ppapi/c/dev/ppb_cursor_control_dev.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.
 */

/* From dev/ppb_cursor_control_dev.idl modified Fri Nov 18 15:58:00 2011. */

#ifndef PPAPI_C_DEV_PPB_CURSOR_CONTROL_DEV_H_
#define PPAPI_C_DEV_PPB_CURSOR_CONTROL_DEV_H_

#include "ppapi/c/dev/pp_cursor_type_dev.h"
#include "ppapi/c/pp_bool.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_macros.h"
#include "ppapi/c/pp_point.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"

#define PPB_CURSOR_CONTROL_DEV_INTERFACE_0_4 "PPB_CursorControl(Dev);0.4"
#define PPB_CURSOR_CONTROL_DEV_INTERFACE PPB_CURSOR_CONTROL_DEV_INTERFACE_0_4

/**
 * @file
 * This file defines the <code>PPB_CursorControl_Dev</code> interface
 * implemented by the browser for controlling the cursor.
 */


/**
 * @addtogroup Interfaces
 * @{
 */
struct PPB_CursorControl_Dev_0_4 {
  /**
   * Set a cursor.  If "type" is PP_CURSORTYPE_CUSTOM, then "custom_image"
   * must be an ImageData resource containing the cursor and "hot_spot" must
   * contain the offset within that image that refers to the cursor's position.
   */
  PP_Bool (*SetCursor)(PP_Instance instance,
                       enum PP_CursorType_Dev type,
                       PP_Resource custom_image,
                       const struct PP_Point* hot_spot);
  /**
   * This method causes the cursor to be moved to the center of the
   * instance and be locked, preventing the user from moving it.
   * The cursor is implicitly hidden from the user while locked.
   * Cursor lock may only be requested in response to a
   * PP_InputEvent_MouseDown, and then only if the event was generated via
   * user gesture.
   *
   * While the cursor is locked, any movement of the mouse will
   * generate a PP_InputEvent_Type_MouseMove, whose x and y values
   * indicate the position the cursor would have been moved to had
   * the cursor not been locked, and had the screen been infinite in size.
   *
   * The browser may revoke cursor lock for reasons including but not
   * limited to the user pressing the ESC key, the user activating
   * another program via a reserved keystroke (e.g., ALT+TAB), or
   * some other system event.
   *
   * Returns PP_TRUE if the cursor could be locked, PP_FALSE otherwise.
   */
  PP_Bool (*LockCursor)(PP_Instance instance);
  /**
   * Causes the cursor to be unlocked, allowing it to track user
   * movement again.
   */
  PP_Bool (*UnlockCursor)(PP_Instance instance);
  /**
   * Returns PP_TRUE if the cursor is locked, PP_FALSE otherwise.
   */
  PP_Bool (*HasCursorLock)(PP_Instance instance);
  /**
   * Returns PP_TRUE if the cursor can be locked, PP_FALSE otherwise.
   */
  PP_Bool (*CanLockCursor)(PP_Instance instance);
};

typedef struct PPB_CursorControl_Dev_0_4 PPB_CursorControl_Dev;
/**
 * @}
 */

#endif  /* PPAPI_C_DEV_PPB_CURSOR_CONTROL_DEV_H_ */