Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/ghost/GHOST_IEvent.hh

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+/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup GHOST
+ * Declaration of GHOST_IEvent interface class.
+ */
+
+#pragma once
+
+#include "GHOST_Types.hh"
+#include <cstddef>
+
+class GHOST_IWindow;
+
+/**
+ * Interface class for events received from GHOST.
+ * You should not need to inherit this class. The system will pass these events
+ * to the #GHOST_IEventConsumer::processEvent() method of event consumers.<br>
+ * Use the #getType() method to retrieve the type of event and the #getData()
+ * method to get the event data out. Using the event type you can cast the
+ * event data to the correct event data structure.
+ * \see GHOST_IEventConsumer#processEvent
+ * \see GHOST_TEventType
+ */
+class GHOST_IEvent {
+ public:
+  /**
+   * Destructor.
+   */
+  virtual ~GHOST_IEvent() = default;
+
+  /**
+   * Returns the event type.
+   * \return The event type.
+   */
+  virtual GHOST_TEventType getType() const = 0;
+
+  /**
+   * Returns the time this event was generated.
+   * \return The event generation time.
+   */
+  virtual uint64_t getTime() const = 0;
+
+  /**
+   * Returns the window this event was generated on,
+   * or nullptr if it is a 'system' event.
+   * \return The generating window.
+   */
+  virtual GHOST_IWindow *getWindow() const = 0;
+
+  /**
+   * Returns the event data.
+   * \return The event data.
+   */
+  virtual GHOST_TEventDataPtr getData() const = 0;
+
+  MEM_CXX_CLASS_ALLOC_FUNCS("GHOST:GHOST_IEvent")
+};