thoerup/droidradar/RadarView.java

package dk.thoerup.droidradar;


import java.util.Date;
import java.util.List;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.location.Location;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

//public class RadarView extends View {
public class RadarView extends SurfaceView implements SurfaceHolder.Callback, Runnable, DroidLocator.DroidsLocatedListener {
        
        int angle = 0;
        Paint p = new Paint();
        Paint p2 = new Paint();
        Paint p3 = new Paint();
        
        SurfaceHolder surfaceHolder;
        int distanceBase = 500;
        
        String distanceText1;
        String distanceText2;
        String distanceText3;
        String distanceText4;
        
        float textWidth1;
        float textWidth2;
        float textWidth3;
        float textWidth4;
        
        String gpsText = "-";   
        Location currentLocation;
        
        int heading;
        String headingText = "-";
        

        int width; 
        int height; 
        int hcenter; 
        int vcenter; 
        

        boolean mRun = true;
        
        List<DroidBean> droidBeans;
        
        DroidLocator locator = new DroidLocator();

        long imei;
        
        //Thread t;
        
        public RadarView(Context context) {
                super(context);
                init();
        }

        
        public RadarView(Context context, AttributeSet attr) {
                super(context,attr);
                init();
        }
        
        public RadarView(Context context, AttributeSet attr, int defstyle) {
                super(context,attr, defstyle);
                init();
        }
        

        void init() {
                p.setColor(0xaa00aa00);//Dark green
                p.setStrokeWidth(2);
                p.setStyle(Paint.Style.STROKE);
                p.setAntiAlias(true);
                p.setTextSize(1);
                
                p2.setStrokeWidth(2);
                p2.setColor(0xff00cc00);//Dark green
                p2.setStyle(Paint.Style.STROKE);
                //p2.setAntiAlias(true);

                
                p3.setStrokeWidth(2);
                p3.setColor(0xff00cc00);//Dark green
                p3.setStyle(Paint.Style.FILL);          

                surfaceHolder = this.getHolder();
                surfaceHolder.addCallback(this);
                
                
                updateDistanceTexts();
        }
        
        protected void myDraw(Canvas canvas) {
        
                canvas.drawColor(0xff000000);
                canvas.drawLine(hcenter-5, vcenter-5, hcenter+5, vcenter+5, p);
                canvas.drawLine(hcenter-5, vcenter+5, hcenter+5, vcenter-5, p);
                canvas.drawCircle(hcenter, vcenter, 40, p);
                canvas.drawCircle(hcenter, vcenter, 80, p);
                canvas.drawCircle(hcenter, vcenter, 115, p);
                canvas.drawCircle(hcenter, vcenter, 150, p);
                
                canvas.drawText(distanceText1, (width-textWidth1)/2, vcenter+40+1, p3);
                canvas.drawText(distanceText2, (width-textWidth2)/2, vcenter+80+1, p3);
                canvas.drawText(distanceText3, (width-textWidth3)/2, vcenter+115+1, p3);
                canvas.drawText(distanceText4, (width-textWidth4)/2, vcenter+150+1, p3);

                
                final float lineLength = 150;
                angle -= 6;
                
                
                double base = (Math.sin(angle/360.0)*lineLength) + (float)hcenter;
                double height = (Math.cos(angle/360.0)*lineLength) + (float)vcenter;
                
                
                canvas.drawLine(hcenter, vcenter, (float)base, (float)height, p2);
                
                
                //left,top,right,bottom
                canvas.drawRoundRect( new RectF(20,360,180,400), 10, 10, p);
                canvas.drawLine(100, 360, 100, 400, p);
                
                canvas.drawLine(45, 380, 75, 380, p); // Minus
                canvas.drawLine(125, 380, 155, 380, p); // Plus
                canvas.drawLine(140, 365, 140, 395, p); // Plus

                // Gps status
                canvas.drawText("Gps accuracy", 10, 20,p3);
                canvas.drawText(gpsText, 10, 40, p3);
                
