From: Christian Hergert <chergert@redhat.com>
Date: Fri, 13 Sep 2019 23:26:26 +0000 (-0700)
Subject: textview: clip to text window when drawing
X-Git-Tag: archive/raspbian/4.4.1+ds1-2+rpi1~1^2~321^2^2~851^2
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=7927f7a4402090e134c9c870c5609227bdfbd39a;p=gtk4.git

textview: clip to text window when drawing

When drawing the GtkTextView text, we need to clip to the visible area
so that we do not risk drawing under the border windows.
---

diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 4568e735fe..dbf89dfa84 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -5403,6 +5403,12 @@ draw_text (GtkWidget   *widget,
       gtk_snapshot_translate (snapshot, &translate);
     }
 
+  gtk_snapshot_push_clip (snapshot,
+                          &GRAPHENE_RECT_INIT (0,
+                                               0,
+                                               SCREEN_WIDTH (widget),
+                                               SCREEN_HEIGHT (widget)));
+
   context = gtk_widget_get_style_context (widget);
   gtk_style_context_save_to_node (context, text_view->priv->text_window->css_node);
   gtk_snapshot_render_background (snapshot, context,
@@ -5433,6 +5439,8 @@ draw_text (GtkWidget   *widget,
       gtk_snapshot_restore (snapshot);
     }
 
+  gtk_snapshot_pop (snapshot);
+
   if (translate.x || translate.y)
     gtk_snapshot_restore (snapshot);
 }