annotate org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet133.d @ 120:536e43f63c81

Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661 ===D2=== * added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements used these templates to work with strict type storage rules of dmd-2.053 * com.ibm.icu now also compilable with D2, but not tested yet * small fixes Snippet288 - shared data is in TLS ===Phobos=== * fixed critical bugs in Phobos implemention completely incorrect segfault prone fromStringz (Linux's port ruthless killer) terrible, incorrect StringBuffer realization (StyledText killer) * fixed small bugs as well Snippet72 - misprint in the snippet * implemented missed functionality for Phobos ByteArrayOutputStream implemented (image loading available) formatting correctly works for all DWT's cases As a result, folowing snippets now works with Phobos (Snippet### - what is fixed): Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting Snippet48, 282 - crash on image loading Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText Snippet244 - hang-up ===Tango=== * few changes for the latest Tango trunc-r5661 * few small performance improvments ===General=== * implMissing-s for only one version changed to implMissingInTango/InPhobos * incorrect calls to Format in toString-s fixed * fixed loading \uXXXX characters in ResourceBundle * added good UTF-8 support for StyledText, TextLayout (Win32) and friends UTF functions revised and tested. It is now in java.nonstandard.*Utf modules StyledText and TextLayout (Win32) modules revised for UTF-8 support * removed small diferences in most identical files in *.swt.* folders *.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32 now 179 of 576 (~31%) files in *.swt.* folders are fully identical * Win32: snippets now have right subsystem, pretty icons and native system style controls * small fixes in snippets Snippet44 - it's not Snippet44 Snippet212 - functions work with different images and offsets arrays Win32: Snippet282 - crash on close if the button has an image Snippet293 - setGrayed is commented and others Win32: As a result, folowing snippets now works Snippet68 - color doesn't change Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above) Snippet193 - no tabel headers
author Denis Shelomovskij <verylonglogin.reg@gmail.com>
date Sat, 09 Jul 2011 15:50:20 +0300
parents 9f4c18c268b2
children dc6fc593e8d7
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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 org.eclipse.swt.snippets.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 // org.eclipse.swt
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23 import org.eclipse.swt.SWT;
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24 // org.eclipse.swt.graphics
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25 import org.eclipse.swt.graphics.Color,
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26 org.eclipse.swt.graphics.Font,
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27 org.eclipse.swt.graphics.FontData,
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28 org.eclipse.swt.graphics.GC,
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29 org.eclipse.swt.graphics.Rectangle,
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30 org.eclipse.swt.graphics.RGB;
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31 // org.eclipse.swt.widgets
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32 import org.eclipse.swt.widgets.Display,
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33 org.eclipse.swt.widgets.ColorDialog,
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34 org.eclipse.swt.widgets.FileDialog,
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35 org.eclipse.swt.widgets.FontDialog,
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36 org.eclipse.swt.widgets.Menu,
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37 org.eclipse.swt.widgets.MenuItem,
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38 org.eclipse.swt.widgets.MessageBox,
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39 org.eclipse.swt.widgets.Shell,
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40 org.eclipse.swt.widgets.Text;
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41 // org.eclipse.swt.events
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42 import org.eclipse.swt.events.SelectionAdapter,
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43 org.eclipse.swt.events.SelectionEvent;
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44 // org.eclipse.swt.layout
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45 import org.eclipse.swt.layout.FillLayout;
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46 // org.eclipse.swt.printing
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47 import org.eclipse.swt.printing.PrintDialog,
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48 org.eclipse.swt.printing.Printer,
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49 org.eclipse.swt.printing.PrinterData;
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50 // java
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51 import java.lang.all;
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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 version(Tango){
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56 import tango.io.device.File;
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57 import tango.text.Unicode;
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58 } else { // Phobos
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59 import std.file;
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60 import std.ctype;
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61 alias isprint isPrintable;
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62 }
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64 void main(){
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65 (new Snippet133).open();
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66 }
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67
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68 class Snippet133{
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69 Display display;
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70 Shell shell;
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71 Text text;
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72 Font font;
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73 Color foregroundColor, backgroundColor;
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74
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75 Printer printer;
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76 GC gc;
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77 FontData[] printerFontData;
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78 RGB printerForeground, printerBackground;
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79
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80 int lineHeight = 0;
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81 int tabWidth = 0;
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82 int leftMargin, rightMargin, topMargin, bottomMargin;
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83 int x, y;
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84 int index, end;
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85 String textToPrint;
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86 String tabs;
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87 StringBuffer wordBuffer;
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88
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89 public void
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90 open(){
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91 display = new Display();
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92 shell = new Shell(display);
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93 shell.setLayout(new FillLayout());
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94 shell.setText("Print Text");
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95 text = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
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96
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97 Menu menuBar = new Menu(shell, SWT.BAR);
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98 shell.setMenuBar(menuBar);
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99 MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
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100 item.setText("&File");
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101 Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
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102 item.setMenu(fileMenu);
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103 item = new MenuItem(fileMenu, SWT.PUSH);
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104 item.setText("&Open...");
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105 item.setAccelerator(SWT.CTRL + 'O');
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106 item.addSelectionListener(new class SelectionAdapter{
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107 public void widgetSelected(SelectionEvent event) {
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108 menuOpen();
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109 }
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110 });
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111 item = new MenuItem(fileMenu, SWT.PUSH);
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112 item.setText("Font...");
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113 item.addSelectionListener(new class SelectionAdapter{
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114 public void widgetSelected(SelectionEvent event){
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115 menuFont();
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116 }
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117 });
