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annotate dwtx/draw2d/text/LineBox.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.text.LineBox;
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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 import dwtx.draw2d.text.CompositeBox;
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18 import dwtx.draw2d.text.FlowBox;
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19
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20 /**
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21 * @author hudsonr
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22 * @since 2.1
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23 */
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24 public abstract class LineBox
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25 : CompositeBox
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26 {
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27
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28 /**
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29 * The maximum ascent of all contained fragments.
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30 */
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31 int contentAscent;
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32
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33 /**
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34 * The maximum descent of all contained fragments.
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35 */
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36 int contentDescent;
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37
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38 List fragments;
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39
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40 public this(){
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41 fragments = new ArrayList();
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42 }
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43
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44 /**
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45 * @see dwtx.draw2d.text.CompositeBox#add(dwtx.draw2d.text.FlowBox)
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46 */
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47 public void add(FlowBox child) {
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48 fragments.add(child);
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49 width += child.getWidth();
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50 contentAscent = Math.max(contentAscent, child.getOuterAscent());
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51 contentDescent = Math.max(contentDescent, child.getOuterDescent());
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52 }
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53
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54 /**
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55 * @see dwtx.draw2d.text.FlowBox#getAscent()
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56 */
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57 public int getAscent() {
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58 int ascent = 0;
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59 for (int i = 0; i < fragments.size(); i++)
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60 ascent = Math.max(ascent, (cast(FlowBox)fragments.get(i)).getAscent());
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61 return ascent;
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62 }
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63
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64 /**
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65 * Returns the remaining width available for line content.
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66 * @return the available width in pixels
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67 */
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68 int getAvailableWidth() {
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69 if (recommendedWidth < 0)
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70 return Integer.MAX_VALUE;
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71 return recommendedWidth - getWidth();
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72 }
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73
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74 int getBottomMargin() {
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75 return 0;
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76 }
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77
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78 /**
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79 * @see dwtx.draw2d.text.FlowBox#getDescent()
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80 */
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81 public int getDescent() {
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82 int descent = 0;
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83 for (int i = 0; i < fragments.size(); i++)
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84 descent = Math.max(descent, (cast(FlowBox)fragments.get(i)).getDescent());
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85 return descent;
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86 }
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87
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88 /**
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89 * @return Returns the fragments.
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90 */
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91 List getFragments() {
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92 return fragments;
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93 }
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94
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95 int getTopMargin() {
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96 return 0;
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97 }
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98
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99 /**
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100 * @return <code>true</code> if this box contains any fragments
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101 */
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102 public bool isOccupied() {
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103 return !fragments.isEmpty();
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104 }
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105
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106 /**
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107 * @see dwtx.draw2d.text.FlowBox#requiresBidi()
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108 */
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109 public bool requiresBidi() {
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110 for (Iterator iter = getFragments().iterator(); iter.hasNext();) {
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111 FlowBox box = cast(FlowBox)iter.next();
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112 if (box.requiresBidi())
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113 return true;
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114 }
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115 return false;
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116 }
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117
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118 }