Example usage for javax.swing BoundedRangeModel setExtent

Introduction

In this page you can find the example usage for javax.swing BoundedRangeModel setExtent.

Prototype

void setExtent(int newExtent);

Source Link

Document

Sets the model's extent.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {
    ChangeListener changeListener = new BoundedChangeListener();
    JScrollBar anotherJScrollBar = new JScrollBar(JScrollBar.HORIZONTAL);
    BoundedRangeModel model = anotherJScrollBar.getModel();
    model.addChangeListener(changeListener);
    model.setExtent(10);

    JFrame frame = new JFrame("ScrollBars R Us");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(anotherJScrollBar, BorderLayout.NORTH);

    frame.setSize(300, 200);//from  w w w .j a v a 2s  .  co  m
    frame.setVisible(true);
}

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From source file:de.unibayreuth.bayeos.goat.panels.timeseries.JPanelChart.java

private void recalcScrollBar(Plot plot) {
    if (plot instanceof XYPlot) {
        XYPlot hvp = (XYPlot) plot;//  w ww  . jav  a2s .c  om
        ValueAxis axis = hvp.getDomainAxis();

        axis.setLowerMargin(0);
        axis.setUpperMargin(0);

        Range rng = axis.getRange();

        BoundedRangeModel scrollBarModel = this.chartScrollBar.getModel();
        int len = scrollBarModel.getMaximum() - scrollBarModel.getMinimum();
        if (rng.getLength() > 0) {
            scrollFactor = len / rng.getLength();
        }

        double dblow = rng.getLowerBound();
        int ilow = (int) (dblow * scrollFactor);
        scrollBarModel.setMinimum(ilow);
        int val = ilow;
        scrollBarModel.setValue(val);

        double dbup = rng.getUpperBound();
        int iup = (int) (dbup * scrollFactor);
        scrollBarModel.setMaximum(iup);
        int ext = iup - ilow;
        scrollBarModel.setExtent(ext);

        scrollBarModel.addChangeListener(this);
    }
}

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From source file:de.unibayreuth.bayeos.goat.panels.timeseries.JPanelChart.java

public void chartChanged(ChartChangeEvent event) {
    try {//  w  w w  .j av  a2  s.c  om
        if (event.getChart() == null) {
            return;
        }

        BoundedRangeModel scrollBarModel = this.chartScrollBar.getModel();
        if (scrollBarModel == null) {
            return;
        }

        boolean chartIsZoomed = false;

        Plot plot = event.getChart().getPlot();
        if (plot instanceof XYPlot) {
            XYPlot hvp = (XYPlot) plot;
            ValueAxis xAxis = hvp.getDomainAxis();
            Range xAxisRange = xAxis.getRange();

            // avoid recursion
            scrollBarModel.removeChangeListener(this);

            int low = (int) (xAxisRange.getLowerBound() * scrollFactor);
            scrollBarModel.setValue(low);
            int ext = (int) (xAxisRange.getUpperBound() * scrollFactor - low);
            scrollBarModel.setExtent(ext);

            // restore
            scrollBarModel.addChangeListener(this);

            // check if zoomed horizontally
            //Range hdr = hvp.getHorizontalDataRange(xAxis);
            Range hdr = hvp.getDataRange(xAxis);

            double len = hdr == null ? 0 : hdr.getLength();
            chartIsZoomed |= xAxisRange.getLength() < len;
        }

        if (!chartIsZoomed && plot instanceof XYPlot) {
            // check if zoomed vertically
            XYPlot vvp = (XYPlot) plot;
            ValueAxis yAxis = vvp.getRangeAxis();
            if (yAxis != null) {
                chartIsZoomed = yAxis.getLowerBound() > yMin || yAxis.getUpperBound() < yMax;
            }
        }

        // enable "zoom-out-buttons" if chart is zoomed
        // otherwise disable them
        chartPanButton.setEnabled(chartIsZoomed);
        chartZoomOutButton.setEnabled(chartIsZoomed);
        chartFitButton.setEnabled(chartIsZoomed);
        chartScrollBar.setEnabled(chartIsZoomed);
        if (!chartIsZoomed) {
            setPanMode(false);
            chartZoomButton.setSelected(true);
        }
    } catch (Exception e) {
        MsgBox.error(e.getMessage());
    }
}

