/* * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.print; import java.util.Map; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Composite; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Font; import java.awt.FontMetrics; import java.awt.font.FontRenderContext; import java.awt.Graphics; import java.awt.GraphicsConfiguration; import java.awt.Image; import java.awt.Paint; import java.awt.Rectangle; import java.awt.Shape; import java.awt.Stroke; import java.awt.RenderingHints; import java.awt.RenderingHints.Key; import java.awt.font.GlyphVector; import java.awt.font.TextLayout; import java.awt.geom.AffineTransform; import java.awt.geom.Line2D; import java.awt.geom.Point2D; import java.awt.geom.Rectangle2D; import java.awt.geom.RoundRectangle2D; import java.awt.image.BufferedImage; import java.awt.image.BufferedImageOp; import java.awt.image.ImageObserver; import java.awt.image.RenderedImage; import java.awt.image.renderable.RenderableImage; import java.awt.print.PrinterGraphics; import java.awt.print.PrinterJob; import java.text.AttributedCharacterIterator; import sun.java2d.Spans; public class PeekGraphics extends Graphics2D implements PrinterGraphics, ImageObserver, Cloneable { /** * Drawing methods will be forwarded to this object. */ Graphics2D mGraphics; /** * The PrinterJob controlling the current printing. */ PrinterJob mPrinterJob; /** * Keeps track of where drawing occurs on the page. */ private Spans mDrawingArea = new Spans(); /** * Track information about the types of drawing * performed by the printing application. */ private PeekMetrics mPrintMetrics = new PeekMetrics(); /** * If true the application will only be drawing AWT style * graphics, no Java2D graphics. */ private boolean mAWTDrawingOnly = false; /** * The new PeekGraphics2D will forward state changing * calls to 'graphics'. 'printerJob' is stored away * so that the printing application can get the PrinterJob * if needed. */ public PeekGraphics(Graphics2D graphics, PrinterJob printerJob) { mGraphics = graphics; mPrinterJob = printerJob; } /** * Return the Graphics2D object that does the drawing * for this instance. */ public Graphics2D getDelegate() { return mGraphics; } /** * Set the Graphics2D instance which will do the * drawing. */ public void setDelegate(Graphics2D graphics) { mGraphics = graphics; } public PrinterJob getPrinterJob() { return mPrinterJob; } /** * The caller promises that only AWT graphics will be drawn. * The print system can use this information to make general * assumptions about the types of graphics to be drawn without * requiring the application to draw the contents multiple * times. */ public void setAWTDrawingOnly() { mAWTDrawingOnly = true; } public boolean getAWTDrawingOnly() { return mAWTDrawingOnly; } /** * Return a Spans instance describing the parts of the page in * to which drawing occurred. */ public Spans getDrawingArea() { return mDrawingArea; } /** * Returns the device configuration associated with this Graphics2D. */ public GraphicsConfiguration getDeviceConfiguration() { return ((RasterPrinterJob)mPrinterJob).getPrinterGraphicsConfig(); } /* The Delegated Graphics Methods */ /** * Creates a new Graphics object that is * a copy of this Graphics object. * @return a new graphics context that is a copy of * this graphics context. * @since JDK1.0 */ public Graphics create() { PeekGraphics newGraphics = null; try { newGraphics = (PeekGraphics) clone(); newGraphics.mGraphics = (Graphics2D) mGraphics.create(); /* This exception can not happen unless this * class no longer implements the Cloneable * interface. */ } catch (CloneNotSupportedException e) { // can never happen. } return newGraphics; } /** * Translates the origin of the graphics context to the point * (xy) in the current coordinate system. * Modifies this graphics context so that its new origin corresponds * to the point (xy) in this graphics context's * original coordinate system. All coordinates used in subsequent * rendering operations on this graphics context will be relative * to this new origin. * @param x the x coordinate. * @param y the y coordinate. * @since JDK1.0 */ public void translate(int x, int y) { mGraphics.translate(x, y); } /** * Concatenates the current transform of this Graphics2D with a * translation transformation. * This is equivalent to calling transform(T), where T is an * AffineTransform represented by the following matrix: *
     *          [   1    0    tx  ]
     *          [   0    1    ty  ]
     *          [   0    0    1   ]
     * 
*/ public void translate(double tx, double ty) { mGraphics.translate(tx, ty); } /** * Concatenates the current transform of this Graphics2D with a * rotation transformation. * This is equivalent to calling transform(R), where R is an * AffineTransform represented by the following matrix: *
     *          [   cos(theta)    -sin(theta)    0   ]
     *          [   sin(theta)     cos(theta)    0   ]
     *          [       0              0         1   ]
     * 
* Rotating with a positive angle theta rotates points on the positive * x axis toward the positive y axis. * @param theta The angle of rotation in radians. */ public void rotate(double theta) { mGraphics.rotate(theta); } /** * Concatenates the current transform of this Graphics2D with a * translated rotation transformation. * This is equivalent to the following sequence of calls: *
     *          translate(x, y);
     *          rotate(theta);
     *          translate(-x, -y);
     * 
* Rotating with a positive angle theta rotates points on the positive * x axis toward the positive y axis. * @param theta The angle of rotation in radians. * @param x The x coordinate of the origin of the rotation * @param y The x coordinate of the origin of the rotation */ public void rotate(double theta, double x, double y) { mGraphics.rotate(theta, x, y); } /** * Concatenates the current transform of this Graphics2D with a * scaling transformation. * This is equivalent to calling transform(S), where S is an * AffineTransform represented by the following matrix: *
     *          [   sx   0    0   ]
     *          [   0    sy   0   ]
     *          [   0    0    1   ]
     * 
*/ public void scale(double sx, double sy) { mGraphics.scale(sx, sy); } /** * Concatenates the current transform of this Graphics2D with a * shearing transformation. * This is equivalent to calling transform(SH), where SH is an * AffineTransform represented by the following matrix: *
     *          [   1   shx   0   ]
     *          [  shy   1    0   ]
     *          [   0    0    1   ]
     * 
* @param shx The factor by which coordinates are shifted towards the * positive X axis direction according to their Y coordinate * @param shy The factor by which coordinates are shifted towards the * positive Y axis direction according to their X coordinate */ public void shear(double shx, double shy) { mGraphics.shear(shx, shy); } /** * Gets this graphics context's current color. * @return this graphics context's current color. * @see java.awt.Color * @see java.awt.Graphics#setColor * @since JDK1.0 */ public Color getColor() { return mGraphics.getColor(); } /** * Sets this graphics context's current color to the specified * color. All subsequent graphics operations using this graphics * context use this specified color. * @param c the new rendering color. * @see java.awt.Color * @see java.awt.Graphics#getColor * @since JDK1.0 */ public void setColor(Color c) { mGraphics.setColor(c); } /** * Sets the paint mode of this graphics context to overwrite the * destination with this graphics context's current color. * This sets the logical pixel operation function to the paint or * overwrite mode. All subsequent rendering operations will * overwrite the destination with the current color. * @since JDK1.0 */ public void setPaintMode() { mGraphics.setPaintMode(); } /** * Sets the paint mode of this graphics context to alternate between * this graphics context's current color and the new specified color. * This specifies that logical pixel operations are performed in the * XOR mode, which alternates pixels between the current color and * a specified XOR color. *

