// Copyright 2019 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. package org.chromium.webview_shell; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.WindowManager; import android.webkit.WebView; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; /** * Activity to exercise transform animations on WebView. */ public class WebViewAnimationTestActivity extends Activity { private static final String HTML = "" + " " + " " + " " + " " + "

" + "

" + " " + ""; private WebView mWebView; private boolean mIsWindowHardwareAccelerated; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_webview_animation_test); mWebView = (WebView) findViewById(R.id.webview); mIsWindowHardwareAccelerated = (getWindow().getAttributes().flags | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED) != 0; mWebView.setBackgroundColor(0); mWebView.loadDataWithBaseURL("http://foo.bar", HTML, "text/html", null, "http://foo.bar"); OnClickListener onClickListner = (View v) -> { switch (v.getId()) { case R.id.translate: runTranslate(); break; case R.id.scale: runScale(); break; case R.id.rotate: runRotate(); break; } }; findViewById(R.id.scale).setOnClickListener(onClickListner); findViewById(R.id.translate).setOnClickListener(onClickListner); findViewById(R.id.rotate).setOnClickListener(onClickListner); ((SeekBar) findViewById(R.id.view_alpha)) .setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar view, int progress, boolean fromUser) { switch (view.getId()) { case R.id.view_alpha: mWebView.setAlpha(progress / 100f); break; } } @Override public void onStartTrackingTouch(SeekBar seekBar) {} @Override public void onStopTrackingTouch(SeekBar seekBar) {} }); CheckBox checkBox = ((CheckBox) findViewById(R.id.use_layer)); checkBox.setOnCheckedChangeListener( (CompoundButton arg0, boolean checked) -> { setWebViewLayer(checked); }); setWebViewLayer(checkBox.isChecked()); } private void runTranslate() { if (mWebView.getTranslationX() == 0f) { mWebView.animate().translationX(100f).translationY(100f); } else { mWebView.animate().translationX(0f).translationY(0f); } } private void runScale() { if (mWebView.getScaleX() == 1f) { mWebView.animate().scaleX(.5f).scaleY(.5f); } else { mWebView.animate().scaleX(1f).scaleY(1f); } } private void runRotate() { if (mWebView.getRotationX() == 0f) { mWebView.animate().rotationX(45f).rotationY(45f).rotation(90f); } else { mWebView.animate().rotationX(0f).rotationY(0f).rotation(0f); } } private void setWebViewLayer(boolean isOnLayer) { if (isOnLayer) { mWebView.setLayerType(mIsWindowHardwareAccelerated ? View.LAYER_TYPE_HARDWARE : View.LAYER_TYPE_SOFTWARE, null); } else { mWebView.setLayerType(View.LAYER_TYPE_NONE, null); } } }