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From source file:apidemo.PanScrollZoomDemo.java

/**
 * Recalculates the scrollbar settings./* w  ww  .j a  v  a2  s  . c  o  m*/
 * 
 * @param plot  the plot.
 */
private void recalcScrollBar(final Plot plot) {
    if (plot instanceof XYPlot) {
        final XYPlot hvp = (XYPlot) plot;
        final ValueAxis axis = hvp.getDomainAxis();

        axis.setLowerMargin(0);
        axis.setUpperMargin(0);

        final Range rng = axis.getRange();

        final BoundedRangeModel scrollBarModel = this.scrollBar.getModel();
        final int len = scrollBarModel.getMaximum() - scrollBarModel.getMinimum();
        if (rng.getLength() > 0) {
            this.scrollFactor = len / rng.getLength();
        }

        final double dblow = rng.getLowerBound();
        final int ilow = (int) (dblow * this.scrollFactor);
        scrollBarModel.setMinimum(ilow);
        final int val = ilow;
        scrollBarModel.setValue(val);

        final double dbup = rng.getUpperBound();
        final int iup = (int) (dbup * this.scrollFactor);
        scrollBarModel.setMaximum(iup);
        final int ext = iup - ilow;
        scrollBarModel.setExtent(ext);

        scrollBarModel.addChangeListener(this);
    }
}

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From source file:apidemo.PanScrollZoomDemo.java

/**
 * Handles a {@link ChartChangeEvent}.//from   w  w w  .  ja  v a 2s . c  o  m
 * 
 * @param event  the event.
 */
public void chartChanged(final ChartChangeEvent event) {
    try {
        if (event.getChart() == null) {
            return;
        }

        final BoundedRangeModel scrollBarModel = this.scrollBar.getModel();
        if (scrollBarModel == null) {
            return;
        }

        boolean chartIsZoomed = false;

        final Plot plot = event.getChart().getPlot();
        if (plot instanceof XYPlot) {
            final XYPlot hvp = (XYPlot) plot;
            final ValueAxis xAxis = hvp.getDomainAxis();
            final Range xAxisRange = xAxis.getRange();

            // avoid recursion
            scrollBarModel.removeChangeListener(this);

            final int low = (int) (xAxisRange.getLowerBound() * this.scrollFactor);
            scrollBarModel.setValue(low);
            final int ext = (int) (xAxisRange.getUpperBound() * this.scrollFactor - low);
            scrollBarModel.setExtent(ext);

            // restore
            scrollBarModel.addChangeListener(this);

            // check if zoomed horizontally
            //Range hdr = hvp.getHorizontalDataRange(xAxis);
            final Range hdr = hvp.getDataRange(xAxis);

            final double len = hdr == null ? 0 : hdr.getLength();
            chartIsZoomed |= xAxisRange.getLength() < len;
        }

        if (!chartIsZoomed && plot instanceof XYPlot) {
            // check if zoomed vertically
            final XYPlot vvp = (XYPlot) plot;
            ValueAxis yAxis = vvp.getRangeAxis();
            if (yAxis != null) {
                chartIsZoomed = yAxis.getLowerBound() > this.primYMinMax[0]
                        || yAxis.getUpperBound() < this.primYMinMax[1];

                // right y-axis
                if (!chartIsZoomed && plot instanceof XYPlot) {
                    final XYPlot xyPlot = (XYPlot) plot;
                    yAxis = xyPlot.getRangeAxis(1);
                    if (yAxis != null) {
                        chartIsZoomed = yAxis.getLowerBound() > this.secondYMinMax[0]
                                || yAxis.getUpperBound() < this.secondYMinMax[1];
                    }
                }
            }
        }

        // enable "zoom-out-buttons" if chart is zoomed
        // otherwise disable them
        this.panButton.setEnabled(chartIsZoomed);
        this.zoomOutButton.setEnabled(chartIsZoomed);
        this.fitButton.setEnabled(chartIsZoomed);
        this.scrollBar.setEnabled(chartIsZoomed);
        if (!chartIsZoomed) {
            setPanMode(false);
            this.zoomButton.setSelected(true);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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