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);
                
                t = new Thread(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;
                
                t.start();
                locator.setDroidsLocatedListener(this);
                Thread locatorThread = new Thread(locator);
                locatorThread.start();
        }


        @Override
        public void surfaceDestroyed(SurfaceHolder holder) { //surfaceholder.CallBack
                Log.i("surfacDestroyed()","-");
        mRun = false;
        locator.stop();
        }
        
    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) {}
        }
    }

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