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annotate snippets/printing/Snippet133.d @ 166:9824a8aba726

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Changed line endings to unix
author Frank Benoit <benoit@tionex.de>
date Sat, 13 Sep 2008 14:10:29 +0200
parents 513c72ba21f1
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2004 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 * D Port:
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11 * Adam Chrapkowski <adam DOT chrapkowski AT gmail DOT com>
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12 *******************************************************************************/
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13 module printing.Snippet133;
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14
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15 /*
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16 * Printing example snippet: print text to printer, with word wrap and pagination
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17 *
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18 * For a list of all SWT example snippets see
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19 * http://www.eclipse.org/swt/snippets/
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20 */
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21
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22 // dwt
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23 import dwt.DWT;
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24 // dwt.graphics
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25 import dwt.graphics.Color,
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26 dwt.graphics.Font,
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27 dwt.graphics.FontData,
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28 dwt.graphics.GC,
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29 dwt.graphics.Rectangle,
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30 dwt.graphics.RGB;
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31 // dwt.widgets
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32 import dwt.widgets.Display,
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33 dwt.widgets.ColorDialog,
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34 dwt.widgets.FileDialog,
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35 dwt.widgets.FontDialog,
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36 dwt.widgets.Menu,
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37 dwt.widgets.MenuItem,
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38 dwt.widgets.MessageBox,
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39 dwt.widgets.Shell,
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40 dwt.widgets.Text;
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41 // dwt.events
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42 import dwt.events.SelectionAdapter,
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43 dwt.events.SelectionEvent;
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44 // dwt.layout
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45 import dwt.layout.FillLayout;
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46 // dwt.printing
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47 import dwt.printing.PrintDialog,
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48 dwt.printing.Printer,
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49 dwt.printing.PrinterData;
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50 // dwt.dwthelper
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51 import dwt.dwthelper.utils;
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52
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53 // tango
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54 import tango.core.Thread;
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55 import tango.io.File;
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56 import tango.text.Unicode;
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57
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58 public void
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59 main(String[] args){
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60 (new Snippet133).open();
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61 }
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62
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63 class Snippet133{
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64 Display display;
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65 Shell shell;
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66 Text text;
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67 Font font;
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68 Color foregroundColor, backgroundColor;
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69
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70 Printer printer;
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71 GC gc;
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72 FontData[] printerFontData;
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73 RGB printerForeground, printerBackground;
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74
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75 int lineHeight = 0;
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76 int tabWidth = 0;
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77 int leftMargin, rightMargin, topMargin, bottomMargin;
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78 int x, y;
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79 int index, end;
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80 String textToPrint;
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81 String tabs;
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82 StringBuffer wordBuffer;
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83
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84 public void
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85 open(){
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86 display = new Display();
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87 shell = new Shell(display);
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88 shell.setLayout(new FillLayout());
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89 shell.setText("Print Text");
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90 text = new Text(shell, DWT.BORDER | DWT.MULTI | DWT.V_SCROLL | DWT.H_SCROLL);
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91
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92 Menu menuBar = new Menu(shell, DWT.BAR);
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93 shell.setMenuBar(menuBar);
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94 MenuItem item = new MenuItem(menuBar, DWT.CASCADE);
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95 item.setText("&File");
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96 Menu fileMenu = new Menu(shell, DWT.DROP_DOWN);
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97 item.setMenu(fileMenu);
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98 item = new MenuItem(fileMenu, DWT.PUSH);
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99 item.setText("&Open...");
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100 item.setAccelerator(DWT.CTRL + 'O');
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101 item.addSelectionListener(new class() SelectionAdapter{
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102 public void
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103 widgetSelected(SelectionEvent event) {
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104 menuOpen();
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105 }
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106 });
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107 item = new MenuItem(fileMenu, DWT.PUSH);
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108 item.setText("Font...");
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109 item.addSelectionListener(new class() SelectionAdapter{
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110 public void
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111 widgetSelected(SelectionEvent event){
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112 menuFont();
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113 }
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114 });
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115 item = new MenuItem(fileMenu, DWT.PUSH);
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116 item.setText("Foreground Color...");
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117 item.addSelectionListener(new class() SelectionAdapter{
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118 public void
