Android Open Source - customhellochartdemo Bubble Chart View

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Back to project page customhellochartdemo.

License

The source code is released under:

Apache License

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Java Source Code

package lecho.lib.hellocharts.view;
/*from ww w.ja  v a2 s.co m*/
import lecho.lib.hellocharts.BuildConfig;
import lecho.lib.hellocharts.model.BubbleChartData;
import lecho.lib.hellocharts.model.BubbleValue;
import lecho.lib.hellocharts.model.ChartData;
import lecho.lib.hellocharts.model.SelectedValue;
import lecho.lib.hellocharts.provider.BubbleChartDataProvider;
import lecho.lib.hellocharts.renderer.BubbleChartRenderer;
import android.content.Context;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.util.Log;

/**
 * BubbleChart, supports circle bubbles and square bubbles.
 * 
 * @author lecho
 * 
 */
public class BubbleChartView extends AbstractChartView implements BubbleChartDataProvider {
  private static final String TAG = "BubbleChartView";
  protected BubbleChartData data;
  protected BubbleChartOnValueTouchListener onValueTouchListener = new DummyOnValueTouchListener();

  protected BubbleChartRenderer bubbleChartRenderer;

  public BubbleChartView(Context context) {
    this(context, null, 0);
  }

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

  public BubbleChartView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    bubbleChartRenderer = new BubbleChartRenderer(context, this, this);
    chartRenderer = bubbleChartRenderer;
    setBubbleChartData(BubbleChartData.generateDummyData());
  }

  @Override
  public void setBubbleChartData(BubbleChartData data) {
    if (BuildConfig.DEBUG) {
      Log.d(TAG, "Setting data for BubbleChartView");
    }

    if (null == data) {
      this.data = BubbleChartData.generateDummyData();
    } else {
      this.data = data;
    }
    axesRenderer.initAxesAttributes();
    chartRenderer.initDataAttributes();
    chartRenderer.initMaxViewport();
    chartRenderer.initCurrentViewport();

    ViewCompat.postInvalidateOnAnimation(BubbleChartView.this);
  }

  @Override
  public BubbleChartData getBubbleChartData() {
    return data;
  }

  @Override
  public ChartData getChartData() {
    return data;
  }

  @Override
  public void callTouchListener() {
    SelectedValue selectedValue = chartRenderer.getSelectedValue();

    if (selectedValue.isSet()) {
      BubbleValue value = data.getValues().get(selectedValue.getFirstIndex());
      onValueTouchListener.onValueTouched(selectedValue.getFirstIndex(), value);
    } else {
      onValueTouchListener.onNothingTouched();
    }
  }

  public BubbleChartOnValueTouchListener getOnValueTouchListener() {
    return onValueTouchListener;
  }

  public void setOnValueTouchListener(BubbleChartOnValueTouchListener touchListener) {
    if (null == touchListener) {
      this.onValueTouchListener = new DummyOnValueTouchListener();
    } else {
      this.onValueTouchListener = touchListener;
    }
  }

  /**
   * Removes empty spaces, top-bottom for portrait orientation and left-right for landscape. This method has to be
   * called after view View#onSizeChanged() method is called and chart data is set. This method may be inaccurate.
   * 
   * @see BubbleChartRenderer#removeMargins()
   */
  public void removeMargins() {
    bubbleChartRenderer.removeMargins();
    ViewCompat.postInvalidateOnAnimation(this);
  }

  public interface BubbleChartOnValueTouchListener {
    public void onValueTouched(int selectedBubble, BubbleValue value);

    public void onNothingTouched();

  }

  private static class DummyOnValueTouchListener implements BubbleChartOnValueTouchListener {

    @Override
    public void onValueTouched(int selectedBubble, BubbleValue value) {
    }

    @Override
    public void onNothingTouched() {
    }

  }
}

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