Mercurial > projects > dwt2
annotate org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet133.d @ 29:4e5843b771cc
First snippets buildable on windows
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 22 Mar 2009 19:55:00 +0100 |
| parents | 69b1fa94a4a8 |
| children | 93b0e7382fd5 |
| rev | line source |
|---|---|
| 28 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2004 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * D Port: | |
| 11 * Adam Chrapkowski <adam DOT chrapkowski AT gmail DOT com> | |
| 12 *******************************************************************************/ | |
| 13 module org.eclipse.swt.snippets.Snippet133; | |
| 14 | |
| 15 /* | |
| 16 * Printing example snippet: print text to printer, with word wrap and pagination | |
| 17 * | |
| 18 * For a list of all SWT example snippets see | |
| 19 * http://www.eclipse.org/swt/snippets/ | |
| 20 */ | |
| 21 | |
| 22 // org.eclipse.swt | |
| 23 import org.eclipse.swt.SWT; | |
| 24 // org.eclipse.swt.graphics | |
| 25 import org.eclipse.swt.graphics.Color, | |
| 26 org.eclipse.swt.graphics.Font, | |
| 27 org.eclipse.swt.graphics.FontData, | |
| 28 org.eclipse.swt.graphics.GC, | |
| 29 org.eclipse.swt.graphics.Rectangle, | |
| 30 org.eclipse.swt.graphics.RGB; | |
| 31 // org.eclipse.swt.widgets | |
| 32 import org.eclipse.swt.widgets.Display, | |
| 33 org.eclipse.swt.widgets.ColorDialog, | |
| 34 org.eclipse.swt.widgets.FileDialog, | |
| 35 org.eclipse.swt.widgets.FontDialog, | |
| 36 org.eclipse.swt.widgets.Menu, | |
| 37 org.eclipse.swt.widgets.MenuItem, | |
| 38 org.eclipse.swt.widgets.MessageBox, | |
| 39 org.eclipse.swt.widgets.Shell, | |
| 40 org.eclipse.swt.widgets.Text; | |
| 41 // org.eclipse.swt.events | |
| 42 import org.eclipse.swt.events.SelectionAdapter, | |
| 43 org.eclipse.swt.events.SelectionEvent; | |
| 44 // org.eclipse.swt.layout | |
| 45 import org.eclipse.swt.layout.FillLayout; | |
| 46 // org.eclipse.swt.printing | |
| 47 import org.eclipse.swt.printing.PrintDialog, | |
| 48 org.eclipse.swt.printing.Printer, | |
| 49 org.eclipse.swt.printing.PrinterData; | |
| 50 // java | |
| 51 import java.lang.all; | |
| 52 | |
| 53 // tango | |
| 54 import tango.core.Thread; | |
| 55 import tango.io.File; | |
| 56 import tango.text.Unicode; | |
| 57 | |
| 58 public void | |
| 59 main(String[] args){ | |
| 60 (new Snippet133).open(); | |
| 61 } | |
| 62 | |
| 63 class Snippet133{ | |
| 64 Display display; | |
| 65 Shell shell; | |
| 66 Text text; | |
| 67 Font font; | |
| 68 Color foregroundColor, backgroundColor; | |
| 69 | |
| 70 Printer printer; | |
| 71 GC gc; | |
| 72 FontData[] printerFontData; | |
| 73 RGB printerForeground, printerBackground; | |
| 74 | |
| 75 int lineHeight = 0; | |
| 76 int tabWidth = 0; | |
| 77 int leftMargin, rightMargin, topMargin, bottomMargin; | |
| 78 int x, y; | |
| 79 int index, end; | |
| 80 String textToPrint; | |
| 81 String tabs; | |
| 82 StringBuffer wordBuffer; | |
| 83 | |
| 84 public void | |
| 85 open(){ | |
| 86 display = new Display(); | |
| 87 shell = new Shell(display); | |
| 88 shell.setLayout(new FillLayout()); | |
| 89 shell.setText("Print Text"); | |
|
29
4e5843b771cc
First snippets buildable on windows
