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annotate org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet133.d @ 109:8ae65ae167f5

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Updated swt win32 for DMD 1.063 and latest Tango trunk.
author Jacob Carlborg <doob@me.com>
date Wed, 15 Sep 2010 16:42:28 +0200
parents 93b0e7382fd5
children 9f4c18c268b2
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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
28
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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 import tango.io.device.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, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
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91
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92 Menu menuBar = new Menu(shell, SWT.BAR);
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93 shell.setMenuBar(menuBar);
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94 MenuItem item = new MenuItem(menuBar, SWT.CASCADE);
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95 item.setText("&File");
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96 Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
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97 item.setMenu(fileMenu);
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98 item = new MenuItem(fileMenu, SWT.PUSH);
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99 item.setText("&Open...");
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100 item.setAccelerator(SWT.CTRL + 'O');
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101 item.addSelectionListener(new class() SelectionAdapter{
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102 public void widgetSelected(SelectionEvent event) {
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103 menuOpen();
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104 }
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105 });
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106 item = new MenuItem(fileMenu, SWT.PUSH);
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107 item.setText("Font...");
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108 item.addSelectionListener(new class() SelectionAdapter{
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109 public void widgetSelected(SelectionEvent event){
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110 menuFont();
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111 }
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112 });
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113 item = new MenuItem(fileMenu, SWT.PUSH);
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114 item.setText("Foreground Color...");
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115 item.addSelectionListener(new class() SelectionAdapter{
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116 public void widgetSelected(SelectionEvent event){
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117 menuForegroundColor();
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118 }
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119 });
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120 item = new MenuItem(fileMenu, SWT.PUSH);
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121 item.setText("Background Color...");
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122 item.addSelectionListener(new class() SelectionAdapter{
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123 public void widgetSelected(SelectionEvent event) {
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124 menuBackgroundColor();
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125 }
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126 });
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127 item = new MenuItem(fileMenu, SWT.PUSH);
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128 item.setText("&Print...");
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129 item.setAccelerator(SWT.CTRL + 'P');
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130 item.addSelectionListener(new class() SelectionAdapter{
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131 public void widgetSelected(SelectionEvent event) {
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132 menuPrint();
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133 }
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134 });
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135 new MenuItem(fileMenu, SWT.SEPARATOR);
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136 item = new MenuItem(fileMenu, SWT.PUSH);
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137 item.setText("E&xit");
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138 item.addSelectionListener(new class() SelectionAdapter{
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139 public void widgetSelected(SelectionEvent event){
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140 System.exit(0);
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141 }
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142 });
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143
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144 shell.open();
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145 while (!shell.isDisposed()) {
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146 if (!display.readAndDispatch()) display.sleep();
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147 }
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148 if (font !is null) font.dispose();
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149 if (foregroundColor !is null) foregroundColor.dispose();
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150 if (backgroundColor !is null) backgroundColor.dispose();
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151 display.dispose();
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152 }
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153
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154 private void menuOpen(){
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155 String textString;
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156 FileDialog dialog = new FileDialog(shell, SWT.OPEN);
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157 dialog.setFilterExtensions(["*.java", "*.*"]);
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158 String name = dialog.open();
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159 if(name is null) return;
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160
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161 try{
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162 try{
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163 textString = cast(char[])File.get(name);
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164 }
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165 catch (IOException e){
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166 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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167 box.setMessage("Error reading file:\n" ~ name);
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168 box.open();
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169 return;
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170 }
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171 }
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172 catch(Exception e){
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173 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR);
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174 box.setMessage("File not found:\n" ~ name);
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175 box.open();
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176 return;
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177 }
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178 text.setText(textString);
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179 }
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180
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181 private void
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182 menuFont(){
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183 FontDialog fontDialog = new FontDialog(shell);
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184 fontDialog.setFontList(text.getFont().getFontData());
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185 FontData fontData = fontDialog.open();
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186 if(fontData !is null){
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187 if(font !is null) font.dispose();
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188 font = new Font(display, fontData);
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189 text.setFont(font);
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190 }
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191 }
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192
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193 private void
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194 menuForegroundColor(){
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195 ColorDialog colorDialog = new ColorDialog(shell);
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196 colorDialog.setRGB(text.getForeground().getRGB());
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197 RGB rgb = colorDialog.open();
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198 if(rgb !is null){
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199 if(foregroundColor !is null) foregroundColor.dispose();
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200 foregroundColor = new Color(display, rgb);
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201 text.setForeground(foregroundColor);
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202 }
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203 }
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204
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205 private void
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206 menuBackgroundColor(){
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207 ColorDialog colorDialog = new ColorDialog(shell);
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208 colorDialog.setRGB(text.getBackground().getRGB());
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209 RGB rgb = colorDialog.open();
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210 if(rgb !is null){
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211 if(backgroundColor !is null) backgroundColor.dispose();
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212 backgroundColor = new Color(display, rgb);
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213 text.setBackground(backgroundColor);
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214 }
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215 }
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216
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217 private void
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218 menuPrint(){
