mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-17 23:10:22 +00:00
338b5f6c2d
Add support for a stateful action associated with a submenu. The action state is set to TRUE when the menu is shown and FALSE when it is unshown. This is useful to avoid unnecessary processing for menus that have frequently-changing content. A possible future feature is to add support for asynchronously filling the initial state of the menu by waiting until the action actually emits its state-change signal to TRUE before showing the menu. A silly example has been added to Bloatpad to demonstrate the new feature. https://bugzilla.gnome.org/show_bug.cgi?id=682630
444 lines
14 KiB
C
444 lines
14 KiB
C
#include <stdlib.h>
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#include <gtk/gtk.h>
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static void
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activate_toggle (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GVariant *state;
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state = g_action_get_state (G_ACTION (action));
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g_action_change_state (G_ACTION (action), g_variant_new_boolean (!g_variant_get_boolean (state)));
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g_variant_unref (state);
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}
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static void
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activate_radio (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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g_action_change_state (G_ACTION (action), parameter);
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}
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static void
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change_fullscreen_state (GSimpleAction *action,
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GVariant *state,
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gpointer user_data)
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{
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if (g_variant_get_boolean (state))
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gtk_window_fullscreen (user_data);
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else
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gtk_window_unfullscreen (user_data);
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g_simple_action_set_state (action, state);
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}
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static void
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change_justify_state (GSimpleAction *action,
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GVariant *state,
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gpointer user_data)
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{
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GtkTextView *text = g_object_get_data (user_data, "bloatpad-text");
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const gchar *str;
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str = g_variant_get_string (state, NULL);
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if (g_str_equal (str, "left"))
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gtk_text_view_set_justification (text, GTK_JUSTIFY_LEFT);
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else if (g_str_equal (str, "center"))
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gtk_text_view_set_justification (text, GTK_JUSTIFY_CENTER);
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else if (g_str_equal (str, "right"))
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gtk_text_view_set_justification (text, GTK_JUSTIFY_RIGHT);
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else
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/* ignore this attempted change */
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return;
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g_simple_action_set_state (action, state);
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}
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static GtkClipboard *
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get_clipboard (GtkWidget *widget)
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{
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return gtk_widget_get_clipboard (widget, gdk_atom_intern_static_string ("CLIPBOARD"));
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}
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static void
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window_copy (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GtkWindow *window = GTK_WINDOW (user_data);
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GtkTextView *text = g_object_get_data ((GObject*)window, "bloatpad-text");
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gtk_text_buffer_copy_clipboard (gtk_text_view_get_buffer (text),
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get_clipboard ((GtkWidget*) text));
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}
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static void
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window_paste (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GtkWindow *window = GTK_WINDOW (user_data);
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GtkTextView *text = g_object_get_data ((GObject*)window, "bloatpad-text");
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gtk_text_buffer_paste_clipboard (gtk_text_view_get_buffer (text),
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get_clipboard ((GtkWidget*) text),
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NULL,
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TRUE);
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}
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static GActionEntry win_entries[] = {
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{ "copy", window_copy, NULL, NULL, NULL },
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{ "paste", window_paste, NULL, NULL, NULL },
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{ "fullscreen", activate_toggle, NULL, "false", change_fullscreen_state },
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{ "justify", activate_radio, "s", "'left'", change_justify_state }
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};
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static void
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new_window (GApplication *app,
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GFile *file)
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{
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GtkWidget *window, *grid, *scrolled, *view;
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GtkWidget *toolbar;
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GtkToolItem *button;
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GtkWidget *sw, *box, *label;
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window = gtk_application_window_new (GTK_APPLICATION (app));
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gtk_window_set_default_size ((GtkWindow*)window, 640, 480);
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g_action_map_add_action_entries (G_ACTION_MAP (window), win_entries, G_N_ELEMENTS (win_entries), window);
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gtk_window_set_title (GTK_WINDOW (window), "Bloatpad");
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grid = gtk_grid_new ();
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gtk_container_add (GTK_CONTAINER (window), grid);
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toolbar = gtk_toolbar_new ();
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button = gtk_toggle_tool_button_new_from_stock (GTK_STOCK_JUSTIFY_LEFT);
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gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (button), "win.justify::left");
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gtk_container_add (GTK_CONTAINER (toolbar), GTK_WIDGET (button));
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button = gtk_toggle_tool_button_new_from_stock (GTK_STOCK_JUSTIFY_CENTER);
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gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (button), "win.justify::center");
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gtk_container_add (GTK_CONTAINER (toolbar), GTK_WIDGET (button));
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button = gtk_toggle_tool_button_new_from_stock (GTK_STOCK_JUSTIFY_RIGHT);
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gtk_actionable_set_detailed_action_name (GTK_ACTIONABLE (button), "win.justify::right");
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gtk_container_add (GTK_CONTAINER (toolbar), GTK_WIDGET (button));
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button = gtk_separator_tool_item_new ();
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gtk_separator_tool_item_set_draw (GTK_SEPARATOR_TOOL_ITEM (button), FALSE);
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gtk_tool_item_set_expand (GTK_TOOL_ITEM (button), TRUE);
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gtk_container_add (GTK_CONTAINER (toolbar), GTK_WIDGET (button));
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button = gtk_tool_item_new ();
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
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gtk_container_add (GTK_CONTAINER (button), box);
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label = gtk_label_new ("Fullscreen:");
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gtk_container_add (GTK_CONTAINER (box), label);
