Many thanks, Ariel!
I will take a try following your advice. If I have any achievement or
difficulties, I will post on this thread and hope you can help me then.
Thank you, it's so kind of you providing me so many useful information! ;-)
best regards,
Hanbo
On 9/24/07, Ariel Constenla-Haile <[EMAIL PROTECTED]>
wrote:
>
> Hi Hanbo,
> I answer you here, though I think you will have more answers if you send
> your question to [EMAIL PROTECTED]
>
> Hanbo Wang escribió:
> > Hey, guys,
> >
> > I was encountered such a question: I wanted to write a java program to
> > extract the binary ole-object in ODP file and convert them into images.
> I
> > thought I should divided this task into 2 steps:
> >
> > First of all, I should extract the object file from the zipped file.
>
> I do not understand what you want:
>
> 1. "extract the binary ole-object in ODP file" == you want to store a
> copy of the embedded object as an independent file? If so, I think this
> isn't a good approach: if you want to read an embedded
> object's stream you shouldn't treat the document as a zip file with Java
> [N]IO/ZIP API (by the way, this is never a good practice with OOo docs:
> you better use OOo UCB API, for example, for currently open documents:
> css.ucb.TransientDocumentsContentProvider ).
> I think you will find what you need in the module css.embed in
> combination with css.ucb (instead of using Java API).
>
>
> 2. if you ONLY want to "convert" the embedded object to an image format:
> did you think about the attribute XEmbeddedObjectSupplier2 ::
> ReplacementGraphic ? (not present in every kind of embedded object; for
> example, in a Java Applet, it will be null)
> It will give you access to the XGraphic, then you can store this
> XGraphic using XGraphicProvider::storeGraphic() [1]
>
> > That's
> > easy, but the question is what OO has done to this object. I wanted to
> know
> > the format of the file. Did OO server add some header information, or
> just
> > it was serialized by the programe who created it.
> >
> > And then, I've checked the content.xml, knowing object's clsid, I can
> look
> > up in the registry to know which program created such an object. So that
> I
> > will depend on some Java-Com co-operation projects such as Jacob to
> write
> > some Java codes to manipulate the COM, and finally diplay the object and
> > convert it into image.
> >
> > Can you give me some advice on my ideas, or can you tell me where OO
> > displayed these ole-objects in Impress or other applications.
> >
> > Many thanks!
> >
> > best regars,
> > Hanbo Wang
> > 2007.9.22
> >
>
> I hope this could help you; if not, do not hesitate to answer again,
> (with more details about what you're exactly looking for, please).
>
>
> Bye and luck,
> Ariel.
>
>
> [1] See sample code:
>
> //Start **********************************************************
> /*
> * EmbeddedObjectsTest.java
> *
> * Created on 23.08.2007 - 13:31:04
> *
> */
>
> package ar.com.arielconstenlahaile.test.embed;
>
> import com.sun.star.comp.helper.Bootstrap;
> import com.sun.star.uno.XComponentContext;
> import com.sun.star.lang.XMultiComponentFactory;
> import com.sun.star.uno.UnoRuntime;
>
> import com.sun.star.lang.XComponent;
> import com.sun.star.frame.XComponentLoader;
> import com.sun.star.lang.XMultiServiceFactory;
>
> import com.sun.star.text.XTextContent;
> import com.sun.star.text.XTextDocument;
> import com.sun.star.text.XTextRange;
> import com.sun.star.text.XTextCursor;
> import com.sun.star.text.XTextEmbeddedObjectsSupplier;
>
> import com.sun.star.document.XEmbeddedObjectSupplier;
> import com.sun.star.document.XEmbeddedObjectSupplier2;
>
> import com.sun.star.beans.XPropertySet;
> import com.sun.star.beans.PropertyValue;
> import com.sun.star.beans.PropertyState;
> import com.sun.star.container.XNamed;
> import com.sun.star.container.XNameAccess;
>
> import com.sun.star.graphic.XGraphic;
> import com.sun.star.graphic.XGraphicProvider;
>
> import com.sun.star.util.XStringSubstitution;
>
> import com.sun.star.lang.WrappedTargetException;
> import com.sun.star.container.NoSuchElementException;
>
> /**
> *
> * @author ArielConstenlaHaile
> */
> public class EmbeddedObjectsTest {
>
> private XComponentContext xContext;
> private XMultiComponentFactory xMCF;
>
> private XTextDocument xTextDocument;
> private String formulaName = "OOoMath test";
> private XGraphic xReplacementGraphic;
>
>
> public EmbeddedObjectsTest(XComponentContext xContext)
> throws com.sun.star.uno.Exception {
>
> this.xContext = xContext;
> this.xMCF = xContext.getServiceManager();
>
> xTextDocument = createWriterDoc();
> createMathFormula();
> XGraphic xReplacementGraphic = getReplacementGraphic();