* When drawing operations are performed, pixels which are the * current color are changed to the specified color, and vice versa. *

* Pixels that are of colors other than those two colors are changed * in an unpredictable but reversible manner; if the same figure is * drawn twice, then all pixels are restored to their original values. * @param c1 the XOR alternation color * @since JDK1.0 */ public void setXORMode(Color c1) { mGraphics.setXORMode(c1); } /** * Gets the current font. * @return this graphics context's current font. * @see java.awt.Font * @see java.awt.Graphics#setFont * @since JDK1.0 */ public Font getFont() { return mGraphics.getFont(); } /** * Sets this graphics context's font to the specified font. * All subsequent text operations using this graphics context * use this font. * @param font the font. * @see java.awt.Graphics#getFont * @see java.awt.Graphics#drawChars(java.lang.String, int, int) * @see java.awt.Graphics#drawString(byte[], int, int, int, int) * @see java.awt.Graphics#drawBytes(char[], int, int, int, int) * @since JDK1.0 */ public void setFont(Font font) { mGraphics.setFont(font); } /** * Gets the font metrics for the specified font. * @return the font metrics for the specified font. * @param f the specified font * @see java.awt.Graphics#getFont * @see java.awt.FontMetrics * @see java.awt.Graphics#getFontMetrics() * @since JDK1.0 */ public FontMetrics getFontMetrics(Font f) { return mGraphics.getFontMetrics(f); } /** * Get the rendering context of the font * within this Graphics2D context. */ public FontRenderContext getFontRenderContext() { return mGraphics.getFontRenderContext(); } /** * Returns the bounding rectangle of the current clipping area. * The coordinates in the rectangle are relative to the coordinate * system origin of this graphics context. * @return the bounding rectangle of the current clipping area. * @see java.awt.Graphics#getClip * @see java.awt.Graphics#clipRect * @see java.awt.Graphics#setClip(int, int, int, int) * @see java.awt.Graphics#setClip(Shape) * @since JDK1.1 */ public Rectangle getClipBounds() { return mGraphics.getClipBounds(); } /** * Intersects the current clip with the specified rectangle. * The resulting clipping area is the intersection of the current * clipping area and the specified rectangle. * This method can only be used to make the current clip smaller. * To set the current clip larger, use any of the setClip methods. * Rendering operations have no effect outside of the clipping area. * @param x the x coordinate of the rectangle to intersect the clip with * @param y the y coordinate of the rectangle to intersect the clip with * @param width the width of the rectangle to intersect the clip with * @param height the height of the rectangle to intersect the clip with * @see #setClip(int, int, int, int) * @see #setClip(Shape) */ public void clipRect(int x, int y, int width, int height) { mGraphics.clipRect(x, y, width, height); } /** * Sets the current clip to the rectangle specified by the given * coordinates. * Rendering operations have no effect outside of the clipping area. * @param x the x coordinate of the new clip rectangle. * @param y the y coordinate of the new clip rectangle. * @param width the width of the new clip rectangle. * @param height the height of the new clip rectangle. * @see java.awt.Graphics#clipRect * @see java.awt.Graphics#setClip(Shape) * @since JDK1.1 */ public void setClip(int x, int y, int width, int height) { mGraphics.setClip(x, y, width, height); } /** * Gets the current clipping area. * @return a Shape object representing the * current clipping area. * @see java.awt.Graphics#getClipBounds * @see java.awt.Graphics#clipRect * @see java.awt.Graphics#setClip(int, int, int, int) * @see java.awt.Graphics#setClip(Shape) * @since JDK1.1 */ public Shape getClip() { return mGraphics.getClip(); } /** * Sets the current clipping area to an arbitrary clip shape. * Not all objects which implement the Shape * interface can be used to set the clip. The only * Shape objects which are guaranteed to be * supported are Shape objects which are * obtained via the getClip method and via * Rectangle objects. * @see java.awt.Graphics#getClip() * @see java.awt.Graphics#clipRect * @see java.awt.Graphics#setClip(int, int, int, int) * @since JDK1.1 */ public void setClip(Shape clip) { mGraphics.setClip(clip); } /** * Copies an area of the component by a distance specified by * dx and dy. From the point specified * by x and y, this method * copies downwards and to the right. To copy an area of the * component to the left or upwards, specify a negative value for * dx or dy. * If a portion of the source rectangle lies outside the bounds * of the component, or is obscured by another window or component, * copyArea will be unable to copy the associated * pixels. The area that is omitted can be refreshed by calling * the component's paint method. * @param x the x coordinate of the source rectangle. * @param y the y coordinate of the source rectangle. * @param width the width of the source rectangle. * @param height the height of the source rectangle. * @param dx the horizontal distance to copy the pixels. * @param dy the vertical distance to copy the pixels. * @since JDK1.0 */ public void copyArea(int x, int y, int width, int height, int dx, int dy) { // This method is not supported for printing so we do nothing here. } /** * Draws a line, using the current color, between the points * (x1, y1) and (x2, y2) * in this graphics context's coordinate system. * @param x1 the first point's x coordinate. * @param y1 the first point's y coordinate. * @param x2 the second point's x coordinate. * @param y2 the second point's y coordinate. * @since JDK1.0 */ public void drawLine(int x1, int y1, int x2, int y2) { addStrokeShape(new Line2D.Float(x1, y1, x2, y2)); mPrintMetrics.draw(this); } /** * Fills the specified rectangle. * The left and right edges of the rectangle are at * x and x + width - 1. * The top and bottom edges are at * y and y + height - 1. * The resulting rectangle covers an area * width pixels wide by * height pixels tall. * The rectangle is filled using the graphics context's current color. * @param x the x coordinate * of the rectangle to be filled. * @param y the y coordinate * of the rectangle to be filled. * @param width the width of the rectangle to be filled. * @param height the height of the rectangle to be filled. * @see java.awt.Graphics#fillRect * @see java.awt.Graphics#clearRect * @since JDK1.0 */ public void fillRect(int x, int y, int width, int height) { addDrawingRect(new Rectangle2D.Float(x, y, width, height)); mPrintMetrics.fill(this); } /** * Clears the specified rectangle by filling it with the background * color of the current drawing surface. This operation does not * use the current paint mode. *

