List of usage examples for java.awt Graphics2D getFontMetrics
public FontMetrics getFontMetrics()
From source file:org.apache.ofbiz.common.CommonEvents.java
public static String getCaptcha(HttpServletRequest request, HttpServletResponse response) { try {// w w w .ja va2 s.co m Delegator delegator = (Delegator) request.getAttribute("delegator"); final String captchaSizeConfigName = StringUtils.defaultIfEmpty(request.getParameter("captchaSize"), "default"); final String captchaSizeConfig = EntityUtilProperties.getPropertyValue("captcha", "captcha." + captchaSizeConfigName, delegator); final String[] captchaSizeConfigs = captchaSizeConfig.split("\\|"); final String captchaCodeId = StringUtils.defaultIfEmpty(request.getParameter("captchaCodeId"), ""); // this is used to uniquely identify in the user session the attribute where the captcha code for the last captcha for the form is stored final int fontSize = Integer.parseInt(captchaSizeConfigs[0]); final int height = Integer.parseInt(captchaSizeConfigs[1]); final int width = Integer.parseInt(captchaSizeConfigs[2]); final int charsToPrint = UtilProperties.getPropertyAsInteger("captcha", "captcha.code_length", 6); final char[] availableChars = EntityUtilProperties .getPropertyValue("captcha", "captcha.characters", delegator).toCharArray(); //It is possible to pass the font size, image width and height with the request as well Color backgroundColor = Color.gray; Color borderColor = Color.DARK_GRAY; Color textColor = Color.ORANGE; Color circleColor = new Color(160, 160, 160); Font textFont = new Font("Arial", Font.PLAIN, fontSize); int circlesToDraw = 6; float horizMargin = 20.0f; double rotationRange = 0.7; // in radians BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = (Graphics2D) bufferedImage.getGraphics(); g.setColor(backgroundColor); g.fillRect(0, 0, width, height); //Generating some circles for background noise g.setColor(circleColor); for (int i = 0; i < circlesToDraw; i++) { int circleRadius = (int) (Math.random() * height / 2.0); int circleX = (int) (Math.random() * width - circleRadius); int circleY = (int) (Math.random() * height - circleRadius); g.drawOval(circleX, circleY, circleRadius * 2, circleRadius * 2); } g.setColor(textColor); g.setFont(textFont); FontMetrics fontMetrics = g.getFontMetrics(); int maxAdvance = fontMetrics.getMaxAdvance(); int fontHeight = fontMetrics.getHeight(); String captchaCode = RandomStringUtils.random(6, availableChars); float spaceForLetters = -horizMargin * 2 + width; float spacePerChar = spaceForLetters / (charsToPrint - 1.0f); for (int i = 0; i < captchaCode.length(); i++) { // this is a separate canvas used for the character so that // we can rotate it independently int charWidth = fontMetrics.charWidth(captchaCode.charAt(i)); int charDim = Math.max(maxAdvance, fontHeight); int halfCharDim = (charDim / 2); BufferedImage charImage = new BufferedImage(charDim, charDim, BufferedImage.TYPE_INT_ARGB); Graphics2D charGraphics = charImage.createGraphics(); charGraphics.translate(halfCharDim, halfCharDim); double angle = (Math.random() - 0.5) * rotationRange; charGraphics.transform(AffineTransform.getRotateInstance(angle)); charGraphics.translate(-halfCharDim, -halfCharDim); charGraphics.setColor(textColor); charGraphics.setFont(textFont); int charX = (int) (0.5 * charDim - 0.5 * charWidth); charGraphics.drawString("" + captchaCode.charAt(i), charX, ((charDim - fontMetrics.getAscent()) / 2 + fontMetrics.getAscent())); float x = horizMargin + spacePerChar * (i) - charDim / 2.0f; int y = ((height - charDim) / 2); g.drawImage(charImage, (int) x, y, charDim, charDim, null, null); charGraphics.dispose(); } // Drawing the image border g.setColor(borderColor); g.drawRect(0, 0, width - 1, height - 1); g.dispose(); response.setContentType("image/jpeg"); ImageIO.write(bufferedImage, "jpg", response.getOutputStream()); HttpSession session = request.getSession(); Map<String, String> captchaCodeMap = UtilGenerics.checkMap(session.getAttribute("_CAPTCHA_CODE_")); if (captchaCodeMap == null) { captchaCodeMap = new HashMap<String, String>(); session.setAttribute("_CAPTCHA_CODE_", captchaCodeMap); } captchaCodeMap.put(captchaCodeId, captchaCode); } catch (Exception ioe) { Debug.logError(ioe.getMessage(), module); } return "success"; }
