Android Open Source - customhellochartdemo Preview Line Chart View

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Back to project page customhellochartdemo.

License

The source code is released under:

Apache License

Java Source Code

package lecho.lib.hellocharts.view;
// ww w  .  j  av  a  2  s .c o  m
import lecho.lib.hellocharts.BuildConfig;
import lecho.lib.hellocharts.PreviewChartComputator;
import lecho.lib.hellocharts.gesture.PreviewChartTouchHandler;
import lecho.lib.hellocharts.model.LineChartData;
import lecho.lib.hellocharts.renderer.PreviewLineChartRenderer;
import android.content.Context;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.util.Log;

/**
 * Preview chart that can be used as overview for other LineChart. When you change Viewport of this chart, visible area
 * of other chart will change. For that you need also to use
 * {@link Chart#setViewportChangeListener(ViewportChangeListener)}
 * 
 * @author Leszek Wach
 * 
 */
public class PreviewLineChartView extends LineChartView {
  private static final String TAG = "PreviewLineChartView";

  protected PreviewLineChartRenderer previewChartRenderer;

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

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

  public PreviewLineChartView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    chartComputator = new PreviewChartComputator();
    previewChartRenderer = new PreviewLineChartRenderer(context, this, this);
    chartRenderer = previewChartRenderer;
    touchHandler = new PreviewChartTouchHandler(context, this);
    setLineChartData(LineChartData.generateDummyData());
  }

  public void setPreviewColor(int color) {
    if (BuildConfig.DEBUG) {
      Log.d(TAG, "Changing preview area color");
    }

    previewChartRenderer.setPreviewColor(color);
    ViewCompat.postInvalidateOnAnimation(this);
  }

  public int getPreviewColor() {
    return previewChartRenderer.getPreviewColor();
  }

}

Java Source Code List

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