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

    Job.getJobManager().suspend();


    // Register the build actions
    IProgressService service = PlatformUI.getWorkbench()
        .getProgressService();
    ImageDescriptor newImage = IDEInternalWorkbenchImages
        .getImageDescriptor(IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC);
    service.registerIconForFamily(newImage,
        ResourcesPlugin.FAMILY_MANUAL_BUILD);
    service.registerIconForFamily(newImage,
        ResourcesPlugin.FAMILY_AUTO_BUILD);

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   * @see IWorkbenchConfigurer#declareImage
   */
  private void declareWorkbenchImage(Bundle ideBundle, String symbolicName,
      String path, boolean shared) {
    URL url = FileLocator.find(ideBundle, new Path(path), null);
    ImageDescriptor desc = ImageDescriptor.createFromURL(url);
    getWorkbenchConfigurer().declareImage(symbolicName, desc, shared);
  }

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    public BndSourceEditorPage(String id, BndEditor formEditor) {
        this.id = id;
        this.formEditor = formEditor;
        formEditor.getEditModel().addPropertyChangeListener(propChangeListener);
        ImageDescriptor iconDescriptor = AbstractUIPlugin.imageDescriptorFromPlugin(Plugin.PLUGIN_ID, "icons/page_white_text.png");
        icon = iconDescriptor.createImage();
    }

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            } catch (CoreException e) {
                logger.logError("Error retrieving problem markers", e);
            }
        }


        ImageDescriptor editorImgOverlay;
        if (problemSeverity >= IMarker.SEVERITY_ERROR) {
            pageImage = imgError;
            editorImgOverlay = imgErrorOverlay;
        } else if (problemSeverity >= IMarker.SEVERITY_WARNING) {
            pageImage = imgWarning;

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    }


    @Override
    public void update(ViewerCell cell) {
        Image icon = defaultImg;
        ImageDescriptor iconDescriptor;


        Object data = cell.getElement();
        if (data instanceof ConfigurationElementCategory) {
            ConfigurationElementCategory category = (ConfigurationElementCategory) data;
            cell.setText(category.toString());
            iconDescriptor = AbstractUIPlugin.imageDescriptorFromPlugin(Plugin.PLUGIN_ID, "icons/fldr_obj.gif");
        } else if (data instanceof IConfigurationElement) {
            IConfigurationElement element = (IConfigurationElement) data;
            cell.setText(element.getAttribute("name"));


            String iconPath = element.getAttribute("icon");
            if (iconPath != null)
                iconDescriptor = AbstractUIPlugin.imageDescriptorFromPlugin(element.getContributor().getName(), iconPath);
            else
                iconDescriptor = null;
        } else {
            cell.setText("<<ERROR>>");
            iconDescriptor = null;
        }


        if (iconDescriptor != null) {
            icon = imgCache.get(iconDescriptor);
            if (icon == null) {
                icon = iconDescriptor.createImage(device);
                imgCache.put(iconDescriptor, icon);
            }
        }


        if (icon != null)

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        if (image == null) {
            IConfigurationElement configElem = configElements.get(className);
            if (configElem != null) {
                String iconPath = configElem.getAttribute("icon");
                if (iconPath != null) {
                    ImageDescriptor descriptor = AbstractUIPlugin.imageDescriptorFromPlugin(configElem.getContributor().getName(), iconPath);
                    if (descriptor != null) {
                        image = descriptor.createImage();
                        images.put(className, image);
                    }
                }
            }
        }

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        cell.setText(label.toString());
        cell.setStyleRanges(label.getStyleRanges());


        String iconPath = element.getAttribute("icon");
        if (iconPath != null) {
            ImageDescriptor descriptor = AbstractUIPlugin.imageDescriptorFromPlugin(element.getContributor().getName(), iconPath);
            if (descriptor != null) {
                Image image = descriptor.createImage();
                images.add(image);
                cell.setImage(image);
            }
        }
    }

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    private Command command;


    public CommandAction(String text, int style, ActionStore actionStore) {
        super(text, style);
        ImageDescriptor img = getImage();
        if (img != null) {
            setImageDescriptor(img);            
        }
        actionStore.put(this);
    }

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        super.setInitializationData(cfig, propertyName, data);


        String strIcon = cfig.getAttribute("icon");


        // Load the icons
        ImageDescriptor baseImageDesc = strIcon != null ? AbstractUIPlugin.imageDescriptorFromPlugin(cfig.getContributor().getName(), strIcon) : null;
        imgTitleBase = baseImageDesc != null ? baseImageDesc.createImage() : getDefaultImage();


        ImageDescriptor imgWarningOverlay = AbstractUIPlugin.imageDescriptorFromPlugin(Plugin.PLUGIN_ID, "icons/warning_co.gif");
        DecorationOverlayIcon warningImageDesc = new DecorationOverlayIcon(imgTitleBase, imgWarningOverlay, IDecoration.BOTTOM_LEFT);
        imgTitleWarning = warningImageDesc.createImage();


        ImageDescriptor imgErrorOverlay = AbstractUIPlugin.imageDescriptorFromPlugin(Plugin.PLUGIN_ID, "icons/error_co.gif");
        DecorationOverlayIcon errorImageDesc = new DecorationOverlayIcon(imgTitleBase, imgErrorOverlay, IDecoration.BOTTOM_LEFT);
        imgTitleError = errorImageDesc.createImage();


        titleImage = imgTitleBase;
    }

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    }


    private static ImageDescriptor createManaged(String prefix, String name,
        String key)
    {
        ImageDescriptor result = create(prefix,
            name.substring(NAME_PREFIX_LENGTH), true);


        if (fgAvoidSWTErrorMap == null) fgAvoidSWTErrorMap = new HashMap();


        fgAvoidSWTErrorMap.put(key, result);

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