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

// Copyright 2016 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_GEOMETRY_MAPPER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_GEOMETRY_MAPPER_H_

#include <optional>

#include "third_party/blink/renderer/platform/graphics/overlay_scrollbar_clip_behavior.h"
#include "third_party/blink/renderer/platform/graphics/paint/float_clip_rect.h"
#include "third_party/blink/renderer/platform/graphics/paint/property_tree_state.h"
#include "third_party/blink/renderer/platform/graphics/visual_rect_flags.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "ui/gfx/geometry/rect_f.h"
#include "ui/gfx/geometry/transform.h"

namespace blink {

// GeometryMapper is a helper class for fast computations of transformed and
// visual rects in different PropertyTreeStates. The design document has a
// number of details on use cases, algorithmic definitions, and running times.
//
// NOTE: A GeometryMapper object is only valid for property trees that do not
// change. If any mutation occurs, a new GeometryMapper object must be allocated
// corresponding to the new state.
//
// Design document: http://bit.ly/28P4FDA
class PLATFORM_EXPORT GeometryMapper { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_PAINT_GEOMETRY_MAPPER_H_