ObjectPainter::paintAsStackingContext()

third_party/WebKit/Source/core/paint/ObjectPainter.h

 // 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.
 
 #ifndef ObjectPainter_h
 #define ObjectPainter_h
 
 #include "core/style/ComputedStyleConstants.h"
 #include "wtf/Allocator.h"
 #include "wtf/Vector.h"
@@ skipping 13 matching lines @@
     STACK_ALLOCATED();
 public:
     ObjectPainter(const LayoutObject& layoutObject) : m_layoutObject(layoutObject) { }
 
     void paintOutline(const PaintInfo&, const LayoutPoint& paintOffset);
     void paintInlineChildrenOutlines(const PaintInfo&, const LayoutPoint& paintOffset);
     void addPDFURLRectIfNeeded(const PaintInfo&, const LayoutPoint& paintOffset);
 
     static void drawLineForBoxSide(GraphicsContext&, int x1, int y1, int x2, int y2, BoxSide, Color, EBorderStyle, int adjbw1, int adjbw2, bool antialias = false);
 
+    // Paints all phases atomically if needed as if the element established its own stacking context.
+    // (See Appendix E.2, section 7.2.1.4 on inline block/table/replaced elements in the CSS2.1 specification.)
+    // This is used to paint inline-block elements, flex items, grid items, floats, etc.
+    // It is expected that the caller will call this function independent of the value of paintInfo.phase,
+    // and this function will do atomic paint, normal paint or nothing according to paintInfo.phase.
+    void paintAsStackingContext(const PaintInfo&, const LayoutPoint& paintOffset);

[chrishtr, 2016/01/07 01:51:26]

Similarly: paintAsPseudoStackingContext?

[Xianzhu, 2016/01/07 17:02:40]

Done.

+
 private:
     static void drawDashedOrDottedBoxSide(GraphicsContext&, int x1, int y1, int x2, int y2,
         BoxSide, Color, int thickness, EBorderStyle, bool antialias);
     static void drawDoubleBoxSide(GraphicsContext&, int x1, int y1, int x2, int y2,
         int length, BoxSide, Color, int thickness, int adjacentWidth1, int adjacentWidth2, bool antialias);
     static void drawRidgeOrGrooveBoxSide(GraphicsContext&, int x1, int y1, int x2, int y2,
         BoxSide, Color, EBorderStyle, int adjacentWidth1, int adjacentWidth2, bool antialias);
     static void drawSolidBoxSide(GraphicsContext&, int x1, int y1, int x2, int y2,
         BoxSide, Color, int adjacentWidth1, int adjacentWidth2, bool antialias);
 
     const LayoutObject& m_layoutObject;
 };
 
 } // namespace blink
 
 #endif