PlayControlsButton.java revision d41f0075a7d2ea826204e81fcec57d0aa57171a9 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.tv.menu;
18
19import android.R.integer;
20import android.animation.ValueAnimator;
21import android.content.Context;
22import android.text.TextUtils;
23import android.util.AttributeSet;
24import android.view.View;
25import android.widget.FrameLayout;
26import android.widget.ImageView;
27import android.widget.TextView;
28
29import com.android.tv.R;
30
31public class PlayControlsButton extends FrameLayout {
32    private static final float ALPHA_ENABLED = 1.0f;
33    private static final float ALPHA_DISABLED = 0.3f;
34
35    private final ImageView mButton;
36    private final ImageView mIcon;
37    private final TextView mLabel;
38    private final long mFocusAnimationTimeMs;
39    private final int mIconColor;
40    private int mIconFocusedColor;
41
42    public PlayControlsButton(Context context) {
43        this(context, null);
44    }
45
46    public PlayControlsButton(Context context, AttributeSet attrs) {
47        this(context, attrs, 0);
48    }
49
50    public PlayControlsButton(Context context, AttributeSet attrs, int defStyleAttr) {
51        this(context, attrs, defStyleAttr, 0);
52    }
53
54    public PlayControlsButton(Context context, AttributeSet attrs, int defStyleAttr,
55            int defStyleRes) {
56        super(context, attrs, defStyleAttr, defStyleRes);
57        inflate(context, R.layout.play_controls_button, this);
58        mButton = (ImageView) findViewById(R.id.button);
59        mIcon = (ImageView) findViewById(R.id.icon);
60        mLabel = (TextView) findViewById(R.id.label);
61        mFocusAnimationTimeMs = context.getResources().getInteger(integer.config_shortAnimTime);
62        mIconColor = context.getResources().getColor(R.color.play_controls_icon_color);
63        mIconFocusedColor = mIconColor;
64    }
65
66    /**
67     * Sets the resource ID of the image to be displayed in the center of this control.
68     */
69    public void setImageResId(int imageResId) {
70        mIcon.setImageResource(imageResId);
71        // Since on foucus changing, icons' color should be switched with animation,
72        // as a result, selectors cannot be used to switch colors in this case.
73        mIcon.getDrawable().setTint(hasFocus() ? mIconFocusedColor : mIconColor);
74    }
75
76    /**
77     * Sets an action which is to be run when the button is clicked.
78     */
79    public void setAction(final Runnable clickAction) {
80        mButton.setOnClickListener(new OnClickListener() {
81            @Override
82            public void onClick(View view) {
83                clickAction.run();
84            }
85        });
86    }
87
88    /**
89     * Sets the icon's color should change to when the button is on focus.
90     */
91    public void setFocusedIconColor(int color) {
92        final ValueAnimator valueAnimator = ValueAnimator.ofArgb(mIconColor, color);
93        valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
94            @Override
95            public void onAnimationUpdate(final ValueAnimator animator) {
96                mIcon.getDrawable().setTint((int) animator.getAnimatedValue());
97            }
98        });
99        valueAnimator.setDuration(mFocusAnimationTimeMs);
100        mButton.setOnFocusChangeListener(new View.OnFocusChangeListener() {
101            @Override
102            public void onFocusChange(View v, boolean hasFocus) {
103                if (hasFocus) {
104                    valueAnimator.start();
105                } else {
106                    valueAnimator.reverse();
107                }
108            }
109        });
110        mIconFocusedColor = color;
111    }
112
113    public void setLabel(String label) {
114        if (TextUtils.isEmpty(label)) {
115            mIcon.setVisibility(View.VISIBLE);
116            mLabel.setVisibility(View.GONE);
117        } else {
118            mIcon.setVisibility(View.GONE);
119            mLabel.setVisibility(View.VISIBLE);
120            mLabel.setText(label);
121        }
122    }
123
124    public void hideRippleAnimation() {
125        mButton.getDrawable().jumpToCurrentState();
126    }
127
128    @Override
129    public void setEnabled(boolean enabled) {
130        super.setEnabled(enabled);
131        mButton.setEnabled(enabled);
132        mButton.setFocusable(enabled);
133        mIcon.setEnabled(enabled);
134        mIcon.setAlpha(enabled ? ALPHA_ENABLED : ALPHA_DISABLED);
135        mLabel.setEnabled(enabled);
136    }
137}
138