                // Heading
                canvas.drawText("Heading", 270, 20, p3);
                canvas.drawText(headingText, 280, 40, p3);
                                
                
                drawLocations(canvas);
        }


        @Override //surfaceholder.CallBack
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
                Log.i("surfacChaned()","-");
        }


        @Override
        public void surfaceCreated(SurfaceHolder holder) { //surfaceholder.CallBack
                Log.i("surfacCreated()","-");
                                
                width = this.getWidth();
                height = this.getHeight();
                hcenter = width / 2;
                vcenter = hcenter + 20;
                
                mRun = true;
                Thread drawThread = new Thread(this);
                
                drawThread.start();
                locator.setDroidsLocatedListener(this);
                locator.setContinue(true);
                Thread locatorThread = new Thread(locator);
                locatorThread.start();
        }


        @Override
        public void surfaceDestroyed(SurfaceHolder holder) { //surfaceholder.CallBack
                Log.i("surfacDestroyed()","-");
        mRun = false;
        locator.setContinue(false);
        }
        
    public void run() {
        while (mRun) {
            Canvas c = null;
            try {
                c = surfaceHolder.lockCanvas(null);
                synchronized (surfaceHolder) {
                    //if (mMode == STATE_RUNNING) 
                    //  updatePhysics();
                    myDraw(c);
                }
            } finally {
                // do this in a finally so that if an exception is thrown
                // during the above, we don't leave the Surface in an
                // inconsistent state
                if (c != null) {
                    surfaceHolder.unlockCanvasAndPost(c);
                }
            }
            try {
                Thread.sleep(20);
            } catch (InterruptedException e) {}
        }
        Log.i("RadarView", "Draw thread exiting");
    }

    
        @Override
        public boolean onTouchEvent(MotionEvent event) {
                float x = event.getX();
                float y = event.getY(); 
                Log.i("TouchEvent", "Coords: " + x + "," + y );
                if (x>25 && x<95 && y>360 && y<400) { //zoom out
                        Log.i("Button", "Zoom Out");
                        if (distanceBase < 16000) {
                                distanceBase *= 2;
                                updateDistanceTexts();
                        }
                }
                
                if (x>105 && x<175 && y>360 && y<400) {
                        Log.i("Button", "Zoom In"); // zoom in
                        if (distanceBase > 125) {
                                distanceBase /= 2;
                                updateDistanceTexts();
                        }
                }

        
                return false;
        }
        
        void updateDistanceTexts() {
                distanceText1 = formatLength(distanceBase);
                distanceText2 = formatLength(distanceBase*2);
                distanceText3 = formatLength(distanceBase*3);
                distanceText4 = formatLength(distanceBase*4);
                
                textWidth1 = textWidth(distanceText1);
                textWidth2 = textWidth(distanceText2);
                textWidth3 = textWidth(distanceText3);
                textWidth4 = textWidth(distanceText4);
                
        }
        
        float textWidth(String text) {
                float[] width = { 0.0f };
                p3.breakText(text, true, 200, width);
                return width[0];
                
        }
        
        String formatLength(int meters) {
                if (meters == 1500) //yuck, special cases !!!
                        return "1.5 km";
                
                if (meters>=1000)
                        return "" + (meters/1000) + " km";
                else
                        return "" + meters + " m";
        }
        
        void setCurrentLocation(Location loc) {
                currentLocation = loc;
                gpsText = formatLength( (int)loc.getAccuracy());
                
                locator.setCurrentLocation(loc);
                
        }
        
        void setHeading(int head) {
                heading = head;
                headingText = "" + head;
        }
        
        public void setImei(long imei) {
                this.imei = imei;
                locator.setImei(imei);
        }
        
        void drawLocations(Canvas canvas) {
                if (currentLocation != null && droidBeans != null) {
                        
                        for(DroidBean droid : droidBeans) {
                                drawLocation(canvas, droid);
                        }
                }
        }
        
        void drawLocation(Canvas canvas, DroidBean droid) {
                
                Location location = droid.getLocation();
                
                float bearing = currentLocation.bearingTo(location);
                float distance = currentLocation.distanceTo(location);
                
