Replace ENABLE_OPENTYPE_VERTICAL implementation with HarfBuzz

Source/platform/fonts/harfbuzz/HarfBuzzFaceCoreText.mm

 /*
  * Copyright (c) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 87 matching lines @@
 
 static hb_position_t getGlyphHorizontalAdvance(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, void* userData)
 {
     CGSize advance;
     FontPlatformData* platformData = reinterpret_cast<FontPlatformData*>(fontData);
     advanceForGlyph(glyph, *platformData, &advance);
     float syntheticBoldOffset = platformData->m_syntheticBold ? 1.0f : 0.0f;
     return floatToHarfBuzzPosition(advance.width + syntheticBoldOffset);
 }
 
+static hb_bool_t harfBuzzGetGlyphVerticalOrigin(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, hb_position_t* x, hb_position_t* y, void* userData)
+{
+    FontPlatformData* fontPlatformData = reinterpret_cast<FontPlatformData*>(fontData);
+
+    OpenTypeVerticalData* verticalData = fontPlatformData->verticalData().get();
+    if (!verticalData)
+        return false;
+
+    // FIXME: This should be using the existing SimpleFontData or SkFontMetrics.
+    RefPtr<SimpleFontData> simpleFontData = SimpleFontData::create(*fontPlatformData);
+    float result[] = { 0, 0 };
+
+    Glyph theGlyph = glyph;
+    verticalData->getVerticalTranslationsForGlyphs(simpleFontData.get(), &theGlyph, 1, result);
+    *x = floatToHarfBuzzPosition(-result[0]);
+    *y = floatToHarfBuzzPosition(-result[1]);
+
+    return true;
+}
+
+static hb_position_t harfBuzzGetGlyphVerticalAdvance(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, void* userData)
+{
+    FontPlatformData* fontPlatformData = reinterpret_cast<FontPlatformData*>(fontData);
+
+    RefPtr<SimpleFontData> simpleFontData = SimpleFontData::create(*fontPlatformData);
+    OpenTypeVerticalData* verticalData = fontPlatformData->verticalData().get();
+
+    if (!verticalData)
+      return floatToHarfBuzzPosition(simpleFontData->fontMetrics().height());
+
+    // FIXME: This should be using the existing SimpleFontData or SkFontMetrics.
+    Glyph theGlyph = glyph;
+    float advanceHeight = verticalData->advanceHeight(simpleFontData.get(), theGlyph);
+
+    return floatToHarfBuzzPosition(advanceHeight);
+}
+
 static hb_bool_t getGlyphHorizontalOrigin(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, hb_position_t* x, hb_position_t* y, void* userData)
 {
     return true;
 }
 
 static hb_bool_t getGlyphExtents(hb_font_t* hbFont, void* fontData, hb_codepoint_t glyph, hb_glyph_extents_t* extents, void* userData)
 {
     CTFontRef ctFont = reinterpret_cast<FontPlatformData*>(fontData)->ctFont();
     CGRect cgRect;
     CGGlyph cgGlyph = glyph;
     if (CTFontGetBoundingRectsForGlyphs(ctFont, kCTFontDefaultOrientation, &cgGlyph, &cgRect, 1) == CGRectNull)
         return false;
     extents->x_bearing = floatToHarfBuzzPosition(cgRect.origin.x);
     extents->y_bearing = -floatToHarfBuzzPosition(cgRect.origin.y);
     extents->width = floatToHarfBuzzPosition(cgRect.size.width);
     extents->height = floatToHarfBuzzPosition(cgRect.size.height);
     return true;
 }
 
 static hb_font_funcs_t* harfBuzzCoreTextGetFontFuncs()
 {
     static hb_font_funcs_t* harfBuzzCoreTextFontFuncs = 0;
 
     if (!harfBuzzCoreTextFontFuncs) {
         harfBuzzCoreTextFontFuncs = hb_font_funcs_create();
         hb_font_funcs_set_glyph_func(harfBuzzCoreTextFontFuncs, getGlyph, 0, 0);
         hb_font_funcs_set_glyph_h_advance_func(harfBuzzCoreTextFontFuncs, getGlyphHorizontalAdvance, 0, 0);
         hb_font_funcs_set_glyph_h_origin_func(harfBuzzCoreTextFontFuncs, getGlyphHorizontalOrigin, 0, 0);
+        hb_font_funcs_set_glyph_v_advance_func(harfBuzzCoreTextFontFuncs, harfBuzzGetGlyphVerticalAdvance, 0, 0);
+        hb_font_funcs_set_glyph_v_origin_func(harfBuzzCoreTextFontFuncs, harfBuzzGetGlyphVerticalOrigin, 0, 0);
         hb_font_funcs_set_glyph_extents_func(harfBuzzCoreTextFontFuncs, getGlyphExtents, 0, 0);
         hb_font_funcs_make_immutable(harfBuzzCoreTextFontFuncs);
     }
     return harfBuzzCoreTextFontFuncs;
 }
 
 hb_face_t* HarfBuzzFace::createFace()
 {
     hb_face_t* face = hb_coretext_face_create(m_platformData->cgFont());
     ASSERT(face);
     return face;
 }
 
 hb_font_t* HarfBuzzFace::createFont()
 {
     hb_font_t* font = hb_font_create(m_face);
     hb_font_set_funcs(font, harfBuzzCoreTextGetFontFuncs(), m_platformData, 0);
     const float size = m_platformData->m_textSize;
     hb_font_set_ppem(font, size, size);
     const int scale = (1 << 16) * static_cast<int>(size);
     hb_font_set_scale(font, scale, scale);
     hb_font_make_immutable(font);
     return font;
 }
 
 } // namespace blink