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118 item = new MenuItem(fileMenu, SWT.PUSH);
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119 item.setText("Foreground Color...");
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120 item.addSelectionListener(new class SelectionAdapter{
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121 public void widgetSelected(SelectionEvent event){
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122 menuForegroundColor();
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123 }
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124 });
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125 item = new MenuItem(fileMenu, SWT.PUSH);
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126 item.setText("Background Color...");
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127 item.addSelectionListener(new class SelectionAdapter{
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128 public void widgetSelected(SelectionEvent event) {
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129 menuBackgroundColor();
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130 }
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131 });
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132 item = new MenuItem(fileMenu, SWT.PUSH);
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133 item.setText("&Print...");
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134 item.setAccelerator(SWT.CTRL + 'P');
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135 item.addSelectionListener(new class SelectionAdapter{
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136 public void 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, SWT.SEPARATOR);
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141 item = new MenuItem(fileMenu, SWT.PUSH);
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142 item.setText("E&xit");
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143 item.addSelectionListener(new class SelectionAdapter{
30
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144 public void widgetSelected(SelectionEvent event){
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145 System.exit(0);
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146 }
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147 });
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148
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149 shell.open();
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150 while (!shell.isDisposed()) {
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151 if (!display.readAndDispatch()) display.sleep();
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152 }
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153 if (font !is null) font.dispose();
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154 if (foregroundColor !is null) foregroundColor.dispose();
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155 if (backgroundColor !is null) backgroundColor.dispose();
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156 display.dispose();
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157 }
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158
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159 private void menuOpen(){
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160 String textString;
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161 FileDialog dialog = new FileDialog(shell, SWT.OPEN);
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162 dialog.setFilterExtensions(["*.java", "*.*"]);
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163 String name = dialog.open();
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164 if(name is null) return;
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165
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166 try{
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167 try{
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168 version(Tango){
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169 textString = cast(char[])File.get(name);
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170 } else { // Phobos
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171 textString = cast(String)std.file.read(name);
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172 }
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173 }
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174 catch (IOException e){
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175 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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176 box.setMessage("Error reading file:\n" ~ name);
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177 box.open();
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178 return;
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179 }
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180 }
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181 catch(Exception e){
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182 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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183 box.setMessage("File not found:\n" ~ name);
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184 box.open();
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185 return;
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186 }
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187 text.setText(textString);
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188 }
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189
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190 private void
30
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191 menuFont(){
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192 FontDialog fontDialog = new FontDialog(shell);
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193 fontDialog.setFontList(text.getFont().getFontData());
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194 FontData fontData = fontDialog.open();
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195 if(fontData !is null){
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196 if(font !is null) font.dispose();
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197 font = new Font(display, fontData);
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198 text.setFont(font);
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199 }
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200 }
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201
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202 private void
30
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203 menuForegroundColor(){
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204 ColorDialog colorDialog = new ColorDialog(shell);
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205 colorDialog.setRGB(text.getForeground().getRGB());
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206 RGB rgb = colorDialog.open();
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207 if(rgb !is null){
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208 if(foregroundColor !is null) foregroundColor.dispose();
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209 foregroundColor = new Color(display, rgb);
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210 text.setForeground(foregroundColor);
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211 }
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212 }
30
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213
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214 private void
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215 menuBackgroundColor(){
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216 ColorDialog colorDialog = new ColorDialog(shell);
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217 colorDialog.setRGB(text.getBackground().getRGB());
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218 RGB rgb = colorDialog.open();
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219 if(rgb !is null){
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220 if(backgroundColor !is null) backgroundColor.dispose();
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221 backgroundColor = new Color(display, rgb);
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222 text.setBackground(backgroundColor);
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223 }
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224 }
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225
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226 private void
30
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227 menuPrint(){
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228 PrintDialog dialog = new PrintDialog(shell, SWT.NONE);
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229 PrinterData data = dialog.open();
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230 if(data is null) return;
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231 if(data.printToFile){
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232 data.fileName = "print.out"; // you probably want to ask the user for a filename
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233 }
30
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234
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235 /* Get the text to print from the Text widget (you could get it from anywhere, i.e. your java model) */
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236 textToPrint = text.getText();
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237
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238 /* Get the font & foreground & background data. */
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239 printerFontData = text.getFont().getFontData();
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240 printerForeground = text.getForeground().getRGB();
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241 printerBackground = text.getBackground().getRGB();
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242
