highlight intermediate tabs

ui/views/controls/glow_hover_controller.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_VIEWS_CONTROLS_GLOW_HOVER_CONTROLLER_H_
 #define UI_VIEWS_CONTROLS_GLOW_HOVER_CONTROLLER_H_
 
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/base/animation/slide_animation.h"
 #include "ui/views/views_export.h"
@@ skipping 11 matching lines @@
 // GlowHoverController is responsible for drawing a hover effect as is used by
 // the tabstrip. Typical usage:
 //   OnMouseEntered() -> invoke Show().
 //   OnMouseMoved()   -> invoke SetLocation().
 //   OnMouseExited()  -> invoke Hide().
 //   OnPaint()        -> if ShouldDraw() returns true invoke Draw().
 // Internally GlowHoverController uses an animation to animate the glow and
 // invokes SchedulePaint() back on the View as necessary.
 class VIEWS_EXPORT GlowHoverController : public ui::AnimationDelegate {
  public:
+  enum Style {
+    SUBTLE,
+    PRONOUNCED
+  };
+
   explicit GlowHoverController(views::View* view);
   virtual ~GlowHoverController();
 
   // Sets the AnimationContainer used by the animation.
   void SetAnimationContainer(ui::AnimationContainer* container);
 
   // Sets the location of the hover, relative to the View passed to the
   // constructor.
   void SetLocation(const gfx::Point& location);
 
   // Initiates showing the hover.
-  void Show();
+  void Show(Style style);
 
   // Hides the hover.
   void Hide();
 
   // Hides the hover immediately.
   void HideImmediately();
 
   // Returns the value of the animation.
   double GetAnimationValue() const;
 
@@ skipping 11 matching lines @@
 
  private:
   // View we're drawing to.
   views::View* view_;
 
   // Opacity of the glow ramps up over time.
   ui::SlideAnimation animation_;
 
   // Location of the glow, relative to view.
   gfx::Point location_;
+  double opacity_scale_;
 
   DISALLOW_COPY_AND_ASSIGN(GlowHoverController);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_GLOW_HOVER_CONTROLLER_H_