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/*
* Copyright (C) 2012 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.android.test.hwui;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.BackgroundColorSpan;
import android.text.style.ForegroundColorSpan;
import android.text.style.ImageSpan;
import android.text.style.SuggestionSpan;
import android.text.style.UnderlineSpan;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
public class ViewPropertyAlphaActivity extends Activity {
MyView myViewAlphaDefault, myViewAlphaHandled;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_properties);
getWindow().getDecorView().postDelayed(new Runnable() {
@Override
public void run() {
startAnim(R.id.button);
startAnim(R.id.textview);
startAnim(R.id.spantext);
startAnim(R.id.edittext);
startAnim(R.id.selectedtext);
startAnim(R.id.textviewbackground);
startAnim(R.id.layout);
startAnim(R.id.imageview);
startAnim(myViewAlphaDefault);
startAnim(myViewAlphaHandled);
EditText selectedText = (EditText) findViewById(R.id.selectedtext);
selectedText.setSelection(3, 8);
}
}, 2000);
Button invalidator = (Button) findViewById(R.id.invalidateButton);
invalidator.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
findViewById(R.id.textview).invalidate();
findViewById(R.id.spantext).invalidate();
}
});
TextView textView = (TextView) findViewById(R.id.spantext);
if (textView != null) {
SpannableStringBuilder text =
new SpannableStringBuilder("Now this is a short text message with spans");
text.setSpan(new BackgroundColorSpan(Color.RED), 0, 3,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new ForegroundColorSpan(Color.BLUE), 4, 9,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new SuggestionSpan(this, new String[]{"longer"}, 3), 11, 16,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new UnderlineSpan(), 17, 20,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(new ImageSpan(this, R.drawable.icon), 21, 22,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
textView.setText(text);
}
LinearLayout container = (LinearLayout) findViewById(R.id.container);
myViewAlphaDefault = new MyView(this, false);
myViewAlphaDefault.setLayoutParams(new LinearLayout.LayoutParams(75, 75));
container.addView(myViewAlphaDefault);
myViewAlphaHandled = new MyView(this, true);
myViewAlphaHandled.setLayoutParams(new LinearLayout.LayoutParams(75, 75));
container.addView(myViewAlphaHandled);
}
private void startAnim(View target) {
ObjectAnimator anim = ObjectAnimator.ofFloat(target, View.ALPHA, 0);
anim.setRepeatCount(ValueAnimator.INFINITE);
anim.setRepeatMode(ValueAnimator.REVERSE);
anim.setDuration(1000);
anim.start();
}
private void startAnim(int id) {
startAnim(findViewById(id));
}
private static class MyView extends View {
private int mMyAlpha = 255;
private boolean mHandleAlpha;
private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private MyView(Context context, boolean handleAlpha) {
super(context);
mHandleAlpha = handleAlpha;
mPaint.setColor(Color.RED);
}
@Override
protected void onDraw(Canvas canvas) {
if (mHandleAlpha) {
mPaint.setAlpha(mMyAlpha);
}
canvas.drawCircle(30, 30, 30, mPaint);
}
@Override
protected boolean onSetAlpha(int alpha) {
if (mHandleAlpha) {
mMyAlpha = alpha;
return true;
}
return super.onSetAlpha(alpha);
}
}
}
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