Examples of org.eclipse.jface.resource.ImageDescriptor

org.eclipse.jface.resource.ImageDescriptor
An image descriptor is an object that knows how to create an SWT image. It does not hold onto images or cache them, but rather just creates them on demand. An image descriptor is intended to be a lightweight representation of an image that can be manipulated even when no SWT display exists.
This package defines a concrete image descriptor implementation which reads an image from a file (FileImageDescriptor). It also provides abstract framework classes (this one and CompositeImageDescriptor) which may be subclassed to define news kinds of image descriptors.

Using this abstract class involves defining a concrete subclass and providing an implementation for the getImageData method.

There are two ways to get an Image from an ImageDescriptor. The method createImage will always return a new Image which must be disposed by the caller. Alternatively, createResource() returns a shared Image. When the caller is done with an image obtained from createResource, they must call destroyResource() rather than disposing the Image directly. The result of createResource() can be safely cast to an Image.
@see org.eclipse.swt.graphics.Image

    private Image getResourceImage(String uri) {
      Image result = null;
      Image base = null;


      IEditorRegistry er = PlatformUI.getWorkbench().getEditorRegistry();
      ImageDescriptor imageDescriptor = er.getImageDescriptor(uri);
      Image image = (Image) imageTable.get(imageDescriptor);
      if (image == null) {
        image = imageDescriptor.createImage();
        imageTable.put(imageDescriptor, image);
      }
      base = image;


      if (base != null) {

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  /**
   * @generated
   */
  public static ImageDescriptor getImageDescriptor(ENamedElement element) {
    String key = getImageRegistryKey(element);
    ImageDescriptor imageDescriptor = getImageRegistry().getDescriptor(key);
    if (imageDescriptor == null) {
      imageDescriptor = getProvidedImageDescriptor(element);
      if (imageDescriptor == null) {
        imageDescriptor = ImageDescriptor.getMissingImageDescriptor();
      }

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   */
  public static Image getImage(ENamedElement element) {
    String key = getImageRegistryKey(element);
    Image image = getImageRegistry().get(key);
    if (image == null) {
      ImageDescriptor imageDescriptor = getProvidedImageDescriptor(element);
      if (imageDescriptor == null) {
        imageDescriptor = ImageDescriptor.getMissingImageDescriptor();
      }
      getImageRegistry().put(key, imageDescriptor);
      image = getImageRegistry().get(key);

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        String iconPath;
        iconPath = "icons/full/"; //$NON-NLS-1$
        try {
            URL installURL = SVNUIPlugin.getPlugin().getBundle().getEntry("/"); //$NON-NLS-1$
            URL url = new URL(installURL, iconPath + "wizards/newconnect_wiz.gif"); //$NON-NLS-1$
            ImageDescriptor desc = ImageDescriptor.createFromURL(url);
            setDefaultPageImageDescriptor(desc);
        } catch (MalformedURLException e) {
            // Should not happen.  Ignore.
        }
    }

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  protected void initializeImageRegistry(ImageRegistry registry) {
        for (String imageID : IDjangoImages.ALL_KNOWN_IMAGES) {
          IPath path = new Path(imageID);
          URL url = FileLocator.find(getBundle(), path, null);
          ImageDescriptor desc = ImageDescriptor.createFromURL(url);
          registry.put(imageID, desc);
        }
     }

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  protected void initializeImageRegistry(ImageRegistry registry) {
        for (String imageID : IDjangoImages.ALL_KNOWN_IMAGES) {
          IPath path = new Path(imageID);
          URL url = FileLocator.find(getBundle(), path, null);
          ImageDescriptor desc = ImageDescriptor.createFromURL(url);
          registry.put(imageID, desc);
        }
     }

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    /**
     * Create actions, linking view to current map.
     */
    private void createActions() {
        select=ApplicationGIS.getToolManager().createToolAction(BBoxSelection.ID, ToolsConstants.SELECTION_CATEGORY);
        ImageDescriptor icon = AbstractUIPlugin.imageDescriptorFromPlugin( SelectPlugin.ID, "icons/eview16/select_view.gif"); //$NON-NLS-1$
        select.setImageDescriptor( icon );
        
        this.promoteSelection=new PromoteSelectionAction();
        
        zoom=((ToolManager) ApplicationGIS.getToolManager()).createToolAction(ZoomSelection.ID, ToolsConstants.ZOOM_CATEGORY);

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                ePath = 'e' + path;
            } else {
                dPath = "dlcl16/" + relPath; //$NON-NLS-1$
                ePath = "elcl16/" + relPath; //$NON-NLS-1$
            }
            ImageDescriptor image;


            image = UiPlugin.getDefault().getImageDescriptor(ePath);
            if (id != null) {
                a.setImageDescriptor(image);
            }

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                ePath = 'e' + path;
            } else {
                dPath = "dlcl16/" + relPath; //$NON-NLS-1$
                ePath = "elcl16/" + relPath; //$NON-NLS-1$
            }
            ImageDescriptor image;


            image = LocationUIPlugin.getDefault().getImageDescriptor(ePath);
            if (id != null) {
              LocationUIPlugin.trace(id + ": '" + ePath + "' found " + id); //$NON-NLS-1$ //$NON-NLS-2$
                a.setImageDescriptor(image);

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    }
    
    public ImageDescriptor getImageDescriptor(String symbolicName) {
      
      ImageRegistry imageRegistry = getImageRegistry();
      ImageDescriptor imageDescriptor = imageRegistry.getDescriptor(symbolicName);
      if (imageDescriptor == null) {
        // create it from Path and add it to registry
        registerImage(getIconPath(), symbolicName);
      }
      return imageRegistry.getDescriptor(symbolicName);

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