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.

    protected GraphicsNode createImageGraphicsNode
                (BridgeContext ctx, Element imageElement, ParsedURL purl) {
        AbstractFOPBridgeContext bridgeCtx = (AbstractFOPBridgeContext)ctx;


        ImageManager manager = bridgeCtx.getImageManager();
        ImageSessionContext sessionContext = bridgeCtx.getImageSessionContext();
        try {
            ImageInfo info = manager.getImageInfo(purl.toString(), sessionContext);
            ImageFlavor[] supportedFlavors = getSupportedFlavours();
            Image image = manager.getImage(info, supportedFlavors, sessionContext);

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            establish(MODE_NORMAL);


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


                String mime = info.getMimeType();
                Map foreignAttributes = getContext().getForeignAttributes();
                String conversionMode = (String)foreignAttributes.get(

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        Rectangle targetRect = new Rectangle(x, y, width, height);


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


            PSRenderingContext renderingContext = new PSRenderingContext(
                    getUserAgent(), gen, getFontInfo());

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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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        UserAgent ua = createBatikUserAgent(pxToMillimeter);
        GVTBuilder builder = new GVTBuilder();


        final ImageManager imageManager = (ImageManager)hints.get(
                ImageProcessingHints.IMAGE_MANAGER);
        final ImageSessionContext sessionContext = (ImageSessionContext)hints.get(
                ImageProcessingHints.IMAGE_SESSION_CONTEXT);


        boolean useEnhancedBridgeContext = (imageManager != null && sessionContext != null);
        final BridgeContext ctx = (useEnhancedBridgeContext
                ? new GenericFOPBridgeContext(ua, null, imageManager, sessionContext)

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            establish(MODE_NORMAL);


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


                String mime = info.getMimeType();
                Map foreignAttributes = getContext().getForeignAttributes();
                String conversionMode = (String)foreignAttributes.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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        uri = URISpecification.getURL(uri);


        ImageManager manager = getUserAgent().getFactory().getImageManager();
        ImageInfo info = null;
        try {
            ImageSessionContext sessionContext = getUserAgent().getImageSessionContext();
            info = manager.getImageInfo(uri, sessionContext);
            Map hints = ImageUtil.getDefaultHints(sessionContext);
            org.apache.xmlgraphics.image.loader.Image img = manager.getImage(
                    info, FLAVOURS, hints, sessionContext);
            if (img instanceof ImageGraphics2D) {

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    private void putGraphic(AbstractGraphics abstractGraphic, ImageInfo info)
            throws IOException {
        try {
            FOUserAgent userAgent = abstractGraphic.getUserAgent();
            ImageManager manager = userAgent.getFactory().getImageManager();
            ImageSessionContext sessionContext = userAgent.getImageSessionContext();
            Map hints = ImageUtil.getDefaultHints(sessionContext);
            Image image = manager.getImage(info, FLAVORS, hints, sessionContext);


            putGraphic(abstractGraphic, image);
        } catch (ImageException ie) {

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    protected GraphicsNode createImageGraphicsNode
                (BridgeContext ctx, Element imageElement, ParsedURL purl) {
        AbstractFOPBridgeContext bridgeCtx = (AbstractFOPBridgeContext)ctx;


        ImageManager manager = bridgeCtx.getImageManager();
        ImageSessionContext sessionContext = bridgeCtx.getImageSessionContext();
        try {
            ImageInfo info = manager.getImageInfo(purl.toString(), sessionContext);
            ImageFlavor[] supportedFlavors = getSupportedFlavours();
            Image image = manager.getImage(info, supportedFlavors, sessionContext);

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