Fake middle clicks without gtk_button_{press,release}, which are deprecated

Factor the logic that fakes clicks from a middle click in
EphyMiddleClick(Tool)Button by forwarding a left click to GTK+ when we
receive a middle click. Since ephy_gui_is_middle_click stops working
in this case, add the minimal logic in EphyLinkAction to make it work
again (basically, cache the button that activated the action inside
the action itself).

The EphyMiddleClickable(Tool)Button classes were written by Alexandre
Mazari.

https://bugzilla.gnome.org/show_bug.cgi?id=628364

1 files changed, 68 insertions, 0 deletions

diff --git a/lib/widgets/ephy-middle-clickable-button.c b/lib/widgets/ephy-middle-clickable-button.c
new file mode 100644
index 000000000..1e6f53e98
--- /dev/null
+++ b/lib/widgets/ephy-middle-clickable-button.c
@@ -0,0 +1,68 @@
+/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ *  Copyright © 2011 Alexandre Mazari
+ *  Copyright © 2011 Igalia S.L.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "ephy-middle-clickable-button.h"
+
+G_DEFINE_TYPE (EphyMiddleClickableButton, ephy_middle_clickable_button, GTK_TYPE_BUTTON)
+
+static gboolean 
+ephy_middle_clickable_button_handle_event (GtkWidget * widget,
+                                           GdkEventButton * event)
+{
+  gboolean ret;
+  int actual_button;
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (ephy_middle_clickable_button_parent_class);
+
+  actual_button = event->button;
+
+  if (actual_button == 2)
+    event->button = 1;
+
+  if (event->type == GDK_BUTTON_PRESS)
+    ret = widget_class->button_press_event (widget, event);
+  else
+    ret = widget_class->button_release_event (widget, event);
+  
+  event->button = actual_button;
+
+  return ret;
+}
+
+static void
+ephy_middle_clickable_button_class_init (EphyMiddleClickableButtonClass *class)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+
+  widget_class->button_press_event = ephy_middle_clickable_button_handle_event;
+  widget_class->button_release_event = ephy_middle_clickable_button_handle_event;
+}
+
+static void
+ephy_middle_clickable_button_init (EphyMiddleClickableButton *class)
+{
+}
+
+GtkWidget *
+ephy_middle_clickable_button_new ()
+{
+  return gtk_widget_new (EPHY_TYPE_MIDDLE_CLICKABLE_BUTTON, NULL);
+}