Prepare to use gfx::RenderText in views::Label.

ui/gfx/render_text.h

 // 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.
 
 #ifndef UI_GFX_RENDER_TEXT_H_
 #define UI_GFX_RENDER_TEXT_H_
 
 #include <algorithm>
 #include <cstring>
 #include <string>
@@ skipping 223 matching lines @@
   bool obscured() const { return obscured_; }
   void SetObscured(bool obscured);
 
   // Makes a char in obscured text at |index| to be revealed. |index| should be
   // a UTF16 text index. If there is a previous revealed index, the previous one
   // is cleared and only the last set index will be revealed. If |index| is -1
   // or out of range, no char will be revealed. The revealed index is also
   // cleared when SetText or SetObscured is called.
   void SetObscuredRevealIndex(int index);
 
+  void SetReplaceNewlineCharsWithSymbols(bool replace);

[Alexei Svitkine (slow), 2014/07/15 14:42:50]

Add a comment.

[msw, 2014/07/15 16:53:05]

Done.

+
   // TODO(ckocagil): Multiline text rendering is currently only supported on
   // Windows. Support other platforms.
   bool multiline() const { return multiline_; }
   void SetMultiline(bool multiline);
 
   // Set the maximum length of the displayed layout text, not the actual text.
   // A |length| of 0 forgoes a hard limit, but does not guarantee proper
   // functionality of very long strings. Applies to subsequent SetText calls.
   // WARNING: Only use this for system limits, it lacks complex text support.
   void set_truncate_length(size_t length) { truncate_length_ = length; }
 
   // The layout text will be elided to fit |display_rect| using this behavior.
   // The layout text may be shortened further by the truncate length.
   void SetElideBehavior(ElideBehavior elide_behavior);
+  ElideBehavior elide_behavior() const { return elide_behavior_; }
 
   const base::string16& layout_text() const { return layout_text_; }
 
   const Rect& display_rect() const { return display_rect_; }
   void SetDisplayRect(const Rect& r);
 
   bool background_is_transparent() const { return background_is_transparent_; }
   void set_background_is_transparent(bool transparent) {
     background_is_transparent_ = transparent;
   }
@@ skipping 131 matching lines @@
   // supplied index is already at the boundary of the string.
   size_t IndexOfAdjacentGrapheme(size_t index,
                                  LogicalCursorDirection direction);
 
   // Return a SelectionModel with the cursor at the current selection's start.
   // The returned value represents a cursor/caret position without a selection.
   SelectionModel GetSelectionModelForSelectionStart();
 
   // Sets shadows to drawn with text.
   void set_shadows(const ShadowValues& shadows) { shadows_ = shadows; }
+  const ShadowValues& shadows() { return shadows_; }
 
   typedef std::pair<Font, Range> FontSpan;
   // For testing purposes, returns which fonts were chosen for which parts of
   // the text by returning a vector of Font and Range pairs, where each range
   // specifies the character range for which the corresponding font has been
   // chosen.
   virtual std::vector<FontSpan> GetFontSpansForTesting() = 0;
 
   // Gets the horizontal bounds (relative to the left of the text, not the view)
   // of the glyph starting at |index|. If the glyph is RTL then the returned
@@ skipping 104 matching lines @@
   Vector2d GetLineOffset(size_t line_number);
 
   // Convert points from the text space to the view space and back. Handles the
   // display area, display offset, application LTR/RTL mode and multiline.
   Point ToTextPoint(const Point& point);
   Point ToViewPoint(const Point& point);
 
   // Convert a text space x-coordinate range to rects in view space.
   std::vector<Rect> TextBoundsToViewBounds(const Range& x);
 
+  // Get the alignment, resolving ALIGN_TO_HEAD with the current text direction.
+  HorizontalAlignment GetCurrentHorizontalAlignment();
+
   // Returns the line offset from the origin, accounts for text alignment only.
   Vector2d GetAlignmentOffset(size_t line_number);
 
   // Applies fade effects to |renderer|.
   void ApplyFadeEffects(internal::SkiaTextRenderer* renderer);
 
   // Applies text shadows to |renderer|.
   void ApplyTextShadows(internal::SkiaTextRenderer* renderer);
 
   // A convenience function to check whether the glyph attached to the caret
@@ skipping 116 matching lines @@
 
   // The maximum length of text to display, 0 forgoes a hard limit.
   size_t truncate_length_;
 
   // The behavior for eliding, fading, or truncating.
   ElideBehavior elide_behavior_;
 
   // The obscured and/or truncated text that will be displayed.
   base::string16 layout_text_;
 
+  // Whether newline characters should be replaced with newline symbols.
+  bool replace_newline_chars_with_symbols_;
+
   // Whether the text should be broken into multiple lines. Uses the width of
   // |display_rect_| as the width cap.
   bool multiline_;
 
   // Is the background transparent (either partially or fully)?
   bool background_is_transparent_;
 
   // The local display area for rendering the text.
   Rect display_rect_;
 
@@ skipping 25 matching lines @@
   // Lines computed by EnsureLayout. These should be invalidated with
   // ResetLayout and on |display_rect_| changes.
   std::vector<internal::Line> lines_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderText);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_H_