- * Many Java programs use Graphics2D to draw stuff on the screen, and while - * it is easy to save the output as a png or jpeg file, it is a little - * harder to export it as an EPS for including in a document or paper. - *
- * This class makes the whole process extremely easy, because you can use - * it as if it's a Graphics2D object. The only difference is that all of - * the implemented methods create EPS output, which means the diagrams you - * draw can be resized without leading to any of the jagged edges you may - * see when resizing pixel-based images, such as jpeg and png files. - *
- * Example usage: - *
- *
Graphics2D g = new EpsGraphics2D(); - * g.setColor(Color.black); - * - * // Line thickness 2. - * g.setStroke(new BasicStroke(2.0f)); - * - * // Draw a line. - * g.drawLine(10, 10, 50, 10); - * - * // Fill a rectangle in blue - * g.setColor(Color.blue); - * g.fillRect(10, 0, 20, 20); - * - * // Get the EPS output. - * String output = g.toString();- *
- * You do not need to worry about the size of the canvas when drawing on a - * EpsGraphics2D object. The bounding box of the EPS document will - * automatically resize to accomodate new items that you draw. - *
- * Not all methods are implemented yet. Those that are not are clearly - * labelled. - *
- * Copyright Paul Mutton, - * http://www.jibble.org/ - * - */ -public class EpsGraphics2D extends java.awt.Graphics2D { - - - public static final String VERSION = "0.8.8"; - - - /** - * Constructs a new EPS document that is initially empty and can be - * drawn on like a Graphics2D object. The EPS document is stored in - * memory. - */ - public EpsGraphics2D() { - this("Untitled"); - } - - - /** - * Constructs a new EPS document that is initially empty and can be - * drawn on like a Graphics2D object. The EPS document is stored in - * memory. - */ - public EpsGraphics2D(String title) { - _document = new EpsDocument(title); - _backgroundColor = Color.white; - _clip = null; - _transform = new AffineTransform(); - _clipTransform = new AffineTransform(); - _accurateTextMode = true; - setColor(Color.black); - setPaint(Color.black); - setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR)); - setFont(Font.decode(null)); - setStroke(new BasicStroke()); - } - - - /** - * Constructs a new EPS document that is initially empty and can be - * drawn on like a Graphics2D object. The EPS document is written to - * the file as it goes, which reduces memory usage. The bounding box of - * the document is fixed and specified at construction time by - * minX,minY,maxX,maxY. The file is flushed and closed when the close() - * method is called. - */ - public EpsGraphics2D(String title, File file, int minX, int minY, int maxX, int maxY) throws IOException { - this(title, new FileOutputStream(file), minX, minY, maxX, maxY); - } - - - /** - * Constructs a new EPS document that is initially empty and can be - * drawn on like a Graphics2D object. The EPS document is written to - * the output stream as it goes, which reduces memory usage. The - * bounding box of the document is fixed and specified at construction - * time by minX,minY,maxX,maxY. The output stream is flushed and closed - * when the close() method is called. - */ - public EpsGraphics2D(String title, OutputStream outputStream, int minX, int minY, int maxX, int maxY) throws IOException { - this(title); - _document = new EpsDocument(title, outputStream, minX, minY, maxX, maxY); - } - - - /** - * Constructs a new EpsGraphics2D instance that is a copy of the - * supplied argument and points at the same EpsDocument. - */ - protected EpsGraphics2D(EpsGraphics2D g) { - _document = g._document; - _backgroundColor = g._backgroundColor; - _clip = g._clip; - _clipTransform = (AffineTransform) g._clipTransform.clone(); - _transform = (AffineTransform) g._transform.clone(); - _color = g._color; - _paint = g._paint; - _composite = g._composite; - _font = g._font; - _stroke = g._stroke; - _accurateTextMode = g._accurateTextMode; - } - - - /** - * This method is called to indicate that a particular method is not - * supported yet. The stack trace is printed to the standard output. - */ - private void methodNotSupported() { - EpsException e = new EpsException("Method not currently supported by EpsGraphics2D version " + VERSION); - e.printStackTrace(System.err); - } - - - /////////////// Specialist methods /////////////////////// - - - /** - * Sets whether to use accurate text mode when rendering text in EPS. - * This is enabled (true) by default. When accurate text mode is used, - * all text will be rendered in EPS to appear exactly the same as it - * would do when drawn with a Graphics2D context. With accurate text - * mode enabled, it is not necessary for the EPS viewer to have the - * required font installed. - *
- * Turning off accurate text mode will require the EPS viewer to have
- * the necessary fonts installed. If you are using a lot of text, you
- * will find that this significantly reduces the file size of your EPS
- * documents. AffineTransforms can only affect the starting point of
- * text using this simpler text mode - all text will be horizontal.
- */
- public void setAccurateTextMode(boolean b) {
- _accurateTextMode = b;
- }
-
-
- /**
- * Returns whether accurate text mode is being used.
- */
- public boolean getAccurateTextMode() {
- return _accurateTextMode;
- }
-
-
- /**
- * Flushes the buffered contents of this EPS document to the underlying
- * OutputStream it is being written to.
- */
- public void flush() throws IOException {
- _document.flush();
- }
-
-
- /**
- * Closes the EPS file being output to the underlying OutputStream.
- * The OutputStream is automatically flushed before being closed.
- * If you forget to do this, the file may be incomplete.
- */
- public void close() throws IOException {
- flush();
- _document.close();
- }
-
-
- /**
- * Appends a line to the EpsDocument.
- */
- private void append(String line) {
- _document.append(this, line);
- }
-
-
- /**
- * Returns the point after it has been transformed by the transformation.
- */
- private Point2D transform(float x, float y) {
- Point2D result = new Point2D.Float(x, y);
- result = _transform.transform(result, result);
- result.setLocation(result.getX(), -result.getY());
- return result;
- }
-
-
- /**
- * Appends the commands required to draw a shape on the EPS document.
- */
- private void draw(Shape s, String action) {
-
- if (s != null) {
-
- //Rectangle2D userBounds = s.getBounds2D();
- if (!_transform.isIdentity()) {
- s = _transform.createTransformedShape(s);
- }
-
- // Update the bounds.
- if (!action.equals("clip")) {
- Rectangle2D shapeBounds = s.getBounds2D();
- Rectangle2D visibleBounds = shapeBounds;
- if (_clip != null) {
- Rectangle2D clipBounds = _clip.getBounds2D();
- visibleBounds = shapeBounds.createIntersection(clipBounds);
- }
- float lineRadius = _stroke.getLineWidth() / 2;
- float minX = (float) visibleBounds.getMinX() - lineRadius;
- float minY = (float) visibleBounds.getMinY() - lineRadius;
- float maxX = (float) visibleBounds.getMaxX() + lineRadius;
- float maxY = (float) visibleBounds.getMaxY() + lineRadius;
- _document.updateBounds(minX, -minY);
- _document.updateBounds(maxX, -maxY);
- }
-
- append("newpath");
- int type = 0;
- float[] coords = new float[6];
- PathIterator it = s.getPathIterator(null);
- float x0 = 0;
- float y0 = 0;
- int count = 0;
- while (!it.isDone()) {
- type = it.currentSegment(coords);
- float x1 = coords[0];
- float y1 = -coords[1];
- float x2 = coords[2];
- float y2 = -coords[3];
- float x3 = coords[4];
- float y3 = -coords[5];
-
- if (type == PathIterator.SEG_CLOSE) {
- append("closepath");
- count++;
- }
- else if (type == PathIterator.SEG_CUBICTO) {
- append(x1 + " " + y1 + " " + x2 + " " + y2 + " " + x3 + " " + y3 + " curveto");
- count++;
- x0 = x3;
- y0 = y3;
- }
- else if (type == PathIterator.SEG_LINETO) {
- append(x1 + " " + y1 + " lineto");
- count++;
- x0 = x1;
- y0 = y1;
- }
- else if (type == PathIterator.SEG_MOVETO) {
- append(x1 + " " + y1 + " moveto");
- count++;
- x0 = x1;
- y0 = y1;
- }
- else if (type == PathIterator.SEG_QUADTO) {
- // Convert the quad curve into a cubic.
