Oi gente boa,
Eu gostaria de saber se alguém já fez ou viu um JSlider utilizando doubles
qq ajuda será muito bem vinda,
obrigado
Jefferson
>From: "Carlos Mauricio de Rodrigues e Machado-MasterJedi"
><[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: <[EMAIL PROTECTED]>
>Subject: Re: [java-list] Bug?
>Date: Thu, 18 Apr 2002 10:08:38 -0300
>
>Olá Eduardo tudo bom???
>Eu testei seu exemplo com a combinacao winxp prof com jdk 1.4 e funcionou
>sem problemas nenhum...
>Abraços
>Carlos Maurício
>############################################################################################
>C.M Consultoria - Carlos Maurício de Rodrigues e Machado & Associados
>Serviços na área de Sistemas, Equipamentos, Redes e Projetos
>Fones: (19) 3875-3036 e (019) 9744-8576
>[EMAIL PROTECTED]
>[EMAIL PROTECTED]
>
> ----- Original Message -----
> From: Eduardo de Britto Castro
> To: [EMAIL PROTECTED]
> Sent: Tuesday, April 16, 2002 1:59 AM
> Subject: [java-list] Bug?
>
>
> Tenho um exemplo de impressão que funcionava na versão 1.3. Agora é
>gerada uma excessão em tempo de execução e é gerado também um arquivo de
>log contendo o seguinte (mais abaixo está o código):
>
>
> An unexpected exception has been detected in native code outside the VM.
> Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D081C73
> Function=[Unknown.]
> Library=(N/A)
>
> NOTE: We are unable to locate the function name symbol for the error
> just occurred. Please refer to release documentation for possible
> reason and solutions.
>
>
> Current Java thread:
> at sun.awt.windows.WPrinterJob.setNativePrintService(Native Method)
> at sun.awt.windows.WPrinterJob.setPrintService(WPrinterJob.java:384)
> at
>sun.print.RasterPrinterJob.getPrintService(RasterPrinterJob.java:353)
> at sun.awt.windows.WPrinterJob.getPrintService(WPrinterJob.java:408)
> at sun.print.PrintJob2D.findNamedPrintService(PrintJob2D.java:187)
> at sun.print.PrintJob2D.copyAttributes(PrintJob2D.java:223)
> at sun.print.PrintJob2D.printDialog(PrintJob2D.java:176)
> at sun.awt.windows.WToolkit.getPrintJob(WToolkit.java:600)
> at sun.awt.windows.WToolkit.getPrintJob(WToolkit.java:586)
> at Main.actionPerformed(Main.java:70)
> at java.awt.Button.processActionEvent(Button.java:381)
> at java.awt.Button.processEvent(Button.java:350)
> at java.awt.Component.dispatchEventImpl(Component.java:3526)
> at java.awt.Component.dispatchEvent(Component.java:3367)
> at java.awt.EventQueue.dispatchEvent(EventQueue.java:445)
> at
>java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:190)
> at
>java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:144)
> at
>java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
> at
>java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:130)
> at java.awt.EventDispatchThread.run(EventDispatchThread.java:98)
>
> Dynamic libraries:
> 0x7D230000 - 0x7D25D000 C:\WINDOWS\SYSTEM\DBGHELP.DLL
>
> Local Time = Tue Apr 16 01:57:24 2002
> Elapsed Time = 9
> #
> # The exception above was detected in native code outside the VM
> #
> # Java VM: Java HotSpot(TM) Client VM (1.4.0-b92 mixed mode)
> #
>
> O código é o seguinte:
>
> import java.awt.*;
> import java.awt.event.*;
> import java.io.*;
> import java.util.*;
> import java.text.*;
>
> class Main extends Frame implements ActionListener {
> int curPointSize = 12;
> String filename;
> Vector lines = new Vector();
>
> Button printBtn = new Button("Print...");
> TextField pointSize = new TextField("" + curPointSize);
> TextField pageNum = new TextField("1");
> Preview preview;
>
> Main(String filename) {
> super("PrintJob Example");
> // Remember the filename.
> this.filename = filename;
>
> // Read the file into lines.
