1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
// Copyright 2025 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_path_ink_drop_mask.h"
#include <algorithm>
#include "base/i18n/rtl.h"
#include "ui/compositor/paint_recorder.h"
#include "ui/gfx/geometry/skia_conversions.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 double kFeaturePromoPulseMaxInsetDip = 3.0;
// Returns how much the pulsing inkdrop should pulse inwards from the
// container's `bounds`, in DIP.
double GetThrobInsetDip(const SkRect& bounds) {
// Verify that neither axis of `bounds` is zero.
if (bounds.isEmpty()) {
return kFeaturePromoPulseMaxInsetDip;
}
// The pulsing inkdrop will pulse between the full view bounds and the view
// bounds modified by some inset. Since this involves scaling, if the shorter
// axis A is scaled by X, then the longer axis B pulses by X * (B / A). This
// excessive pulsing looks bad.
//
// To correct for this, adjust so that the longer axis pulses by
// kFeaturePromoPulseMaxInsetDip, and the shorter axis pulses by
// proportionately less.
double ratio = bounds.width() / bounds.height();
ratio = std::min(ratio, 1.0 / ratio);
return ratio * kFeaturePromoPulseMaxInsetDip;
}
} // namespace
namespace views {
PulsingPathInkDropMask::PulsingPathInkDropMask(views::View* layer_container,
SkPath path)
: AnimationDelegateViews(layer_container),
views::InkDropMask(layer_container->size()),
layer_container_(layer_container),
path_(path),
initial_rect_(path.getBounds()),
throb_inset_(GetThrobInsetDip(initial_rect_)),
throb_animation_(this) {
throb_animation_.SetThrobDuration(kFeaturePromoPulseDuration);
throb_animation_.StartThrobbing(-1);
}
PulsingPathInkDropMask::~PulsingPathInkDropMask() = default;
void PulsingPathInkDropMask::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, throb_inset_);
bounds.Inset(gfx::InsetsF(current_inset));
// Transform the highlight path to the target region.
//
// Note: this is not the correct calculation if the original inkdrop isn't
// centered in the target space. However, it should work for the vast majority
// of cases, and is no worse than what PulsingInkDropMask does.
SkPath path = path_.makeTransform(
SkMatrix::MakeRectToRect(initial_rect_, gfx::RectFToSkRect(bounds),
SkMatrix::ScaleToFit::kCenter_ScaleToFit),
SkApplyPerspectiveClip::kNo);
recorder.canvas()->DrawPath(path, flags);
}
void PulsingPathInkDropMask::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
|