- float _x1 = x0 + 2 / 3f * (x1 - x0);
- float _y1 = y0 + 2 / 3f * (y1 - y0);
- float _x2 = x1 + 1 / 3f * (x2 - x1);
- float _y2 = y1 + 1 / 3f * (y2 - y1);
- float _x3 = x2;
- float _y3 = y2;
- append(_x1 + " " + _y1 + " " + _x2 + " " + _y2 + " " + _x3 + " " + _y3 + " curveto");
- count++;
- x0 = _x3;
- y0 = _y3;
- }
- else if (type == PathIterator.WIND_EVEN_ODD) {
- // Ignore.
- }
- else if (type == PathIterator.WIND_NON_ZERO) {
- // Ignore.
- }
- it.next();
- }
- append(action);
- append("newpath");
- }
- }
-
-
- /**
- * Returns a hex string that always contains two characters.
- */
- private String toHexString(int n) {
- String result = Integer.toString(n, 16);
- while (result.length() < 2) {
- result = "0" + result;
- }
- return result;
- }
-
-
- /////////////// Graphics2D methods ///////////////////////
-
-
- /**
- * Draws a 3D rectangle outline. If it is raised, light appears to come
- * from the top left.
- */
- public void draw3DRect(int x, int y, int width, int height, boolean raised) {
- Color originalColor = getColor();
- Stroke originalStroke = getStroke();
-
- setStroke(new BasicStroke(1.0f));
-
- if (raised) {
- setColor(originalColor.brighter());
- }
- else {
- setColor(originalColor.darker());
- }
-
- drawLine(x, y, x + width, y);
- drawLine(x, y, x, y + height);
-
- if (raised) {
- setColor(originalColor.darker());
- }
- else {
- setColor(originalColor.brighter());
- }
-
- drawLine(x + width, y + height, x, y + height);
- drawLine(x + width, y + height, x + width, y);
-
- setColor(originalColor);
- setStroke(originalStroke);
- }
-
-
- /**
- * Fills a 3D rectangle. If raised, it has bright fill and light appears
- * to come from the top left.
- */
- public void fill3DRect(int x, int y, int width, int height, boolean raised) {
- Color originalColor = getColor();
-
- if (raised) {
- setColor(originalColor.brighter());
- }
- else {
- setColor(originalColor.darker());
- }
- draw(new Rectangle(x, y, width, height), "fill");
- setColor(originalColor);
- draw3DRect(x, y, width, height, raised);
- }
-
-
- /**
- * Draws a Shape on the EPS document.
- */
- public void draw(Shape s) {
- draw(s, "stroke");
- }
-
-
- /**
- * Draws an Image on the EPS document.
- */
- public boolean drawImage(Image img, AffineTransform xform, ImageObserver obs) {
- AffineTransform at = getTransform();
- transform(xform);
- boolean st = drawImage(img, 0, 0, obs);
- setTransform(at);
- return st;
- }
-
-
- /**
- * Draws a BufferedImage on the EPS document.
- */
- public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) {
- BufferedImage img1 = op.filter(img, null);
- drawImage(img1, new AffineTransform(1f, 0f, 0f, 1f, x, y), null);
- }
-
-
- /**
- * Draws a RenderedImage on the EPS document.
- */
- public void drawRenderedImage(RenderedImage img, AffineTransform xform) {
- Hashtable properties = new Hashtable();
- String[] names = img.getPropertyNames();
- for (int i = 0; i < names.length; i++) {
- properties.put(names[i], img.getProperty(names[i]));
- }
-
- ColorModel cm = img.getColorModel();
- WritableRaster wr = img.copyData(null);
- BufferedImage img1 = new BufferedImage(cm, wr, cm.isAlphaPremultiplied(), properties);
- AffineTransform at = AffineTransform.getTranslateInstance(img.getMinX(), img.getMinY());
- at.preConcatenate(xform);
- drawImage(img1, at, null);
- }
-
-
- /**
- * Draws a RenderableImage by invoking its createDefaultRendering method.
- */
- public void drawRenderableImage(RenderableImage img, AffineTransform xform) {
- drawRenderedImage(img.createDefaultRendering(), xform);
- }
-
-
- /**
- * Draws a string at (x,y)
- */
- public void drawString(String str, int x, int y) {
- drawString(str, (float) x, (float) y);
- }
-
-
- /**
- * Draws a string at (x,y)
- */
- public void drawString(String s, float x, float y) {
- if (s != null && s.length() > 0) {
- AttributedString as = new AttributedString(s);
- as.addAttribute(TextAttribute.FONT, getFont());
- drawString(as.getIterator(), x, y);
- }
- }
-
-
- /**
- * Draws the characters of an AttributedCharacterIterator, starting from
- * (x,y).
- */
- public void drawString(AttributedCharacterIterator iterator, int x, int y) {
- drawString(iterator, (float) x, (float) y);
- }
-
-
- /**
- * Draws the characters of an AttributedCharacterIterator, starting from
- * (x,y).
- */
- public void drawString(AttributedCharacterIterator iterator, float x, float y) {
- if (getAccurateTextMode()) {
- TextLayout layout = new TextLayout(iterator, getFontRenderContext());
- Shape shape = layout.getOutline(AffineTransform.getTranslateInstance(x, y));
- draw(shape, "fill");
- }
- else {
- append("newpath");
- Point2D location = transform(x, y);
- append(location.getX() + " " + location.getY() + " moveto");
- StringBuffer buffer = new StringBuffer();
- for (char ch = iterator.first(); ch != CharacterIterator.DONE; ch = iterator.next()) {
- if (ch == '(' || ch == ')') {
- buffer.append('\\');
- }
- buffer.append(ch);
- }
- append("(" + buffer.toString() + ") show");
- }
- }
-
-
- /**
- * Draws a GlyphVector at (x,y)
- */
- public void drawGlyphVector(GlyphVector g, float x, float y) {
- Shape shape = g.getOutline(x, y);
- draw(shape, "fill");
- }
-
-
- /**
- * Fills a Shape on the EPS document.
- */
- public void fill(Shape s) {
- draw(s, "fill");
- }
-
-
- /**
- * Checks whether or not the specified Shape intersects the specified
- * Rectangle, which is in device space.
- */
- public boolean hit(Rectangle rect, Shape s, boolean onStroke) {
- return s.intersects(rect);
- }
-
-
- /**
- * Returns the device configuration associated with this EpsGraphics2D
- * object.
- */
- public GraphicsConfiguration getDeviceConfiguration() {
- GraphicsConfiguration gc = null;
- GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
- GraphicsDevice[] gds = ge.getScreenDevices();
- for (int i = 0; i < gds.length; i++) {
- GraphicsDevice gd = gds[i];
- GraphicsConfiguration[] gcs = gd.getConfigurations();
- if (gcs.length > 0) {
- return gcs[0];
- }
- }
- return gc;
- }
-
-
- /**
- * Sets the Composite to be used by this EpsGraphics2D. EpsGraphics2D
- * does not make use of these.
- */
- public void setComposite(Composite comp) {
- _composite = comp;
- }
-
-
- /**
- * Sets the Paint attribute for the EpsGraphics2D object. Only Paint
- * objects of type Color are respected by EpsGraphics2D.
- */
- public void setPaint(Paint paint) {
- _paint = paint;
- if (paint instanceof Color) {
- setColor((Color) paint);
- }
- }
-
-
- /**
- * Sets the stroke. Only accepts BasicStroke objects (or subclasses of
- * BasicStroke).
- */
- public void setStroke(Stroke s) {
- if (s instanceof BasicStroke) {
- _stroke = (BasicStroke) s;
-
- append(_stroke.getLineWidth() + " setlinewidth");
- float miterLimit = _stroke.getMiterLimit();
- if (miterLimit < 1.0f) {
- miterLimit = 1;
- }
- append(miterLimit + " setmiterlimit");
- append(_stroke.getLineJoin() + " setlinejoin");
- append(_stroke.getEndCap() + " setlinecap");
-
- StringBuffer dashes = new StringBuffer();
- dashes.append("[ ");
- float[] dashArray = _stroke.getDashArray();
- if (dashArray != null) {
- for (int i = 0; i < dashArray.length; i++) {
- dashes.append((dashArray[i]) + " ");
- }
- }
- dashes.append("]");
- append(dashes.toString() + " 0 setdash");
- }
- }
-
-
- /**
- * Sets a rendering hint. These are not used by EpsGraphics2D.
