Android Open Source - Android_OSM_offlinemap Star Drawable

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Back to project page Android_OSM_offlinemap.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.vellut.offlinemap;
//from  www.  ja  v  a 2s .c o m
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.Path;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;

public class StarDrawable extends Drawable {

  private Paint paint, paintBorder;
  private Path path, translatedPath;
  private int size;

  private static final int STAR_OPP_ANGLE = 72;
  private static final int STAR_ANGLE_HALF = 18;

  public StarDrawable(int color, int size) {
    this.size = size;
    paint = new Paint();
    paint.setAntiAlias(true);
    paint.setStyle(Style.FILL);
    paint.setColor(color);

    paintBorder = new Paint();
    paintBorder.setStyle(Style.STROKE);
    paintBorder.setColor(Color.WHITE);
    paintBorder.setStrokeWidth(2);
    paintBorder.setAntiAlias(true);

    int halfSize = size / 2;
    setBounds(-halfSize, -halfSize, halfSize, halfSize);
    computePath();
    translatedPath = new Path();
  }

  private void computePath() {
    Rect bounds = getBounds();
    float width = bounds.width();
    float height = bounds.height();
    float[] vertices = {0.0f, 0.375f, 0.375f, 0.375f, 0.5f, 0.0f, 0.625f, 0.375f, 1.0f, 0.375f,
        0.6875f, 0.625f, 0.8125f, 1.0f, 0.5f, 0.75f, 0.1875f, 1.0f, 0.3125f, 0.625f};

    path = new Path();
    // draw pentagram
    path.moveTo(vertices[0] * width, vertices[1] * height);
    for (int i = 2; i < vertices.length; i += 2) {
      path.lineTo(vertices[i] * width, vertices[i + 1] * height);
    }
    path.close();
  }

  @Override
  public void draw(Canvas canvas) {
    Matrix matrix = new Matrix();
    matrix.setTranslate(getBounds().left, getBounds()
        .top);
    path.transform(matrix, translatedPath);
    canvas.drawPath(translatedPath, paint);
    canvas.drawPath(translatedPath, paintBorder);
  }

  @Override
  public void setAlpha(int alpha) {
    paint.setAlpha(alpha);
  }

  @Override
  public void setColorFilter(ColorFilter cf) {
    paint.setColorFilter(cf);
  }

  @Override
  public int getOpacity() {
    return PixelFormat.OPAQUE;
  }

  @Override
  public int getIntrinsicHeight() {
    return size;
  }

  @Override
  public int getIntrinsicWidth() {
    return size;
  }
}

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