mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-30 15:31:34 +00:00
133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
/* 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_TOPLEVEL);
|
|
gtk_window_set_display (GTK_WINDOW (window),
|
|
gtk_widget_get_display (do_widget));
|
|
gtk_window_set_default_size (GTK_WINDOW (window), 450, 450);
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (gtk_widget_destroyed), &window);
|
|
|
|
stack = gtk_stack_new ();
|
|
gtk_widget_show (stack);
|
|
gtk_container_add (GTK_CONTAINER (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);
|
|
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 (NULL, NULL);
|
|
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
|
|
GTK_POLICY_AUTOMATIC,
|
|
GTK_POLICY_AUTOMATIC);
|
|
gtk_container_add (GTK_CONTAINER (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 (NULL, NULL);
|
|
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
|
|
GTK_POLICY_AUTOMATIC,
|
|
GTK_POLICY_AUTOMATIC);
|
|
gtk_container_add (GTK_CONTAINER (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_widget_destroy (window);
|
|
|
|
return window;
|
|
}
|