[gtksourceview/wip/chergert/remove-event-usage: 1/2] schemechooserwidget: remove use of GtkEventBox

[Christian Hergert <chergert src gnome org>]

commit e1e20f9e71c5d8f8243c30ff9bcb11e1213904a5
Author: Christian Hergert <chergert redhat com>
Date:   Tue Aug 27 20:13:26 2019 +0300

    schemechooserwidget: remove use of GtkEventBox
    
    GtkEventBox is removed in GTK 4, so we can remove it now to ease the
    process of porting to GTK 4 later on.

 gtksourceview/gtksourcestyleschemechooserwidget.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)
---
diff --git a/gtksourceview/gtksourcestyleschemechooserwidget.c 
b/gtksourceview/gtksourcestyleschemechooserwidget.c
index f3e13c66..65b15b1b 100644
--- a/gtksourceview/gtksourcestyleschemechooserwidget.c
+++ b/gtksourceview/gtksourcestyleschemechooserwidget.c
@@ -138,9 +138,10 @@ make_row (GtkSourceStyleScheme *scheme,
 {
        GtkWidget *row;
        AtkObject *accessible;
-       GtkWidget *event;
        GtkSourceBuffer *buffer;
        GtkWidget *view;
+       GtkWidget *overlay;
+       GtkWidget *label;
        gchar *text;
 
        row = gtk_list_box_row_new ();
@@ -151,11 +152,6 @@ make_row (GtkSourceStyleScheme *scheme,
 
        g_object_set_data (G_OBJECT (row), "scheme", scheme);
 
-       event = gtk_event_box_new ();
-       gtk_event_box_set_above_child (GTK_EVENT_BOX (event), TRUE);
-       gtk_widget_show (event);
-       gtk_container_add (GTK_CONTAINER (row), event);
-
        buffer = gtk_source_buffer_new_with_language (language);
        gtk_source_buffer_set_highlight_matching_brackets (buffer, FALSE);
        gtk_source_buffer_set_style_scheme (buffer, scheme);
@@ -165,6 +161,10 @@ make_row (GtkSourceStyleScheme *scheme,
        gtk_text_buffer_set_text (GTK_TEXT_BUFFER (buffer), text, -1);
        g_free (text);
 
+       overlay = gtk_overlay_new ();
+       gtk_container_add (GTK_CONTAINER (row), overlay);
+       gtk_widget_show (overlay);
+
        view = g_object_new (GTK_SOURCE_TYPE_VIEW,
                             "buffer", buffer,
                             "can-focus", FALSE,
@@ -176,7 +176,15 @@ make_row (GtkSourceStyleScheme *scheme,
                             "show-right-margin", TRUE,
                             "margin", 2,
                             NULL);
-       gtk_container_add (GTK_CONTAINER (event), view);
+       gtk_container_add (GTK_CONTAINER (overlay), view);
+
+       label = g_object_new (GTK_TYPE_LABEL,
+                             "can-focus", FALSE,
+                             "expand", TRUE,
+                             "selectable", FALSE,
+                             "visible", TRUE,
+                             NULL);
+       gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
 
        return row;
 }