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
|
// 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 "content/browser/android/composited_touch_handle_drawable.h"
#include "base/debug/trace_event.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "cc/layers/ui_resource_layer.h"
#include "jni/HandleViewResources_jni.h"
#include "ui/gfx/android/java_bitmap.h"
namespace content {
namespace {
static SkBitmap CreateSkBitmapFromJavaBitmap(
base::android::ScopedJavaLocalRef<jobject> jbitmap) {
return jbitmap.is_null()
? SkBitmap()
: CreateSkBitmapFromJavaBitmap(gfx::JavaBitmap(jbitmap.obj()));
}
class HandleResources {
public:
HandleResources() : loaded_(false) {
}
void LoadIfNecessary(jobject context) {
if (loaded_)
return;
loaded_ = true;
TRACE_EVENT0("browser", "HandleResources::Create");
JNIEnv* env = base::android::AttachCurrentThread();
if (!context)
context = base::android::GetApplicationContext();
left_bitmap_ = CreateSkBitmapFromJavaBitmap(
Java_HandleViewResources_getLeftHandleBitmap(env, context));
right_bitmap_ = CreateSkBitmapFromJavaBitmap(
Java_HandleViewResources_getRightHandleBitmap(env, context));
center_bitmap_ = CreateSkBitmapFromJavaBitmap(
Java_HandleViewResources_getCenterHandleBitmap(env, context));
left_bitmap_.setImmutable();
right_bitmap_.setImmutable();
center_bitmap_.setImmutable();
}
const SkBitmap& GetBitmap(ui::TouchHandleOrientation orientation) {
DCHECK(loaded_);
switch (orientation) {
case ui::TOUCH_HANDLE_LEFT:
return left_bitmap_;
case ui::TOUCH_HANDLE_RIGHT:
return right_bitmap_;
case ui::TOUCH_HANDLE_CENTER:
return center_bitmap_;
case ui::TOUCH_HANDLE_ORIENTATION_UNDEFINED:
NOTREACHED() << "Invalid touch handle orientation.";
};
return center_bitmap_;
}
private:
SkBitmap left_bitmap_;
SkBitmap right_bitmap_;
SkBitmap center_bitmap_;
bool loaded_;
DISALLOW_COPY_AND_ASSIGN(HandleResources);
};
base::LazyInstance<HandleResources>::Leaky g_selection_resources;
} // namespace
CompositedTouchHandleDrawable::CompositedTouchHandleDrawable(
cc::Layer* root_layer,
float dpi_scale,
jobject context)
: dpi_scale_(dpi_scale),
orientation_(ui::TOUCH_HANDLE_ORIENTATION_UNDEFINED),
layer_(cc::UIResourceLayer::Create()) {
g_selection_resources.Get().LoadIfNecessary(context);
DCHECK(root_layer);
root_layer->AddChild(layer_.get());
}
CompositedTouchHandleDrawable::~CompositedTouchHandleDrawable() {
Detach();
}
void CompositedTouchHandleDrawable::SetEnabled(bool enabled) {
layer_->SetIsDrawable(enabled);
}
void CompositedTouchHandleDrawable::SetOrientation(
ui::TouchHandleOrientation orientation) {
DCHECK(layer_->parent());
orientation_ = orientation;
const SkBitmap& bitmap = g_selection_resources.Get().GetBitmap(orientation);
layer_->SetBitmap(bitmap);
layer_->SetBounds(gfx::Size(bitmap.width(), bitmap.height()));
switch (orientation_) {
case ui::TOUCH_HANDLE_LEFT:
focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.75f, 0);
break;
case ui::TOUCH_HANDLE_RIGHT:
focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.25f, 0);
break;
case ui::TOUCH_HANDLE_CENTER:
focal_offset_from_origin_ = gfx::Vector2dF(bitmap.width() * 0.5f, 0);
break;
case ui::TOUCH_HANDLE_ORIENTATION_UNDEFINED:
NOTREACHED() << "Invalid touch handle orientation.";
break;
};
layer_->SetPosition(focal_position_ - focal_offset_from_origin_);
}
void CompositedTouchHandleDrawable::SetAlpha(float alpha) {
DCHECK(layer_->parent());
alpha = std::max(0.f, std::min(1.f, alpha));
bool hidden = alpha <= 0;
layer_->SetOpacity(alpha);
layer_->SetHideLayerAndSubtree(hidden);
}
void CompositedTouchHandleDrawable::SetFocus(const gfx::PointF& position) {
DCHECK(layer_->parent());
focal_position_ = gfx::ScalePoint(position, dpi_scale_);
layer_->SetPosition(focal_position_ - focal_offset_from_origin_);
}
gfx::RectF CompositedTouchHandleDrawable::GetVisibleBounds() const {
return gfx::ScaleRect(gfx::RectF(layer_->position().x(),
layer_->position().y(),
layer_->bounds().width(),
layer_->bounds().height()),
1.f / dpi_scale_);
}
void CompositedTouchHandleDrawable::Detach() {
layer_->RemoveFromParent();
}
// static
bool CompositedTouchHandleDrawable::RegisterHandleViewResources(JNIEnv* env) {
return RegisterNativesImpl(env);
}
} // namespace content
|
