chromium/third_party/blink/renderer/core/css/cssom/css_paint_worklet_input.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_PAINT_WORKLET_INPUT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_PAINT_WORKLET_INPUT_H_

#include <memory>
#include <utility>

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/cssom/paint_worklet_input.h"
#include "third_party/blink/renderer/core/css/cssom/paint_worklet_style_property_map.h"
#include "third_party/blink/renderer/platform/graphics/compositor_element_id.h"

namespace blink {

// CSSPaintWorkletInput encapsulates the necessary information to run a CSS
// Paint instance (a 'PaintWorklet') for a given target (e.g. the
// 'background-image' property of a particular element). It is used to enable
// Off-Thread PaintWorklet, allowing us to defer the actual JavaScript calls
// until the cc-Raster phase (and even then run the JavaScript on a separate
// worklet thread).
//
// TODO: WTF::Strings are now thread-safe. Consider refactoring this code.
class CORE_EXPORT CSSPaintWorkletInput : public PaintWorkletInput { … };

template <>
struct DowncastTraits<CSSPaintWorkletInput> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSSOM_CSS_PAINT_WORKLET_INPUT_H_