pstring options::help(pstring description, pstring usage,
unsigned width, unsigned indent)
{
pstring ret;
ret = split_paragraphs(description, width, 0, 0) + "\n";
ret += "Usage:\t" + usage + "\n\nOptions:\n\n";
for (auto & optbase : m_opts )
{
if (auto opt = dynamic_cast<option *>(optbase))
{
pstring line = "";
if (opt->short_opt() != "")
line += " -" + opt->short_opt();
if (opt->long_opt() != "")
{
if (line != "")
line += ", ";
else
line = " ";
line += "--" + opt->long_opt();
if (opt->has_argument())
{
line += "=";
option_str_limit *ol = dynamic_cast<option_str_limit *>(opt);
if (ol)
{
for (auto &v : ol->limit())
{
line += v + "|";
}
line = line.left(line.begin() + (line.len() - 1));
}
else
line += "Value";
}
}
line = line.rpad(" ", indent - 2) + " ";
if (line.len() > indent)
{
//ret += "TestGroup abc\n def gef\nxyz\n\n" ;
ret += line + "\n";
ret += split_paragraphs(opt->help(), width, indent, indent);
}
else
ret += split_paragraphs(line + opt->help(), width, indent, 0);
}
else if (auto grp = dynamic_cast<option_group *>(optbase))
{
ret += "\n" + grp->group() + ":\n";
if (grp->help() != "") ret += split_paragraphs(grp->help(), width, 4, 4) + "\n";
}
}
pstring ex("");
for (auto & optbase : m_opts )
{
if (auto example = dynamic_cast<option_example *>(optbase))
{
ex += "> " + example->example()+"\n\n";
ex += split_paragraphs(example->help(), width, 4, 4) + "\n";
}
}
if (ex.len() > 0)
{
ret += "\n\nExamples:\n\n" + ex;
}
return ret;
}
int
main (int argc, char **argv)
{
char *text;
GtkWidget *window;
GtkWidget *scrollwin;
GtkWidget *vbox, *hbox;
GtkWidget *frame;
GtkWidget *checkbutton;
gtk_init (&argc, &argv);
if (argc != 2)
{
fprintf (stderr, "Usage: %s FILE\n", g_get_prgname ());
exit(1);
}
/* Create the list of paragraphs from the supplied file
*/
text = read_file (argv[1]);
if (!text)
exit(1);
context = pango_win32_get_context ();
paragraphs = split_paragraphs (text);
pango_context_set_language (context, pango_language_from_string ("en_US"));
pango_context_set_base_dir (context, PANGO_DIRECTION_LTR);
font_description = pango_font_description_new ();
pango_font_description_set_family(font_description, "sans");
pango_font_description_set_size(font_description, 16 * PANGO_SCALE);
#if 0 /* default init ok? */
font_description.style = PANGO_STYLE_NORMAL;
font_description.variant = PANGO_VARIANT_NORMAL;
font_description.weight = 500;
font_description.stretch = PANGO_STRETCH_NORMAL;
#endif
pango_context_set_font_description (context, font_description);
/* Create the user interface
*/
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 400, 400);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_add (GTK_CONTAINER (window), vbox);
hbox = make_font_selector ();
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
scrollwin = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrollwin),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_box_pack_start (GTK_BOX (vbox), scrollwin, TRUE, TRUE, 0);
layout = gtk_layout_new (NULL, NULL);
gtk_widget_set_events (layout, GDK_BUTTON_PRESS_MASK);
gtk_widget_set_app_paintable (layout, TRUE);
gtk_signal_connect (GTK_OBJECT (layout), "size_allocate",
GTK_SIGNAL_FUNC (size_allocate), paragraphs);
gtk_signal_connect (GTK_OBJECT (layout), "expose_event",
GTK_SIGNAL_FUNC (expose), paragraphs);
gtk_signal_connect (GTK_OBJECT (layout), "draw",
GTK_SIGNAL_FUNC (draw), paragraphs);
gtk_signal_connect (GTK_OBJECT (layout), "button_press_event",
GTK_SIGNAL_FUNC (button_press), paragraphs);
#if GTK_CHECK_VERSION (1,3,2)
gtk_widget_set_double_buffered (layout, FALSE);
#endif
gtk_container_add (GTK_CONTAINER (scrollwin), layout);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
message_label = gtk_label_new ("Current char:");
gtk_misc_set_padding (GTK_MISC (message_label), 1, 1);
gtk_misc_set_alignment (GTK_MISC (message_label), 0.0, 0.5);
gtk_container_add (GTK_CONTAINER (frame), message_label);
checkbutton = gtk_check_button_new_with_label ("Use RTL global direction");
gtk_signal_connect (GTK_OBJECT (checkbutton), "toggled",
GTK_SIGNAL_FUNC (checkbutton_toggled), NULL);
gtk_box_pack_start (GTK_BOX (vbox), checkbutton, FALSE, FALSE, 0);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
