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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.dreams.basic;
import android.graphics.SurfaceTexture;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.util.Log;
import android.view.TextureView;
import android.view.View;
import cyanogenmod.externalviews.KeyguardExternalViewProviderService;
/**
* Plays a delightful show of colors.
* <p>
* This dream performs its rendering using OpenGL on a separate rendering thread.
* </p>
*/
public class ColorsLockScreen extends KeyguardExternalViewProviderService {
static final String TAG = ColorsLockScreen.class.getSimpleName();
static final boolean DEBUG = false;
public static void LOG(String fmt, Object... args) {
if (!DEBUG) return;
Log.v(TAG, String.format(fmt, args));
}
@Override
protected Provider createExternalView(Bundle options) {
return new ProviderImpl(options);
}
private class ProviderImpl extends Provider implements TextureView.SurfaceTextureListener {
private TextureView mTextureView;
// The handler thread and handler on which the GL renderer is running.
private HandlerThread mRendererHandlerThread;
private Handler mRendererHandler;
// The current GL renderer, or null if the dream is not running.
private ColorsGLRenderer mRenderer;
protected ProviderImpl(Bundle options) {
super(options);
}
@Override
protected View onCreateView() {
mTextureView = new TextureView(ColorsLockScreen.this);
mTextureView.setSurfaceTextureListener(this);
return mTextureView;
}
@Override
protected void onKeyguardShowing(boolean screenOn) {
resumeRendering();
}
@Override
protected void onKeyguardDismissed() {
pauseRendering();
}
@Override
protected void onBouncerShowing(boolean showing) {
}
@Override
protected void onScreenTurnedOn() {
resumeRendering();
}
@Override
protected void onScreenTurnedOff() {
pauseRendering();
}
@Override
public void onSurfaceTextureAvailable(final SurfaceTexture surface,
final int width, final int height) {
LOG("onSurfaceTextureAvailable(%s, %d, %d)", surface, width, height);
if (mRendererHandlerThread == null) {
mRendererHandlerThread = new HandlerThread(TAG);
mRendererHandlerThread.start();
mRendererHandler = new Handler(mRendererHandlerThread.getLooper());
}
mRendererHandler.post(new Runnable() {
@Override
public void run() {
if (mRenderer != null) {
mRenderer.stop();
}
mRenderer = new ColorsGLRenderer(surface, width, height, 1 / 3000f);
mRenderer.start();
}
});
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface,
final int width, final int height) {
LOG("onSurfaceTextureSizeChanged(%s, %d, %d)", surface, width, height);
mRendererHandler.post(new Runnable() {
@Override
public void run() {
if (mRenderer != null) {
mRenderer.setSize(width, height);
}
}
});
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
LOG("onSurfaceTextureDestroyed(%s)", surface);
mRendererHandler.post(new Runnable() {
@Override
public void run() {
if (mRenderer != null) {
mRenderer.stop();
mRenderer = null;
}
mRendererHandlerThread.quit();
mRendererHandlerThread = null;
}
});
try {
if (mRendererHandlerThread != null) mRendererHandlerThread.join();
} catch (InterruptedException e) {
LOG("Error while waiting for renderer", e);
}
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
LOG("onSurfaceTextureUpdated(%s)", surface);
}
private void pauseRendering() {
if (mRenderer != null) {
mRendererHandler.post(new Runnable() {
@Override
public void run() {
mRenderer.pause();
}
});
}
}
private void resumeRendering() {
if (mRenderer != null) {
mRendererHandler.post(new Runnable() {
@Override
public void run() {
mRenderer.resume();
}
});
}
}
}
}
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