org.eclipse.jface.resource.DeviceResourceException Java Examples

/**
 * Given a label figure object, this will calculate the correct Font needed
 * to display into screen coordinates, taking into account the current
 * mapmode. This will typically be used by direct edit cell editors that
 * need to display independent of the zoom or any coordinate mapping that is
 * taking place on the drawing surface.
 * 
 * @param label
 *            the label to use for the font calculation
 * @return the <code>Font</code> that is scaled to the screen coordinates.
 *         Note: the returned <code>Font</code> should not be disposed since
 *         it is cached by a common resource manager.
 */
protected Font getScaledFont(IFigure label) {
	Font scaledFont = label.getFont();
	FontData data = scaledFont.getFontData()[0];
	Dimension fontSize = new Dimension(0, MapModeUtil.getMapMode(label).DPtoLP(data.getHeight()));
	label.translateToAbsolute(fontSize);

	if (Math.abs(data.getHeight() - fontSize.height) < 2)
		fontSize.height = data.getHeight();

	try {
		FontDescriptor fontDescriptor = FontDescriptor.createFrom(data);
		cachedFontDescriptors.add(fontDescriptor);
		return getResourceManager().createFont(fontDescriptor);
	} catch (DeviceResourceException e) {
		Trace.catching(DiagramUIPlugin.getInstance(), DiagramUIDebugOptions.EXCEPTIONS_CATCHING, getClass(),
				"getScaledFont", e); //$NON-NLS-1$
		Log.error(DiagramUIPlugin.getInstance(), DiagramUIStatusCodes.IGNORED_EXCEPTION_WARNING, "getScaledFont", e); //$NON-NLS-1$
	}
	return JFaceResources.getDefaultFont();
}
 

public Image getColumnImage(Object element, int index) {
	BindingElement be = (BindingElement) element;
	switch (index) {
	case COMMAND_NAME_COLUMN:
		final String commandId = be.getId();
		final ImageDescriptor imageDescriptor = commandImageService.getImageDescriptor(commandId);
		if (imageDescriptor == null) {
			return null;
		}
		try {
			return localResourceManager.createImage(imageDescriptor);
		} catch (final DeviceResourceException e) {
			final String message = "Problem retrieving image for a command '" //$NON-NLS-1$
					+ commandId + '\'';
			final IStatus status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH, 0, message, e);
			WorkbenchPlugin.log(message, status);
		}
		return null;
	}

	return null;
}
 

public Image getColumnImage(Object element, int index) {
	BindingElement be = (BindingElement) element;
	switch (index) {
	case COMMAND_NAME_COLUMN:
		final String commandId = be.getId();
		final ImageDescriptor imageDescriptor = commandImageService.getImageDescriptor(commandId);
		if (imageDescriptor == null) {
			return null;
		}
		try {
			return localResourceManager.createImage(imageDescriptor);
		} catch (final DeviceResourceException e) {
			final String message = "Problem retrieving image for a command '" //$NON-NLS-1$
					+ commandId + '\'';
			final IStatus status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH, 0, message, e);
			WorkbenchPlugin.log(message, status);
		}
		return null;
	}

	return null;
}
 

public Image getColumnImage(Object element, int index) {
	BindingElement be = (BindingElement) element;
	switch (index) {
	case COMMAND_NAME_COLUMN:
		final String commandId = be.getId();
		final ImageDescriptor imageDescriptor = commandImageService.getImageDescriptor(commandId);
		if (imageDescriptor == null) {
			return null;
		}
		try {
			return localResourceManager.createImage(imageDescriptor);
		} catch (final DeviceResourceException e) {
			final String message = "Problem retrieving image for a command '" //$NON-NLS-1$
					+ commandId + '\'';
			final IStatus status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH, 0, message, e);
			WorkbenchPlugin.log(message, status);
		}
		return null;
	}

	return null;
}
 

/**
 * This method obtains the fonts that are being used by the figure at its
 * zoom level.
 * 
 * @param gep
 *            the associated <code>GraphicalEditPart</code> of the figure
 * @param actualFont
 *            font being used by the figure
 * @param display
 * @return <code>actualFont</code> if zoom level is 1.0 (or when there's an
 *         error), new Font otherwise.
 */
private Font getZoomLevelFont(Font actualFont, Display display) {
	Object zoom = getEditPart().getViewer().getProperty(ZoomManager.class.toString());

	if (zoom != null) {
		double zoomLevel = ((ZoomManager) zoom).getZoom();

		if (zoomLevel == 1.0f)
			return actualFont;

		FontData[] fd = new FontData[actualFont.getFontData().length];
		FontData tempFD = null;

		for (int i = 0; i < fd.length; i++) {
			tempFD = actualFont.getFontData()[i];

			fd[i] = new FontData(tempFD.getName(), (int) (zoomLevel * tempFD.getHeight()), tempFD.getStyle());
		}

		try {
			FontDescriptor fontDescriptor = FontDescriptor.createFrom(fd);
			cachedFontDescriptors.add(fontDescriptor);
			return getResourceManager().createFont(fontDescriptor);
		} catch (DeviceResourceException e) {
			Trace.catching(DiagramUIPlugin.getInstance(), DiagramUIDebugOptions.EXCEPTIONS_CATCHING, getClass(),
					"getZoomLevelFonts", e); //$NON-NLS-1$
			Log.error(DiagramUIPlugin.getInstance(), DiagramUIStatusCodes.IGNORED_EXCEPTION_WARNING,
					"getZoomLevelFonts", e); //$NON-NLS-1$

			return actualFont;
		}
	} else
		return actualFont;
}
 

private Color getSpellingErrorColor(Composite composite) {
	AnnotationPreference pref = EditorsUI
			.getAnnotationPreferenceLookup().getAnnotationPreference(
					"org.eclipse.ui.workbench.texteditor.spelling"); // $NON-NLS-1$
	String preferenceKey = pref.getColorPreferenceKey();
	try {
		return fResources.createColor(PreferenceConverter.getColor(EditorsUI.getPreferenceStore(), preferenceKey));
	} catch (DeviceResourceException e) {
		SVNUIPlugin.log(IStatus.ERROR, Policy.bind("internal"), e); //$NON-NLS-1$
		return JFaceColors.getErrorText(composite.getDisplay());
	}
}
 

/**
 * Used in the script pyedit_list_bindings.py
 */
public Font getFont(FontData descriptor) throws DeviceResourceException {
    Font font = getResourceManager().createFont(FontDescriptor.createFrom(descriptor));

    //        Old implementation (for Eclipse 3.3)
    //        Font font = (Font) SWTResourceUtil.getFontTable().get(descriptor);
    //        if (font == null) {
    //            font = new Font(Display.getCurrent(), descriptor);
    //            SWTResourceUtil.getFontTable().put(descriptor, font);
    //        }
    return font;
}