Fixup a bug about SVG text selection.

Source/core/layout/svg/LayoutSVGInlineText.cpp

Index: Source/core/layout/svg/LayoutSVGInlineText.cpp
diff --git a/Source/core/layout/svg/LayoutSVGInlineText.cpp b/Source/core/layout/svg/LayoutSVGInlineText.cpp
index 69553b53f7abf9be827f39d611b7d3ff8fb6bca5..a8bb95ee11e954e1435e6663a6b3507900ff0bb7 100644
--- a/Source/core/layout/svg/LayoutSVGInlineText.cpp
+++ b/Source/core/layout/svg/LayoutSVGInlineText.cpp
@@ -59,6 +59,14 @@ static PassRefPtr<StringImpl> applySVGWhitespaceRules(PassRefPtr<StringImpl> str
     return newString.release();
 }
 
+static float squaredDistanceToClosestPoint(const FloatRect& rect, const FloatPoint& point)
+{
+    FloatPoint closestPoint;
+    closestPoint.setX(std::max(std::min(point.x(), rect.maxX()), rect.x()));
+    closestPoint.setY(std::max(std::min(point.y(), rect.maxY()), rect.y()));
+    return (point - closestPoint).diagonalLengthSquared();
+}
+
 LayoutSVGInlineText::LayoutSVGInlineText(Node* n, PassRefPtr<StringImpl> string)
     : LayoutText(n, applySVGWhitespaceRules(string, false))
     , m_scalingFactor(1)
@@ -184,10 +192,12 @@ PositionWithAffinity LayoutSVGInlineText::positionForPoint(const LayoutPoint& po
             fragment.buildFragmentTransform(fragmentTransform);
             fragmentRect = fragmentTransform.mapRect(fragmentRect);
 
-            float distance = powf(fragmentRect.x() - absolutePoint.x(), 2) +
-                powf(fragmentRect.y() + fragmentRect.height() / 2 - absolutePoint.y(), 2);
+            float distance = 0;
+            if (!fragmentRect.contains(absolutePoint)) {
+                distance = squaredDistanceToClosestPoint(fragmentRect, absolutePoint);
+            }

[fs, 2015/04/28 08:57:03]

Drop the {}

 
-            if (distance < closestDistance) {
+            if (distance <= closestDistance) {
                 closestDistance = distance;
                 closestDistanceBox = textBox;
                 closestDistanceFragment = &fragment;