chromium/third_party/blink/renderer/core/paint/text_decoration_painter.h

// Copyright 2021 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_PAINT_TEXT_DECORATION_PAINTER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_TEXT_DECORATION_PAINTER_H_

#include <optional>

#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/paint/highlight_painter.h"
#include "third_party/blink/renderer/core/paint/text_decoration_info.h"

namespace blink {

class ComputedStyle;
class FragmentItem;
class GraphicsContextStateSaver;
class InlinePaintContext;
class TextPainter;
struct LineRelativeRect;
struct PaintInfo;
struct TextPaintStyle;

// TextFragmentPainter helper that paints text-decoration.
//
// We expose a friendlier interface over TextPainter’s decoration
// primitives that’s harder to misuse. Callers of Begin must then call
// PaintExceptLineThrough and PaintOnlyLineThrough, in exactly that order
// (though other painting code may happen in between).
//
// We clip the canvas to ensure that decorations change exactly at the edge of
// any ::selection background, but paint all decorations along the full logical
// width of |decoration_rect|. This yields better results for wavy lines, since
// they stay perfectly continuous and in phase into any highlighted parts.
class CORE_EXPORT TextDecorationPainter { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_PAINT_TEXT_DECORATION_PAINTER_H_