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
|
// Copyright 2014 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 "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/thread_task_runner_handle.h"
#include "chrome/browser/android/thumbnail/thumbnail.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "ui/android/resources/ui_resource_provider.h"
#include "ui/gfx/geometry/size_conversions.h"
namespace {
SkBitmap CreateSmallHolderBitmap() {
SkBitmap small_bitmap;
SkCanvas canvas(small_bitmap);
small_bitmap.allocPixels(
SkImageInfo::Make(1, 1, kRGBA_8888_SkColorType, kOpaque_SkAlphaType));
canvas.drawColor(SK_ColorWHITE);
small_bitmap.setImmutable();
return small_bitmap;
}
} // anonymous namespace
scoped_ptr<Thumbnail> Thumbnail::Create(
TabId tab_id,
const base::Time& time_stamp,
float scale,
ui::UIResourceProvider* ui_resource_provider,
ThumbnailDelegate* thumbnail_delegate) {
return make_scoped_ptr(new Thumbnail(
tab_id, time_stamp, scale, ui_resource_provider, thumbnail_delegate));
}
Thumbnail::Thumbnail(TabId tab_id,
const base::Time& time_stamp,
float scale,
ui::UIResourceProvider* ui_resource_provider,
ThumbnailDelegate* thumbnail_delegate)
: tab_id_(tab_id),
time_stamp_(time_stamp),
scale_(scale),
bitmap_(gfx::Size(1, 1), true),
ui_resource_id_(0),
retrieved_(false),
ui_resource_provider_(ui_resource_provider),
thumbnail_delegate_(thumbnail_delegate),
weak_factory_(this) {
}
Thumbnail::~Thumbnail() {
ClearUIResourceId();
}
void Thumbnail::SetBitmap(const SkBitmap& bitmap) {
DCHECK(!bitmap.empty());
retrieved_ = false;
ClearUIResourceId();
scaled_content_size_ =
gfx::ScaleSize(gfx::SizeF(bitmap.width(), bitmap.height()), 1.f / scale_);
scaled_data_size_ = scaled_content_size_;
bitmap_ = cc::UIResourceBitmap(bitmap);
}
void Thumbnail::SetCompressedBitmap(skia::RefPtr<SkPixelRef> compressed_bitmap,
const gfx::Size& content_size) {
DCHECK(compressed_bitmap);
DCHECK(!content_size.IsEmpty());
retrieved_ = false;
ClearUIResourceId();
gfx::Size data_size(compressed_bitmap->info().width(),
compressed_bitmap->info().height());
scaled_content_size_ = gfx::ScaleSize(gfx::SizeF(content_size), 1.f / scale_);
scaled_data_size_ = gfx::ScaleSize(gfx::SizeF(data_size), 1.f / scale_);
bitmap_ = cc::UIResourceBitmap(compressed_bitmap, data_size);
}
void Thumbnail::CreateUIResource() {
DCHECK(ui_resource_provider_);
if (!ui_resource_id_)
ui_resource_id_ = ui_resource_provider_->CreateUIResource(this);
}
cc::UIResourceBitmap Thumbnail::GetBitmap(cc::UIResourceId uid,
bool resource_lost) {
if (retrieved_) {
// InvalidateCachedThumbnail() causes |this| to be deleted, so
// don't delete the resource while LayerTeeHost calls into |this|
// to avoid reentry there.
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::Bind(&Thumbnail::DoInvalidate, weak_factory_.GetWeakPtr()));
return bitmap_;
}
retrieved_ = true;
cc::UIResourceBitmap old_bitmap(bitmap_);
// Return a place holder for all other calls to GetBitmap.
bitmap_ = cc::UIResourceBitmap(CreateSmallHolderBitmap());
return old_bitmap;
}
void Thumbnail::DoInvalidate() {
if (thumbnail_delegate_)
thumbnail_delegate_->InvalidateCachedThumbnail(this);
}
void Thumbnail::ClearUIResourceId() {
if (ui_resource_id_ && ui_resource_provider_)
ui_resource_provider_->DeleteUIResource(ui_resource_id_);
ui_resource_id_ = 0;
}
|
