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ink_drop_host_view.cc
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ink_drop_host_view.cc
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// 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.
#include "ui/views/animation/ink_drop_host_view.h"
#include <utility>
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/events/event.h"
#include "ui/events/scoped_target_handler.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/views/animation/flood_fill_ink_drop_ripple.h"
#include "ui/views/animation/ink_drop.h"
#include "ui/views/animation/ink_drop_highlight.h"
#include "ui/views/animation/ink_drop_impl.h"
#include "ui/views/animation/ink_drop_mask.h"
#include "ui/views/animation/ink_drop_stub.h"
#include "ui/views/animation/square_ink_drop_ripple.h"
#include "ui/views/controls/focus_ring.h"
#include "ui/views/controls/highlight_path_generator.h"
#include "ui/views/style/platform_style.h"
#include "ui/views/view_class_properties.h"
namespace views {
// static
constexpr gfx::Size InkDropHost::kDefaultSquareInkDropSize;
InkDropHost::InkDropHostEventHandlerDelegate::InkDropHostEventHandlerDelegate(
InkDropHost* ink_drop_host)
: ink_drop_host_(ink_drop_host) {}
bool InkDropHost::InkDropHostEventHandlerDelegate::HasInkDrop() const {
return ink_drop_host_->HasInkDrop();
}
InkDrop* InkDropHost::InkDropHostEventHandlerDelegate::GetInkDrop() {
return ink_drop_host_->GetInkDrop();
}
bool InkDropHost::InkDropHostEventHandlerDelegate::SupportsGestureEvents()
const {
return ink_drop_host_->ink_drop_mode_ == InkDropMode::ON;
}
InkDropHost::ViewLayerTransformObserver::ViewLayerTransformObserver(
InkDropHost* ink_drop_host,
View* host_view)
: ink_drop_host_(ink_drop_host) {
observation_.Observe(host_view);
}
InkDropHost::ViewLayerTransformObserver::~ViewLayerTransformObserver() =
default;
void InkDropHost::ViewLayerTransformObserver::OnViewLayerTransformed(
View* observed_view) {
// Notify the ink drop that we have transformed so it can adapt
// accordingly.
if (ink_drop_host_->HasInkDrop()) {
ink_drop_host_->GetInkDrop()->HostTransformChanged(
observed_view->GetTransform());
}
}
InkDropHost::InkDropHost(View* view)
: host_view_(view),
host_view_transform_observer_(this, view),
ink_drop_event_handler_delegate_(this),
ink_drop_event_handler_(view, &ink_drop_event_handler_delegate_) {}
InkDropHost::~InkDropHost() = default;
std::unique_ptr<InkDrop> InkDropHost::CreateInkDrop() {
if (create_ink_drop_callback_)
return create_ink_drop_callback_.Run();
return InkDrop::CreateInkDropForFloodFillRipple(this);
}
void InkDropHost::SetCreateInkDropCallback(
base::RepeatingCallback<std::unique_ptr<InkDrop>()> callback) {
create_ink_drop_callback_ = std::move(callback);
}
std::unique_ptr<InkDropRipple> InkDropHost::CreateInkDropRipple() const {
if (create_ink_drop_ripple_callback_)
return create_ink_drop_ripple_callback_.Run();
return std::make_unique<views::FloodFillInkDropRipple>(
host_view_->size(), gfx::Insets(), GetInkDropCenterBasedOnLastEvent(),
GetBaseColor(), GetVisibleOpacity());
}
void InkDropHost::SetCreateRippleCallback(
base::RepeatingCallback<std::unique_ptr<InkDropRipple>()> callback) {
create_ink_drop_ripple_callback_ = std::move(callback);
}
gfx::Point InkDropHost::GetInkDropCenterBasedOnLastEvent() const {
return GetEventHandler()->GetLastRippleTriggeringEvent()
? GetEventHandler()->GetLastRippleTriggeringEvent()->location()
: host_view_->GetMirroredRect(host_view_->GetContentsBounds())
.CenterPoint();
}
std::unique_ptr<InkDropHighlight> InkDropHost::CreateInkDropHighlight() const {
if (create_ink_drop_highlight_callback_)
return create_ink_drop_highlight_callback_.Run();
auto highlight = std::make_unique<views::InkDropHighlight>(
host_view_->size(), 0,
gfx::RectF(host_view_->GetMirroredRect(host_view_->GetLocalBounds()))
.CenterPoint(),
GetBaseColor());
// TODO(pbos): Once |ink_drop_highlight_opacity_| is either always set or
// callers are using the default InkDropHighlight value then make this a
// constructor argument to InkDropHighlight.
