1 package android.support.v17.leanback.widget; 2 3 import android.content.Context; 4 import android.content.res.Resources; 5 import android.graphics.Color; 6 import android.support.v17.leanback.R; 7 import android.util.AttributeSet; 8 9 /** 10 * A subclass of {@link SearchOrbView} that visualizes the state of an ongoing speech recognition. 11 */ 12 public class SpeechOrbView extends SearchOrbView { 13 private final float mSoundLevelMaxZoom; 14 private final Colors mListeningOrbColors; 15 private final Colors mNotListeningOrbColors; 16 17 private int mCurrentLevel = 0; 18 private boolean mListening = false; 19 SpeechOrbView(Context context)20 public SpeechOrbView(Context context) { 21 this(context, null); 22 } 23 SpeechOrbView(Context context, AttributeSet attrs)24 public SpeechOrbView(Context context, AttributeSet attrs) { 25 this(context, attrs, 0); 26 } 27 SpeechOrbView(Context context, AttributeSet attrs, int defStyle)28 public SpeechOrbView(Context context, AttributeSet attrs, int defStyle) { 29 super(context, attrs, defStyle); 30 31 Resources resources = context.getResources(); 32 mSoundLevelMaxZoom = 33 resources.getFraction(R.fraction.lb_search_bar_speech_orb_max_level_zoom, 1, 1); 34 35 mNotListeningOrbColors = new Colors(resources.getColor(R.color.lb_speech_orb_not_recording), 36 resources.getColor(R.color.lb_speech_orb_not_recording_pulsed), 37 resources.getColor(R.color.lb_speech_orb_not_recording_icon)); 38 mListeningOrbColors = new Colors(resources.getColor(R.color.lb_speech_orb_recording), 39 resources.getColor(R.color.lb_speech_orb_recording), 40 Color.TRANSPARENT); 41 42 showNotListening(); 43 } 44 45 @Override getLayoutResourceId()46 int getLayoutResourceId() { 47 return R.layout.lb_speech_orb; 48 } 49 50 /** 51 * Sets the view to display listening state. 52 */ showListening()53 public void showListening() { 54 setOrbColors(mListeningOrbColors); 55 setOrbIcon(getResources().getDrawable(R.drawable.lb_ic_search_mic)); 56 // Assume focused 57 animateOnFocus(true); 58 enableOrbColorAnimation(false); 59 scaleOrbViewOnly(1f); 60 mCurrentLevel = 0; 61 mListening = true; 62 } 63 64 /** 65 * Sets the view to display the not-listening state. 66 */ showNotListening()67 public void showNotListening() { 68 setOrbColors(mNotListeningOrbColors); 69 setOrbIcon(getResources().getDrawable(R.drawable.lb_ic_search_mic_out)); 70 animateOnFocus(hasFocus()); 71 scaleOrbViewOnly(1f); 72 mListening = false; 73 } 74 75 /** 76 * Sets the sound level while listening to speech. 77 */ setSoundLevel(int level)78 public void setSoundLevel(int level) { 79 if (!mListening) return; 80 81 // Either ease towards the target level, or decay away from it depending on whether 82 // its higher or lower than the current. 83 if (level > mCurrentLevel) { 84 mCurrentLevel = mCurrentLevel + ((level - mCurrentLevel) / 2); 85 } else { 86 mCurrentLevel = (int) (mCurrentLevel * 0.7f); 87 } 88 89 float zoom = 1f + (mSoundLevelMaxZoom - getFocusedZoom()) * mCurrentLevel / 100; 90 91 scaleOrbViewOnly(zoom); 92 } 93 } 94