gtk2/demos/gtk-demo/tabs.c
Matthias Clasen 386b63b85d scrolledwindow: Don't take adjustments in new()
In 99.9% of all cases, these are just NULL, NULL.
So just do away with these arguments, people can
use the setters for the rare cases where they want
the scrolled window to use a different adjustment.
2020-06-24 11:25:09 -04:00

58 lines
1.9 KiB
C

/* Text View/Tabs
*
* GtkTextView can position text at fixed positions, using tabs.
*/
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
GtkWidget *
do_tabs (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *view;
GtkWidget *sw;
GtkTextBuffer *buffer;
PangoTabArray *tabs;
window = gtk_window_new ();
gtk_window_set_title (GTK_WINDOW (window), "Tabs");
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);
view = gtk_text_view_new ();
gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (view), GTK_WRAP_WORD);
gtk_text_view_set_left_margin (GTK_TEXT_VIEW (view), 20);
gtk_text_view_set_right_margin (GTK_TEXT_VIEW (view), 20);
tabs = pango_tab_array_new (3, TRUE);
pango_tab_array_set_tab (tabs, 0, PANGO_TAB_LEFT, 0);
pango_tab_array_set_tab (tabs, 1, PANGO_TAB_LEFT, 150);
pango_tab_array_set_tab (tabs, 2, PANGO_TAB_LEFT, 300);
gtk_text_view_set_tabs (GTK_TEXT_VIEW (view), tabs);
pango_tab_array_free (tabs);
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
gtk_text_buffer_set_text (buffer, "one\ttwo\tthree\nfour\tfive\tsix\nseven\teight\tnine", -1);
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_window_set_child (GTK_WINDOW (window), sw);
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), view);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}