta, "model_changed", G_CALLBACK (et_table_model_changed), et); et->priv->table_row_change_id = g_signal_connect ( et->priv->etta, "model_row_changed", G_CALLBACK (et_table_row_changed), et); et->priv->table_cell_change_id = g_signal_connect ( et->priv->etta, "model_cell_changed", G_CALLBACK (et_table_cell_changed), et); et->priv->table_rows_delete_id = g_signal_connect ( et->priv->etta, "model_rows_deleted", G_CALLBACK (et_table_rows_deleted), et); } static gboolean et_real_construct (ETree *e_tree, ETreeModel *etm, ETableExtras *ete, ETableSpecification *specification, ETableState *state) { GtkAdjustment *adjustment; GtkLayout *layout; gint row = 0; if (ete) g_object_ref(ete); else ete = e_table_extras_new(); e_tree->priv->alternating_row_colors = specification->alternating_row_colors; e_tree->priv->horizontal_draw_grid = specification->horizontal_draw_grid; e_tree->priv->vertical_draw_grid = specification->vertical_draw_grid; e_tree->priv->draw_focus = specification->draw_focus; e_tree->priv->cursor_mode = specification->cursor_mode; e_tree->priv->full_header = e_table_spec_to_full_header(specification, ete); connect_header (e_tree, state); e_tree->priv->horizontal_scrolling = specification->horizontal_scrolling; e_tree->priv->model = etm; g_object_ref (etm); e_tree->priv->etta = E_TREE_TABLE_ADAPTER ( e_tree_table_adapter_new (e_tree->priv->model, e_tree->priv->sort_info, e_tree->priv->full_header)); et_connect_to_etta (e_tree); gtk_widget_push_colormap (gdk_rgb_get_colormap ()); e_tree->priv->sorter = e_sorter_new(); g_object_set (e_tree->priv->selection, "sorter", e_tree->priv->sorter, #ifdef E_TREE_USE_TREE_SELECTION "model", e_tree->priv->model, "etta", e_tree->priv->etta, #else "model", e_tree->priv->etta, #endif "selection_mode", specification->selection_mode, "cursor_mode", specification->cursor_mode, NULL); g_signal_connect(e_tree->priv->selection, "selection_changed", G_CALLBACK (et_selection_model_selection_changed), e_tree); g_signal_connect(e_tree->priv->selection, "selection_row_changed", G_CALLBACK (et_selection_model_selection_row_changed), e_tree); if (!specification->no_headers) { e_tree_setup_header (e_tree); } e_tree_setup_table (e_tree); layout = GTK_LAYOUT (e_tree->priv->table_canvas); adjustment = gtk_layout_get_vadjustment (layout); gtk_adjustment_set_step_increment (adjustment, 20); adjustment = gtk_layout_get_hadjustment (layout); gtk_adjustment_set_step_increment (adjustment, 20); if (!specification->no_headers) { /* * The header */ gtk_table_attach (GTK_TABLE (e_tree), GTK_WIDGET (e_tree->priv->header_canvas), 0, 1, 0 + row, 1 + row, GTK_FILL | GTK_EXPAND, GTK_FILL, 0, 0); row++; } gtk_table_attach (GTK_TABLE (e_tree), GTK_WIDGET (e_tree->priv->table_canvas), 0, 1, 0 + row, 1 + row, GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0); gtk_widget_pop_colormap (); g_object_unref(ete); return e_tree != NULL; } /** * e_tree_construct: * @e_tree: The newly created #ETree object. * @etm: The model for this table. * @ete: An optional #ETableExtras. (%NULL is valid.) * @spec_str: The spec. * @state_str: An optional state. (%NULL is valid.) * * This is the internal implementation of e_tree_new() for use by * subclasses or language bindings. See e_tree_new() for details. * * Return value: %TRUE on success, %FALSE if an error occurred **/ gboolean e_tree_construct (ETree *e_tree, ETreeModel *etm, ETableExtras *ete, const gchar *spec_str, const gchar *state_str) { ETableSpecification *specification; ETableState *state; g_return_val_if_fail(e_tree != NULL, FALSE); g_return_val_if_fail(E_IS_TREE(e_tree), FALSE); g_return_val_if_fail(etm != NULL, FALSE); g_return_val_if_fail(E_IS_TREE_MODEL(etm), FALSE); g_return_val_if_fail(ete == NULL || E_IS_TABLE_EXTRAS(ete), FALSE); g_return_val_if_fail(spec_str != NULL, FALSE); specification = e_table_specification_new(); if (!e_table_specification_load_from_string(specification, spec_str)) { g_object_unref (specification); return FALSE; } if (state_str) { state = e_table_state_new(); e_table_state_load_from_string(state, state_str); if (state->col_count <= 0) { g_object_unref(state); state = specification->state; g_object_ref(state); } } else { state = specification->state; g_object_ref(state); } if (!et_real_construct (e_tree, etm, ete, specification, state)) { g_object_unref (specification); g_object_unref (state); return FALSE; } e_tree->priv->spec = specification; g_object_unref (state); return TRUE; } /** * e_tree_construct_from_spec_file: * @e_tree: The newly created #ETree object. * @etm: The model for this tree * @ete: An optional #ETableExtras (%NULL is valid.) * @spec_fn: The filename of the spec * @state_fn: An optional state file (%NULL is valid.) * * This is the internal implementation of e_tree_new_from_spec_file() * for use by subclasses or language bindings. See * e_tree_new_from_spec_file() for details. * * Return value: %TRUE on success, %FALSE if an error occurred **/ gboolean e_tree_construct_from_spec_file (ETree *e_tree, ETreeModel *etm, ETableExtras *ete, const gchar *spec_fn, const gchar *state_fn) { ETableSpecification *specification; ETableState *state; g_return_val_if_fail(e_tree != NULL, FALSE); g_return_val_if_fail(E_IS_TREE(e_tree), FALSE); g_return_val_if_fail(etm != NULL, FALSE); g_return_val_if_fail(E_IS_TREE_MODEL(etm), FALSE); g_return_val_if_fail(ete == NULL || E_IS_TABLE_EXTRAS(ete), FALSE); g_return_val_if_fail(spec_fn != NULL, FALSE); specification = e_table_specification_new(); if (!e_table_specification_load_from_file(specification, spec_fn)) { g_object_unref(specification); return FALSE; } if (state_fn) { state = e_table_state_new(); if (!e_table_state_load_from_file(state, state_fn)) { g_object_unref(state); state = specification->state; g_object_ref(state); } if (state->col_count <= 0) { g_object_unref(state); state = specification->state; g_object_ref(state); } } else { state = specification->state; g_object_ref(state); } if (!et_real_construct (e_tree, etm, ete, specification, state)) { g_object_unref (specification); g_object_unref (state); return