[gtk+/nth-child: 32/33] tests: Add a cute demo and test app for the new box css

[Benjamin Otte <otte src gnome org>]

commit 303884715f61408692f22f62fe247d05ba829c83
Author: Benjamin Otte <otte redhat com>
Date:   Sat May 28 00:54:56 2011 +0200

    tests: Add a cute demo and test app for the new box css
    
    It contains a live editor for CSS, that thing finds lots of bugs...

 tests/Makefile.am  |    6 ++
 tests/testboxcss.c |  204 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 210 insertions(+), 0 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1d93f3c..3cbf6fa 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -36,6 +36,7 @@ noinst_PROGRAMS =  $(TEST_PROGS)	\
 	testappchooserbutton		\
 	testassistant			\
 	testbbox			\
+	testboxcss                      \
 	testbuttons			\
 	testcairo			\
 	testcalendar			\
@@ -227,6 +228,7 @@ testaccel_LDADD = $(LDADDS)
 testadjustsize_LDADD = $(LDADDS)
 testassistant_LDADD = $(LDADDS)
 testbbox_LDADD = $(LDADDS)
+testboxcss_LDADD = $(LDADDS)
 testbuttons_LDADD = $(LDADDS)
 testcairo_LDADD = $(LDADDS)
 testcalendar_LDADD = $(LDADDS)
@@ -311,6 +313,10 @@ testpixbuf_color_LDADD = $(LDADDS)
 testpixbuf_scale_LDADD = $(LDADDS)
 
