Android Open Source - DivisionByZero Level Map Background

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Back to project page DivisionByZero.

License

The source code is released under:

Apache License

Java Source Code

package com.ggstudios.widget;
// w  ww.j  av  a  2  s  . c o m
import com.ggstudios.divisionbyzero.LevelMap.LevelNode;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.view.View;
import android.widget.ImageView;

public class LevelMapBackground extends View {
  //private static final String TAG = "LevelMapBackground";

  private static final int MAX_LINES = 50;
  private static final int INTS_PER_LINE = 4;

  private float[] pts = new float[MAX_LINES * INTS_PER_LINE];
  private Paint paint = new Paint();

  private SparseArray<LevelNode> map;

  public LevelMapBackground(Context context) {
    this(context, null);
  }

  public LevelMapBackground(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
  }

  public LevelMapBackground(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    paint.setColor(Color.WHITE);
    paint.setAntiAlias(true);
  }

  public void setData(SparseArray<LevelNode> arr) {
    map = arr;
    layout();
  }

  @Override
  protected void onLayout (boolean changed, int left, int top, int right, int bottom) {
    super.onLayout(changed, left, top, right, bottom);
  }
  
  private void layout() {
    int idx = 0;

    final int len = map.size();
    for(int i = 0; i < len; i++) {
      LevelNode node = map.valueAt(i);

      if(node.childCount != 0) {
        ImageView v = (ImageView) node.view;
        final int x0 = v.getLeft() + (v.getWidth() / 2);
        final int y0 = v.getTop() + (v.getHeight() / 2);

        for(int j = 0; j < node.childCount; j++) {
          ImageView v2 = (ImageView) node.children.get(j).view;

          final int x1 = v2.getLeft() + (v2.getWidth() / 2);
          final int y1 = v2.getTop() + (v2.getHeight() / 2);

          pts[idx++] = x0;
          pts[idx++] = y0;
          pts[idx++] = x1;
          pts[idx++] = y1;
        }
      }
    }
  }

  @Override
  protected void onDraw(Canvas c) {
    super.onDraw(c);

    c.drawLines(pts, paint);
  }
}

Java Source Code List

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