1 /* 2 * Copyright (C) 2011 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 18 package com.android.test.hwui; 19 20 import android.app.Activity; 21 import android.content.Context; 22 import android.graphics.Canvas; 23 import android.graphics.Paint; 24 import android.os.Bundle; 25 import android.util.Log; 26 import android.view.Gravity; 27 import android.view.View; 28 import android.widget.Button; 29 import android.widget.LinearLayout; 30 31 import static android.view.View.LAYER_TYPE_HARDWARE; 32 import static android.view.View.LAYER_TYPE_SOFTWARE; 33 import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT; 34 35 @SuppressWarnings({"UnusedDeclaration"}) 36 public class DisplayListLayersActivity extends Activity { 37 private static final int VERTICAL_MARGIN = 12; 38 39 @Override onCreate(Bundle savedInstanceState)40 protected void onCreate(Bundle savedInstanceState) { 41 super.onCreate(savedInstanceState); 42 43 LinearLayout root = createContainer(); 44 addChild(root, new LayerView(this, 0xffff0000, LAYER_TYPE_HARDWARE, "hardware"), 45 WRAP_CONTENT, WRAP_CONTENT); 46 addChild(root, new LayerView(this, 0xff0000ff, LAYER_TYPE_SOFTWARE, "software"), 47 WRAP_CONTENT, WRAP_CONTENT); 48 addChild(root, createButton(root), WRAP_CONTENT, WRAP_CONTENT); 49 50 setContentView(root); 51 } 52 createButton(final LinearLayout root)53 private Button createButton(final LinearLayout root) { 54 Button button = new Button(this); 55 button.setText("Invalidate"); 56 button.setOnClickListener(new View.OnClickListener() { 57 @Override 58 public void onClick(View v) { 59 for (int i = 0; i < root.getChildCount(); i++) { 60 View child = root.getChildAt(i); 61 if (child != v) { 62 child.invalidate(); 63 } 64 } 65 } 66 }); 67 68 return button; 69 } 70 addChild(LinearLayout root, View child, int width, int height)71 private void addChild(LinearLayout root, View child, int width, int height) { 72 LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(width, height); 73 params.gravity = Gravity.CENTER_HORIZONTAL; 74 params.setMargins(0, dipToPx(VERTICAL_MARGIN), 0, 0); 75 root.addView(child, params); 76 } 77 dipToPx(int size)78 private int dipToPx(int size) { 79 return (int) (getResources().getDisplayMetrics().density * size + 0.5f); 80 } 81 createContainer()82 private LinearLayout createContainer() { 83 LinearLayout layout = new LinearLayout(this); 84 layout.setOrientation(LinearLayout.VERTICAL); 85 return layout; 86 } 87 88 private class LayerView extends View { 89 private static final String LOG_TAG = "LayerView"; 90 private final Paint mPaint = new Paint(); 91 92 private final String mTag; 93 LayerView(Context context, int color, int layerType, String tag)94 LayerView(Context context, int color, int layerType, String tag) { 95 super(context); 96 97 mTag = tag; 98 99 mPaint.setColor(color); 100 setLayerType(layerType, null); 101 } 102 log(String tag)103 private void log(String tag) { 104 Log.d(LOG_TAG, mTag + ": " + tag); 105 } 106 107 @Override invalidate()108 public void invalidate() { 109 log("invalidate"); 110 super.invalidate(); 111 } 112 113 @Override onDraw(Canvas canvas)114 protected void onDraw(Canvas canvas) { 115 log("draw"); 116 canvas.drawRect(0, 0, getWidth(), getHeight(), mPaint); 117 } 118 119 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)120 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 121 setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec) / 3, 122 MeasureSpec.getSize(heightMeasureSpec) / 3); 123 } 124 } 125 } 126