Android Open Source - android-ui Action

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License

The source code is released under:

Apache License

Java Source Code

package at.markushi.ui.action;
//  w  w  w . j av a2  s.  co  m
import java.util.ArrayList;
import java.util.List;

import android.graphics.Matrix;
import android.os.Parcel;
import android.os.Parcelable;

/**
 * A action to be drawn by {@link at.markushi.ui.ActionView}
 */
public class Action implements Parcelable {

  // 3 Lines * 4 points each
  public static final int ACTION_SIZE = 12;

  // combination of x/y positions describing the lines
  protected float[] lineData;
  protected List<LineSegment> lineSegments = new ArrayList<LineSegment>(3);
  protected boolean transformed = false;
  protected float size = 1f;

  public Action() {
    
  }

  public Action(float[] lineData, List<LineSegment> lineSegments) {
    this.lineData = lineData;
    if (lineSegments != null) {
      this.lineSegments.addAll(lineSegments);
    }
  }

  public void transform(float translationX, float translationY, float scale, float size) {

    this.size = size;
    this.transformed = true;

    final Matrix m = new Matrix();
    m.preScale(scale, scale);
    m.postTranslate(translationX, translationY);
    m.mapPoints(lineData);
  }

  public void flipHorizontally() {
    // flip x coordinates
    for (int i = 0; i < lineData.length; i += 2) {
      lineData[i] = size - lineData[i];
    }

    // flip line direction
    for (int i = 0; i < lineData.length; i += 4) {
      float x0 = lineData[i];
      float y0 = lineData[i + 1];
      lineData[i + 0] = lineData[i + 2];
      lineData[i + 1] = lineData[i + 3];
      lineData[i + 2] = x0;
      lineData[i + 3] = y0;
    }
  }

  public float[] getLineData() {
    return lineData;
  }

  public List<LineSegment> getLineSegments() {
    return lineSegments;
  }

  public void setLineSegments(List<LineSegment> lineSegments) {
    this.lineSegments = lineSegments;
  }

  public boolean isTransformed() {
    return transformed;
  }

  @Override
  public int describeContents() {
    return 0;
  }

  @Override
  public void writeToParcel(Parcel dest, int flags) {
    dest.writeFloatArray(this.lineData);
    dest.writeTypedList(lineSegments);
  }

  private Action(Parcel in) {
    this.lineData = in.createFloatArray();
    in.readTypedList(lineSegments, LineSegment.CREATOR);
  }

  public static final Parcelable.Creator<Action> CREATOR = new Parcelable.Creator<Action>() {
    public Action createFromParcel(Parcel source) {
      return new Action(source);
    }

    public Action[] newArray(int size) {
      return new Action[size];
    }
  };
}

Java Source Code List

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