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
|
/*
* Copyright (C) 2017 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.badge;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import com.android.launcher3.graphics.IconPalette;
/**
* Contains parameters necessary to draw a badge for an icon (e.g. the size of the badge).
* @see BadgeInfo for the data to draw
*/
public class BadgeRenderer {
public int size;
public int textSize;
private final RectF mBackgroundRect = new RectF();
private final Paint mBackgroundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final Paint mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private final int mTextHeight;
public BadgeRenderer(int size, int textSize) {
this.size = size;
this.textSize = textSize;
mTextPaint.setTextAlign(Paint.Align.CENTER);
mTextPaint.setTextSize(textSize);
// Measure the text height.
Rect temp = new Rect();
mTextPaint.getTextBounds("0", 0, 1, temp);
mTextHeight = temp.height();
}
/**
* Draw a circle in the top right corner of the given bounds, and draw
* {@link BadgeInfo#getNotificationCount()} on top of the circle.
* @param palette The colors (based on the icon) to use for the badge.
* @param badgeInfo Contains data to draw on the badge.
* @param iconBounds The bounds of the icon being badged.
*/
public void draw(Canvas canvas, IconPalette palette, BadgeInfo badgeInfo, Rect iconBounds) {
mBackgroundPaint.setColor(palette.backgroundColor);
mTextPaint.setColor(palette.textColor);
mBackgroundRect.set(iconBounds.right - size, iconBounds.top, iconBounds.right,
iconBounds.top + size);
canvas.drawOval(mBackgroundRect, mBackgroundPaint);
String notificationCount = String.valueOf(badgeInfo.getNotificationCount());
canvas.drawText(notificationCount,
mBackgroundRect.centerX(),
mBackgroundRect.centerY() + mTextHeight / 2,
mTextPaint);
}
}
|
