Mercurial > projects > dwt2
annotate org.eclipse.draw2d/src/org/eclipse/draw2d/text/FlowAdapter.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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1 /******************************************************************************* |
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2 * Copyright (c) 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 org.eclipse.draw2d.text.FlowAdapter; |
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14 |
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15 import java.lang.all; |
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16 |
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17 import org.eclipse.draw2d.IFigure; |
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18 import org.eclipse.draw2d.geometry.Dimension; |
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19 import org.eclipse.draw2d.geometry.Rectangle; |
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20 import org.eclipse.draw2d.text.FlowFigure; |
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21 import org.eclipse.draw2d.text.BidiProcessor; |
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22 import org.eclipse.draw2d.text.FlowFigureLayout; |
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23 import org.eclipse.draw2d.text.FlowContext; |
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24 import org.eclipse.draw2d.text.ContentBox; |
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25 import org.eclipse.draw2d.text.BidiInfo; |
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26 import org.eclipse.draw2d.text.BidiChars; |
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27 |
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28 |
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29 /** |
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30 * Adapts non-flow figures for use within a parent hierarchy requiring flow figures. |
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31 * Normal draw2d figures can be added as children. If a normal LayoutManager is set, the |
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32 * children will be positioned by that layout manager. The size of this figure within |
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33 * the flow will be determined by its preferred size. |
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34 * <p> |
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35 * WARNING: This class is not intended to be subclassed by clients. |
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36 * |
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37 * @author Pratik Shah |
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38 * @since 3.1 |
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39 */ |
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40 public class FlowAdapter |
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41 : FlowFigure |
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42 { |
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43 |
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44 private FlowContext context; |
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45 private FigureBox box; |
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46 |
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47 public this(){ |
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48 box = new FigureBox(); |
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49 } |
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50 /** |
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51 * This FlowFigure contributes an Object Replacement Character. |
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52 * @see FlowFigure#contributeBidi(BidiProcessor) |
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53 */ |
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54 protected void contributeBidi(BidiProcessor proc) { |
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55 box.setBidiLevel(-1); |
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56 // contributes a single object replacement char |
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57 proc.add(this, BidiChars.OBJ); |
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58 } |
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59 |
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60 /** |
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61 * @return <code>null</code> |
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62 * @see org.eclipse.draw2d.text.FlowFigure#createDefaultFlowLayout() |
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63 */ |
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64 protected FlowFigureLayout createDefaultFlowLayout() { |
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65 return null; |
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66 } |
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67 |
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68 /** |
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69 * Sizes the content box to be big enough to display all figures. Wraps to the next line |
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70 * if there is not enough room on the current one. |
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71 * @see org.eclipse.draw2d.Figure#layout() |
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72 */ |
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73 protected void layout() { |
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74 int wHint = context.getRemainingLineWidth(); |
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75 if (wHint is Integer.MAX_VALUE) |
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76 wHint = -1; |
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77 Dimension prefSize = getPreferredSize(wHint, -1); |
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78 if (context.isCurrentLineOccupied() |
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79 && prefSize.width > context.getRemainingLineWidth()) { |
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80 context.endLine(); |
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81 prefSize = getPreferredSize(context.getRemainingLineWidth(), -1); |
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82 } |
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83 box.setSize(prefSize); |
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84 context.addToCurrentLine(box); |
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85 } |
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86 |
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87 /** |
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88 * Updates the bounds of this figure to match that of its content box, and lays out this |
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89 * figure's children. |
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90 * @see FlowFigure#postValidate() |
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91 */ |
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92 public void postValidate() { |
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93 setBounds(new Rectangle(box.getX(), box.getBaseline() - box.ascent, |
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94 box.width, box.ascent)); |
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95 super.layout(); |
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96 for (Iterator itr = getChildren().iterator(); itr.hasNext();) |
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97 (cast(IFigure)itr.next()).validate(); |
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98 } |
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99 |
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100 /** |
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101 * Sets the bidi level of the content box associated with this Figure |
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102 * @see FlowFigure#setBidiInfo(BidiInfo) |
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103 */ |
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104 public void setBidiInfo(BidiInfo info) { |
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105 box.setBidiLevel(info.levelInfo[0]); |
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106 } |
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107 |
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108 /** |
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109 * @see org.eclipse.draw2d.IFigure#setBounds(org.eclipse.draw2d.geometry.Rectangle) |
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110 */ |
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111 public void setBounds(Rectangle rect) { |
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112 int x = bounds.x, |
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113 y = bounds.y; |
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114 |
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115 bool resize = (rect.width !is bounds.width) || (rect.height !is bounds.height), |
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116 translate = (rect.x !is x) || (rect.y !is y); |
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117 |
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118 if ((resize || translate) && isVisible()) |
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119 erase(); |
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120 if (translate) { |
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121 int dx = rect.x - x; |
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122 int dy = rect.y - y; |
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123 primTranslate(dx, dy); |
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124 } |
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125 |
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126 bounds.width = rect.width; |
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127 bounds.height = rect.height; |
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128 |
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129 if (translate || resize) { |
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130 fireFigureMoved(); |
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131 repaint(); |
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132 } |
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133 } |
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134 |
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135 /** |
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136 * @see FlowFigure#setFlowContext(FlowContext) |
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137 */ |
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138 public void setFlowContext(FlowContext flowContext) { |
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139 context = flowContext; |
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140 } |
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141 |
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142 /** |
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143 * Do not validate children. |
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144 * @see org.eclipse.draw2d.IFigure#validate() |
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145 */ |
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146 public void validate() { |
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147 if (isValid()) |
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148 return; |
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149 setValid(true); |
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150 layout(); |
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151 } |
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152 |
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153 private class FigureBox : ContentBox { |
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154 private int ascent; |
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155 public bool containsPoint(int x, int y) { |
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156 return this.outer.containsPoint(x, y); |
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157 } |
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158 public int getAscent() { |
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159 return ascent; |
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160 } |
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161 public int getDescent() { |
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162 return 0; |
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163 } |
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164 public void setSize(Dimension size) { |
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165 ascent = size.height; |
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166 width = size.width; |
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167 } |
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168 } |
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169 |
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170 } |