1 /* 2 * Copyright (C) 2012 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 17 package com.android.test.hwui; 18 19 import android.animation.ObjectAnimator; 20 import android.animation.ValueAnimator; 21 import android.app.Activity; 22 import android.content.Context; 23 import android.graphics.Canvas; 24 import android.graphics.Color; 25 import android.graphics.Paint; 26 import android.os.Bundle; 27 import android.text.Spannable; 28 import android.text.SpannableStringBuilder; 29 import android.text.style.BackgroundColorSpan; 30 import android.text.style.ForegroundColorSpan; 31 import android.text.style.ImageSpan; 32 import android.text.style.SuggestionSpan; 33 import android.text.style.UnderlineSpan; 34 import android.view.View; 35 import android.widget.Button; 36 import android.widget.EditText; 37 import android.widget.LinearLayout; 38 import android.widget.TextView; 39 40 public class ViewPropertyAlphaActivity extends Activity { 41 42 MyView myViewAlphaDefault, myViewAlphaHandled; 43 44 @Override onCreate(Bundle savedInstanceState)45 protected void onCreate(Bundle savedInstanceState) { 46 super.onCreate(savedInstanceState); 47 48 setContentView(R.layout.view_properties); 49 50 getWindow().getDecorView().postDelayed(new Runnable() { 51 @Override 52 public void run() { 53 startAnim(R.id.button); 54 startAnim(R.id.textview); 55 startAnim(R.id.spantext); 56 startAnim(R.id.edittext); 57 startAnim(R.id.selectedtext); 58 startAnim(R.id.textviewbackground); 59 startAnim(R.id.layout); 60 startAnim(R.id.imageview); 61 startAnim(myViewAlphaDefault); 62 startAnim(myViewAlphaHandled); 63 EditText selectedText = (EditText) findViewById(R.id.selectedtext); 64 selectedText.setSelection(3, 8); 65 } 66 }, 2000); 67 68 Button invalidator = (Button) findViewById(R.id.invalidateButton); 69 invalidator.setOnClickListener(new View.OnClickListener() { 70 @Override 71 public void onClick(View v) { 72 findViewById(R.id.textview).invalidate(); 73 findViewById(R.id.spantext).invalidate(); 74 } 75 }); 76 77 TextView textView = (TextView) findViewById(R.id.spantext); 78 if (textView != null) { 79 SpannableStringBuilder text = 80 new SpannableStringBuilder("Now this is a short text message with spans"); 81 82 text.setSpan(new BackgroundColorSpan(Color.RED), 0, 3, 83 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 84 text.setSpan(new ForegroundColorSpan(Color.BLUE), 4, 9, 85 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 86 text.setSpan(new SuggestionSpan(this, new String[]{"longer"}, 3), 11, 16, 87 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 88 text.setSpan(new UnderlineSpan(), 17, 20, 89 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 90 text.setSpan(new ImageSpan(this, R.drawable.icon), 21, 22, 91 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 92 93 textView.setText(text); 94 } 95 96 LinearLayout container = (LinearLayout) findViewById(R.id.container); 97 myViewAlphaDefault = new MyView(this, false); 98 myViewAlphaDefault.setLayoutParams(new LinearLayout.LayoutParams(75, 75)); 99 container.addView(myViewAlphaDefault); 100 myViewAlphaHandled = new MyView(this, true); 101 myViewAlphaHandled.setLayoutParams(new LinearLayout.LayoutParams(75, 75)); 102 container.addView(myViewAlphaHandled); 103 } 104 startAnim(View target)105 private void startAnim(View target) { 106 ObjectAnimator anim = ObjectAnimator.ofFloat(target, View.ALPHA, 0); 107 anim.setRepeatCount(ValueAnimator.INFINITE); 108 anim.setRepeatMode(ValueAnimator.REVERSE); 109 anim.setDuration(1000); 110 anim.start(); 111 } startAnim(int id)112 private void startAnim(int id) { 113 startAnim(findViewById(id)); 114 } 115 116 private static class MyView extends View { 117 private int mMyAlpha = 255; 118 private boolean mHandleAlpha; 119 private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 120 MyView(Context context, boolean handleAlpha)121 private MyView(Context context, boolean handleAlpha) { 122 super(context); 123 mHandleAlpha = handleAlpha; 124 mPaint.setColor(Color.RED); 125 } 126 127 @Override onDraw(Canvas canvas)128 protected void onDraw(Canvas canvas) { 129 if (mHandleAlpha) { 130 mPaint.setAlpha(mMyAlpha); 131 } 132 canvas.drawCircle(30, 30, 30, mPaint); 133 } 134 135 @Override onSetAlpha(int alpha)136 protected boolean onSetAlpha(int alpha) { 137 if (mHandleAlpha) { 138 mMyAlpha = alpha; 139 return true; 140 } 141 return super.onSetAlpha(alpha); 142 } 143 } 144 145 } 146