ppapi/api/ppb_instance.idl

   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
   6 /**
   7  * This file defines the <code>PPB_Instance</code> interface implemented by the
   8  * browser and containing pointers to functions related to
   9  * the module instance on a web page.
  10  */
  11
  12 [generate_thunk]
  13
  14 label Chrome {
  15   M14 = 1.0
  16  };
  17
  18 /**
  19  * The PPB_Instance interface contains pointers to functions
  20  * related to the module instance on a web page.
  21  */
  22 interface PPB_Instance {
  23   /**
  24    * BindGraphics() binds the given graphics as the current display surface.
  25    * The contents of this device is what will be displayed in the instance's
  26    * area on the web page. The device must be a 2D or a 3D device.
  27    *
  28    * You can pass a <code>NULL</code> resource as the device parameter to
  29    * unbind all devices from the given instance. The instance will then appear
  30    * transparent. Re-binding the same device will return <code>PP_TRUE</code>
  31    * and will do nothing.
  32    *
  33    * Any previously-bound device will be released. It is an error to bind
  34    * a device when it is already bound to another instance. If you want
  35    * to move a device between instances, first unbind it from the old one, and
  36    * then rebind it to the new one.
  37    *
  38    * Binding a device will invalidate that portion of the web page to flush the
  39    * contents of the new device to the screen.
  40    *
  41    * @param[in] instance A PP_Instance identifying one instance of a module.
  42    * @param[in] device A PP_Resource corresponding to a graphics device.
  43    *
  44    * @return <code>PP_Bool</code> containing <code>PP_TRUE</code> if bind was
  45    * successful or <code>PP_FALSE</code> if the device was not the correct
  46    * type. On success, a reference to the device will be held by the
  47    * instance, so the caller can release its reference if it chooses.
  48    */
  49   PP_Bool BindGraphics(
  50       [in] PP_Instance instance,
  51       [in] PP_Resource device);
  52
  53   /**
  54    * IsFullFrame() determines if the instance is full-frame. Such an instance
  55    * represents the entire document in a frame rather than an embedded
  56    * resource. This can happen if the user does a top-level navigation or the
  57    * page specifies an iframe to a resource with a MIME type registered by the
  58    * module.
  59    *
  60    * @param[in] instance A <code>PP_Instance</code> identifying one instance
  61    * of a module.
  62    *
  63    * @return A <code>PP_Bool</code> containing <code>PP_TRUE</code> if the
  64    * instance is full-frame.
  65    */
  66   PP_Bool IsFullFrame(
  67       [in] PP_Instance instance);
  68 };
  69