plugins/org.eclipse.graphiti.ui/src/org/eclipse/graphiti/ui/internal/fixed/FixedScaledGraphics.java

/*********************************************************************
* Copyright (c) 2005, 2019 SAP SE
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* Contributors:
*    SAP SE - initial API, implementation and documentation
*    mwenz - Bug 477421 - SWTException in ScaledGraphics.getCachedFontData
*
* SPDX-License-Identifier: EPL-2.0
**********************************************************************/
package org.eclipse.graphiti.ui.internal.fixed;

import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.ScaledGraphics;
import org.eclipse.swt.graphics.Path;

/**
 * This class is a subclass of ScaledGraphics, which only purpose is to fix bugs
 * in ScaledGraphics or implement previously not implemented methods. This class
 * does not add any Graphiti specific coding.
 * 
 * @noinstantiate This class is not intended to be instantiated by clients.
 * @noextend This class is not intended to be subclassed by clients.
 */
public class FixedScaledGraphics extends ScaledGraphics {

	private Graphics graphics;
	private boolean isDisposed = false;

	/**
	 * Instantiates a new fixed scaled graphics.
	 * 
	 * @param graphics
	 *            the graphics
	 */
	public FixedScaledGraphics(Graphics graphics) {
		super(graphics);
		this.graphics = graphics;
	}

	public boolean isDisposed() {
		return isDisposed;
	}

	// ========================================================================
	// ===================== overwritten changed methods ======================
	// ========================================================================


	@Override
	// Do not zoom anymore
	// Just forward to the wrapped Graphics
	public void fillGradient(int x, int y, int w, int h, boolean vertical) {
		graphics.fillGradient(x, y, w, h, vertical);
	}

	/*
	 * Overridden to store disposed state in order to be able to avoid future
	 * "SWTException: Graphic is disposed" exceptions
	 * 
	 * @see org.eclipse.draw2d.ScaledGraphics#dispose()
	 */
	@Override
	public void dispose() {
		super.dispose();
		isDisposed = true;
	}

	// ========================================================================
	// ===================== overwritten missing methods ======================
	// ========================================================================


	@Override
	// Just forward to the wrapped Graphics
	public void rotate(float degrees) {
		graphics.rotate(degrees);
	}


	@Override
	// Just forward to translate(int, int)
	public void translate(float dx, float dy) {
		graphics.translate(Math.round(dx), Math.round(dy));
	}


	@Override
	// Just forward to the wrapped Graphics
	public void drawPath(Path path) {
		graphics.drawPath(path);
	}


	@Override
	// Just forward to the wrapped Graphics
	public void fillPath(Path path) {
		graphics.fillPath(path);
	}


	@Override
	public void clipPath(Path path) {
			graphics.clipPath(path);
	}


	@Override
	// Just forward to the wrapped Graphics
	public void setClip(Path path) {
		graphics.setClip(path);
	}
}