Adds support for autoscrolling on drag to bookmark tree/table....

chrome/views/chrome_menu.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/views/chrome_menu.h"
 
 #include <windows.h>
 #include <uxtheme.h>
 #include <Vssym32.h>
 
 #include "base/base_drag_source.h"
 #include "base/gfx/native_theme.h"
 #include "base/gfx/skia_utils.h"
 #include "base/message_loop.h"
 #include "base/task.h"
 #include "base/timer.h"
 #include "base/win_util.h"
 #include "chrome/browser/drag_utils.h"
 #include "chrome/common/gfx/chrome_canvas.h"
 #include "chrome/common/gfx/color_utils.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/os_exchange_data.h"
 #include "chrome/views/border.h"
 #include "chrome/views/container_win.h"
 #include "chrome/views/root_view.h"
+#include "chrome/views/view_constants.h"
 #include "generated_resources.h"
 
 #undef min
 #undef max
 
 using base::Time;
 using base::TimeDelta;
 
 // Margins between the top of the item and the label.
 static const int kItemTopMargin = 3;
@@ skipping 992 matching lines @@
       // Don't render anything for on.
       return gfx::Rect();
   }
 }
 
 // MenuItemView ---------------------------------------------------------------
 
 //  static
 const int MenuItemView::kMenuItemViewID = 1001;
 
-//  static
-const int MenuItemView::kDropBetweenPixels = 5;
-
 // static
 bool MenuItemView::allow_task_nesting_during_run_ = false;
 
 MenuItemView::MenuItemView(MenuDelegate* delegate) {
   DCHECK(delegate_);
   Init(NULL, 0, SUBMENU, delegate);
 }
 
 MenuItemView::~MenuItemView() {
   if (controller_) {
@@ skipping 833 matching lines @@
   }
   MenuDelegate::DropPosition drop_position = MenuDelegate::DROP_NONE;
   int drop_operation = DragDropTypes::DRAG_NONE;
   if (menu_item) {
     gfx::Point menu_item_loc(event.location());
     View::ConvertPointToView(source, menu_item, &menu_item_loc);
     MenuItemView* query_menu_item;
     if (!over_empty_menu) {
       int menu_item_height = menu_item->height();
       if (menu_item->HasSubmenu() &&
-          (menu_item_loc.y() > MenuItemView::kDropBetweenPixels &&
-           menu_item_loc.y() < (menu_item_height -
-                                MenuItemView::kDropBetweenPixels))) {
+          (menu_item_loc.y() > kDropBetweenPixels &&
+           menu_item_loc.y() < (menu_item_height - kDropBetweenPixels))) {
         drop_position = MenuDelegate::DROP_ON;
       } else if (menu_item_loc.y() < menu_item_height / 2) {
         drop_position = MenuDelegate::DROP_BEFORE;
       } else {
         drop_position = MenuDelegate::DROP_AFTER;
       }
       query_menu_item = menu_item;
     } else {
       query_menu_item = menu_item->GetParentMenuItem();
       drop_position = MenuDelegate::DROP_ON;
@@ skipping 809 matching lines @@
   if (!scroll_task_.get())
     scroll_task_.reset(new MenuScrollTask());
   scroll_task_->Update(part);
 }
 
 void MenuController::StopScrolling() {
   scroll_task_.reset(NULL);
 }
 
 }  // namespace views