Mercurial > projects > dwt-samples
view snippets/printing/Snippet133.d @ 165:513c72ba21f1
added
snippets\priniting\Snippet132.d
snippets\priniting\Snippet133.d
changed
snippets\dsss.conf
author | Adam Chrapkowski <adam.chrapkowski@gmail.com> |
---|---|
date | Wed, 03 Sep 2008 19:27:24 +0200 |
parents | |
children | 9824a8aba726 |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * D Port: * Adam Chrapkowski <adam DOT chrapkowski AT gmail DOT com> *******************************************************************************/ module printing.Snippet133; /* * Printing example snippet: print text to printer, with word wrap and pagination * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ */ // dwt import dwt.DWT; // dwt.graphics import dwt.graphics.Color, dwt.graphics.Font, dwt.graphics.FontData, dwt.graphics.GC, dwt.graphics.Rectangle, dwt.graphics.RGB; // dwt.widgets import dwt.widgets.Display, dwt.widgets.ColorDialog, dwt.widgets.FileDialog, dwt.widgets.FontDialog, dwt.widgets.Menu, dwt.widgets.MenuItem, dwt.widgets.MessageBox, dwt.widgets.Shell, dwt.widgets.Text; // dwt.events import dwt.events.SelectionAdapter, dwt.events.SelectionEvent; // dwt.layout import dwt.layout.FillLayout; // dwt.printing import dwt.printing.PrintDialog, dwt.printing.Printer, dwt.printing.PrinterData; // dwt.dwthelper import dwt.dwthelper.utils; // tango import tango.core.Thread; import tango.io.File; import tango.text.Unicode; public void main(String[] args){ (new Snippet133).open(); } class Snippet133{ Display display; Shell shell; Text text; Font font; Color foregroundColor, backgroundColor; Printer printer; GC gc; FontData[] printerFontData; RGB printerForeground, printerBackground; int lineHeight = 0; int tabWidth = 0; int leftMargin, rightMargin, topMargin, bottomMargin; int x, y; int index, end; String textToPrint; String tabs; StringBuffer wordBuffer; public void open(){ display = new Display(); shell = new Shell(display); shell.setLayout(new FillLayout()); shell.setText("Print Text"); text = new Text(shell, DWT.BORDER | DWT.MULTI | DWT.V_SCROLL | DWT.H_SCROLL); Menu menuBar = new Menu(shell, DWT.BAR); shell.setMenuBar(menuBar); MenuItem item = new MenuItem(menuBar, DWT.CASCADE); item.setText("&File"); Menu fileMenu = new Menu(shell, DWT.DROP_DOWN); item.setMenu(fileMenu); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("&Open..."); item.setAccelerator(DWT.CTRL + 'O'); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event) { menuOpen(); } }); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("Font..."); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event){ menuFont(); } }); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("Foreground Color..."); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event){ menuForegroundColor(); } }); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("Background Color..."); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event) { menuBackgroundColor(); } }); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("&Print..."); item.setAccelerator(DWT.CTRL + 'P'); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event) { menuPrint(); } }); new MenuItem(fileMenu, DWT.SEPARATOR); item = new MenuItem(fileMenu, DWT.PUSH); item.setText("E&xit"); item.addSelectionListener(new class() SelectionAdapter{ public void widgetSelected(SelectionEvent event){ System.exit(0); } }); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } if (font !is null) font.dispose(); if (foregroundColor !is null) foregroundColor.dispose(); if (backgroundColor !is null) backgroundColor.dispose(); display.dispose(); } private void menuOpen(){ String textString; FileDialog dialog = new FileDialog(shell, DWT.OPEN); dialog.setFilterExtensions(["*.java", "*.