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/* Text View/Markup
*
* GtkTextBuffer lets you define your own tags that can influence
* text formatting in a variety of ways. In this example, we show
* that GtkTextBuffer can load Pango markup and automatically generate
* suitable tags.
*/
#include <gtk/gtk.h>
static GtkWidget *stack;
static GtkWidget *view;
static GtkWidget *view2;
static void
source_toggled (GtkToggleButton *button)
{
if (gtk_toggle_button_get_active (button))
gtk_stack_set_visible_child_name (GTK_STACK (stack), "source");
else
{
GtkTextBuffer *buffer;
GtkTextIter start, end;
gchar *markup;
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view2));
gtk_text_buffer_get_bounds (buffer, &start, &end);
markup = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
gtk_text_buffer_get_bounds (buffer, &start, &end);
gtk_text_buffer_begin_irreversible_action (buffer);
gtk_text_buffer_delete (buffer, &start, &end);
gtk_text_buffer_insert_markup (buffer, &start, markup, -1);
gtk_text_buffer_end_irreversible_action (buffer);
g_free (markup);
gtk_stack_set_visible_child_name (GTK_STACK (stack), "formatted");
}
}
GtkWidget *
do_markup (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *sw;
GtkTextBuffer *buffer;
GtkTextIter iter;
GBytes *bytes;
const gchar *markup;
GtkWidget *header;
GtkWidget *show_source;
window = gtk_window_new ();
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_default_size (GTK_WINDOW (window), 450, 450);
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
stack = gtk_stack_new ();
gtk_widget_show (stack);
gtk_window_set_child (GTK_WINDOW (window), stack);
show_source = gtk_check_button_new_with_label ("Source");
gtk_widget_set_valign (show_source, GTK_ALIGN_CENTER);
g_signal_connect (show_source, "toggled", G_CALLBACK (source_toggled), stack);
header = gtk_header_bar_new ();
gtk_header_bar_set_show_title_buttons (GTK_HEADER_BAR (header), TRUE);
gtk_header_bar_pack_start (GTK_HEADER_BAR (header), show_source);
gtk_window_set_titlebar (GTK_WINDOW (window), header);
gtk_window_set_title (GTK_WINDOW (window), "Markup");
view = gtk_text_view_new ();
gtk_text_view_set_editable (GTK_TEXT_VIEW (view), FALSE);
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), GTK_WRAP_WORD_CHAR);
gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view), 10);
gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view), 10);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view);
gtk_stack_add_named (GTK_STACK (stack), sw, "formatted");
view2 = gtk_text_view_new ();
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view2), GTK_WRAP_WORD);
gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view2), 10);
gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view2), 10);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view2);
gtk_stack_add_named (GTK_STACK (stack), sw, "source");
bytes = g_resources_lookup_data ("/markup/markup.txt", 0, NULL);
markup = (const gchar *)g_bytes_get_data (bytes, NULL);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
gtk_text_buffer_get_start_iter (buffer, &iter);
gtk_text_buffer_begin_irreversible_action (buffer);
gtk_text_buffer_insert_markup (buffer, &iter, markup, -1);
gtk_text_buffer_end_irreversible_action (buffer);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view2));
gtk_text_buffer_get_start_iter (buffer, &iter);
gtk_text_buffer_begin_irreversible_action (buffer);
gtk_text_buffer_insert (buffer, &iter, markup, -1);
gtk_text_buffer_end_irreversible_action (buffer);
g_bytes_unref (bytes);
gtk_widget_show (stack);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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