Frank Benoit <benoit@tionex.de>
parents:
28
diff
changeset
|
90 text = new Text(shell, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); |
| 28 | 91 |
| 92 Menu menuBar = new Menu(shell, SWT.BAR); | |
| 93 shell.setMenuBar(menuBar); | |
| 94 MenuItem item = new MenuItem(menuBar, SWT.CASCADE); | |
| 95 item.setText("&File"); | |
| 96 Menu fileMenu = new Menu(shell, SWT.DROP_DOWN); | |
| 97 item.setMenu(fileMenu); | |
| 98 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 99 item.setText("&Open..."); | |
| 100 item.setAccelerator(SWT.CTRL + 'O'); | |
| 101 item.addSelectionListener(new class() SelectionAdapter{ | |
| 102 public void | |
| 103 widgetSelected(SelectionEvent event) { | |
| 104 menuOpen(); | |
| 105 } | |
| 106 }); | |
| 107 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 108 item.setText("Font..."); | |
| 109 item.addSelectionListener(new class() SelectionAdapter{ | |
| 110 public void | |
| 111 widgetSelected(SelectionEvent event){ | |
| 112 menuFont(); | |
| 113 } | |
| 114 }); | |
| 115 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 116 item.setText("Foreground Color..."); | |
| 117 item.addSelectionListener(new class() SelectionAdapter{ | |
| 118 public void | |
| 119 widgetSelected(SelectionEvent event){ | |
| 120 menuForegroundColor(); | |
| 121 } | |
| 122 }); | |
| 123 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 124 item.setText("Background Color..."); | |
| 125 item.addSelectionListener(new class() SelectionAdapter{ | |
| 126 public void | |
| 127 widgetSelected(SelectionEvent event) { | |
| 128 menuBackgroundColor(); | |
| 129 } | |
| 130 }); | |
| 131 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 132 item.setText("&Print..."); | |
| 133 item.setAccelerator(SWT.CTRL + 'P'); | |
| 134 item.addSelectionListener(new class() SelectionAdapter{ | |
| 135 public void | |
| 136 widgetSelected(SelectionEvent event) { | |
| 137 menuPrint(); | |
| 138 } | |
| 139 }); | |
| 140 new MenuItem(fileMenu, SWT.SEPARATOR); | |
| 141 item = new MenuItem(fileMenu, SWT.PUSH); | |
| 142 item.setText("E&xit"); | |
| 143 item.addSelectionListener(new class() SelectionAdapter{ | |
| 144 public void | |
| 145 widgetSelected(SelectionEvent event){ | |
| 146 System.exit(0); | |
| 147 } | |
| 148 }); | |
| 149 | |
| 150 shell.open(); | |
| 151 while (!shell.isDisposed()) { | |
| 152 if (!display.readAndDispatch()) display.sleep(); | |
| 153 } | |
| 154 if (font !is null) font.dispose(); | |
| 155 if (foregroundColor !is null) foregroundColor.dispose(); | |
| 156 if (backgroundColor !is null) backgroundColor.dispose(); | |
| 157 display.dispose(); | |
| 158 } | |
| 159 | |
| 160 private void | |
| 161 menuOpen(){ | |
| 162 String textString; | |
| 163 FileDialog dialog = new FileDialog(shell, SWT.OPEN); | |
| 164 dialog.setFilterExtensions(["*.java", "*.*"]); | |
| 165 String name = dialog.open(); | |
| 166 if(name is null) return; | |
| 167 | |
| 168 try{ | |
| 169 scope File file = new File(name); | |
| 170 try{ | |
| 171 textString = cast(char[])file.read; | |
| 172 } | |
| 173 catch (IOException e){ | |
| 174 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR); | |
| 175 box.setMessage("Error reading file:\n" ~ name); | |
| 176 box.open(); | |
