Move paint code from RenderSVGForeignObject to SVGForeignObjectPainter

Source/core/paint/SVGForeignObjectPainter.cpp

+// 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/SVGForeignObjectPainter.h"
+
+#include "core/paint/BlockPainter.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/svg/RenderSVGForeignObject.h"
+#include "core/rendering/svg/SVGRenderSupport.h"
+#include "core/rendering/svg/SVGRenderingContext.h"
+#include "platform/graphics/GraphicsContextStateSaver.h"
+
+namespace blink {
+
+void SVGForeignObjectPainter::paint(PaintInfo& paintInfo)
+{
+    if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)
+        return;
+
+    PaintInfo childPaintInfo(paintInfo);
+    GraphicsContextStateSaver stateSaver(*childPaintInfo.context);
+    childPaintInfo.applyTransform(m_renderSVGForeignObject.localTransform());
+
+    if (SVGRenderSupport::isOverflowHidden(&m_renderSVGForeignObject))
+        childPaintInfo.context->clip(m_renderSVGForeignObject.viewportRect());
+
+    SVGRenderingContext renderingContext;
+    bool continueRendering = true;
+    if (paintInfo.phase == PaintPhaseForeground) {
+        renderingContext.prepareToRenderSVGContent(&m_renderSVGForeignObject, childPaintInfo);
+        continueRendering = renderingContext.isRenderingPrepared();
+    }
+
+    if (continueRendering) {
+        // Paint all phases of FO elements atomically as though the FO element established its own stacking context.
+        bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip;
+        const LayoutPoint childPoint = IntPoint();
+        childPaintInfo.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
+        BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
+        if (!preservePhase) {
+            childPaintInfo.phase = PaintPhaseChildBlockBackgrounds;
+            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
+            childPaintInfo.phase = PaintPhaseFloat;
+            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
+            childPaintInfo.phase = PaintPhaseForeground;
+            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
+            childPaintInfo.phase = PaintPhaseOutline;
+            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
+        }
+    }
+}
+
+} // namespace blink