Drag-and-drop: DragEnter, DragOver, DragLeave, DragDrop

content/renderer/render_widget.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <map>
 #include <memory>
 #include <queue>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "content/common/cursors/webcursor.h"
 #include "content/common/drag_event_source_info.h"
 #include "content/common/edit_command.h"
 #include "content/common/input/synthetic_gesture_params.h"
+#include "content/public/common/drop_data.h"
 #include "content/public/common/screen_info.h"
 #include "content/renderer/devtools/render_widget_screen_metrics_emulator_delegate.h"
 #include "content/renderer/gpu/render_widget_compositor_delegate.h"
 #include "content/renderer/input/render_widget_input_handler.h"
 #include "content/renderer/input/render_widget_input_handler_delegate.h"
 #include "content/renderer/message_delivery_policy.h"
 #include "content/renderer/mouse_lock_dispatcher.h"
 #include "content/renderer/render_widget_mouse_lock_dispatcher.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
@@ skipping 366 matching lines @@
   // TODO(ekaramad): The reference to the focused pepper plugin will be removed
   // from RenderWidget. The purpose of having the reference here was to make IME
   // work for OOPIF (https://crbug.com/643727).
   void set_focused_pepper_plugin(PepperPluginInstanceImpl* plugin) {
     focused_pepper_plugin_ = plugin;
   }
 
   // When emulated, this returns original device scale factor.
   float GetOriginalDeviceScaleFactor() const;
 
+  // Helper to convert |point| using ConvertWindowToViewport().
+  gfx::Point ConvertWindowPointToViewport(const gfx::Point& point);
+
  protected:
   // Friend RefCounted so that the dtor can be non-public. Using this class
   // without ref-counting is an error.
   friend class base::RefCounted<RenderWidget>;
 
   // For unit tests.
   friend class RenderWidgetTest;
 
   using CreateWidgetCallback = base::OnceCallback<bool()>;
 
@@ skipping 82 matching lines @@
   virtual void OnDeviceScaleFactorChanged();
 
   void OnRepaint(gfx::Size size_to_paint);
   void OnSyntheticGestureCompleted();
   void OnSetTextDirection(blink::WebTextDirection direction);
   void OnGetFPS();
   void OnUpdateScreenRects(const gfx::Rect& view_screen_rect,
                            const gfx::Rect& window_screen_rect);
   void OnUpdateWindowScreenRect(const gfx::Rect& window_screen_rect);
   void OnHandleCompositorProto(const std::vector<uint8_t>& proto);
+  // Real data that is dragged is not included at DragEnter time.
+  void OnDragTargetDragEnter(
+      const std::vector<DropData::Metadata>& drop_meta_data,
+      const gfx::Point& client_pt,
+      const gfx::Point& screen_pt,
+      blink::WebDragOperationsMask operations_allowed,
+      int key_modifiers);
+  void OnDragTargetDragOver(const gfx::Point& client_pt,
+                            const gfx::Point& screen_pt,
+                            blink::WebDragOperationsMask operations_allowed,
+                            int key_modifiers);
+  void OnDragTargetDragLeave();
+  void OnDragTargetDrop(const DropData& drop_data,
+                        const gfx::Point& client_pt,
+                        const gfx::Point& screen_pt,
+                        int key_modifiers);
 
 #if defined(OS_ANDROID)
   // Called when we send IME event that expects an ACK.
   void OnImeEventSentForAck(const blink::WebTextInputInfo& info);
 
   // Called by the browser process for every required IME acknowledgement.
   void OnImeEventAck();
 
   // Called by the browser process to update text input state.
   void OnRequestTextInputStateUpdate();
@@ skipping 307 matching lines @@
   // being handled. If the current event results in starting a drag/drop
   // session, this info is sent to the browser along with other drag/drop info.
   DragEventSourceInfo possible_drag_event_info_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_