* Beginning with Java 1.1, the background color * of offscreen images may be system dependent. Applications should * use setColor followed by fillRect to * ensure that an offscreen image is cleared to a specific color. * @param x the x coordinate of the rectangle to clear. * @param y the y coordinate of the rectangle to clear. * @param width the width of the rectangle to clear. * @param height the height of the rectangle to clear. * @see java.awt.Graphics#fillRect(int, int, int, int) * @see java.awt.Graphics#drawRect * @see java.awt.Graphics#setColor(java.awt.Color) * @see java.awt.Graphics#setPaintMode * @see java.awt.Graphics#setXORMode(java.awt.Color) * @since JDK1.0 */ public void clearRect(int x, int y, int width, int height) { Rectangle2D.Float rect = new Rectangle2D.Float(x, y, width, height); addDrawingRect(rect); mPrintMetrics.clear(this); } /** * Draws an outlined round-cornered rectangle using this graphics * context's current color. The left and right edges of the rectangle * are at x and x + width, * respectively. The top and bottom edges of the rectangle are at * y and y + height. * @param x the x coordinate of the rectangle to be drawn. * @param y the y coordinate of the rectangle to be drawn. * @param width the width of the rectangle to be drawn. * @param height the height of the rectangle to be drawn. * @param arcWidth the horizontal diameter of the arc * at the four corners. * @param arcHeight the vertical diameter of the arc * at the four corners. * @see java.awt.Graphics#fillRoundRect * @since JDK1.0 */ public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) { addStrokeShape(new RoundRectangle2D.Float(x, y, width, height, arcWidth, arcHeight)); mPrintMetrics.draw(this); } /** * Fills the specified rounded corner rectangle with the current color. * The left and right edges of the rectangle * are at x and x + width - 1, * respectively. The top and bottom edges of the rectangle are at * y and y + height - 1. * @param x the x coordinate of the rectangle to be filled. * @param y the y coordinate of the rectangle to be filled. * @param width the width of the rectangle to be filled. * @param height the height of the rectangle to be filled. * @param arcWidth the horizontal diameter * of the arc at the four corners. * @param arcHeight the vertical diameter * of the arc at the four corners. * @see java.awt.Graphics#drawRoundRect * @since JDK1.0 */ public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight) { Rectangle2D.Float rect = new Rectangle2D.Float(x, y,width, height); addDrawingRect(rect); mPrintMetrics.fill(this); } /** * Draws the outline of an oval. * The result is a circle or ellipse that fits within the * rectangle specified by the x, y, * width, and height arguments. *

* The oval covers an area that is * width + 1 pixels wide * and height + 1 pixels tall. * @param x the x coordinate of the upper left * corner of the oval to be drawn. * @param y the y coordinate of the upper left * corner of the oval to be drawn. * @param width the width of the oval to be drawn. * @param height the height of the oval to be drawn. * @see java.awt.Graphics#fillOval * @since JDK1.0 */ public void drawOval(int x, int y, int width, int height) { addStrokeShape(new Rectangle2D.Float(x, y, width, height)); mPrintMetrics.draw(this); } /** * Fills an oval bounded by the specified rectangle with the * current color. * @param x the x coordinate of the upper left corner * of the oval to be filled. * @param y the y coordinate of the upper left corner * of the oval to be filled. * @param width the width of the oval to be filled. * @param height the height of the oval to be filled. * @see java.awt.Graphics#drawOval * @since JDK1.0 */ public void fillOval(int x, int y, int width, int height) { Rectangle2D.Float rect = new Rectangle2D.Float(x, y, width, height); addDrawingRect(rect); mPrintMetrics.fill(this); } /** * Draws the outline of a circular or elliptical arc * covering the specified rectangle. *

* The resulting arc begins at startAngle and extends * for arcAngle degrees, using the current color. * Angles are interpreted such that 0 degrees * is at the 3 o'clock position. * A positive value indicates a counter-clockwise rotation * while a negative value indicates a clockwise rotation. *

