chromium/third_party/blink/renderer/platform/graphics/paint/transform_paint_property_node.h

// Copyright 2015 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_PLATFORM_GRAPHICS_PAINT_TRANSFORM_PAINT_PROPERTY_NODE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_TRANSFORM_PAINT_PROPERTY_NODE_H_

#include <algorithm>

#include "base/check_op.h"
#include "base/dcheck_is_on.h"
#include "cc/trees/sticky_position_constraint.h"
#include "third_party/blink/renderer/platform/graphics/compositing_reasons.h"
#include "third_party/blink/renderer/platform/graphics/compositor_element_id.h"
#include "third_party/blink/renderer/platform/graphics/paint/geometry_mapper_clip_cache.h"
#include "third_party/blink/renderer/platform/graphics/paint/geometry_mapper_transform_cache.h"
#include "third_party/blink/renderer/platform/graphics/paint/paint_property_node.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "ui/gfx/geometry/point3_f.h"
#include "ui/gfx/geometry/transform.h"

namespace blink {

class ScrollPaintPropertyNode;
CompositorStickyConstraint;

// A transform (e.g., created by css "transform" or "perspective", or for
// internal positioning such as paint offset or scrolling) along with a
// reference to the parent TransformPaintPropertyNode. The scroll tree is
// referenced by transform nodes and a transform node with an associated scroll
// node will be a 2d transform for scroll offset.
//
// The transform tree is rooted at a node with no parent. This root node should
// not be modified.
class TransformPaintPropertyNode;

class PLATFORM_EXPORT TransformPaintPropertyNodeOrAlias
    : public PaintPropertyNodeBase<TransformPaintPropertyNodeOrAlias,
                                   TransformPaintPropertyNode> { … };

class TransformPaintPropertyNodeAlias final
    : public TransformPaintPropertyNodeOrAlias { … };

class PLATFORM_EXPORT TransformPaintPropertyNode final
    : public TransformPaintPropertyNodeOrAlias { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_TRANSFORM_PAINT_PROPERTY_NODE_H_