- */
- public void setRenderingHint(RenderingHints.Key hintKey, Object hintValue) {
- // Do nothing.
- }
-
-
- /**
- * Returns the value of a single preference for the rendering
- * algorithms. Rendering hints are not used by EpsGraphics2D.
- */
- public Object getRenderingHint(RenderingHints.Key hintKey) {
- return null;
- }
-
-
- /**
- * Sets the rendering hints. These are ignored by EpsGraphics2D.
- */
- public void setRenderingHints(Map hints) {
- // Do nothing.
- }
-
-
- /**
- * Adds rendering hints. These are ignored by EpsGraphics2D.
- */
- public void addRenderingHints(Map hints) {
- // Do nothing.
- }
-
-
- /**
- * Returns the preferences for the rendering algorithms.
- */
- public RenderingHints getRenderingHints() {
- return new RenderingHints(null);
- }
-
-
- /**
- * Translates the origin of the EpsGraphics2D context to the point (x,y)
- * in the current coordinate system.
- */
- public void translate(int x, int y) {
- translate((double) x, (double) y);
- }
-
-
- /**
- * Concatenates the current EpsGraphics2D Transformation with a
- * translation transform.
- */
- public void translate(double tx, double ty) {
- transform(AffineTransform.getTranslateInstance(tx, ty));
- }
-
-
- /**
- * Concatenates the current EpsGraphics2D Transform with a rotation
- * transform.
- */
- public void rotate(double theta) {
- rotate(theta, 0, 0);
- }
-
-
- /**
- * Concatenates the current EpsGraphics2D Transform with a translated
- * rotation transform.
- */
- public void rotate(double theta, double x, double y) {
- transform(AffineTransform.getRotateInstance(theta, x, y));
- }
-
-
- /**
- * Concatenates the current EpsGraphics2D Transform with a scaling
- * transformation.
- */
- public void scale(double sx, double sy) {
- transform(AffineTransform.getScaleInstance(sx, sy));
- }
-
-
- /**
- * Concatenates the current EpsGraphics2D Transform with a shearing
- * transform.
- */
- public void shear(double shx, double shy) {
- transform(AffineTransform.getShearInstance(shx, shy));
- }
-
-
- /**
- * Composes an AffineTransform object with the Transform in this
- * EpsGraphics2D according to the rule last-specified-first-applied.
- */
- public void transform(AffineTransform Tx) {
- _transform.concatenate(Tx);
- setTransform(getTransform());
- }
-
-
- /**
- * Sets the AffineTransform to be used by this EpsGraphics2D.
- */
- public void setTransform(AffineTransform Tx) {
- if (Tx == null) {
- _transform = new AffineTransform();
- }
- else {
- _transform = new AffineTransform(Tx);
- }
- // Need to update the stroke and font so they know the scale changed
- setStroke(getStroke());
- setFont(getFont());
- }
-
-
- /**
- * Gets the AffineTransform used by this EpsGraphics2D.
- */
- public AffineTransform getTransform() {
- return new AffineTransform(_transform);
- }
-
-
- /**
- * Returns the current Paint of the EpsGraphics2D object.
- */
- public Paint getPaint() {
- return _paint;
- }
-
-
- /**
- * returns the current Composite of the EpsGraphics2D object.
- */
- public Composite getComposite() {
- return _composite;
- }
-
-
- /**
- * Sets the background color to be used by the clearRect method.
- */
- public void setBackground(Color color) {
- if (color == null) {
- color = Color.black;
- }
- _backgroundColor = color;
- }
-
-
- /**
- * Gets the background color that is used by the clearRect method.
- */
- public Color getBackground() {
- return _backgroundColor;
- }
-
-
- /**
- * Returns the Stroke currently used. Guaranteed to be an instance of
- * BasicStroke.
- */
- public Stroke getStroke() {
- return _stroke;
- }
-
-
- /**
- * Intersects the current clip with the interior of the specified Shape
- * and sets the clip to the resulting intersection.
- */
- public void clip(Shape s) {
- if (_clip == null) {
- setClip(s);
- }
- else {
- Area area = new Area(_clip);
- area.intersect(new Area(s));
- setClip(area);
- }
- }
-
-
- /**
- * Returns the FontRenderContext.
- */
- public FontRenderContext getFontRenderContext() {
- return _fontRenderContext;
- }
-
-
- /////////////// Graphics methods ///////////////////////
-
-
- /**
- * Returns a new Graphics object that is identical to this EpsGraphics2D.
- */
- public Graphics create() {
- return new EpsGraphics2D(this);
- }
-
-
- /**
- * Returns an EpsGraphics2D object based on this
- * Graphics object, but with a new translation and clip
- * area.
- */
- public Graphics create(int x, int y, int width, int height) {
- Graphics g = create();
- g.translate(x, y);
- g.clipRect(0, 0, width, height);
- return g;
- }
-
-
- /**
- * Returns the current Color. This will be a default value (black)
- * until it is changed using the setColor method.
- */
- public Color getColor() {
- return _color;
- }
-
-
- /**
- * Sets the Color to be used when drawing all future shapes, text, etc.
- */
- public void setColor(Color c) {
- if (c == null) {
- c = Color.black;
- }
- _color = c;
- append((c.getRed() / 255f) + " " + (c.getGreen() / 255f) + " " + (c.getBlue() / 255f) + " setrgbcolor");
- }
-
-
- /**
- * Sets the paint mode of this EpsGraphics2D object to overwrite the
- * destination EpsDocument with the current color.
- */
- public void setPaintMode() {
- // Do nothing - paint mode is the only method supported anyway.
- }
-
-
- /**
- * Not implemented - performs no action.
- */
- public void setXORMode(Color c1) {
- methodNotSupported();
- }
-
-
- /**
- * Returns the Font currently being used.
- */
- public Font getFont() {
- return _font;
- }
-
-
- /**
- * Sets the Font to be used in future text.
- */
- public void setFont(Font font) {
- if (font == null) {
- font = Font.decode(null);
- }
- _font = font;
- append("/" + _font.getPSName() + " findfont " + ((int) _font.getSize()) + " scalefont setfont");
- }
-
-
- /**
- * Gets the font metrics of the current font.
- */
- public FontMetrics getFontMetrics() {
- return getFontMetrics(getFont());
- }
-
-
- /**
- * Gets the font metrics for the specified font.
- */
- public FontMetrics getFontMetrics(Font f) {
- BufferedImage image = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
- Graphics g = image.getGraphics();
- return g.getFontMetrics(f);
- }
-
-
- /**
- * Returns the bounding rectangle of the current clipping area.
- */
- public Rectangle getClipBounds() {
- if (_clip == null) {
- return null;
- }
- Rectangle rect = getClip().getBounds();
- return rect;
- }
-
-
- /**
- * Intersects the current clip with the specified rectangle.
- */
- public void clipRect(int x, int y, int width, int height) {
- clip(new Rectangle(x, y, width, height));
- }
-
-
- /**
- * Sets the current clip to the rectangle specified by the given
- * coordinates.
- */
- public void setClip(int x, int y, int width, int height) {
- setClip(new Rectangle(x, y, width, height));
- }
-
-
- /**
- * Gets the current clipping area.
- */
- public Shape getClip() {
- if (_clip == null) {
- return null;
- }
- else {
- try {
- AffineTransform t = _transform.createInverse();
- t.concatenate(_clipTransform);
- return t.createTransformedShape(_clip);
- }
- catch (Exception e) {
- throw new EpsException("Unable to get inverse of matrix: " + _transform);
- }
- }
- }
-
-
- /**
- * Sets the current clipping area to an arbitrary clip shape.
- */
- public void setClip(Shape clip) {
- if (clip != null) {
- if (_document.isClipSet()) {
- append("grestore");
- append("gsave");
- }
- else {
- _document.setClipSet(true);
- append("gsave");
- }
- draw(clip, "clip");
- _clip = clip;
- _clipTransform = (AffineTransform) _transform.clone();
- }
- else {
- if (_document.isClipSet()) {
- append("grestore");
- _document.setClipSet(false);
- }
- _clip = null;
- }
- }
-
-
- /**
- * Not implemented - performs no action.
