[gtk+] Add a test for overlay blur

[Matthias Clasen <matthiasc src gnome org>]

commit 93c67eaf6dde850714014213425cf12fe7667725
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Sep 2 20:43:42 2017 -0400

    Add a test for overlay blur

 tests/portland-rose.jpg |  Bin 0 -> 469879 bytes
 tests/testoverlay.c     |   66 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 0 deletions(-)
---
diff --git a/tests/portland-rose.jpg b/tests/portland-rose.jpg
new file mode 100644
index 0000000..89974da
Binary files /dev/null and b/tests/portland-rose.jpg differ
diff --git a/tests/testoverlay.c b/tests/testoverlay.c
index 9c3b001..a29b82f 100644
--- a/tests/testoverlay.c
+++ b/tests/testoverlay.c
@@ -534,6 +534,68 @@ test_child_order (void)
 }
 
 
+static GtkWidget *
+test_effect (void)
+{
+  GtkWidget *win;
+  GtkWidget *overlay;
+  GtkWidget *button;
+  GtkWidget *image;
+  GtkWidget *sw;
+  GtkWidget *box;
+  GtkWidget *label;
+
+  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_default_size (GTK_WINDOW (win), 600, 400);
+  gtk_window_set_title (GTK_WINDOW (win), "Fancy Effect");
+
+  overlay = gtk_overlay_new ();
+  gtk_container_add (GTK_CONTAINER (win), overlay);
+
+  button = gtk_button_new_with_label ("Don't click this button!");
+  label = gtk_bin_get_child (GTK_BIN (button));
+  g_object_set (label, "margin", 50, NULL);
+
+  gtk_widget_set_opacity (button, 0.7);
+  gtk_widget_set_halign (button, GTK_ALIGN_FILL);
+  gtk_widget_set_valign (button, GTK_ALIGN_START);
+
+  gtk_overlay_add_overlay (GTK_OVERLAY (overlay), button);
+  gtk_container_child_set (GTK_CONTAINER (overlay), button, "blur", 5.0, NULL);
+
+  button = gtk_button_new_with_label ("Maybe this one?");
+  label = gtk_bin_get_child (GTK_BIN (button));
+  g_object_set (label, "margin", 50, NULL);
+
+  gtk_widget_set_opacity (button, 0.7);
+  gtk_widget_set_halign (button, GTK_ALIGN_FILL);
+  gtk_widget_set_valign (button, GTK_ALIGN_END);
+
+  gtk_overlay_add_overlay (GTK_OVERLAY (overlay), button);
+  gtk_container_child_set (GTK_CONTAINER (overlay), button, "blur", 5.0, NULL);
+
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  sw = gtk_scrolled_window_new (NULL, NULL);
+  gtk_container_add (GTK_CONTAINER (overlay), sw);
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
+                                  GTK_POLICY_AUTOMATIC,
+                                  GTK_POLICY_AUTOMATIC);
+  box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_add (GTK_CONTAINER (sw), box);
+  image = gtk_image_new ();
+  if (g_file_test ("portland-rose.jpg", G_FILE_TEST_EXISTS))
+    gtk_image_set_from_file (GTK_IMAGE (image), "portland-rose.jpg");
+  else if (g_file_test ("tests/portland-rose.jpg", G_FILE_TEST_EXISTS))
+    gtk_image_set_from_file (GTK_IMAGE (image), "tests/portland-rose.jpg");
+  else if (g_file_test ("../tests/portland-rose.jpg", G_FILE_TEST_EXISTS))
+    gtk_image_set_from_file (GTK_IMAGE (image), "../tests/portland-rose.jpg");
+  else
+    g_error ("portland-rose.jpg not found. No rose for you!\n");
+
+  gtk_container_add (GTK_CONTAINER (box), image);
+
+  return win;
+}
 int
 main (int argc, char *argv[])
 {
@@ -546,6 +608,7 @@ main (int argc, char *argv[])
   GtkWidget *win7;
   GtkWidget *win8;
   GtkWidget *win9;
+  GtkWidget *win10;
   GtkCssProvider *css_provider;
 
   gtk_init ();
@@ -586,6 +649,9 @@ main (int argc, char *argv[])
   win9 = test_child_order ();
   gtk_widget_show (win9);
 
+  win10 = test_effect ();
+  gtk_widget_show (win10);
+
   gtk_main ();
 
   return 0;