[gtk+/wip/events: 9/19] gtk: Invoke trackers and recognizers

[Benjamin Otte <otte src gnome org>]

commit f375f46a9154be210c9706f587c74b67dd5499e4
Author: Benjamin Otte <otte redhat com>
Date:   Mon Mar 12 02:24:03 2012 +0100

    gtk: Invoke trackers and recognizers
    
    Adds the basic plumbing necessary to ensure recognizers and trackers get
    invoked.

 gtk/gtkmain.c   |   16 ++++++++++++++++
 gtk/gtkwidget.c |   27 +++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 65df934..847c4d4 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -114,6 +114,7 @@
 #include "gtkclipboard.h"
 #include "gtkdebug.h"
 #include "gtkdnd.h"
+#include "gtkeventtrackerprivate.h"
 #include "gtkmain.h"
 #include "gtkmenu.h"
 #include "gtkmodules.h"
@@ -1647,6 +1648,9 @@ gtk_main_do_event (GdkEvent *event)
     case GDK_WINDOW_STATE:
     case GDK_GRAB_BROKEN:
     case GDK_DAMAGE:
+      if (_gtk_event_trackers_invoke (event))
+        break;
+
       if (!_gtk_widget_captured_event (event_widget, event))
         gtk_widget_event (event_widget, event);
       break;
@@ -1656,6 +1660,9 @@ gtk_main_do_event (GdkEvent *event)
     case GDK_2BUTTON_PRESS:
     case GDK_3BUTTON_PRESS:
     case GDK_TOUCH_BEGIN:
+      if (_gtk_event_trackers_invoke (event))
+        break;
+
       if (!_gtk_propagate_captured_event (grab_widget, event, topmost_widget))
         gtk_propagate_event (grab_widget, event);
       break;
@@ -1709,11 +1716,17 @@ gtk_main_do_event (GdkEvent *event)
     case GDK_TOUCH_UPDATE:
     case GDK_TOUCH_END:
     case GDK_TOUCH_CANCEL:
+      if (_gtk_event_trackers_invoke (event))
+        break;
+
       if (!_gtk_propagate_captured_event (grab_widget, event, topmost_widget))
         gtk_propagate_event (grab_widget, event);
       break;
 
     case GDK_ENTER_NOTIFY:
+      if (_gtk_event_trackers_invoke (event))
+        break;
+
       if (event->crossing.detail != GDK_NOTIFY_VIRTUAL &&
           event->crossing.detail != GDK_NOTIFY_NONLINEAR_VIRTUAL)
         _gtk_widget_set_device_window (event_widget,
@@ -1725,6 +1738,9 @@ gtk_main_do_event (GdkEvent *event)
       break;
 
     case GDK_LEAVE_NOTIFY:
+      if (_gtk_event_trackers_invoke (event))
+        break;
+
       if (event->crossing.detail != GDK_NOTIFY_VIRTUAL &&
           event->crossing.detail != GDK_NOTIFY_NONLINEAR_VIRTUAL)
         _gtk_widget_set_device_window (event_widget,
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 0beea08..99a58de 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -6282,6 +6282,31 @@ event_window_is_still_viewable (GdkEvent *event)
     }
 }
 
+static gboolean
+gtk_widget_invoke_recognizers (GtkWidget *widget,
+                               GdkEvent  *event)
+{
+  GtkWidgetClass *klass = GTK_WIDGET_GET_CLASS (widget);
+  GtkWidgetClassPrivate *priv = klass->priv;
+  guint i;
+  gboolean eat_event = FALSE;
+
+  if (priv->recognizers == NULL)
+    return FALSE;
+
+  g_object_ref (widget);
+
+  for (i = 0; i < priv->recognizers->len; i++)
+    {
+      GtkEventRecognizer *recognizer = g_ptr_array_index (priv->recognizers, i);
+      _gtk_event_recognizer_recognize (recognizer, widget, event);
+    }
+
+  g_object_unref (widget);
+
+  return eat_event;
+}
+
 static gint
 gtk_widget_event_internal (GtkWidget *widget,
 			   GdkEvent  *event)
@@ -6296,6 +6321,8 @@ gtk_widget_event_internal (GtkWidget *widget,
   if (!event_window_is_still_viewable (event))
     return TRUE;
 
+  gtk_widget_invoke_recognizers (widget, event);
+
   g_object_ref (widget);
 
   g_signal_emit (widget, widget_signals[EVENT], 0, event, &return_val);