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
|
/*
* Copyright (C) 2014 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.example.android.renderscriptintrinsic;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.StateListDrawable;
import android.graphics.drawable.shapes.RectShape;
import android.os.Build;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.RadioButton;
/**
* A button with Thumbnail which extends Radio Button.
*
* <p>The widget override a background drawable of Radio Button with a StateList Drawable. Each
* state has a LayerDrawable with a Thumbnail image and a Focus rectangle. It's using original
* Radio Buttons text as a label, because LayerDrawable showed some issues with
* Canvas.drawText().</p>
*/
public class ThumbnailRadioButton extends RadioButton {
public ThumbnailRadioButton(Context context) {
super(context);
init();
}
public ThumbnailRadioButton(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public ThumbnailRadioButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
setButtonDrawable(android.R.color.transparent);
}
public void setThumbnail(Bitmap bitmap) {
// Bitmap drawable
BitmapDrawable bmp = new BitmapDrawable(getResources(), bitmap);
bmp.setGravity(Gravity.CENTER);
int strokeWidth = 24;
// Checked state
ShapeDrawable rectChecked = new ShapeDrawable(new RectShape());
rectChecked.getPaint().setColor(0xFFFFFFFF);
rectChecked.getPaint().setStyle(Paint.Style.STROKE);
rectChecked.getPaint().setStrokeWidth(strokeWidth);
rectChecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
rectChecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
Drawable drawableArray[] = new Drawable[]{bmp, rectChecked};
LayerDrawable layerChecked = new LayerDrawable(drawableArray);
// Unchecked state
ShapeDrawable rectUnchecked = new ShapeDrawable(new RectShape());
rectUnchecked.getPaint().setColor(0x0);
rectUnchecked.getPaint().setStyle(Paint.Style.STROKE);
rectUnchecked.getPaint().setStrokeWidth(strokeWidth);
rectUnchecked.setIntrinsicWidth(bitmap.getWidth() + strokeWidth);
rectUnchecked.setIntrinsicHeight(bitmap.getHeight() + strokeWidth);
Drawable drawableArray2[] = new Drawable[]{bmp, rectUnchecked};
LayerDrawable layerUnchecked = new LayerDrawable(drawableArray2);
// StateList drawable
StateListDrawable states = new StateListDrawable();
states.addState(new int[]{android.R.attr.state_checked},
layerChecked);
states.addState(new int[]{},
layerUnchecked);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
setBackground(states);
} else {
//noinspection deprecation
setBackgroundDrawable(states);
}
//Offset text to center/bottom of the checkbox
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTextSize(getTextSize());
paint.setTypeface(getTypeface());
float w = paint.measureText(getText(), 0, getText().length());
setPadding(getPaddingLeft() + (int) ((bitmap.getWidth() - w) / 2.f + .5f),
getPaddingTop() + (int) (bitmap.getHeight() * 0.70),
getPaddingRight(),
getPaddingBottom());
setShadowLayer(5, 0, 0, Color.BLACK);
}
}
|