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119 widgetSelected(SelectionEvent event){
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120 menuForegroundColor();
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121 }
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122 });
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123 item = new MenuItem(fileMenu, DWT.PUSH);
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124 item.setText("Background Color...");
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125 item.addSelectionListener(new class() SelectionAdapter{
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126 public void
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127 widgetSelected(SelectionEvent event) {
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128 menuBackgroundColor();
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129 }
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130 });
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131 item = new MenuItem(fileMenu, DWT.PUSH);
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132 item.setText("&Print...");
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133 item.setAccelerator(DWT.CTRL + 'P');
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134 item.addSelectionListener(new class() SelectionAdapter{
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135 public void
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136 widgetSelected(SelectionEvent event) {
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137 menuPrint();
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138 }
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139 });
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140 new MenuItem(fileMenu, DWT.SEPARATOR);
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141 item = new MenuItem(fileMenu, DWT.PUSH);
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142 item.setText("E&xit");
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143 item.addSelectionListener(new class() SelectionAdapter{
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144 public void
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145 widgetSelected(SelectionEvent event){
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146 System.exit(0);
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147 }
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148 });
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149
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150 shell.open();
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151 while (!shell.isDisposed()) {
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152 if (!display.readAndDispatch()) display.sleep();
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153 }
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154 if (font !is null) font.dispose();
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155 if (foregroundColor !is null) foregroundColor.dispose();
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156 if (backgroundColor !is null) backgroundColor.dispose();
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157 display.dispose();
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158 }
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159
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160 private void
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161 menuOpen(){
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162 String textString;
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163 FileDialog dialog = new FileDialog(shell, DWT.OPEN);
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164 dialog.setFilterExtensions(["*.java", "*.*"]);
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parents: 165
diff changeset
165 String name = dialog.open();
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parents: 165
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166 if(name is null) return;
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parents: 165
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167
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parents: 165
diff changeset
168 try{
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parents: 165
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169 scope File file = new File(name);
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parents: 165
diff changeset
170 try{
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parents: 165
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171 textString = cast(char[])file.read;
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parents: 165
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172 }
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parents: 165
diff changeset
173 catch (IOException e){
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parents: 165
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174 MessageBox box = new MessageBox(shell, DWT.ICON_ERROR);
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parents: 165
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175 box.setMessage("Error reading file:\n" ~ name);
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parents: 165
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176 box.open();
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parents: 165
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177 return;
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parents: 165
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178 }
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parents: 165
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179 }
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parents: 165
diff changeset
180 catch(Exception e){
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parents: 165
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181 MessageBox box = new MessageBox(shell, DWT.ICON_ERROR);
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parents: 165
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182 box.setMessage("File not found:\n" ~ name);
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parents: 165
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183 box.open();
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parents: 165
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184 return;
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parents: 165
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185 }
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parents: 165
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186 text.setText(textString);
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parents: 165
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187 }
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parents: 165
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188
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189 private void
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parents: 165
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190 menuFont(){
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parents: 165
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191 FontDialog fontDialog = new FontDialog(shell);
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parents: 165
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192 fontDialog.setFontList(text.getFont().getFontData());
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parents: 165
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193 FontData fontData = fontDialog.open();
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parents: 165
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194 if(fontData !is null){
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parents: 165
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195 if(font !is null) font.dispose();
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parents: 165
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196 font = new Font(display, fontData);
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197 text.setFont(font);
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parents: 165
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198 }
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parents: 165
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199 }
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parents: 165
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200
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201 private void
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202 menuForegroundColor(){
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203 ColorDialog colorDialog = new ColorDialog(shell);
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204 colorDialog.setRGB(text.getForeground().getRGB());