- */
- public void copyArea(int x, int y, int width, int height, int dx, int dy) {
- methodNotSupported();
- }
-
-
- /**
- * Draws a straight line from (x1,y1) to (x2,y2).
- */
- public void drawLine(int x1, int y1, int x2, int y2) {
- Shape shape = new Line2D.Float(x1, y1, x2, y2);
- draw(shape);
- }
-
-
- /**
- * Fills a rectangle with top-left corner placed at (x,y).
- */
- public void fillRect(int x, int y, int width, int height) {
- Shape shape = new Rectangle(x, y, width, height);
- draw(shape, "fill");
- }
-
-
- /**
- * Draws a rectangle with top-left corner placed at (x,y).
- */
- public void drawRect(int x, int y, int width, int height) {
- Shape shape = new Rectangle(x, y, width, height);
- draw(shape);
- }
-
-
- /**
- * Clears a rectangle with top-left corner placed at (x,y) using the
- * current background color.
- */
- public void clearRect(int x, int y, int width, int height) {
- Color originalColor = getColor();
-
- setColor(getBackground());
- Shape shape = new Rectangle(x, y, width, height);
- draw(shape, "fill");
-
- setColor(originalColor);
- }
-
-
- /**
- * Draws a rounded rectangle.
- */
- public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) {
- Shape shape = new RoundRectangle2D.Float(x, y, width, height, arcWidth, arcHeight);
- draw(shape);
- }
-
-
- /**
- * Fills a rounded rectangle.
- */
- public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) {
- Shape shape = new RoundRectangle2D.Float(x, y, width, height, arcWidth, arcHeight);
- draw(shape, "fill");
- }
-
-
- /**
- * Draws an oval.
- */
- public void drawOval(int x, int y, int width, int height) {
- Shape shape = new Ellipse2D.Float(x, y, width, height);
- draw(shape);
- }
-
-
- /**
- * Fills an oval.
- */
- public void fillOval(int x, int y, int width, int height) {
- Shape shape = new Ellipse2D.Float(x, y, width, height);
- draw(shape, "fill");
- }
-
-
- /**
- * Draws an arc.
- */
- public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
- Shape shape = new Arc2D.Float(x, y, width, height, startAngle, arcAngle, Arc2D.OPEN);
- draw(shape);
- }
-
-
- /**
- * Fills an arc.
- */
- public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) {
- Shape shape = new Arc2D.Float(x, y, width, height, startAngle, arcAngle, Arc2D.PIE);
- draw(shape, "fill");
- }
-
-
- /**
- * Draws a polyline.
- */
- public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints) {
- if (nPoints > 0) {
- GeneralPath path = new GeneralPath();
- path.moveTo(xPoints[0], yPoints[0]);
- for (int i = 1; i < nPoints; i++) {
- path.lineTo(xPoints[i], yPoints[i]);
- }
- draw(path);
- }
- }
-
-
- /**
- * Draws a polygon made with the specified points.
- */
- public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints) {
- Shape shape = new Polygon(xPoints, yPoints, nPoints);
- draw(shape);
- }
-
-
- /**
- * Draws a polygon.
- */
- public void drawPolygon(Polygon p) {
- draw(p);
- }
-
-
- /**
- * Fills a polygon made with the specified points.
- */
- public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints) {
- Shape shape = new Polygon(xPoints, yPoints, nPoints);
- draw(shape, "fill");
- }
-
-
- /**
- * Fills a polygon.
- */
- public void fillPolygon(Polygon p) {
- draw(p, "fill");
- }
-
-
- /**
- * Draws the specified characters, starting from (x,y)
- */
- public void drawChars(char[] data, int offset, int length, int x, int y) {
- String string = new String(data, offset, length);
- drawString(string, x, y);
- }
-
-
- /**
- * Draws the specified bytes, starting from (x,y)
- */
- public void drawBytes(byte[] data, int offset, int length, int x, int y) {
- String string = new String(data, offset, length);
- drawString(string, x, y);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int x, int y, ImageObserver observer) {
- return drawImage(img, x, y, Color.white, observer);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer) {
- return drawImage(img, x, y, width, height, Color.white, observer);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer) {
- int width = img.getWidth(null);
- int height = img.getHeight(null);
- return drawImage(img, x, y, width, height, bgcolor, observer);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer) {
- return drawImage(img, x, y, x + width, y + height, 0, 0, width, height, bgcolor, observer);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer) {
- return drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, Color.white, observer);
- }
-
-
- /**
- * Draws an image.
- */
- public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer) {
- if (dx1 >= dx2) {
- throw new IllegalArgumentException("dx1 >= dx2");
- }
- if (sx1 >= sx2) {
- throw new IllegalArgumentException("sx1 >= sx2");
- }
- if (dy1 >= dy2) {
- throw new IllegalArgumentException("dy1 >= dy2");
- }
- if (sy1 >= sy2) {
- throw new IllegalArgumentException("sy1 >= sy2");
- }
-
- append("gsave");
-
- int width = sx2 - sx1;
- int height = sy2 - sy1;
- int destWidth = dx2 - dx1;
- int destHeight = dy2 - dy1;
-
- int[] pixels = new int[width * height];
- PixelGrabber pg = new PixelGrabber(img, sx1, sy1, sx2 - sx1, sy2 - sy1, pixels, 0, width);
- try {
- pg.grabPixels();
- }
- catch(InterruptedException e) {
- return false;
- }
-
- AffineTransform matrix = new AffineTransform(_transform);
- matrix.translate(dx1, dy1);
- matrix.scale(destWidth / (double) width, destHeight / (double) height);
- double[] m = new double[6];
- try {
- matrix = matrix.createInverse();
- }
- catch (Exception e) {
- throw new EpsException("Unable to get inverse of matrix: " + matrix);
- }
- matrix.scale(1, -1);
- matrix.getMatrix(m);
- append(width + " " + height + " 8 [" + m[0] + " " + m[1] + " " + m[2] + " " + m[3] + " " + m[4] + " " + m[5] + "]");
- // Fill the background to update the bounding box.
- Color oldColor = getColor();
- setColor(getBackground());
- fillRect(dx1, dy1, destWidth, destHeight);
- setColor(oldColor);
- append("{currentfile 3 " + width + " mul string readhexstring pop} bind");
- append("false 3 colorimage");
- StringBuffer line = new StringBuffer();
- for (int y = 0; y < height; y++) {
- for (int x = 0; x < width; x++) {
- Color color = new Color(pixels[x + width * y]);
- line.append(toHexString(color.getRed()) + toHexString(color.getGreen()) + toHexString(color.getBlue()));
- if (line.length() > 64) {
- append(line.toString());
- line = new StringBuffer();
- }
- }
- }
- if (line.length() > 0) {
- append(line.toString());
- }
-
- append("grestore");
-
- return true;
- }
-
-
- /**
- * Disposes of all resources used by this EpsGraphics2D object.
- * If this is the only remaining EpsGraphics2D instance pointing at
- * a EpsDocument object, then the EpsDocument object shall become
- * eligible for garbage collection.
- */
- public void dispose() {
- _document = null;
- }
-
-
- /**
- * Finalizes the object.
- */
- public void finalize() {
- super.finalize();
- }
-
-
- /**
- * Returns the entire contents of the EPS document, complete with
- * headers and bounding box. The returned String is suitable for
- * being written directly to disk as an EPS file.
- */
- public String toString() {
- StringWriter writer = new StringWriter();
- try {
- _document.write(writer);
- _document.flush();
- _document.close();
- }
- catch (IOException e) {
- throw new EpsException(e.toString());
- }
- return writer.toString();
- }
-
-
- /**
- * Returns true if the specified rectangular area might intersect the
- * current clipping area.
- */
- public boolean hitClip(int x, int y, int width, int height) {
- if (_clip == null) {
- return true;
- }
- Rectangle rect = new Rectangle(x, y, width, height);
- return hit(rect, _clip, true);
- }
-
-
- /**
- * Returns the bounding rectangle of the current clipping area.
