324 lines
8.9 KiB
C
324 lines
8.9 KiB
C
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/* Entry/Search Entry
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*
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* GtkEntry allows to display icons and progress information.
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* This demo shows how to use these features in a search entry.
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*/
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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static GtkWidget *window = NULL;
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static GtkWidget *notebook = NULL;
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static GSimpleActionGroup *actions = NULL;
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static guint search_progress_id = 0;
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static guint finish_search_id = 0;
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static void
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show_find_button (void)
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{
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gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), 0);
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}
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static void
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show_cancel_button (void)
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{
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gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), 1);
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}
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static gboolean
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search_progress (gpointer data)
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{
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gtk_entry_progress_pulse (GTK_ENTRY (data));
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return G_SOURCE_CONTINUE;
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}
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static void
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search_progress_done (GtkEntry *entry)
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{
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gtk_entry_set_progress_fraction (entry, 0.0);
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g_object_unref (entry);
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}
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static gboolean
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finish_search (GtkButton *button)
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{
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show_find_button ();
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if (search_progress_id)
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{
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g_source_remove (search_progress_id);
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search_progress_id = 0;
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}
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return G_SOURCE_REMOVE;
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}
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static gboolean
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start_search_feedback (gpointer data)
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{
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gtk_entry_set_progress_fraction (GTK_ENTRY (data), 0.1);
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search_progress_id = g_timeout_add_full (G_PRIORITY_DEFAULT, 100,
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(GSourceFunc)search_progress, g_object_ref (data),
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(GDestroyNotify)search_progress_done);
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return G_SOURCE_REMOVE;
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}
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static void
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start_search (GtkButton *button,
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GtkEntry *entry)
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{
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show_cancel_button ();
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search_progress_id = g_timeout_add_seconds (1, (GSourceFunc)start_search_feedback, entry);
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finish_search_id = g_timeout_add_seconds (15, (GSourceFunc)finish_search, button);
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}
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static void
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stop_search (GtkButton *button,
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gpointer data)
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{
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if (finish_search_id)
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{
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g_source_remove (finish_search_id);
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finish_search_id = 0;
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}
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finish_search (button);
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}
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static void
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clear_entry (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GtkEditable *editable = user_data;
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gtk_editable_set_text (editable, "");
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}
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static void
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set_search_by (GSimpleAction *action,
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GVariant *value,
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gpointer user_data)
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{
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GtkEntry *entry = user_data;
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const char *term;
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term = g_variant_get_string (value, NULL);
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g_simple_action_set_state (action, value);
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if (g_str_equal (term, "name"))
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{
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gtk_entry_set_icon_tooltip_text (entry, GTK_ENTRY_ICON_PRIMARY, "Search by name");
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gtk_entry_set_placeholder_text (entry, "Name…");
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}
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else if (g_str_equal (term, "description"))
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{
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gtk_entry_set_icon_tooltip_text (entry, GTK_ENTRY_ICON_PRIMARY, "Search by description");
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gtk_entry_set_placeholder_text (entry, "Description…");
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}
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else if (g_str_equal (term, "filename"))
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{
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gtk_entry_set_icon_tooltip_text (entry, GTK_ENTRY_ICON_PRIMARY, "Search by file name");
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gtk_entry_set_placeholder_text (entry, "File name…");
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}
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}
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static void
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icon_press_cb (GtkEntry *entry,
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int position,
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gpointer data)
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{
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if (position == GTK_ENTRY_ICON_PRIMARY)
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{
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GAction *action;
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GVariant *state;
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GVariant *new_state;
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const char *s;
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action = g_action_map_lookup_action (G_ACTION_MAP (actions), "search-by");
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state = g_action_get_state (action);
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s = g_variant_get_string (state, NULL);
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if (g_str_equal (s, "name"))
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new_state = g_variant_new_string ("description");
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else if (g_str_equal (s, "description"))
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new_state = g_variant_new_string ("filename");
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else if (g_str_equal (s, "filename"))
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new_state = g_variant_new_string ("name");
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else
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g_assert_not_reached ();
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g_action_change_state (action, new_state);
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g_variant_unref (state);
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}
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}
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static void
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activate_cb (GtkEntry *entry,
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GtkButton *button)
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{
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if (search_progress_id != 0)
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return;
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start_search (button, entry);
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}
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static void
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search_entry_destroyed (gpointer data,