                //Log.e("Bearing to", ""+bearing);
                //Log.e("Distance to", ""+distance);
                
                bearing -= (float) heading;
                
                if (distance <= (distanceBase*4)) {
                        
                        //convert from degrees to radians
                        double bearingRad = Math.toRadians(bearing-90);
                        
                        double hypotenuse = (distance / (distanceBase*4.0)) * 150.0;
                        double vertCathesis = Math.sin(bearingRad)*hypotenuse;
                        double horzCathesis = Math.cos(bearingRad)*hypotenuse;
                        

                        //vertCathesis *= -1.0;
                        
                        vertCathesis += vcenter;
                        horzCathesis += hcenter;
                        
                        droid.setGuiX((int)horzCathesis);
                        droid.setGuiY((int)vertCathesis);
                        
                        canvas.drawCircle( (float)horzCathesis, (float)vertCathesis, 3, p3);
                        
                }
        }


        @Override
        public void onDroidsLocated() { //callback
                droidBeans = locator.getDroids();
                Log.i("RadarView", "OnDroidsLocated");
        }
        
}
1	torben	275	package dk.thoerup.droidradar;
2	torben	264
3
4	torben	277	import java.util.Date;
5			import java.util.List;
6
7	torben	264	import android.content.Context;
8			import android.graphics.Canvas;
9			import android.graphics.Paint;
10			import android.graphics.RectF;
11			import android.location.Location;
12			import android.util.AttributeSet;
13			import android.util.Log;
14			import android.view.MotionEvent;
15			import android.view.SurfaceHolder;
16			import android.view.SurfaceView;
17
18			//public class RadarView extends View {
19	torben	277	public class RadarView extends SurfaceView implements SurfaceHolder.Callback, Runnable, DroidLocator.DroidsLocatedListener {
20	torben	268
21	torben	264	int angle = 0;
22			Paint p = new Paint();
23			Paint p2 = new Paint();
24			Paint p3 = new Paint();
25
26			SurfaceHolder surfaceHolder;
27			int distanceBase = 500;
28
29			String distanceText1;
30			String distanceText2;
31			String distanceText3;
32			String distanceText4;
33
34			float textWidth1;
35			float textWidth2;
36			float textWidth3;
37			float textWidth4;
38
39			String gpsText = "-";
40			Location currentLocation;
41
42			int heading;
43			String headingText = "-";
44
45	torben	267
46			int width;
47			int height;
48			int hcenter;
49			int vcenter;
50	torben	264
51
52			boolean mRun = true;
53
54	torben	277	List<DroidBean> droidBeans;
55
56			DroidLocator locator = new DroidLocator();
57
58			long imei;
59
60	torben	281	//Thread t;
61	torben	264
62			public RadarView(Context context) {
63			super(context);
64			init();
65			}
66
67
68			public RadarView(Context context, AttributeSet attr) {
69			super(context,attr);
70			init();
71			}
72
73			public RadarView(Context context, AttributeSet attr, int defstyle) {
74			super(context,attr, defstyle);
75			init();
76			}
77
78
79			void init() {
80			p.setColor(0xaa00aa00);//Dark green
81			p.setStrokeWidth(2);
82			p.setStyle(Paint.Style.STROKE);
83			p.setAntiAlias(true);
84			p.setTextSize(1);
85
86			p2.setStrokeWidth(2);
87			p2.setColor(0xff00cc00);//Dark green
88			p2.setStyle(Paint.Style.STROKE);
89			//p2.setAntiAlias(true);
