gtkfontsel.c

gtk是linux一款强大的夸平台的图形化开发工具

						      gchar          *spacing,
						      gchar	     *charset);


/* FontSelectionDialog */
static void    gtk_font_selection_dialog_class_init  (GtkFontSelectionDialogClass *klass);
static void    gtk_font_selection_dialog_init	     (GtkFontSelectionDialog *fontseldiag);

static gint    gtk_font_selection_dialog_on_configure(GtkWidget      *widget,
						      GdkEventConfigure *event,
						      GtkFontSelectionDialog *fsd);

static GtkWindowClass *font_selection_parent_class = NULL;
static GtkNotebookClass *font_selection_dialog_parent_class = NULL;

GtkType
gtk_font_selection_get_type()
{
  static GtkType font_selection_type = 0;
  
  if(!font_selection_type)
    {
      static const GtkTypeInfo fontsel_type_info =
      {
	"GtkFontSelection",
	sizeof (GtkFontSelection),
	sizeof (GtkFontSelectionClass),
	(GtkClassInitFunc) gtk_font_selection_class_init,
	(GtkObjectInitFunc) gtk_font_selection_init,
	/* reserved_1 */ NULL,
	/* reserved_2 */ NULL,
        (GtkClassInitFunc) NULL,
      };
      
      font_selection_type = gtk_type_unique (GTK_TYPE_NOTEBOOK,
					     &fontsel_type_info);
    }
  
  return font_selection_type;
}

static void
gtk_font_selection_class_init(GtkFontSelectionClass *klass)
{
  GtkObjectClass *object_class;
  
  object_class = (GtkObjectClass *) klass;
  
  font_selection_parent_class = gtk_type_class (GTK_TYPE_NOTEBOOK);
  
  object_class->destroy = gtk_font_selection_destroy;
  
  gtk_font_selection_get_fonts ();
}

static void
gtk_font_selection_init(GtkFontSelection *fontsel)
{
  GtkWidget *scrolled_win;
  GtkWidget *text_frame;
  GtkWidget *text_box, *frame;
  GtkWidget *table, *label, *hbox, *hbox2, *clist, *button, *vbox, *alignment;
  gint i, prop, row;
  gchar *titles[] = { NULL, NULL, NULL };
  gchar buffer[128];
  gchar *size;
  gint size_to_match;
  gchar *row_text[3];
  gchar *property, *text;
  gboolean inserted;
  
  /* Number of internationalized titles here must match number
     of NULL initializers above */
  titles[0] = _("Font Property");
  titles[1] = _("Requested Value");
  titles[2] = _("Actual Value");

  /* Initialize the GtkFontSelection struct. We do this here in case any
     callbacks are triggered while creating the interface. */
  fontsel->font = NULL;
  fontsel->font_index = -1;
  fontsel->style = -1;
  fontsel->metric = INITIAL_METRIC;
  fontsel->size = INITIAL_FONT_SIZE;
  fontsel->selected_size = INITIAL_FONT_SIZE;

  fontsel->filters[GTK_FONT_FILTER_BASE].font_type = GTK_FONT_ALL;
  fontsel->filters[GTK_FONT_FILTER_USER].font_type = GTK_FONT_BITMAP
    | GTK_FONT_SCALABLE;

  
  for (prop = 0; prop < GTK_NUM_FONT_PROPERTIES; prop++)
    {
      fontsel->filters[GTK_FONT_FILTER_BASE].property_filters[prop] = NULL;
      fontsel->filters[GTK_FONT_FILTER_BASE].property_nfilters[prop] = 0;
      fontsel->filters[GTK_FONT_FILTER_USER].property_filters[prop] = NULL;
      fontsel->filters[GTK_FONT_FILTER_USER].property_nfilters[prop] = 0;
    }
  
  for (prop = 0; prop < GTK_NUM_STYLE_PROPERTIES; prop++)
    fontsel->property_values[prop] = 0;
  
