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annotate dwtx/draw2d/CompoundBorder.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.CompoundBorder;
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14
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15 import dwt.dwthelper.utils;
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16
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17 import dwtx.draw2d.geometry.Dimension;
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18 import dwtx.draw2d.geometry.Insets;
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19
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20 import dwtx.draw2d.AbstractBorder;
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21 import dwtx.draw2d.Border;
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22 import dwtx.draw2d.IFigure;
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23 import dwtx.draw2d.Graphics;
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24
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25 /**
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26 * CompoundBorder allows for the nesting of two borders. The nested borders are referred
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27 * to as the <i>inner</i> and <i>outer</i> borders.
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28 */
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29 public class CompoundBorder
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30 : AbstractBorder
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31 {
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32
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33 /** The inner Border. */
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34 protected Border inner;
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35 /** The outer Border. */
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36 protected Border outer;
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37
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38 /**
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39 * Constructs a default CompoundBorder with no borders under it.
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40 *
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41 * @since 2.0
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42 */
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43 public this() { }
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44
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45 /**
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46 * Constructs a CompoundBorder with the two borders specified as input.
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47 *
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48 * @param outer Border which is drawn on the outside
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49 * @param inner Border which is drawn inside the outer border
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50 *
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51 * @since 2.0
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52 */
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53 public this(Border outer, Border inner) {
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54 this.outer = outer;
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55 this.inner = inner;
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56 }
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57
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58 /**
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59 * Returns the inner border of this CompoundBorder.
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60 *
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61 * @return The inner border
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62 * @since 2.0
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63 */
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64 public Border getInnerBorder() {
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65 return inner;
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66 }
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67
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68 /**
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69 * Returns the total insets required to hold both the inner and outer borders of this
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70 * CompoundBorder.
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71 *
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72 * @param figure Figure for which this is the border
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73 * @return The total insets for this border
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74 * @since 2.0
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75 */
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76 public Insets getInsets(IFigure figure) {
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77 Insets insets = null;
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78 if (inner !is null)
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79 insets = inner.getInsets(figure);
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80 else
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81 insets = new Insets();
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82 if (outer !is null) {
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83 Insets moreInsets = outer.getInsets(figure);
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84 insets = insets.getAdded(moreInsets);
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85 }
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86 return insets;
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87 }
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88
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89 /**
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90 * @see dwtx.draw2d.Border#getPreferredSize(IFigure)
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91 */
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92 public Dimension getPreferredSize(IFigure fig) {
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93 Dimension prefSize = new Dimension(inner.getPreferredSize(fig));
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94 Insets outerInsets = outer.getInsets(fig);
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95 prefSize.expand(outerInsets.getWidth(), outerInsets.getHeight());
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96 prefSize.union_(outer.getPreferredSize(fig));
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97 return prefSize;
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98 }
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99
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100 /**
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101 * Returns the outer border of this CompoundBorder.
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102 *
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103 * @return The outer border
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104 * @since 2.0
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105 */
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106 public Border getOuterBorder() {
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107 return outer;
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108 }
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109
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110 /**
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111 * Returns <code>true</code> if this border is opaque. Return value is dependent on the
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112 * opaque state of both the borders it contains. Both borders have to be opaque for this
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113 * border to be opaque. In the absence of any of the borders, this border is not opaque.
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114 *
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115 * @return <code>true</code> if this border is opaque
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116 */
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117 public bool isOpaque() {
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118 return ((inner !is null) ? inner.isOpaque() : false)
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119 && ((outer !is null) ? outer.isOpaque() : false);
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120 }
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121
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122 /**
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123 * @see dwtx.draw2d.Border#paint(IFigure, Graphics, Insets)
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124 */
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125 public void paint(IFigure figure, Graphics g, Insets insets) {
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126 if (outer !is null) {
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127 g.pushState();
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128 outer.paint(figure, g, insets);
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129 g.popState();
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130
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131 insets = insets.getAdded(outer.getInsets(figure));
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132 }
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133 if (inner !is null)
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134 inner.paint(figure, g, insets);
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135 }
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136
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137 }