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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/app_list/views/search_result_image_view.h"
#include <algorithm>
#include <memory>
#include <utility>
#include "ash/app_list/model/search/search_result.h"
#include "ash/app_list/views/pulsing_block_view.h"
#include "ash/app_list/views/search_result_image_list_view.h"
#include "ash/app_list/views/search_result_image_view_delegate.h"
#include "ash/style/ash_color_id.h"
#include "cc/paint/display_item_list.h"
#include "chromeos/constants/chromeos_features.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/compositor/compositor.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/gfx/image/image_skia_operations.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/highlight_path_generator.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/view_utils.h"
#include "ui/views/widget/widget.h"
namespace ash {
namespace {
// Sizing and spacing values for `result_image_`.
constexpr int kRoundedCornerRadius = 16;
// Focus ring constants
constexpr int kSpaceBetweenFocusRingAndImage = 2;
constexpr int kFocusRingCornerRadius =
kRoundedCornerRadius + kSpaceBetweenFocusRingAndImage;
constexpr gfx::Insets kFocusRingInsets =
gfx::Insets(-kSpaceBetweenFocusRingAndImage -
views::FocusRing::kDefaultHaloThickness / 2);
// Dragged image constants
constexpr double kDraggedImageOpacity = 0.6;
class ImagePreviewView : public views::ImageButton {
public:
METADATA_HEADER(ImagePreviewView);
ImagePreviewView() {
SetInstallFocusRingOnFocus(false);
SetFocusBehavior(FocusBehavior::ACCESSIBLE_ONLY);
}
ImagePreviewView(const ImagePreviewView&) = delete;
ImagePreviewView& operator=(const ImagePreviewView&) = delete;
~ImagePreviewView() override = default;
private:
// views::ImageView:
void PaintButtonContents(gfx::Canvas* canvas) override {
if (GetImage(views::Button::STATE_NORMAL).isNull()) {
return;
}
SkPath mask;
mask.addRoundRect(gfx::RectToSkRect(GetContentsBounds()),
kRoundedCornerRadius, kRoundedCornerRadius);
canvas->ClipPath(mask, true);
views::ImageButton::PaintButtonContents(canvas);
views::FocusRing::Get(parent())->SchedulePaint();
}
};
BEGIN_METADATA(ImagePreviewView, views::ImageButton)
END_METADATA
} // namespace
SearchResultImageView::SearchResultImageView(
int index,
SearchResultImageListView* list_view)
: index_(index), list_view_(list_view) {
SetLayoutManager(std::make_unique<views::FillLayout>());
result_image_ = AddChildView(std::make_unique<ImagePreviewView>());
result_image_->SetCanProcessEventsWithinSubtree(false);
result_image_->GetViewAccessibility().OverrideIsIgnored(true);
views::FocusRing::Install(this);
views::FocusRing* const focus_ring = views::FocusRing::Get(this);
focus_ring->SetOutsetFocusRingDisabled(true);
const bool is_jelly_enabled = chromeos::features::IsJellyEnabled();
focus_ring->SetColorId(is_jelly_enabled ? static_cast<ui::ColorId>(
cros_tokens::kCrosSysFocusRing)
: ui::kColorAshFocusRing);
focus_ring->SetHasFocusPredicate(base::BindRepeating([](const View* view) {
const auto* v = views::AsViewClass<SearchResultBaseView>(view);
CHECK(v);
return v->selected();
}));
views::InstallRoundRectHighlightPathGenerator(this, kFocusRingInsets,
kFocusRingCornerRadius);
SetCallback(base::BindRepeating(&SearchResultImageView::OnImageViewPressed,
base::Unretained(this)));
set_drag_controller(SearchResultImageViewDelegate::Get());
}
void SearchResultImageView::OnImageViewPressed(const ui::Event& event) {
list_view_->SearchResultActivated(this, event.flags(),
true /* by_button_press */);
}
gfx::Size SearchResultImageView::CalculatePreferredSize() const {
// Keep the ratio of the width and height be 3:2.
return gfx::Size(preferred_width_, 2 * preferred_width_ / 3);
}
void SearchResultImageView::OnResultChanged() {
OnMetadataChanged();
SchedulePaint();
}
void SearchResultImageView::ConfigureLayoutForAvailableWidth(int width) {
if (preferred_width_ == width) {
return;
}
preferred_width_ = width;
PreferredSizeChanged();
}
void SearchResultImageView::CreatePulsingBlockView() {
pulsing_block_view_ = AddChildView(std::make_unique<PulsingBlockView>(
size(), base::Milliseconds(index_ * 200), kRoundedCornerRadius));
pulsing_block_view_->SetCanProcessEventsWithinSubtree(false);
pulsing_block_view_->GetViewAccessibility().OverrideIsIgnored(true);
}
gfx::ImageSkia SearchResultImageView::CreateDragImage() {
const ui::Compositor* compositor = GetWidget()->GetCompositor();
const float scale = compositor->device_scale_factor();
const gfx::Rect paint_bounds(gfx::ScaleToCeiledSize(size(), scale));
const bool is_pixel_canvas = compositor->is_pixel_canvas();
SkBitmap bitmap;
bitmap.allocN32Pixels(paint_bounds.width(), paint_bounds.height());
bitmap.eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(bitmap);
auto list = base::MakeRefCounted<cc::DisplayItemList>();
ui::PaintContext context(list.get(), scale, paint_bounds, is_pixel_canvas);
result_image_->Paint(
views::PaintInfo::CreateRootPaintInfo(context, paint_bounds.size()));
list->Finalize();
list->Raster(&canvas, nullptr);
gfx::ImageSkia dragged_image =
gfx::ImageSkia::CreateFromBitmap(bitmap, scale);
return gfx::ImageSkiaOperations::CreateTransparentImage(dragged_image,
kDraggedImageOpacity);
}
void SearchResultImageView::OnMetadataChanged() {
UpdateAccessibleName();
// By default, the description will be set to the tooltip text, but the title
// is already announced in the accessible name.
SetAccessibleDescription(
u"", ax::mojom::DescriptionFrom::kAttributeExplicitlyEmpty);
if (!result() || result()->icon().icon.IsEmpty()) {
result_image_->SetVisible(false);
if (result() && !pulsing_block_view_) {
CreatePulsingBlockView();
}
return;
}
result_image_->SetVisible(true);
if (pulsing_block_view_) {
RemoveChildViewT(pulsing_block_view_.get());
pulsing_block_view_ = nullptr;
}
gfx::ImageSkia image = result()->icon().icon.Rasterize(GetColorProvider());
if (!GetContentsBounds().IsEmpty()) {
image = gfx::ImageSkiaOperations::CreateResizedImage(
image, skia::ImageOperations::RESIZE_BEST, GetContentsBounds().size());
}
result_image_->SetImage(views::Button::STATE_NORMAL, image);
SetTooltipText(result()->title());
}
SearchResultImageView::~SearchResultImageView() = default;
BEGIN_METADATA(SearchResultImageView, SearchResultBaseView)
END_METADATA
} // namespace ash
|
