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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.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
public class ViewLayerInvalidationActivity extends Activity {
int currentColor = Color.WHITE;
boolean nestedLayersOn = false;
ArrayList<LinearLayout> linearLayouts = new ArrayList<LinearLayout>();
ArrayList<LinearLayout> topLayouts = new ArrayList<LinearLayout>();
ArrayList<TextView> textViews = new ArrayList<TextView>();
LinearLayout container = null;
boolean randomInvalidates = false;
TextView nestedStatusTV, invalidateStatusTV;
static final String NO_NESTING = "Nested Layer: NO ";
static final String NESTING = "Nested Layers: YES ";
static final String NO_INVALIDATING = "Random Invalidating: NO ";
static final String INVALIDATING = "Random Invalidating: YES ";
static final int TEXT_COLOR_INTERVAL = 400;
static final int INVALIDATING_INTERVAL = 1000;
static final int NESTING_INTERVAL = 2000;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_layer_invalidation);
container = (LinearLayout) findViewById(R.id.container);
final LinearLayout container1 = (LinearLayout) findViewById(R.id.container1);
final LinearLayout container2 = (LinearLayout) findViewById(R.id.container2);
final LinearLayout container3 = (LinearLayout) findViewById(R.id.container3);
nestedStatusTV = (TextView) findViewById(R.id.nestedStatus);
invalidateStatusTV = (TextView) findViewById(R.id.invalidateStatus);
final TextView tva = (TextView) findViewById(R.id.textviewa);
topLayouts.add(container1);
topLayouts.add(container2);
topLayouts.add(container3);
collectLinearLayouts(container);
collectTextViews(container);
nestedStatusTV.setText(NO_NESTING);
invalidateStatusTV.setText(NO_INVALIDATING);
tva.setLayerType(View.LAYER_TYPE_HARDWARE, null);
container1.setLayerType(View.LAYER_TYPE_HARDWARE, null);
container2.setLayerType(View.LAYER_TYPE_HARDWARE, null);
container3.setLayerType(View.LAYER_TYPE_HARDWARE, null);
container.postDelayed(textColorSetter, TEXT_COLOR_INTERVAL);
container.postDelayed(nestedLayerSetter, NESTING_INTERVAL);
container.postDelayed(randomInvalidatesSetter, INVALIDATING_INTERVAL);
}
private Runnable textColorSetter = new Runnable() {
@Override
public void run() {
currentColor = (currentColor == Color.WHITE) ? Color.RED : Color.WHITE;
for (TextView tv : textViews) {
tv.setTextColor(currentColor);
}
if (randomInvalidates) {
randomInvalidator(container);
}
container.postDelayed(textColorSetter, TEXT_COLOR_INTERVAL);
}
};
private Runnable randomInvalidatesSetter = new Runnable() {
@Override
public void run() {
randomInvalidates = !randomInvalidates;
invalidateStatusTV.setText(randomInvalidates ? INVALIDATING : NO_INVALIDATING);
container.postDelayed(randomInvalidatesSetter, INVALIDATING_INTERVAL);
}
};
private Runnable nestedLayerSetter = new Runnable() {
@Override
public void run() {
nestedLayersOn = !nestedLayersOn;
nestedStatusTV.setText(nestedLayersOn ? NESTING : NO_NESTING);
for (LinearLayout layout : linearLayouts) {
layout.setLayerType(nestedLayersOn ?
View.LAYER_TYPE_HARDWARE : View.LAYER_TYPE_NONE, null);
}
if (!nestedLayersOn) {
for (LinearLayout layout : topLayouts) {
layout.setLayerType(View.LAYER_TYPE_HARDWARE, null);
}
}
container.postDelayed(nestedLayerSetter, NESTING_INTERVAL);
}
};
/**
* Invalidates views based on random chance (50%). This is meant to test
* invalidating several items in the hierarchy at the same time, which can cause artifacts
* if our invalidation-propagation logic is not sound.
*/
private void randomInvalidator(ViewGroup parent) {
for (int i = 0; i < parent.getChildCount(); ++i) {
View child = parent.getChildAt(i);
if (Math.random() < .5) {
child.invalidate();
}
if (child instanceof ViewGroup) {
randomInvalidator((ViewGroup) child);
}
}
}
private void collectLinearLayouts(View view) {
if (!(view instanceof LinearLayout)) {
return;
}
LinearLayout parent = (LinearLayout) view;
linearLayouts.add(parent);
for (int i = 0; i < parent.getChildCount(); ++i) {
collectLinearLayouts(parent.getChildAt(i));
}
}
private void collectTextViews(View view) {
if (view instanceof TextView) {
textViews.add((TextView) view);
return;
}
if (!(view instanceof ViewGroup)) {
return;
}
ViewGroup parent = (ViewGroup) view;
for (int i = 0; i < parent.getChildCount(); ++i) {
collectTextViews(parent.getChildAt(i));
}
}
}
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