 
+testboxcss_SOURCES =	\
+	testboxcss.c	\
+	prop-editor.c
+
 testentrycompletion_SOURCES = 	\
 	prop-editor.c		\
 	testentrycompletion.c
diff --git a/tests/testboxcss.c b/tests/testboxcss.c
new file mode 100644
index 0000000..bb258f6
--- /dev/null
+++ b/tests/testboxcss.c
@@ -0,0 +1,204 @@
+/* testbox.c
+ *
+ * Copyright (C) 2010 Benjamin Otte <otte gnome ogr>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#include "config.h"
+#include <gtk/gtk.h>
+#include "prop-editor.h"
+
+/* This is exactly the style information you've been looking for */
+#define GTK_STYLE_PROVIDER_PRIORITY_FORCE G_MAXUINT
+
+#define DEFAULT_CSS \
+  ".play {\n" \
+  "  engine: none;\n" \
+  "  background-image: none;\n" \
+  "  background-color: red;\n" \
+  "  border-color: black;\n" \
+  "  border-radius: 0;\n" \
+  "}\n" \
+  "\n" \
+  ".play:nth-child(even) {\n" \
+  "  background-color: yellow\n" \
+  "}\n" \
+  "\n" \
+  ".play:nth-child(first) {\n" \
+  "  border-radius: 5 0 0 5;\n" \
+  "}\n" \
+  "\n" \
+  ".play:nth-child(last) {\n" \
+  "  border-radius: 0 5 5 0;\n" \
+  "}\n" \
+  "\n"
+
+static void
+show_parsing_error (GtkCssProvider *provider,
+                    const gchar    *path,
+                    guint           line,
+                    guint           position,
+                    const GError   *error,
+                    GtkTextBuffer  *buffer)
+{
+  GtkTextIter start, end;
+  const char *tag_name;
+
+  gtk_text_buffer_get_iter_at_line (buffer, &start, line - 1);
+  if (gtk_text_buffer_get_line_count (buffer) <= line)
+    gtk_text_buffer_get_end_iter (buffer, &end);
+  else
+    gtk_text_buffer_get_iter_at_line (buffer, &end, line);
+
+  if (g_error_matches (error, GTK_CSS_PROVIDER_ERROR, GTK_CSS_PROVIDER_ERROR_DEPRECATED))
+    tag_name = "warning";
+  else
+    tag_name = "error";
+
+  gtk_text_buffer_apply_tag_by_name (buffer, tag_name, &start, &end);
+}
+                    
+static void
+css_text_changed (GtkTextBuffer  *buffer,
+                  GtkCssProvider *provider)
+{
+  GtkTextIter start, end;
+  char *text;
+
+  gtk_text_buffer_get_start_iter (buffer, &start);
+  gtk_text_buffer_get_end_iter (buffer, &end);
+  gtk_text_buffer_remove_all_tags (buffer, &start, &end);
+
+  text = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
+  gtk_css_provider_load_from_data (provider, text, -1, NULL);
+  g_free (text);
+
+  gtk_style_context_reset_widgets (gdk_screen_get_default ());
+}
+
+static void
+remove_widget (GtkWidget *widget)
+{
+  gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (widget)), widget);
+}
+
+static void
+add_widget (GtkBox *box)
+{
+  static int count = 0;
+  GtkWidget* button;
+  char *text;
+
+  text = g_strdup_printf ("Remove %d", ++count);
+  button = gtk_button_new_from_stock (text);
+  g_free (text);
+  gtk_style_context_add_class (gtk_widget_get_style_context (button), "play");
+  g_signal_connect_swapped (button,
+                            "clicked",
+                            G_CALLBACK (remove_widget),
+                            button);
+  gtk_widget_show (button);
+  gtk_container_add (GTK_CONTAINER (box), button);
+}
+
+static void
+set_orientation (GtkSwitch *switch_)
+{
+  gtk_widget_set_default_direction (gtk_switch_get_active (switch_) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL);
+}
+
+gint
+main (gint argc, gchar **argv)
+{
+  GtkWidget *window, *main_box, *box, *container, *child;
+  GtkStyleProvider *provider;
+  GtkTextBuffer *css;
+  
+  gtk_init (&argc, &argv);
+
+  css = gtk_text_buffer_new (NULL);
+  gtk_text_buffer_create_tag (css,
+                              "warning",
+                              "background", "rgba(255,255,0,0.3)",
+                              NULL);
+  gtk_text_buffer_create_tag (css,
+                              "error",
+                              "background", "rgba(255,0,0,0.3)",
+                              NULL);
+
+  provider = GTK_STYLE_PROVIDER (gtk_css_provider_new ());
+  gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
+                                             provider,
+                                             GTK_STYLE_PROVIDER_PRIORITY_FORCE);
+  
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+
+  g_signal_connect (window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
+  g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL);
+
+  main_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+  gtk_container_add (GTK_CONTAINER (window), main_box);
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_box_pack_start (GTK_BOX (main_box), box, FALSE, TRUE, 0);
+
+  container = gtk_scrolled_window_new (NULL, NULL);
+  gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (container), 200);
+  gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (container), 200);
+  gtk_box_pack_start (GTK_BOX (main_box), container, TRUE, TRUE, 0);
+  child = gtk_text_view_new_with_buffer (css);
+  gtk_container_add (GTK_CONTAINER (container), child);
+  g_signal_connect (css,
+                    "changed",
+                    G_CALLBACK (css_text_changed),
+                    provider);
+  gtk_text_buffer_set_text (css,
+                            DEFAULT_CSS,
+                            -1);
+  g_signal_connect (provider,
+                    "parsing-error",
+                    G_CALLBACK (show_parsing_error),
+                    gtk_text_view_get_buffer (GTK_TEXT_VIEW (child)));
+
+  container = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
+  gtk_box_pack_start (GTK_BOX (main_box), container, FALSE, TRUE, 0);
+  child = gtk_switch_new ();
+  gtk_switch_set_active (GTK_SWITCH (child), gtk_widget_get_default_direction () == GTK_TEXT_DIR_LTR);
+  g_signal_connect (child,
+                    "notify::active",
+                    G_CALLBACK (set_orientation),
+                    NULL);
+  gtk_box_pack_start (GTK_BOX (container), child, FALSE, FALSE, 0);
+  child = gtk_label_new ("left-to-right");
+  gtk_box_pack_start (GTK_BOX (container), child, FALSE, FALSE, 0);
+  child = gtk_button_new_with_label ("Add widget");
+  g_signal_connect_swapped (child,
+                            "clicked",
+                            G_CALLBACK (add_widget),
+                            box);
+  gtk_box_pack_end (GTK_BOX (container), child, FALSE, FALSE, 0);
+
+  add_widget (GTK_BOX (box));
+  add_widget (GTK_BOX (box));
+  add_widget (GTK_BOX (box));
+  add_widget (GTK_BOX (box));
+
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+  
+  return 0;
+}