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sw = gtk_switch_new ();
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gtk_actionable_set_action_name (GTK_ACTIONABLE (sw), "win.fullscreen");
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gtk_container_add (GTK_CONTAINER (box), sw);
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gtk_container_add (GTK_CONTAINER (toolbar), GTK_WIDGET (button));
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gtk_grid_attach (GTK_GRID (grid), toolbar, 0, 0, 1, 1);
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scrolled = gtk_scrolled_window_new (NULL, NULL);
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gtk_widget_set_hexpand (scrolled, TRUE);
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gtk_widget_set_vexpand (scrolled, TRUE);
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view = gtk_text_view_new ();
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g_object_set_data ((GObject*)window, "bloatpad-text", view);
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gtk_container_add (GTK_CONTAINER (scrolled), view);
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gtk_grid_attach (GTK_GRID (grid), scrolled, 0, 1, 1, 1);
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if (file != NULL)
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{
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gchar *contents;
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gsize length;
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if (g_file_load_contents (file, NULL, &contents, &length, NULL, NULL))
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{
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GtkTextBuffer *buffer;
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buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
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gtk_text_buffer_set_text (buffer, contents, length);
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g_free (contents);
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}
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}
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gtk_widget_show_all (GTK_WIDGET (window));
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}
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static void
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bloat_pad_activate (GApplication *application)
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{
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new_window (application, NULL);
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}
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static void
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bloat_pad_open (GApplication *application,
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GFile **files,
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gint n_files,
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const gchar *hint)
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{
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gint i;
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for (i = 0; i < n_files; i++)
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new_window (application, files[i]);
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}
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typedef struct
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{
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GtkApplication parent_instance;
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GMenu *time;
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guint timeout;
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} BloatPad;
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typedef GtkApplicationClass BloatPadClass;
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G_DEFINE_TYPE (BloatPad, bloat_pad, GTK_TYPE_APPLICATION)
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static void
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bloat_pad_finalize (GObject *object)
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{
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G_OBJECT_CLASS (bloat_pad_parent_class)->finalize (object);
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}
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static void
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new_activated (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GApplication *app = user_data;
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g_application_activate (app);
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}
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static void
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about_activated (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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gtk_show_about_dialog (NULL,
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"program-name", "Bloatpad",
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"title", "About Bloatpad",
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"comments", "Not much to say, really.",
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NULL);
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}
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static void
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quit_activated (GSimpleAction *action,
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GVariant *parameter,
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gpointer user_data)
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{
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GApplication *app = user_data;
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g_application_quit (app);
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}
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static gboolean
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update_time (gpointer user_data)
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{
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BloatPad *bloatpad = user_data;
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GDateTime *now;
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gchar *time;
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while (g_menu_model_get_n_items (G_MENU_MODEL (bloatpad->time)))
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g_menu_remove (bloatpad->time, 0);
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g_message ("Updating the time menu (which should be open now)...");
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now = g_date_time_new_now_local ();
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time = g_date_time_format (now, "%c");
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g_menu_append (bloatpad->time, time, NULL);
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g_date_time_unref (now);
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g_free (time);
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return G_SOURCE_CONTINUE;
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}
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static void
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time_active_changed (GSimpleAction *action,
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GVariant *state,
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gpointer user_data)
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{
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BloatPad *bloatpad = user_data;
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if (g_variant_get_boolean (state))
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{
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if (!bloatpad->timeout)
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{
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bloatpad->timeout = g_timeout_add (1000, update_time, bloatpad);
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update_time (bloatpad);
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}
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}
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else
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{
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if (bloatpad->timeout)
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{
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g_source_remove (bloatpad->timeout);
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bloatpad->timeout = 0;
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}
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}
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g_simple_action_set_state (action, state);
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}
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static GActionEntry app_entries[] = {
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{ "new", new_activated, NULL, NULL, NULL },
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{ "about", about_activated, NULL, NULL, NULL },
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{ "quit", quit_activated, NULL, NULL, NULL },
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{ "time-active", NULL, NULL, "false", time_active_changed }
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};
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static void
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bloat_pad_startup (GApplication *application)
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{
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BloatPad *bloatpad = (BloatPad*) application;
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GtkBuilder *builder;