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205 RGB rgb = colorDialog.open();
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parents: 165
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206 if(rgb !is null){
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parents: 165
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207 if(foregroundColor !is null) foregroundColor.dispose();
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parents: 165
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208 foregroundColor = new Color(display, rgb);
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209 text.setForeground(foregroundColor);
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parents: 165
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210 }
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parents: 165
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211 }
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parents: 165
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212
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213 private void
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parents: 165
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214 menuBackgroundColor(){
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215 ColorDialog colorDialog = new ColorDialog(shell);
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parents: 165
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216 colorDialog.setRGB(text.getBackground().getRGB());
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parents: 165
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217 RGB rgb = colorDialog.open();
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parents: 165
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218 if(rgb !is null){
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parents: 165
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219 if(backgroundColor !is null) backgroundColor.dispose();
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parents: 165
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220 backgroundColor = new Color(display, rgb);
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parents: 165
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221 text.setBackground(backgroundColor);
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parents: 165
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222 }
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parents: 165
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223 }
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parents: 165
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224
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225 private void
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parents: 165
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226 menuPrint(){
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parents: 165
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227 PrintDialog dialog = new PrintDialog(shell, DWT.NONE);
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parents: 165
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228 PrinterData data = dialog.open();
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parents: 165
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229 if(data is null) return;
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parents: 165
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230 if(data.printToFile){
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parents: 165
diff changeset
231 data.fileName = "print.out"; // you probably want to ask the user for a filename
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parents: 165
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232 }
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233
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parents: 165
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234 /* Get the text to print from the Text widget (you could get it from anywhere, i.e. your java model) */
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parents: 165
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235 textToPrint = text.getText();
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parents: 165
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236
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parents: 165
diff changeset
237 /* Get the font & foreground & background data. */
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parents: 165
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238 printerFontData = text.getFont().getFontData();
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parents: 165
diff changeset
239 printerForeground = text.getForeground().getRGB();
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parents: 165
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240 printerBackground = text.getBackground().getRGB();
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parents: 165
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241
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parents: 165
diff changeset
242 /* Do the printing in a background thread so that spooling does not freeze the UI. */
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parents: 165
diff changeset
243 printer = new Printer(data);
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parents: 165
diff changeset
244 Thread printingThread = new class ("Printing") Thread{
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parents: 165
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245 private void
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parents: 165
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246 run(){
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parents: 165
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247 print(printer);
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parents: 165
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248 printer.dispose();
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parents: 165
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249 }
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parents: 165
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250 public
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parents: 165
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251 this(char[] o_name){
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parents: 165
diff changeset
252 this.name = o_name;
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parents: 165
diff changeset
253 super(&run);
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parents: 165
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254 }
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parents: 165
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255 };
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parents: 165
diff changeset
256 printingThread.start();
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parents: 165
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257 }
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parents: 165
diff changeset
258
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parents: 165
diff changeset
259 private void
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parents: 165
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260 print(Printer printer){
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parents: 165
diff changeset
261 if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list
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parents: 165
diff changeset
262 Rectangle clientArea = printer.getClientArea();
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parents: 165
diff changeset
263 Rectangle trim = printer.computeTrim(0, 0, 0, 0);
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parents: 165
diff changeset
264 Point dpi = printer.getDPI();
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parents: 165
diff changeset
265 leftMargin = dpi.x + trim.x; // one inch from left side of paper
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parents: 165
diff changeset
266 rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper
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parents: 165
diff changeset
267 topMargin = dpi.y + trim.y; // one inch from top edge of paper
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parents: 165
diff changeset
268 bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper
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parents: 165
diff changeset
269
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parents: 165
diff changeset
270 /* Create a buffer for computing tab width. */
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parents: 165
diff changeset
271 int tabSize = 4; // is tab width a user setting in your UI?