From source file:org.ofbiz.common.CommonEvents.java
public static String getCaptcha(HttpServletRequest request, HttpServletResponse response) { try {//w w w . ja v a 2 s .c om Delegator delegator = (Delegator) request.getAttribute("delegator"); final String captchaSizeConfigName = StringUtils.defaultIfEmpty(request.getParameter("captchaSize"), "default"); final String captchaSizeConfig = EntityUtilProperties.getPropertyValue("captcha.properties", "captcha." + captchaSizeConfigName, delegator); final String[] captchaSizeConfigs = captchaSizeConfig.split("\\|"); final String captchaCodeId = StringUtils.defaultIfEmpty(request.getParameter("captchaCodeId"), ""); // this is used to uniquely identify in the user session the attribute where the captcha code for the last captcha for the form is stored final int fontSize = Integer.parseInt(captchaSizeConfigs[0]); final int height = Integer.parseInt(captchaSizeConfigs[1]); final int width = Integer.parseInt(captchaSizeConfigs[2]); final int charsToPrint = UtilProperties.getPropertyAsInteger("captcha.properties", "captcha.code_length", 6); final char[] availableChars = EntityUtilProperties .getPropertyValue("captcha.properties", "captcha.characters", delegator).toCharArray(); //It is possible to pass the font size, image width and height with the request as well Color backgroundColor = Color.gray; Color borderColor = Color.DARK_GRAY; Color textColor = Color.ORANGE; Color circleColor = new Color(160, 160, 160); Font textFont = new Font("Arial", Font.PLAIN, fontSize); int circlesToDraw = 6; float horizMargin = 20.0f; double rotationRange = 0.7; // in radians BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D g = (Graphics2D) bufferedImage.getGraphics(); g.setColor(backgroundColor); g.fillRect(0, 0, width, height); //Generating some circles for background noise g.setColor(circleColor); for (int i = 0; i < circlesToDraw; i++) { int circleRadius = (int) (Math.random() * height / 2.0); int circleX = (int) (Math.random() * width - circleRadius); int circleY = (int) (Math.random() * height - circleRadius); g.drawOval(circleX, circleY, circleRadius * 2, circleRadius * 2); } g.setColor(textColor); g.setFont(textFont); FontMetrics fontMetrics = g.getFontMetrics(); int maxAdvance = fontMetrics.getMaxAdvance(); int fontHeight = fontMetrics.getHeight(); String captchaCode = RandomStringUtils.random(6, availableChars); float spaceForLetters = -horizMargin * 2 + width; float spacePerChar = spaceForLetters / (charsToPrint - 1.0f); for (int i = 0; i < captchaCode.length(); i++) { // this is a separate canvas used for the character so that // we can rotate it independently int charWidth = fontMetrics.charWidth(captchaCode.charAt(i)); int charDim = Math.max(maxAdvance, fontHeight); int halfCharDim = (charDim / 2); BufferedImage charImage = new BufferedImage(charDim, charDim, BufferedImage.TYPE_INT_ARGB); Graphics2D charGraphics = charImage.createGraphics(); charGraphics.translate(halfCharDim, halfCharDim); double angle = (Math.random() - 0.5) * rotationRange; charGraphics.transform(AffineTransform.getRotateInstance(angle)); charGraphics.translate(-halfCharDim, -halfCharDim); charGraphics.setColor(textColor); charGraphics.setFont(textFont); int charX = (int) (0.5 * charDim - 0.5 * charWidth); charGraphics.drawString("" + captchaCode.charAt(i), charX, ((charDim - fontMetrics.getAscent()) / 2 + fontMetrics.getAscent())); float x = horizMargin + spacePerChar * (i) - charDim / 2.0f; int y = ((height - charDim) / 2); g.drawImage(charImage, (int) x, y, charDim, charDim, null, null); charGraphics.dispose(); } // Drawing the image border g.setColor(borderColor); g.drawRect(0, 0, width - 1, height - 1); g.dispose(); response.setContentType("image/jpeg"); ImageIO.write(bufferedImage, "jpg", response.getOutputStream()); HttpSession session = request.getSession(); Map<String, String> captchaCodeMap = UtilGenerics.checkMap(session.getAttribute("_CAPTCHA_CODE_")); if (captchaCodeMap == null) { captchaCodeMap = new HashMap<String, String>(); session.setAttribute("_CAPTCHA_CODE_", captchaCodeMap); } captchaCodeMap.put(captchaCodeId, captchaCode); } catch (Exception ioe) { Debug.logError(ioe.getMessage(), module); } return "success"; }
From source file:Main.java
@Override protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g.create(); g2d.setColor(Color.RED);/*from w ww. j ava 2 s. com*/ g2d.drawLine(getWidth() / 2, 0, getWidth() / 2, getHeight()); g2d.drawLine(0, getHeight() / 2, getWidth(), getHeight() / 2); Font font = new Font("Arial", Font.BOLD, 48); g2d.setFont(font); FontMetrics fm = g2d.getFontMetrics(); int x = ((getWidth() - fm.stringWidth(text)) / 2); int y = ((getHeight() - fm.getHeight()) / 2) + fm.getAscent(); g2d.setColor(Color.BLACK); g2d.drawString(text, x, y); g2d.dispose(); }
From source file:org.springframework.cloud.stream.app.image.recognition.processor.ImageRecognitionOutputMessageBuilder.java
/** * Augment the input image by adding the recognized classes. * * @param imageBytes input image as byte array * @param result computed recognition labels * @return the image augmented with recognized labels. */// www. jav a 2 s . com private byte[] drawLabels(byte[] imageBytes, Object result) { try { if (result != null) { BufferedImage originalImage = ImageIO.read(new ByteArrayInputStream(imageBytes)); Graphics2D g = originalImage.createGraphics(); g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); FontMetrics fm = g.getFontMetrics(); Tuple resultTuple = new JsonStringToTupleConverter().convert(result.toString()); ArrayList<Tuple> labels = (ArrayList) resultTuple.getValues().get(0); int x = 1; int y = 1; for (Tuple l : labels) { String labelName = l.getFieldNames().get(0); int probability = (int) (100 * l.getFloat(0)); String title = labelName + ": " + probability + "%"; Rectangle2D rect = fm.getStringBounds(title, g); g.setColor(bgColor); g.fillRect(x, y, (int) rect.getWidth() + 6, (int) rect.getHeight()); g.setColor(textColor); g.drawString(title, x + 3, (int) (y + rect.getHeight() - 3)); y = (int) (y + rect.getHeight() + 1); } ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(originalImage, IMAGE_FORMAT, baos); baos.flush(); imageBytes = baos.toByteArray(); baos.close(); } } catch (IOException e) { logger.error("Failed to draw labels in the input image", e); } return imageBytes; }
From source file:edu.ku.brc.ui.GradiantButton.java
/** * Paints the text of the control/*from w ww. j ava 2 s. c o m*/ * @param g2 the graphics to be painted into * @param w the width of the control * @param h the height of the control * @param text the string */ protected void drawText(Graphics2D g2, int w, int h, String text) { // calculate the width and height int fw = g2.getFontMetrics().stringWidth(text); int fh = g2.getFontMetrics().getAscent() - g2.getFontMetrics().getDescent(); int textx = this.getHorizontalAlignment() == SwingConstants.LEFT ? Math.max(getInsets().left, 2) : (w - fw) / 2; int texty = h / 2 + fh / 2; // draw the text g2.setColor(textColorShadow); g2.drawString(text, textx, texty); g2.setColor(textColor); g2.drawString(text, textx, texty); }
