Color the ink drop ripple and hover effects based on theming.

ui/views/animation/ink_drop_hover.cc

 // Copyright 2015 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.
 
 #include "ui/views/animation/ink_drop_hover.h"
 
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/compositor/callback_layer_animation_observer.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animation_sequence.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/views/animation/ink_drop_painted_layer_delegates.h"
 
 namespace views {
 
 namespace {
 
 // The opacity of the hover when it is visible.
-const float kHoverVisibleOpacity = 0.08f;

[Evan Stade, 2016/02/09 20:39:28]

I used algebra for these conversions

[bruthig, 2016/02/09 21:01:06]

Do you think we'll have to parameterize these in the future too?

[Evan Stade, 2016/02/09 22:54:28]

no

+const float kHoverVisibleOpacity = 0.128f;
 
 // The opacity of the hover when it is not visible.
 const float kHiddenOpacity = 0.0f;
 
-// The hover color.
-const SkColor kHoverColor = SK_ColorBLACK;
-
 }  // namespace
 
-InkDropHover::InkDropHover(const gfx::Size& size, int corner_radius)
+InkDropHover::InkDropHover(SkColor color,
+                           const gfx::Size& size,
+                           int corner_radius)
     : layer_delegate_(
-          new RoundedRectangleLayerDelegate(kHoverColor, size, corner_radius)),
+          new RoundedRectangleLayerDelegate(color, size, corner_radius)),
       layer_(new ui::Layer()) {
   layer_->SetBounds(gfx::Rect(size));
   layer_->SetFillsBoundsOpaquely(false);
   layer_->set_delegate(layer_delegate_.get());
   layer_->SetVisible(false);
   layer_->SetOpacity(kHoverVisibleOpacity);
   layer_->SetMasksToBounds(false);
   layer_->set_name("InkDropHover:layer");
   SetCenterPoint(gfx::Rect(size).CenterPoint());
 }
@@ skipping 34 matching lines @@
           duration);
   ui::LayerAnimationSequence* animation_sequence =
       new ui::LayerAnimationSequence(animation_element);
   animation_sequence->AddObserver(animation_observer);
 
   animator->StartAnimation(animation_sequence);
 
   animation_observer->SetActive();
 }
 
+SkColor InkDropHover::GetColor() const {
+  return layer_delegate_->color();
+}
+
 void InkDropHover::SetCenterPoint(const gfx::Point& center_point) {
   gfx::Transform transform;
   transform.Translate(center_point.x() - layer_->bounds().CenterPoint().x(),
                       center_point.y() - layer_->bounds().CenterPoint().y());
   layer_->SetTransform(transform);
 }
 
 bool InkDropHover::AnimationEndedCallback(
     HoverAnimationType animation_type,
     const ui::CallbackLayerAnimationObserver& observer) {
   // AnimationEndedCallback() may be invoked when this is being destroyed and
   // |layer_| may be null.
   if (animation_type == FADE_OUT && layer_)
     layer_->SetVisible(false);
   return true;
 }
 
 }  // namespace views