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7ba38011
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Leszek Koltunski
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.examples.aroundtheworld;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.SurfaceHolder;
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import android.view.SurfaceView;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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class AroundTheWorldSurfaceViewPicker extends SurfaceView implements SurfaceHolder.Callback
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{
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private static final int FRAME_INTERVAL = 70;
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private boolean refreshScreen = true;
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private boolean mFinishedBooting=false;
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private int scrWidth, scrHeight;
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private GraphicsThread mThread;
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private int mX, mY;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private class GraphicsThread extends Thread
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{
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private SurfaceHolder mSurfaceHolder;
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private AroundTheWorldSurfaceViewPicker mPicker;
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private boolean mRun = false;
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/////////////////////////////////////////////////////////////////////////////////////
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GraphicsThread(SurfaceHolder surfaceHolder, AroundTheWorldSurfaceViewPicker p)
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{
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mSurfaceHolder = surfaceHolder;
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mPicker = p;
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}
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/////////////////////////////////////////////////////////////////////////////////////
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void setRunning(boolean run)
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{
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mRun = run;
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}
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/////////////////////////////////////////////////////////////////////////////////////
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public void run()
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{
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Canvas c;
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long time;
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while (mRun)
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{
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c = null;
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time = 0;
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if( refreshScreen && mFinishedBooting )
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{
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refreshScreen=false;
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time = System.currentTimeMillis();
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try
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{
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c = mSurfaceHolder.lockCanvas(null);
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synchronized (mSurfaceHolder) { mPicker.draw(c); }
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}
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finally
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{
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if (c != null) mSurfaceHolder.unlockCanvasAndPost(c);
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}
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time = System.currentTimeMillis() -time;
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}
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if( time<FRAME_INTERVAL )
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{
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try { Thread.sleep(FRAME_INTERVAL-time); }
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catch(InterruptedException ex) {}
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}
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public AroundTheWorldSurfaceViewPicker(Context c, AttributeSet attrs)
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{
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super(c, attrs);
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mX = -100;
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mY = -100;
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getHolder().addCallback(this);
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setFocusable(true);
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setFocusableInTouchMode(true);
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mFinishedBooting=true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void surfaceCreated(SurfaceHolder holder)
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{
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android.util.Log.e( "Picker", "surfaceCreated");
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mThread = new GraphicsThread(getHolder(), this);
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mThread.setRunning(true);
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mThread.start();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void surfaceChanged(SurfaceHolder holder, int format, int w, int h)
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{
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android.util.Log.e( "Picker", "surfaceChanged: width="+w+" height="+h);
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scrWidth = w;
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scrHeight= h;
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refreshScreen = true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void surfaceDestroyed(SurfaceHolder holder)
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{
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android.util.Log.e( "Picker", "surfaceDestroyed");
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stopThread();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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private void stopThread()
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{
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if( mThread!=null )
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{
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boolean retry = true;
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mThread.setRunning(false);
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while (retry)
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{
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try
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{
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mThread.join();
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retry = false;
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}
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catch (InterruptedException e) { android.util.Log.e( "Picker", "Joining thread interrupted!"); }
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}
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mThread=null;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void draw(Canvas c)
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{
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if( c!=null )
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{
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void setRepaint()
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{
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refreshScreen=true;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public boolean onTouchEvent(MotionEvent event)
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{
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mX = (int)event.getX();
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mY = (int)event.getY();
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android.util.Log.e( "Picker", "onTouchEvent: x="+mX+" y="+mY);
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setRepaint();
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return true;
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}
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}
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