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annotate org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet133.d @ 121:dc6fc593e8d7

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Update for dmd-2.054 and small fixes in java.lang.Character
author Denis Shelomovskij <verylonglogin.reg@gmail.com>
date Tue, 12 Jul 2011 11:59:58 +0300
parents 536e43f63c81
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 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.ascii; //FIXME: no Unicode support in std.ascii.isPrintable
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61 }
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63 void main(){
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64 (new Snippet133).open();
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65 }
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66
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67 class Snippet133{
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68 Display display;
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69 Shell shell;
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70 Text text;
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71 Font font;
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72 Color foregroundColor, backgroundColor;
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73
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74 Printer printer;
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75 GC gc;
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76 FontData[] printerFontData;
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77 RGB printerForeground, printerBackground;
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78
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79 int lineHeight = 0;
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80 int tabWidth = 0;
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81 int leftMargin, rightMargin, topMargin, bottomMargin;
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82 int x, y;
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83 int index, end;
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84 String textToPrint;
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85 String tabs;
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86 StringBuffer wordBuffer;
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87
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88 public void
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89 open(){
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90 display = new Display();
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91 shell = new Shell(display);
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92 shell.setLayout(new FillLayout());
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93 shell.setText("Print Text");
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94 text = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
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95
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96 Menu menuBar = new Menu(shell, SWT.BAR);
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97 shell.setMenuBar(menuBar);
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98 MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
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99 item.setText("&File");
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100 Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
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101 item.setMenu(fileMenu);
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102 item = new MenuItem(fileMenu, SWT.PUSH);
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103 item.setText("&Open...");
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104 item.setAccelerator(SWT.CTRL + 'O');
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105 item.addSelectionListener(new class SelectionAdapter{
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106 public void widgetSelected(SelectionEvent event) {
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107 menuOpen();
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108 }
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109 });
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110 item = new MenuItem(fileMenu, SWT.PUSH);
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111 item.setText("Font...");
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112 item.addSelectionListener(new class SelectionAdapter{
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113 public void widgetSelected(SelectionEvent event){
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114 menuFont();
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115 }
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116 });
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117 item = new MenuItem(fileMenu, SWT.PUSH);
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118 item.setText("Foreground Color...");
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119 item.addSelectionListener(new class SelectionAdapter{
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120 public void widgetSelected(SelectionEvent event){
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121 menuForegroundColor();
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122 }
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123 });
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124 item = new MenuItem(fileMenu, SWT.PUSH);
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125 item.setText("Background Color...");
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126 item.addSelectionListener(new class SelectionAdapter{
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127 public void 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, SWT.PUSH);
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132 item.setText("&Print...");
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133 item.setAccelerator(SWT.CTRL + 'P');
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134 item.addSelectionListener(new class SelectionAdapter{
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135 public void widgetSelected(SelectionEvent event) {
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136 menuPrint();
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137 }
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138 });
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139 new MenuItem(fileMenu, SWT.SEPARATOR);
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140 item = new MenuItem(fileMenu, SWT.PUSH);
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141 item.setText("E&xit");
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142 item.addSelectionListener(new class SelectionAdapter{
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143 public void widgetSelected(SelectionEvent event){
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144 System.exit(0);
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145 }
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146 });
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147
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148 shell.open();
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149 while (!shell.isDisposed()) {
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150 if (!display.readAndDispatch()) display.sleep();
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151 }
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152 if (font !is null) font.dispose();
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153 if (foregroundColor !is null) foregroundColor.dispose();
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154 if (backgroundColor !is null) backgroundColor.dispose();
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155 display.dispose();
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156 }
30
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157
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158 private void menuOpen(){
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159 String textString;
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160 FileDialog dialog = new FileDialog(shell, SWT.OPEN);
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161 dialog.setFilterExtensions(["*.java", "*.*"]);
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162 String name = dialog.open();
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163 if(name is null) return;
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164
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165 try{
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166 try{
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167 version(Tango){
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168 textString = cast(char[])File.get(name);
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169 } else { // Phobos
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170 textString = cast(String)std.file.read(name);
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171 }
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172 }
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173 catch (IOException e){
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174 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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175 box.setMessage("Error reading file:\n" ~ name);
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176 box.open();
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177 return;
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178 }
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179 }
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180 catch(Exception e){
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181 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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182 box.setMessage("File not found:\n" ~ name);
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183 box.open();
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184 return;
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185 }
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186 text.setText(textString);
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187 }
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188
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189 private void
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190 menuFont(){
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191 FontDialog fontDialog = new FontDialog(shell);
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192 fontDialog.setFontList(text.getFont().getFontData());
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193 FontData fontData = fontDialog.open();
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194 if(fontData !is null){
