private void paintCoords(int xSize, int ySize) { float yStep = 1; while ((yStep * (ySize - 50) / (threshold - lowThreshold)) < 20) yStep += 1; FontMetrics metrics = g.getFontMetrics(); int height = metrics.getAscent(); for (float y = lowThreshold; y < threshold; y += yStep) { int yCoord = 10 + (int) ((y - lowThreshold) * (ySize - 50) / (threshold - lowThreshold)); g.setColor(Color.LIGHT_GRAY); g.drawLine(45, yCoord, xSize, yCoord); g.setColor(Color.BLACK); String text = "" + y; text = trimStringToLength(text, 5); int width = metrics.stringWidth(text); g.drawString(text, 40 - width, yCoord + height / 2); } g.setColor(Color.LIGHT_GRAY); g.drawLine(45, ySize - 40, xSize, ySize - 40); g.setColor(Color.BLACK); String text = "" + threshold; text = trimStringToLength(text, 5); int width = metrics.stringWidth(text); g.drawString(text, 40 - width, ySize - 40 + height / 2); g.drawLine(45, 10, 45, ySize - 35); g.drawLine(45, ySize - 35, xSize, ySize - 35); }
private void measure() { FontMetrics fontmetrics = getFontMetrics(getFont()); if (fontmetrics == null) return; line_height = fontmetrics.getHeight(); line_ascent = fontmetrics.getAscent(); max_width = 0; for (int i = 0; i < num_lines; i++) { line_widths[i] = fontmetrics.stringWidth(lines[i]); if (line_widths[i] > max_width) max_width = line_widths[i]; } max_width += 2 * btnMarginWidth; max_height = num_lines * line_height + 2 * btnMarginHeight; }
/** * The constructor for this class has a bunch of arguments: The frame argument is required for all * printing in Java. The jobname appears left justified at the top of each printed page. The font * size is specified in points, as on-screen font sizes are. The margins are specified in inches * (or fractions of inches). */ public HardcopyWriter( Frame frame, String jobname, int fontsize, double leftmargin, double rightmargin, double topmargin, double bottommargin) throws HardcopyWriter.PrintCanceledException { // Get the PrintJob object with which we'll do all the printing. // The call is synchronized on the static printprops object, which // means that only one print dialog can be popped up at a time. // If the user clicks Cancel in the print dialog, throw an exception. Toolkit toolkit = frame.getToolkit(); // get Toolkit from Frame synchronized (printprops) { job = toolkit.getPrintJob(frame, jobname, printprops); } if (job == null) throw new PrintCanceledException("User cancelled print request"); pagesize = job.getPageDimension(); // query the page size pagedpi = job.getPageResolution(); // query the page resolution // Bug Workaround: // On windows, getPageDimension() and getPageResolution don't work, so // we've got to fake them. if (System.getProperty("os.name").regionMatches(true, 0, "windows", 0, 7)) { // Use screen dpi, which is what the PrintJob tries to emulate, anyway pagedpi = toolkit.getScreenResolution(); System.out.println(pagedpi); // Assume a 8.5" x 11" page size. A4 paper users have to change this. pagesize = new Dimension((int) (8.5 * pagedpi), 11 * pagedpi); System.out.println(pagesize); // We also have to adjust the fontsize. It is specified in points, // (1 point = 1/72 of an inch) but Windows measures it in pixels. fontsize = fontsize * pagedpi / 72; System.out.println(fontsize); System.out.flush(); } // Compute coordinates of the upper-left corner of the page. // I.e. the coordinates of (leftmargin, topmargin). Also compute // the width and height inside of the margins. x0 = (int) (leftmargin * pagedpi); y0 = (int) (topmargin * pagedpi); width = pagesize.width - (int) ((leftmargin + rightmargin) * pagedpi); height = pagesize.height - (int) ((topmargin + bottommargin) * pagedpi); // Get body font and font size font = new Font("Monospaced", Font.PLAIN, fontsize); metrics = toolkit.getFontMetrics(font); lineheight = metrics.getHeight(); lineascent = metrics.getAscent(); charwidth = metrics.charWidth('0'); // Assumes a monospaced font! // Now compute columns and lines will fit inside the margins chars_per_line = width / charwidth; lines_per_page = height / lineheight; // Get header font information // And compute baseline of page header: 1/8" above the top margin headerfont = new Font("SansSerif", Font.ITALIC, fontsize); headermetrics = toolkit.getFontMetrics(headerfont); headery = y0 - (int) (0.125 * pagedpi) - headermetrics.getHeight() + headermetrics.getAscent(); // Compute the date/time string to display in the page header DateFormat df = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.SHORT); df.setTimeZone(TimeZone.getDefault()); time = df.format(new Date()); this.jobname = jobname; // save name this.fontsize = fontsize; // save font size }