[gtk+/gestures: 41/117] widget: Make helper gesture API take GtkGestures

[Carlos Garnacho <carlosg src gnome org>]

commit a380fe0b55b32920e85fd6bd35905c8c738df747
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Mar 24 14:35:17 2014 +0100

    widget: Make helper gesture API take GtkGestures
    
    GtkEventController may be certainly useful to keep event
    handling self-contained in other places than gestures, but
    the current widget API is highly related to gestures, so
    just using GtkGesture as the argument there will be quite
    more convenient. The other places where GtkEventController
    make sense as a base object will better provide their own
    hooks.

 gtk/gtkwidget.c |   99 ++++++++++++++++++++++++++----------------------------
 gtk/gtkwidget.h |   12 +++---
 2 files changed, 54 insertions(+), 57 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index b902630..fb09263 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -398,7 +398,7 @@ typedef struct {
 } GtkWidgetTemplate;
 
 typedef struct {
-  GtkEventController *controller;
+  GtkGesture *controller;
   guint evmask_notify_id;
   guint propagation_phase : 2;
 } EventControllerData;
@@ -7098,7 +7098,7 @@ _gtk_widget_get_controllers_evmask (GtkWidget *widget)
   for (l = priv->event_controllers; l; l = l->next)
     {
       data = l->data;
-      evmask |= gtk_event_controller_get_event_mask (data->controller);
+      evmask |= gtk_event_controller_get_event_mask (GTK_EVENT_CONTROLLER (data->controller));
     }
 
   return evmask;
@@ -7121,7 +7121,8 @@ _gtk_widget_run_controllers (GtkWidget           *widget,
       data = l->data;
 
       if (data->propagation_phase == phase)
-        handled |= gtk_event_controller_handle_event (data->controller, event);
+        handled |= gtk_event_controller_handle_event (GTK_EVENT_CONTROLLER (data->controller),
+                                                      event);
     }
 
   return handled;
@@ -11830,7 +11831,7 @@ gtk_widget_finalize (GObject *object)
   while (priv->event_controllers)
     {
       data = priv->event_controllers->data;
-      gtk_widget_remove_controller (widget, data->controller);
+      gtk_widget_remove_gesture (widget, data->controller);
     }
 
   if (g_object_is_floating (object))
@@ -16489,75 +16490,82 @@ event_controller_notify_event_mask (GtkEventController *controller,
   gtk_widget_add_events_internal (widget, NULL, evmask);
 }
 
-void
-gtk_widget_add_controller (GtkWidget           *widget,
-                           GtkEventController  *controller,
-                           GtkPropagationPhase  phase)
+EventControllerData *
+_gtk_widget_has_gesture (GtkWidget  *widget,
+                         GtkGesture *gesture)
 {
   EventControllerData *data;
   GtkWidgetPrivate *priv;
   GList *l;
 
-  g_return_if_fail (GTK_IS_WIDGET (widget));
-  g_return_if_fail (GTK_IS_EVENT_CONTROLLER (controller));
-  g_return_if_fail (phase >= GTK_PHASE_NONE &&
-                    phase <= GTK_PHASE_BUBBLE);
-
   priv = widget->priv;
 
   for (l = priv->event_controllers; l; l = l->next)
     {
       data = l->data;
+      if (data->controller == gesture)
+        return data;
+    }
 
-      if (data->controller != controller)
-        continue;
+  return NULL;
+}
 
-      data->propagation_phase = phase;
-      return;
-    }
+void
+gtk_widget_add_gesture (GtkWidget           *widget,
+                        GtkGesture          *gesture,
+                        GtkPropagationPhase  phase)
+{
+  EventControllerData *data;
+  GtkWidgetPrivate *priv;
+
+  g_return_if_fail (GTK_IS_WIDGET (widget));
+  g_return_if_fail (GTK_IS_GESTURE (gesture));
+  g_return_if_fail (phase >= GTK_PHASE_NONE &&
+                    phase <= GTK_PHASE_BUBBLE);
+  g_return_if_fail (!_gtk_widget_has_gesture (widget, gesture));
+
+  priv = widget->priv;
 
   data = g_new0 (EventControllerData, 1);
-  data->controller = g_object_ref (controller);
+  data->controller = g_object_ref (gesture);
   data->propagation_phase = phase;
   data->evmask_notify_id =
-    g_signal_connect (controller, "notify::event-mask",
+    g_signal_connect (gesture, "notify::event-mask",
                       G_CALLBACK (event_controller_notify_event_mask), widget);
 
   priv->event_controllers = g_list_prepend (priv->event_controllers, data);
 }
 
 void
-gtk_widget_remove_controller (GtkWidget           *widget,
-                              GtkEventController  *controller)
+gtk_widget_remove_gesture (GtkWidget  *widget,
+                           GtkGesture *gesture)
 {
   EventControllerData *data;
   GtkWidgetPrivate *priv;
-  GList *l;
 
   g_return_if_fail (GTK_IS_WIDGET (widget));
-  g_return_if_fail (GTK_IS_EVENT_CONTROLLER (controller));
+  g_return_if_fail (GTK_IS_GESTURE (gesture));
 
   priv = widget->priv;
+  data = _gtk_widget_has_gesture (widget, gesture);
 
