Paint flex items atomically, like inline-blocks

Source/core/rendering/RenderBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 3091 matching lines @@
         paintChild(child, paintInfo, paintOffset);
 }
 
 void RenderBlock::paintChild(RenderBox* child, PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     LayoutPoint childPoint = flipForWritingModeForChild(child, paintOffset);
     if (!child->hasSelfPaintingLayer() && !child->isFloating())
         child->paint(paintInfo, childPoint);
 }
 
+void RenderBlock::paintChildAsInlineBlock(RenderBox* child, PaintInfo& paintInfo, const LayoutPoint& paintOffset)
+{
+    LayoutPoint childPoint = flipForWritingModeForChild(child, paintOffset);
+    if (!child->hasSelfPaintingLayer() && !child->isFloating())
+        paintAsInlineBlock(child, paintInfo, childPoint);
+}
+
+void RenderBlock::paintAsInlineBlock(RenderObject* renderer, PaintInfo& paintInfo, const LayoutPoint& childPoint)
+{
+    if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)
+        return;
+
+    // Paint all phases atomically, as though 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 also used by other elements (e.g. flex items and grid items).
+    bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip;
+    PaintInfo info(paintInfo);
+    info.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
+    renderer->paint(info, childPoint);
+    if (!preservePhase) {
+        info.phase = PaintPhaseChildBlockBackgrounds;
+        renderer->paint(info, childPoint);
+        info.phase = PaintPhaseFloat;
+        renderer->paint(info, childPoint);
+        info.phase = PaintPhaseForeground;
+        renderer->paint(info, childPoint);
+        info.phase = PaintPhaseOutline;
+        renderer->paint(info, childPoint);
+    }
+}
+
 bool RenderBlock::hasCaret(CaretType type) const
 {
     // Paint the caret if the FrameSelection says so or if caret browsing is enabled
     bool caretBrowsing = frame()->settings() && frame()->settings()->caretBrowsingEnabled();
     RenderObject* caretPainter;
     bool isContentEditable;
     if (type == CursorCaret) {
         caretPainter = frame()->selection()->caretRenderer();
         isContentEditable = frame()->selection()->rendererIsEditable();
     } else {
@@ skipping 4855 matching lines @@
 void RenderBlock::showLineTreeAndMark(const InlineBox* markedBox1, const char* markedLabel1, const InlineBox* markedBox2, const char* markedLabel2, const RenderObject* obj) const
 {
     showRenderObject();
     for (const RootInlineBox* root = firstRootBox(); root; root = root->nextRootBox())
         root->showLineTreeAndMark(markedBox1, markedLabel1, markedBox2, markedLabel2, obj, 1);
 }
 
 #endif
 
 } // namespace WebCore