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/* Expander
*
* GtkExpander allows to provide additional content that is initially hidden.
* This is also known as "disclosure triangle".
*
* This example also shows how to make the window resizable only if the expander
* is expanded.
*/
#include <glib/gi18n.h>
#include <gtk/gtk.h>
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
static GtkWidget *window = NULL;
static void
response_cb (GtkDialog *dialog, int response_id)
{
gtk_window_destroy (GTK_WINDOW (window));
window = NULL;
}
static void
expander_cb (GtkExpander *expander, GParamSpec *pspec, GtkWindow *dialog)
{
gtk_window_set_resizable (dialog, gtk_expander_get_expanded (expander));
}
GtkWidget *
do_expander (GtkWidget *do_widget)
{
GtkWidget *toplevel;
GtkWidget *area;
GtkWidget *expander;
GtkWidget *label;
GtkWidget *sw;
GtkWidget *tv;
GtkTextBuffer *buffer;
GtkTextIter start;
GtkTextIter end;
GtkTextTag *tag;
GdkPaintable *paintable;
if (!window)
{
toplevel = GTK_WIDGET (gtk_widget_get_root (do_widget));
window = gtk_message_dialog_new_with_markup (GTK_WINDOW (toplevel),
0,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"<big><b>%s</b></big>",
"Something went wrong");
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (window),
"Here are some more details "
"but not the full story.");
area = gtk_message_dialog_get_message_area (GTK_MESSAGE_DIALOG (window));
label = gtk_widget_get_last_child (area);
gtk_label_set_wrap (GTK_LABEL (label), FALSE);
gtk_widget_set_vexpand (label, FALSE);
expander = gtk_expander_new ("Details:");
gtk_widget_set_vexpand (expander, TRUE);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 100);
gtk_scrolled_window_set_has_frame (GTK_SCROLLED_WINDOW (sw), TRUE);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_propagate_natural_height (GTK_SCROLLED_WINDOW (sw), TRUE);
gtk_widget_set_vexpand (sw, TRUE);
tv = gtk_text_view_new ();
g_object_set (tv,
"left-margin", 10,
"right-margin", 10,
"top-margin", 10,
"bottom-margin", 10,
NULL);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv));
gtk_text_view_set_editable (GTK_TEXT_VIEW (tv), FALSE);
gtk_text_view_set_cursor_visible (GTK_TEXT_VIEW (tv), FALSE);
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (tv), GTK_WRAP_WORD);
gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (tv), 2);
gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (tv), 2);
gtk_text_buffer_set_text (buffer,
"Finally, the full story with all details. "
"And all the inside information, including "
"error codes, etc etc. Pages of information, "
"you might have to scroll down to read it all, "
"or even resize the window - it works !\n"
"A second paragraph will contain even more "
"innuendo, just to make you scroll down or "
"resize the window.\n"
"Do it already!\n", -1);
gtk_text_buffer_get_end_iter (buffer, &start);
paintable = GDK_PAINTABLE (gdk_texture_new_from_resource ("/cursors/images/gtk_logo_cursor.png"));
gtk_text_buffer_insert_paintable (buffer, &start, paintable);
g_object_unref (paintable);
gtk_text_iter_backward_char (&start);
gtk_text_buffer_get_end_iter (buffer, &end);
tag = gtk_text_buffer_create_tag (buffer, NULL,
"pixels-above-lines", 200,
"justification", GTK_JUSTIFY_RIGHT,
NULL);
gtk_text_buffer_apply_tag (buffer, tag, &start, &end);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), tv);
gtk_expander_set_child (GTK_EXPANDER (expander), sw);
gtk_box_append (GTK_BOX (area), expander);
g_signal_connect (expander, "notify::expanded",
G_CALLBACK (expander_cb), window);
g_signal_connect (window, "response", G_CALLBACK (response_cb), NULL);
}
if (!gtk_widget_get_visible (window))
gtk_widget_set_visible (window, TRUE);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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