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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/animation/pulsing_ink_drop_mask.h"
#include "base/i18n/rtl.h"
#include "ui/compositor/paint_recorder.h"
#include "ui/views/view_class_properties.h"
namespace {
// Cycle duration of ink drop pulsing animation used for in-product help.
constexpr base::TimeDelta kFeaturePromoPulseDuration = base::Milliseconds(800);
// Max inset for pulsing animation.
constexpr float kFeaturePromoPulseInsetDip = 3.0f;
} // namespace
namespace views {
PulsingInkDropMask::PulsingInkDropMask(views::View* layer_container)
: AnimationDelegateViews(layer_container),
views::InkDropMask(layer_container->size()),
layer_container_(layer_container),
normal_corner_radius_(layer_container->height() / 2.0f),
throb_animation_(this) {
throb_animation_.SetThrobDuration(kFeaturePromoPulseDuration);
throb_animation_.StartThrobbing(-1);
}
void PulsingInkDropMask::OnPaintLayer(const ui::PaintContext& context) {
cc::PaintFlags flags;
flags.setStyle(cc::PaintFlags::kFill_Style);
flags.setAntiAlias(true);
ui::PaintRecorder recorder(context, layer()->size());
gfx::RectF bounds(layer()->bounds());
const gfx::Insets* const internal_padding =
layer_container_->GetProperty(views::kInternalPaddingKey);
if (internal_padding) {
gfx::Insets insets(*internal_padding);
if (layer_container_->GetFlipCanvasOnPaintForRTLUI() &&
base::i18n::IsRTL()) {
insets.set_left(internal_padding->right());
insets.set_right(internal_padding->left());
}
bounds.Inset(gfx::InsetsF(insets));
}
const float current_inset =
throb_animation_.CurrentValueBetween(0.0f, kFeaturePromoPulseInsetDip);
bounds.Inset(gfx::InsetsF(current_inset));
const float corner_radius = normal_corner_radius_ - current_inset;
recorder.canvas()->DrawRoundRect(bounds, corner_radius, flags);
}
void PulsingInkDropMask::AnimationProgressed(const gfx::Animation* animation) {
DCHECK_EQ(animation, &throb_animation_);
layer()->SchedulePaint(gfx::Rect(layer()->size()));
// This is a workaround for crbug.com/935808: for scale factors >1,
// invalidating the mask layer doesn't cause the whole layer to be repainted
// on screen. TODO(crbug.com/40615539): remove this workaround once the bug is
// fixed.
layer_container_->SchedulePaint();
}
} // namespace views
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