src/com/savoirfairelinux/sflphone/fragments/CallFragment.java

/*
 *  Copyright (C) 2004-2013 Savoir-Faire Linux Inc.
 *
 *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  Additional permission under GNU GPL version 3 section 7:
 *
 *  If you modify this program, or any covered work, by linking or
 *  combining it with the OpenSSL project's OpenSSL library (or a
 *  modified version of that library), containing parts covered by the
 *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
 *  grants you additional permission to convey the resulting work.
 *  Corresponding Source for a non-source form of such a combination
 *  shall include the source code for the parts of OpenSSL used as well
 *  as that of the covered work.
 */

package com.savoirfairelinux.sflphone.fragments;

import java.util.HashMap;

import android.app.Activity;
import android.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PointF;
import android.os.Bundle;
import android.os.RemoteException;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.savoirfairelinux.sflphone.R;
import com.savoirfairelinux.sflphone.adapters.ContactPictureLoader;
import com.savoirfairelinux.sflphone.model.Attractor;
import com.savoirfairelinux.sflphone.model.Bubble;
import com.savoirfairelinux.sflphone.model.BubbleModel;
import com.savoirfairelinux.sflphone.model.BubblesView;
import com.savoirfairelinux.sflphone.model.CallContact;
import com.savoirfairelinux.sflphone.model.SipCall;
import com.savoirfairelinux.sflphone.service.ISipService;

public class CallFragment extends Fragment implements Callback {

    static final String TAG = "CallFragment";

    static final float BUBBLE_SIZE = 75;
    static final float ATTRACTOR_SIZE = 40;

    private SipCall mCall;

    private TextView callStatusTxt;
    private BubblesView view;
    private BubbleModel model;

    private Callbacks mCallbacks = sDummyCallbacks;

    private HashMap<CallContact, Bubble> contacts = new HashMap<CallContact, Bubble>();

    private CallContact myself;

    private Bitmap hangup_icon;
    private Bitmap call_icon;

    @Override
    public void onCreate(Bundle savedBundle) {
        super.onCreate(savedBundle);
        model = new BubbleModel(getResources().getDisplayMetrics().density);
        Bundle b = getArguments();

        mCall = b.getParcelable("CallInfo");

    }

    /**
     * A dummy implementation of the {@link Callbacks} interface that does nothing. Used only when this fragment is not attached to an activity.
     */
    private static Callbacks sDummyCallbacks = new Callbacks() {
        @Override
        public void onSendMessage(SipCall call, String msg) {
        }

        @Override
        public void callContact(SipCall call) {
        }

        @Override
        public void onCallAccepted(SipCall call) {
        }

        @Override
        public void onCallRejected(SipCall call) {
        }

        @Override
        public void onCallEnded(SipCall call) {
        }

        @Override
        public void onCallSuspended(SipCall call) {
        }

        @Override
        public void onCallResumed(SipCall call) {
        }

        @Override
        public void onCalltransfered(SipCall call, String to) {
        }

        @Override
        public void onRecordCall(SipCall call) {
        }

        @Override
        public ISipService getService() {
            return null;
        }
    };
    
    /**
     * The Activity calling this fragment has to implement this interface
     * 
     */
    public interface Callbacks {

        public ISipService getService();

        public void callContact(SipCall call);

        public void onCallAccepted(SipCall call);

        public void onCallRejected(SipCall call);

        public void onCallEnded(SipCall call);

        public void onCallSuspended(SipCall call);

        public void onCallResumed(SipCall call);

        public void onCalltransfered(SipCall call, String to);

        public void onRecordCall(SipCall call);

        public void onSendMessage(SipCall call, String msg);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        if (!(activity instanceof Callbacks)) {
            throw new IllegalStateException("Activity must implement fragment's callbacks.");
        }

        // rootView.requestDisallowInterceptTouchEvent(true);

        mCallbacks = (Callbacks) activity;
        myself = CallContact.ContactBuilder.buildUserContact(activity.getContentResolver(), "");

    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallbacks = sDummyCallbacks;
        // rootView.requestDisallowInterceptTouchEvent(false);
    }
    
    @Override
    public void onStop(){
        super.onStop();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.frag_call, container, false);

        view = (BubblesView) rootView.findViewById(R.id.main_view);
        view.setModel(model);
        view.getHolder().addCallback(this);

        callStatusTxt = (TextView) rootView.findViewById(R.id.call_status_txt);

        hangup_icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_hangup);
        call_icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_call);

