Expose GetBaseline() method on RenderText.

ui/gfx/render_text_linux.cc

 // Copyright (c) 2012 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 "ui/gfx/render_text_linux.h"
 
 #include <pango/pangocairo.h>
 #include <algorithm>
 #include <string>
 #include <vector>
@@ skipping 82 matching lines @@
   return base::i18n::LEFT_TO_RIGHT;
 }
 
 Size RenderTextLinux::GetStringSize() {
   EnsureLayout();
   int width = 0, height = 0;
   pango_layout_get_pixel_size(layout_, &width, &height);
   return Size(width, height);
 }
 
+int RenderTextLinux::GetBaseline() {
+  EnsureLayout();
+  return PANGO_PIXELS(pango_layout_get_baseline(layout_));

[msw, 2012/06/22 17:35:38]

Does this need that DIP/Hi-DPI function instead?

[Alexei Svitkine (slow), 2012/06/22 17:54:07]

It doesn't. There's no plan to do subpixel positioning on the y axis.

+}
+
 SelectionModel RenderTextLinux::FindCursorPosition(const Point& point) {
   EnsureLayout();
 
   if (text().empty())
     return SelectionModel(0, CURSOR_FORWARD);
 
   Point p(ToTextPoint(point));
 
   // When the point is outside of text, return HOME/END position.
   if (p.x() < 0)
@@ skipping 431 matching lines @@
   return bounds;
 }
 
 std::vector<Rect> RenderTextLinux::GetSelectionBounds() {
   if (selection_visual_bounds_.empty())
     selection_visual_bounds_ = CalculateSubstringBounds(selection());
   return selection_visual_bounds_;
 }
 
 }  // namespace gfx