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ui/gfx/text_elider.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.
 //
 // This file implements utility functions for eliding and formatting UI text.
 //
 // Note that several of the functions declared in text_elider.h are implemented
 // in this file using helper classes in an unnamed namespace.
 
 #include "ui/gfx/text_elider.h"
@@ skipping 182 matching lines @@
 }
 
 base::string16 ElideText(const base::string16& text,
                          const FontList& font_list,
                          float available_pixel_width,
                          ElideBehavior behavior) {
 #if !defined(OS_ANDROID) && !defined(OS_IOS)
   DCHECK_NE(behavior, FADE_TAIL);
   scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
   render_text->SetCursorEnabled(false);
+  // TODO(bshe): 5000 is out dated. We should remove it. See crbug.com/551660.
   // Do not bother accurately sizing strings over 5000 characters here, for
   // performance purposes. This matches the behavior of Canvas::SizeStringFloat.
   render_text->set_truncate_length(5000);
   render_text->SetFontList(font_list);
   available_pixel_width = std::ceil(available_pixel_width);
   render_text->SetDisplayRect(
       gfx::ToEnclosingRect(gfx::RectF(gfx::SizeF(available_pixel_width, 1))));
   render_text->SetElideBehavior(behavior);
   render_text->SetText(text);
   return render_text->GetDisplayText();
@@ skipping 598 matching lines @@
   // of, and we can fit at least one character of the word in the elided string.
   // Do that rather than just returning an ellipsis.
   if (word_break && (index != static_cast<int32_t>(length - 1)))
     return string.substr(0, length - 1) + kElideString;
 
   // Trying to break after only whitespace, elide all of it.
   return kElideString;
 }
 
 }  // namespace gfx