> try {
> String line;
> BufferedReader fis = new BufferedReader(
> new InputStreamReader(new FileInputStream(filename)));
> while ((line = fis.readLine()) != null) {
> lines.addElement(line);
> }
> fis.close();
> } catch (Exception e) {
> e.printStackTrace();
> }
>
> // Listen for events.
> pageNum.addActionListener(this);
> pointSize.addActionListener(this);
> printBtn.addActionListener(this);
>
> // Layout and show components.
>
> Panel p = new Panel(new FlowLayout());
> p.add(new Label("Page:", Label.RIGHT));
> p.add(pageNum);
> p.add(new Label("Point Size:", Label.RIGHT));
> p.add(pointSize);
> p.add(printBtn);
> add(p, BorderLayout.NORTH);
>
> // Create and prepare the preview component.
> preview = new Preview(filename, lines);
> add(preview, BorderLayout.CENTER);
> preview.setFont(new Font("Monospaced", Font.PLAIN,
>curPointSize));
>
> pack();
> show();
> }
>
> public void actionPerformed(ActionEvent evt) {
> if (evt.getSource() == pageNum) {
> // Set the page.
> preview.setPage(Integer.parseInt(pageNum.getText())-1);
> } else if (evt.getSource() == pointSize) {
> // Set the point size.
> curPointSize = Integer.parseInt(pointSize.getText());
> preview.setFont(new Font("Monospaced", Font.PLAIN,
>curPointSize));
> } else if (evt.getSource() == printBtn) {
> // Print the file.
> Properties props = new Properties();
> PrintJob pj = getToolkit().getPrintJob(this, filename,
>props);
>
> if (pj != null) {
> // Print out any properties.
> for (Enumeration e = props.propertyNames() ;
> e.hasMoreElements() ;) {
> System.out.println(e.nextElement());
> }
>
> Graphics pjG = pj.getGraphics();
> int pages = preview.getPageCount(pjG);
>
> // Always print even number of pages.
> if (pages % 2 == 1) {
> pages++;
> }
> for (int i=0; i<pages; i += 2) {
> if (pjG == null) {
> pjG = pj.getGraphics();
> }
> if (pj.lastPageFirst()) {
> preview.print(pjG, pages-i-2);
> } else {
> preview.print(pjG, i);
> }
> pjG.dispose();
> pjG = null;
> }
> pj.end();
> }
> }
> }
>
> public static void main(String[] args) {
> if (args.length == 1) {
> new Main(args[0]);
> } else {
> System.err.println("Usage: java Main <text file>");
> }
> }
> }
>
> class Preview extends Component {
> int page;
> String filename;
> Font headerFont = new Font("Serif", Font.BOLD, 14);
> Font font;
> Vector lines;
>
> Preview(String filename, Vector lines) {
> this.filename = filename;
> this.lines = lines;
> }
>
> // Sets the font and repaints the display.
> public void setFont(Font f) {
> font = f;
> repaint();
> }
>
> // p is 0-based.
> void setPage(int p) {
> page = p;
> repaint();
> }
>
> // Returns the page count relative to the metrics in g.
> int getPageCount(Graphics g) {
> prepareLayoutValues(g);
> return (brokenLines.size()-1) / linesPerPage + 1;
> }
>
> // Prints the page p and p+1.
> // p is 0-based.
> public void print(Graphics g, int p) {
> page = p;
> paint(g);
> }
>
> public void paint(Graphics g) {
> prepareLayoutValues(g);
>
> g.setFont(headerFont);
> FontMetrics fm = g.getFontMetrics();
>
> // Draw the filename.
> g.drawString(filename, boxRect.x,
>fm.getHeight()/2+fm.getAscent());
>
> // Draw the date and page number.
> g.drawString(
> DateFormat.getDateTimeInstance().format(new Date()),
> boxRect.x + pageRect.width,
>fm.getHeight()/2+fm.getAscent());
>
> for (int p=0; p<2; p++) {
> if (page + p >= (brokenLines.size()-1) / linesPerPage + 1) {
> break;
> }
>
> // Draw page number.
