Expand the Material Design hover as it fades out when a ripple is triggered.

ui/views/animation/ink_drop_host_view.cc

Index: ui/views/animation/ink_drop_host_view.cc
diff --git a/ui/views/animation/ink_drop_host_view.cc b/ui/views/animation/ink_drop_host_view.cc
index 1070f031d2156ecc6666a8961209e5c770fdd79d..b02cd98ba9fbed88353393da1cc4363fb0431df9 100644
--- a/ui/views/animation/ink_drop_host_view.cc
+++ b/ui/views/animation/ink_drop_host_view.cc
@@ -5,11 +5,20 @@
 #include "ui/views/animation/ink_drop_host_view.h"
 
 #include "ui/gfx/color_palette.h"
+#include "ui/gfx/geometry/size_conversions.h"
 #include "ui/views/animation/ink_drop_hover.h"
 #include "ui/views/animation/square_ink_drop_animation.h"
 
 namespace views {
 
+namespace {
+
+gfx::Size CalculateLargeInkDropSize(const gfx::Size small_size) {
+  return gfx::Size(small_size.width() * 4 / 3, small_size.height() * 4 / 3);

[varkha, 2016/04/21 16:16:49]

nit: There's a ScaleToCeiledSize helper that you may be able to use and make a
4/3 into a constant.

[bruthig, 2016/04/21 21:14:04]

Done.

+}
+
+}  // namespace
+
 // Default sizes for ink drop effects.
 const int kInkDropSize = 24;
 const int kInkDropLargeCornerRadius = 4;
@@ -36,12 +45,10 @@ void InkDropHostView::RemoveInkDropLayer(ui::Layer* ink_drop_layer) {
 
 std::unique_ptr<InkDropAnimation> InkDropHostView::CreateInkDropAnimation()
     const {
-  gfx::Size large_drop(ink_drop_size_.width() * 4 / 3,
-                       ink_drop_size_.height() * 4 / 3);
-
   std::unique_ptr<InkDropAnimation> animation(new SquareInkDropAnimation(
-      large_drop, kInkDropLargeCornerRadius, ink_drop_size_,
-      kInkDropSmallCornerRadius, GetInkDropCenter(), GetInkDropBaseColor()));
+      CalculateLargeInkDropSize(ink_drop_size_), kInkDropLargeCornerRadius,
+      ink_drop_size_, kInkDropSmallCornerRadius, GetInkDropCenter(),
+      GetInkDropBaseColor()));
   return animation;
 }
 
@@ -49,6 +56,8 @@ std::unique_ptr<InkDropHover> InkDropHostView::CreateInkDropHover() const {
   std::unique_ptr<InkDropHover> hover(
       new InkDropHover(ink_drop_size_, kInkDropSmallCornerRadius,
                        GetInkDropCenter(), GetInkDropBaseColor()));
+  hover->set_explode_size(
+      gfx::SizeF(CalculateLargeInkDropSize(ink_drop_size_)));
   return hover;
 }