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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // IPC messages for drag and drop.
      6 // Multiply-included message file, hence no include guard.
      7 
      8 #include "content/common/drag_event_source_info.h"
      9 #include "content/public/common/common_param_traits.h"
     10 #include "content/public/common/drop_data.h"
     11 #include "ipc/ipc_message_macros.h"
     12 #include "third_party/skia/include/core/SkBitmap.h"
     13 #include "third_party/WebKit/public/web/WebDragOperation.h"
     14 #include "ui/gfx/point.h"
     15 #include "ui/gfx/vector2d.h"
     16 
     17 #define IPC_MESSAGE_START DragMsgStart
     18 
     19 // Messages sent from the browser to the renderer.
     20 
     21 IPC_MESSAGE_ROUTED5(DragMsg_TargetDragEnter,
     22                     content::DropData /* drop_data */,
     23                     gfx::Point /* client_pt */,
     24                     gfx::Point /* screen_pt */,
     25                     WebKit::WebDragOperationsMask /* ops_allowed */,
     26                     int /* key_modifiers */)
     27 
     28 IPC_MESSAGE_ROUTED4(DragMsg_TargetDragOver,
     29                     gfx::Point /* client_pt */,
     30                     gfx::Point /* screen_pt */,
     31                     WebKit::WebDragOperationsMask /* ops_allowed */,
     32                     int /* key_modifiers */)
     33 
     34 IPC_MESSAGE_ROUTED0(DragMsg_TargetDragLeave)
     35 
     36 IPC_MESSAGE_ROUTED3(DragMsg_TargetDrop,
     37                     gfx::Point /* client_pt */,
     38                     gfx::Point /* screen_pt */,
     39                     int /* key_modifiers */)
     40 
     41 // Notifies the renderer of updates in mouse position of an in-progress
     42 // drag.  if |ended| is true, then the user has ended the drag operation.
     43 IPC_MESSAGE_ROUTED4(DragMsg_SourceEndedOrMoved,
     44                     gfx::Point /* client_pt */,
     45                     gfx::Point /* screen_pt */,
     46                     bool /* ended */,
     47                     WebKit::WebDragOperation /* drag_operation */)
     48 
     49 // Notifies the renderer that the system DoDragDrop call has ended.
     50 IPC_MESSAGE_ROUTED0(DragMsg_SourceSystemDragEnded)
     51 
     52 // Messages sent from the renderer to the browser.
     53 
     54 // Used to tell the parent the user started dragging in the content area. The
     55 // DropData struct contains contextual information about the pieces of the
     56 // page the user dragged. The parent uses this notification to initiate a
     57 // drag session at the OS level.
     58 IPC_MESSAGE_ROUTED5(DragHostMsg_StartDragging,
     59                     content::DropData /* drop_data */,
     60                     WebKit::WebDragOperationsMask /* ops_allowed */,
     61                     SkBitmap /* image */,
     62                     gfx::Vector2d /* image_offset */,
     63                     content::DragEventSourceInfo /* event_info */)
     64 
     65 // The page wants to update the mouse cursor during a drag & drop operation.
     66 // |is_drop_target| is true if the mouse is over a valid drop target.
     67 IPC_MESSAGE_ROUTED1(DragHostMsg_UpdateDragCursor,
     68                     WebKit::WebDragOperation /* drag_operation */)
     69 
     70 // Notifies the host that the renderer finished a drop operation.
     71 IPC_MESSAGE_ROUTED0(DragHostMsg_TargetDrop_ACK)
     72