Fix gfx::Canvas::DrawStringRectWithHalo

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 <stddef.h>
 #include <stdint.h>
 
@@ skipping 45 matching lines @@
   explicit SkiaTextRenderer(Canvas* canvas);
   virtual ~SkiaTextRenderer();
 
   void SetDrawLooper(sk_sp<SkDrawLooper> draw_looper);
   void SetFontRenderParams(const FontRenderParams& params,
                            bool subpixel_rendering_suppressed);
   void SetTypeface(SkTypeface* typeface);
   void SetTextSize(SkScalar size);
   void SetForegroundColor(SkColor foreground);
   void SetShader(sk_sp<SkShader> shader);
+  void SetHaloEffect();
   // Sets underline metrics to use if the text will be drawn with an underline.
   // If not set, default values based on the size of the text will be used. The
   // two metrics must be set together.
   void SetUnderlineMetrics(SkScalar thickness, SkScalar position);
   void DrawSelection(const std::vector<Rect>& selection, SkColor color);
   virtual void DrawPosText(const SkPoint* pos,
                            const uint16_t* glyphs,
                            size_t glyph_count);
   // Draw underline and strike-through text decorations.
   // Based on |SkCanvas::DrawTextDecorations()| and constants from:
@@ skipping 228 matching lines @@
   const Rect& display_rect() const { return display_rect_; }
   void SetDisplayRect(const Rect& r);
 
   bool subpixel_rendering_suppressed() const {
     return subpixel_rendering_suppressed_;
   }
   void set_subpixel_rendering_suppressed(bool suppressed) {
     subpixel_rendering_suppressed_ = suppressed;
   }
 
+  bool halo_effect() const { return halo_effect_; }
+  void set_halo_effect(bool halo_effect) { halo_effect_ = halo_effect; }
+
   const SelectionModel& selection_model() const { return selection_model_; }
 
   const Range& selection() const { return selection_model_.selection(); }
 
   size_t cursor_position() const { return selection_model_.caret_pos(); }
   void SetCursorPosition(size_t position);
 
   // Moves the cursor left or right. Cursor movement is visual, meaning that
   // left and right are relative to screen, not the directionality of the text.
   // If |select| is false, the selection start is moved to the same position.
@@ skipping 500 matching lines @@
   // The cached bounds and offset are invalidated by changes to the cursor,
   // selection, font, and other operations that adjust the visible text bounds.
   bool cached_bounds_and_offset_valid_;
 
   // Text shadows to be drawn.
   ShadowValues shadows_;
 
   // A list of valid display text line break positions.
   BreakList<size_t> line_breaks_;
 
+  // Draw text with 1px border.
+  bool halo_effect_ = false;
+
   // Lines computed by EnsureLayout. These should be invalidated upon
   // OnLayoutTextAttributeChanged and OnDisplayTextAttributeChanged calls.
   std::vector<internal::Line> lines_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderText);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_H_