[gtk/dnd-gestures-2: 85/175] Get rid of GtkDragDestInfo

[Matthias Clasen <matthiasc src gnome org>]

commit 399dc70bb0cba7e8c43b663f864c75b3ce613440
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jan 5 23:09:26 2020 -0500

    Get rid of GtkDragDestInfo
    
    We can just attach the GtkDropTarget directly to
    the GdkDrop.

 gtk/gtkdnd.c        | 64 ++++++++++++++++++++---------------------------------
 gtk/gtkdndprivate.h | 19 +++++-----------
 gtk/gtkdragdest.c   | 18 +++++++--------
 3 files changed, 38 insertions(+), 63 deletions(-)
---
diff --git a/gtk/gtkdnd.c b/gtk/gtkdnd.c
index eff878ed03..1ebbf9666a 100644
--- a/gtk/gtkdnd.c
+++ b/gtk/gtkdnd.c
@@ -80,7 +80,7 @@ void
 _gtk_drag_dest_handle_event (GtkWidget *toplevel,
                              GdkEvent  *event)
 {
-  GtkDragDestInfo *info;
+  GtkDropTarget *dest;
   GdkDrop *drop;
   GdkEventType event_type;
 
@@ -90,8 +90,6 @@ _gtk_drag_dest_handle_event (GtkWidget *toplevel,
   event_type = gdk_event_get_event_type (event);
   drop = gdk_event_get_drop (event);
 
-  info = gtk_drag_get_dest_info (drop, TRUE);
-
   /* Find the widget for the event */
   switch ((guint) event_type)
     {
@@ -99,13 +97,14 @@ _gtk_drag_dest_handle_event (GtkWidget *toplevel,
       break;
       
     case GDK_DRAG_LEAVE:
-      if (info->dest)
+      dest = gtk_drop_get_current_dest (drop);
+      if (dest)
         {
-          gtk_drop_target_emit_drag_leave (info->dest, drop);
-          gtk_drag_dest_set_target (info, NULL);
+          gtk_drop_target_emit_drag_leave (dest, drop);
+          gtk_drop_set_current_dest (drop, NULL);
         }
       break;
-      
+
     case GDK_DRAG_MOTION:
     case GDK_DROP_START:
       {
@@ -202,46 +201,31 @@ gtk_drop_find_widget (GtkWidget *event_widget,
   return FALSE;
 }
 
-void
-gtk_drag_dest_set_target (GtkDragDestInfo *info,
-                          GtkDropTarget   *dest)
+static void
+clear_current_dest (gpointer data, GObject *former_object)
 {
-  if (info->dest)
-    g_object_remove_weak_pointer (G_OBJECT (info->dest), (gpointer *) &info->dest);
-
-  info->dest = dest;
-
-  if (info->dest)
-    g_object_add_weak_pointer (G_OBJECT (info->dest), (gpointer *) &info->dest);
+  g_object_set_data (G_OBJECT (data), "current-dest", NULL);
 }
 
-static void
-gtk_drag_dest_info_destroy (gpointer data)
+void
+gtk_drop_set_current_dest (GdkDrop       *drop,
+                           GtkDropTarget *dest)
 {
-  GtkDragDestInfo *info = (GtkDragDestInfo *)data;
+  GtkDropTarget *old_dest;
+
+  old_dest = g_object_get_data (G_OBJECT (drop), "current-dest");
+
+  if (old_dest)
+    g_object_weak_unref (G_OBJECT (old_dest), clear_current_dest, drop);
 
-  gtk_drag_dest_set_target (info, NULL);
+  g_object_set_data (G_OBJECT (drop), "current-dest", dest);
 
-  g_slice_free (GtkDragDestInfo, data);
+  if (dest)
+    g_object_weak_ref (G_OBJECT (dest), clear_current_dest, drop);
 }
 
