[gtk+/overlay] Add a scrolling testcase

[Matthias Clasen <matthiasc src gnome org>]

commit 4e3e9017d83054839a51ca73ddcff9492cf4dec7
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jun 10 21:12:45 2011 -0400

    Add a scrolling testcase

 tests/testoverlay.c |   53 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)
---
diff --git a/tests/testoverlay.c b/tests/testoverlay.c
index 2c27500..b564a94 100644
--- a/tests/testoverlay.c
+++ b/tests/testoverlay.c
@@ -1,3 +1,4 @@
+#include <string.h>
 #include <gtk/gtk.h>
 
 static GtkWidget *
@@ -116,12 +117,61 @@ test_fullwidth (void)
   return win;
 }
 
+static GtkWidget *
+test_scrolling (void)
+{
+  GtkWidget *win;
+  GtkWidget *overlay;
+  GtkWidget *sw;
+  GtkWidget *text;
+  GtkWidget *child;
+  GtkTextBuffer *buffer;
+  gchar *contents;
+  gsize len;
+
+  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title (GTK_WINDOW (win), "Scrolling");
+
+  overlay = gtk_overlay_new ();
+  gtk_container_add (GTK_CONTAINER (win), overlay);
+
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (sw), 200);
+  gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 200);
+  gtk_container_add (GTK_CONTAINER (overlay), sw);
+
+  text = gtk_text_view_new ();
+  buffer = gtk_text_buffer_new (NULL);
+  if (!g_file_get_contents ("testoverlay.c", &contents, &len, NULL))
+    {
+      contents = g_strdup ("Text should go here...");
+      len = strlen (contents);
+    }
+  gtk_text_buffer_set_text (buffer, contents, len);
+  g_free (contents);
+  gtk_text_view_set_buffer (GTK_TEXT_VIEW (text), buffer);
+
+  gtk_widget_set_hexpand (text, TRUE);
+  gtk_widget_set_vexpand (text, TRUE);
+  gtk_container_add (GTK_CONTAINER (sw), text);
+  gtk_overlay_set_relative_widget (GTK_OVERLAY (overlay), text);
+
+  child = gtk_label_new ("This should be visible");
+  gtk_widget_set_halign (child, GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (child, GTK_ALIGN_END);
+  gtk_overlay_add (GTK_OVERLAY (overlay), child);
+  gtk_overlay_set_offset (GTK_OVERLAY (overlay), child, 0, -4);
+
+  return win;
+}
+
 int
 main (int argc, char *argv[])
 {
   GtkWidget *win1;
   GtkWidget *win2;
   GtkWidget *win3;
+  GtkWidget *win4;
 
   gtk_init (&argc, &argv);
 
@@ -137,6 +187,9 @@ main (int argc, char *argv[])
   win3 = test_fullwidth ();
   gtk_widget_show_all (win3);
 
+  win4 = test_scrolling ();
+  gtk_widget_show_all (win4);
+
   gtk_main ();
 
   return 0;