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annotate dwtx/draw2d/text/SimpleTextLayout.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, 2008 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.text.SimpleTextLayout;
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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 dwtx.draw2d.text.TextLayout;
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20 import dwtx.draw2d.text.TextFlow;
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21 import dwtx.draw2d.text.TextFragmentBox;
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22 import dwtx.draw2d.text.FlowUtilities;
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23
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24 /**
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25 * @author hudsonr
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26 * @since 2.1
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27 */
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28 public class SimpleTextLayout : TextLayout {
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29
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30 private static const String[] DELIMITERS = [
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31 "\r\n", //$NON-NLS-1$
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32 "\n", //$NON-NLS-1$
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33 "\r"];//$NON-NLS-1$
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34
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35 private static int result;
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36 private static int delimeterLength;
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37
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38 /**
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39 * Creates a new SimpleTextLayout with the given TextFlow
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40 * @param flow the TextFlow
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41 */
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42 public this(TextFlow flow) {
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43 super (flow);
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44 }
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45
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46 /**
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47 * @see dwtx.draw2d.text.FlowFigureLayout#layout()
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48 */
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49 protected void layout() {
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50 TextFlow textFlow = cast(TextFlow)getFlowFigure();
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51 String text = textFlow.getText();
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52 List fragments = textFlow.getFragments();
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53 Font font = textFlow.getFont();
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54 TextFragmentBox fragment;
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55 int i = 0;
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56 int offset = 0;
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57 FlowUtilities flowUtilities = textFlow.getFlowUtilities_package();
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58
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59 do {
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60 nextLineBreak(text, offset);
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61 fragment = getFragment(i++, fragments);
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62 fragment.length = result - offset;
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63 fragment.offset = offset;
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64 fragment.setWidth(-1);
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65 flowUtilities.setupFragment_package(fragment, font, text.substring(offset, result));
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66 getContext().addToCurrentLine(fragment);
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67 getContext().endLine();
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68 offset = result + delimeterLength;
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69 } while (offset < text.length);
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70 //Remove the remaining unused fragments.
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71 while (i < fragments.size())
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72 fragments.remove(i++);
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73 }
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74
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75 private int nextLineBreak(String text, int offset) {
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76 result = text.length;
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77 delimeterLength = 0;
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78 int current;
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79 for (int i = 0; i < DELIMITERS.length; i++) {
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80 current = text.indexOf(DELIMITERS[i], offset);
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81 if (current !is -1 && current < result) {
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82 result = current;
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83 delimeterLength = DELIMITERS[i].length;
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84 }
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85 }
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86 return result;
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87 }
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88
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89 }