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GObject *widget)
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{
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if (finish_search_id != 0)
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{
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g_source_remove (finish_search_id);
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finish_search_id = 0;
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}
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if (search_progress_id != 0)
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{
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g_source_remove (search_progress_id);
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search_progress_id = 0;
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}
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window = NULL;
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}
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static void
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text_changed (GObject *object,
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GParamSpec *pspec,
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gpointer data)
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{
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GtkEntry *entry = GTK_ENTRY (object);
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GActionMap *action_map = data;
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GAction *action;
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gboolean has_text;
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has_text = gtk_entry_get_text_length (entry) > 0;
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action = g_action_map_lookup_action (action_map, "clear");
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g_simple_action_set_enabled (G_SIMPLE_ACTION (action), has_text);
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}
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static GMenuModel *
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create_search_menu_model (void)
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{
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GMenu *menu = g_menu_new ();
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g_menu_append (menu, _("Name"), "search.search-by::name");
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g_menu_append (menu, _("Description"), "search.search-by::description");
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g_menu_append (menu, _("File Name"), "search.search-by::filename");
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return G_MENU_MODEL (menu);
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}
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static void
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entry_add_to_context_menu (GtkEntry *entry)
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{
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GMenu *menu;
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GActionEntry entries[] = {
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{ "clear", clear_entry, NULL, NULL, NULL },
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{ "search-by", NULL, "s", "'name'", set_search_by }
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};
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GMenuModel *submenu;
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GMenuItem *item;
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GAction *action;
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GVariant *value;
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actions = g_simple_action_group_new ();
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g_action_map_add_action_entries (G_ACTION_MAP (actions), entries, G_N_ELEMENTS(entries), entry);
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gtk_widget_insert_action_group (GTK_WIDGET (entry), "search", G_ACTION_GROUP (actions));
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action = g_action_map_lookup_action (G_ACTION_MAP (actions), "search-by");
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value = g_variant_ref_sink (g_variant_new_string ("name"));
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set_search_by (G_SIMPLE_ACTION (action), value, entry);
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g_variant_unref (value);
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menu = g_menu_new ();
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item = g_menu_item_new (_("C_lear"), "search.clear");
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g_menu_item_set_attribute (item, "touch-icon", "s", "edit-clear-symbolic");
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g_menu_append_item (G_MENU (menu), item);
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g_object_unref (item);
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submenu = create_search_menu_model ();
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g_menu_append_submenu (menu, _("Search By"), submenu);
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g_object_unref (submenu);
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gtk_entry_set_extra_menu (entry, G_MENU_MODEL (menu));
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g_object_unref (menu);
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g_signal_connect (entry, "notify::text", G_CALLBACK (text_changed), actions);
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}
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GtkWidget *
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do_search_entry (GtkWidget *do_widget)
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{
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GtkWidget *vbox;
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GtkWidget *hbox;
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GtkWidget *entry;
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GtkWidget *find_button;
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GtkWidget *cancel_button;
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if (!window)
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{
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window = gtk_window_new ();
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gtk_window_set_display (GTK_WINDOW (window), gtk_widget_get_display (do_widget));
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gtk_window_set_title (GTK_WINDOW (window), "Search Entry");
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gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
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g_object_weak_ref (G_OBJECT (window), search_entry_destroyed, &window);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
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gtk_widget_set_margin_start (vbox, 18);
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gtk_widget_set_margin_end (vbox, 18);
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gtk_widget_set_margin_top (vbox, 18);
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gtk_widget_set_margin_bottom (vbox, 18);
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gtk_window_set_child (GTK_WINDOW (window), vbox);
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
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gtk_box_append (GTK_BOX (vbox), hbox);
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/* Create our entry */
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entry = gtk_entry_new ();
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gtk_entry_set_icon_from_icon_name (GTK_ENTRY (entry),
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GTK_ENTRY_ICON_PRIMARY,
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"edit-find-symbolic");
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gtk_box_append (GTK_BOX (hbox), entry);
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/* Create the find and cancel buttons */
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notebook = gtk_notebook_new ();
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gtk_notebook_set_show_tabs (GTK_NOTEBOOK (notebook), FALSE);
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gtk_notebook_set_show_border (GTK_NOTEBOOK (notebook), FALSE);
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gtk_box_append (GTK_BOX (hbox), notebook);
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find_button = gtk_button_new_with_label ("Find");
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g_signal_connect (find_button, "clicked",
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G_CALLBACK (start_search), entry);
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gtk_notebook_append_page (GTK_NOTEBOOK (notebook), find_button, NULL);
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cancel_button = gtk_button_new_with_label ("Cancel");
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g_signal_connect (cancel_button, "clicked",
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G_CALLBACK (stop_search), NULL);
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gtk_notebook_append_page (GTK_NOTEBOOK (notebook), cancel_button, NULL);
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/* Set up the search icon */
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gtk_entry_set_icon_activatable (GTK_ENTRY (entry), GTK_ENTRY_ICON_PRIMARY, TRUE);
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gtk_entry_set_icon_sensitive (GTK_ENTRY (entry), GTK_ENTRY_ICON_PRIMARY, TRUE);
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g_signal_connect (entry, "icon-press", G_CALLBACK (icon_press_cb), NULL);
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g_signal_connect (entry, "activate", G_CALLBACK (activate_cb), NULL);
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/* add accessible alternatives for icon functionality */
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entry_add_to_context_menu (GTK_ENTRY (entry));
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_set_visible (window, TRUE);
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else
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{
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g_clear_object (&actions);
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gtk_window_destroy (GTK_WINDOW (window));
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}
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return window;
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}
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