remoting/client/plugin/pepper_cursor_setter.h

   1 // Copyright 2014 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 #ifndef REMOTING_CLIENT_PLUGIN_PEPPER_CURSOR_SETTER_H_
   6 #define REMOTING_CLIENT_PLUGIN_PEPPER_CURSOR_SETTER_H_
   7
   8 #include "ppapi/cpp/instance_handle.h"
   9 #include "remoting/protocol/cursor_shape_stub.h"
  10
  11 namespace remoting {
  12
  13 // Helper that applies supplied cursor shapes to the plugin.
  14 class PepperCursorSetter : public protocol::CursorShapeStub {
  15  public:
  16   explicit PepperCursorSetter(const pp::InstanceHandle& instance);
  17   ~PepperCursorSetter() override;
  18
  19   // protocol::CursorShapeStub interface.
  20   void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override;
  21
  22   // Sets a CursorShapeStub to which the cursor will be delegated if it cannot
  23   // be set via PPAPI.
  24   void set_delegate_stub(protocol::CursorShapeStub* delegate_stub) {
  25     delegate_stub_ = delegate_stub;
  26   }
  27
  28   // Maximum width and height of a mouse cursor supported by PPAPI.
  29   static const int kMaxCursorWidth = 32;
  30   static const int kMaxCursorHeight = 32;
  31
  32  private:
  33   // Attempts to set the supplied cursor via PPAPI, returning true on success.
  34   bool SetInstanceCursor(const protocol::CursorShapeInfo& cursor_shape);
  35
  36   pp::InstanceHandle instance_;
  37   protocol::CursorShapeStub* delegate_stub_;
  38
  39   DISALLOW_COPY_AND_ASSIGN(PepperCursorSetter);
  40 };
  41
  42 }  // namespace remoting
  43
  44 #endif  // REMOTING_CLIENT_PLUGIN_PEPPER_CURSOR_SETTER_H_