> String s = "" + (page + p + 1);
> g.setFont(headerFont);
> fm = g.getFontMetrics();
> g.drawString(s,
> boxRect.x + p*pageRect.width + boxRect.width -
>fm.stringWidth(s),
> fm.getHeight()/2+fm.getAscent());
>
> g.drawRect(boxRect.x + p*pageRect.width,
> boxRect.y, boxRect.width-1, boxRect.height-1);
>
>
> // Find the starting line on the current page.
> int l = Math.min(brokenLines.size(), (page+p) *
>linesPerPage);
>
> g.setFont(font);
> fm = g.getFontMetrics();
> int x = listingRect.x + p*pageRect.width;
> int y = listingRect.y + fm.getAscent();
> for (int i=0; i<linesPerPage && l+i < brokenLines.size();
>i++) {
> s = (String)brokenLines.elementAt(l + i);
>
> if (s.length() > charsPerLine) {
> int charWidth = fm.charWidth('M');
> s = s.substring(0, charsPerLine);
>
> // Draw the continuation symbol.
> g.drawArc(
> listingRect.x+charsPerLine*charWidth +
>p*pageRect.width,
> y-fm.getAscent()+fm.getHeight()/2,
> charWidth, fm.getHeight()/2,
> 45, -180);
> }
> g.drawString(s, x, y);
> y += fm.getHeight();
> }
> }
> }
>
> // External margin in which the printer cannot print.
> int pageMargin;
>
> // Internal margin between boxes and text.
> int margin = 10;
> Insets margins = new Insets(10, 10, 10, 10);;
>
> // Bounds which includes the header, box, and listing.
> Rectangle pageRect;
>
> // The bounds of the box.
> Rectangle boxRect;
>
> // The bounds of the listing. This rectangle strictly contains
> // the text and not the continuation character.
> Rectangle listingRect;
>
> // Number of characters per line.
> int charsPerLine;
>
> // Number of lines per page.
> int linesPerPage;
>
> // The lines after they have been broken so they fit within
>charsPerLine.
> Vector brokenLines;
>
> // This method calculates and sets up all the fields above
> // based on the metrics in g.
> void prepareLayoutValues(Graphics g) {
> Dimension pageSize;
> int res;
>
> if (g instanceof PrintGraphics) {
> PrintJob pj = ((PrintGraphics)g).getPrintJob();
> res = pj.getPageResolution();
> pageSize = pj.getPageDimension();
>
> // getPageDimension() does not return the correct result.
> // The following is a workaround.
> res = getToolkit().getScreenResolution();
> pageSize = new Dimension((int)(8.5 * res), 11 * res);
> } else {
> res = getToolkit().getScreenResolution();
> pageSize = new Dimension((int)(8.5 * res), 11 * res);
> }
> pageMargin = (int)(.75 * res);
> pageSize = new Dimension(pageSize.height-pageMargin,
> pageSize.width-pageMargin);
>
> // Reserve space for the header.
> FontMetrics fm = g.getFontMetrics(headerFont);
>
> pageRect = new Rectangle(0, 0, pageSize.width/2,
>pageSize.height);
> boxRect = inset(pageRect, margin, 2*fm.getHeight(), margin, 0);
> listingRect = inset(boxRect, margin, margin, margin, margin);
>
> // Set up listing font.
> fm = g.getFontMetrics(font);
>
> int lpp = listingRect.height/fm.getHeight();
> int cpp = listingRect.width/fm.charWidth('M');
>
> // The metrics have changed so recompute the broken lines.
> if (lpp != linesPerPage || cpp != charsPerLine) {
> brokenLines = new Vector();
> for (int i=0; i<lines.size(); i++) {
> String s = (String)lines.elementAt(i);
>
> while (s.length() > cpp) {
> brokenLines.addElement(s.substring(0, cpp)+"+");
> s = s.substring(cpp);
> }
> brokenLines.addElement(s);
> }
>
> linesPerPage = lpp;
> charsPerLine = cpp;
> }
> }
>
> Rectangle inset(Rectangle r, int left, int top, int right, int
>bottom) {
> Rectangle s = new Rectangle(r);
> s.x += left;
> s.y += top;
> s.width -= left+right;
> s.height -= top+bottom;
> return s;
> }
> }
>
>
>
>
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