[gtk+/gtk-style-context: 467/533] Illustrate extension rendering

[Carlos Garnacho <carlosg src gnome org>]

commit d88aab4ea10733b7a4336161d14627ee5459f66a
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Nov 23 18:00:43 2010 -0500

    Illustrate extension rendering

 docs/reference/gtk/images/extensions.png |  Bin 0 -> 475 bytes
 docs/reference/gtk/images/focus.png      |  Bin 0 -> 371 bytes
 gtk/gtkstylecontext.c                    |    9 ++++++
 tests/styleexamples.c                    |   41 ++++++++++++++++++++++++++++++
 4 files changed, 50 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/images/extensions.png b/docs/reference/gtk/images/extensions.png
new file mode 100644
index 0000000..f41d710
Binary files /dev/null and b/docs/reference/gtk/images/extensions.png differ
diff --git a/docs/reference/gtk/images/focus.png b/docs/reference/gtk/images/focus.png
new file mode 100644
index 0000000..583d292
Binary files /dev/null and b/docs/reference/gtk/images/focus.png differ
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index 78957e6..e5bd4cf 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -3159,6 +3159,10 @@ gtk_render_expander (GtkStyleContext *context,
  * @height: rectangle height
  *
  * Renders a focus indicator on the rectangle determined by @x, @y, @width, @height.
+ * <example>
+ * <title>Typical focus rendering</title>
+ * <inlinegraphic fileref="focus.png" format="PNG"/>
+ * </example>
  *
  * Since: 3.0
  **/
@@ -3357,6 +3361,11 @@ gtk_render_frame_gap (GtkStyleContext *context,
  * defined by @x, @y, @width, @height. The side where the extension
  * connects to is defined by @gap_side.
  *
+ * <example>
+ * <title>Typical extension rendering</title>
+ * <inlinegraphic fileref="extensions.png" format="PNG"/>
+ * </example>
+ *
  * Since: 3.0
  **/
 void
diff --git a/tests/styleexamples.c b/tests/styleexamples.c
index b66add5..6b65ba8 100644
--- a/tests/styleexamples.c
+++ b/tests/styleexamples.c
@@ -226,7 +226,44 @@ draw_cb_slider (GtkWidget *widget, cairo_t *cr)
   return TRUE;
 }
 
+static gboolean
+draw_cb_focus (GtkWidget *widget, cairo_t *cr)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (widget);
+
+  gtk_style_context_save (context);
+
+  gtk_render_focus (context, cr, 12, 12, 50, 50);
+
+  gtk_style_context_restore (context);
+
+  return TRUE;
+}
+
+static gboolean
+draw_cb_extension (GtkWidget *widget, cairo_t *cr)
+{
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (widget);
+
+  gtk_style_context_save (context);
 
+  gtk_style_context_add_class (context, "notebook");
+  gtk_style_context_add_region (context, GTK_STYLE_REGION_TAB, 0);
+
+  gtk_style_context_set_state (context, 0);
+  gtk_render_extension (context, cr, 26, 12, 24, 12, GTK_POS_BOTTOM);
+  gtk_render_extension (context, cr, 12, 26, 12, 24, GTK_POS_RIGHT);
+  gtk_render_extension (context, cr, 26, 52, 24, 12, GTK_POS_TOP);
+  gtk_render_extension (context, cr, 52, 26, 12, 24, GTK_POS_LEFT);
+
+  gtk_style_context_restore (context);
+
+  return TRUE;
+}
 
 static char *what;
 
@@ -249,6 +286,10 @@ draw_cb (GtkWidget *widget, cairo_t *cr)
     return draw_cb_activity (widget, cr);
   else if (strcmp (what, "slider") == 0)
     return draw_cb_slider (widget, cr);
+  else if (strcmp (what, "focus") == 0)
+    return draw_cb_focus (widget, cr);
+  else if (strcmp (what, "extension") == 0)
+    return draw_cb_extension (widget, cr);
 
   return FALSE;
 }