PlayControlsButton.java revision 95961816a768da387f0b5523cf4363ace2044089 
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;
28import com.android.tv.R;
29
30public class PlayControlsButton extends FrameLayout {
31    private static final float ALPHA_ENABLED = 1.0f;
32    private static final float ALPHA_DISABLED = 0.3f;
33
34    private final ImageView mButton;
35    private final ImageView mIcon;
36    private final TextView mLabel;
37    private final long mFocusAnimationTimeMs;
38    private final int mIconColor;
39    private int mIconFocusedColor;
40
41    private int mImageResourceId;
42    private int mTintColor;
43
44    public PlayControlsButton(Context context) {
45        this(context, null);
46    }
47
48    public PlayControlsButton(Context context, AttributeSet attrs) {
49        this(context, attrs, 0);
50    }
51
52    public PlayControlsButton(Context context, AttributeSet attrs, int defStyleAttr) {
53        this(context, attrs, defStyleAttr, 0);
54    }
55
56    public PlayControlsButton(
57            Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
58        super(context, attrs, defStyleAttr, defStyleRes);
59        inflate(context, R.layout.play_controls_button, this);
60        mButton = (ImageView) findViewById(R.id.button);
61        mIcon = (ImageView) findViewById(R.id.icon);
62        mLabel = (TextView) findViewById(R.id.label);
63        mFocusAnimationTimeMs = context.getResources().getInteger(integer.config_shortAnimTime);
64        mIconColor = context.getResources().getColor(R.color.play_controls_icon_color);
65        mIconFocusedColor = mIconColor;
66    }
67
68    /** Sets the resource ID of the image to be displayed in the center of this control. */
69    public void setImageResId(int imageResId) {
70        int newTintColor = hasFocus() ? mIconFocusedColor : mIconColor;
71        if (mImageResourceId != imageResId) {
72            mImageResourceId = imageResId;
73            mIcon.setImageResource(imageResId);
74            updateTint(newTintColor);
75        } else if (newTintColor != mTintColor) {
76            updateTint(newTintColor);
77        }
78    }
79
80    private void updateTint(int tintColor) {
81        mTintColor = tintColor;
82        // Since on focus changing, icons' color should be switched with animation,
83        // as a result, selectors cannot be used to switch colors in this case.
84        mIcon.getDrawable().setTint(tintColor);
85    }
86
87    /** Sets an action which is to be run when the button is clicked. */
88    public void setAction(final Runnable clickAction) {
89        mButton.setOnClickListener(
90                new OnClickListener() {
91                    @Override
92                    public void onClick(View view) {
93                        clickAction.run();
94                    }
95                });
96    }
97
98    /** Sets the icon's color should change to when the button is on focus. */
99    public void setFocusedIconColor(int color) {
100        final ValueAnimator valueAnimator = ValueAnimator.ofArgb(mIconColor, color);
101        valueAnimator.addUpdateListener(
102                new ValueAnimator.AnimatorUpdateListener() {
103                    @Override
104                    public void onAnimationUpdate(final ValueAnimator animator) {
105                        mIcon.getDrawable().setTint((int) animator.getAnimatedValue());
106                    }
107                });
108        valueAnimator.setDuration(mFocusAnimationTimeMs);
109        mButton.setOnFocusChangeListener(
110                new View.OnFocusChangeListener() {
111                    @Override
112                    public void onFocusChange(View v, boolean hasFocus) {
113                        if (hasFocus) {
114                            valueAnimator.start();
115                        } else {
116                            valueAnimator.reverse();
117                        }
118                    }
119                });
120        mIconFocusedColor = color;
121    }
122
123    public void setLabel(String label) {
124        if (TextUtils.isEmpty(label)) {
125            mIcon.setVisibility(View.VISIBLE);
126            mLabel.setVisibility(View.GONE);
127        } else {
128            mIcon.setVisibility(View.GONE);
129            mLabel.setVisibility(View.VISIBLE);
130            if (!TextUtils.equals(mLabel.getText(), label)) {
131                mLabel.setText(label);
132            }
133        }
134    }
135
136    public void hideRippleAnimation() {
137        mButton.getDrawable().jumpToCurrentState();
138    }
139
140    @Override
141    public void setEnabled(boolean enabled) {
142        super.setEnabled(enabled);
143        mButton.setEnabled(enabled);
144        mButton.setFocusable(enabled);
145        mIcon.setEnabled(enabled);
146        mIcon.setAlpha(enabled ? ALPHA_ENABLED : ALPHA_DISABLED);
147        mLabel.setEnabled(enabled);
148    }
149}
150