| 177 return; | |
| 178 } | |
| 179 } | |
| 180 catch(Exception e){ | |
| 181 MessageBox box = new MessageBox(shell, SWT.ICON_ERROR); | |
| 182 box.setMessage("File not found:\n" ~ name); | |
| 183 box.open(); | |
| 184 return; | |
| 185 } | |
| 186 text.setText(textString); | |
| 187 } | |
| 188 | |
| 189 private void | |
| 190 menuFont(){ | |
| 191 FontDialog fontDialog = new FontDialog(shell); | |
| 192 fontDialog.setFontList(text.getFont().getFontData()); | |
| 193 FontData fontData = fontDialog.open(); | |
| 194 if(fontData !is null){ | |
| 195 if(font !is null) font.dispose(); | |
| 196 font = new Font(display, fontData); | |
| 197 text.setFont(font); | |
| 198 } | |
| 199 } | |
| 200 | |
| 201 private void | |
| 202 menuForegroundColor(){ | |
| 203 ColorDialog colorDialog = new ColorDialog(shell); | |
| 204 colorDialog.setRGB(text.getForeground().getRGB()); | |
| 205 RGB rgb = colorDialog.open(); | |
| 206 if(rgb !is null){ | |
| 207 if(foregroundColor !is null) foregroundColor.dispose(); | |
| 208 foregroundColor = new Color(display, rgb); | |
| 209 text.setForeground(foregroundColor); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 private void | |
| 214 menuBackgroundColor(){ | |
| 215 ColorDialog colorDialog = new ColorDialog(shell); | |
| 216 colorDialog.setRGB(text.getBackground().getRGB()); | |
| 217 RGB rgb = colorDialog.open(); | |
| 218 if(rgb !is null){ | |
| 219 if(backgroundColor !is null) backgroundColor.dispose(); | |
| 220 backgroundColor = new Color(display, rgb); | |
| 221 text.setBackground(backgroundColor); | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 private void | |
| 226 menuPrint(){ | |
| 227 PrintDialog dialog = new PrintDialog(shell, SWT.NONE); | |
| 228 PrinterData data = dialog.open(); | |
| 229 if(data is null) return; | |
| 230 if(data.printToFile){ | |
| 231 data.fileName = "print.out"; // you probably want to ask the user for a filename | |
| 232 } | |
| 233 | |
| 234 /* Get the text to print from the Text widget (you could get it from anywhere, i.e. your java model) */ | |
| 235 textToPrint = text.getText(); | |
| 236 | |
| 237 /* Get the font & foreground & background data. */ | |
| 238 printerFontData = text.getFont().getFontData(); | |
| 239 printerForeground = text.getForeground().getRGB(); | |
| 240 printerBackground = text.getBackground().getRGB(); | |
| 241 | |
| 242 /* Do the printing in a background thread so that spooling does not freeze the UI. */ | |
| 243 printer = new Printer(data); | |
| 244 Thread printingThread = new class ("Printing") Thread{ | |
| 245 private void | |
| 246 run(){ | |
| 247 print(printer); | |
| 248 printer.dispose(); | |
| 249 } | |
| 250 public | |
| 251 this(char[] o_name){ | |
| 252 this.name = o_name; | |
| 253 super(&run); | |
| 254 } | |
| 255 }; | |
| 256 printingThread.start(); | |
| 257 } | |
| 258 | |
| 259 private void | |
| 260 print(Printer printer){ | |
| 261 if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list | |
| 262 Rectangle clientArea = printer.getClientArea(); | |
| 263 Rectangle trim = printer.computeTrim(0, 0, 0, 0); | |
| 264 Point dpi = printer.getDPI(); | |
| 265 leftMargin = dpi.x + trim.x; // one inch from left side of paper | |
