96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
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/* Shortcuts
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* #Keywords: GtkShortcutController
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*
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* GtkShortcut is the abstraction used by GTK to handle shortcuts from
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* keyboard or other input devices.
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*
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* Shortcut triggers can be used to weave complex sequences of key
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* presses into sophisticated mechanisms to activate shortcuts.
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*
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* This demo code shows creative ways to do that.
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*/
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#include <gtk/gtk.h>
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static GtkWidget *window = NULL;
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static gboolean
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shortcut_activated (GtkWidget *widget,
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GVariant *unused,
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gpointer row)
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{
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g_print ("activated %s\n", gtk_label_get_label (row));
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return TRUE;
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}
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static GtkShortcutTrigger *
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create_ctrl_g (void)
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{
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return gtk_keyval_trigger_new (GDK_KEY_g, GDK_CONTROL_MASK);
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}
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static GtkShortcutTrigger *
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create_x (void)
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{
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return gtk_keyval_trigger_new (GDK_KEY_x, 0);
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}
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struct {
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const char *description;
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GtkShortcutTrigger * (* create_trigger_func) (void);
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} shortcuts[] = {
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{ "Press Ctrl-G", create_ctrl_g },
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{ "Press X", create_x },
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};
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GtkWidget *
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do_shortcut_triggers (GtkWidget *do_widget)
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{
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guint i;
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if (!window)
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{
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GtkWidget *list;
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GtkEventController *controller;
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window = gtk_window_new ();
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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gtk_window_set_title (GTK_WINDOW (window), "Shortcuts");
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gtk_window_set_default_size (GTK_WINDOW (window), 200, -1);
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gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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list = gtk_list_box_new ();
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gtk_widget_set_margin_top (list, 6);
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gtk_widget_set_margin_bottom (list, 6);
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gtk_widget_set_margin_start (list, 6);
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gtk_widget_set_margin_end (list, 6);
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gtk_window_set_child (GTK_WINDOW (window), list);
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for (i = 0; i < G_N_ELEMENTS (shortcuts); i++)
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{
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GtkShortcut *shortcut;
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GtkWidget *row;
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row = gtk_label_new (shortcuts[i].description);
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gtk_list_box_insert (GTK_LIST_BOX (list), row, -1);
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controller = gtk_shortcut_controller_new ();
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gtk_shortcut_controller_set_scope (GTK_SHORTCUT_CONTROLLER (controller), GTK_SHORTCUT_SCOPE_GLOBAL);
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gtk_widget_add_controller (row, controller);
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shortcut = gtk_shortcut_new (shortcuts[i].create_trigger_func(),
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gtk_callback_action_new (shortcut_activated, row, NULL));
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gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (controller), shortcut);
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}
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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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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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