Examples with StreamResource com.vaadin.terminal.StreamResource used on opensource projects

Example 16 with StreamResource

use of com.vaadin.terminal.StreamResource in project Activiti by Activiti.

the class ImageAttachmentRenderer method getDetailComponent.

@Override
public Component getDetailComponent(Attachment attachment) {
    VerticalLayout verticalLayout = new VerticalLayout();
    verticalLayout.setSizeUndefined();
    verticalLayout.setSpacing(true);
    verticalLayout.setMargin(true);
    Label description = new Label(attachment.getDescription());
    description.setSizeUndefined();
    verticalLayout.addComponent(description);
    // Image
    TaskService taskService = ProcessEngines.getDefaultProcessEngine().getTaskService();
    String mimeType = extractMineType(attachment.getType());
    InputStream imageStream = ImageUtil.resizeImage(taskService.getAttachmentContent(attachment.getId()), mimeType, 900, 550);
    Resource resource = new StreamResource(new InputStreamStreamSource(imageStream), attachment.getName() + extractExtention(attachment.getType()), ExplorerApp.get());
    Embedded image = new Embedded(null, resource);
    verticalLayout.addComponent(image);
    // Linke
    HorizontalLayout LinkLayout = new HorizontalLayout();
    LinkLayout.setSpacing(true);
    verticalLayout.addComponent(LinkLayout);
    verticalLayout.setComponentAlignment(LinkLayout, Alignment.MIDDLE_CENTER);
    Label fullSizeLabel = new Label(ExplorerApp.get().getI18nManager().getMessage(Messages.RELATED_CONTENT_SHOW_FULL_SIZE));
    LinkLayout.addComponent(fullSizeLabel);
    Link link = null;
    if (attachment.getUrl() != null) {
        link = new Link(attachment.getUrl(), new ExternalResource(attachment.getUrl()));
    } else {
        taskService = ProcessEngines.getDefaultProcessEngine().getTaskService();
        Resource res = new StreamResource(new InputStreamStreamSource(taskService.getAttachmentContent(attachment.getId())), attachment.getName() + extractExtention(attachment.getType()), ExplorerApp.get());
        link = new Link(attachment.getName(), res);
    }
    link.setIcon(Images.RELATED_CONTENT_PICTURE);
    link.setTargetName(ExplorerLayout.LINK_TARGET_BLANK);
    LinkLayout.addComponent(link);
    return verticalLayout;
}