From source file:ru.runa.wfe.graph.image.figure.AbstractFigure.java
private int drawText(Graphics2D graphics, String text, int hOffset) { Rectangle r = getTextBoundsRectangle(); Rectangle2D textBounds = graphics.getFontMetrics().getStringBounds(text, graphics); if (textBounds.getWidth() > r.getWidth() - 4) { int y = coords[1] + hOffset; AttributedString attributedString = new AttributedString(text); attributedString.addAttribute(TextAttribute.FONT, graphics.getFont()); AttributedCharacterIterator characterIterator = attributedString.getIterator(); LineBreakMeasurer measurer = new LineBreakMeasurer(characterIterator, graphics.getFontRenderContext()); while (measurer.getPosition() < characterIterator.getEndIndex()) { TextLayout textLayout = measurer.nextLayout((float) r.getWidth() - 4); y += textLayout.getAscent(); float x = (float) (r.getCenterX() + 2 - textLayout.getBounds().getCenterX()); textLayout.draw(graphics, x, y); y += textLayout.getDescent() + textLayout.getLeading(); }/* w ww. j a v a2 s. c om*/ return y - coords[1]; } else { graphics.drawString(text, (float) (r.getCenterX() + 2 - textBounds.getCenterX()), (float) (coords[1] + textBounds.getHeight() + hOffset)); return (int) (textBounds.getHeight() + hOffset + 3); } }
From source file:de.codesourcery.planning.swing.DateAxis.java
public BoundingBox render(ITimelineCallback callback, boolean layoutOnly) { final Calendar cal = Calendar.getInstance(); cal.setTime(startDate);/*w ww .j a v a 2 s. c om*/ cal.set(Calendar.MILLISECOND, 0); Date currentDate = cal.getTime(); final Date endDate = duration.addTo(startDate); BoundingBox lastLabel = null; final int labelSpacing = 10; final Graphics2D graphics = callback.getGraphics(); final int fontHeight = graphics.getFontMetrics().getHeight(); final double scalingFactor = getXScalingFactor(callback.getBoundingBox()); final BoundingBox box = callback.getBoundingBox(); double x = callback.getBoundingBox().getX(); final int tickToLabelSpacing = 2; final int tickLength = fontHeight; final int axisHeight = fontHeight + tickLength + tickToLabelSpacing; final double xIncrement = Math.floor(tickDuration.toSeconds() * scalingFactor); final Color oldColor = graphics.getColor(); // while (currentDate.compareTo(endDate) <= 0) { final int currentX = (int) Math.floor(x); if (lastLabel == null || lastLabel.getMaxX() < x) { final String labelText = callback.getLabelProvider().getTimelineLabel(currentDate); if (!StringUtils.isBlank(labelText)) { final Rectangle2D stringBounds = callback.getStringBounds(labelText); if (!layoutOnly) { graphics.setColor(Color.BLACK); // draw tick final Stroke oldStroke = graphics.getStroke(); graphics.setStroke(new BasicStroke(2.0f)); graphics.drawLine(currentX, box.getY() + axisHeight, currentX, box.getY() + fontHeight + tickToLabelSpacing); graphics.setStroke(oldStroke); // draw label callback.drawString(Color.BLACK, currentX, box.getY(), labelText); } final BoundingBox labelBox = new BoundingBox(currentX, box.getY(), currentX + (int) stringBounds.getWidth() + labelSpacing, box.getY() + (int) stringBounds.getHeight()); if (lastLabel == null) { lastLabel = labelBox; } else { lastLabel.add(labelBox); } } } else { // draw short tick if (!layoutOnly) { final int halfTickHeight = (int) Math.floor(tickLength / 2.0d); graphics.drawLine(currentX, box.getY() + axisHeight, currentX, box.getY() + axisHeight - halfTickHeight); } } // draw part of axis if (!layoutOnly) { graphics.drawLine((int) x, box.getY() + axisHeight, (int) (x + xIncrement), box.getY() + axisHeight); } x += xIncrement; currentDate = tickDuration.addTo(currentDate); } callback.getGraphics().setColor(oldColor); final BoundingBox result = lastLabel != null ? lastLabel : new BoundingBox(0, 0, 0, 0); result.incHeight(axisHeight); return result; }
