Creating a Chart OLE Object in Draw and Impress
The alternative is to create an OLE shape and insert it into a draw page. Writer, Spreadsheet documents and Draw/Impress documents have access to a draw page. The shape is told to be a chart by setting the unique class-id.
A draw page collection is obtained from the com.sun.star.drawing.XDrawPagesSupplier of a draw or presentation document. To retrieve a single draw page, use com.sun.star.container.XIndexAccess.
A spreadsheet document is also a com.sun.star.drawing.XDrawPagesSupplier that provides draw pages for all sheets, that is, the draw page for the third sheet is obtained by calling getByIndex(2) on the interface com.sun.star.container.XIndexAccess of the container, returned by com.sun.star.drawing.XDrawPagesSupplier:getDrawPages().
A spreadsheet draw page can be acquired directly at the corresponding sheet object. A single sheet supports the service com.sun.star.sheet.Spreadsheet that supplies a single page, com.sun.star.drawing.XDrawPageSupplier, where the page is acquired using the method getDrawPage().
The OpenOffice.org Writer currently does not support the creation of OLE Charts or Charts based on a text table in a Writer document using the API.
The document model is required once a chart is inserted. In charts inserted as OLE2Shape, the document model is available at the property Model of the OLE2Shape after setting the CLSID.
The following example assumes a valid drawing document in the variable aDrawDoc and creates a chart in a Draw document. See Drawing Documents and Presentation Documents for an example of how to create a drawing document.
...
final String msChartClassID = "12dcae26-281f-416f-a234-c3086127382e";
com.sun.star.frame.XModel aDrawDoc;
// get a draw document into aDrawDoc
// ...
// this will become the resulting chart
XChartDocument aChartDoc;
com.sun.star.drawing.XDrawPagesSupplier aSupplier = (com.sun.star.drawing.XDrawPagesSupplier)
UnoRuntime.queryInterface(com.sun.star.drawing.XDrawPagesSupplier.class, aDrawDoc);
com.sun.star.drawing.XShapes aPage = null;
try {
// get first page
aPage = (com.sun.star.drawing.XShapes) aSupplier.getDrawPages().getByIndex(0);
} catch (com.sun.star.lang.IndexOutOfBoundsException ex) {
System.out.println("Document has no pages: " + ex);
}
if (aPage != null) {
// the document should be a factory that can create shapes
XMultiServiceFactory aFact = (XMultiServiceFactory) UnoRuntime.queryInterface(
XMultiServiceFactory.class, aDrawDoc);
if (aFact != null) {
try {
// create an OLE 2 shape
com.sun.star.drawing.XShape aShape = (com.sun.star.drawing.XShape)
UnoRuntime.queryInterface(
com.sun.star.drawing.XShape.class,
aFact.createInstance("com.sun.star.drawing.OLE2Shape"));
// insert the shape into the page
aPage.add(aShape);
aShape.setPosition(new com.sun.star.awt.Point(1000, 1000));
aShape.setSize(new com.sun.star.awt.Size(15000, 9271));
// make the OLE shape a chart
XPropertySet aShapeProp = (XPropertySet) UnoRuntime.queryInterface(
XPropertySet.class, aShape );
// set the class id for charts
aShapeProp.setPropertyValue("CLSID", msChartClassID);
// retrieve the chart document as model of the OLE shape
aChartDoc = (XChartDocument) UnoRuntime.queryInterface(
XChartDocument.class,
aShapeProp.getPropertyValue("Model"));
} catch(com.sun.star.uno.Exception ex) {
System.out.println("Couldn't change the OLE shape into a chart: " + ex);
}
}
}
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