        // Do nothing here, the view is not initialized yet.
        return rootView;
    }

    private void initNormalStateDisplay() {
        Log.i(TAG, "Start normal display");

        callStatusTxt.setText("0 min");

        int radiusCalls = model.width / 2 - 150;
        int angle_part = 360 / mCall.getContacts().size();
        double dX = 0;
        double dY = 0;

        getBubbleFor(myself, model.width / 2, model.height / 2);
        for (int i = 0; i < mCall.getContacts().size(); ++i) {
            dX = Math.cos(Math.toRadians(angle_part * i)) * radiusCalls;
            dY = Math.sin(Math.toRadians(angle_part * i)) * radiusCalls;
            
            getBubbleFor(mCall.getContacts().get(i),(int) (model.width / 2 + dX), (int) (model.height / 2 + dY));
        }

        model.clearAttractors();
        model.addAttractor(new Attractor(new PointF(model.width / 2, model.height * .8f), ATTRACTOR_SIZE, new Attractor.Callback() {
            @Override
            public boolean onBubbleSucked(Bubble b) {
                Log.w(TAG, "Bubble sucked ! ");
                mCallbacks.onCallEnded(mCall);
                bubbleRemoved(b);
                return true;
            }
        }, hangup_icon));

    }

    private void initIncomingCallDisplay() {
        Log.i(TAG, "Start incoming display");

        callStatusTxt.setText("Incomming call");

        Bubble contact_bubble = getBubbleFor(mCall.getContacts().get(0), model.width / 2, model.height / 2);
        contacts.put(mCall.getContacts().get(0), contact_bubble);

        model.clearAttractors();
        model.addAttractor(new Attractor(new PointF(4 * model.width / 5, model.height / 2), ATTRACTOR_SIZE, new Attractor.Callback() {
            @Override
            public boolean onBubbleSucked(Bubble b) {
                mCallbacks.onCallAccepted(mCall);
                return false;
            }
        }, call_icon));
        model.addAttractor(new Attractor(new PointF(model.width / 5, model.height / 2), ATTRACTOR_SIZE, new Attractor.Callback() {
            @Override
            public boolean onBubbleSucked(Bubble b) {
                mCallbacks.onCallRejected(mCall);
                bubbleRemoved(b);
                return true;
            }
        }, hangup_icon));
    }

    private void initOutGoingCallDisplay() {
        Log.i(TAG, "Start outgoing display");

        callStatusTxt.setText("Calling...");

        // TODO off-thread image loading
        getBubbleFor(mCall.getContacts().get(0), model.width / 2, model.height / 3);
        getBubbleFor(myself, model.width / 2, model.height / 2);

        model.clearAttractors();
        model.addAttractor(new Attractor(new PointF(model.width / 2, model.height * .8f), 40, new Attractor.Callback() {
            @Override
            public boolean onBubbleSucked(Bubble b) {
                Log.w(TAG, "Bubble sucked ! ");
                mCallbacks.onCallEnded(mCall);
                bubbleRemoved(b);
                return true;
            }
        }, hangup_icon));
    }

    /**
     * Retrieves or create a bubble for a given contact. If the bubble exists, it is moved to the new location.
     * 
     * @param contact
     *            The contact
     * @param x
     *            Initial or new x position.
     * @param y
     *            Initial or new y position.
     * @return Bubble corresponding to the contact.
     */
    private Bubble getBubbleFor(CallContact contact, float x, float y) {
        Bubble contact_bubble = contacts.get(contact);
        if (contact_bubble != null) {
            contact_bubble.attractor.set(x, y);
            return contact_bubble;
        }

        // TODO off-thread image loading
        if (contact.getPhoto_id() > 0) {
            Bitmap photo = ContactPictureLoader.loadContactPhoto(getActivity().getContentResolver(), contact.getId());
            contact_bubble = new Bubble(x, y, BUBBLE_SIZE, photo);
        } else {
            contact_bubble = new Bubble(x, y, BUBBLE_SIZE, getActivity(), R.drawable.ic_contact_picture);
        }
        contact_bubble.contact = contact;

        model.addBubble(contact_bubble);
        contacts.put(contact, contact_bubble);

        return contact_bubble;
    }

    /**
     * Should be called when a bubble is removed from the model
     */
    void bubbleRemoved(Bubble b) {
        if (b.contact == null) {
            return;
        }

        contacts.remove(b.contact);
    }

    public void changeCallState(String callID, String newState) {

        Log.w(TAG, "Changing call state of " + callID);
        mCall.printCallInfo();
        if (!callID.equals(mCall.getCallId()))
            return;

        mCall.setCallState(newState);
        if (mCall.isOngoing()) {
            initNormalStateDisplay();
        }
    }

    public boolean draggingBubble() {
        return view == null ? false : view.isDraggingBubble();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        Log.i(TAG, "Init fragment " + mCall.getCallId());

        mCall.printCallInfo();

        if (mCall.isIncoming() && mCall.isRinging()) {
            initIncomingCallDisplay();
        } else {
            if (mCall.isRinging()) {
                initOutGoingCallDisplay();
            }
            try {
                if (mCall.isOutGoing() && mCallbacks.getService().getCall(mCall.getCallId()) == null) {
                    mCallbacks.getService().placeCall(mCall);
                    initOutGoingCallDisplay();
                } else if (mCall.isOutGoing() && mCall.isRinging()) {
                    initOutGoingCallDisplay();
                }
            } catch (RemoteException e) {
                Log.e(TAG, e.toString());
            }
        }

        if (mCall.isOngoing()) {
            initNormalStateDisplay();
        }

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
    }

    public BubblesView getBubbleView() {
        return view;

    }

}