-GtkDragDestInfo *
-gtk_drag_get_dest_info (GdkDrop  *drop,
-                        gboolean  create)
+GtkDropTarget *
+gtk_drop_get_current_dest (GdkDrop *drop)
 {
-  GtkDragDestInfo *info;
-  static GQuark info_quark = 0;
-  if (!info_quark)
-    info_quark = g_quark_from_static_string ("gtk-dest-info");
-  
-  info = g_object_get_qdata (G_OBJECT (drop), info_quark);
-  if (!info && create)
-    {
-      info = g_slice_new0 (GtkDragDestInfo);
-      info->drop = drop;
-      g_object_set_qdata_full (G_OBJECT (drop), info_quark,
-                               info, gtk_drag_dest_info_destroy);
-    }
-
-  return info;
+  return g_object_get_data (G_OBJECT (drop), "current-dest");
 }
diff --git a/gtk/gtkdndprivate.h b/gtk/gtkdndprivate.h
index b316a9fded..a520b1cf08 100644
--- a/gtk/gtkdndprivate.h
+++ b/gtk/gtkdndprivate.h
@@ -25,21 +25,12 @@
 
 G_BEGIN_DECLS
 
-void                    _gtk_drag_dest_handle_event     (GtkWidget              *toplevel,
-                                                        GdkEvent               *event);
+void           _gtk_drag_dest_handle_event (GtkWidget     *toplevel,
+                                           GdkEvent      *event);
 
-typedef struct _GtkDragDestInfo GtkDragDestInfo;
-
-struct _GtkDragDestInfo
-{
-  GtkDropTarget     *dest;
-  GdkDrop           *drop;                /* drop */
-};
-
-GtkDragDestInfo * gtk_drag_get_dest_info   (GdkDrop          *drop,
-                                            gboolean          create);
-void              gtk_drag_dest_set_target (GtkDragDestInfo  *info,
-                                            GtkDropTarget    *dest);
+void           gtk_drop_set_current_dest (GdkDrop       *drop,
+                                          GtkDropTarget *dest);
+GtkDropTarget *gtk_drop_get_current_dest (GdkDrop       *drop);
 
 G_END_DECLS
 
diff --git a/gtk/gtkdragdest.c b/gtk/gtkdragdest.c
index cd12f995ed..0dc2c27761 100644
--- a/gtk/gtkdragdest.c
+++ b/gtk/gtkdragdest.c
@@ -691,14 +691,14 @@ gtk_drop_target_handle_event (GtkEventController *controller,
 {
   GtkDropTarget *dest = GTK_DROP_TARGET (controller);
   GdkDrop *drop;
-  GtkDragDestInfo *info;
+  GtkDropTarget *old_dest;
   double x, y;
   gboolean found = FALSE;
 
   gdk_event_get_coords (event, &x, &y);
 
   drop = gdk_event_get_drop (event);
-  info = gtk_drag_get_dest_info (drop, TRUE);
+  old_dest = gtk_drop_get_current_dest (drop);
 
   switch ((int)gdk_event_get_event_type (event))
     {
@@ -710,10 +710,10 @@ gtk_drop_target_handle_event (GtkEventController *controller,
       /* We send a leave before the drop so that the widget unhighlights
        * properly.
        */
-      if (info->dest)
+      if (old_dest)
         {
-          gtk_drop_target_emit_drag_leave (info->dest, drop);
-          gtk_drag_dest_set_target (info, NULL);
+          gtk_drop_target_emit_drag_leave (old_dest, drop);
+          gtk_drop_set_current_dest (drop, NULL);
         }
 
       found = gtk_drop_target_emit_drag_drop (dest, drop, x, y);
@@ -725,13 +725,13 @@ gtk_drop_target_handle_event (GtkEventController *controller,
 
   if (found)
     {
-      if (info->dest && info->dest != dest)
+      if (old_dest && old_dest != dest)
         {
-          gtk_drop_target_emit_drag_leave (info->dest, drop);
-          gtk_drag_dest_set_target (info, NULL);
+          gtk_drop_target_emit_drag_leave (old_dest, drop);
+          gtk_drop_set_current_dest (drop, NULL);
         }
 
-      gtk_drag_dest_set_target (info, dest);
+      gtk_drop_set_current_dest (drop, dest);
     }
 
   return found;