List of usage examples for java.awt.font TextLayout isLeftToRight
public boolean isLeftToRight()
From source file:Utils.java
/** * Renders a paragraph of text (line breaks ignored) to an image (created and returned). * * @param font The font to use/* ww w .ja v a2 s . c om*/ * @param textColor The color of the text * @param text The message * @param width The width the text should be limited to * @return An image with the text rendered into it */ public static BufferedImage renderTextToImage(Font font, Color textColor, String text, int width) { Hashtable map = new Hashtable(); map.put(TextAttribute.FONT, font); AttributedString attributedString = new AttributedString(text, map); AttributedCharacterIterator paragraph = attributedString.getIterator(); FontRenderContext frc = new FontRenderContext(null, false, false); int paragraphStart = paragraph.getBeginIndex(); int paragraphEnd = paragraph.getEndIndex(); LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc); float drawPosY = 0; //First time around, just determine the height while (lineMeasurer.getPosition() < paragraphEnd) { TextLayout layout = lineMeasurer.nextLayout(width); // Move it down drawPosY += layout.getAscent() + layout.getDescent() + layout.getLeading(); } BufferedImage image = createCompatibleImage(width, (int) drawPosY); Graphics2D graphics = (Graphics2D) image.getGraphics(); graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); drawPosY = 0; lineMeasurer.setPosition(paragraphStart); while (lineMeasurer.getPosition() < paragraphEnd) { TextLayout layout = lineMeasurer.nextLayout(width); // Move y-coordinate by the ascent of the layout. drawPosY += layout.getAscent(); /* Compute pen x position. If the paragraph is right-to-left, we want to align the TextLayouts to the right edge of the panel. */ float drawPosX; if (layout.isLeftToRight()) { drawPosX = 0; } else { drawPosX = width - layout.getAdvance(); } // Draw the TextLayout at (drawPosX, drawPosY). layout.draw(graphics, drawPosX, drawPosY); // Move y-coordinate in preparation for next layout. drawPosY += layout.getDescent() + layout.getLeading(); } graphics.dispose(); return image; }
From source file:MainClass.java
public void paint(Graphics g) { Dimension size = getSize();// w ww . j a va 2s.c om String s = "To java2s.com or not to java2s.com, that is a question"; Hashtable map = new Hashtable(); map.put(TextAttribute.SIZE, new Float(32.0f)); AttributedString as = new AttributedString(s, map); map = new Hashtable(); map.put(TextAttribute.POSTURE, TextAttribute.POSTURE_OBLIQUE); as.addAttributes(map, 33, 52); AttributedCharacterIterator aci = as.getIterator(); int startIndex = aci.getBeginIndex(); int endIndex = aci.getEndIndex(); LineBreakMeasurer measurer; measurer = new LineBreakMeasurer(aci, new FontRenderContext(null, false, false)); measurer.setPosition(startIndex); float wrappingWidth = (float) size.width; float Y = 0.0f; while (measurer.getPosition() < endIndex) { TextLayout layout = measurer.nextLayout(wrappingWidth); Y += layout.getAscent(); float X = 0.0f; switch (justify) { case LEFT: if (layout.isLeftToRight()) X = 0.0f; else X = wrappingWidth - layout.getAdvance(); break; case RIGHT: if (layout.isLeftToRight()) X = wrappingWidth - layout.getVisibleAdvance(); else X = wrappingWidth; break; case CENTER: if (layout.isLeftToRight()) X = (wrappingWidth - layout.getVisibleAdvance()) / 2; else X = (wrappingWidth + layout.getAdvance()) / 2 - layout.getAdvance(); break; case EQUALITY: layout = layout.getJustifiedLayout(wrappingWidth); } layout.draw((Graphics2D) g, X, Y); Y += layout.getDescent() + layout.getLeading(); } }
From source file:LineBreakSample.java
public void paintComponent(Graphics g) { super.paintComponent(g); setBackground(Color.white);/*from w w w. j a va 2s .co m*/ Graphics2D graphics2D = (Graphics2D) g; // Set formatting width to width of Component. Dimension size = getSize(); float formatWidth = (float) size.width; float drawPosY = 0; lineMeasurer.setPosition(paragraphStart); // Get lines from lineMeasurer until the entire // paragraph has been displayed. while (lineMeasurer.getPosition() < paragraphEnd) { // Retrieve next layout. TextLayout layout = lineMeasurer.nextLayout(formatWidth); // Move y-coordinate by the ascent of the layout. drawPosY += layout.getAscent(); // Compute pen x position. If the paragraph is // right-to-left, we want to align the TextLayouts // to the right edge of the panel. float drawPosX; if (layout.isLeftToRight()) { drawPosX = 0; } else { drawPosX = formatWidth - layout.getAdvance(); } // Draw the TextLayout at (drawPosX, drawPosY). layout.draw(graphics2D, drawPosX, drawPosY); // Move y-coordinate in preparation for next layout. drawPosY += layout.getDescent() + layout.getLeading(); } }
