views: Support longer tooltips.

ui/views/corewm/tooltip_aura.h

Index: ui/views/corewm/tooltip_aura.h
diff --git a/ui/views/corewm/tooltip_aura.h b/ui/views/corewm/tooltip_aura.h
index ead119f5d95889c4a1e2e5fc1a5f72f4d807ef4c..5ac7c5091a10ec974e70783c5c28f5f38efa5472 100644
--- a/ui/views/corewm/tooltip_aura.h
+++ b/ui/views/corewm/tooltip_aura.h
@@ -23,28 +23,32 @@ namespace corewm {
 // Implementation of Tooltip that shows the tooltip using a Widget and Label.
 class VIEWS_EXPORT TooltipAura : public Tooltip, public WidgetObserver {
  public:
+  // Preferred maximum tooltip width, in pixels. If a tooltip's text is wider
+  // than this width, it will be wrapped (unless doing so would truncate words
+  // in the text).
+  static const int kPreferredWidthPixels;
+
   explicit TooltipAura(gfx::ScreenType screen_type);
   virtual ~TooltipAura();
 
-  // Trims the tooltip to fit in the width |max_width|, setting |text| to the
-  // clipped result, |width| to the width (in pixels) of the clipped text
-  // and |line_count| to the number of lines of text in the tooltip. |font_list|
-  // is used to layout |text|. |max_width| comes from GetMaxWidth().
+  // Trims |text| to fit in |max_size|, setting |text| to the clipped result,
+  // |width| to the width (in pixels) of the clipped text and |line_count| to
+  // the number of lines of text in the tooltip. |font_list| is used to layout
+  // |text|. |max_size| comes from GetMaxSize().
   static void TrimTooltipToFit(const gfx::FontList& font_list,
-                               int max_width,
+                               const gfx::Size& max_size,
                                base::string16* text,
                                int* width,
                                int* line_count);
 
  private:
-  // Returns the max width of the tooltip when shown at the specified location.
-  int GetMaxWidth(const gfx::Point& location) const;
+  // Returns the max size of the tooltip when shown at the specified location.
+  gfx::Size GetMaxSize(const gfx::Point& location) const;
 
   // Adjusts the bounds given by the arguments to fit inside the desktop
-  // and applies the adjusted bounds to the label_.
+  // and applies the adjusted bounds to |label_|.
   void SetTooltipBounds(const gfx::Point& mouse_pos,
-                        int tooltip_width,
-                        int tooltip_height);
+                        const gfx::Size& tooltip_size);
 
   // Destroys |widget_|.
   void DestroyWidget();