Optimization of alpha with DisplayList properties
Some views (such as ImageView and TextView) handle non-opaque alpha
values directly. This was originally an optimization, but we can handle it faster
in many cases without this optimization when DisplayList properties are enabled.
Basically, if a view has non-overlapping rendering, we set the alpha value directly
on the renderer (the equivalent of setting it on the Paint object) and draw each
primitive with that alpha value. Doing it this way avoids re-creating DisplayLists
while getting the same speedup that onSetAlpha() used to get pre-DisplayList properties.
Change-Id: I0f7827f075d3b35093a882d4adbb300a1063c288
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index f4c0841..ceda610 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -657,5 +657,14 @@
</intent-filter>
</activity>
+ <activity
+ android:name="ViewPropertyAlphaActivity"
+ android:label="_ViewPropAlpha">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+
</application>
</manifest>
diff --git a/tests/HwAccelerationTest/res/layout/view_properties.xml b/tests/HwAccelerationTest/res/layout/view_properties.xml
new file mode 100644
index 0000000..d7ed8192
--- /dev/null
+++ b/tests/HwAccelerationTest/res/layout/view_properties.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:layout_width="fill_parent"
+ android:layout_height="fill_parent"
+ android:id="@+id/container">
+ <Button
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Invalidate"
+ android:id="@+id/invalidateButton"/>
+ <Button
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Button"
+ android:id="@+id/button"/>
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Some text"
+ android:id="@+id/textview"/>
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:id="@+id/spantext"/>
+ <EditText
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Edit text"
+ android:id="@+id/edittext"/>
+ <EditText
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Selected text"
+ android:id="@+id/selectedtext"/>
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Some text"
+ android:background="#00ff00"
+ android:id="@+id/textviewbackground"/>
+ <ImageView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:src="@drawable/icon"
+ android:id="@+id/imageview"/>
+ <LinearLayout
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:orientation="horizontal"
+ android:id="@+id/layout">
+ <Button
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Button"/>
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Some text"/>
+ <TextView
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:text="Some text"
+ android:background="#00ff00"/>
+ </LinearLayout>
+</LinearLayout>
\ No newline at end of file
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/ViewPropertyAlphaActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/ViewPropertyAlphaActivity.java
new file mode 100644
index 0000000..738801d
--- /dev/null
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/ViewPropertyAlphaActivity.java
@@ -0,0 +1,145 @@
+/*
+ * 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);
+ }
+ }
+
+}