[Line Layout API] Convert SVGTextLayoutEngine and SVGTextLayoutEngineBaseline to line Layout API

third_party/WebKit/Source/core/layout/svg/SVGTextLayoutEngineBaseline.cpp

 /*
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 35 matching lines @@
     case BS_SUB:
         return -m_font.fontMetrics().floatHeight() / 2 / m_effectiveZoom;
     case BS_SUPER:
         return m_font.fontMetrics().floatHeight() / 2 / m_effectiveZoom;
     default:
         ASSERT_NOT_REACHED();
         return 0;
     }
 }
 
-EAlignmentBaseline SVGTextLayoutEngineBaseline::dominantBaselineToAlignmentBaseline(bool isVerticalText, const LayoutObject* textLayoutObject) const
+EAlignmentBaseline SVGTextLayoutEngineBaseline::dominantBaselineToAlignmentBaseline(bool isVerticalText, LineLayoutItem textLineLayout) const
 {
-    ASSERT(textLayoutObject);
-    ASSERT(textLayoutObject->style());
+    ASSERT(textLineLayout);
+    ASSERT(textLineLayout.style());
 
-    const SVGComputedStyle& style = textLayoutObject->style()->svgStyle();
+    const SVGComputedStyle& style = textLineLayout.style()->svgStyle();
 
     EDominantBaseline baseline = style.dominantBaseline();
     if (baseline == DB_AUTO) {
         if (isVerticalText)
             baseline = DB_CENTRAL;
         else
             baseline = DB_ALPHABETIC;
     }
 
     switch (baseline) {
     case DB_USE_SCRIPT:
         // TODO(fs): The dominant-baseline and the baseline-table components
         // are set by determining the predominant script of the character data
         // content.
         return AB_ALPHABETIC;
     case DB_NO_CHANGE:
-        ASSERT(textLayoutObject->parent());
-        return dominantBaselineToAlignmentBaseline(isVerticalText, textLayoutObject->parent());
+        ASSERT(textLineLayout.parent());
+        return dominantBaselineToAlignmentBaseline(isVerticalText, textLineLayout.parent());
     case DB_RESET_SIZE:
-        ASSERT(textLayoutObject->parent());
-        return dominantBaselineToAlignmentBaseline(isVerticalText, textLayoutObject->parent());
+        ASSERT(textLineLayout.parent());
+        return dominantBaselineToAlignmentBaseline(isVerticalText, textLineLayout.parent());
     case DB_IDEOGRAPHIC:
         return AB_IDEOGRAPHIC;
     case DB_ALPHABETIC:
         return AB_ALPHABETIC;
     case DB_HANGING:
         return AB_HANGING;
     case DB_MATHEMATICAL:
         return AB_MATHEMATICAL;
     case DB_CENTRAL:
         return AB_CENTRAL;
     case DB_MIDDLE:
         return AB_MIDDLE;
     case DB_TEXT_AFTER_EDGE:
         return AB_TEXT_AFTER_EDGE;
     case DB_TEXT_BEFORE_EDGE:
         return AB_TEXT_BEFORE_EDGE;
     default:
         ASSERT_NOT_REACHED();
         return AB_AUTO;
     }
 }
 
-float SVGTextLayoutEngineBaseline::calculateAlignmentBaselineShift(bool isVerticalText, const LayoutObject* textLayoutObject) const
+float SVGTextLayoutEngineBaseline::calculateAlignmentBaselineShift(bool isVerticalText, LineLayoutItem textLineLayout) const
 {
-    ASSERT(textLayoutObject);
-    ASSERT(textLayoutObject->style());
-    ASSERT(textLayoutObject->parent());
+    ASSERT(textLineLayout);
+    ASSERT(textLineLayout.style());
+    ASSERT(textLineLayout.parent());
 
-    const LayoutObject* textLayoutObjectParent = textLayoutObject->parent();
-    ASSERT(textLayoutObjectParent);
+    LineLayoutItem textLineLayoutParent = textLineLayout.parent();
+    ASSERT(textLineLayoutParent);
 
-    EAlignmentBaseline baseline = textLayoutObject->style()->svgStyle().alignmentBaseline();
+    EAlignmentBaseline baseline = textLineLayout.style()->svgStyle().alignmentBaseline();
     if (baseline == AB_AUTO || baseline == AB_BASELINE) {
-        baseline = dominantBaselineToAlignmentBaseline(isVerticalText, textLayoutObjectParent);
+        baseline = dominantBaselineToAlignmentBaseline(isVerticalText, textLineLayoutParent);
         ASSERT(baseline != AB_AUTO && baseline != AB_BASELINE);
     }
 
     const FontMetrics& fontMetrics = m_font.fontMetrics();
     float ascent = fontMetrics.floatAscent() / m_effectiveZoom;
     float descent = fontMetrics.floatDescent() / m_effectiveZoom;
     float xheight = fontMetrics.xHeight() / m_effectiveZoom;
 
     // Note: http://wiki.apache.org/xmlgraphics-fop/LineLayout/AlignmentHandling
     switch (baseline) {
@@ skipping 15 matching lines @@
     case AB_MATHEMATICAL:
         return ascent / 2;
     case AB_BASELINE:
     default:
         ASSERT_NOT_REACHED();
         return 0;
     }
 }
 
 }