Android Open Source - ingress-key-counter Portal View

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Back to project page ingress-key-counter.

License

The source code is released under:

MIT License

Java Source Code

package de.lehrbaum.keycounter;
// w  w w. j ava  2  s . c  o m
import java.util.List;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.SubMenu;
import android.view.View;
import android.view.View.OnLongClickListener;
import android.widget.TextView;

public class PortalView extends TextView implements
  MenuItem.OnMenuItemClickListener, OnLongClickListener {
  
  @SuppressWarnings("unused")
  private static final String TAG = PortalView.class
    .getCanonicalName();
  
  private Portal portal;
  /*rectangles used for showing the number of keys
   * All of the same size positioned just to the right
   * side of the previous one.
   */
  private Rect[] rects;
  private Paint lgreen, dgreen, red;//colors for the painting
  private boolean longClick;//true if there has been a long click
  private MenuInflater inflater;
  private CounterListAdapter listAdapter;
  
  public PortalView(final Context context, final AttributeSet attrs) {
    super(context, attrs);
  }
  
  public PortalView(final Context context, final AttributeSet attrs,
    final int defStyle) {
    super(context, attrs, defStyle);
  }
  
  public Portal getPortal() {
    return portal;
  }
  
  public void init(final Portal portal, final MenuInflater inflater,
    final CounterListAdapter listAdapter) {
    this.portal = portal;
    setText(portal.getName());
    this.inflater = inflater;
    this.listAdapter = listAdapter;
  }
  
  @Override
  protected void onCreateContextMenu(final ContextMenu menu) {
    //showing the context menu with the delete button
    inflater.inflate(R.menu.menu_element, menu);
    
    MenuItem item = menu.findItem(R.id.delete);
    item.setOnMenuItemClickListener(this);
    
    SubMenu copyMenu = menu.addSubMenu(Menu.NONE, Menu.NONE,
      Menu.NONE, android.R.string.copy);
    List<Category> cats = new DatabaseHandler(getContext())
      .getCategories();
    for (Category c : cats) {
      item = copyMenu.add(R.id.group_cats, c.getId(), Menu.NONE,
        c.getName());
      item.setOnMenuItemClickListener(this);
    }
    super.onCreateContextMenu(menu);
  }
  
  @Override
  protected void onDraw(final Canvas canvas) {
    //draw this portal view. Visualize the number of keys by coloring the rectangles.
    //    Log.d(PortalView.TAG, "onDraw called");
    for (int i = 0; i < portal.getKeyCount(); i++)
      canvas.drawRect(rects[i], i % 2 == 0 ? lgreen : dgreen);
    for (int i = portal.getKeyCount(); i < MainFragment.MAX_KEYS; i++)
      canvas.drawRect(rects[i], red);
    super.onDraw(canvas);
  }
  
  @Override
  protected void onFinishInflate() {
    //initialize the stuff used for painting. This will save time when painting.
    lgreen = new Paint();
    dgreen = new Paint();
    red = new Paint();
    lgreen.setColor(getResources().getColor(
      android.R.color.holo_green_light));
    dgreen.setColor(getResources().getColor(
      android.R.color.holo_green_dark));
    red.setColor(getResources().getColor(
      android.R.color.darker_gray));
    setClickable(true);
    setLongClickable(true);
    setOnLongClickListener(this);
    longClick = false;
    super.onFinishInflate();
  }
  
  @Override
  public boolean onLongClick(final View p1) {
    showContextMenu();
    longClick = true;//set the flag so it won't be interpreted as short click
    return true;
  }
  
  @Override
  public boolean onMenuItemClick(final MenuItem item) {
    List<Category> cats = new DatabaseHandler(getContext())
      .getCategories();
    switch (item.getItemId()) {
    case R.id.delete:
      //delete clicked
      listAdapter.remove(portal);
      return true;
    default:
      for (Category c : cats) {
        if (c.getId() == item.getItemId()) {
          portal.copyTo(getContext(), c);
        }
      }
      break;
    }
    return false;
  }
  
  @Override
  protected void onSizeChanged(final int w, final int h,
    final int oldw, final int oldh) {
    //resize the rectangles fitting the new size.
    final double width = w / MainFragment.MAX_KEYS;
    double current = 0;
    rects = new Rect[(int) MainFragment.MAX_KEYS];
    for (int i = 0; i < MainFragment.MAX_KEYS; i++) {
      rects[i] = new Rect((int) current, 0,
        (int) (current + width), h);
      current = current + width;
    }
    super.onSizeChanged(w, h, oldw, oldh);
  }
  
  //perform click looses information about the position of the click
  @SuppressLint("ClickableViewAccessibility")
  @Override
  public boolean onTouchEvent(final MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_UP)
      //user removed his finger
      if (!longClick) {
        //simple click
        final int middle = getWidth() / 2;
        if (event.getX() < middle)
          portal.decreaseCount(getContext());
        else
          portal.increaseCount(getContext());
        invalidate();
      } else
        //long click. reset the flag and don't use this touch.
        longClick = false;
    super.onTouchEvent(event);
    return true; //Interested in following events
  }
}

Java Source Code List

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