90
91
92			p3.setStrokeWidth(2);
93			p3.setColor(0xff00cc00);//Dark green
94			p3.setStyle(Paint.Style.FILL);
95
96			surfaceHolder = this.getHolder();
97			surfaceHolder.addCallback(this);
98
99
100			updateDistanceTexts();
101			}
102
103			protected void myDraw(Canvas canvas) {
104
105			canvas.drawColor(0xff000000);
106			canvas.drawLine(hcenter-5, vcenter-5, hcenter+5, vcenter+5, p);
107			canvas.drawLine(hcenter-5, vcenter+5, hcenter+5, vcenter-5, p);
108	torben	269	canvas.drawCircle(hcenter, vcenter, 40, p);
109			canvas.drawCircle(hcenter, vcenter, 80, p);
110			canvas.drawCircle(hcenter, vcenter, 115, p);
111			canvas.drawCircle(hcenter, vcenter, 150, p);
112	torben	264
113	torben	269	canvas.drawText(distanceText1, (width-textWidth1)/2, vcenter+40+1, p3);
114			canvas.drawText(distanceText2, (width-textWidth2)/2, vcenter+80+1, p3);
115			canvas.drawText(distanceText3, (width-textWidth3)/2, vcenter+115+1, p3);
116			canvas.drawText(distanceText4, (width-textWidth4)/2, vcenter+150+1, p3);
117	torben	264
118	torben	268
119	torben	264	final float lineLength = 150;
120			angle -= 6;
121
122
123			double base = (Math.sin(angle/360.0)*lineLength) + (float)hcenter;
124			double height = (Math.cos(angle/360.0)*lineLength) + (float)vcenter;
125
126
127			canvas.drawLine(hcenter, vcenter, (float)base, (float)height, p2);
128
129
130
131			//left,top,right,bottom
132			canvas.drawRoundRect( new RectF(20,360,180,400), 10, 10, p);
133			canvas.drawLine(100, 360, 100, 400, p);
134
135			canvas.drawLine(45, 380, 75, 380, p); // Minus
136			canvas.drawLine(125, 380, 155, 380, p); // Plus
137			canvas.drawLine(140, 365, 140, 395, p); // Plus
138
139			// Gps status
140			canvas.drawText("Gps accuracy", 10, 20,p3);
141			canvas.drawText(gpsText, 10, 40, p3);
142
143			// Heading
144			canvas.drawText("Heading", 270, 20, p3);
145			canvas.drawText(headingText, 280, 40, p3);
146
147
148			drawLocations(canvas);
149			}
150
151
152			@Override //surfaceholder.CallBack
153			public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
154			Log.i("surfacChaned()","-");
155			}
156
157
158			@Override
159			public void surfaceCreated(SurfaceHolder holder) { //surfaceholder.CallBack
160			Log.i("surfacCreated()","-");
161	torben	267
162			width = this.getWidth();
163			height = this.getHeight();
164			hcenter = width / 2;
165			vcenter = hcenter + 20;
166
167	torben	281	mRun = true;
168			Thread drawThread = new Thread(this);
169
170			drawThread.start();
171	torben	277	locator.setDroidsLocatedListener(this);
172	torben	281	locator.setContinue(true);
173	torben	277	Thread locatorThread = new Thread(locator);
174			locatorThread.start();
175	torben	264	}
176
177
178			@Override
179			public void surfaceDestroyed(SurfaceHolder holder) { //surfaceholder.CallBack
180			Log.i("surfacDestroyed()","-");
181			mRun = false;
182	torben	281	locator.setContinue(false);
183	torben	264	}
184
185			public void run() {
186			while (mRun) {
187			Canvas c = null;
188			try {
189			c = surfaceHolder.lockCanvas(null);
190			synchronized (surfaceHolder) {
191			//if (mMode == STATE_RUNNING)
192			// updatePhysics();
193			myDraw(c);
194			}
195			} finally {
196			// do this in a finally so that if an exception is thrown
197			// during the above, we don't leave the Surface in an
198			// inconsistent state
199			if (c != null) {
200			surfaceHolder.unlockCanvasAndPost(c);
201			}
202			}
203			try {
204			Thread.sleep(20);
205			} catch (InterruptedException e) {}