*"]); String name = dialog.open(); if(name is null) return; try{ scope File file = new File(name); try{ textString = cast(char[])file.read; } catch (IOException e){ MessageBox box = new MessageBox(shell, DWT.ICON_ERROR); box.setMessage("Error reading file:\n" ~ name); box.open(); return; } } catch(Exception e){ MessageBox box = new MessageBox(shell, DWT.ICON_ERROR); box.setMessage("File not found:\n" ~ name); box.open(); return; } text.setText(textString); } private void menuFont(){ FontDialog fontDialog = new FontDialog(shell); fontDialog.setFontList(text.getFont().getFontData()); FontData fontData = fontDialog.open(); if(fontData !is null){ if(font !is null) font.dispose(); font = new Font(display, fontData); text.setFont(font); } } private void menuForegroundColor(){ ColorDialog colorDialog = new ColorDialog(shell); colorDialog.setRGB(text.getForeground().getRGB()); RGB rgb = colorDialog.open(); if(rgb !is null){ if(foregroundColor !is null) foregroundColor.dispose(); foregroundColor = new Color(display, rgb); text.setForeground(foregroundColor); } } private void menuBackgroundColor(){ ColorDialog colorDialog = new ColorDialog(shell); colorDialog.setRGB(text.getBackground().getRGB()); RGB rgb = colorDialog.open(); if(rgb !is null){ if(backgroundColor !is null) backgroundColor.dispose(); backgroundColor = new Color(display, rgb); text.setBackground(backgroundColor); } } private void menuPrint(){ PrintDialog dialog = new PrintDialog(shell, DWT.NONE); PrinterData data = dialog.open(); if(data is null) return; if(data.printToFile){ data.fileName = "print.out"; // you probably want to ask the user for a filename } /* Get the text to print from the Text widget (you could get it from anywhere, i.e. your java model) */ textToPrint = text.getText(); /* Get the font & foreground & background data. */ printerFontData = text.getFont().getFontData(); printerForeground = text.getForeground().getRGB(); printerBackground = text.getBackground().getRGB(); /* Do the printing in a background thread so that spooling does not freeze the UI. */ printer = new Printer(data); Thread printingThread = new class ("Printing") Thread{ private void run(){ print(printer); printer.dispose(); } public this(char[] o_name){ this.name = o_name; super(&run); } }; printingThread.start(); } private void print(Printer printer){ if(printer.startJob("Text")){ // the string is the job name - shows up in the printer's job list Rectangle clientArea = printer.getClientArea(); Rectangle trim = printer.computeTrim(0, 0, 0, 0); Point dpi = printer.getDPI(); leftMargin = dpi.x + trim.x; // one inch from left side of paper rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one inch from right side of paper topMargin = dpi.y + trim.y; // one inch from top edge of paper bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one inch from bottom edge of paper /* Create a buffer for computing tab width. */ int tabSize = 4; // is tab width a user setting in your UI? StringBuffer tabBuffer = new StringBuffer(tabSize); for (int i = 0; i < tabSize; i++) tabBuffer.append(' '); tabs = tabBuffer.toString(); /* Create printer GC, and create and set the printer font & foreground color. */ gc = new GC(printer); Font printerFont = new Font(printer, printerFontData); Color printerForegroundColor = new Color(printer, printerForeground); Color printerBackgroundColor = new Color(printer, printerBackground); gc.setFont(printerFont); gc.setForeground(printerForegroundColor); gc.setBackground(printerBackgroundColor); tabWidth = gc.stringExtent(tabs).x; lineHeight = gc.getFontMetrics().getHeight(); /* Print text to current gc using word wrap */ printText(); printer.endJob(); /* Cleanup graphics resources used in printing */ printerFont.dispose(); printerForegroundColor.dispose(); printerBackgroundColor.dispose(); gc.dispose(); } } private void printText(){ printer.startPage(); wordBuffer = new StringBuffer(); x = leftMargin; y = topMargin; index = 0; end = textToPrint.length; while(index < end){ char c = textToPrint.charAt(index); index++; if(c != 0){ if(c == 0x0a || c == 0x0d){ if(c == 0x0d && index < end && textToPrint.charAt(index) == 0x0a){ index++; // if this is cr-lf, skip the lf } printWordBuffer(); newline(); } else{ if(c != '\t'){ wordBuffer.append(c); } if(isPrintable(c)){ printWordBuffer(); if (c == '\t'){ x += tabWidth; } } } } } if (y + lineHeight <= bottomMargin) { printer.endPage(); } } private void printWordBuffer(){ if(wordBuffer.length > 0){ String word = wordBuffer.toString(); int wordWidth = gc.stringExtent(word).x; if(x + wordWidth > rightMargin){ /* word doesn't fit on current line, so wrap */ newline(); } gc.drawString(word, x, y, false); x += wordWidth; wordBuffer = new StringBuffer(); } } private void newline(){ x = leftMargin; y += lineHeight; if(y + lineHeight > bottomMargin){ printer.endPage(); if(index + 1 < end){ y = topMargin; printer.startPage(); } } } }