[gtk+] tests: Add a test for a performance optimisation

[Benjamin Otte <otte src gnome org>]

commit 7d1e79ef4b2adc31fd910ffc0e1deedefcfdd565
Author: Benjamin Otte <otte redhat com>
Date:   Mon Sep 29 23:10:41 2014 +0200

    tests: Add a test for a performance optimisation
    
    text-shadow is too slow. Running this testcase reveals that.

 tests/Makefile.am          |    9 +++++
 tests/animated-revealing.c |   75 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+), 0 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f4b84c8..362f89b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -27,6 +27,7 @@ endif
 noinst_PROGRAMS =  $(TEST_PROGS)       \
        subsurface                      \
        animated-resizing               \
+       animated-revealing              \
        motion-compression              \
        scrolling-performance           \
        simple                          \
@@ -174,6 +175,7 @@ endif
 endif
 
 animated_resizing_DEPENDENCIES = $(TEST_DEPS)
+animated_revealing_DEPENDENCIES = $(TEST_DEPS)
 flicker_DEPENDENCIES = $(TEST_DEPS)
 motion_compression_DEPENDENCIES = $(TEST_DEPS)
 scrolling_performance_DEPENDENCIES = $(TEST_DEPS)
@@ -293,6 +295,13 @@ animated_resizing_SOURCES =        \
        variable.c              \
        variable.h
 
+animated_revealing_SOURCES =   \
+       animated-revealing.c    \
+       frame-stats.c           \
+       frame-stats.h           \
+       variable.c              \
+       variable.h
+
 scrolling_performance_SOURCES = \
        scrolling-performance.c \
        frame-stats.c           \
diff --git a/tests/animated-revealing.c b/tests/animated-revealing.c
new file mode 100644
index 0000000..2040824
--- /dev/null
+++ b/tests/animated-revealing.c
@@ -0,0 +1,75 @@
+/* -*- mode: C; c-basic-offset: 2; indent-tabs-mode: nil; -*- */
+
+#include <gtk/gtk.h>
+
+#include "frame-stats.h"
+
+double reveal_time = 5;
+
+static GOptionEntry options[] = {
+  { "time", 't', 0, G_OPTION_ARG_DOUBLE, &reveal_time, "Reveal time", "SECONDS" },
+  { NULL }
+};
+
+static void
+toggle_reveal (GtkRevealer *revealer)
+{
+  gtk_revealer_set_reveal_child (revealer, !gtk_revealer_get_reveal_child (revealer));
+}
+
+int
+main(int argc, char **argv)
+{
+  GtkWidget *window, *revealer, *grid, *widget;
+  GtkCssProvider *cssprovider;
+  GError *error = NULL;
+  guint x, y;
+
+  GOptionContext *context = g_option_context_new (NULL);
+  g_option_context_add_main_entries (context, options, NULL);
+  frame_stats_add_options (g_option_context_get_main_group (context));
+  g_option_context_add_group (context,
+                              gtk_get_option_group (TRUE));
+
+  if (!g_option_context_parse (context, &argc, &argv, &error))
+    {
+      g_printerr ("Option parsing failed: %s\n", error->message);
+      return 1;
+    }
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  frame_stats_ensure (GTK_WINDOW (window));
+
+  revealer = gtk_revealer_new ();
+  gtk_widget_set_valign (revealer, GTK_ALIGN_START);
+  gtk_revealer_set_transition_type (GTK_REVEALER (revealer), GTK_REVEALER_TRANSITION_TYPE_SLIDE_DOWN);
+  gtk_revealer_set_transition_duration (GTK_REVEALER (revealer), reveal_time * 1000);
+  gtk_revealer_set_reveal_child (GTK_REVEALER (revealer), TRUE);
+  g_signal_connect_after (revealer, "map", G_CALLBACK (toggle_reveal), NULL);
+  g_signal_connect_after (revealer, "notify::child-revealed", G_CALLBACK (toggle_reveal), NULL);
+  gtk_container_add (GTK_CONTAINER (window), revealer);
+
+  grid = gtk_grid_new ();
+  gtk_container_add (GTK_CONTAINER (revealer), grid);
+
+  cssprovider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_data (cssprovider, "* { padding: 2px; text-shadow: 5px 5px 2px grey; }", -1, 
NULL);
+
+  for (x = 0; x < 10; x++)
+    {
+      for (y = 0; y < 20; y++)
+        {
+          widget = gtk_label_new ("Hello World");
+          gtk_style_context_add_provider (gtk_widget_get_style_context (widget),
+                                          GTK_STYLE_PROVIDER (cssprovider),
+                                          GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+          gtk_grid_attach (GTK_GRID (grid), widget, x, y, 1, 1);
+        }
+    }
+
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+
+  return 0;
+}