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
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3.views;
import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_CONTROLS;
import static android.view.accessibility.AccessibilityManager.FLAG_CONTENT_TEXT;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.MotionEvent;
import android.widget.TextView;
import com.android.launcher3.AbstractFloatingView;
import com.android.launcher3.Launcher;
import com.android.launcher3.R;
import com.android.launcher3.anim.Interpolators;
import com.android.launcher3.compat.AccessibilityManagerCompat;
import com.android.launcher3.dragndrop.DragLayer;
/**
* A toast-like UI at the bottom of the screen with a label, button action, and dismiss action.
*/
public class Snackbar extends AbstractFloatingView {
private static final long SHOW_DURATION_MS = 180;
private static final long HIDE_DURATION_MS = 180;
private static final int TIMEOUT_DURATION_MS = 4000;
private final Launcher mLauncher;
private Runnable mOnDismissed;
public Snackbar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public Snackbar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mLauncher = Launcher.getLauncher(context);
inflate(context, R.layout.snackbar, this);
}
public static void show(Launcher launcher, int labelStringResId, int actionStringResId,
Runnable onDismissed, Runnable onActionClicked) {
closeOpenViews(launcher, true, TYPE_SNACKBAR);
Snackbar snackbar = new Snackbar(launcher, null);
// Set some properties here since inflated xml only contains the children.
snackbar.setOrientation(HORIZONTAL);
snackbar.setGravity(Gravity.CENTER_VERTICAL);
Resources res = launcher.getResources();
snackbar.setElevation(res.getDimension(R.dimen.snackbar_elevation));
int padding = res.getDimensionPixelSize(R.dimen.snackbar_padding);
snackbar.setPadding(padding, padding, padding, padding);
snackbar.setBackgroundResource(R.drawable.round_rect_primary);
snackbar.mIsOpen = true;
DragLayer dragLayer = launcher.getDragLayer();
dragLayer.addView(snackbar);
DragLayer.LayoutParams params = (DragLayer.LayoutParams) snackbar.getLayoutParams();
params.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
params.height = res.getDimensionPixelSize(R.dimen.snackbar_height);
int maxMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_max_margin_left_right);
int minMarginLeftRight = res.getDimensionPixelSize(R.dimen.snackbar_min_margin_left_right);
int marginBottom = res.getDimensionPixelSize(R.dimen.snackbar_margin_bottom);
Rect insets = launcher.getDeviceProfile().getInsets();
int maxWidth = dragLayer.getWidth() - minMarginLeftRight * 2 - insets.left - insets.right;
int minWidth = dragLayer.getWidth() - maxMarginLeftRight * 2 - insets.left - insets.right;
params.width = minWidth;
params.setMargins(0, 0, 0, marginBottom + insets.bottom);
TextView labelView = snackbar.findViewById(R.id.label);
TextView actionView = snackbar.findViewById(R.id.action);
String labelText = res.getString(labelStringResId);
String actionText = res.getString(actionStringResId);
int totalContentWidth = (int) (labelView.getPaint().measureText(labelText)
+ actionView.getPaint().measureText(actionText))
+ labelView.getPaddingRight() + labelView.getPaddingLeft()
+ actionView.getPaddingRight() + actionView.getPaddingLeft()
+ padding * 2;
if (totalContentWidth > params.width) {
// The text doesn't fit in our standard width so update width to accommodate.
if (totalContentWidth <= maxWidth) {
params.width = totalContentWidth;
} else {
// One line will be cut off, fallback to 2 lines and smaller font. (This should only
// happen in some languages if system display and font size are set to largest.)
int textHeight = res.getDimensionPixelSize(R.dimen.snackbar_content_height);
float textSizePx = res.getDimension(R.dimen.snackbar_min_text_size);
labelView.setLines(2);
labelView.getLayoutParams().height = textHeight * 2;
actionView.getLayoutParams().height = textHeight * 2;
labelView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
actionView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSizePx);
params.height += textHeight;
params.width = maxWidth;
}
}
labelView.setText(labelText);
actionView.setText(actionText);
actionView.setOnClickListener(v -> {
if (onActionClicked != null) {
onActionClicked.run();
}
snackbar.mOnDismissed = null;
snackbar.close(true);
});
snackbar.mOnDismissed = onDismissed;
snackbar.setAlpha(0);
snackbar.setScaleX(0.8f);
snackbar.setScaleY(0.8f);
snackbar.animate()
.alpha(1f)
.withLayer()
.scaleX(1)
.scaleY(1)
.setDuration(SHOW_DURATION_MS)
.setInterpolator(Interpolators.ACCEL_DEACCEL)
.start();
int timeout = AccessibilityManagerCompat.getRecommendedTimeoutMillis(launcher,
TIMEOUT_DURATION_MS, FLAG_CONTENT_TEXT | FLAG_CONTENT_CONTROLS);
snackbar.postDelayed(() -> snackbar.close(true), timeout);
}
@Override
protected void handleClose(boolean animate) {
if (mIsOpen) {
if (animate) {
animate().alpha(0f)
.withLayer()
.setStartDelay(0)
.setDuration(HIDE_DURATION_MS)
.setInterpolator(Interpolators.ACCEL)
.withEndAction(this::onClosed)
.start();
} else {
animate().cancel();
onClosed();
}
mIsOpen = false;
}
}
private void onClosed() {
mLauncher.getDragLayer().removeView(this);
if (mOnDismissed != null) {
mOnDismissed.run();
}
}
@Override
public void logActionCommand(int command) {
// TODO
}
@Override
protected boolean isOfType(int type) {
return (type & TYPE_SNACKBAR) != 0;
}
@Override
public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
DragLayer dl = mLauncher.getDragLayer();
if (!dl.isEventOverView(this, ev)) {
close(true);
}
}
return false;
}
}
|