  /* Create the main notebook page. */
  gtk_notebook_set_homogeneous_tabs (GTK_NOTEBOOK (fontsel), TRUE);
  gtk_notebook_set_tab_hborder (GTK_NOTEBOOK (fontsel), 8);
  fontsel->main_vbox = gtk_vbox_new (FALSE, 4);
  gtk_widget_show (fontsel->main_vbox);
  gtk_container_set_border_width (GTK_CONTAINER (fontsel->main_vbox), 6);
  label = gtk_label_new(_("Font"));
  gtk_notebook_append_page (GTK_NOTEBOOK (fontsel),
			    fontsel->main_vbox, label);
  
  /* Create the table of font, style & size. */
  table = gtk_table_new (3, 3, FALSE);
  gtk_widget_show (table);
  gtk_table_set_col_spacings(GTK_TABLE(table), 8);
  gtk_box_pack_start (GTK_BOX (fontsel->main_vbox), table, TRUE, TRUE, 0);
  
  fontsel->font_label = gtk_label_new(_("Font:"));
  gtk_misc_set_alignment (GTK_MISC (fontsel->font_label), 0.0, 0.5);
  gtk_widget_show (fontsel->font_label);
  gtk_table_attach (GTK_TABLE (table), fontsel->font_label, 0, 1, 0, 1,
		    GTK_FILL, 0, 0, 0);
  label = gtk_label_new(_("Font Style:"));
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_widget_show (label);
  gtk_table_attach (GTK_TABLE (table), label, 1, 2, 0, 1,
		    GTK_FILL, 0, 0, 0);
  label = gtk_label_new(_("Size:"));
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_widget_show (label);
  gtk_table_attach (GTK_TABLE (table), label, 2, 3, 0, 1,
		    GTK_FILL, 0, 0, 0);
  
  fontsel->font_entry = gtk_entry_new();
  gtk_entry_set_editable(GTK_ENTRY(fontsel->font_entry), FALSE);
  gtk_widget_set_usize (fontsel->font_entry, 20, -1);
  gtk_widget_show (fontsel->font_entry);
  gtk_table_attach (GTK_TABLE (table), fontsel->font_entry, 0, 1, 1, 2,
		    GTK_FILL, 0, 0, 0);
  fontsel->font_style_entry = gtk_entry_new();
  gtk_entry_set_editable(GTK_ENTRY(fontsel->font_style_entry), FALSE);
  gtk_widget_set_usize (fontsel->font_style_entry, 20, -1);
  gtk_widget_show (fontsel->font_style_entry);
  gtk_table_attach (GTK_TABLE (table), fontsel->font_style_entry, 1, 2, 1, 2,
		    GTK_FILL, 0, 0, 0);
  fontsel->size_entry = gtk_entry_new();
  gtk_widget_set_usize (fontsel->size_entry, 20, -1);
  gtk_widget_show (fontsel->size_entry);
  gtk_table_attach (GTK_TABLE (table), fontsel->size_entry, 2, 3, 1, 2,
		    GTK_FILL, 0, 0, 0);
  gtk_signal_connect (GTK_OBJECT (fontsel->size_entry), "key_press_event",
		      (GtkSignalFunc) gtk_font_selection_size_key_press,
		      fontsel);
  
  /* Create the clists  */
  fontsel->font_clist = gtk_clist_new(1);
  gtk_clist_column_titles_hide (GTK_CLIST(fontsel->font_clist));
  gtk_clist_set_column_auto_resize (GTK_CLIST (fontsel->font_clist), 0, TRUE);
  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_widget_set_usize (scrolled_win, FONT_LIST_WIDTH, FONT_LIST_HEIGHT);
  gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->font_clist);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
				  GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
  gtk_widget_show(fontsel->font_clist);
  gtk_widget_show(scrolled_win);

  gtk_table_attach (GTK_TABLE (table), scrolled_win, 0, 1, 2, 3,
		    GTK_EXPAND | GTK_FILL,
		    GTK_EXPAND | GTK_FILL, 0, 0);
  
