From 24caf0db2af4d43a2d8bf1cd6dff7e54d5268502 Mon Sep 17 00:00:00 2001
From: Michael Natterer <mitch@gimp.org>
Date: Thu, 14 Mar 2013 16:54:38 +0100
Subject: [PATCH 45/68] gtk: clip NSViews to the scrolled window's
 overshoot_window

not to the viewport's allocation. This is ugly but by far the
easiest way to get clipping right.
---
 gtk/gtknsview.c    |   31 +++++++++++++++++++++++++++++++
 tests/testnsview.c |    3 ++-
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/gtk/gtknsview.c b/gtk/gtknsview.c
index 84d758f..db1da93 100644
--- a/gtk/gtknsview.c
+++ b/gtk/gtknsview.c
@@ -160,6 +160,7 @@ gtk_ns_view_init (GtkNSView *ns_view)

   if (viewport)
     {
+      GdkWindow *window;
       CGContextRef cg_context = [[NSGraphicsContext currentContext] graphicsPort];
       GtkAllocation viewport_allocation;
       CGRect rect;
@@ -170,6 +171,36 @@ gtk_ns_view_init (GtkNSView *ns_view)

       gtk_widget_get_allocation (viewport, &viewport_allocation);

+#if 0
+      g_printerr ("viewport allocation: %d, %d (%d x %x)\n",
+                  viewport_allocation.x,
+                  viewport_allocation.y,
+                  viewport_allocation.width,
+                  viewport_allocation.height);
+#endif
+
+      /* evil: don't clip to the viewport's width/height but to that
+       * of its parent window, because we know we hacked an
+       * overshoot_window into GtkScrolledWindow and need to restrict
+       * rendering in its area
+       */
+      window = gtk_widget_get_parent_window (viewport);
+
+      viewport_allocation.width = gdk_window_get_width (window);
+      viewport_allocation.height = gdk_window_get_height (window);
+
+#if 0
+      {
+        gint x, y;
+
+        gdk_window_get_position (window, &x, &y);
+        g_printerr ("viewport parent window at %d, %d (%x x %x)\n",
+                    x, y,
+                    gdk_window_get_width (window),
+                    gdk_window_get_height (window));
+      }
+#endif
+
       if (gtk_viewport_get_shadow_type (GTK_VIEWPORT (viewport)) != GTK_SHADOW_NONE)
         {
           GtkStyle *style = gtk_widget_get_style (viewport);
diff --git a/tests/testnsview.c b/tests/testnsview.c
index 1a523e6..24d1d41 100644
--- a/tests/testnsview.c
+++ b/tests/testnsview.c
@@ -149,7 +149,8 @@ main (gint   argc,
     NSTextField *text_field;

     sw = gtk_scrolled_window_new (NULL, NULL);
-    gtk_widget_set_size_request (sw, -1, 100);
+    gtk_widget_set_size_request (sw, -1, 130);
+    gtk_container_set_border_width (GTK_CONTAINER (sw), 20);
     gtk_box_pack_start (GTK_BOX (vbox), sw, FALSE, FALSE, 0);
     gtk_widget_show (sw);

--
1.7.10.2 (Apple Git-33)