- */
- public Rectangle getClipBounds(Rectangle r) {
- if (_clip == null) {
- return r;
- }
- Rectangle rect = getClipBounds();
- r.setLocation((int) rect.getX(), (int) rect.getY());
- r.setSize((int) rect.getWidth(), (int) rect.getHeight());
- return r;
- }
-
-
- private Color _color;
- private Color _backgroundColor;
- private Paint _paint;
- private Composite _composite;
- private BasicStroke _stroke;
- private Font _font;
- private Shape _clip;
- private AffineTransform _clipTransform;
- private AffineTransform _transform;
- private boolean _accurateTextMode;
-
- private EpsDocument _document;
-
- private static FontRenderContext _fontRenderContext = new FontRenderContext(null, false, true);
-}
\ No newline at end of file
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.2b1)
+ * Copyright (C) 2014 The Jalview Authors
+ *
+ * This file is part of Jalview.
+ *
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * Jalview is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview. If not, see
+ * Many Java programs use Graphics2D to draw stuff on the screen, and while it + * is easy to save the output as a png or jpeg file, it is a little harder to + * export it as an EPS for including in a document or paper. + *
+ * This class makes the whole process extremely easy, because you can use it as + * if it's a Graphics2D object. The only difference is that all of the + * implemented methods create EPS output, which means the diagrams you draw can + * be resized without leading to any of the jagged edges you may see when + * resizing pixel-based images, such as jpeg and png files. + *
+ * Example usage: + *
+ * + *
+ * Graphics2D g = new EpsGraphics2D(); + * g.setColor(Color.black); + * + * // Line thickness 2. + * g.setStroke(new BasicStroke(2.0f)); + * + * // Draw a line. + * g.drawLine(10, 10, 50, 10); + * + * // Fill a rectangle in blue + * g.setColor(Color.blue); + * g.fillRect(10, 0, 20, 20); + * + * // Get the EPS output. + * String output = g.toString(); + *+ * + *
+ * You do not need to worry about the size of the canvas when drawing on a + * EpsGraphics2D object. The bounding box of the EPS document will automatically + * resize to accomodate new items that you draw. + *
+ * Not all methods are implemented yet. Those that are not are clearly labelled. + *
+ * Copyright Paul Mutton, http://www.jibble.org/ + * + */ +public class EpsGraphics2D extends java.awt.Graphics2D +{ + + public static final String VERSION = "0.8.8"; + + /** + * Constructs a new EPS document that is initially empty and can be drawn on + * like a Graphics2D object. The EPS document is stored in memory. + */ + public EpsGraphics2D() + { + this("Untitled"); + } + + /** + * Constructs a new EPS document that is initially empty and can be drawn on + * like a Graphics2D object. The EPS document is stored in memory. + */ + public EpsGraphics2D(String title) + { + _document = new EpsDocument(title); + _backgroundColor = Color.white; + _clip = null; + _transform = new AffineTransform(); + _clipTransform = new AffineTransform(); + _accurateTextMode = true; + setColor(Color.black); + setPaint(Color.black); + setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR)); + setFont(Font.decode(null)); + setStroke(new BasicStroke()); + } + + /** + * Constructs a new EPS document that is initially empty and can be drawn on + * like a Graphics2D object. The EPS document is written to the file as it + * goes, which reduces memory usage. The bounding box of the document is fixed + * and specified at construction time by minX,minY,maxX,maxY. The file is + * flushed and closed when the close() method is called. + */ + public EpsGraphics2D(String title, File file, int minX, int minY, + int maxX, int maxY) throws IOException + { + this(title, new FileOutputStream(file), minX, minY, maxX, maxY); + } + + /** + * Constructs a new EPS document that is initially empty and can be drawn on + * like a Graphics2D object. The EPS document is written to the output stream + * as it goes, which reduces memory usage. The bounding box of the document is + * fixed and specified at construction time by minX,minY,maxX,maxY. The output + * stream is flushed and closed when the close() method is called. + */ + public EpsGraphics2D(String title, OutputStream outputStream, int minX, + int minY, int maxX, int maxY) throws IOException + { + this(title); + _document = new EpsDocument(title, outputStream, minX, minY, maxX, maxY); + } + + /** + * Constructs a new EpsGraphics2D instance that is a copy of the supplied + * argument and points at the same EpsDocument. + */ + protected EpsGraphics2D(EpsGraphics2D g) + { + _document = g._document; + _backgroundColor = g._backgroundColor; + _clip = g._clip; + _clipTransform = (AffineTransform) g._clipTransform.clone(); + _transform = (AffineTransform) g._transform.clone(); + _color = g._color; + _paint = g._paint; + _composite = g._composite; + _font = g._font; + _stroke = g._stroke; + _accurateTextMode = g._accurateTextMode; + } + + /** + * This method is called to indicate that a particular method is not supported + * yet. The stack trace is printed to the standard output. + */ + private void methodNotSupported() + { + EpsException e = new EpsException(MessageManager.formatMessage("exception.eps_method_not_supported", new String[]{VERSION})); + e.printStackTrace(System.err); + } + + // ///////////// Specialist methods /////////////////////// + + /** + * Sets whether to use accurate text mode when rendering text in EPS. This is + * enabled (true) by default. When accurate text mode is used, all text will + * be rendered in EPS to appear exactly the same as it would do when drawn + * with a Graphics2D context. With accurate text mode enabled, it is not + * necessary for the EPS viewer to have the required font installed. + *
+ * Turning off accurate text mode will require the EPS viewer to have the + * necessary fonts installed. If you are using a lot of text, you will find + * that this significantly reduces the file size of your EPS documents. + * AffineTransforms can only affect the starting point of text using this + * simpler text mode - all text will be horizontal. + */ + public void setAccurateTextMode(boolean b) + { + _accurateTextMode = b; + } + + /** + * Returns whether accurate text mode is being used. + */ + public boolean getAccurateTextMode() + { + return _accurateTextMode; + } + + /** + * Flushes the buffered contents of this EPS document to the underlying + * OutputStream it is being written to. + */ + public void flush() throws IOException + { + _document.flush(); + } + + /** + * Closes the EPS file being output to the underlying OutputStream. The + * OutputStream is automatically flushed before being closed. If you forget to + * do this, the file may be incomplete. + */ + public void close() throws IOException + { + flush(); + _document.close(); + } + + /** + * Appends a line to the EpsDocument. + */ + private void append(String line) + { + _document.append(this, line); + } + + /** + * Returns the point after it has been transformed by the transformation. + */ + private Point2D transform(float x, float y) + { + Point2D result = new Point2D.Float(x, y); + result = _transform.transform(result, result); + result.setLocation(result.getX(), -result.getY()); + return result; + } + + /** + * Appends the commands required to draw a shape on the EPS document. + */ + private void draw(Shape s, String action) + { + + if (s != null) + { + + // Rectangle2D userBounds = s.getBounds2D(); + if (!