  fontsel->font_style_clist = gtk_clist_new(1);
  gtk_clist_column_titles_hide (GTK_CLIST(fontsel->font_style_clist));
  gtk_clist_set_column_auto_resize (GTK_CLIST (fontsel->font_style_clist),
				    0, TRUE);
  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_widget_set_usize (scrolled_win, FONT_STYLE_LIST_WIDTH, -1);
  gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->font_style_clist);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
				  GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
  gtk_widget_show(fontsel->font_style_clist);
  gtk_widget_show(scrolled_win);
  gtk_table_attach (GTK_TABLE (table), scrolled_win, 1, 2, 2, 3,
		    GTK_EXPAND | GTK_FILL,
		    GTK_EXPAND | GTK_FILL, 0, 0);
  
  fontsel->size_clist = gtk_clist_new(1);
  gtk_clist_column_titles_hide (GTK_CLIST(fontsel->size_clist));
  gtk_clist_set_column_width (GTK_CLIST(fontsel->size_clist), 0, 20);
  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_widget_set_usize (scrolled_win, FONT_SIZE_LIST_WIDTH, -1);
  gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->size_clist);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
				  GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
  gtk_widget_show(fontsel->size_clist);
  gtk_widget_show(scrolled_win);
  gtk_table_attach (GTK_TABLE (table), scrolled_win, 2, 3, 2, 3,
		    GTK_FILL, GTK_FILL, 0, 0);
  
  
  /* Insert the fonts. If there exist fonts with the same family but
     different foundries, then the foundry name is appended in brackets. */
  gtk_font_selection_show_available_fonts(fontsel);
  
  gtk_signal_connect (GTK_OBJECT (fontsel->font_clist), "select_row",
		      GTK_SIGNAL_FUNC(gtk_font_selection_select_font),
		      fontsel);
  GTK_WIDGET_SET_FLAGS (fontsel->font_clist, GTK_CAN_FOCUS);
  gtk_signal_connect (GTK_OBJECT (fontsel->font_clist), "key_press_event",
		      GTK_SIGNAL_FUNC(gtk_font_selection_on_clist_key_press),
		      fontsel);
  gtk_signal_connect_after (GTK_OBJECT (fontsel->font_clist), "expose_event",
			    GTK_SIGNAL_FUNC(gtk_font_selection_expose_list),
			    fontsel);
  
  gtk_signal_connect (GTK_OBJECT (fontsel->font_style_clist), "select_row",
		      GTK_SIGNAL_FUNC(gtk_font_selection_select_style),
		      fontsel);
  GTK_WIDGET_SET_FLAGS (fontsel->font_style_clist, GTK_CAN_FOCUS);
  gtk_signal_connect (GTK_OBJECT (fontsel->font_style_clist),
		      "key_press_event",
		      GTK_SIGNAL_FUNC(gtk_font_selection_on_clist_key_press),
		      fontsel);
  gtk_signal_connect_after (GTK_OBJECT (fontsel->font_style_clist),
			    "realize",
			    GTK_SIGNAL_FUNC(gtk_font_selection_realize_list),
			    fontsel);
  
  /* Insert the standard font sizes */
  gtk_clist_freeze (GTK_CLIST(fontsel->size_clist));
  size_to_match = INITIAL_FONT_SIZE;
  if (INITIAL_METRIC == GTK_FONT_METRIC_POINTS)
    size_to_match = size_to_match / 10;
  for (i = 0; i < sizeof(font_sizes) / sizeof(font_sizes[0]); i++)
    {
      sprintf(buffer, "%i", font_sizes[i]);
      size = buffer;
      gtk_clist_append(GTK_CLIST(fontsel->size_clist), &size);
      if (font_sizes[i] == size_to_match)
	{
	  gtk_clist_select_row(GTK_CLIST(fontsel->size_clist), i, 0);
	  gtk_entry_set_text(GTK_ENTRY(fontsel->size_entry), buffer);
	}
    }
  gtk_clist_thaw (GTK_CLIST(fontsel->size_clist));
  
  gtk_signal_connect (GTK_OBJECT (fontsel->size_clist), "select_row",
		      GTK_SIGNAL_FUNC(gtk_font_selection_select_size),
		      fontsel);
  GTK_WIDGET_SET_FLAGS (fontsel->size_clist, GTK_CAN_FOCUS);
  gtk_signal_connect (GTK_OBJECT (fontsel->size_clist), "key_press_event",
		      GTK_SIGNAL_FUNC(gtk_font_selection_on_clist_key_press),
		      fontsel);
  