>
> storeGraphic(
> xReplacementGraphic,
> "OOoMath_Replacement_Graphic_TEST.png");
>
> }
>
>
> private XTextDocument createWriterDoc() throws
> com.sun.star.uno.Exception{
>
> XComponentLoader xDesktopLoader = (XComponentLoader)
> UnoRuntime.queryInterface(
> XComponentLoader.class,
> xMCF.createInstanceWithContext(
> "com.sun.star.frame.Desktop", xContext));
> return (XTextDocument)UnoRuntime.queryInterface(
> XTextDocument.class,
> xDesktopLoader.loadComponentFromURL(
> "private:factory/swriter", "_default", 0, new
> PropertyValue[]{}));
> }
>
>
> private void createMathFormula() throws com.sun.star.uno.Exception {
>
> XMultiServiceFactory xDocFactory = (XMultiServiceFactory)
> UnoRuntime.queryInterface(XMultiServiceFactory.class,
> xTextDocument);
>
> XTextContent xTextContent = (XTextContent)
> UnoRuntime.queryInterface(
> XTextContent.class,
> xDocFactory.createInstance(
> "com.sun.star.text.TextEmbeddedObject" ));
>
> XPropertySet xPropertySet = (XPropertySet)
> UnoRuntime.queryInterface(
> XPropertySet.class, xTextContent);
>
> xPropertySet.setPropertyValue(
> "CLSID",
> "078B7ABA-54FC-457F-8551-6147e776a997" );
>
> XNamed xnamed = (XNamed) UnoRuntime.queryInterface(
> XNamed.class, xTextContent);
> xnamed.setName(formulaName);
>
> XTextCursor xTextCursor =
> xTextDocument.getText().createTextCursor();
> XTextRange xTextRange = (XTextRange) UnoRuntime.queryInterface(
> XTextRange.class, xTextCursor);
> xTextDocument.getText().insertTextContent(
> xTextRange.getStart(), xTextContent, false );
>
> XEmbeddedObjectSupplier xEmbeddedObjectSupplier =
> (XEmbeddedObjectSupplier) UnoRuntime.queryInterface(
> XEmbeddedObjectSupplier.class, xTextContent);
> XComponent xEmbeddedObjectModel =
> xEmbeddedObjectSupplier.getEmbeddedObject();
>
> XPropertySet xFormulaProperties = (XPropertySet)
> UnoRuntime.queryInterface(
> XPropertySet.class, xEmbeddedObjectModel);
> xFormulaProperties.setPropertyValue(
> "Formula",
> "{ { 6 over 7 times 8 } + 5 } over 10" );
>
> }
>
>
> private XGraphic getReplacementGraphic() {
> XGraphic replacementGraphic= null;
> try {
> XTextEmbeddedObjectsSupplier xTextEmbeddedObjectsSupplier =
> (XTextEmbeddedObjectsSupplier) UnoRuntime.queryInterface(
> XTextEmbeddedObjectsSupplier.class, xTextDocument);
> XNameAccess xEmbeddedObjectsNameAccess =
> xTextEmbeddedObjectsSupplier.getEmbeddedObjects();
>
> XEmbeddedObjectSupplier2 xEmbeddedObjectSupplier2 =
> (XEmbeddedObjectSupplier2) UnoRuntime.queryInterface(
> XEmbeddedObjectSupplier2.class,
> xEmbeddedObjectsNameAccess.getByName(formulaName));
> if (xEmbeddedObjectSupplier2 != null){
> replacementGraphic =
> xEmbeddedObjectSupplier2.getReplacementGraphic();
> }
>
> } catch (NoSuchElementException ex) {
> ex.printStackTrace();
> } catch (WrappedTargetException ex) {
> ex.printStackTrace();
> } finally {
> return replacementGraphic;
> }
> }
>
>
> private String getTempDir() throws com.sun.star.uno.Exception {
> XStringSubstitution xStringSubstitution = (XStringSubstitution)
> UnoRuntime.queryInterface(
> XStringSubstitution.class,
> xMCF.createInstanceWithContext(
> "com.sun.star.util.PathSubstitution", xContext));
>
> return xStringSubstitution.getSubstituteVariableValue("$(temp)");
> }
>
>
>
> private void storeGraphic(
> XGraphic xReplacementGraphic,
> String fileName
> ) throws com.sun.star.uno.Exception {
>
> if (xReplacementGraphic!=null){
> String tempDir = getTempDir();
> PropertyValue[] aMediaProperties = {
> new PropertyValue(
> "URL", 0,
> new String(tempDir + "/" + fileName),
> PropertyState.DIRECT_VALUE),
> new PropertyValue(
> "MimeType", 0,
> new String("image/png"),
> PropertyState.DIRECT_VALUE)
> };
> storeGraphic(
> xReplacementGraphic,
> aMediaProperties);
> }
> }
>
> private void storeGraphic(
> XGraphic xGraphic,
> PropertyValue[] aMediaProperties
> ) throws com.sun.star.uno.Exception {
> XGraphicProvider xGraphicProvider = (XGraphicProvider)
> UnoRuntime.queryInterface(
> XGraphicProvider.class,
> xMCF.createInstanceWithContext(
> "com.sun.star.graphic.GraphicProvider", xContext));
> xGraphicProvider.storeGraphic(xGraphic, aMediaProperties);
> }
>
>
>
> public static void main(String[] args) {
> try {
> XComponentContext xCtxt = Bootstrap.bootstrap();
> EmbeddedObjectsTest test = new EmbeddedObjectsTest(xCtxt);
> } catch (java.lang.Exception e){
> e.printStackTrace();
> } finally {
> System.exit( 0 );
> }
> }
>
> }
> // End ******************************************************
>
> --
> Ariel Constenla-Haile
> La Plata, Argentina
>
> [EMAIL PROTECTED]
> [EMAIL PROTECTED]
>
> http://www.arielconstenlahaile.com.ar/ooo/
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
>