-  for (l = priv->event_controllers; l; l = l->next)
-    {
-      data = l->data;
+  if (!data)
+    return;
 
-      if (data->controller != controller)
-        continue;
+  priv->event_controllers = g_list_remove (priv->event_controllers, data);
 
-      gtk_event_controller_reset (data->controller);
-      g_signal_handler_disconnect (data->controller, data->evmask_notify_id);
-      g_object_unref (data->controller);
-      g_free (data);
-      priv->event_controllers = g_list_delete_link (priv->event_controllers, l);
-      return;
-    }
+  if (g_signal_handler_is_connected (widget, data->grab_notify_id))
+    g_signal_handler_disconnect (widget, data->grab_notify_id);
+
+  g_signal_handler_disconnect (data->controller, data->evmask_notify_id);
+  gtk_event_controller_reset (GTK_EVENT_CONTROLLER (data->controller));
+  g_object_unref (data->controller);
+  g_free (data);
 }
 
 GList *
-gtk_widget_list_controllers (GtkWidget           *widget,
-                             GtkPropagationPhase  phase)
+gtk_widget_list_gestures (GtkWidget           *widget,
+                          GtkPropagationPhase  phase)
 {
   EventControllerData *data;
   GtkWidgetPrivate *priv;
@@ -16597,12 +16605,7 @@ gtk_widget_get_sequence_state (GtkWidget        *widget,
   for (l = priv->event_controllers; l; l = l->next)
     {
       data = l->data;
-
-      if (!GTK_IS_GESTURE (data->controller))
-        continue;
-
-      state = gtk_gesture_get_sequence_state (GTK_GESTURE (data->controller),
-                                              sequence);
+      state = gtk_gesture_get_sequence_state (data->controller, sequence);
       if (state != GTK_EVENT_SEQUENCE_NONE)
         return state;
     }
@@ -16615,10 +16618,8 @@ gtk_widget_set_sequence_state (GtkWidget             *widget,
                                GdkEventSequence      *sequence,
                                GtkEventSequenceState  state)
 {
-  EventControllerData *data;
   gboolean handled = FALSE;
   GtkWidget *event_widget;
-  GtkWidgetPrivate *priv;
   const GdkEvent *event;
 
   g_return_if_fail (GTK_IS_WIDGET (widget));
@@ -16631,16 +16632,12 @@ gtk_widget_set_sequence_state (GtkWidget             *widget,
   if (!handled)
     return;
 
-  priv = widget->priv;
-  data = priv->event_controllers->data;
-  event = gtk_gesture_get_last_event (GTK_GESTURE (data->controller), sequence);
+  event = _gtk_widget_get_last_event (widget, sequence);
 
   if (!event)
     return;
 
   event_widget = gtk_get_event_widget ((GdkEvent *) event);
-  g_assert (widget == event_widget ||
-            gtk_widget_is_ancestor (event_widget, widget));
 
   while (event_widget)
     {
diff --git a/gtk/gtkwidget.h b/gtk/gtkwidget.h
index c06fd41..bad8950 100644
--- a/gtk/gtkwidget.h
+++ b/gtk/gtkwidget.h
@@ -33,7 +33,7 @@
 #include <gtk/gtkaccelgroup.h>
 #include <gtk/gtkborder.h>
 #include <gtk/gtktypes.h>
-#include <gtk/gtkeventcontroller.h>
+#include <gtk/gtkgesture.h>
 #include <atk/atk.h>
 
 G_BEGIN_DECLS
@@ -1471,14 +1471,14 @@ void    gtk_widget_class_bind_template_child_full       (GtkWidgetClass        *
                                                         gssize                 struct_offset);
 
 GDK_AVAILABLE_IN_3_14
-void    gtk_widget_add_controller                       (GtkWidget           *widget,
-                                                         GtkEventController  *controller,
+void    gtk_widget_add_gesture                          (GtkWidget           *widget,
+                                                         GtkGesture          *gesture,
                                                          GtkPropagationPhase  phase);
 GDK_AVAILABLE_IN_3_14
-void    gtk_widget_remove_controller                    (GtkWidget           *widget,
-                                                         GtkEventController  *controller);
+void    gtk_widget_remove_gesture                       (GtkWidget           *widget,
+                                                         GtkGesture          *gesture);
 GDK_AVAILABLE_IN_3_14
-GList * gtk_widget_list_controllers                     (GtkWidget           *widget,
+GList * gtk_widget_list_gestures                        (GtkWidget           *widget,
                                                          GtkPropagationPhase  phase);
 
 GDK_AVAILABLE_IN_3_14