Move painting code from RenderLineBoxList to LineBoxListPainter.

Source/core/paint/LineBoxListPainter.cpp

Index: Source/core/paint/LineBoxListPainter.cpp
diff --git a/Source/core/paint/LineBoxListPainter.cpp b/Source/core/paint/LineBoxListPainter.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d440a4535a10c0d1fbe4cfc602a354c1faaa8ca8
--- /dev/null
+++ b/Source/core/paint/LineBoxListPainter.cpp
@@ -0,0 +1,58 @@
+// 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 "config.h"
+#include "core/paint/LineBoxListPainter.h"
+
+#include "core/paint/InlinePainter.h"
+#include "core/rendering/InlineFlowBox.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/RenderBoxModelObject.h"
+#include "core/rendering/RenderLineBoxList.h"
+#include "core/rendering/RootInlineBox.h"
+
+namespace blink {
+
+void LineBoxListPainter::paint(RenderBoxModelObject* renderer, PaintInfo& paintInfo, const LayoutPoint& paintOffset) const
+{
+    // Only paint during the foreground/selection phases.
+    if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseOutline
+        && paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines && paintInfo.phase != PaintPhaseTextClip
+        && paintInfo.phase != PaintPhaseMask)
+        return;
+
+    ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could paint like this is if it has a layer.
+
+    // If we have no lines then we have no work to do.
+    if (!m_renderLineBoxList.firstLineBox())
+        return;
+
+    if (!m_renderLineBoxList.anyLineIntersectsRect(renderer, paintInfo.rect, paintOffset))
+        return;
+
+    PaintInfo info(paintInfo);
+    ListHashSet<RenderInline*> outlineObjects;
+    info.setOutlineObjects(&outlineObjects);
+
+    // See if our root lines intersect with the dirty rect. If so, then we paint
+    // them. Note that boxes can easily overlap, so we can't make any assumptions
+    // based off positions of our first line box or our last line box.
+    for (InlineFlowBox* curr = m_renderLineBoxList.firstLineBox(); curr; curr = curr->nextLineBox()) {
+        if (m_renderLineBoxList.lineIntersectsDirtyRect(renderer, curr, info, paintOffset)) {
+            RootInlineBox& root = curr->root();
+            curr->paint(info, paintOffset, root.lineTop(), root.lineBottom());
+        }
+    }
+
+    if (info.phase == PaintPhaseOutline || info.phase == PaintPhaseSelfOutline || info.phase == PaintPhaseChildOutlines) {
+        ListHashSet<RenderInline*>::iterator end = info.outlineObjects()->end();
+        for (ListHashSet<RenderInline*>::iterator it = info.outlineObjects()->begin(); it != end; ++it) {
+            RenderInline* flow = *it;
+            InlinePainter(*flow).paintOutline(info, paintOffset);
+        }
+        info.outlineObjects()->clear();
+    }
+}
+
+} // namespace blink