FALSE; } e_tree->priv->spec = specification; g_object_unref(state); return TRUE; } /** * e_tree_new: * @etm: The model for this tree * @ete: An optional #ETableExtras (%NULL is valid.) * @spec: The spec * @state: An optional state (%NULL is valid.) * * This function creates an #ETree from the given parameters. The * #ETreeModel is a tree model to be represented. The #ETableExtras * is an optional set of pixbufs, cells, and sorting functions to be * used when interpreting the spec. If you pass in %NULL it uses the * default #ETableExtras. (See e_table_extras_new()). * * @spec is the specification of the set of viewable columns and the * default sorting state and such. @state is an optional string * specifying the current sorting state and such. If @state is NULL, * then the default state from the spec will be used. * * Return value: * The newly created #ETree or %NULL if there's an error. **/ GtkWidget * e_tree_new (ETreeModel *etm, ETableExtras *ete, const gchar *spec, const gchar *state) { ETree *e_tree; g_return_val_if_fail(etm != NULL, NULL); g_return_val_if_fail(E_IS_TREE_MODEL(etm), NULL); g_return_val_if_fail(ete == NULL || E_IS_TABLE_EXTRAS(ete), NULL); g_return_val_if_fail(spec != NULL, NULL); e_tree = g_object_new (E_TREE_TYPE, NULL); if (!e_tree_construct (e_tree, etm, ete, spec, state)) { g_object_unref (e_tree); return NULL; } return (GtkWidget *) e_tree; } /** * e_tree_new_from_spec_file: * @etm: The model for this tree. * @ete: An optional #ETableExtras. (%NULL is valid.) * @spec_fn: The filename of the spec. * @state_fn: An optional state file. (%NULL is valid.) * * This is very similar to e_tree_new(), except instead of passing in * strings you pass in the file names of the spec and state to load. * * @spec_fn is the filename of the spec to load. If this file doesn't * exist, e_tree_new_from_spec_file will return %NULL. * * @state_fn is the filename of the initial state to load. If this is * %NULL or if the specified file doesn't exist, the default state * from the spec file is used. * * Return value: * The newly created #ETree or %NULL if there's an error. **/ GtkWidget * e_tree_new_from_spec_file (ETreeModel *etm, ETableExtras *ete, const gchar *spec_fn, const gchar *state_fn) { ETree *e_tree; g_return_val_if_fail(etm != NULL, NULL); g_return_val_if_fail(E_IS_TREE_MODEL(etm), NULL); g_return_val_if_fail(ete == NULL || E_IS_TABLE_EXTRAS(ete), NULL); g_return_val_if_fail(spec_fn != NULL, NULL); e_tree = g_object_new (E_TREE_TYPE, NULL); if (!e_tree_construct_from_spec_file (e_tree, etm, ete, spec_fn, state_fn)) { g_object_unref (e_tree); return NULL; } return (GtkWidget *) e_tree; } void e_tree_show_cursor_after_reflow (ETree *e_tree) { g_return_if_fail (e_tree != NULL); g_return_if_fail (E_IS_TREE (e_tree)); e_tree->priv->show_cursor_after_reflow = TRUE; } void e_tree_set_cursor (ETree *e_tree, ETreePath path) { #ifndef E_TREE_USE_TREE_SELECTION gint row; #endif g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); g_return_if_fail(path != NULL); #ifdef E_TREE_USE_TREE_SELECTION e_tree_selection_model_select_single_path ( E_TREE_SELECTION_MODEL(e_tree->priv->selection), path); e_tree_selection_model_change_cursor ( E_TREE_SELECTION_MODEL(e_tree->priv->selection), path); #else row = e_tree_table_adapter_row_of_node ( E_TREE_TABLE_ADAPTER(e_tree->priv->etta), path); if (row == -1) return; g_object_set(e_tree->priv->selection, "cursor_row", row, NULL); #endif } ETreePath e_tree_get_cursor (ETree *e_tree) { #ifdef E_TREE_USE_TREE_SELECTION return e_tree_selection_model_get_cursor ( E_TREE_SELECTION_MODEL(e_tree->priv->selection)); #else gint row; g_return_val_if_fail(e_tree != NULL, NULL); g_return_val_if_fail(E_IS_TREE(e_tree), NULL); g_object_get(e_tree->priv->selection, "cursor_row", &row, NULL); if (row == -1) return NULL; return e_tree_table_adapter_node_at_row ( E_TREE_TABLE_ADAPTER(e_tree->priv->etta), row); #endif } void e_tree_selected_row_foreach (ETree *e_tree, EForeachFunc callback, gpointer closure) { g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); e_selection_model_foreach(e_tree->priv->selection, callback, closure); } #ifdef E_TREE_USE_TREE_SELECTION void e_tree_selected_path_foreach (ETree *e_tree, ETreeForeachFunc callback, gpointer closure) { g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); e_tree_selection_model_foreach ( E_TREE_SELECTION_MODEL (e_tree->priv->selection), callback, closure); } /* Standard functions */ static void et_foreach_recurse (ETreeModel *model, ETreePath path, ETreeForeachFunc callback, gpointer closure) { ETreePath child; callback(path, closure); child = e_tree_model_node_get_first_child(E_TREE_MODEL(model), path); for (; child; child = e_tree_model_node_get_next(E_TREE_MODEL(model), child)) if (child) et_foreach_recurse (model, child, callback, closure); } void e_tree_path_foreach (ETree *e_tree, ETreeForeachFunc callback, gpointer closure) { ETreePath root; g_return_if_fail(e_tree != NULL); g_return_if_fail(E_IS_TREE(e_tree)); root = e_tree_model_get_root (e_tree->priv->model); if (root) et_foreach_recurse (e_tree->priv->model, root, callback, closure); } #endif EPrintable * e_tree_get_printable (ETree *e_tree) { g_return_val_if_fail(e_tree != NULL, NULL); g_return_val_if_fail(E_IS_TREE(e_tree), NULL); return e_table_item_get_printable(E_TABLE_ITEM(e_tree->priv->item)); } static void et_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ETree *etree = E_TREE (object); switch (prop_id) { case PROP_ETTA: g_value_set_object (value, etree->priv->etta); break; case PROP_UNIFORM_ROW_HEIGHT: g_value_set_boolean (value, etree->priv->uniform_row_height); break; case PROP_ALWAYS_SEARCH: g_value_set_boolean (value, etree->priv->always_search); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } typedef struct { gchar *arg; gboolean setting; } bool_closure; static void et_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { ETree *etree = E_TREE (object); switch (prop_id) { case PROP_LENGTH_THRESHOLD: etree->priv->length_threshold = g_value_get_int (value); if (etree->priv->item) { gnome_canvas_item_set (GNOME_CANVAS_ITEM(etree->priv->item), "length_threshold", etree->priv->length_threshold, NULL); } break; case PROP_HORIZONTAL_DRAW_GRID: etree->priv->horizontal_draw_grid = g_value_get_boolean (value); if (etree->priv->item) { gnome_canvas_item_set (GNOME_CANVAS_ITEM(etree->priv->item), "horizontal_draw_grid", etree->priv->horizontal_draw_grid, NULL); } break; case PROP_VERTICAL_DRAW_GRID: etree->priv->vertical_draw_grid = g_value_get_boolean (value); if (etree->priv->item) { gnome_canvas_item_set (GNOME_CANVAS_ITEM(etree->priv->item), "vertical_draw_grid", etree->priv->vertical_draw_grid, NULL); } break; case PROP_DRAW_FOCUS: etree->priv->draw_focus = g_value_get_boolean (value); if (etree->priv->item) { gnome_canvas_item_set (GNOME_CANVAS_ITEM(etree->priv->item), "drawfocus", etree->priv->draw_focus, NULL); } break; case PROP_UNIFORM_ROW_HEIGHT: etree->priv->uniform_row_height = g_value_get_boolean (value); if (etree->priv->item) { gnome_canvas_item_set (GNOME_CANVAS_ITEM(etree->priv->item), "uniform_row_height", etree->priv->uniform_row_height, NULL); } break; case PROP_ALWAYS_SEARCH: if (etree->priv->always_search == g_value_get_boolean (value)) return; etree->priv->always_search = g_value_get_boolean (value); clear_current_search_col (etree); break; } } static void set_scroll_adjustments (ETree *tree, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment) { if (vadjustment != NULL) gtk_adjustment_set_step_increment (vadjustment, 20); if (hadjustment != NULL) gtk_adjustment_set_step_increment (hadjustment, 20); if (tree->priv) { GtkLayout *layout; layout = GTK_LAYOUT (tree->priv->table_canvas); gtk_layout_set_hadjustment (layout, hadjustment); gtk_layout_set_vadjustment (layout, vadjustment); if (tree->priv->header_canvas != NULL) gtk_layout_set_hadjustment ( GTK_LAYOUT(tree->priv->header_canvas), hadjustment); } } gint e_tree_get_next_row (ETree *e_tree, gint model_row) { g_return_val_if_fail(e_tree != NULL, -1); g_return_val_if_fail(E_IS_TREE(e_tree), -1); if (e_tree->priv->sorter) { gint i; i = e_sorter_model_to_sorted(E_SORTER (e_tree->priv->sorter), model_row); i++; if (i < e_table_model_row_count(E_TABLE_MODEL(e_tree->priv->etta))) { return e_sorter_sorted_to_model(E_SORTER (e_tree->priv->sorter), i); } else return -1; } else if (model_row < e_table_model_row_count(E_TABLE_MODEL(e_tree->priv->etta)) - 1) return model_row + 1; else return -1; } gint e_tree_get_prev_row (ETree *e_tree, gint model_row) { g_return_val_if_fail(e_tree != NULL, -1); g_return_val_if_fail(E_IS_TREE(e_tree), -1); if (e_tree->priv->sorter) { gint i; i = e_sorter_model_to_sorted(E_SORTER (e_tree->priv->sorter), model_row); i--; if (i >= 0) return e_sorter_sorted_to_model(E_SORTER (e_tree->priv->sorter), i); else return -1; } else return model_row - 1; } gint e_tree_model_to_view_row (ETree *e_tree, gint model_row) { g_return_val_if_fail(e_tree != NULL, -1); g_return_val_if_fail(E_IS_TREE(e_tree), -1); if (e_tree->priv->sorter) return e_sorter_model_to_sorted(E_SORTER (e_tree->priv->sorter), model_row); else return model_row; } gint e_tree_view_to_model_row (ETree *e_tree, gint view_row) { g_return_val_if_fail(e_tree != NULL, -1); g_return_val_if_fail(E_IS_TREE(e_tree), -1); if (e_tree->priv->sorter) return e_sorter_sorted_to_model (E_SORTER (e_tree->priv->sorter), view_row); else return view_row; } gboolean e_tree_node_is_expanded (ETree *et, ETreePath path) { g_return_val_if_fail(path, FALSE); return e_tree_table_adapter_node_is_expanded (et->priv->etta, path); } void e_tree_node_set_expanded (ETree *et, ETreePath path, gboolean expanded) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE(et)); e_tree_table_adapter_node_set_expanded (et->priv->etta, path, expanded); } void e_tree_node_set_expanded_recurse (ETree *et, ETreePath path, gboolean expanded) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE(et)); e_tree_table_adapter_node_set_expanded_recurse (et->priv->etta, path, expanded); } void e_tree_root_node_set_visible (ETree *et, gboolean visible) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE(et)); e_tree_table_adapter_root_node_set_visible (et->priv->etta, visible); } ETreePath e_tree_node_at_row (ETree *et, gint row) { ETreePath path; path = e_tree_table_adapter_node_at_row (et->priv->etta, row); return path; } gint e_tree_row_of_node (ETree *et, ETreePath path) { return e_tree_table_adapter_row_of_node (et->priv->etta, path); } gboolean e_tree_root_node_is_visible(ETree *et) { return e_tree_table_adapter_root_node_is_visible (et->priv->etta); } void e_tree_show_node (ETree *et, ETreePath path) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE(et)); e_tree_table_adapter_show_node (et->priv->etta, path); } void e_tree_save_expanded_state (ETree *et, gchar *filename) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE(et)); e_tree_table_adapter_save_expanded_state (et->priv->etta, filename); } void e_tree_load_expanded_state (ETree *et, gchar *filename) { e_tree_table_adapter_load_expanded_state (et->priv->etta, filename); } xmlDoc * e_tree_save_expanded_state_xml (ETree *et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return e_tree_table_adapter_save_expanded_state_xml (et->priv->etta); } void e_tree_load_expanded_state_xml (ETree *et, xmlDoc *doc) { g_return_if_fail (et != NULL); g_return_if_fail (E_IS_TREE (et)); g_return_if_fail (doc != NULL); e_tree_table_adapter_load_expanded_state_xml (et->priv->etta, doc); } /* state: <0 ... collapse; 0 ... no force - use default; >0 ... expand; when using this, be sure to reset to 0 once no forcing is required anymore, aka the build of the tree is done */ void e_tree_force_expanded_state (ETree *et, gint state) { e_tree_table_adapter_force_expanded_state (et->priv->etta, state); } gint e_tree_row_count (ETree *et) { return e_table_model_row_count (E_TABLE_MODEL(et->priv->etta)); } GtkWidget * e_tree_get_tooltip (ETree *et) { return E_CANVAS(et->priv->table_canvas)->tooltip_window; } static ETreePath find_next_in_range (ETree *et, gint start, gint end, ETreePathFunc