| /******************************************************************************* |
| * Copyright (c) 2000, 2010 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.draw2d; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.eclipse.draw2d.rap.swt.SWT; |
| import org.eclipse.draw2d.rap.swt.graphics.LineAttributes; |
| import org.eclipse.swt.graphics.Font; |
| import org.eclipse.swt.graphics.FontData; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.printing.Printer; |
| import org.eclipse.swt.widgets.Display; |
| |
| /** |
| * A scalable graphics object used to print to a printer. |
| * |
| * @author danlee |
| */ |
| public class PrinterGraphics extends ScaledGraphics { |
| |
| Map imageCache = new HashMap(); |
| |
| Printer printer; |
| |
| /** |
| * Creates a new PrinterGraphics with Graphics g, using Printer p |
| * |
| * @param g |
| * Graphics object to draw with |
| * @param p |
| * Printer to print to |
| */ |
| public PrinterGraphics(Graphics g, Printer p) { |
| super(g); |
| printer = p; |
| } |
| |
| Font createFont(FontData data) { |
| return new Font(printer, data); |
| } |
| |
| private Image printerImage(Image image) { |
| Image result = (Image) imageCache.get(image); |
| if (result != null) |
| return result; |
| |
| result = new Image(printer, image.getImageData()); |
| imageCache.put(image, result); |
| return result; |
| } |
| |
| /** |
| * @see org.eclipse.draw2d.ScaledGraphics#dispose() |
| */ |
| public void dispose() { |
| super.dispose(); |
| |
| // Dispose printer images |
| Iterator iter = imageCache.values().iterator(); |
| while (iter.hasNext()) { |
| Image printerImage = ((Image) iter.next()); |
| printerImage.dispose(); |
| } |
| |
| imageCache.clear(); |
| } |
| |
| /** |
| * @see org.eclipse.draw2d.Graphics#drawImage(Image, int, int) |
| */ |
| public void drawImage(Image srcImage, int x, int y) { |
| super.drawImage(printerImage(srcImage), x, y); |
| } |
| |
| /** |
| * @see Graphics#drawImage(Image, int, int, int, int, int, int, int, int) |
| */ |
| public void drawImage(Image srcImage, int sx, int sy, int sw, int sh, |
| int tx, int ty, int tw, int th) { |
| super.drawImage(printerImage(srcImage), sx, sy, sw, sh, tx, ty, tw, th); |
| } |
| |
| int zoomFontHeight(int height) { |
| return (int) (height * zoom * Display.getCurrent().getDPI().y |
| / printer.getDPI().y + 0.0000001); |
| } |
| |
| /** |
| * @see org.eclipse.draw2d.ScaledGraphics#zoomLineWidth(float) |
| */ |
| float zoomLineWidth(float w) { |
| return (float) (w * zoom); |
| } |
| |
| /** |
| * Overridden to translate dashes to printer specific values. |
| * |
| * @see org.eclipse.draw2d.ScaledGraphics#setLineAttributes(org.eclipse.swt.graphics.LineAttributes) |
| */ |
| public void setLineAttributes(LineAttributes attributes) { |
| if (attributes.style == SWT.LINE_CUSTOM && attributes.dash != null |
| && attributes.dash.length > 0) { |
| float[] newDashes = new float[attributes.dash.length]; |
| float printerDot = (float) (printer.getDPI().y |
| / Display.getCurrent().getDPI().y + 0.0000001); |
| for (int i = 0; i < attributes.dash.length; i++) { |
| newDashes[i] = attributes.dash[i] * printerDot; |
| } |
| // make a copy of attributes, we dont's want it changed on figure |
| // (or display will be affected) |
| // UNSUPPORTED - certain line attributes in RAP are unsupported |
| // super.setLineAttributes(new LineAttributes(attributes.width, |
| // attributes.cap, attributes.join, attributes.style, |
| // newDashes, attributes.dashOffset * printerDot, |
| // attributes.miterLimit)); |
| super.setLineAttributes(new LineAttributes(attributes.width,attributes.cap,attributes.join)); |
| } else { |
| super.setLineAttributes(attributes); |
| } |
| } |
| |
| } |