[gtk+/wip/baedert/drawing: 216/306] widget: Draw widget clips with GEOMETRY debugging

[Timm Bäder <baedert src gnome org>]

commit f41da36226f4c048b2ecf825b5d661d691331b85
Author: Timm Bäder <mail baedert org>
Date:   Mon May 22 11:37:04 2017 +0200

    widget: Draw widget clips with GEOMETRY debugging

 gtk/gtkwidget.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 9aa82b9..3c84bc7 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -15465,6 +15465,38 @@ gtk_widget_maybe_add_debug_render_nodes (GtkWidget             *widget,
       priv->highlight_resize = FALSE;
       gtk_widget_queue_draw (widget);
     }
+
+  if (GTK_DISPLAY_DEBUG_CHECK (display, GEOMETRY))
+    {
+      GdkRGBA clip_color = {0, 0, 1, 0.7};
+      GtkAllocation offset_clip;
+      graphene_rect_t bounds;
+
+      offset_clip = priv->clip;
+      offset_clip.x -= priv->allocation.x;
+      offset_clip.y -= priv->allocation.y;
+
+      graphene_rect_init (&bounds,
+                          offset_clip.x, offset_clip.y,
+                          offset_clip.width, 1);
+      gtk_snapshot_append_color (snapshot, &clip_color, &bounds, "Clip Top");
+
+      graphene_rect_init (&bounds,
+                          offset_clip.x, offset_clip.y + offset_clip.height - 1,
+                          offset_clip.width, 1);
+      gtk_snapshot_append_color (snapshot, &clip_color, &bounds, "Clip bottom");
+
+      graphene_rect_init (&bounds,
+                          offset_clip.x, offset_clip.y + 1,
+                          1, offset_clip.height - 2);
+      gtk_snapshot_append_color (snapshot, &clip_color, &bounds, "Clip left");
+
+      graphene_rect_init (&bounds,
+                          offset_clip.x + offset_clip.width - 1, offset_clip.y + 1,
+                          1, offset_clip.height - 2);
+      gtk_snapshot_append_color (snapshot, &clip_color, &bounds, "Clip right");
+
+    }
 }
 
 void