From source file:uk.co.real_logic.aeron.tools.perf_tools.AeronLatencyUnderLoadPublisher.java
private void generateScatterPlot() throws IOException { final BufferedImage image = new BufferedImage(1800, 1000, BufferedImage.TYPE_INT_ARGB); final Graphics2D g2 = image.createGraphics(); final FontMetrics fm = g2.getFontMetrics(); final String filename = "throughputency.png"; final File imageFile = new File(filename); final int height = 940; double min = Double.MAX_VALUE; double max = Double.MIN_VALUE; for (final long timestamp : timestamps) { final double ts = timestamp / 1000.0; if (ts < min) { min = ts;//from w w w .ja v a2 s .c om } if (ts > max) { max = ts; } } final double stepY = height / max; g2.setColor(Color.white); g2.fillRect(0, 0, 1800, 1000); g2.setColor(Color.black); g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); g2.drawString("Latency ScatterPlot (microseconds)", 900 - fm.stringWidth("Latency ScatterPlot (microseconds)") / 2, 20); g2.drawString("" + max, 10, 20); g2.drawLine(100, 20, 100, 960); g2.drawLine(100, 960, 1790, 960); int start = 0; int end = 100; final double width = 1690.0 / 7.0; g2.setColor(Color.red); plotSubset(g2, start, end, "10 msgs/sec", 100, width, stepY, means[0]); start = 100; end = 1100; g2.setColor(Color.green); plotSubset(g2, start, end, "100 msgs/sec", 100 + width, width, stepY, means[1]); start = 1100; end = 11100; g2.setColor(Color.blue); plotSubset(g2, start, end, "1K msgs/sec", 100 + width * 2, width, stepY, means[2]); start = 11100; end = 111100; g2.setColor(Color.cyan); plotSubset(g2, start, end, "10K msgs/sec", 100 + width * 3, width, stepY, means[3]); start = 111100; end = 1111100; g2.setColor(Color.magenta); plotSubset(g2, start, end, "100K msgs/sec", 100 + width * 4, width, stepY, means[4]); start = 1111100; end = 11111100; g2.setColor(Color.yellow); plotSubset(g2, start, end, "1M msgs/sec", 100 + width * 5, width, stepY, means[5]); start = 11111100; end = 41111100; g2.setColor(Color.orange); plotSubset(g2, start, end, "3M msgs/sec", 100 + width * 6, width, stepY, means[6]); ImageIO.write(image, "png", imageFile); }
From source file:org.cybercat.automation.addons.common.ScreenshotManager.java
public BufferedImage applySubs(BufferedImage image, String text) { Graphics2D g2 = image.createGraphics(); g2.setFont(font);// w w w . j a v a 2 s . c om int height = image.getHeight(); int width = image.getWidth(); g2.setColor(fontColor); String[] subs = text.split("\n"); FontMetrics fMetrics = g2.getFontMetrics(); int lineHeight = fMetrics.getHeight(); int lineWidth; for (int i = subs.length; i > 0; i--) { lineWidth = fMetrics.stringWidth(subs[i - 1]); int y = height - bottomOffset - ((subs.length - i) * (lineHeight + lineOffset)); int x = (width / 2) - (lineWidth / 2); g2.drawString(subs[i - 1], x, y); } g2.dispose(); return image; }
From source file:org.shredzone.commons.captcha.impl.DefaultCaptchaGenerator.java
/** * Draws a single character.//from w ww. j av a2 s .c o m * * @param g2d * {@link Graphics2D} context * @param ch * character to draw * @param x * left x position of the character * @param boxWidth * width of the box */ private void drawCharacter(Graphics2D g2d, char ch, int x, int boxWidth) { double degree = (rnd.nextDouble() * rotationAmplitude * 2) - rotationAmplitude; double scale = 1 - (rnd.nextDouble() * scaleAmplitude / 100); Graphics2D cg2d = (Graphics2D) g2d.create(); cg2d.setFont(font.deriveFont(fontSize)); cg2d.translate(x + (boxWidth / 2), height / 2); cg2d.rotate(degree * PI / 90); cg2d.scale(scale, scale); FontMetrics fm = cg2d.getFontMetrics(); int charWidth = fm.charWidth(ch); int charHeight = fm.getAscent() + fm.getDescent(); cg2d.drawString(String.valueOf(ch), -(charWidth / 2), fm.getAscent() - (charHeight / 2)); cg2d.dispose(); }