_transform.isIdentity()) + { + s = _transform.createTransformedShape(s); + } + + // Update the bounds. + if (!action.equals("clip")) + { + Rectangle2D shapeBounds = s.getBounds2D(); + Rectangle2D visibleBounds = shapeBounds; + if (_clip != null) + { + Rectangle2D clipBounds = _clip.getBounds2D(); + visibleBounds = shapeBounds.createIntersection(clipBounds); + } + float lineRadius = _stroke.getLineWidth() / 2; + float minX = (float) visibleBounds.getMinX() - lineRadius; + float minY = (float) visibleBounds.getMinY() - lineRadius; + float maxX = (float) visibleBounds.getMaxX() + lineRadius; + float maxY = (float) visibleBounds.getMaxY() + lineRadius; + _document.updateBounds(minX, -minY); + _document.updateBounds(maxX, -maxY); + } + + append("newpath"); + int type = 0; + float[] coords = new float[6]; + PathIterator it = s.getPathIterator(null); + float x0 = 0; + float y0 = 0; + int count = 0; + while (!it.isDone()) + { + type = it.currentSegment(coords); + float x1 = coords[0]; + float y1 = -coords[1]; + float x2 = coords[2]; + float y2 = -coords[3]; + float x3 = coords[4]; + float y3 = -coords[5]; + + if (type == PathIterator.SEG_CLOSE) + { + append("closepath"); + count++; + } + else if (type == PathIterator.SEG_CUBICTO) + { + append(x1 + " " + y1 + " " + x2 + " " + y2 + " " + x3 + " " + y3 + + " curveto"); + count++; + x0 = x3; + y0 = y3; + } + else if (type == PathIterator.SEG_LINETO) + { + append(x1 + " " + y1 + " lineto"); + count++; + x0 = x1; + y0 = y1; + } + else if (type == PathIterator.SEG_MOVETO) + { + append(x1 + " " + y1 + " moveto"); + count++; + x0 = x1; + y0 = y1; + } + else if (type == PathIterator.SEG_QUADTO) + { + // Convert the quad curve into a cubic. + float _x1 = x0 + 2 / 3f * (x1 - x0); + float _y1 = y0 + 2 / 3f * (y1 - y0); + float _x2 = x1 + 1 / 3f * (x2 - x1); + float _y2 = y1 + 1 / 3f * (y2 - y1); + float _x3 = x2; + float _y3 = y2; + append(_x1 + " " + _y1 + " " + _x2 + " " + _y2 + " " + _x3 + " " + + _y3 + " curveto"); + count++; + x0 = _x3; + y0 = _y3; + } + else if (type == PathIterator.WIND_EVEN_ODD) + { + // Ignore. + } + else if (type == PathIterator.WIND_NON_ZERO) + { + // Ignore. + } + it.next(); + } + append(action); + append("newpath"); + } + } + + /** + * Returns a hex string that always contains two characters. + */ + private String toHexString(int n) + { + String result = Integer.toString(n, 16); + while (result.length() < 2) + { + result = "0" + result; + } + return result; + } + + // ///////////// Graphics2D methods /////////////////////// + + /** + * Draws a 3D rectangle outline. If it is raised, light appears to come from + * the top left. + */ + public void draw3DRect(int x, int y, int width, int height, boolean raised) + { + Color originalColor = getColor(); + Stroke originalStroke = getStroke(); + + setStroke(new BasicStroke(1.0f)); + + if (raised) + { + setColor(originalColor.brighter()); + } + else + { + setColor(originalColor.darker()); + } + + drawLine(x, y, x + width, y); + drawLine(x, y, x, y + height); + + if (raised) + { + setColor(originalColor.darker()); + } + else + { + setColor(originalColor.brighter()); + } + + drawLine(x + width, y + height, x, y + height); + drawLine(x + width, y + height, x + width, y); + + setColor(originalColor); + setStroke(originalStroke); + } + + /** + * Fills a 3D rectangle. If raised, it has bright fill and light appears to + * come from the top left. + */ + public void fill3DRect(int x, int y, int width, int height, boolean raised) + { + Color originalColor = getColor(); + + if (raised) + { + setColor(originalColor.brighter()); + } + else + { + setColor(originalColor.darker()); + } + draw(new Rectangle(x, y, width, height), "fill"); + setColor(originalColor); + draw3DRect(x, y, width, height, raised); + } + + /** + * Draws a Shape on the EPS document. + */ + public void draw(Shape s) + { + draw(s, "stroke"); + } + + /** + * Draws an Image on the EPS document. + */ + public boolean drawImage(Image img, AffineTransform xform, + ImageObserver obs) + { + AffineTransform at = getTransform(); + transform(xform); + boolean st = drawImage(img, 0, 0, obs); + setTransform(at); + return st; + } + + /** + * Draws a BufferedImage on the EPS document. + */ + public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) + { + BufferedImage img1 = op.filter(img, null); + drawImage(img1, new AffineTransform(1f, 0f, 0f, 1f, x, y), null); + } + + /** + * Draws a RenderedImage on the EPS document. + */ + public void drawRenderedImage(RenderedImage img, AffineTransform xform) + { + Hashtable properties = new Hashtable(); + String[] names = img.getPropertyNames(); + for (int i = 0; i < names.length; i++) + { + properties.put(names[i], img.getProperty(names[i])); + } + + ColorModel cm = img.getColorModel(); + WritableRaster wr = img.copyData(null); + BufferedImage img1 = new BufferedImage(cm, wr, cm + .isAlphaPremultiplied(), properties); + AffineTransform at = AffineTransform.getTranslateInstance( + img.getMinX(), img.getMinY()); + at.preConcatenate(xform); + drawImage(img1, at, null); + } + + /** + * Draws a RenderableImage by invoking its createDefaultRendering method. + */ + public void drawRenderableImage(RenderableImage img, AffineTransform xform) + { + drawRenderedImage(img.createDefaultRendering(), xform); + } + + /** + * Draws a string at (x,y) + */ + public void drawString(String str, int x, int y) + { + drawString(str, (float) x, (float) y); + } + + /** + * Draws a string at (x,y) + */ + public void drawString(String s, float x, float y) + { + if (s != null && s.length() > 0) + { + AttributedString as = new AttributedString(s); + as.addAttribute(TextAttribute.FONT, getFont()); + drawString(as.getIterator(), x, y); + } + } + + /** + * Draws the characters of an AttributedCharacterIterator, starting from + * (x,y). + */ + public void drawString(AttributedCharacterIterator iterator, int x, int y) + { + drawString(iterator, (float) x, (float) y); + } + + /** + * Draws the characters of an AttributedCharacterIterator, starting from + * (x,y). + */ + public void drawString(AttributedCharacterIterator iterator, float x, + float y) + { + if (getAccurateTextMode()) + { + TextLayout layout = new TextLayout(iterator, getFontRenderContext()); + Shape shape = layout.getOutline(AffineTransform.getTranslateInstance( + x, y)); + draw(shape, "fill"); + } + else + { + append("newpath"); + Point2D location = transform(x, y); + append(location.getX() + " " + location.getY() + " moveto"); + StringBuffer buffer = new StringBuffer(); + for (char ch = iterator.first(); ch != CharacterIterator.DONE; ch = iterator + .next()) + { + if (ch == '(' || ch == ')') + { + buffer.append('\\'); + } + buffer.append(ch); + } + append("(" + buffer.toString() + ") show"); + } + } + + /** + * Draws a GlyphVector at (x,y) + */ + public void drawGlyphVector(GlyphVector g, float x, float y) + { + Shape shape = g.getOutline(x, y); + draw(shape, "fill"); + } + + /** + * Fills a Shape on the EPS document. + */ + public void fill(Shape s) + { + draw(s, "fill"); + } + + /** + * Checks whether or not the specified Shape intersects the specified + * Rectangle, which is in device space. + */ + public boolean hit(Rectangle rect, Shape s, boolean onStroke) + { + return s.intersects(rect); + } + + /** + * Returns the device configuration associated with this EpsGraphics2D object. + */ + public GraphicsConfiguration getDeviceConfiguration() + { + GraphicsConfiguration gc = null; + GraphicsEnvironment ge = GraphicsEnvironment + .getLocalGraphicsEnvironment(); + GraphicsDevice[] gds = ge.getScreenDevices(); + for (int i = 0; i < gds.length; i++) + { + GraphicsDevice gd = gds[i]; + GraphicsConfiguration[] gcs = gd.getConfigurations(); + if (gcs.length > 0) + { + return gcs[0]; + } + } + return gc; + } + + /** + * Sets the Composite to be used by this EpsGraphics2D. EpsGraphics2D does not + * make use of these. + */ + public void setComposite(Composite comp) + { + _composite = comp; + } + + /** + * Sets the Paint attribute for the EpsGraphics2D object. Only Paint objects + * of type Color are respected by EpsGraphics2D. + */ + public void setPaint(Paint paint) + { + _paint = paint; + if (paint instanceof Color) + { + setColor((Color) paint); + } + } + + /** + * Sets the stroke. Only accepts BasicStroke objects (or subclasses of + * BasicStroke). + */ + public void setStroke(Stroke s) + { + if (s instanceof BasicStroke) + { + _stroke = (BasicStroke) s; + + append(_stroke.getLineWidth() + " setlinewidth"); + float miterLimit = _stroke.getMiterLimit(); + if (miterLimit < 1.0f) + { + miterLimit = 1; + } + append(miterLimit + " setmiterlimit"); + append(_stroke.getLineJoin() + " setlinejoin"); + append(_stroke.getEndCap() + " setlinecap"); + + StringBuffer dashes = new StringBuffer(); + dashes.append("[ "); + float[] dashArray = _stroke.getDashArray(); + if (dashArray != null) + { + for (int i = 0; i < dashArray.length; i++) + { + dashes.append((dashArray[i]) + " "); + } + } + dashes.append("]"); + append(dashes.toString() + " 0 setdash"); + } + } + + /** + * Sets a rendering hint. These are not used by EpsGraphics2D. + */ + public void setRenderingHint(RenderingHints.Key hintKey, Object