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195 if(font !is null) font.dispose();
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196 font = new Font(display, fontData);
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197 text.setFont(font);
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198 }
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199 }
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200
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201 private void
30
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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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206 if(rgb !is null){
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207 if(foregroundColor !is null) foregroundColor.dispose();
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208 foregroundColor = new Color(display, rgb);
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209 text.setForeground(foregroundColor);
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210 }
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211 }
30
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212
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213 private void
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214 menuBackgroundColor(){
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215 ColorDialog colorDialog = new ColorDialog(shell);
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216 colorDialog.setRGB(text.getBackground().getRGB());
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217 RGB rgb = colorDialog.open();
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218 if(rgb !is null){
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219 if(backgroundColor !is null) backgroundColor.dispose();
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220 backgroundColor = new Color(display, rgb);
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221 text.setBackground(backgroundColor);
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222 }
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223 }
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224
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225 private void
30
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226 menuPrint(){
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227 PrintDialog dialog = new PrintDialog(shell, SWT.NONE);
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228 PrinterData data = dialog.open();
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229 if(data is null) return;
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230 if(data.printToFile){
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231 data.fileName = "print.out"; // you probably want to ask the user for a filename
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232 }
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233
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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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235 textToPrint = text.getText();
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236
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237 /* Get the font & foreground & background data. */
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238 printerFontData = text.getFont().getFontData();
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239 printerForeground = text.getForeground().getRGB();
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240 printerBackground = text.getBackground().getRGB();
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241
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242 /* Do the printing in a background thread so that spooling does not freeze the UI. */
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243 printer = new Printer(data);
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244 Thread printingThread = new class ("Printing") Thread{
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245 private void
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246 run(){
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247 print(printer);
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248 printer.dispose();
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249 }
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250 public
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251 this(String o_name){
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252 //this.name = o_name;
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253 super(&run);
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254 }
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255 };
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256 printingThread.start();
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257 }
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258
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259 private void
30
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260 print(Printer printer){
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261 if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list
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262 Rectangle clientArea = printer.getClientArea();
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263 Rectangle trim = printer.computeTrim(0, 0, 0, 0);
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264 Point dpi = printer.getDPI();
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265 leftMargin = dpi.x + trim.x; // one inch from left side of paper
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266 rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper
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267 topMargin = dpi.y + trim.y; // one inch from top edge of paper
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268 bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper
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269
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270 /* Create a buffer for computing tab width. */
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271 int tabSize = 4; // is tab width a user setting in your UI?
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272 StringBuffer tabBuffer = new StringBuffer(tabSize);
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273 for (int i = 0; i < tabSize; i++) tabBuffer.append(' ');
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274 tabs = tabBuffer.toString();
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275
30
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276 /* Create printer GC, and create and set the printer font & foreground color. */
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277 gc = new GC(printer);
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278 Font printerFont = new Font(printer, printerFontData);
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279 Color printerForegroundColor = new Color(printer, printerForeground);
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280 Color printerBackgroundColor = new Color(printer, printerBackground);
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281
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282 gc.setFont(printerFont);
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283 gc.setForeground(printerForegroundColor);
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284 gc.setBackground(printerBackgroundColor);
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285 tabWidth = gc.stringExtent(tabs).x;
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286 lineHeight = gc.getFontMetrics().getHeight();
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287
30
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288 /* Print text to current gc using word wrap */
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289 printText();
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290 printer.endJob();
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291
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292 /* Cleanup graphics resources used in printing */
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293 printerFont.dispose();
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294 printerForegroundColor.dispose();
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295 printerBackgroundColor.dispose();
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296 gc.dispose();
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297 }
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298 }
30
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diff changeset
299
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300 private void
30
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301 printText(){
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302 printer.startPage();
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diff changeset
303 wordBuffer = new StringBuffer();
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304 x = leftMargin;
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305 y = topMargin;
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diff changeset
306 index = 0;
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diff changeset
307 end = textToPrint.length;
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diff changeset
308 while(index < end){
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diff changeset
309 char c = textToPrint.charAt(index);
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310 index++;
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311 if(c != 0){
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312 if(c == 0x0a || c == 0x0d){
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313 if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){
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314 index++; // if this is cr-lf, skip the lf
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315 }
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316 printWordBuffer();
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317 newline();
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318 }
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319 else{
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320 if(c != '\t'){
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321 wordBuffer.append(c);
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322 }
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323 if(isPrintable(c)){
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324 printWordBuffer();
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325 if (c == '\t'){
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326 x += tabWidth;
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327 }
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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 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