Examples of org.apache.xmlgraphics.image.loader.ImageSessionContext

Package org.apache.xmlgraphics.image.loader

Examples of org.apache.xmlgraphics.image.loader.ImageSessionContext

org.apache.xmlgraphics.image.loader.ImageSessionContext
This interface is used to tell the cache which images are used by a session (in FOP that would be a rendering run). Images access within a session get a hard reference so they cannot be discarded. That could increase memory usage but helps with performance because the images don't get unloaded between layout and rendering which would mean that they have to be reloaded.

                        if (uri != null) {
                            bkg.setURL(uri);


                            try {
                                ImageManager manager = userAgent.getFactory().getImageManager();
                                ImageSessionContext sessionContext
                                    = userAgent.getImageSessionContext();
                                ImageInfo info = manager.getImageInfo(uri, sessionContext);
                                bkg.setImageInfo(info);
                            } catch (ImageException e) {
                                ResourceEventProducer eventProducer

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        final String uri = form.getImageURI();


        ImageManager manager = userAgent.getFactory().getImageManager();
        ImageInfo info = null;
        try {
            ImageSessionContext sessionContext = userAgent.getImageSessionContext();
            info = manager.getImageInfo(uri, sessionContext);


            //Create a rendering context for form creation
            PSRenderingContext formContext = new PSRenderingContext(
                    userAgent, gen, fontInfo, true);

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        ImageManager imageManager = userAgent.getFactory().getImageManager();


        SVGUserAgent svgUserAgent
            = new SVGUserAgent(userAgent, new AffineTransform());


        ImageSessionContext imageSessionContext = userAgent.getImageSessionContext();


        FontInfo fontInfo = g2d.getFontInfo();
        return new AFPBridgeContext(svgUserAgent, fontInfo, imageManager, imageSessionContext,
                new AffineTransform(), g2d);
    }

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     * @throws IOException if there's an I/O error while loading the image
     */
    protected void drawImageUsingImageHandler(ImageInfo info, Rectangle rect)
                    throws ImageException, IOException {
        ImageManager manager = getFopFactory().getImageManager();
        ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
        ImageHandlerRegistry imageHandlerRegistry = getFopFactory().getImageHandlerRegistry();


        //Load and convert the image to a supported format
        RenderingContext context = createRenderingContext();
        Map hints = createDefaultImageProcessingHints(sessionContext);

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     * @return the ImageInfo instance or null if there has been an error.
     */
    protected ImageInfo getImageInfo(String uri) {
        ImageManager manager = getFopFactory().getImageManager();
        try {
            ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
            return manager.getImageInfo(uri, sessionContext);
        } catch (ImageException ie) {
            ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
                    getUserAgent().getEventBroadcaster());
            eventProducer.imageError(this, uri, ie, null);

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     */
    protected void drawImageUsingURI(String uri, Rectangle rect) {
        ImageManager manager = getFopFactory().getImageManager();
        ImageInfo info = null;
        try {
            ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
            info = manager.getImageInfo(uri, sessionContext);


            drawImageUsingImageHandler(info, rect);
        } catch (ImageException ie) {
            ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(

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            //Additional processing: preload image
            String uri = URISpecification.getURL(newInstance.backgroundImage);
            FObj fobj = pList.getFObj();
            FOUserAgent userAgent = pList.getFObj().getUserAgent();
            ImageManager manager = userAgent.getFactory().getImageManager();
            ImageSessionContext sessionContext = userAgent.getImageSessionContext();
            ImageInfo info;
            try {
                info = manager.getImageInfo(uri, sessionContext);
                newInstance.backgroundImageInfo = info;
            } catch (ImageException e) {

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                        if (uri != null) {
                            bkg.setURL(uri);


                            try {
                                ImageManager manager = userAgent.getFactory().getImageManager();
                                ImageSessionContext sessionContext
                                    = userAgent.getImageSessionContext();
                                ImageInfo info = manager.getImageInfo(uri, sessionContext);
                                bkg.setImageInfo(info);
                            } catch (ImageException e) {
                                ResourceEventProducer eventProducer

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     * @throws IOException if there's an I/O error while loading the image
     */
    protected void drawImageUsingImageHandler(ImageInfo info, Rectangle rect)
                    throws ImageException, IOException {
        ImageManager manager = getFopFactory().getImageManager();
        ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
        ImageHandlerRegistry imageHandlerRegistry = getFopFactory().getImageHandlerRegistry();


        //Load and convert the image to a supported format
        RenderingContext context = createRenderingContext();
        Map hints = createDefaultImageProcessingHints(sessionContext);

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     * @return the ImageInfo instance or null if there has been an error.
     */
    protected ImageInfo getImageInfo(String uri) {
        ImageManager manager = getFopFactory().getImageManager();
        try {
            ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
            return manager.getImageInfo(uri, sessionContext);
        } catch (ImageException ie) {
            ResourceEventProducer eventProducer = ResourceEventProducer.Provider.get(
                    getUserAgent().getEventBroadcaster());
            eventProducer.imageError(this, uri, ie, null);

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