// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/paint/svg_root_inline_box_painter.h"

#include "third_party/blink/renderer/core/layout/api/line_layout_api_shim.h"
#include "third_party/blink/renderer/core/layout/svg/line/svg_inline_flow_box.h"
#include "third_party/blink/renderer/core/layout/svg/line/svg_inline_text_box.h"
#include "third_party/blink/renderer/core/layout/svg/line/svg_root_inline_box.h"
#include "third_party/blink/renderer/core/paint/paint_info.h"
#include "third_party/blink/renderer/core/paint/scoped_svg_paint_state.h"
#include "third_party/blink/renderer/core/paint/svg_inline_flow_box_painter.h"
#include "third_party/blink/renderer/core/paint/svg_inline_text_box_painter.h"
#include "third_party/blink/renderer/core/paint/svg_model_object_painter.h"
#include "third_party/blink/renderer/platform/graphics/paint/drawing_recorder.h"

namespace blink {

void SVGRootInlineBoxPainter::Paint(const PaintInfo& paint_info,
                                    const PhysicalOffset& paint_offset) {
  DCHECK(paint_info.phase == PaintPhase::kForeground ||
         paint_info.phase == PaintPhase::kSelectionDragImage);

  const auto& layout_object = *LineLayoutAPIShim::ConstLayoutObjectFrom(
      svg_root_inline_box_.GetLineLayoutItem());
  bool has_selection = !layout_object.GetDocument().Printing() &&
                       svg_root_inline_box_.IsSelected();
  if (has_selection &&
      !DrawingRecorder::UseCachedDrawingIfPossible(
          paint_info.context, layout_object, paint_info.phase)) {
    SVGDrawingRecorder recorder(paint_info.context, layout_object,
                                paint_info.phase);
    for (InlineBox* child = svg_root_inline_box_.FirstChild(); child;
         child = child->NextOnLine()) {
      if (auto* svg_inline_text_box = DynamicTo<SVGInlineTextBox>(child)) {
        SVGInlineTextBoxPainter(*svg_inline_text_box)
            .PaintSelectionBackground(paint_info);
      } else if (auto* svg_inline_flow_box =
                     DynamicTo<SVGInlineFlowBox>(child)) {
        SVGInlineFlowBoxPainter(*svg_inline_flow_box)
            .PaintSelectionBackground(paint_info);
      }
    }
  }

  ScopedSVGPaintState paint_state(layout_object, paint_info);
  for (InlineBox* child = svg_root_inline_box_.FirstChild(); child;
       child = child->NextOnLine())
    child->Paint(paint_info, paint_offset, LayoutUnit(), LayoutUnit());
}

}  // namespace blink