  
  /* create the Reset Filter & Metric buttons */
  hbox = gtk_hbox_new(FALSE, 8);
  gtk_widget_show (hbox);
  gtk_box_pack_start (GTK_BOX (fontsel->main_vbox), hbox, FALSE, TRUE, 0);
  
  fontsel->filter_button = gtk_button_new_with_label(_("Reset Filter"));
  gtk_misc_set_padding (GTK_MISC (GTK_BIN (fontsel->filter_button)->child),
			16, 0);
  gtk_widget_show(fontsel->filter_button);
  gtk_box_pack_start (GTK_BOX (hbox), fontsel->filter_button, FALSE, FALSE, 0);
  gtk_widget_set_sensitive (fontsel->filter_button, FALSE);
  gtk_signal_connect (GTK_OBJECT (fontsel->filter_button), "clicked",
		      GTK_SIGNAL_FUNC(gtk_font_selection_on_clear_filter),
		      fontsel);
  
  hbox2 = gtk_hbox_new(FALSE, 0);
  gtk_widget_show (hbox2);
  gtk_box_pack_end (GTK_BOX (hbox), hbox2, FALSE, FALSE, 0);
  
  label = gtk_label_new(_("Metric:"));
  gtk_widget_show (label);
  gtk_box_pack_start (GTK_BOX (hbox2), label, FALSE, TRUE, 8);
  
  fontsel->points_button = gtk_radio_button_new_with_label(NULL, _("Points"));
  gtk_widget_show (fontsel->points_button);
  gtk_box_pack_start (GTK_BOX (hbox2), fontsel->points_button, FALSE, TRUE, 0);
  if (INITIAL_METRIC == GTK_FONT_METRIC_POINTS)
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fontsel->points_button),
				TRUE);
  
  fontsel->pixels_button = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(fontsel->points_button), _("Pixels"));
  gtk_widget_show (fontsel->pixels_button);
  gtk_box_pack_start (GTK_BOX (hbox2), fontsel->pixels_button, FALSE, TRUE, 0);
  if (INITIAL_METRIC == GTK_FONT_METRIC_PIXELS)
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(fontsel->pixels_button),
				TRUE);
  
  gtk_signal_connect(GTK_OBJECT(fontsel->points_button), "toggled",
		     (GtkSignalFunc) gtk_font_selection_metric_callback,
		     fontsel);
  gtk_signal_connect(GTK_OBJECT(fontsel->pixels_button), "toggled",
		     (GtkSignalFunc) gtk_font_selection_metric_callback,
		     fontsel);
  
  
  /* create the text entry widget */
  text_frame = gtk_frame_new (_("Preview:"));
  gtk_widget_show (text_frame);
  gtk_frame_set_shadow_type(GTK_FRAME(text_frame), GTK_SHADOW_ETCHED_IN);
  gtk_box_pack_start (GTK_BOX (fontsel->main_vbox), text_frame,
		      FALSE, TRUE, 0);
  
  /* This is just used to get a 4-pixel space around the preview entry. */
  text_box = gtk_hbox_new (FALSE, 0);
  gtk_widget_show (text_box);
  gtk_container_add (GTK_CONTAINER (text_frame), text_box);
  gtk_container_set_border_width (GTK_CONTAINER (text_box), 4);
  
  fontsel->preview_entry = gtk_entry_new ();
  gtk_widget_show (fontsel->preview_entry);
  gtk_widget_set_usize (fontsel->preview_entry, -1, INITIAL_PREVIEW_HEIGHT);
  gtk_box_pack_start (GTK_BOX (text_box), fontsel->preview_entry,
		      TRUE, TRUE, 0);
  