hintValue) + { + // Do nothing. + } + + /** + * Returns the value of a single preference for the rendering algorithms. + * Rendering hints are not used by EpsGraphics2D. + */ + public Object getRenderingHint(RenderingHints.Key hintKey) + { + return null; + } + + /** + * Sets the rendering hints. These are ignored by EpsGraphics2D. + */ + public void setRenderingHints(Map hints) + { + // Do nothing. + } + + /** + * Adds rendering hints. These are ignored by EpsGraphics2D. + */ + public void addRenderingHints(Map hints) + { + // Do nothing. + } + + /** + * Returns the preferences for the rendering algorithms. + */ + public RenderingHints getRenderingHints() + { + return new RenderingHints(null); + } + + /** + * Translates the origin of the EpsGraphics2D context to the point (x,y) in + * the current coordinate system. + */ + public void translate(int x, int y) + { + translate((double) x, (double) y); + } + + /** + * Concatenates the current EpsGraphics2D Transformation with a translation + * transform. + */ + public void translate(double tx, double ty) + { + transform(AffineTransform.getTranslateInstance(tx, ty)); + } + + /** + * Concatenates the current EpsGraphics2D Transform with a rotation transform. + */ + public void rotate(double theta) + { + rotate(theta, 0, 0); + } + + /** + * Concatenates the current EpsGraphics2D Transform with a translated rotation + * transform. + */ + public void rotate(double theta, double x, double y) + { + transform(AffineTransform.getRotateInstance(theta, x, y)); + } + + /** + * Concatenates the current EpsGraphics2D Transform with a scaling + * transformation. + */ + public void scale(double sx, double sy) + { + transform(AffineTransform.getScaleInstance(sx, sy)); + } + + /** + * Concatenates the current EpsGraphics2D Transform with a shearing transform. + */ + public void shear(double shx, double shy) + { + transform(AffineTransform.getShearInstance(shx, shy)); + } + + /** + * Composes an AffineTransform object with the Transform in this EpsGraphics2D + * according to the rule last-specified-first-applied. + */ + public void transform(AffineTransform Tx) + { + _transform.concatenate(Tx); + setTransform(getTransform()); + } + + /** + * Sets the AffineTransform to be used by this EpsGraphics2D. + */ + public void setTransform(AffineTransform Tx) + { + if (Tx == null) + { + _transform = new AffineTransform(); + } + else + { + _transform = new AffineTransform(Tx); + } + // Need to update the stroke and font so they know the scale changed + setStroke(getStroke()); + setFont(getFont()); + } + + /** + * Gets the AffineTransform used by this EpsGraphics2D. + */ + public AffineTransform getTransform() + { + return new AffineTransform(_transform); + } + + /** + * Returns the current Paint of the EpsGraphics2D object. + */ + public Paint getPaint() + { + return _paint; + } + + /** + * returns the current Composite of the EpsGraphics2D object. + */ + public Composite getComposite() + { + return _composite; + } + + /** + * Sets the background color to be used by the clearRect method. + */ + public void setBackground(Color color) + { + if (color == null) + { + color = Color.black; + } + _backgroundColor = color; + } + + /** + * Gets the background color that is used by the clearRect method. + */ + public Color getBackground() + { + return _backgroundColor; + } + + /** + * Returns the Stroke currently used. Guaranteed to be an instance of + * BasicStroke. + */ + public Stroke getStroke() + { + return _stroke; + } + + /** + * Intersects the current clip with the interior of the specified Shape and + * sets the clip to the resulting intersection. + */ + public void clip(Shape s) + { + if (_clip == null) + { + setClip(s); + } + else + { + Area area = new Area(_clip); + area.intersect(new Area(s)); + setClip(area); + } + } + + /** + * Returns the FontRenderContext. + */ + public FontRenderContext getFontRenderContext() + { + return _fontRenderContext; + } + + // ///////////// Graphics methods /////////////////////// + + /** + * Returns a new Graphics object that is identical to this EpsGraphics2D. + */ + public Graphics create() + { + return new EpsGraphics2D(this); + } + + /** + * Returns an EpsGraphics2D object based on this Graphics object, but with a + * new translation and clip area. + */ + public Graphics create(int x, int y, int width, int height) + { + Graphics g = create(); + g.translate(x, y); + g.clipRect(0, 0, width, height); + return g; + } + + /** + * Returns the current Color. This will be a default value (black) until it is + * changed using the setColor method. + */ + public Color getColor() + { + return _color; + } + + /** + * Sets the Color to be used when drawing all future shapes, text, etc. + */ + public void setColor(Color c) + { + if (c == null) + { + c = Color.black; + } + _color = c; + append((c.getRed() / 255f) + " " + (c.getGreen() / 255f) + " " + + (c.getBlue() / 255f) + " setrgbcolor"); + } + + /** + * Sets the paint mode of this EpsGraphics2D object to overwrite the + * destination EpsDocument with the current color. + */ + public void setPaintMode() + { + // Do nothing - paint mode is the only method supported anyway. + } + + /** + * Not implemented - performs no + * action. + */ + public void setXORMode(Color c1) + { + methodNotSupported(); + } + + /** + * Returns the Font currently being used. + */ + public Font getFont() + { + return _font; + } + + /** + * Sets the Font to be used in future text. + */ + public void setFont(Font font) + { + if (font == null) + { + font = Font.decode(null); + } + _font = font; + append("/" + _font.getPSName() + " findfont " + ((int) _font.getSize()) + + " scalefont setfont"); + } + + /** + * Gets the font metrics of the current font. + */ + public FontMetrics getFontMetrics() + { + return getFontMetrics(getFont()); + } + + /** + * Gets the font metrics for the specified font. + */ + public FontMetrics getFontMetrics(Font f) + { + BufferedImage image = new BufferedImage(1, 1, + BufferedImage.TYPE_INT_RGB); + Graphics g = image.getGraphics(); + return g.getFontMetrics(f); + } + + /** + * Returns the bounding rectangle of the current clipping area. + */ + public Rectangle getClipBounds() + { + if (_clip == null) + { + return null; + } + Rectangle rect = getClip().getBounds(); + return rect; + } + + /** + * Intersects the current clip with the specified rectangle. + */ + public void clipRect(int x, int y, int width, int height) + { + clip(new Rectangle(x, y, width, height)); + } + + /** + * Sets the current clip to the rectangle specified by the given coordinates. + */ + public void setClip(int x, int y, int width, int height) + { + setClip(new Rectangle(x, y, width, height)); + } + + /** + * Gets the current clipping area. + */ + public Shape getClip() + { + if (_clip == null) + { + return null; + } + else + { + try + { + AffineTransform t = _transform.createInverse(); + t.concatenate(_clipTransform); + return t.createTransformedShape(_clip); + } catch (Exception e) + { + throw new EpsException(MessageManager.formatMessage("exception.eps_unable_to_get_inverse_matrix", new String[]{_transform.toString()})); + } + } + } + + /** + * Sets the current clipping area to an arbitrary clip shape. + */ + public void setClip(Shape clip) + { + if (clip != null) + { + if (_document.isClipSet()) + { + append("grestore"); + append("gsave"); + } + else + { + _document.setClipSet(true); + append("gsave"); + } + draw(clip, "clip"); + _clip = clip; + _clipTransform = (AffineTransform) _transform.clone(); + } + else + { + if (_document.isClipSet()) + { + append("grestore"); + _document.setClipSet(false); + } + _clip = null; + } + } + + /** + * Not implemented - performs no + * action. + */ + public void copyArea(int x, int y, int width, int height, int dx, int dy) + { + methodNotSupported(); + } + + /** + * Draws a straight line from (x1,y1) to (x2,y2). + */ + public void drawLine(int x1, int y1, int x2, int y2) + { + Shape shape = new Line2D.Float(x1, y1, x2, y2); + draw(shape); + } + + /** + * Fills a rectangle with top-left corner placed at (x,y). + */ + public void fillRect(int x, int y, int width, int height) + { + Shape shape = new Rectangle(x, y, width, height); + draw(shape, "fill"); + } + + /** + * Draws a rectangle with top-left corner placed at (x,y). + */ + public void drawRect(int x, int y, int width, int