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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_layers_TestWRScrollData_h
#define mozilla_layers_TestWRScrollData_h
#include "mozilla/gfx/MatrixFwd.h"
#include "mozilla/layers/WebRenderScrollData.h"
namespace mozilla {
namespace layers {
class APZUpdater;
// Extends WebRenderScrollData with some methods useful for gtests.
class TestWRScrollData : public WebRenderScrollData {
public:
TestWRScrollData() = default;
TestWRScrollData(TestWRScrollData&& aOther) = default;
TestWRScrollData& operator=(TestWRScrollData&& aOther) = default;
/*
* Create a WebRenderLayerScrollData tree described by |aTreeShape|.
* |aTreeShape| is expected to be a string where each character is
* either 'x' to indicate a node in the tree, or a '(' or ')' to indicate
* the start/end of a subtree.
*
* Example "x(x(x(xx)x))" would yield:
* x
* |
* x
* / \
* x x
* / \
* x x
*
* The caller may optionally provide visible regions and/or transforms
* for the nodes. If provided, the array should contain one element
* for each node, in the same order as in |aTreeShape|.
*/
static TestWRScrollData Create(
const char* aTreeShape, const APZUpdater& aUpdater,
const LayerIntRegion* aVisibleRegions = nullptr,
const gfx::Matrix4x4* aTransforms = nullptr);
// These methods allow accessing and manipulating layers based on an index
// representing the order in which they appear in |aTreeShape|.
WebRenderLayerScrollData* operator[](size_t aLayerIndex);
const WebRenderLayerScrollData* operator[](size_t aLayerIndex) const;
void SetScrollMetadata(size_t aLayerIndex,
const nsTArray<ScrollMetadata>& aMetadata);
private:
std::map<size_t, size_t> mIndexMap; // Used to implement GetLayer()
};
} // namespace layers
} // namespace mozilla
#endif
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