if (ink_drop_highlight_opacity_)
highlight->set_visible_opacity(*ink_drop_highlight_opacity_);
return highlight;
}
void InkDropHost::SetCreateHighlightCallback(
base::RepeatingCallback<std::unique_ptr<InkDropHighlight>()> callback) {
create_ink_drop_highlight_callback_ = std::move(callback);
}
std::unique_ptr<views::InkDropMask> InkDropHost::CreateInkDropMask() const {
if (create_ink_drop_mask_callback_)
return create_ink_drop_mask_callback_.Run();
return std::make_unique<views::PathInkDropMask>(host_view_->size(),
GetHighlightPath(host_view_));
}
void InkDropHost::SetCreateMaskCallback(
base::RepeatingCallback<std::unique_ptr<InkDropMask>()> callback) {
create_ink_drop_mask_callback_ = std::move(callback);
}
SkColor InkDropHost::GetBaseColor() const {
if (ink_drop_base_color_callback_)
return ink_drop_base_color_callback_.Run();
DCHECK(ink_drop_base_color_);
return ink_drop_base_color_.value_or(gfx::kPlaceholderColor);
}
void InkDropHost::SetBaseColor(SkColor color) {
ink_drop_base_color_ = color;
}
void InkDropHost::SetBaseColorCallback(
base::RepeatingCallback<SkColor()> callback) {
ink_drop_base_color_callback_ = std::move(callback);
}
void InkDropHost::SetMode(InkDropMode ink_drop_mode) {
ink_drop_mode_ = ink_drop_mode;
ink_drop_.reset();
}
void InkDropHost::SetVisibleOpacity(float visible_opacity) {
if (visible_opacity == ink_drop_visible_opacity_)
return;
ink_drop_visible_opacity_ = visible_opacity;
}
float InkDropHost::GetVisibleOpacity() const {
return ink_drop_visible_opacity_;
}
void InkDropHost::SetHighlightOpacity(absl::optional<float> opacity) {
if (opacity == ink_drop_highlight_opacity_)
return;
ink_drop_highlight_opacity_ = opacity;
}
void InkDropHost::SetSmallCornerRadius(int small_radius) {
if (small_radius == ink_drop_small_corner_radius_)
return;
ink_drop_small_corner_radius_ = small_radius;
}
int InkDropHost::GetSmallCornerRadius() const {
return ink_drop_small_corner_radius_;
}
void InkDropHost::SetLargeCornerRadius(int large_radius) {
if (large_radius == ink_drop_large_corner_radius_)
return;
ink_drop_large_corner_radius_ = large_radius;
}
int InkDropHost::GetLargeCornerRadius() const {
return ink_drop_large_corner_radius_;
}
void InkDropHost::AnimateToState(InkDropState state,
const ui::LocatedEvent* event) {
GetEventHandler()->AnimateToState(state, event);
}
bool InkDropHost::HasInkDrop() const {
return !!ink_drop_;
}
InkDrop* InkDropHost::GetInkDrop() {
if (!ink_drop_) {
if (ink_drop_mode_ == InkDropMode::OFF)
ink_drop_ = std::make_unique<InkDropStub>();
else
ink_drop_ = CreateInkDrop();
}
return ink_drop_.get();
}
bool InkDropHost::GetHighlighted() const {
return ink_drop_ && ink_drop_->IsHighlightFadingInOrVisible();
}
base::CallbackListSubscription InkDropHost::AddHighlightedChangedCallback(
base::RepeatingClosure callback) {
return highlighted_changed_callbacks_.Add(std::move(callback));
}
void InkDropHost::OnInkDropHighlightedChanged() {
highlighted_changed_callbacks_.Notify();
}
void InkDropHost::AddInkDropLayer(ui::Layer* ink_drop_layer) {
// If a clip is provided, use that as it is more performant than a mask.
if (!AddInkDropClip(ink_drop_layer))
InstallInkDropMask(ink_drop_layer);
host_view_->AddLayerBeneathView(ink_drop_layer);
}
void InkDropHost::RemoveInkDropLayer(ui::Layer* ink_drop_layer) {
host_view_->RemoveLayerBeneathView(ink_drop_layer);
// Remove clipping.
ink_drop_layer->SetClipRect(gfx::Rect());
ink_drop_layer->SetRoundedCornerRadius(gfx::RoundedCornersF(0.f));
// Layers safely handle destroying a mask layer before the masked layer.
ink_drop_mask_.reset();
}
std::unique_ptr<InkDropRipple> InkDropHost::CreateSquareRipple(
const gfx::Point& center_point,
const gfx::Size& size) const {
constexpr float kLargeInkDropScale = 1.333f;
const gfx::Size large_size = gfx::ScaleToCeiledSize(size, kLargeInkDropScale);
auto ripple = std::make_unique<SquareInkDropRipple>(
large_size, ink_drop_large_corner_radius_, size,
ink_drop_small_corner_radius_, center_point, GetBaseColor(),
GetVisibleOpacity());
return ripple;
}
const InkDropEventHandler* InkDropHost::GetEventHandler() const {
return &ink_drop_event_handler_;
}
InkDropEventHandler* InkDropHost::GetEventHandler() {
return const_cast<InkDropEventHandler*>(
const_cast<const InkDropHost*>(this)->GetEventHandler());
}
bool InkDropHost::AddInkDropClip(ui::Layer* ink_drop_layer) {
absl::optional<gfx::RRectF> clipping_data =
HighlightPathGenerator::GetRoundRectForView(host_view_);
if (!clipping_data)
return false;
ink_drop_layer->SetClipRect(gfx::ToEnclosingRect(clipping_data->rect()));
auto get_corner_radii =
[&clipping_data](gfx::RRectF::Corner corner) -> float {
return clipping_data.value().GetCornerRadii(corner).x();
};
gfx::RoundedCornersF rounded_corners;
rounded_corners.set_upper_left(
get_corner_radii(gfx::RRectF::Corner::kUpperLeft));
rounded_corners.set_upper_right(
get_corner_radii(gfx::RRectF::Corner::kUpperRight));
rounded_corners.set_lower_right(
get_corner_radii(gfx::RRectF::Corner::kLowerRight));
rounded_corners.set_lower_left(
get_corner_radii(gfx::RRectF::Corner::kLowerLeft));
ink_drop_layer->SetRoundedCornerRadius(rounded_corners);
ink_drop_layer->SetIsFastRoundedCorner(true);
return true;
}
void InkDropHost::InstallInkDropMask(ui::Layer* ink_drop_layer) {
ink_drop_mask_ = CreateInkDropMask();
DCHECK(ink_drop_mask_);
ink_drop_layer->SetMaskLayer(ink_drop_mask_->layer());
}
} // namespace views