* The center of the arc is the center of the rectangle whose origin * is (xy) and whose size is specified by the * width and height arguments. *

* The resulting arc covers an area * width + 1 pixels wide * by height + 1 pixels tall. * @param x the x coordinate of the * upper-left corner of the arc to be drawn. * @param y the y coordinate of the * upper-left corner of the arc to be drawn. * @param width the width of the arc to be drawn. * @param height the height of the arc to be drawn. * @param startAngle the beginning angle. * @param arcAngle the angular extent of the arc, * relative to the start angle. * @see java.awt.Graphics#fillArc * @since JDK1.0 */ public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) { addStrokeShape(new Rectangle2D.Float(x, y, width, height)); mPrintMetrics.draw(this); } /** * Fills a circular or elliptical arc covering the specified rectangle. *

* The resulting arc begins at startAngle and extends * for arcAngle degrees. * Angles are interpreted such that 0 degrees * is at the 3 o'clock position. * A positive value indicates a counter-clockwise rotation * while a negative value indicates a clockwise rotation. *

* The center of the arc is the center of the rectangle whose origin * is (xy) and whose size is specified by the * width and height arguments. *

* The resulting arc covers an area * width + 1 pixels wide * by height + 1 pixels tall. * @param x the x coordinate of the * upper-left corner of the arc to be filled. * @param y the y coordinate of the * upper-left corner of the arc to be filled. * @param width the width of the arc to be filled. * @param height the height of the arc to be filled. * @param startAngle the beginning angle. * @param arcAngle the angular extent of the arc, * relative to the start angle. * @see java.awt.Graphics#drawArc * @since JDK1.0 */ public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) { Rectangle2D.Float rect = new Rectangle2D.Float(x, y,width, height); addDrawingRect(rect); mPrintMetrics.fill(this); } /** * Draws a sequence of connected lines defined by * arrays of x and y coordinates. * Each pair of (xy) coordinates defines a point. * The figure is not closed if the first point * differs from the last point. * @param xPoints an array of x points * @param yPoints an array of y points * @param nPoints the total number of points * @see java.awt.Graphics#drawPolygon(int[], int[], int) * @since JDK1.1 */ public void drawPolyline(int xPoints[], int yPoints[], int nPoints) { if (nPoints > 0) { int x = xPoints[0]; int y = yPoints[0]; for (int i = 1; i < nPoints; i++) { drawLine(x, y, xPoints[i], yPoints[i]); x = xPoints[i]; y = yPoints[i]; } } } /** * Draws a closed polygon defined by * arrays of x and y coordinates. * Each pair of (xy) coordinates defines a point. *

* This method draws the polygon defined by nPoint line * segments, where the first nPoint - 1 * line segments are line segments from * (xPoints[i - 1], yPoints[i - 1]) * to (xPoints[i], yPoints[i]), for * 1 ≤ i ≤ nPoints. * The figure is automatically closed by drawing a line connecting * the final point to the first point, if those points are different. * @param xPoints a an array of x coordinates. * @param yPoints a an array of y coordinates. * @param nPoints a the total number of points. * @see java.awt.Graphics#fillPolygon * @see java.awt.Graphics#drawPolyline * @since JDK1.0 */ public void drawPolygon(int xPoints[], int yPoints[], int nPoints) { if (nPoints > 0) { drawPolyline(xPoints, yPoints, nPoints); drawLine(xPoints[nPoints - 1], yPoints[nPoints - 1], xPoints[0], yPoints[0]); } } /** * Fills a closed polygon defined by * arrays of x and y coordinates. *

* This method draws the polygon defined by nPoint line * segments, where the first nPoint - 1 * line segments are line segments from * (xPoints[i - 1], yPoints[i - 1]) * to (xPoints[i], yPoints[i]), for * 1 ≤ i ≤ nPoints. * The figure is automatically closed by drawing a line connecting * the final point to the first point, if those points are different. *

* The area inside the polygon is defined using an * even-odd fill rule, also known as the alternating rule. * @param xPoints a an array of x coordinates. * @param yPoints a an array of y coordinates. * @param nPoints a the total number of points. * @see java.awt.Graphics#drawPolygon(int[], int[], int) * @since JDK1.0 */ public void fillPolygon(int xPoints[], int yPoints[], int nPoints) { if (nPoints > 0) { int minX = xPoints[0]; int minY = yPoints[0]; int maxX = xPoints[0]; int maxY = yPoints[0]; for (int i = 1; i < nPoints; i++) { if (xPoints[i] < minX) { minX = xPoints[i]; } else if (xPoints[i] > maxX) { maxX = xPoints[i]; } if (yPoints[i] < minY) { minY = yPoints[i]; } else if (yPoints[i] > maxY) { maxY = yPoints[i]; } } addDrawingRect(minX, minY, maxX - minX, maxY - minY); } mPrintMetrics.fill(this); } /** * Draws the text given by the specified string, using this * graphics context's current font and color. The baseline of the * first character is at position (xy) in this * graphics context's coordinate system. * @param str the string to be drawn. * @param x the x coordinate. * @param y the y coordinate. * @see java.awt.Graphics#drawBytes * @see java.awt.Graphics#drawChars * @since JDK1.0 */ public void drawString(String str, int x, int y) { drawString(str, (float)x, (float)y); } /** * Draws the text given by the specified iterator, using this * graphics context's current color. The iterator has to specify a font * for each character. The baseline of the * first character is at position (xy) in this * graphics context's coordinate system. * The rendering attributes applied include the clip, transform, * paint or color, and composite attributes. * For characters in script systems such as Hebrew and Arabic, * the glyphs may be draw from right to left, in which case the * coordinate supplied is the the location of the leftmost character * on the baseline. * @param iterator the iterator whose text is to be drawn * @param x,y the coordinates where the iterator's text should be drawn. * @see #setPaint * @see java.awt.Graphics#setColor * @see #setTransform * @see #setComposite * @see #setClip */ public void drawString(AttributedCharacterIterator iterator, int x, int y) { drawString(iterator, (float)x, (float)y); } /** * Draws the text given by the specified iterator, using this * graphics context's current color. The iterator has to specify a font * for each character. The baseline of the * first character is at position (xy) in this * graphics context's coordinate system. * The rendering attributes applied include the clip, transform, * paint or color, and composite attributes. * For characters in script systems such as Hebrew and Arabic, * the glyphs may be draw from right to left, in which case the * coordinate supplied is the the location of the leftmost character * on the baseline. * @param iterator the iterator whose text is to be drawn * @param x,y the coordinates where the iterator's text should be drawn. * @see #setPaint * @see java.awt.Graphics#setColor * @see #setTransform * @see #setComposite * @see #setClip */ public void drawString(AttributedCharacterIterator iterator, float x, float y) { if (iterator == null) { throw new NullPointerException("AttributedCharacterIterator is null"); } TextLayout layout = new TextLayout(iterator, getFontRenderContext()); layout.draw(this, x, y); } /** * Draws as much of the specified image as is currently available. * The image is drawn with its top-left corner at * (xy) in this graphics context's coordinate * space. Transparent pixels in the image do not affect whatever * pixels are already there. *

