private int getAxisPosition(XShape aAxis, double fValue, boolean bVertical) {
int nResult = 0;
if (aAxis != null) {
XPropertySet aAxisProp = UnoRuntime.queryInterface(XPropertySet.class, aAxis);
try {
double fMin, fMax;
fMin = ((Double) aAxisProp.getPropertyValue("Min")).doubleValue();
fMax = ((Double) aAxisProp.getPropertyValue("Max")).doubleValue();
double fRange = fMax - fMin;
if (fMin <= fValue && fValue <= fMax && fRange != 0) {
if (bVertical) {
nResult =
aAxis.getPosition().Y
+ (int) ((aAxis.getSize().Height) * (1.0 - ((fValue - fMin) / fRange)));
} else {
nResult =
aAxis.getPosition().X
+ (int) ((aAxis.getSize().Width) * ((fValue - fMin) / fRange));
}
}
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex, "Exception caught", JOptionPane.WARNING_MESSAGE);
}
}
return nResult;
}
// XInitialization
public void initialize(Object[] aArguments) throws Exception, RuntimeException {
if (aArguments.length > 0) {
maChartDocument = UnoRuntime.queryInterface(XChartDocument.class, aArguments[0]);
XPropertySet aDocProp = UnoRuntime.queryInterface(XPropertySet.class, maChartDocument);
if (aDocProp != null) {
// set base diagram which will be extended in refresh()
aDocProp.setPropertyValue("BaseDiagram", "com.sun.star.chart.XYDiagram");
}
// get the draw page
XDrawPageSupplier aPageSupp =
UnoRuntime.queryInterface(XDrawPageSupplier.class, maChartDocument);
if (aPageSupp != null)
maDrawPage = UnoRuntime.queryInterface(XDrawPage.class, aPageSupp.getDrawPage());
// get a factory for creating shapes
maShapeFactory = UnoRuntime.queryInterface(XMultiServiceFactory.class, maChartDocument);
}
}
// XRefreshable
public void refresh() throws RuntimeException {
// recycle shapes in first call, if document was loaded
if (maBottomLine == null || maTopLine == null) {
// try to recycle loaded shapes
XPropertySet aDocProp = UnoRuntime.queryInterface(XPropertySet.class, maChartDocument);
if (aDocProp != null) {
try {
XIndexAccess aShapesIA =
UnoRuntime.queryInterface(
XIndexAccess.class, aDocProp.getPropertyValue("AdditionalShapes"));
if (aShapesIA != null && aShapesIA.getCount() > 0) {
XShape aShape;
String aName;
for (int i = aShapesIA.getCount() - 1; i >= 0; --i) {
aShape = UnoRuntime.queryInterface(XShape.class, aShapesIA.getByIndex(i));
if (aShape != null) {
XPropertySet aProp = UnoRuntime.queryInterface(XPropertySet.class, aShape);
aName = (String) aProp.getPropertyValue("Name");
if (aName.equals("top")) {
maTopLine = aShape;
} else if (aName.equals("bottom")) {
maBottomLine = aShape;
}
}
}
}
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex, "Exception caught", JOptionPane.WARNING_MESSAGE);
}
}
}
// create top line if it does not yet exist
try {
if (maTopLine == null) {
maTopLine =
UnoRuntime.queryInterface(
XShape.class, maShapeFactory.createInstance("com.sun.star.drawing.LineShape"));
maDrawPage.add(maTopLine);
// make line red and thicker
XPropertySet aShapeProp = UnoRuntime.queryInterface(XPropertySet.class, maTopLine);
aShapeProp.setPropertyValue("LineColor", new Integer(0xe01010));
aShapeProp.setPropertyValue("LineWidth", new Integer(50));
aShapeProp.setPropertyValue("Name", "top");
}
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex, "Exception caught", JOptionPane.WARNING_MESSAGE);
}
// create bottom line if it does not yet exist
try {
if (maBottomLine == null) {
maBottomLine =
UnoRuntime.queryInterface(
XShape.class, maShapeFactory.createInstance("com.sun.star.drawing.LineShape"));
maDrawPage.add(maBottomLine);
// make line green and thicker
XPropertySet aShapeProp = UnoRuntime.queryInterface(XPropertySet.class, maBottomLine);
aShapeProp.setPropertyValue("LineColor", new Integer(0x10e010));
aShapeProp.setPropertyValue("LineWidth", new Integer(50));
aShapeProp.setPropertyValue("Name", "bottom");
}
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex, "Exception caught", JOptionPane.WARNING_MESSAGE);
}
if (maTopLine == null || maBottomLine == null) {
JOptionPane.showMessageDialog(
null, "One of the lines is still null", "Assertion", JOptionPane.WARNING_MESSAGE);
return;
}
// position lines
// get data
XChartDataArray aDataArray =
UnoRuntime.queryInterface(XChartDataArray.class, maChartDocument.getData());
double aData[][] = aDataArray.getData();
// get axes
XDiagram aDiagram = maChartDocument.getDiagram();
XShape aXAxis =
UnoRuntime.queryInterface(
XShape.class, UnoRuntime.queryInterface(XAxisXSupplier.class, aDiagram).getXAxis());
XShape aYAxis =
UnoRuntime.queryInterface(
XShape.class, UnoRuntime.queryInterface(XAxisYSupplier.class, aDiagram).getYAxis());
// calculate points for hull
final int nLength = aData.length;
int i, j;
double fMax, fMin;
Point aMaxPtSeq[][] = new Point[1][];
aMaxPtSeq[0] = new Point[nLength];
Point aMinPtSeq[][] = new Point[1][];
aMinPtSeq[0] = new Point[nLength];
for (i = 0; i < nLength; i++) {
fMin = fMax = aData[i][1];
for (j = 1; j < aData[i].length; j++) {
if (aData[i][j] > fMax) fMax = aData[i][j];
else if (aData[i][j] < fMin) fMin = aData[i][j];
}
aMaxPtSeq[0][i] =
new Point(
getAxisPosition(aXAxis, aData[i][0], false), getAxisPosition(aYAxis, fMax, true));
aMinPtSeq[0][i] =
new Point(
getAxisPosition(aXAxis, aData[i][0], false), getAxisPosition(aYAxis, fMin, true));
}
// apply point sequences to lines
try {
XPropertySet aShapeProp = UnoRuntime.queryInterface(XPropertySet.class, maTopLine);
aShapeProp.setPropertyValue("PolyPolygon", aMaxPtSeq);
aShapeProp = UnoRuntime.queryInterface(XPropertySet.class, maBottomLine);
aShapeProp.setPropertyValue("PolyPolygon", aMinPtSeq);
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex, "Exception caught", JOptionPane.WARNING_MESSAGE);
}
}