height) + { + Shape shape = new Rectangle(x, y, width, height); + draw(shape); + } + + /** + * Clears a rectangle with top-left corner placed at (x,y) using the current + * background color. + */ + public void clearRect(int x, int y, int width, int height) + { + Color originalColor = getColor(); + + setColor(getBackground()); + Shape shape = new Rectangle(x, y, width, height); + draw(shape, "fill"); + + setColor(originalColor); + } + + /** + * Draws a rounded rectangle. + */ + public void drawRoundRect(int x, int y, int width, int height, + int arcWidth, int arcHeight) + { + Shape shape = new RoundRectangle2D.Float(x, y, width, height, arcWidth, + arcHeight); + draw(shape); + } + + /** + * Fills a rounded rectangle. + */ + public void fillRoundRect(int x, int y, int width, int height, + int arcWidth, int arcHeight) + { + Shape shape = new RoundRectangle2D.Float(x, y, width, height, arcWidth, + arcHeight); + draw(shape, "fill"); + } + + /** + * Draws an oval. + */ + public void drawOval(int x, int y, int width, int height) + { + Shape shape = new Ellipse2D.Float(x, y, width, height); + draw(shape); + } + + /** + * Fills an oval. + */ + public void fillOval(int x, int y, int width, int height) + { + Shape shape = new Ellipse2D.Float(x, y, width, height); + draw(shape, "fill"); + } + + /** + * Draws an arc. + */ + public void drawArc(int x, int y, int width, int height, int startAngle, + int arcAngle) + { + Shape shape = new Arc2D.Float(x, y, width, height, startAngle, + arcAngle, Arc2D.OPEN); + draw(shape); + } + + /** + * Fills an arc. + */ + public void fillArc(int x, int y, int width, int height, int startAngle, + int arcAngle) + { + Shape shape = new Arc2D.Float(x, y, width, height, startAngle, + arcAngle, Arc2D.PIE); + draw(shape, "fill"); + } + + /** + * Draws a polyline. + */ + public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints) + { + if (nPoints > 0) + { + GeneralPath path = new GeneralPath(); + path.moveTo(xPoints[0], yPoints[0]); + for (int i = 1; i < nPoints; i++) + { + path.lineTo(xPoints[i], yPoints[i]); + } + draw(path); + } + } + + /** + * Draws a polygon made with the specified points. + */ + public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints) + { + Shape shape = new Polygon(xPoints, yPoints, nPoints); + draw(shape); + } + + /** + * Draws a polygon. + */ + public void drawPolygon(Polygon p) + { + draw(p); + } + + /** + * Fills a polygon made with the specified points. + */ + public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints) + { + Shape shape = new Polygon(xPoints, yPoints, nPoints); + draw(shape, "fill"); + } + + /** + * Fills a polygon. + */ + public void fillPolygon(Polygon p) + { + draw(p, "fill"); + } + + /** + * Draws the specified characters, starting from (x,y) + */ + public void drawChars(char[] data, int offset, int length, int x, int y) + { + String string = new String(data, offset, length); + drawString(string, x, y); + } + + /** + * Draws the specified bytes, starting from (x,y) + */ + public void drawBytes(byte[] data, int offset, int length, int x, int y) + { + String string = new String(data, offset, length); + drawString(string, x, y); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int x, int y, ImageObserver observer) + { + return drawImage(img, x, y, Color.white, observer); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int x, int y, int width, int height, + ImageObserver observer) + { + return drawImage(img, x, y, width, height, Color.white, observer); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int x, int y, Color bgcolor, + ImageObserver observer) + { + int width = img.getWidth(null); + int height = img.getHeight(null); + return drawImage(img, x, y, width, height, bgcolor, observer); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int x, int y, int width, int height, + Color bgcolor, ImageObserver observer) + { + return drawImage(img, x, y, x + width, y + height, 0, 0, width, height, + bgcolor, observer); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, + int sx1, int sy1, int sx2, int sy2, ImageObserver observer) + { + return drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, + Color.white, observer); + } + + /** + * Draws an image. + */ + public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, + int sx1, int sy1, int sx2, int sy2, Color bgcolor, + ImageObserver observer) + { + if (dx1 >= dx2) + { + throw new IllegalArgumentException("dx1 >= dx2"); + } + if (sx1 >= sx2) + { + throw new IllegalArgumentException("sx1 >= sx2"); + } + if (dy1 >= dy2) + { + throw new IllegalArgumentException("dy1 >= dy2"); + } + if (sy1 >= sy2) + { + throw new IllegalArgumentException("sy1 >= sy2"); + } + + append("gsave"); + + int width = sx2 - sx1; + int height = sy2 - sy1; + int destWidth = dx2 - dx1; + int destHeight = dy2 - dy1; + + int[] pixels = new int[width * height]; + PixelGrabber pg = new PixelGrabber(img, sx1, sy1, sx2 - sx1, sy2 - sy1, + pixels, 0, width); + try + { + pg.grabPixels(); + } catch (InterruptedException e) + { + return false; + } + + AffineTransform matrix = new AffineTransform(_transform); + matrix.translate(dx1, dy1); + matrix.scale(destWidth / (double) width, destHeight / (double) height); + double[] m = new double[6]; + try + { + matrix = matrix.createInverse(); + } catch (Exception e) + { + throw new EpsException(MessageManager.formatMessage("exception.eps_unable_to_get_inverse_matrix", new String[]{matrix.toString()})); + } + matrix.scale(1, -1); + matrix.getMatrix(m); + append(width + " " + height + " 8 [" + m[0] + " " + m[1] + " " + m[2] + + " " + m[3] + " " + m[4] + " " + m[5] + "]"); + // Fill the background to update the bounding box. + Color oldColor = getColor(); + setColor(getBackground()); + fillRect(dx1, dy1, destWidth, destHeight); + setColor(oldColor); + append("{currentfile 3 " + width + + " mul string readhexstring pop} bind"); + append("false 3 colorimage"); + StringBuffer line = new StringBuffer(); + for (int y = 0; y < height; y++) + { + for (int x = 0; x < width; x++) + { + Color color = new Color(pixels[x + width * y]); + line.append(toHexString(color.getRed()) + + toHexString(color.getGreen()) + + toHexString(color.getBlue())); + if (line.length() > 64) + { + append(line.toString()); + line = new StringBuffer(); + } + } + } + if (line.length() > 0) + { + append(line.toString()); + } + + append("grestore"); + + return true; + } + + /** + * Disposes of all resources used by this EpsGraphics2D object. If this is the + * only remaining EpsGraphics2D instance pointing at a EpsDocument object, + * then the EpsDocument object shall become eligible for garbage collection. + */ + public void dispose() + { + _document = null; + } + + /** + * Finalizes the object. + */ + public void finalize() + { + super.finalize(); + } + + /** + * Returns the entire contents of the EPS document, complete with headers and + * bounding box. The returned String is suitable for being written directly to + * disk as an EPS file. + */ + public String toString() + { + StringWriter writer = new StringWriter(); + try + { + _document.write(writer); + _document.flush(); + _document.close(); + } catch (IOException e) + { + throw new EpsException(e.toString()); + } + return writer.toString(); + } + + /** + * Returns true if the specified rectangular area might intersect the current + * clipping area. + */ + public boolean hitClip(int x, int y, int width, int height) + { + if (_clip == null) + { + return true; + } + Rectangle rect = new Rectangle(x, y, width, height); + return hit(rect, _clip, true); + } + + /** + * Returns the bounding rectangle of the current clipping area. + */ + public Rectangle getClipBounds(Rectangle r) + { + if (_clip == null) + { + return r; + } + Rectangle rect = getClipBounds(); + r.setLocation((int) rect.getX(), (int) rect.getY()); + r.setSize((int) rect.getWidth(), (int) rect.getHeight()); + return r; + } + + private Color _color; + + private Color _backgroundColor; + + private Paint _paint; + + private Composite _composite; + + private BasicStroke _stroke; + + private Font _font; + + private Shape _clip; + + private AffineTransform _clipTransform; + + private AffineTransform _transform; + + private boolean _accurateTextMode; + + private EpsDocument _document; + + private static FontRenderContext _fontRenderContext = new FontRenderContext( + null, false, true); +}