| 266 rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper | |
| 267 topMargin = dpi.y + trim.y; // one inch from top edge of paper | |
| 268 bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper | |
| 269 | |
| 270 /* Create a buffer for computing tab width. */ | |
| 271 int tabSize = 4; // is tab width a user setting in your UI? | |
| 272 StringBuffer tabBuffer = new StringBuffer(tabSize); | |
| 273 for (int i = 0; i < tabSize; i++) tabBuffer.append(' '); | |
| 274 tabs = tabBuffer.toString(); | |
| 275 | |
| 276 /* Create printer GC, and create and set the printer font & foreground color. */ | |
| 277 gc = new GC(printer); | |
| 278 Font printerFont = new Font(printer, printerFontData); | |
| 279 Color printerForegroundColor = new Color(printer, printerForeground); | |
| 280 Color printerBackgroundColor = new Color(printer, printerBackground); | |
| 281 | |
| 282 gc.setFont(printerFont); | |
| 283 gc.setForeground(printerForegroundColor); | |
| 284 gc.setBackground(printerBackgroundColor); | |
| 285 tabWidth = gc.stringExtent(tabs).x; | |
| 286 lineHeight = gc.getFontMetrics().getHeight(); | |
| 287 | |
| 288 /* Print text to current gc using word wrap */ | |
| 289 printText(); | |
| 290 printer.endJob(); | |
| 291 | |
| 292 /* Cleanup graphics resources used in printing */ | |
| 293 printerFont.dispose(); | |
| 294 printerForegroundColor.dispose(); | |
| 295 printerBackgroundColor.dispose(); | |
| 296 gc.dispose(); | |
| 297 } | |
| 298 } | |
| 299 | |
| 300 private void | |
| 301 printText(){ | |
| 302 printer.startPage(); | |
| 303 wordBuffer = new StringBuffer(); | |
| 304 x = leftMargin; | |
| 305 y = topMargin; | |
| 306 index = 0; | |
| 307 end = textToPrint.length; | |
| 308 while(index < end){ | |
| 309 char c = textToPrint.charAt(index); | |
| 310 index++; | |
| 311 if(c != 0){ | |
| 312 if(c == 0x0a || c == 0x0d){ | |
| 313 if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){ | |
| 314 index++; // if this is cr-lf, skip the lf | |
| 315 } | |
| 316 printWordBuffer(); | |
| 317 newline(); | |
| 318 } | |
| 319 else{ | |
| 320 if(c != '\t'){ | |
| 321 wordBuffer.append(c); | |
| 322 } | |
| 323 if(isPrintable(c)){ | |
| 324 printWordBuffer(); | |
| 325 if (c == '\t'){ | |
| 326 x += tabWidth; | |
| 327 } | |
| 328 } | |
| 329 } | |
| 330 } | |
| 331 } | |
| 332 if (y + lineHeight <= bottomMargin) { | |
| 333 printer.endPage(); | |
| 334 } | |
| 335 } | |
| 336 | |
| 337 private void | |
| 338 printWordBuffer(){ | |
| 339 if(wordBuffer.length > 0){ | |
| 340 String word = wordBuffer.toString(); | |
| 341 int wordWidth = gc.stringExtent(word).x; | |
| 342 if(x + wordWidth > rightMargin){ | |
| 343 /* word doesn't fit on current line, so wrap */ | |
| 344 newline(); | |
| 345 } | |
| 346 gc.drawString(word, x, y, false); | |
| 347 x += wordWidth; | |
| 348 wordBuffer = new StringBuffer(); | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 private void | |
| 353 newline(){ | |
| 354 x = leftMargin; | |
| 355 y += lineHeight; | |
| 356 if(y + lineHeight > bottomMargin){ | |
| 357 printer.endPage(); | |
| 358 if(index + 1 < end){ | |
| 359 y = topMargin; | |
| 360 printer.startPage(); | |
| 361 } | |
| 362 } | |
| 363 } | |
| 364 } | |
| 365 |