func, gpointer data) { ETreePath path; gint row; for (row = start; row <= end; row++) { path = e_tree_table_adapter_node_at_row (et->priv->etta, row); if (path && func (et->priv->model, path, data)) return path; } return NULL; } static ETreePath find_prev_in_range (ETree *et, gint start, gint end, ETreePathFunc func, gpointer data) { ETreePath path; gint row; for (row = start; row >= end; row--) { path = e_tree_table_adapter_node_at_row (et->priv->etta, row); if (path && func (et->priv->model, path, data)) return path; } return NULL; } gboolean e_tree_find_next (ETree *et, ETreeFindNextParams params, ETreePathFunc func, gpointer data) { ETreePath cursor, found; gint row, row_count; cursor = e_tree_get_cursor (et); row = e_tree_table_adapter_row_of_node (et->priv->etta, cursor); row_count = e_table_model_row_count (E_TABLE_MODEL (et->priv->etta)); if (params & E_TREE_FIND_NEXT_FORWARD) found = find_next_in_range (et, row + 1, row_count - 1, func, data); else found = find_prev_in_range (et, row == -1 ? -1 : row - 1, 0, func, data); if (found) { e_tree_table_adapter_show_node (et->priv->etta, found); e_tree_set_cursor (et, found); return TRUE; } if (params & E_TREE_FIND_NEXT_WRAP) { if (params & E_TREE_FIND_NEXT_FORWARD) found = find_next_in_range (et, 0, row, func, data); else found = find_prev_in_range (et, row_count - 1, row, func, data); if (found && found != cursor) { e_tree_table_adapter_show_node (et->priv->etta, found); e_tree_set_cursor (et, found); return TRUE; } } return FALSE; } void e_tree_right_click_up (ETree *et) { e_selection_model_right_click_up(et->priv->selection); } /** * e_tree_get_model: * @et: the ETree * * Returns the model upon which this ETree is based. * * Returns: the model **/ ETreeModel * e_tree_get_model (ETree *et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return et->priv->model; } /** * e_tree_get_selection_model: * @et: the ETree * * Returns the selection model of this ETree. * * Returns: the selection model **/ ESelectionModel * e_tree_get_selection_model (ETree *et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return et->priv->selection; } /** * e_tree_get_table_adapter: * @et: the ETree * * Returns the table adapter this ETree uses. * * Returns: the model **/ ETreeTableAdapter * e_tree_get_table_adapter (ETree *et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return et->priv->etta; } ETableItem * e_tree_get_item(ETree * et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return E_TABLE_ITEM (et->priv->item); } GnomeCanvasItem * e_tree_get_header_item(ETree * et) { g_return_val_if_fail (et != NULL, NULL); g_return_val_if_fail (E_IS_TREE (et), NULL); return et->priv->header_item; } struct _ETreeDragSourceSite { GdkModifierType start_button_mask; GtkTargetList *target_list; /* Targets for drag data */ GdkDragAction actions; /* Possible actions */ GdkColormap *colormap; /* Colormap for drag icon */ GdkPixmap *pixmap; /* Icon for drag data */ GdkBitmap *mask; /* Stored button press information to detect drag beginning */ gint state; gint x, y; gint row, col; }; typedef enum { GTK_DRAG_STATUS_DRAG, GTK_DRAG_STATUS_WAIT, GTK_DRAG_STATUS_DROP } GtkDragStatus; typedef struct _GtkDragDestInfo GtkDragDestInfo; typedef struct _GtkDragSourceInfo GtkDragSourceInfo; struct _GtkDragDestInfo { GtkWidget *widget; /* Widget in which drag is in */ GdkDragContext *context; /* Drag context */ GtkDragSourceInfo *proxy_source; /* Set if this is a proxy drag */ GtkSelectionData *proxy_data; /* Set while retrieving proxied data */ guint dropped : 1; /* Set after we receive a drop */ guint32 proxy_drop_time; /* Timestamp for proxied drop */ guint proxy_drop_wait : 1; /* Set if we are waiting for a * status reply before sending * a proxied drop on. */ gint drop_x, drop_y; /* Position of drop */ }; struct _GtkDragSourceInfo { GtkWidget *widget; GtkTargetList *target_list; /* Targets for drag data */ GdkDragAction possible_actions; /* Actions allowed by source */ GdkDragContext *context; /* drag context */ GtkWidget *icon_window; /* Window for drag */ GtkWidget *ipc_widget; /* GtkInvisible for grab, message passing */ GdkCursor *cursor; /* Cursor for drag */ gint hot_x, hot_y; /* Hot spot for drag */ gint button; /* mouse button starting drag */ GtkDragStatus status; /* drag status */ GdkEvent *last_event; /* motion event waiting for response */ gint start_x, start_y; /* Initial position */ gint cur_x, cur_y; /* Current Position */ GList *selections; /* selections we've claimed */ GtkDragDestInfo *proxy_dest; /* Set if this is a proxy drag */ guint drop_timeout; /* Timeout for aborting drop */ guint destroy_icon : 1; /* If true, destroy icon_window */ }; /* Drag & drop stuff. */ /* Target */ void e_tree_drag_get_data (ETree *tree, gint row, gint col, GdkDragContext *context, GdkAtom target, guint32 time) { g_return_if_fail(tree != NULL); g_return_if_fail(E_IS_TREE(tree)); gtk_drag_get_data(GTK_WIDGET(tree), context, target, time); } /** * e_tree_drag_highlight: * @tree: * @row: * @col: * * Set col to -1 to highlight the entire row. * Set row to -1 to turn off the highlight. */ void e_tree_drag_highlight (ETree *tree, gint row, gint col) { GtkAdjustment *adjustment; GtkAllocation allocation; GtkLayout *layout; GtkStyle *style; g_return_if_fail(E_IS_TREE(tree)); layout = GTK_LAYOUT (tree->priv->table_canvas); style = gtk_widget_get_style (GTK_WIDGET (tree)); gtk_widget_get_allocation (GTK_WIDGET (layout), &allocation); if (row != -1) { gint x, y, width, height; if (col == -1) { e_tree_get_cell_geometry (tree, row, 0, &x, &y, &width, &height); x = 0; width = allocation.width; } else { e_tree_get_cell_geometry (tree, row, col, &x, &y, &width, &height); adjustment = gtk_layout_get_hadjustment (layout); x += gtk_adjustment_get_value (adjustment); } adjustment = gtk_layout_get_vadjustment (layout); y += gtk_adjustment_get_value (adjustment); if (tree->priv->drop_highlight == NULL) { tree->priv->drop_highlight = gnome_canvas_item_new ( gnome_canvas_root (tree->priv->table_canvas), gnome_canvas_rect_get_type (), "fill_color", NULL, "outline_color_gdk", &style->fg[GTK_STATE_NORMAL], NULL); } gnome_canvas_item_set ( tree->priv->drop_highlight, "x1", (gdouble) x, "x2", (gdouble) x + width - 1, "y1", (gdouble) y, "y2", (gdouble) y + height - 1, NULL); } else { gtk_object_destroy (GTK_OBJECT (tree->priv->drop_highlight)); tree->priv->drop_highlight = NULL; } } void e_tree_drag_unhighlight (ETree *tree) { g_return_if_fail(tree != NULL); g_return_if_fail(E_IS_TREE(tree)); if (tree->priv->drop_highlight) { gtk_object_destroy (GTK_OBJECT (tree->priv->drop_highlight)); tree->priv->drop_highlight = NULL; } } void e_tree_drag_dest_set (ETree *tree, GtkDestDefaults flags, const GtkTargetEntry *targets, gint n_targets, GdkDragAction actions) { g_return_if_fail(tree != NULL); g_return_if_fail(E_IS_TREE(tree)); gtk_drag_dest_set(GTK_WIDGET(tree), flags, targets, n_targets, actions); } void e_tree_drag_dest_set_proxy (ETree *tree, GdkWindow *proxy_window, GdkDragProtocol protocol, gboolean use_coordinates) { g_return_if_fail(tree != NULL); g_return_if_fail(E_IS_TREE(tree)); gtk_drag_dest_set_proxy(GTK_WIDGET(tree), proxy_window, protocol, use_coordinates); } /* * There probably should be functions for setting the targets * as a GtkTargetList */ void e_tree_drag_dest_unset (GtkWidget *widget) { g_return_if_fail(widget != NULL); g_return_if_fail(E_IS_TREE(widget)); gtk_drag_dest_unset(widget); } /* Source side */ static gint et_real_start_drag (ETree *tree, gint row, ETreePath path, gint col, GdkEvent *event) { GtkDragSourceInfo *info; GdkDragContext *context; ETreeDragSourceSite *site; if (tree->priv->do_drag) { site = tree->priv->site; site->state = 0; context = e_tree_drag_begin (tree, row, col, site->target_list, site->actions, 1, event); if (context) { info = g_dataset_get_data (context, "gtk-info"); if (info && !info->icon_window) { if (site->pixmap) gtk_drag_set_icon_pixmap (context, site->colormap, site->pixmap, site->mask, -2, -2); else gtk_drag_set_icon_default (context); } } return TRUE; } return FALSE; } void e_tree_drag_source_set (ETree *tree, GdkModifierType start_button_mask, const GtkTargetEntry *targets, gint n_targets, GdkDragAction actions) { ETreeDragSourceSite *site; GtkWidget *canvas; g_return_if_fail(tree != NULL); g_return_if_fail(E_IS_TREE(tree)); canvas = GTK_WIDGET(tree->priv->table_canvas); site = tree->priv->site; tree->priv->do_drag = TRUE; gtk_widget_add_events (canvas, gtk_widget_get_events (canvas) | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_MOTION_MASK | GDK_STRUCTURE_MASK); if (site) { if (site->target_list) gtk_target_list_unref (site->target_list); } else { site = g_new0 (ETreeDragSourceSite, 1); tree->priv->site = site; } site->start_button_mask = start_button_mask; if (targets) site->target_list = gtk_target_list_new (targets, n_targets); else site->target_list = NULL; site->actions = actions; } void e_tree_drag_source_unset (ETree *tree) { ETreeDragSourceSite *site; g_return_if_fail (tree != NULL); g_return_if_fail (E_IS_TREE(tree)); site = tree->priv->site; if (site) { if (site->target_list) gtk_target_list_unref (site->target_list); g_free (site); tree->priv->site = NULL; } } /* There probably should be functions for setting the targets * as a GtkTargetList */ GdkDragContext * e_tree_drag_begin (ETree *tree, gint row, gint col, GtkTargetList *targets, GdkDragAction actions, gint button, GdkEvent *event) { ETreePath path; g_return_val_if_fail (tree != NULL, NULL); g_return_val_if_fail (E_IS_TREE(tree), NULL); path = e_tree_table_adapter_node_at_row(tree->priv->etta, row); tree->priv->drag_row = row; tree->priv->drag_path = path; tree->priv->drag_col = col; return gtk_drag_begin(GTK_WIDGET (tree->priv->table_canvas), targets, actions, button, event); } /** * e_tree_get_cell_at: * @tree: An ETree widget * @x: X coordinate for the pixel * @y: Y coordinate for the pixel * @row_return: Pointer to return the row value * @col_return: Pointer to return the column value * * Return the row and column for the cell in which the pixel at (@x, @y) is * contained. **/ void e_tree_get_cell_at (ETree *tree, gint x, gint y, gint *row_return, gint *col_return) { GtkAdjustment *adjustment; GtkLayout *layout; g_return_if_fail (E_IS_TREE (tree)); g_return_if_fail (row_return != NULL); g_return_if_fail (col_return != NULL); /* FIXME it would be nice if it could handle a NULL row_return or * col_return gracefully. */ if (row_return) *row_return = -1; if (col_return) *col_return = -1; layout = GTK_LAYOUT (tree->priv->table_canvas); adjustment = gtk_layout_get_hadjustment (layout); x += gtk_adjustment_get_value (adjustment); adjustment = gtk_layout_get_vadjustment (layout); y += gtk_adjustment_get_value (adjustment); e_table_item_compute_location ( E_TABLE_ITEM (tree->priv->item), &x, &y, row_return, col_return); } /** * e_tree_get_cell_geometry: * @tree: The tree. * @row: The row to get the geometry of. * @col: The col to get the geometry of. * @x_return: Returns the x coordinate of the upper right hand corner * of the cell with respect to the widget. * @y_return: Returns the y coordinate of the upper right hand corner * of the cell with respect to the widget. * @width_return: Returns the width of the cell. * @height_return: Returns the height of the cell. * * Computes the data about this cell. **/ void e_tree_get_cell_geometry (ETree *tree, gint row, gint col, gint *x_return, gint *y_return, gint *width_return, gint *height_return) { GtkAdjustment *adjustment; GtkLayout *layout; g_return_if_fail (E_IS_TREE (tree)); g_return_if_fail (row >= 0); g_return_if_fail (col >= 0); /* FIXME it would be nice if it could handle a NULL row_return or * col_return gracefully. */ e_table_item_get_cell_geometry ( E_TABLE_ITEM (tree->priv->item), &row, &col, x_return, y_return, width_return, height_return); layout = GTK_LAYOUT (tree->priv->table_canvas); if (x_return) { adjustment = gtk_layout_get_hadjustment (layout); (*x_return) -= gtk_adjustment_get_value (adjustment); } if (y_return) { adjustment = gtk_layout_get_vadjustment (layout); (*y_return) -= gtk_adjustment_get_value (adjustment); } } static void et_drag_begin (GtkWidget *widget, GdkDragContext *context, ETree *et) { g_signal_emit (et, et_signals[TREE_DRAG_BEGIN], 0, et->priv->drag_row, et->priv->drag_path, et->priv->drag_col, context); } static void et_drag_end (GtkWidget *widget, GdkDragContext *context, ETree *et) { g_signal_emit (et, et_signals[TREE_DRAG_END], 0, et->priv->drag_row, et->priv->drag_path, et->priv->drag_col, context); } static void et_drag_data_get(GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time, ETree *et) { g_signal_emit (et, et_signals[TREE_DRAG_DATA_GET], 0, et->priv->drag_row, et->priv->drag_path, et->priv->drag_col, context, selection_data, info, time); } static void et_drag_data_delete(GtkWidget *widget, GdkDragContext *context, ETree *et) { g_signal_emit (et, et_signals[TREE_DRAG_DATA_DELETE], 0, et->priv->drag_row, et->priv->drag_path, et->priv->drag_col, context); } static gboolean do_drag_motion(ETree *et, GdkDragContext *context, gint x, gint y, guint time) { gboolean ret_val = FALSE; gint row, col; ETreePath path; e_tree_get_cell_at (et, x, y, &row, &col); if (row != et->priv->drop_row && col != et->priv->drop_col) { g_signal_emit (et, et_signals[TREE_DRAG_LEAVE], 0, et->priv->drop_row, et->priv->drop_path, et->priv->drop_col, context, time); } path = e_tree_table_adapter_node_at_row(et->priv->etta, row); et->priv->drop_row = row; et->priv->drop_path = path; et->priv->drop_col = col; g_signal_emit (et, et_signals[TREE_DRAG_MOTION], 0, et->priv->drop_row, et->priv->drop_path, et->priv->drop_col, context, x, y, time, &ret_val); return ret_val; } static gboolean scroll_timeout (gpointer data) { ETree *et = data; gint dx = 0, dy = 0; GtkAdjustment *adjustment; GtkLayout *layout; gdouble old_h_value; gdouble new_h_value; gdouble old_v_value; gdouble new_v_value; gdouble page_size; gdouble lower; gdouble upper; if (et->priv->scroll_direction & ET_SCROLL_DOWN) dy += 20; if (et->priv->scroll_direction & ET_SCROLL_UP) dy -= 20; if (et->priv->scroll_direction & ET_SCROLL_RIGHT) dx += 20; if (et->priv->scroll_direction & ET_SCROLL_LEFT) dx -= 20; layout = GTK_LAYOUT (et->priv->table_canvas); adjustment = gtk_layout_get_hadjustment (layout); page_size = gtk_adjustment_get_page_size (adjustment); lower = gtk_adjustment_get_lower (adjustment); upper = gtk_adjustment_get_upper (adjustment); old_h_value = gtk_adjustment_get_value (adjustment); new_h_value = CLAMP (old_h_value + dx, lower, upper - page_size); gtk_adjustment_set_value (adjustment, new_h_value); adjustment = gtk_layout_get_vadjustment (layout); page_size = gtk_adjustment_get_page_size (adjustment); lower = gtk_adjustment_get_lower (adjustment); upper = gtk_adjustment_get_upper (adjustment); old_v_value = gtk_adjustment_get_value (adjustment); new_v_value = CLAMP (old_v_value + dy, lower, upper - page_size); gtk_adjustment_set_value (adjustment, new_v_value); if (new_h_value != old_h_value || new_v_value != old_v_value) do_drag_motion ( et, et->priv->last_drop_context, et->priv->last_drop_x, et->priv->last_drop_y, et->priv->last_drop_time); return TRUE; } static void scroll_on (ETree *et, guint scroll_direction) { if (et->priv->scroll_idle_id == 0 || scroll_direction != et->priv->scroll_direction) { if (et->priv->scroll_idle_id != 0) g_source_remove (et->priv->scroll_idle_id); et->priv->scroll_direction = scroll_direction; et->priv->scroll_idle_id = g_timeout_add (100, scroll_timeout, et); } } static void scroll_off (ETree *et) { if (et->priv->scroll_idle_id) { g_source_remove (et->priv->scroll_idle_id); et->priv->scroll_idle_id = 0; } } static gboolean hover_timeout (gpointer data) { ETree *et = data; gint x = et->priv->hover_x; gint y = et->priv->hover_y; gint row, col; ETreePath path; e_tree_get_cell_at (et, x, y, &row, &col); path = e_tree_table_adapter_node_at_row(et->priv->etta, row); if (path && e_tree_model_node_is_expandable (et->priv->model, path)) { if (!e_tree_table_adapter_node_is_expanded (et->priv->etta, path)) { if (e_tree_model_has_save_id (et->priv->model) && e_tree_model_has_get_node_by_id (et->priv->model)) et->priv->expanded_list = g_list_prepend ( et->priv->expanded_list, e_tree_model_get_save_id ( et->priv->model, path)); e_tree_table_adapter_node_set_expanded ( et->priv->etta, path, TRUE); } } return TRUE; } static void hover_on (ETree *et, gint x, gint y) { et->priv->hover_x = x; et->priv->hover_y = y; if (et->priv->hover_idle_id != 0) g_source_remove (et->priv->hover_idle_id); et->priv->hover_idle_id = g_timeout_add (500, hover_timeout, et); } static void hover_off (ETree *et) { if (et->priv->hover_idle_id) { g_source_remove (et->priv->hover_idle_id); et->priv->hover_idle_id = 0; } } static void collapse_drag (ETree *et, ETreePath drop) { GList *list; /* We only want to leave open parents of the node dropped in. Not the node itself. */ if (drop) { drop = e_tree_model_node_get_parent (et->priv->model, drop); } for (list = et->priv->expanded_list; list; list = list->next) { gchar *save_id = list->data; ETreePath path; path = e_tree_model_get_node_by_id (et->priv->model, save_id); if (path) { ETreePath search; gboolean found = FALSE; for (search = drop; search; search = e_tree_model_node_get_parent ( et->priv->model, search)) { if (path == search) { found = TRUE; break; } } if (!found) e_tree_table_adapter_node_set_expanded ( et->priv->etta, path, FALSE); } g_free (save_id); } g_list_free (et->priv->expanded_list); et->priv->expanded_list = NULL; } static void context_destroyed (gpointer data, GObject *ctx) { ETree *et = data; if (et->priv) { et->priv->last_drop_x = 0; et->priv->last_drop_y = 0; et->priv->last_drop_time = 0; et->priv->last_drop_context = NULL; collapse_drag (et, NULL); scroll_off (et); hover_off (et); } g_object_unref (et); } static void context_connect (ETree *et, GdkDragContext *context) { if (context == et->priv->last_drop_context) return; if (et->priv->last_drop_context) g_object_weak_unref (G_OBJECT(et->priv->last_drop_context), context_destroyed, et); else g_object_ref (et); g_object_weak_ref (G_OBJECT(context), context_destroyed, et); } static