Examples with ICustomSelectionHandler org.eclipse.swtchart.extensions.core.ICustomSelectionHandler used on opensource projects

Example 1 with ICustomSelectionHandler

use of org.eclipse.swtchart.extensions.core.ICustomSelectionHandler in project swtchart by eclipse.

the class LineSeries_Selection_Part method initialize.

private void initialize() throws Exception {
    this.setLayout(new GridLayout(1, true));
    this.setBackground(getDisplay().getSystemColor(SWT.COLOR_WHITE));
    // 
    Composite compositeInfo = new Composite(this, SWT.NONE);
    GridData gridDataComposite = new GridData(GridData.FILL_HORIZONTAL);
    gridDataComposite.horizontalAlignment = SWT.BEGINNING;
    compositeInfo.setLayoutData(gridDataComposite);
    compositeInfo.setLayout(new GridLayout(13, false));
    // 
    createLabel(compositeInfo, "X-Start:");
    textRangeXStart = createText(compositeInfo);
    createLabel(compositeInfo, "X-Stop:");
    textRangeXStop = createText(compositeInfo);
    createLabel(compositeInfo, "Y-Start:");
    textRangeYStart = createText(compositeInfo);
    createLabel(compositeInfo, "Y-Stop:");
    textRangeYStop = createText(compositeInfo);
    createLabel(compositeInfo, "X:");
    textX = createText(compositeInfo);
    createLabel(compositeInfo, "Y:");
    textY = createText(compositeInfo);
    createButtonReset(compositeInfo);
    // 
    lineChart = new LineChart(this, SWT.NONE);
    lineChart.setLayoutData(new GridData(GridData.FILL_BOTH));
    lineChart.getBaseChart().addCustomRangeSelectionHandler(new ICustomSelectionHandler() {

        @Override
        public void handleUserSelection(Event event) {
            BaseChart baseChart = lineChart.getBaseChart();
            Range rangeX = baseChart.getAxisSet().getXAxis(BaseChart.ID_PRIMARY_X_AXIS).getRange();
            Range rangeY = baseChart.getAxisSet().getYAxis(BaseChart.ID_PRIMARY_Y_AXIS).getRange();
            DecimalFormat decimalFormatX = baseChart.getDecimalFormat(IExtendedChart.X_AXIS, BaseChart.ID_PRIMARY_X_AXIS);
            DecimalFormat decimalFormatY = baseChart.getDecimalFormat(IExtendedChart.Y_AXIS, BaseChart.ID_PRIMARY_Y_AXIS);
            textRangeXStart.setText(decimalFormatX.format(rangeX.lower));
            textRangeXStop.setText(decimalFormatX.format(rangeX.upper));
            textRangeYStart.setText(decimalFormatY.format(rangeY.lower));
            textRangeYStop.setText(decimalFormatY.format(rangeY.upper));
        }
    });
    lineChart.getBaseChart().addCustomPointSelectionHandler(new ICustomSelectionHandler() {

        @Override
        public void handleUserSelection(Event event) {
            BaseChart baseChart = lineChart.getBaseChart();
            double x = baseChart.getSelectedPrimaryAxisValue(event.x, IExtendedChart.X_AXIS);
            double y = baseChart.getSelectedPrimaryAxisValue(event.y, IExtendedChart.Y_AXIS);
            // 
            DecimalFormat decimalFormatX = baseChart.getDecimalFormat(IExtendedChart.X_AXIS, BaseChart.ID_PRIMARY_X_AXIS);
            DecimalFormat decimalFormatY = baseChart.getDecimalFormat(IExtendedChart.Y_AXIS, BaseChart.ID_PRIMARY_Y_AXIS);
            textX.setText(decimalFormatX.format(x));
            textY.setText(decimalFormatY.format(y));
            // 
            try {
                ISeries series = baseChart.getSeriesSet().getSeries(DATA_POINT_SERIES);
                double xSelected = xValues.floor(x);
                double ySelected = yValues.get(xSelected);
                double[] xSeries = new double[] { xSelected };
                double[] ySeries = new double[] { ySelected };
                series.setXSeries(xSeries);
                series.setYSeries(ySeries);
                baseChart.redraw();
            } catch (Exception e) {
            // 
            }
        }
    });
    applyChartSettings();
}