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243 /* Do the printing in a background thread so that spooling does not freeze the UI. */
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244 printer = new Printer(data);
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245 Thread printingThread = new class ("Printing") Thread{
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246 private void
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247 run(){
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248 print(printer);
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249 printer.dispose();
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250 }
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diff changeset
251 public
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252 this(String o_name){
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diff changeset
253 //this.name = o_name;
30
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254 super(&run);
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255 }
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256 };
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257 printingThread.start();
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258 }
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259
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260 private void
30
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261 print(Printer printer){
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262 if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list
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263 Rectangle clientArea = printer.getClientArea();
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264 Rectangle trim = printer.computeTrim(0, 0, 0, 0);
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265 Point dpi = printer.getDPI();
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266 leftMargin = dpi.x + trim.x; // one inch from left side of paper
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267 rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper
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268 topMargin = dpi.y + trim.y; // one inch from top edge of paper
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269 bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper
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270
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271 /* Create a buffer for computing tab width. */
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272 int tabSize = 4; // is tab width a user setting in your UI?
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273 StringBuffer tabBuffer = new StringBuffer(tabSize);
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274 for (int i = 0; i < tabSize; i++) tabBuffer.append(' ');
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diff changeset
275 tabs = tabBuffer.toString();
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276
30
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277 /* Create printer GC, and create and set the printer font & foreground color. */
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278 gc = new GC(printer);
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279 Font printerFont = new Font(printer, printerFontData);
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280 Color printerForegroundColor = new Color(printer, printerForeground);
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281 Color printerBackgroundColor = new Color(printer, printerBackground);
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282
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283 gc.setFont(printerFont);
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284 gc.setForeground(printerForegroundColor);
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285 gc.setBackground(printerBackgroundColor);
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diff changeset
286 tabWidth = gc.stringExtent(tabs).x;
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diff changeset
287 lineHeight = gc.getFontMetrics().getHeight();
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diff changeset
288
30
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diff changeset
289 /* Print text to current gc using word wrap */
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diff changeset
290 printText();
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diff changeset
291 printer.endJob();
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diff changeset
292
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diff changeset
293 /* Cleanup graphics resources used in printing */
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diff changeset
294 printerFont.dispose();
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diff changeset
295 printerForegroundColor.dispose();
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diff changeset
296 printerBackgroundColor.dispose();
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diff changeset
297 gc.dispose();
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diff changeset
298 }
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299 }
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300
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301 private void
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302 printText(){
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303 printer.startPage();
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304 wordBuffer = new StringBuffer();
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305 x = leftMargin;
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306 y = topMargin;
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307 index = 0;
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308 end = textToPrint.length;
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309 while(index < end){
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310 char c = textToPrint.charAt(index);
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311 index++;
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312 if(c != 0){
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313 if(c == 0x0a || c == 0x0d){
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314 if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){
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315 index++; // if this is cr-lf, skip the lf
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316 }
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317 printWordBuffer();
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318 newline();
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319 }
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320 else{
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321 if(c != '\t'){
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322 wordBuffer.append(c);
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323 }
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324 if(isPrintable(c)){
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325 printWordBuffer();
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326 if (c == '\t'){
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327 x += tabWidth;
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328 }
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329 }
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330 }
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331 }
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332 }
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333 if (y + lineHeight <= bottomMargin) {
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334 printer.endPage();
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335 }
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336 }
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337
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338 private void
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339 printWordBuffer(){
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340 if(wordBuffer.length > 0){
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341 String word = wordBuffer.toString();
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342 int wordWidth = gc.stringExtent(word).x;
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343 if(x + wordWidth > rightMargin){
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344 /* word doesn't fit on current line, so wrap */
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345 newline();
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346 }
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347 gc.drawString(word, x, y, false);
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348 x += wordWidth;
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349 wordBuffer = new StringBuffer();
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350 }
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351 }
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352
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353 private void
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354 newline(){
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355 x = leftMargin;
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356 y += lineHeight;
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357 if(y + lineHeight > bottomMargin){
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358 printer.endPage();
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359 if(index + 1 < end){
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360 y = topMargin;
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361 printer.startPage();
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362 }
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363 }
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364 }
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365 }
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366