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annotate dwtx/draw2d/PrinterGraphics.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.draw2d.PrinterGraphics;
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14
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15 import dwt.dwthelper.utils;
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16 import dwtx.dwtxhelper.Collection;
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17
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18 import dwt.graphics.Font;
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19 import dwt.graphics.FontData;
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20 import dwt.graphics.Image;
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21 import dwt.printing.Printer;
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22 import dwt.widgets.Display;
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23 import dwtx.draw2d.ScaledGraphics;
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24 import dwtx.draw2d.Graphics;
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25
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26 /**
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27 * A scalable graphics object used to print to a printer.
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28 * @author danlee
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29 */
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30 public class PrinterGraphics : ScaledGraphics {
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31
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32 Map imageCache;
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33
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34 Printer printer;
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35
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36 /**
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37 * Creates a new PrinterGraphics with Graphics g, using Printer p
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38 * @param g Graphics object to draw with
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39 * @param p Printer to print to
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40 */
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41 public this(Graphics g, Printer p) {
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42 imageCache = new HashMap();
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43 super(g);
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44 printer = p;
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45 }
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46
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47 Font createFont(FontData data) {
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48 return new Font(printer, data);
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49 }
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50
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51 private Image printerImage(Image image) {
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52 Image result = cast(Image)imageCache.get(image);
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53 if (result !is null)
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54 return result;
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55
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56 result = new Image(printer, image.getImageData());
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57 imageCache.put(image, result);
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58 return result;
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59 }
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60
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61 /**
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62 * @see dwtx.draw2d.ScaledGraphics#dispose()
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63 */
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64 public void dispose() {
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65 super.dispose();
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66
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67 //Dispose printer images
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68 Iterator iter = imageCache.values().iterator();
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69 while (iter.hasNext()) {
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70 Image printerImage = (cast(Image)iter.next());
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71 printerImage.dispose();
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72 }
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73
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74 imageCache.clear();
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75 }
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76
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77 /**
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78 * @see dwtx.draw2d.Graphics#drawImage(Image, int, int)
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79 */
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80 public void drawImage(Image srcImage, int x, int y) {
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81 super.drawImage(printerImage(srcImage), x, y);
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82 }
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83
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84 /**
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85 * @see Graphics#drawImage(Image, int, int, int, int, int, int, int, int)
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86 */
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87 public void drawImage(Image srcImage, int sx, int sy, int sw, int sh,
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88 int tx, int ty, int tw, int th) {
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89 super.drawImage(printerImage(srcImage), sx, sy, sw, sh, tx, ty, tw, th);
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90 }
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91
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92 int zoomFontHeight(int height) {
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93 return cast(int)
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94 (height * zoom * Display.getCurrent().getDPI().y / printer.getDPI().y
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95 + 0.0000001);
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96 }
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97
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98 int zoomLineWidth(int w) {
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99 return cast(int)(w * zoom);
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100 }
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101
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102 }