Allow various font weights in gfx.

ui/gfx/render_text.h

Index: ui/gfx/render_text.h
diff --git a/ui/gfx/render_text.h b/ui/gfx/render_text.h
index 6f56a697358781ba59b1bcfa12d82aa8e97c05ef..a677280c8965f3221759089c2dbddd1c61742082 100644
--- a/ui/gfx/render_text.h
+++ b/ui/gfx/render_text.h
@@ -62,7 +62,7 @@ class GFX_EXPORT SkiaTextRenderer {
                            bool subpixel_rendering_suppressed);
   void SetTypeface(SkTypeface* typeface);
   void SetTextSize(SkScalar size);
-  void SetFontWithStyle(const Font& font, int font_style);
+  void SetFont(const Font& font, bool italic, gfx::Font::Weight weight);
   void SetForegroundColor(SkColor foreground);
   void SetShader(SkShader* shader);
   // Sets underline metrics to use if the text will be drawn with an underline.
@@ -123,6 +123,7 @@ class StyleIterator {
  public:
   StyleIterator(const BreakList<SkColor>& colors,
                 const BreakList<BaselineStyle>& baselines,
+                const BreakList<gfx::Font::Weight>& weights,
                 const std::vector<BreakList<bool>>& styles);
   ~StyleIterator();
 
@@ -130,6 +131,7 @@ class StyleIterator {
   SkColor color() const { return color_->second; }
   BaselineStyle baseline() const { return baseline_->second; }
   bool style(TextStyle s) const { return style_[s]->second; }
+  gfx::Font::Weight weight() const { return weight_->second; }
 
   // Get the intersecting range of the current iterator set.
   Range GetRange() const;
@@ -140,10 +142,12 @@ class StyleIterator {
  private:
   BreakList<SkColor> colors_;
   BreakList<BaselineStyle> baselines_;
+  BreakList<gfx::Font::Weight> weights_;
   std::vector<BreakList<bool> > styles_;
 
   BreakList<SkColor>::const_iterator color_;
   BreakList<BaselineStyle>::const_iterator baseline_;
+  BreakList<gfx::Font::Weight>::const_iterator weight_;
   std::vector<BreakList<bool>::const_iterator> style_;
 
   DISALLOW_COPY_AND_ASSIGN(StyleIterator);
@@ -186,9 +190,11 @@ struct Line {
   int baseline;
 };
 
-// Creates an SkTypeface from a font and a |gfx::Font::FontStyle|.
+// Creates an SkTypeface from a font |gfx::Font::FontStyle| and weight.

[msw, 2016/03/22 18:24:11]

nit: now it takes a bool for italic, not |gfx::Font::FontStyle|.
consider: "from a font, a flag for italic, and a font weight."

[Mikus, 2016/03/23 17:53:22]

Done.

 // May return NULL.
-skia::RefPtr<SkTypeface> CreateSkiaTypeface(const gfx::Font& font, int style);
+skia::RefPtr<SkTypeface> CreateSkiaTypeface(const gfx::Font& font,
+                                            bool italic,
+                                            gfx::Font::Weight weight);
 
 // Applies the given FontRenderParams to a Skia |paint|.
 void ApplyRenderParams(const FontRenderParams& params,
@@ -363,6 +369,9 @@ class GFX_EXPORT RenderText {
   void SetStyle(TextStyle style, bool value);
   void ApplyStyle(TextStyle style, bool value, const Range& range);
 
+  void SetWeight(gfx::Font::Weight weight);
+  void ApplyWeight(gfx::Font::Weight weight, const Range& range);
+
   // Returns whether this style is enabled consistently across the entire
   // RenderText.
   bool GetStyle(TextStyle style) const;
@@ -486,6 +495,7 @@ class GFX_EXPORT RenderText {
 
   const BreakList<SkColor>& colors() const { return colors_; }
   const BreakList<BaselineStyle>& baselines() const { return baselines_; }
+  const BreakList<gfx::Font::Weight>& weights() const { return weights_; }
   const std::vector<BreakList<bool> >& styles() const { return styles_; }
 
   const std::vector<internal::Line>& lines() const { return lines_; }
@@ -741,6 +751,7 @@ class GFX_EXPORT RenderText {
   // TODO(msw): Expand to support cursor, selection, background, etc. colors.
   BreakList<SkColor> colors_;
   BreakList<BaselineStyle> baselines_;
+  BreakList<gfx::Font::Weight> weights_;
   std::vector<BreakList<bool> > styles_;
 
   // Breaks saved without temporary composition and selection styling.