Examples with CogToolWorkThread edu.cmu.cs.hcii.cogtool.CogToolWorkThread used on opensource projects

Example 1 with CogToolWorkThread

use of edu.cmu.cs.hcii.cogtool.CogToolWorkThread in project cogtool by cogtool.

the class FrameUIModel method setUpFrameContents.

/**
     * Set up the contents of the frame.
     * This creates the scalable figure and sets the initial scaling.
     *
     * The layout manager is also created with an XYLayout to allow absolute
     * positioning of elements.
     *
     * All structures needed to support drawing and selecting objects are
     * created here.
     *
     * @param double Scale: used to set the initial size of the contents.
     */
protected void setUpFrameContents(double scale) {
    // Set up the content pane
    // Create the underlying contents pane.
    // And set the contents pane's default widget color.
    contents = new ScalableFrameFigure(frame.getWidgetColor());
    contents.setScale(scale);
    contents.setLayoutManager(new XYLayout());
    // Create a new graphical widget for each widget in Frame.
    Iterator<IWidget> modelWidgets = frame.getWidgets().iterator();
    while (modelWidgets.hasNext()) {
        IWidget w = modelWidgets.next();
        createGraphicalWidget(w);
    }
    // Initialize the background image
    backgroundImage = new ImageFigure();
    final byte[] bgImg = frame.getBackgroundImage();
    if (bgImg != null) {
        if (lazyLoading) {
            // Use a thread to load the image, then set it later
            ThreadManager.IWorkThread imageLoadThread = new CogToolWorkThread() {

                protected Image img = null;

                public void doWork() {
                    // Performed by the scheduled thread
                    img = new Image(null, new ByteArrayInputStream(bgImg));
                }

                @Override
                public void doneCallback() {
                    // Performed by the main UI thread
                    if (img != null) {
                        if (isDisposed) {
                            img.dispose();
                        } else {
                            backgroundImage.setImage(img);
                        }
                    }
                    // TODO: We might want to add a real logging package
                    if (exBucket.containsExceptions()) {
                        // TODO: It is unclear what to do here.  Maybe
                        // we should just replace failed images with red
                        // Xs rather than popping up a dialog box
                        System.err.println(exBucket);
                    //                                RcvrExceptionHandler.recoverWorkThread(this,
                    //                                                                       interaction);
                    }
                }
            };
            ThreadManager.startNewThread(imageLoadThread, 2);
        } else {
            try {
                // = AUIModel.imageCache.get(frame);
                Image img = null;
                if (img == null) {
                    img = new Image(null, new ByteArrayInputStream(bgImg));
                //                        AUIModel.imageCache.put(frame, img);
                }
                backgroundImage.setImage(img);
            } catch (SWTException ex) {
                throw new GraphicsUtil.ImageException("Setting frame background image failed", ex);
            }
        }
        backgroundImage.setBounds(PrecisionUtilities.getDraw2DRectangle(frame.getBackgroundBounds()));
    }
    // Always align the picture to top left corner
    backgroundImage.setAlignment(PositionConstants.NORTH | PositionConstants.WEST);
    // Resize to preferred size.
    DoubleSize s = getPreferredSize();
    // Set the size of the contents area to fit all elements.
    contents.setSize(PrecisionUtilities.round(s.width), PrecisionUtilities.round(s.height));
    // Draw all widgets.
    drawWidgets();
}