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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at
* This file declares data structures used to communicate data logged by
* various components for the purpose of APZ testing (see bug 961289 and
* gfx/layers/apz/test/APZTestData.h) to JS test code.
// A single key-value pair in the data.
dictionary ScrollFrameDataEntry {
DOMString key;
DOMString value;
// All the key-value pairs associated with a given scrollable frame.
// The scrollable frame is identified by a scroll id.
dictionary ScrollFrameData {
unsigned long long scrollId;
sequence<ScrollFrameDataEntry> entries;
// All the scrollable frames associated with a given paint or repaint request.
// The paint or repaint request is identified by a sequence number.
dictionary APZBucket {
unsigned long sequenceNumber;
sequence<ScrollFrameData> scrollFrames;
namespace APZHitResultFlags {
// These constants should be kept in sync with mozilla::gfx::CompositorHitTestInfo
const unsigned short INVISIBLE = 0;
const unsigned short VISIBLE = 0x0001;
const unsigned short IRREGULAR_AREA = 0x0002;
const unsigned short APZ_AWARE_LISTENERS = 0x0004;
const unsigned short INACTIVE_SCROLLFRAME = 0x0008;
const unsigned short PAN_X_DISABLED = 0x0010;
const unsigned short PAN_Y_DISABLED = 0x0020;
const unsigned short PINCH_ZOOM_DISABLED = 0x0040;
const unsigned short DOUBLE_TAP_ZOOM_DISABLED = 0x0080;
const unsigned short SCROLLBAR = 0x0100;
const unsigned short SCROLLBAR_THUMB = 0x0200;
const unsigned short SCROLLBAR_VERTICAL = 0x0400;
const unsigned short REQUIRES_TARGET_CONFIRMATION = 0x0800;
dictionary APZHitResult {
float screenX;
float screenY;
unsigned short hitResult; // combination of the APZHitResultFlags.* flags
unsigned long long layersId;
unsigned long long scrollId;
dictionary APZSampledResult {
float scrollOffsetX;
float scrollOffsetY;
DOMHighResTimeStamp sampledTimeStamp;
unsigned long long layersId;
unsigned long long scrollId;
dictionary AdditionalDataEntry {
DOMString key;
DOMString value;
// All the paints and repaint requests. This is the top-level data structure.
dictionary APZTestData {
sequence<APZBucket> paints;
sequence<APZBucket> repaintRequests;
sequence<APZHitResult> hitResults;
sequence<APZSampledResult> sampledResults;
sequence<AdditionalDataEntry> additionalData;
// A frame uniformity measurement for every scrollable layer
dictionary FrameUniformity {
unsigned long layerAddress;
float frameUniformity;
dictionary FrameUniformityResults {
sequence<FrameUniformity> layerUniformities;