* This method returns immediately in all cases, even if the * complete image has not yet been loaded, and it has not been dithered * and converted for the current output device. *

* If the image has not yet been completely loaded, then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the specified image observer. * @param img the specified image to be drawn. * @param x the x coordinate. * @param y the y coordinate. * @param observer object to be notified as more of * the image is converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.0 */ public boolean drawImage(Image img, int x, int y, ImageObserver observer) { if (img == null) { return true; } /* The ImageWaiter creation does not return until the * image is loaded. */ ImageWaiter dim = new ImageWaiter(img); addDrawingRect(x, y, dim.getWidth(), dim.getHeight()); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, x, y, observer); } /** * Draws as much of the specified image as has already been scaled * to fit inside the specified rectangle. *

* The image is drawn inside the specified rectangle of this * graphics context's coordinate space, and is scaled if * necessary. Transparent pixels do not affect whatever pixels * are already there. *

* This method returns immediately in all cases, even if the * entire image has not yet been scaled, dithered, and converted * for the current output device. * If the current output representation is not yet complete, then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the image observer by calling its imageUpdate method. *

* A scaled version of an image will not necessarily be * available immediately just because an unscaled version of the * image has been constructed for this output device. Each size of * the image may be cached separately and generated from the original * data in a separate image production sequence. * @param img the specified image to be drawn. * @param x the x coordinate. * @param y the y coordinate. * @param width the width of the rectangle. * @param height the height of the rectangle. * @param observer object to be notified as more of * the image is converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.0 */ public boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer) { if (img == null) { return true; } addDrawingRect(x, y, width, height); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, x, y, width, height, observer); } /** * Draws as much of the specified image as is currently available. * The image is drawn with its top-left corner at * (xy) in this graphics context's coordinate * space. Transparent pixels are drawn in the specified * background color. *

* This operation is equivalent to filling a rectangle of the * width and height of the specified image with the given color and then * drawing the image on top of it, but possibly more efficient. *

* This method returns immediately in all cases, even if the * complete image has not yet been loaded, and it has not been dithered * and converted for the current output device. *

* If the image has not yet been completely loaded, then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the specified image observer. * @param img the specified image to be drawn. * @param x the x coordinate. * @param y the y coordinate. * @param bgcolor the background color to paint under the * non-opaque portions of the image. * @param observer object to be notified as more of * the image is converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.0 */ public boolean drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer) { if (img == null) { return true; } /* The ImageWaiter creation does not return until the * image is loaded. */ ImageWaiter dim = new ImageWaiter(img); addDrawingRect(x, y, dim.getWidth(), dim.getHeight()); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, x, y, bgcolor, observer); } /** * Draws as much of the specified image as has already been scaled * to fit inside the specified rectangle. *

* The image is drawn inside the specified rectangle of this * graphics context's coordinate space, and is scaled if * necessary. Transparent pixels are drawn in the specified * background color. * This operation is equivalent to filling a rectangle of the * width and height of the specified image with the given color and then * drawing the image on top of it, but possibly more efficient. *

* This method returns immediately in all cases, even if the * entire image has not yet been scaled, dithered, and converted * for the current output device. * If the current output representation is not yet complete then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the specified image observer. *

* A scaled version of an image will not necessarily be * available immediately just because an unscaled version of the * image has been constructed for this output device. Each size of * the image may be cached separately and generated from the original * data in a separate image production sequence. * @param img the specified image to be drawn. * @param x the x coordinate. * @param y the y coordinate. * @param width the width of the rectangle. * @param height the height of the rectangle. * @param bgcolor the background color to paint under the * non-opaque portions of the image. * @param observer object to be notified as more of * the image is converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.0 */ public boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer) { if (img == null) { return true; } addDrawingRect(x, y, width, height); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, x, y, width, height, bgcolor, observer); } /** * Draws as much of the specified area of the specified image as is * currently available, scaling it on the fly to fit inside the * specified area of the destination drawable surface. Transparent pixels * do not affect whatever pixels are already there. *

* This method returns immediately in all cases, even if the * image area to be drawn has not yet been scaled, dithered, and converted * for the current output device. * If the current output representation is not yet complete then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the specified image observer. *