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G_APPLICATION_CLASS (bloat_pad_parent_class)
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->startup (application);
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g_action_map_add_action_entries (G_ACTION_MAP (application), app_entries, G_N_ELEMENTS (app_entries), application);
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builder = gtk_builder_new ();
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gtk_builder_add_from_string (builder,
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"<interface>"
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" <menu id='app-menu'>"
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" <section>"
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" <item>"
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" <attribute name='label' translatable='yes'>_New Window</attribute>"
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" <attribute name='action'>app.new</attribute>"
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" <attribute name='accel'><Primary>n</attribute>"
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" </item>"
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" </section>"
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" <section>"
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" <item>"
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" <attribute name='label' translatable='yes'>_About Bloatpad</attribute>"
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" <attribute name='action'>app.about</attribute>"
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" </item>"
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" </section>"
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" <section>"
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" <item>"
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" <attribute name='label' translatable='yes'>_Quit</attribute>"
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" <attribute name='action'>app.quit</attribute>"
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" <attribute name='accel'><Primary>q</attribute>"
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" </item>"
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" </section>"
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" </menu>"
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" <menu id='menubar'>"
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" <submenu>"
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" <attribute name='label' translatable='yes'>_Edit</attribute>"
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" <section>"
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" <item>"
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" <attribute name='label' translatable='yes'>_Copy</attribute>"
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" <attribute name='action'>win.copy</attribute>"
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" <attribute name='accel'><Primary>c</attribute>"
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" </item>"
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" <item>"
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" <attribute name='label' translatable='yes'>_Paste</attribute>"
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" <attribute name='action'>win.paste</attribute>"
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" <attribute name='accel'><Primary>v</attribute>"
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" </item>"
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" </section>"
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" </submenu>"
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" <submenu>"
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" <attribute name='label' translatable='yes'>_View</attribute>"
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" <section>"
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" <item>"
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" <attribute name='label' translatable='yes'>_Fullscreen</attribute>"
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" <attribute name='action'>win.fullscreen</attribute>"
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" <attribute name='accel'>F11</attribute>"
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" </item>"
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" </section>"
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" </submenu>"
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" <submenu id='time-menu'>"
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" <attribute name='label' translatable='yes'>Time</attribute>"
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" <attribute name='submenu-action'>app.time-active</attribute>"
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" </submenu>"
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" </menu>"
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"</interface>", -1, NULL);
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gtk_application_set_app_menu (GTK_APPLICATION (application), G_MENU_MODEL (gtk_builder_get_object (builder, "app-menu")));
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gtk_application_set_menubar (GTK_APPLICATION (application), G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
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bloatpad->time = G_MENU (gtk_builder_get_object (builder, "time-menu"));
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g_object_unref (builder);
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}
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static void
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bloat_pad_shutdown (GApplication *application)
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{
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BloatPad *bloatpad = (BloatPad *) application;
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if (bloatpad->timeout)
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{
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g_source_remove (bloatpad->timeout);
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bloatpad->timeout = 0;
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}
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G_APPLICATION_CLASS (bloat_pad_parent_class)
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->shutdown (application);
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}
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static void
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bloat_pad_init (BloatPad *app)
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{
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}
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static void
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bloat_pad_class_init (BloatPadClass *class)
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{
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GApplicationClass *application_class = G_APPLICATION_CLASS (class);
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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application_class->startup = bloat_pad_startup;
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application_class->shutdown = bloat_pad_shutdown;
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application_class->activate = bloat_pad_activate;
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application_class->open = bloat_pad_open;
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object_class->finalize = bloat_pad_finalize;
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}
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BloatPad *
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bloat_pad_new (void)
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{
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BloatPad *bloat_pad;
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g_type_init ();
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g_set_application_name ("Bloatpad");
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bloat_pad = g_object_new (bloat_pad_get_type (),
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"application-id", "org.gtk.Test.bloatpad",
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"flags", G_APPLICATION_HANDLES_OPEN,
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"inactivity-timeout", 30000,
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"register-session", TRUE,
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NULL);
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return bloat_pad;
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}
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int
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main (int argc, char **argv)
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{
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BloatPad *bloat_pad;
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int status;
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bloat_pad = bloat_pad_new ();
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gtk_application_add_accelerator (GTK_APPLICATION (bloat_pad),
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"F11", "win.fullscreen", NULL);
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status = g_application_run (G_APPLICATION (bloat_pad), argc, argv);
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g_object_unref (bloat_pad);
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return status;
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}
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