From source file:com.pronoiahealth.olhie.server.services.BookCoverImageService.java
/** * Create an image that contains text/*w w w. ja v a 2 s . c o m*/ * * @param height * @param width * @param text * @param textColor * @param center * @param fontMap * @param type * @return */ private BufferedImage createText(int height, int width, String text, String textColor, boolean center, Map<TextAttribute, Object> fontMap, int type) { BufferedImage img = new BufferedImage(width, height, type); Graphics2D g2d = null; try { g2d = (Graphics2D) img.getGraphics(); // Create attributed text AttributedString txt = new AttributedString(text, fontMap); // Set graphics color g2d.setColor(Color.decode(textColor)); // Create a new LineBreakMeasurer from the paragraph. // It will be cached and re-used. AttributedCharacterIterator paragraph = txt.getIterator(); int paragraphStart = paragraph.getBeginIndex(); int paragraphEnd = paragraph.getEndIndex(); FontRenderContext frc = g2d.getFontRenderContext(); LineBreakMeasurer lineMeasurer = new LineBreakMeasurer(paragraph, frc); // Set break width to width of Component. float breakWidth = (float) width; float drawPosY = 0; // Set position to the index of the first character in the // paragraph. lineMeasurer.setPosition(paragraphStart); // Get lines until the entire paragraph has been displayed. while (lineMeasurer.getPosition() < paragraphEnd) { // Retrieve next layout. A cleverer program would also cache // these layouts until the component is re-sized. TextLayout layout = lineMeasurer.nextLayout(breakWidth); // Compute pen x position. If the paragraph is right-to-left we // will align the TextLayouts to the right edge of the panel. // Note: drawPosX is always where the LEFT of the text is // placed. float drawPosX = layout.isLeftToRight() ? 0 : breakWidth - layout.getAdvance(); if (center == true) { double xOffSet = (width - layout.getBounds().getWidth()) / 2; drawPosX = drawPosX + new Float(xOffSet); } // Move y-coordinate by the ascent of the layout. drawPosY += layout.getAscent(); // Draw the TextLayout at (drawPosX, drawPosY). layout.draw(g2d, drawPosX, drawPosY); // Move y-coordinate in preparation for next layout. drawPosY += layout.getDescent() + layout.getLeading(); } } finally { if (g2d != null) { g2d.dispose(); } } return img; }
From source file:com.github.lucapino.sheetmaker.renderer.JavaTemplateRenderer.java
public void drawString(Graphics g, String text, RectangularShape bounds, Align align, double angle, boolean multiline) { Graphics2D g2 = (Graphics2D) g; Font font = g2.getFont();//from w w w.j a v a2 s . c o m if (angle != 0) { g2.setFont(font.deriveFont(AffineTransform.getRotateInstance(Math.toRadians(angle)))); } Rectangle2D sSize = g2.getFontMetrics().getStringBounds(text, g2); Point2D pos = getPoint(bounds, align); double x = pos.getX(); double y = pos.getY() + sSize.getHeight(); switch (align) { case TopCenter: case BottomCenter: case Center: x -= (sSize.getWidth() / 2); break; case TopRight: case MiddleRight: case BottomRight: x -= (sSize.getWidth()); break; case BottomLeft: case MiddleLeft: case TopLeft: break; } if (multiline) { // Create a new LineBreakMeasurer from the paragraph. // It will be cached and re-used. //if (lineMeasurer == null) { AttributedCharacterIterator paragraph = new AttributedString(text).getIterator(); paragraphStart = paragraph.getBeginIndex(); paragraphEnd = paragraph.getEndIndex(); FontRenderContext frc = g2.getFontRenderContext(); lineMeasurer = new LineBreakMeasurer(paragraph, frc); //} // Set break width to width of Component. float breakWidth = (float) bounds.getWidth(); float drawPosY = (float) y; // Set position to the index of the first character in the paragraph. lineMeasurer.setPosition(paragraphStart); // Get lines until the entire paragraph has been displayed. while (lineMeasurer.getPosition() < paragraphEnd) { // Retrieve next layout. A cleverer program would also cache // these layouts until the component is re-sized. TextLayout layout = lineMeasurer.nextLayout(breakWidth); // Compute pen x position. If the paragraph is right-to-left we // will align the TextLayouts to the right edge of the panel. // Note: this won't occur for the English text in this sample. // Note: drawPosX is always where the LEFT of the text is placed. float drawPosX = layout.isLeftToRight() ? (float) x : (float) x + breakWidth - layout.getAdvance(); // Move y-coordinate by the ascent of the layout. drawPosY += layout.getAscent(); // Draw the TextLayout at (drawPosX, drawPosY). layout.draw(g2, drawPosX, drawPosY); // Move y-coordinate in preparation for next layout. drawPosY += layout.getDescent() + layout.getLeading(); } } else { g2.drawString(text, (float) x, (float) y); } g2.setFont(font); }