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219 PrintDialog dialog = new PrintDialog(shell, SWT.NONE);
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220 PrinterData data = dialog.open();
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221 if(data is null) return;
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222 if(data.printToFile){
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223 data.fileName = "print.out"; // you probably want to ask the user for a filename
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224 }
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225
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226 /* Get the text to print from the Text widget (you could get it from anywhere, i.e. your java model) */
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227 textToPrint = text.getText();
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228
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229 /* Get the font & foreground & background data. */
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230 printerFontData = text.getFont().getFontData();
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231 printerForeground = text.getForeground().getRGB();
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232 printerBackground = text.getBackground().getRGB();
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233
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234 /* Do the printing in a background thread so that spooling does not freeze the UI. */
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235 printer = new Printer(data);
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236 Thread printingThread = new class ("Printing") Thread{
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237 private void
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238 run(){
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239 print(printer);
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240 printer.dispose();
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241 }
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242 public
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243 this(char[] o_name){
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244 //this.name = o_name;
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245 super(&run);
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246 }
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247 };
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248 printingThread.start();
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249 }
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250
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251 private void
30
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252 print(Printer printer){
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253 if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list
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254 Rectangle clientArea = printer.getClientArea();
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255 Rectangle trim = printer.computeTrim(0, 0, 0, 0);
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256 Point dpi = printer.getDPI();
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257 leftMargin = dpi.x + trim.x; // one inch from left side of paper
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258 rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper
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259 topMargin = dpi.y + trim.y; // one inch from top edge of paper
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260 bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper
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261
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262 /* Create a buffer for computing tab width. */
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263 int tabSize = 4; // is tab width a user setting in your UI?
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264 StringBuffer tabBuffer = new StringBuffer(tabSize);
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265 for (int i = 0; i < tabSize; i++) tabBuffer.append(' ');
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266 tabs = tabBuffer.toString();
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267
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268 /* Create printer GC, and create and set the printer font & foreground color. */
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269 gc = new GC(printer);
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270 Font printerFont = new Font(printer, printerFontData);
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271 Color printerForegroundColor = new Color(printer, printerForeground);
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272 Color printerBackgroundColor = new Color(printer, printerBackground);
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273
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274 gc.setFont(printerFont);
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275 gc.setForeground(printerForegroundColor);
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276 gc.setBackground(printerBackgroundColor);
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277 tabWidth = gc.stringExtent(tabs).x;
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278 lineHeight = gc.getFontMetrics().getHeight();
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279
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280 /* Print text to current gc using word wrap */
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281 printText();
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282 printer.endJob();
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283
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284 /* Cleanup graphics resources used in printing */
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285 printerFont.dispose();
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286 printerForegroundColor.dispose();
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287 printerBackgroundColor.dispose();
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288 gc.dispose();
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289 }
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290 }
30
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291
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292 private void
30
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293 printText(){
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294 printer.startPage();
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295 wordBuffer = new StringBuffer();
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296 x = leftMargin;
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297 y = topMargin;
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298 index = 0;
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299 end = textToPrint.length;
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300 while(index < end){
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301 char c = textToPrint.charAt(index);
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302 index++;
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303 if(c != 0){
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diff changeset
304 if(c == 0x0a || c == 0x0d){
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305 if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){
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306 index++; // if this is cr-lf, skip the lf
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diff changeset
307 }
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308 printWordBuffer();
30
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diff changeset
309 newline();
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diff changeset
310 }
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diff changeset
311 else{
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diff changeset
312 if(c != '\t'){
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diff changeset
313 wordBuffer.append(c);
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314 }
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315 if(isPrintable(c)){
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316 printWordBuffer();
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317 if (c == '\t'){
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318 x += tabWidth;
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319 }
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320 }
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321 }
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322 }
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323 }
30
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324 if (y + lineHeight <= bottomMargin) {
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325 printer.endPage();
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326 }
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327 }
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328
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329 private void
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330 printWordBuffer(){
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331 if(wordBuffer.length > 0){
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332 String word = wordBuffer.toString();
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333 int wordWidth = gc.stringExtent(word).x;
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334 if(x + wordWidth > rightMargin){
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335 /* word doesn't fit on current line, so wrap */
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336 newline();
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337 }
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338 gc.drawString(word, x, y, false);
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339 x += wordWidth;
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340 wordBuffer = new StringBuffer();
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341 }
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342 }
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343
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344 private void
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345 newline(){
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346 x = leftMargin;
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347 y += lineHeight;
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348 if(y + lineHeight > bottomMargin){
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349 printer.endPage();
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350 if(index + 1 < end){
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351 y = topMargin;
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352 printer.startPage();
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353 }
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354 }
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355 }
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356 }
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357