206			}
207	torben	281	Log.i("RadarView", "Draw thread exiting");
208	torben	264	}
209
210
211
212			@Override
213			public boolean onTouchEvent(MotionEvent event) {
214			float x = event.getX();
215			float y = event.getY();
216			Log.i("TouchEvent", "Coords: " + x + "," + y );
217			if (x>25 && x<95 && y>360 && y<400) { //zoom out
218			Log.i("Button", "Zoom Out");
219			if (distanceBase < 16000) {
220			distanceBase *= 2;
221			updateDistanceTexts();
222			}
223			}
224
225			if (x>105 && x<175 && y>360 && y<400) {
226			Log.i("Button", "Zoom In"); // zoom in
227			if (distanceBase > 125) {
228			distanceBase /= 2;
229			updateDistanceTexts();
230			}
231			}
232
233
234			return false;
235			}
236
237			void updateDistanceTexts() {
238			distanceText1 = formatLength(distanceBase);
239			distanceText2 = formatLength(distanceBase*2);
240			distanceText3 = formatLength(distanceBase*3);
241			distanceText4 = formatLength(distanceBase*4);
242
243			textWidth1 = textWidth(distanceText1);
244			textWidth2 = textWidth(distanceText2);
245			textWidth3 = textWidth(distanceText3);
246			textWidth4 = textWidth(distanceText4);
247
248			}
249
250			float textWidth(String text) {
251			float[] width = { 0.0f };
252			p3.breakText(text, true, 200, width);
253			return width[0];
254
255			}
256
257			String formatLength(int meters) {
258	torben	265	if (meters == 1500) //yuck, special cases !!!
259			return "1.5 km";
260
261	torben	264	if (meters>=1000)
262			return "" + (meters/1000) + " km";
263			else
264			return "" + meters + " m";
265			}
266
267			void setCurrentLocation(Location loc) {
268			currentLocation = loc;
269			gpsText = formatLength( (int)loc.getAccuracy());
270	torben	277
271			locator.setCurrentLocation(loc);
272
273	torben	264	}
274
275			void setHeading(int head) {
276			heading = head;
277			headingText = "" + head;
278			}
279
280	torben	277	public void setImei(long imei) {
281			this.imei = imei;
282			locator.setImei(imei);
283			}
284
285	torben	264	void drawLocations(Canvas canvas) {
286	torben	277	if (currentLocation != null && droidBeans != null) {
287	torben	264
288	torben	277	for(DroidBean droid : droidBeans) {
289			drawLocation(canvas, droid);
290			}
291	torben	264	}
292			}
293
294	torben	277	void drawLocation(Canvas canvas, DroidBean droid) {
295	torben	264
296	torben	277	Location location = droid.getLocation();
297
298	torben	264	float bearing = currentLocation.bearingTo(location);
299			float distance = currentLocation.distanceTo(location);
300
301			//Log.e("Bearing to", ""+bearing);
302			//Log.e("Distance to", ""+distance);
303
304			bearing -= (float) heading;
305
306			if (distance <= (distanceBase*4)) {
307
308			//convert from degrees to radians
309			double bearingRad = Math.toRadians(bearing-90);
310
311			double hypotenuse = (distance / (distanceBase4.0)) 150.0;
312			double vertCathesis = Math.sin(bearingRad)*hypotenuse;
313			double horzCathesis = Math.cos(bearingRad)*hypotenuse;
314	torben	268
315	torben	264
316			//vertCathesis *= -1.0;
317
318			vertCathesis += vcenter;
319			horzCathesis += hcenter;
320
321	torben	277	droid.setGuiX((int)horzCathesis);
322			droid.setGuiY((int)vertCathesis);
323
324	torben	264	canvas.drawCircle( (float)horzCathesis, (float)vertCathesis, 3, p3);
325
326			}
327			}
328	torben	277
329
330			@Override
331			public void onDroidsLocated() { //callback
332			droidBeans = locator.getDroids();
333			Log.i("RadarView", "OnDroidsLocated");
334			}
335	torben	264
336			}