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parents: 165
diff changeset
272 StringBuffer tabBuffer = new StringBuffer(tabSize);
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parents: 165
diff changeset
273 for (int i = 0; i < tabSize; i++) tabBuffer.append(' ');
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parents: 165
diff changeset
274 tabs = tabBuffer.toString();
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parents: 165
diff changeset
275
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parents: 165
diff changeset
276 /* Create printer GC, and create and set the printer font & foreground color. */
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parents: 165
diff changeset
277 gc = new GC(printer);
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parents: 165
diff changeset
278 Font printerFont = new Font(printer, printerFontData);
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parents: 165
diff changeset
279 Color printerForegroundColor = new Color(printer, printerForeground);
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parents: 165
diff changeset
280 Color printerBackgroundColor = new Color(printer, printerBackground);
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parents: 165
diff changeset
281
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parents: 165
diff changeset
282 gc.setFont(printerFont);
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parents: 165
diff changeset
283 gc.setForeground(printerForegroundColor);
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parents: 165
diff changeset
284 gc.setBackground(printerBackgroundColor);
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parents: 165
diff changeset
285 tabWidth = gc.stringExtent(tabs).x;
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parents: 165
diff changeset
286 lineHeight = gc.getFontMetrics().getHeight();
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parents: 165
diff changeset
287
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parents: 165
diff changeset
288 /* Print text to current gc using word wrap */
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parents: 165
diff changeset
289 printText();
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parents: 165
diff changeset
290 printer.endJob();
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parents: 165
diff changeset
291
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parents: 165
diff changeset
292 /* Cleanup graphics resources used in printing */
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parents: 165
diff changeset
293 printerFont.dispose();
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parents: 165
diff changeset
294 printerForegroundColor.dispose();
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
295 printerBackgroundColor.dispose();
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parents: 165
diff changeset
296 gc.dispose();
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parents: 165
diff changeset
297 }
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parents: 165
diff changeset
298 }
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parents: 165
diff changeset
299
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parents: 165
diff changeset
300 private void
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parents: 165
diff changeset
301 printText(){
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parents: 165
diff changeset
302 printer.startPage();
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parents: 165
diff changeset
303 wordBuffer = new StringBuffer();
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parents: 165
diff changeset
304 x = leftMargin;
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parents: 165
diff changeset
305 y = topMargin;
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parents: 165
diff changeset
306 index = 0;
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parents: 165
diff changeset
307 end = textToPrint.length;
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parents: 165
diff changeset
308 while(index < end){
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parents: 165
diff changeset
309 char c = textToPrint.charAt(index);
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parents: 165
diff changeset
310 index++;
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parents: 165
diff changeset
311 if(c != 0){
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parents: 165
diff changeset
312 if(c == 0x0a || c == 0x0d){
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parents: 165
diff changeset
313 if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
314 index++; // if this is cr-lf, skip the lf
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parents: 165
diff changeset
315 }
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parents: 165
diff changeset
316 printWordBuffer();
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
317 newline();
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parents: 165
diff changeset
318 }
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
319 else{
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parents: 165
diff changeset
320 if(c != '\t'){
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parents: 165
diff changeset
321 wordBuffer.append(c);
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parents: 165
diff changeset
322 }
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parents: 165
diff changeset
323 if(isPrintable(c)){
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parents: 165
diff changeset
324 printWordBuffer();
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
325 if (c == '\t'){
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parents: 165
diff changeset
326 x += tabWidth;
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
327 }
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
328 }
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Frank Benoit <benoit@tionex.de>
parents: 165
diff changeset
329 }
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Frank Benoit <benoit@tionex.de>
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330 }
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331 }
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332 if (y + lineHeight <= bottomMargin) {
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333 printer.endPage();
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334 }
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335 }
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336
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337 private void
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338 printWordBuffer(){
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339 if(wordBuffer.length > 0){
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340 String word = wordBuffer.toString();
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341 int wordWidth = gc.stringExtent(word).x;
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342 if(x + wordWidth > rightMargin){
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343 /* word doesn't fit on current line, so wrap */
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344 newline();
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345 }
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346 gc.drawString(word, x, y, false);
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347 x += wordWidth;
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348 wordBuffer = new StringBuffer();
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349 }
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350 }
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351
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352 private void
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353 newline(){
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354 x = leftMargin;
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355 y += lineHeight;
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356 if(y + lineHeight > bottomMargin){
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357 printer.endPage();
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358 if(index + 1 < end){
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359 y = topMargin;
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360 printer.startPage();
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361 }
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362 }
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363 }
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364 }
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365