void et_drag_leave(GtkWidget *widget, GdkDragContext *context, guint time, ETree *et) { g_signal_emit (et, et_signals[TREE_DRAG_LEAVE], 0, et->priv->drop_row, et->priv->drop_path, et->priv->drop_col, context, time); et->priv->drop_row = -1; et->priv->drop_col = -1; scroll_off (et); hover_off (et); } static gboolean et_drag_motion(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, ETree *et) { GtkAllocation allocation; gint ret_val; guint direction = 0; et->priv->last_drop_x = x; et->priv->last_drop_y = y; et->priv->last_drop_time = time; context_connect (et, context); et->priv->last_drop_context = context; if (et->priv->hover_idle_id != 0) { if (abs (et->priv->hover_x - x) > 3 || abs (et->priv->hover_y - y) > 3) { hover_on (et, x, y); } } else { hover_on (et, x, y); } ret_val = do_drag_motion (et, context, x, y, time); gtk_widget_get_allocation (widget, &allocation); if (y < 20) direction |= ET_SCROLL_UP; if (y > allocation.height - 20) direction |= ET_SCROLL_DOWN; if (x < 20) direction |= ET_SCROLL_LEFT; if (x > allocation.width - 20) direction |= ET_SCROLL_RIGHT; if (direction != 0) scroll_on (et, direction); else scroll_off (et); return ret_val; } static gboolean et_drag_drop(GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time, ETree *et) { gboolean ret_val = FALSE; gint row, col; ETreePath path; e_tree_get_cell_at(et, x, y, &row, &col); path = e_tree_table_adapter_node_at_row(et->priv->etta, row); if (row != et->priv->drop_row && col != et->priv->drop_row) { g_signal_emit (et, et_signals[TREE_DRAG_LEAVE], 0, et->priv->drop_row, et->priv->drop_path, et->priv->drop_col, context, time); g_signal_emit (et, et_signals[TREE_DRAG_MOTION], 0, row, path, col, context, x, y, time, &ret_val); } et->priv->drop_row = row; et->priv->drop_path = path; et->priv->drop_col = col; g_signal_emit (et, et_signals[TREE_DRAG_DROP], 0, et->priv->drop_row, et->priv->drop_path, et->priv->drop_col, context, x, y, time, &ret_val); et->priv->drop_row = -1; et->priv->drop_path = NULL; et->priv->drop_col = -1; collapse_drag (et, path); scroll_off (et); return ret_val; } static void et_drag_data_received(GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *selection_data, guint info, guint time, ETree *et) { gint row, col; ETreePath path; e_tree_get_cell_at(et, x, y, &row, &col); path = e_tree_table_adapter_node_at_row(et->priv->etta, row); g_signal_emit (et, et_signals[TREE_DRAG_DATA_RECEIVED], 0, row, path, col, context, x, y, selection_data, info, time); } static void e_tree_class_init (ETreeClass *class) { GObjectClass *object_class; GtkWidgetClass *widget_class; object_class = (GObjectClass *) class; widget_class = (GtkWidgetClass *) class; object_class->dispose = et_dispose; object_class->set_property = et_set_property; object_class->get_property = et_get_property; widget_class->grab_focus = et_grab_focus; widget_class->unrealize = et_unrealize; widget_class->style_set = et_canvas_style_set; widget_class->focus = et_focus; class->cursor_change = NULL; class->cursor_activated = NULL; class->selection_change = NULL; class->double_click = NULL; class->right_click = NULL; class->click = NULL; class->key_press = NULL; class->start_drag = et_real_start_drag; class->state_change = NULL; class->white_space_event = NULL; class->tree_drag_begin = NULL; class->tree_drag_end = NULL; class->tree_drag_data_get = NULL; class->tree_drag_data_delete = NULL; class->tree_drag_leave = NULL; class->tree_drag_motion = NULL; class->tree_drag_drop = NULL; class->tree_drag_data_received = NULL; et_signals[CURSOR_CHANGE] = g_signal_new ("cursor_change", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, cursor_change), NULL, NULL, e_marshal_NONE__INT_POINTER, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_POINTER); et_signals[CURSOR_ACTIVATED] = g_signal_new ("cursor_activated", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, cursor_activated), NULL, NULL, e_marshal_NONE__INT_POINTER, G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_POINTER); et_signals[SELECTION_CHANGE] = g_signal_new ("selection_change", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, selection_change), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); et_signals[DOUBLE_CLICK] = g_signal_new ("double_click", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, double_click), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_BOXED, G_TYPE_NONE, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_EVENT); et_signals[RIGHT_CLICK] = g_signal_new ("right_click", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, right_click), g_signal_accumulator_true_handled, NULL, e_marshal_BOOLEAN__INT_POINTER_INT_BOXED, G_TYPE_BOOLEAN, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_EVENT); et_signals[CLICK] = g_signal_new ("click", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, click), g_signal_accumulator_true_handled, NULL, e_marshal_BOOLEAN__INT_POINTER_INT_BOXED, G_TYPE_BOOLEAN, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_EVENT); et_signals[KEY_PRESS] = g_signal_new ("key_press", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, key_press), g_signal_accumulator_true_handled, NULL, e_marshal_BOOLEAN__INT_POINTER_INT_BOXED, G_TYPE_BOOLEAN, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_EVENT); et_signals[START_DRAG] = g_signal_new ("start_drag", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, start_drag), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_BOXED, G_TYPE_NONE, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_EVENT); et_signals[STATE_CHANGE] = g_signal_new ("state_change", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, state_change), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); et_signals[WHITE_SPACE_EVENT] = g_signal_new ("white_space_event", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, white_space_event), g_signal_accumulator_true_handled, NULL, e_marshal_BOOLEAN__POINTER, G_TYPE_BOOLEAN, 1, GDK_TYPE_EVENT); et_signals[TREE_DRAG_BEGIN] = g_signal_new ("tree_drag_begin", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_begin), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_BOXED, G_TYPE_NONE, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT); et_signals[TREE_DRAG_END] = g_signal_new ("tree_drag_end", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_end), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_BOXED, G_TYPE_NONE, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT); et_signals[TREE_DRAG_DATA_GET] = g_signal_new ("tree_drag_data_get", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_data_get), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_OBJECT_BOXED_UINT_UINT, G_TYPE_NONE, 7, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT, GTK_TYPE_SELECTION_DATA | G_SIGNAL_TYPE_STATIC_SCOPE, G_TYPE_UINT, G_TYPE_UINT); et_signals[TREE_DRAG_DATA_DELETE] = g_signal_new ("tree_drag_data_delete", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_data_delete), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_OBJECT, G_TYPE_NONE, 4, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT); et_signals[TREE_DRAG_LEAVE] = g_signal_new ("tree_drag_leave", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_leave), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_OBJECT_UINT, G_TYPE_NONE, 5, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT, G_TYPE_UINT); et_signals[TREE_DRAG_MOTION] = g_signal_new ("tree_drag_motion", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_motion), NULL, NULL, e_marshal_BOOLEAN__INT_POINTER_INT_OBJECT_INT_INT_UINT, G_TYPE_BOOLEAN, 7, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT, G_TYPE_INT, G_TYPE_INT, G_TYPE_UINT); et_signals[TREE_DRAG_DROP] = g_signal_new ("tree_drag_drop", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_drop), NULL, NULL, e_marshal_BOOLEAN__INT_POINTER_INT_OBJECT_INT_INT_UINT, G_TYPE_BOOLEAN, 7, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT, G_TYPE_INT, G_TYPE_INT, G_TYPE_UINT); et_signals[TREE_DRAG_DATA_RECEIVED] = g_signal_new ("tree_drag_data_received", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, tree_drag_data_received), NULL, NULL, e_marshal_NONE__INT_POINTER_INT_OBJECT_INT_INT_BOXED_UINT_UINT, G_TYPE_NONE, 9, G_TYPE_INT, G_TYPE_POINTER, G_TYPE_INT, GDK_TYPE_DRAG_CONTEXT, G_TYPE_INT, G_TYPE_INT, GTK_TYPE_SELECTION_DATA, G_TYPE_UINT, G_TYPE_UINT); class->set_scroll_adjustments = set_scroll_adjustments; widget_class->set_scroll_adjustments_signal = g_signal_new ("set_scroll_adjustments", G_OBJECT_CLASS_TYPE (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ETreeClass, set_scroll_adjustments), NULL, NULL, e_marshal_NONE__OBJECT_OBJECT, G_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); g_object_class_install_property (object_class, PROP_LENGTH_THRESHOLD, g_param_spec_int ("length_threshold", "Length Threshold", "Length Threshold", 0, G_MAXINT, 0, G_PARAM_WRITABLE)); g_object_class_install_property (object_class, PROP_HORIZONTAL_DRAW_GRID, g_param_spec_boolean ("horizontal_draw_grid", "Horizontal Draw Grid", "Horizontal Draw Grid", FALSE, G_PARAM_WRITABLE)); g_object_class_install_property (object_class, PROP_VERTICAL_DRAW_GRID, g_param_spec_boolean ("vertical_draw_grid", "Vertical Draw Grid", "Vertical Draw Grid", FALSE, G_PARAM_WRITABLE)); g_object_class_install_property (object_class, PROP_DRAW_FOCUS, g_param_spec_boolean ("drawfocus", "Draw focus", "Draw focus", FALSE, G_PARAM_WRITABLE)); g_object_class_install_property (object_class, PROP_ETTA, g_param_spec_object ("ETreeTableAdapter", "ETree table adapter", "ETree table adapter", E_TREE_TABLE_ADAPTER_TYPE, G_PARAM_READABLE)); g_object_class_install_property (object_class, PROP_UNIFORM_ROW_HEIGHT, g_param_spec_boolean ("uniform_row_height", "Uniform row height", "Uniform row height", FALSE, G_PARAM_READWRITE)); g_object_class_install_property (object_class, PROP_ALWAYS_SEARCH, g_param_spec_boolean ("always_search", "Always search", "Always search", FALSE, G_PARAM_READWRITE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_boolean ("retro_look", "Retro Look", "Draw lines and +/- expanders.", FALSE, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("expander_size", "Expander Size", "Size of the expander arrow", 0, G_MAXINT, 10, G_PARAM_READABLE)); gal_a11y_e_tree_init (); } static void tree_size_allocate (GtkWidget *widget, GtkAllocation *alloc, ETree *tree) { gdouble width; g_return_if_fail (tree != NULL); g_return_if_fail (tree->priv != NULL); g_return_if_fail (tree->priv->info_text != NULL); gnome_canvas_get_scroll_region ( GNOME_CANVAS (tree->priv->table_canvas), NULL, NULL, &width, NULL); width -= 60.0; g_object_set ( tree->priv->info_text, "width", width, "clip_width", width, NULL); } /** * e_tree_set_info_message: * @tree: #ETree instance * @info_message: Message to set. Can be NULL. * * Creates an info message in table area, or removes old. **/ void e_tree_set_info_message (ETree *tree, const gchar *info_message) { GtkAllocation allocation; GtkWidget *widget; g_return_if_fail (tree != NULL); g_return_if_fail (tree->priv != NULL); if (!tree->priv->info_text && (!info_message || !*info_message)) return; if (!info_message || !*info_message) { g_signal_handler_disconnect (tree, tree->priv->info_text_resize_id); gtk_object_destroy (GTK_OBJECT (tree->priv->info_text)); tree->priv->info_text = NULL; return; } widget = GTK_WIDGET (tree->priv->table_canvas); gtk_widget_get_allocation (widget, &allocation); if (!tree->priv->info_text) { tree->priv->info_text = gnome_canvas_item_new ( GNOME_CANVAS_GROUP (gnome_canvas_root (tree->priv->table_canvas)), e_text_get_type (), "anchor", GTK_ANCHOR_NW, "line_wrap", TRUE, "clip", TRUE, "justification", GTK_JUSTIFY_LEFT, "text", info_message, "draw_background", FALSE, "width", (gdouble) allocation.width - 60.0, "clip_width", (gdouble) allocation.width - 60.0, NULL); e_canvas_item_move_absolute (tree->priv->info_text, 30, 30); tree->priv->info_text_resize_id = g_signal_connect ( tree, "size_allocate", G_CALLBACK (tree_size_allocate), tree); } else gnome_canvas_item_set (tree->priv->info_text, "text", info_message, NULL); }