  /* Create the message area */
  fontsel->message_label = gtk_label_new("");
  gtk_widget_show (fontsel->message_label);
  gtk_box_pack_start (GTK_BOX (fontsel->main_vbox), fontsel->message_label, 
		      FALSE, FALSE, 0);
  
  
  /* Create the font info page */
  fontsel->info_vbox = gtk_vbox_new (FALSE, 4);
  gtk_widget_show (fontsel->info_vbox);
  gtk_container_set_border_width (GTK_CONTAINER (fontsel->info_vbox), 2);
  label = gtk_label_new(_("Font Information"));
  gtk_notebook_append_page (GTK_NOTEBOOK (fontsel),
			    fontsel->info_vbox, label);
  
  fontsel->info_clist = gtk_clist_new_with_titles (3, titles);
  gtk_widget_set_usize (fontsel->info_clist, 390, 150);
  gtk_clist_set_column_width(GTK_CLIST(fontsel->info_clist), 0, 130);
  gtk_clist_set_column_width(GTK_CLIST(fontsel->info_clist), 1, 130);
  gtk_clist_set_column_width(GTK_CLIST(fontsel->info_clist), 2, 130);
  gtk_clist_column_titles_passive(GTK_CLIST(fontsel->info_clist));
  scrolled_win = gtk_scrolled_window_new (NULL, NULL);
  gtk_container_add (GTK_CONTAINER (scrolled_win), fontsel->info_clist);
  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
				  GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
  gtk_widget_show(fontsel->info_clist);
  gtk_widget_show(scrolled_win);
  gtk_box_pack_start (GTK_BOX (fontsel->info_vbox), scrolled_win,
		      TRUE, TRUE, 0);
  
  /* Insert the property names */
  gtk_clist_freeze (GTK_CLIST(fontsel->info_clist));
  row_text[1] = "";
  row_text[2] = "";
  for (i = 0; i < GTK_XLFD_NUM_FIELDS; i++)
    {
      row_text[0] = _(xlfd_field_names[i]);
      gtk_clist_append(GTK_CLIST(fontsel->info_clist), row_text);
      gtk_clist_set_shift(GTK_CLIST(fontsel->info_clist), i, 0, 0, 4);
      gtk_clist_set_shift(GTK_CLIST(fontsel->info_clist), i, 1, 0, 4);
      gtk_clist_set_shift(GTK_CLIST(fontsel->info_clist), i, 2, 0, 4);
    }
  gtk_clist_thaw (GTK_CLIST(fontsel->info_clist));
  
  label = gtk_label_new(_("Requested Font Name:"));
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_widget_show (label);
  gtk_box_pack_start (GTK_BOX (fontsel->info_vbox), label, FALSE, TRUE, 0);
  
  fontsel->requested_font_name = gtk_entry_new();
  gtk_entry_set_editable(GTK_ENTRY(fontsel->requested_font_name), FALSE);
  gtk_widget_show (fontsel->requested_font_name);
  gtk_box_pack_start (GTK_BOX (fontsel->info_vbox),
		      fontsel->requested_font_name, FALSE, TRUE, 0);
  
  label = gtk_label_new(_("Actual Font Name:"));
  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
  gtk_widget_show (label);
  gtk_box_pack_start (GTK_BOX (fontsel->info_vbox), label, FALSE, TRUE, 0);
  
  fontsel->actual_font_name = gtk_entry_new();
  gtk_entry_set_editable(GTK_ENTRY(fontsel->actual_font_name), FALSE);
  gtk_widget_show (fontsel->actual_font_name);
  gtk_box_pack_start (GTK_BOX (fontsel->info_vbox),
		      fontsel->actual_font_name, FALSE, TRUE, 0);