C++ (Cpp) gtk_overlay_set_overlay_pass_through Exemples

Exemple #1

Fichier : gp-menu-button-applet.c Projet : GNOME/gnome-panel

static void
setup_button (GpMenuButtonApplet *menu_button)
{
  GpMenuButtonAppletPrivate *priv;
  GtkWidget *overlay;
  gboolean show_arrow;
  GtkStyleContext *style;
  guint icon_size;
  guint arrow_size;
  gchar *tooltip;

  priv = gp_menu_button_applet_get_instance_private (menu_button);

  priv->button = gp_menu_button_new ();
  gtk_container_add (GTK_CONTAINER (menu_button), priv->button);
  gtk_widget_show (priv->button);

  g_signal_connect (priv->button, "button-press-event",
                    G_CALLBACK (button_press_event_cb), menu_button);

  g_signal_connect (priv->button, "clicked",
                    G_CALLBACK (clicked_cb), menu_button);

  overlay = gtk_overlay_new ();
  gtk_container_add (GTK_CONTAINER (priv->button), overlay);
  gtk_widget_set_halign (overlay, GTK_ALIGN_FILL);
  gtk_widget_set_valign (overlay, GTK_ALIGN_FILL);
  gtk_widget_show (overlay);

  priv->image = gtk_image_new ();
  gtk_container_add (GTK_CONTAINER (overlay), priv->image);
  gtk_widget_show (priv->image);

  style = gtk_widget_get_style_context (priv->image);
  gtk_style_context_add_class (style, "icon");

  show_arrow = g_settings_get_boolean (priv->settings, "show-arrow");

  priv->arrow = gtk_image_new_from_icon_name ("go-down-symbolic", GTK_ICON_SIZE_MENU);
  gtk_overlay_add_overlay (GTK_OVERLAY (overlay), priv->arrow);
  gtk_overlay_set_overlay_pass_through (GTK_OVERLAY (overlay), priv->arrow, TRUE);
  gtk_widget_set_visible (priv->arrow, show_arrow);

  style = gtk_widget_get_style_context (priv->arrow);
  gtk_style_context_add_class (style, "arrow");

  icon_size = gp_applet_get_panel_icon_size (GP_APPLET (menu_button));
  gtk_image_set_pixel_size (GTK_IMAGE (priv->image), icon_size);

  arrow_size = arrow_size_from_icon_size (icon_size);
  gtk_image_set_pixel_size (GTK_IMAGE (priv->arrow), arrow_size);

  tooltip = g_settings_get_string (priv->settings, "tooltip");
  gtk_widget_set_tooltip_text (priv->button, *tooltip != '\0' ? tooltip : NULL);
  g_free (tooltip);

  g_object_bind_property (menu_button, "enable-tooltips",
                          priv->button, "has-tooltip",
                          G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);

  update_menu (menu_button);
  update_icon (menu_button);
}

Exemple #2

Fichier : overlay.c Projet : GYGit/gtk

GtkWidget *
do_overlay (GtkWidget *do_widget)
{
  static GtkWidget *window = NULL;

  if (!window)
    {
      GtkWidget *overlay;
      GtkWidget *grid;
      GtkWidget *button;
      GtkWidget *vbox;
      GtkWidget *label;
      GtkWidget *entry;
      int i, j;
      char *text;

      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
      gtk_window_set_default_size (GTK_WINDOW (window), 500, 510);
      gtk_window_set_title (GTK_WINDOW (window), "Interactive Overlay");

      overlay = gtk_overlay_new ();
      grid = gtk_grid_new ();
      gtk_container_add (GTK_CONTAINER (overlay), grid);

      entry = gtk_entry_new ();

      for (j = 0; j < 5; j++)
        {
          for (i = 0; i < 5; i++)
            {
              text = g_strdup_printf ("%d", 5*j + i);
              button = gtk_button_new_with_label (text);
              g_free (text);
              gtk_widget_set_hexpand (button, TRUE);
              gtk_widget_set_vexpand (button, TRUE);
              g_signal_connect (button, "clicked", G_CALLBACK (do_number), entry);
              gtk_grid_attach (GTK_GRID (grid), button, i, j, 1, 1);
            }
        }

      vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
      gtk_overlay_add_overlay (GTK_OVERLAY (overlay), vbox);
      gtk_overlay_set_overlay_pass_through (GTK_OVERLAY (overlay), vbox, TRUE);
      gtk_widget_set_halign (vbox, GTK_ALIGN_CENTER);
      gtk_widget_set_valign (vbox, GTK_ALIGN_CENTER);

      label = gtk_label_new ("<span foreground='blue' weight='ultrabold' font='40'>Numbers</span>");
      gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 8);

      gtk_entry_set_placeholder_text (GTK_ENTRY (entry), "Your Lucky Number");
      gtk_box_pack_start (GTK_BOX (vbox), entry, FALSE, FALSE, 8);

      gtk_container_add (GTK_CONTAINER (window), overlay);

      g_signal_connect (window, "destroy",
                        G_CALLBACK (gtk_widget_destroyed), &window);

      gtk_widget_show_all (overlay);
    }

  if (!gtk_widget_get_visible (window))
    gtk_widget_show (window);
  else
    gtk_widget_destroy (window);

  return window;
}