[gtk+] entry: Improve cursor hiding logic

[Matthias Clasen <matthiasc src gnome org>]

commit 587afb5b1c51f68eb49b630f0addbaf1d569f23e
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Sep 3 13:16:02 2015 -0400

    entry: Improve cursor hiding logic
    
    Previously, we just hid the cursor if a key event was adding text,
    but not when you used backspace, or Ctrl-V. Rearrange things so that
    we obscure the cursor whenever the buffer contents change while we
    are handling key events.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=754535

 gtk/gtkentry.c |   35 +++++++++++++++++++++++++++--------
 1 files changed, 27 insertions(+), 8 deletions(-)
---
diff --git a/gtk/gtkentry.c b/gtk/gtkentry.c
index a7d04fb..330ccbd 100644
--- a/gtk/gtkentry.c
+++ b/gtk/gtkentry.c
@@ -232,6 +232,7 @@ struct _GtkEntryPrivate
   guint         cursor_handle_dragged   : 1;
   guint         selection_handle_dragged : 1;
   guint         populate_all            : 1;
+  guint         handling_key_event      : 1;
 };
 
 struct _EntryIconInfo
@@ -4842,6 +4843,9 @@ gtk_entry_key_press (GtkWidget   *widget,
 {
   GtkEntry *entry = GTK_ENTRY (widget);
   GtkEntryPrivate *priv = entry->priv;
+  gboolean retval = FALSE;
+
+  priv->handling_key_event = TRUE;
 
   gtk_entry_reset_blink_time (entry);
   gtk_entry_pend_cursor_blink (entry);
@@ -4856,9 +4860,9 @@ gtk_entry_key_press (GtkWidget   *widget,
     {
       if (gtk_im_context_filter_keypress (priv->im_context, event))
        {
-         gtk_entry_obscure_mouse_cursor (entry);
          priv->need_im_reset = TRUE;
-         return TRUE;
+         retval = TRUE;
+          goto out;
        }
     }
 
@@ -4869,14 +4873,19 @@ gtk_entry_key_press (GtkWidget   *widget,
     gtk_entry_reset_im_context (entry);
 
   if (GTK_WIDGET_CLASS (gtk_entry_parent_class)->key_press_event (widget, event))
-    /* Activate key bindings
-     */
-    return TRUE;
+    {
+      /* Activate key bindings */
+      retval = TRUE;
+      goto out;
+    }
 
   if (!priv->editable && event->length)
     gtk_widget_error_bell (widget);
 
-  return FALSE;
+out:
+  priv->handling_key_event = FALSE;
+
+  return retval;
 }
 
 static gint
@@ -4885,17 +4894,25 @@ gtk_entry_key_release (GtkWidget   *widget,
 {
   GtkEntry *entry = GTK_ENTRY (widget);
   GtkEntryPrivate *priv = entry->priv;
+  gboolean retval = FALSE;
+
+  priv->handling_key_event = TRUE;
 
   if (priv->editable)
     {
       if (gtk_im_context_filter_keypress (priv->im_context, event))
        {
          priv->need_im_reset = TRUE;
-         return TRUE;
+         retval = TRUE;
+          goto out;
        }
     }
 
-  return GTK_WIDGET_CLASS (gtk_entry_parent_class)->key_release_event (widget, event);
+  retval = GTK_WIDGET_CLASS (gtk_entry_parent_class)->key_release_event (widget, event);
+
+out:
+  priv->handling_key_event = FALSE;
+  return retval;
 }
 
 static gint
@@ -5473,6 +5490,8 @@ buffer_notify_text (GtkEntryBuffer *buffer,
                     GParamSpec     *spec,
                     GtkEntry       *entry)
 {
+  if (entry->priv->handling_key_event)
+    gtk_entry_obscure_mouse_cursor (entry);
   gtk_entry_recompute (entry);
   emit_changed (entry);
   g_object_notify (G_OBJECT (entry), "text");