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Add an example for synchronized scrolling

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This example uses GTK_POLICY_EXTERNAL to share a scrollbar among
multiple scrolled windows.
This commit is contained in:
Matthias Clasen 2014-10-09 20:17:10 -04:00
parent 94b680c2cd
commit 9dcb33ad34
2 changed files with 70 additions and 0 deletions
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1
tests/Makefile.am
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@ -25,6 +25,7 @@ testsocket_programs = testsocket testsocket_child
endif
noinst_PROGRAMS = $(TEST_PROGS) \
syncscroll \
subsurface \
animated-resizing \
animated-revealing \

69
tests/syncscroll.c Normal file
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@ -0,0 +1,69 @@
#include <gtk/gtk.h>
static void
fill_text_view (GtkWidget *tv, const gchar *text)
{
gint i;
GString *s;
s = g_string_new ("");
for (i = 0; i < 200; i++)
g_string_append_printf (s, "%s %d\n", text, i);
gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (tv)),
g_string_free (s, FALSE), -1);
}
int
main (int argc, char *argv[])
{
GtkWidget *win, *box, *tv, *sw, *sb;
GtkAdjustment *adj;
gtk_init (NULL, NULL);
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (win), 640, 480);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 5);
gtk_container_add (GTK_CONTAINER (win), box);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_NEVER,
GTK_POLICY_EXTERNAL);
gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
tv = gtk_text_view_new ();
fill_text_view (tv, "Left");
gtk_container_add (GTK_CONTAINER (sw), tv);
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
sw = gtk_scrolled_window_new (NULL, adj);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_NEVER,
GTK_POLICY_EXTERNAL);
gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
tv = gtk_text_view_new ();
fill_text_view (tv, "Middle");
gtk_container_add (GTK_CONTAINER (sw), tv);
sw = gtk_scrolled_window_new (NULL, adj);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_NEVER,
GTK_POLICY_EXTERNAL);
gtk_box_pack_start (GTK_BOX (box), sw, TRUE, TRUE, 0);
tv = gtk_text_view_new ();
fill_text_view (tv, "Right");
gtk_container_add (GTK_CONTAINER (sw), tv);
sb = gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, adj);
gtk_container_add (GTK_CONTAINER (box), sb);
gtk_widget_show_all (win);
gtk_main ();
return 0;
}