Handle view resize for ripple

ui/views/animation/flood_fill_ink_drop_ripple.h

 // Copyright 2016 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_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_
 #define UI_VIEWS_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "base/time/time.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/gfx/animation/tween.h"
+#include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/transform.h"
 #include "ui/views/animation/ink_drop_painted_layer_delegates.h"
 #include "ui/views/animation/ink_drop_ripple.h"
 #include "ui/views/animation/ink_drop_state.h"
 #include "ui/views/views_export.h"
 
 namespace ui {
 class Layer;
 }  // namespace ui
 
 namespace views {
 class CircleLayerDelegate;
 
 namespace test {
 class FloodFillInkDropRippleTestApi;
 }  // namespace test
 
-// An ink drop ripple that starts as a small circle and flood fills a
-// rectangle of the given size. The circle is clipped to the rectangles bounds.
+// An ink drop ripple that starts as a small circle and flood fills a rectangle
+// of the size determined by |host_size| and |clip_insets| (if provided). The
+// circle is clipped to this rectangle's bounds.
+// Constructors take |host_size| and |clip_insets| and calculate the effective
+// bounds of the flood fill based on them. This way, the ripple's bounds are
+// defined relative to the host size and can be recalculated whenever the host
+// size is changed.
 //
 // The valid InkDropState transitions are defined below:
 //
 //   {All InkDropStates}      => HIDDEN
 //   HIDDEN                   => ACTION_PENDING
 //   HIDDEN, ACTION_PENDING   => ACTION_TRIGGERED
 //   ACTION_PENDING           => ALTERNATE_ACTION_PENDING
 //   ALTERNATE_ACTION_PENDING => ALTERNATE_ACTION_TRIGGERED
 //   {All InkDropStates}      => ACTIVATED
 //   {All InkDropStates}      => DEACTIVATED
 //
 class VIEWS_EXPORT FloodFillInkDropRipple : public InkDropRipple {
  public:
-  FloodFillInkDropRipple(const gfx::Rect& clip_bounds,
+  FloodFillInkDropRipple(const gfx::Size& host_size,
+                         const gfx::Insets& clip_insets,
+                         const gfx::Point& center_point,
+                         SkColor color,
+                         float visible_opacity);
+  FloodFillInkDropRipple(const gfx::Size& host_size,
                          const gfx::Point& center_point,
                          SkColor color,
                          float visible_opacity);
   ~FloodFillInkDropRipple() override;
 
   // InkDropRipple:
+  void HostSizeChanged(const gfx::Size& new_size) override;
   void SnapToActivated() override;
   ui::Layer* GetRootLayer() override;
 
  private:
   friend class test::FloodFillInkDropRippleTestApi;
 
   // InkDropRipple:
   void AnimateStateChange(InkDropState old_ink_drop_state,
                           InkDropState new_ink_drop_state,
                           ui::LayerAnimationObserver* observer) override;
@@ skipping 30 matching lines @@
   // |target_radius|.
   gfx::Transform CalculateTransform(float target_radius) const;
 
   // Returns the target Transform for when the ink drop is fully shown.
   gfx::Transform GetMaxSizeTargetTransform() const;
 
   // Returns the largest distance from |point| to the corners of the
   // |root_layer_| bounds.
   float MaxDistanceToCorners(const gfx::Point& point) const;
 
+  // Insets of the clip area relative to the host bounds.
+  gfx::Insets clip_insets_;
+
   // The point where the Center of the ink drop's circle should be drawn.
   gfx::Point center_point_;
 
   // Ink drop opacity when it is visible.
   float visible_opacity_;
 
   // The root layer that parents the animating layer. The root layer is used to
   // manipulate opacity and clipping bounds, and it child is used to manipulate
   // the different shape of the ink drop.
   ui::Layer root_layer_;
 
   // ui::LayerDelegate to paint the |painted_layer_|.
   CircleLayerDelegate circle_layer_delegate_;
 
   // Child ui::Layer of |root_layer_|. Used to  manipulate the different size
   // and shape of the ink drop.
   ui::Layer painted_layer_;
 
   // The current ink drop state.
   InkDropState ink_drop_state_;
 
   DISALLOW_COPY_AND_ASSIGN(FloodFillInkDropRipple);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_FLOOD_FILL_INK_DROP_RIPPLE_H_