* This method always uses the unscaled version of the image * to render the scaled rectangle and performs the required * scaling on the fly. It does not use a cached, scaled version * of the image for this operation. Scaling of the image from source * to destination is performed such that the first coordinate * of the source rectangle is mapped to the first coordinate of * the destination rectangle, and the second source coordinate is * mapped to the second destination coordinate. The subimage is * scaled and flipped as needed to preserve those mappings. * @param img the specified image to be drawn * @param dx1 the x coordinate of the first corner of the * destination rectangle. * @param dy1 the y coordinate of the first corner of the * destination rectangle. * @param dx2 the x coordinate of the second corner of the * destination rectangle. * @param dy2 the y coordinate of the second corner of the * destination rectangle. * @param sx1 the x coordinate of the first corner of the * source rectangle. * @param sy1 the y coordinate of the first corner of the * source rectangle. * @param sx2 the x coordinate of the second corner of the * source rectangle. * @param sy2 the y coordinate of the second corner of the * source rectangle. * @param observer object to be notified as more of the image is * scaled and converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.1 */ public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer) { if (img == null) { return true; } int width = dx2 - dx1; int height = dy2 - dy1; addDrawingRect(dx1, dy1, width, height); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, observer); } /** * Draws as much of the specified area of the specified image as is * currently available, scaling it on the fly to fit inside the * specified area of the destination drawable surface. *

* Transparent pixels are drawn in the specified background color. * This operation is equivalent to filling a rectangle of the * width and height of the specified image with the given color and then * drawing the image on top of it, but possibly more efficient. *

* This method returns immediately in all cases, even if the * image area to be drawn has not yet been scaled, dithered, and converted * for the current output device. * If the current output representation is not yet complete then * drawImage returns false. As more of * the image becomes available, the process that draws the image notifies * the specified image observer. *

* This method always uses the unscaled version of the image * to render the scaled rectangle and performs the required * scaling on the fly. It does not use a cached, scaled version * of the image for this operation. Scaling of the image from source * to destination is performed such that the first coordinate * of the source rectangle is mapped to the first coordinate of * the destination rectangle, and the second source coordinate is * mapped to the second destination coordinate. The subimage is * scaled and flipped as needed to preserve those mappings. * @param img the specified image to be drawn * @param dx1 the x coordinate of the first corner of the * destination rectangle. * @param dy1 the y coordinate of the first corner of the * destination rectangle. * @param dx2 the x coordinate of the second corner of the * destination rectangle. * @param dy2 the y coordinate of the second corner of the * destination rectangle. * @param sx1 the x coordinate of the first corner of the * source rectangle. * @param sy1 the y coordinate of the first corner of the * source rectangle. * @param sx2 the x coordinate of the second corner of the * source rectangle. * @param sy2 the y coordinate of the second corner of the * source rectangle. * @param bgcolor the background color to paint under the * non-opaque portions of the image. * @param observer object to be notified as more of the image is * scaled and converted. * @see java.awt.Image * @see java.awt.image.ImageObserver * @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int) * @since JDK1.1 */ 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 (img == null) { return true; } int width = dx2 - dx1; int height = dy2 - dy1; addDrawingRect(dx1, dy1, width, height); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, bgcolor, observer); } /** * Draws an image, applying a transform from image space into user space * before drawing. * The transformation from user space into device space is done with * the current transform in the Graphics2D. * The given transformation is applied to the image before the * transform attribute in the Graphics2D state is applied. * The rendering attributes applied include the clip, transform, * and composite attributes. Note that the result is * undefined, if the given transform is noninvertible. * @param img The image to be drawn. * @param xform The transformation from image space into user space. * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public void drawRenderedImage(RenderedImage img, AffineTransform xform) { if (img == null) { return; } mPrintMetrics.drawImage(this, img); mDrawingArea.addInfinite(); } public void drawRenderableImage(RenderableImage img, AffineTransform xform) { if (img == null) { return; } mPrintMetrics.drawImage(this, img); mDrawingArea.addInfinite(); } /** * Disposes of this graphics context and releases * any system resources that it is using. * A Graphics object cannot be used after * disposehas been called. *

* When a Java program runs, a large number of Graphics * objects can be created within a short time frame. * Although the finalization process of the garbage collector * also disposes of the same system resources, it is preferable * to manually free the associated resources by calling this * method rather than to rely on a finalization process which * may not run to completion for a long period of time. *

* Graphics objects which are provided as arguments to the * paint and update methods * of components are automatically released by the system when * those methods return. For efficiency, programmers should * call dispose when finished using * a Graphics object only if it was created * directly from a component or another Graphics object. * @see java.awt.Graphics#finalize * @see java.awt.Component#paint * @see java.awt.Component#update * @see java.awt.Component#getGraphics * @see java.awt.Graphics#create * @since JDK1.0 */ public void dispose() { mGraphics.dispose(); } /** * Empty finalizer as no clean up needed here. */ public void finalize() { } /* The Delegated Graphics2D Methods */ /** * Strokes the outline of a Shape using the settings of the current * graphics state. The rendering attributes applied include the * clip, transform, paint or color, composite and stroke attributes. * @param s The shape to be drawn. * @see #setStroke * @see #setPaint * @see java.awt.Graphics#setColor * @see #transform * @see #setTransform * @see #clip * @see #setClip * @see #setComposite */ public void draw(Shape s) { addStrokeShape(s); mPrintMetrics.draw(this); } /** * Draws an image, applying a transform from image space into user space * before drawing. * The transformation from user space into device space is done with * the current transform in the Graphics2D. * The given transformation is applied to the image before the * transform attribute in the Graphics2D state is applied. * The rendering attributes applied include the clip, transform, * and composite attributes. Note that the result is * undefined, if the given transform is noninvertible. * @param img The image to be drawn. * @param xform The transformation from image space into user space. * @param obs The image observer to be notified as more of the image * is converted. * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public boolean drawImage(Image img, AffineTransform xform, ImageObserver obs) { if (img == null) { return true; } mDrawingArea.addInfinite(); mPrintMetrics.drawImage(this, img); return mGraphics.drawImage(img, xform, obs); // if (mDrawingArea[0] != null) { // Rectangle2D.Double bbox = new Rectangle2D.Double(); // Point2D leftTop = new Point2D.Double(0, 0); // Point2D rightBottom = new Point2D.Double(getImageWidth(img), // getImageHeight(img)); // xform.transform(leftTop, leftTop); // xform.transform(rightBottom, rightBottom); // bbox.setBoundsFromDiagonal(leftTop, rightBottom); // addDrawingRect(bbox); // } } /** * Draws a BufferedImage that is filtered with a BufferedImageOp. * The rendering attributes applied include the clip, transform * and composite attributes. This is equivalent to: *

