ui/views/animation/ink_drop_delegate.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/callback.h"
   6 #include "base/macros.h"
   7 #include "third_party/skia/include/core/SkColor.h"
   8 #include "ui/compositor/layer_delegate.h"
   9 #include "ui/compositor/paint_context.h"
  10 #include "ui/gfx/geometry/rect.h"
  11
  12 namespace ui {
  13 class Layer;
  14 }  // namespace ui
  15
  16 namespace views {
  17
  18 // Renders the visual feedback for an ink drop animation. Will render a circle
  19 // if |circle_| is true, otherwise renders a rounded rectangle.
  20 class InkDropDelegate : public ui::LayerDelegate {
  21  public:
  22   InkDropDelegate(ui::Layer* layer,
  23                   SkColor color,
  24                   int circle_radius,
  25                   int rounded_rect_corner_radius);
  26   ~InkDropDelegate() override;
  27
  28   // Sets the visual style of the feedback.
  29   void set_should_render_circle(bool should_render_circle) {
  30     should_render_circle_ = should_render_circle;
  31   }
  32
  33   bool should_render_circle() const { return should_render_circle_; }
  34
  35   // ui::LayerDelegate:
  36   void OnPaintLayer(const ui::PaintContext& context) override;
  37   void OnDelegatedFrameDamage(const gfx::Rect& damage_rect_in_dip) override;
  38   void OnDeviceScaleFactorChanged(float device_scale_factor) override;
  39   base::Closure PrepareForLayerBoundsChange() override;
  40
  41  private:
  42   // The ui::Layer being rendered to.
  43   ui::Layer* layer_;
  44
  45   // The color to paint.
  46   SkColor color_;
  47
  48   // When true renders a circle, otherwise renders a rounded rectangle.
  49   bool should_render_circle_;
  50
  51   // The radius of the circle.
  52   const int circle_radius_;
  53
  54   // The radius of the rounded rectangles corners.
  55   const int rounded_rect_corner_radius_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(InkDropDelegate);
  58 };
  59
  60 }  // namespace views