/* 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.
 */

/* This file contains PPB_PDF interface. */

label Chrome {
  M19 = 0.1
};

enum PP_PDFFeature {
  PP_PDFFEATURE_HIDPI = 0,
  PP_PDFFEATURE_PRINTING = 1
};

struct PP_PrivateFontFileDescription {
  str_t face;
  uint32_t weight;
  PP_Bool italic;
};

struct PP_PrivateFindResult {
  int32_t start_index;
  int32_t length;
};

struct PP_PrivateAccessibilityViewportInfo {
  double_t zoom;
  PP_Point scroll;
  PP_Point offset;
};

struct PP_PrivateAccessibilityDocInfo {
  uint32_t page_count;
  PP_Bool text_accessible;
  PP_Bool text_copyable;
};

enum PP_PrivateDirection {
  PP_PRIVATEDIRECTION_NONE = 0,
  PP_PRIVATEDIRECTION_LTR = 1,
  PP_PRIVATEDIRECTION_RTL = 2,
  PP_PRIVATEDIRECTION_TTB = 3,
  PP_PRIVATEDIRECTION_BTT = 4,
  PP_PRIVATEDIRECTION_LAST = PP_PRIVATEDIRECTION_BTT
};

struct PP_PrivateAccessibilityPageInfo {
  uint32_t page_index;
  PP_Rect bounds;
  uint32_t text_run_count;
  uint32_t char_count;
};

struct PP_PrivateAccessibilityTextRunInfo {
  uint32_t len;
  double_t font_size;
  PP_FloatRect bounds;
  PP_PrivateDirection direction;
};

struct PP_PrivateAccessibilityCharInfo {
  uint32_t unicode_character;
  double_t char_width;
};

interface PPB_PDF {
  /* Returns a resource identifying a font file corresponding to the given font
   * request after applying the browser-specific fallback.
   *
   * Currently Linux-only.
   */
  PP_Resource GetFontFileWithFallback(
      [in] PP_Instance instance,
      [in] PP_BrowserFont_Trusted_Description description,
      [in] PP_PrivateFontCharset charset);

  /* Given a resource previously returned by GetFontFileWithFallback, returns
   * a pointer to the requested font table. Linux only.
   */
  PP_Bool GetFontTableForPrivateFontFile(
      [in] PP_Resource font_file,
      [in] uint32_t table,
      [out] mem_t output,
      [out] uint32_t output_length);

  /* Search the given string using ICU.  Use PPB_Core's MemFree on results when
   * done.
   */
  void SearchString(
      [in] PP_Instance instance,
      [in] mem_t str,
      [in] mem_t term,
      [in] PP_Bool case_sensitive,
      [out, size_is(count)] PP_PrivateFindResult[] results,
      [out] int32_t count);

  /* Since WebFrame doesn't know about PPAPI requests, it'll think the page has
   * finished loading even if there are outstanding requests by the plugin.
   * Take this out once WebFrame knows about requests by PPAPI plugins.
   */
  void DidStartLoading(
      [in] PP_Instance instance);
  void DidStopLoading(
      [in] PP_Instance instance);

  /* Sets content restriction for a full-page plugin (i.e. can't copy/print).
   * The value is a bitfield of ContentRestriction enums.
   */
  void SetContentRestriction(
      [in] PP_Instance instance,
      [in] int32_t restrictions);

  /* Notifies the browser that the given action has been performed. */
  void UserMetricsRecordAction(
      [in] PP_Instance instance,
      [in] PP_Var action);

  /* Notifies the browser that the PDF has an unsupported feature. */
  void HasUnsupportedFeature(
      [in] PP_Instance instance);

  /*Invoke SaveAs... dialog, similar to the right-click or wrench menu. */
  void SaveAs(
      [in] PP_Instance instance);

  /* Invoke Print dialog for plugin. */
  void Print(
      [in] PP_Instance instance);

  PP_Bool IsFeatureEnabled(
      [in] PP_Instance instance,
      [in] PP_PDFFeature feature);

  /* Sets the selected text of the plugin. If |selected_text| is empty, then no
   * text is selected. */
  void SetSelectedText(
      [in] PP_Instance instance,
      [in] str_t selected_text);

  /* Sets the link under the cursor. If |url| is empty, then no link is under
   * the cursor. */
  void SetLinkUnderCursor(
      [in] PP_Instance instance,
      [in] str_t url);

  /* Gets pointers to both the mmap'd V8 snapshot files and their sizes.
   * This is needed when loading V8's initial snapshot from external files. */
  void GetV8ExternalSnapshotData(
      [in] PP_Instance instance,
      [out] mem_ptr_t natives_data_out,
      [out] int32_t natives_size_out,
      [out] mem_ptr_t snapshot_data_out,
      [out] int32_t snapshot_size_out);

  /* Sends information about the viewport to the renderer for accessibility
   * support. */
  void SetAccessibilityViewportInfo(
      [in] PP_Instance instance,
      [in] PP_PrivateAccessibilityViewportInfo viewport_info);

  /* Sends information about the PDF document to the renderer for accessibility
   * support. */
  void SetAccessibilityDocInfo(
      [in] PP_Instance instance,
      [in] PP_PrivateAccessibilityDocInfo doc_info);

  /* Sends information about one page in a PDF document to the renderer for
   * accessibility support. */
  void SetAccessibilityPageInfo(
      [in] PP_Instance instance,
      [in] PP_PrivateAccessibilityPageInfo page_info,
      [in] PP_PrivateAccessibilityTextRunInfo[] text_runs,
      [in] PP_PrivateAccessibilityCharInfo[] chars);

  /* Sends information about the PDF's URL and the embedder's URL. */
  void SetCrashData(
      [in] PP_Instance instance,
      [in] str_t pdf_url,
      [in] str_t top_level_url);
};