     * img1 = op.filter(img, null);
     * drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);
     * 
* @param op The filter to be applied to the image before drawing. * @param img The BufferedImage to be drawn. * @param x,y The location in user space where the image should be drawn. * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) { if (img == null) { return; } mPrintMetrics.drawImage(this, (RenderedImage) img); mDrawingArea.addInfinite(); } /** * Draws a string of text. * The rendering attributes applied include the clip, transform, * paint or color, font and composite attributes. * @param s The string to be drawn. * @param x,y The coordinates where the string should be drawn. * @see #setPaint * @see java.awt.Graphics#setColor * @see java.awt.Graphics#setFont * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public void drawString(String str, float x, float y) { if (str.length() == 0) { return; } /* Logical bounds close enough and is used for GlyphVector */ FontRenderContext frc = getFontRenderContext(); Rectangle2D bbox = getFont().getStringBounds(str, frc); addDrawingRect(bbox, x, y); mPrintMetrics.drawText(this); } /** * Draws a GlyphVector. * The rendering attributes applied include the clip, transform, * paint or color, and composite attributes. The GlyphVector specifies * individual glyphs from a Font. * @param g The GlyphVector to be drawn. * @param x,y The coordinates where the glyphs should be drawn. * @see #setPaint * @see java.awt.Graphics#setColor * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public void drawGlyphVector(GlyphVector g, float x, float y) { Rectangle2D bbox = g.getLogicalBounds(); addDrawingRect(bbox, x, y); mPrintMetrics.drawText(this); } /** * Fills the interior of a Shape using the settings of the current * graphics state. The rendering attributes applied include the * clip, transform, paint or color, and composite. * @see #setPaint * @see java.awt.Graphics#setColor * @see #transform * @see #setTransform * @see #setComposite * @see #clip * @see #setClip */ public void fill(Shape s) { addDrawingRect(s.getBounds()); mPrintMetrics.fill(this); } /** * Checks to see if the outline of a Shape intersects the specified * Rectangle in device space. * The rendering attributes taken into account include the * clip, transform, and stroke attributes. * @param rect The area in device space to check for a hit. * @param s The shape to check for a hit. * @param onStroke Flag to choose between testing the stroked or * the filled shape. * @return True if there is a hit, false otherwise. * @see #setStroke * @see #fill * @see #draw * @see #transform * @see #setTransform * @see #clip * @see #setClip */ public boolean hit(Rectangle rect, Shape s, boolean onStroke) { return mGraphics.hit(rect, s, onStroke); } /** * Sets the Composite in the current graphics state. Composite is used * in all drawing methods such as drawImage, drawString, draw, * and fill. It specifies how new pixels are to be combined with * the existing pixels on the graphics device in the rendering process. * @param comp The Composite object to be used for drawing. * @see java.awt.Graphics#setXORMode * @see java.awt.Graphics#setPaintMode * @see AlphaComposite */ public void setComposite(Composite comp) { mGraphics.setComposite(comp); } /** * Sets the Paint in the current graphics state. * @param paint The Paint object to be used to generate color in * the rendering process. * @see java.awt.Graphics#setColor * @see GradientPaint * @see TexturePaint */ public void setPaint(Paint paint) { mGraphics.setPaint(paint); } /** * Sets the Stroke in the current graphics state. * @param s The Stroke object to be used to stroke a Shape in * the rendering process. * @see BasicStroke */ public void setStroke(Stroke s) { mGraphics.setStroke(s); } /** * Sets the preferences for the rendering algorithms. * Hint categories include controls for rendering quality and * overall time/quality trade-off in the rendering process. * @param hintCategory The category of hint to be set. * @param hintValue The value indicating preferences for the specified * hint category. * @see RenderingHints */ public void setRenderingHint(Key hintCategory, Object hintValue) { mGraphics.setRenderingHint(hintCategory, hintValue); } /** * Returns the preferences for the rendering algorithms. * @param hintCategory The category of hint to be set. * @return The preferences for rendering algorithms. * @see RenderingHings */ public Object getRenderingHint(Key hintCategory) { return mGraphics.getRenderingHint(hintCategory); } /** * Sets the preferences for the rendering algorithms. * Hint categories include controls for rendering quality and * overall time/quality trade-off in the rendering process. * @param hints The rendering hints to be set * @see RenderingHints */ public void setRenderingHints(Map hints) { mGraphics.setRenderingHints(hints); } /** * Adds a number of preferences for the rendering algorithms. * Hint categories include controls for rendering quality and * overall time/quality trade-off in the rendering process. * @param hints The rendering hints to be set * @see RenderingHints */ public void addRenderingHints(Map hints) { mGraphics.addRenderingHints(hints); } /** * Gets the preferences for the rendering algorithms. * Hint categories include controls for rendering quality and * overall time/quality trade-off in the rendering process. * @see RenderingHints */ public RenderingHints getRenderingHints() { return mGraphics.getRenderingHints(); } /** * Composes a Transform object with the transform in this * Graphics2D according to the rule last-specified-first-applied. * If the currrent transform is Cx, the result of composition * with Tx is a new transform Cx'. Cx' becomes the current * transform for this Graphics2D. * Transforming a point p by the updated transform Cx' is * equivalent to first transforming p by Tx and then transforming * the result by the original transform Cx. In other words, * Cx'(p) = Cx(Tx(p)). * A copy of the Tx is made, if