[LayoutNG] Paint inlines from the fragment tree

third_party/WebKit/Source/core/paint/NGBlockFlowPainter.cpp

+// Copyright 2017 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 "core/paint/NGBlockFlowPainter.h"
+
+#include "core/layout/ng/layout_ng_block_flow.h"
+#include "core/layout/ng/ng_physical_box_fragment.h"
+#include "core/paint/NGBoxFragmentPainter.h"
+#include "core/paint/PaintInfo.h"
+#include "platform/RuntimeEnabledFeatures.h"
+
+namespace blink {
+
+void NGBlockFlowPainter::PaintContents(const PaintInfo& paint_info,
+                                       const LayoutPoint& paint_offset) {
+  const NGPhysicalFragment* fragment = layout_ng_block_flow_.RootFragment();
+  DCHECK(fragment);
+
+  if (fragment && fragment->Type() == NGPhysicalBoxFragment::kFragmentBox) {
+    const NGPhysicalBoxFragment* box_fragment =
+        ToNGPhysicalBoxFragment(fragment);
+    PaintNGBox(box_fragment, paint_info, paint_offset);
+  }
+}
+
+void NGBlockFlowPainter::PaintNGBox(const NGPhysicalBoxFragment* fragment,
+                                    const PaintInfo& paint_info,
+                                    const LayoutPoint& paint_offset) {
+  PaintInfo ng_paint_info(paint_info);
+
+  LayoutRect overflow_rect(layout_ng_block_flow_.VisualOverflowRect());
+  overflow_rect.MoveBy(paint_offset);
+
+  NGBoxFragmentPainter box_painter(fragment);
+
+  if (paint_info.phase == kPaintPhaseForeground) {
+    box_painter.PaintBoxDecorationBackground(ng_paint_info, paint_offset);
+  }
+
+  box_painter.Paint(ng_paint_info, paint_offset);
+}
+
+}  // namespace blink