| /* |
| * Copyright (C) 2011 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.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.os.Bundle; |
| import android.util.Log; |
| import android.view.Gravity; |
| import android.view.View; |
| import android.widget.Button; |
| import android.widget.LinearLayout; |
| |
| import static android.view.View.LAYER_TYPE_HARDWARE; |
| import static android.view.View.LAYER_TYPE_SOFTWARE; |
| import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT; |
| |
| @SuppressWarnings({"UnusedDeclaration"}) |
| public class DisplayListLayersActivity extends Activity { |
| private static final int VERTICAL_MARGIN = 12; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| LinearLayout root = createContainer(); |
| addChild(root, new LayerView(this, 0xffff0000, LAYER_TYPE_HARDWARE, "hardware"), |
| WRAP_CONTENT, WRAP_CONTENT); |
| addChild(root, new LayerView(this, 0xff0000ff, LAYER_TYPE_SOFTWARE, "software"), |
| WRAP_CONTENT, WRAP_CONTENT); |
| addChild(root, createButton(root), WRAP_CONTENT, WRAP_CONTENT); |
| |
| setContentView(root); |
| } |
| |
| private Button createButton(final LinearLayout root) { |
| Button button = new Button(this); |
| button.setText("Invalidate"); |
| button.setOnClickListener(new View.OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| for (int i = 0; i < root.getChildCount(); i++) { |
| View child = root.getChildAt(i); |
| if (child != v) { |
| child.invalidate(); |
| } |
| } |
| } |
| }); |
| |
| return button; |
| } |
| |
| private void addChild(LinearLayout root, View child, int width, int height) { |
| LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(width, height); |
| params.gravity = Gravity.CENTER_HORIZONTAL; |
| params.setMargins(0, dipToPx(VERTICAL_MARGIN), 0, 0); |
| root.addView(child, params); |
| } |
| |
| private int dipToPx(int size) { |
| return (int) (getResources().getDisplayMetrics().density * size + 0.5f); |
| } |
| |
| private LinearLayout createContainer() { |
| LinearLayout layout = new LinearLayout(this); |
| layout.setOrientation(LinearLayout.VERTICAL); |
| return layout; |
| } |
| |
| private class LayerView extends View { |
| private static final String LOG_TAG = "LayerView"; |
| private final Paint mPaint = new Paint(); |
| |
| private final String mTag; |
| |
| LayerView(Context context, int color, int layerType, String tag) { |
| super(context); |
| |
| mTag = tag; |
| |
| mPaint.setColor(color); |
| setLayerType(layerType, null); |
| } |
| |
| private void log(String tag) { |
| Log.d(LOG_TAG, mTag + ": " + tag); |
| } |
| |
| @Override |
| public void invalidate() { |
| log("invalidate"); |
| super.invalidate(); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| log("draw"); |
| canvas.drawRect(0, 0, getWidth(), getHeight(), mPaint); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec) / 3, |
| MeasureSpec.getSize(heightMeasureSpec) / 3); |
| } |
| } |
| } |