necessary, so further * modifications to Tx do not affect rendering. * @param Tx The Transform object to be composed with the current * transform. * @see #setTransform * @see TransformChain * @see AffineTransform */ public void transform(AffineTransform Tx) { mGraphics.transform(Tx); } /** * Sets the Transform in the current graphics state. * @param Tx The Transform object to be used in the rendering process. * @see #transform * @see TransformChain * @see AffineTransform */ public void setTransform(AffineTransform Tx) { mGraphics.setTransform(Tx); } /** * Returns the current Transform in the Graphics2D state. * @see #transform * @see #setTransform */ public AffineTransform getTransform() { return mGraphics.getTransform(); } /** * Returns the current Paint in the Graphics2D state. * @see #setPaint * @see java.awt.Graphics#setColor */ public Paint getPaint() { return mGraphics.getPaint(); } /** * Returns the current Composite in the Graphics2D state. * @see #setComposite */ public Composite getComposite() { return mGraphics.getComposite(); } /** * Sets the background color in this context used for clearing a region. * When Graphics2D is constructed for a component, the backgroung color is * inherited from the component. Setting the background color in the * Graphics2D context only affects the subsequent clearRect() calls and * not the background color of the component. To change the background * of the component, use appropriate methods of the component. * @param color The background color that should be used in * subsequent calls to clearRect(). * @see getBackground * @see Graphics.clearRect() */ public void setBackground(Color color) { mGraphics.setBackground(color); } /** * Returns the background color used for clearing a region. * @see setBackground */ public Color getBackground() { return mGraphics.getBackground(); } /** * Returns the current Stroke in the Graphics2D state. * @see setStroke */ public Stroke getStroke() { return mGraphics.getStroke(); } /** * Intersects the current clip with the interior of the specified Shape * and sets the current clip to the resulting intersection. * The indicated shape is transformed with the current transform in the * Graphics2D state before being intersected with the current clip. * This method is used to make the current clip smaller. * To make the clip larger, use any setClip method. * @param s The Shape to be intersected with the current clip. */ public void clip(Shape s) { mGraphics.clip(s); } /** * Return true if the Rectangle rect * intersects the area into which the application * has drawn. */ public boolean hitsDrawingArea(Rectangle rect) { return mDrawingArea.intersects((float) rect.getMinY(), (float) rect.getMaxY()); } /** * Return the object holding the summary of the * drawing done by the printing application. */ public PeekMetrics getMetrics() { return mPrintMetrics; } /* Support Routines for Calculating the Drawing Area */ /** * Shift the rectangle 'rect' to the position ('x', 'y') * and add the resulting rectangle to the area representing * the part of the page which is drawn into. */ private void addDrawingRect(Rectangle2D rect, float x, float y) { addDrawingRect((float) (rect.getX() + x), (float) (rect.getY() + y), (float) rect.getWidth(), (float) rect.getHeight()); } private void addDrawingRect(float x, float y, float width, float height) { Rectangle2D.Float bbox = new Rectangle2D.Float(x, y, width, height); addDrawingRect(bbox); } /** * Add the rectangle 'rect' to the area representing * the part of the page which is drawn into. */ private void addDrawingRect(Rectangle2D rect) { /* For testing purposes the following line can be uncommented. When uncommented it causes the entire page to be rasterized thus eliminating errors caused by a faulty bounding box calculation. */ //mDrawingArea.addInfinite(); AffineTransform matrix = getTransform(); Shape transShape = matrix.createTransformedShape(rect); Rectangle2D transRect = transShape.getBounds2D(); mDrawingArea.add((float) transRect.getMinY(), (float) transRect.getMaxY()); } /** * Add the stroked shape to the area representing * the part of the page which is drawn into. */ private void addStrokeShape(Shape s) { Shape transShape = getStroke().createStrokedShape(s); addDrawingRect(transShape.getBounds2D()); } /* Image Observer */ /** * Notify this object when the height or width become available * for an image. */ public synchronized boolean imageUpdate(Image img, int infoFlags, int x, int y, int width, int height) { boolean gotInfo = false; if((infoFlags & (WIDTH | HEIGHT)) != 0) { gotInfo = true; notify(); } return gotInfo; } private synchronized int getImageWidth(Image img) { /* Wait for the width the image to * become available. */ while (img.getWidth(this) == -1) { try { wait(); } catch (InterruptedException e) { } } return img.getWidth(this); } private synchronized int getImageHeight(Image img) { /* Wait for the height the image to * become available. */ while (img.getHeight(this) == -1) { try { wait(); } catch (InterruptedException e) { } } return img.getHeight(this); } /** * This private class does not return from its constructor * until 'img's width and height are available. */ protected class ImageWaiter implements ImageObserver { private int mWidth; private int mHeight; private boolean badImage = false; ImageWaiter(Image img) { waitForDimensions(img); } public int getWidth() { return mWidth; } public int getHeight() { return mHeight; } synchronized private void waitForDimensions(Image img) { mHeight = img.getHeight(this); mWidth = img.getWidth(this); while (!badImage && (mWidth < 0 || mHeight < 0)) { try { Thread.sleep(50); } catch(InterruptedException e) { // do nothing. } mHeight = img.getHeight(this); mWidth = img.getWidth(this); } if (badImage) { mHeight = 0; mWidth = 0; } } synchronized public boolean imageUpdate(Image image, int flags, int x, int y, int w, int h) { boolean dontCallMeAgain = (flags & (HEIGHT | ABORT | ERROR)) != 0; badImage = (flags & (ABORT | ERROR)) != 0; return dontCallMeAgain; } } }