Android Open Source - customhellochartdemo Combo Line Column Chart Renderer

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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.renderer;
/*  www .j a v  a  2 s.  c  o  m*/
import lecho.lib.hellocharts.provider.ColumnChartDataProvider;
import lecho.lib.hellocharts.provider.LineChartDataProvider;
import lecho.lib.hellocharts.view.Chart;
import android.content.Context;
import android.graphics.Canvas;

public class ComboLineColumnChartRenderer extends AbstractChartRenderer {
  public static final int TYPE_LINE = 1;
  public static final int TYPE_COLUMN = 2;

  private ColumnChartRenderer columnChartRenderer;
  private LineChartRenderer lineChartRenderer;

  public ComboLineColumnChartRenderer(Context context, Chart chart, ColumnChartDataProvider columnChartDataProvider,
      LineChartDataProvider lineChartDataProvider) {
    super(context, chart);

    this.columnChartRenderer = new ColumnChartRenderer(context, chart, columnChartDataProvider);
    this.lineChartRenderer = new LineChartRenderer(context, chart, lineChartDataProvider);
  }

  @Override
  public void initMaxViewport() {
    if (isViewportCalculationEnabled) {
      this.columnChartRenderer.initMaxViewport();
      this.lineChartRenderer.initMaxViewport();

      // Union maxViewports from both renderers.
      tempMaxViewport = this.lineChartRenderer.tempMaxViewport;
      tempMaxViewport.union(this.columnChartRenderer.tempMaxViewport);
      chart.getChartComputator().setMaxViewport(tempMaxViewport);
    }

  }

  @Override
  public void initDataMeasuremetns() {
    this.columnChartRenderer.initDataMeasuremetns();
    this.lineChartRenderer.initDataMeasuremetns();
  }

  @Override
  public void initDataAttributes() {
    this.columnChartRenderer.initDataAttributes();
    this.lineChartRenderer.initDataAttributes();
  }

  public void draw(Canvas canvas) {
    this.columnChartRenderer.draw(canvas);
    this.lineChartRenderer.draw(canvas);
  }

  @Override
  public void drawUnclipped(Canvas canvas) {
    this.columnChartRenderer.drawUnclipped(canvas);
    this.lineChartRenderer.drawUnclipped(canvas);
  }

  public boolean checkTouch(float touchX, float touchY) {
    selectedValue.clear();

    // Start with LineChartRenderer because lines are drawn on top, if no line point is selected and only then
    // check ColumnChartRenderer.
    if (this.lineChartRenderer.checkTouch(touchX, touchY)) {
      selectedValue.set(this.lineChartRenderer.getSelectedValue());
      selectedValue.setThirdIndex(TYPE_LINE);
    } else if (this.columnChartRenderer.checkTouch(touchX, touchY)) {
      selectedValue.set(this.columnChartRenderer.getSelectedValue());
      selectedValue.setThirdIndex(TYPE_COLUMN);
    }

    return isTouched();
  }

  @Override
  public void clearTouch() {

    this.lineChartRenderer.clearTouch();
    this.columnChartRenderer.clearTouch();

    selectedValue.clear();

  }
}

Java Source Code List