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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.print; | |
| 27 | + | |
| 28 | +import java.awt.Color; | |
| 29 | +import java.awt.Font; | |
| 30 | +import java.awt.Graphics; | |
| 31 | +import java.awt.Graphics2D; | |
| 32 | +import java.awt.Image; | |
| 33 | +import java.awt.Shape; | |
| 34 | +import java.awt.Transparency; | |
| 35 | + | |
| 36 | +import java.awt.font.FontRenderContext; | |
| 37 | +import java.awt.font.TextLayout; | |
| 38 | + | |
| 39 | +import java.awt.geom.AffineTransform; | |
| 40 | +import java.awt.geom.Area; | |
| 41 | +import java.awt.geom.PathIterator; | |
| 42 | +import java.awt.geom.Point2D; | |
| 43 | +import java.awt.geom.Rectangle2D; | |
| 44 | +import java.awt.geom.Line2D; | |
| 45 | + | |
| 46 | +import java.awt.image.BufferedImage; | |
| 47 | +import sun.awt.image.ByteComponentRaster; | |
| 48 | + | |
| 49 | +import java.awt.print.PageFormat; | |
| 50 | +import java.awt.print.Printable; | |
| 51 | +import java.awt.print.PrinterException; | |
| 52 | +import java.awt.print.PrinterJob; | |
| 53 | + | |
| 54 | +/** | |
| 55 | + * This class converts paths into PostScript | |
| 56 | + * by breaking all graphics into fills and | |
| 57 | + * clips of paths. | |
| 58 | + */ | |
| 59 | + | |
| 60 | +class PSPathGraphics extends PathGraphics { | |
| 61 | + | |
| 62 | + /** | |
| 63 | + * For a drawing application the initial user space | |
| 64 | + * resolution is 72dpi. | |
| 65 | + */ | |
| 66 | + private static final int DEFAULT_USER_RES = 72; | |
| 67 | + | |
| 68 | + PSPathGraphics(Graphics2D graphics, PrinterJob printerJob, | |
| 69 | + Printable painter, PageFormat pageFormat, int pageIndex, | |
| 70 | + boolean canRedraw) { | |
| 71 | + super(graphics, printerJob, painter, pageFormat, pageIndex, canRedraw); | |
| 72 | + } | |
| 73 | + | |
| 74 | + /** | |
| 75 | + * Creates a new <code>Graphics</code> object that is | |
| 76 | + * a copy of this <code>Graphics</code> object. | |
| 77 | + * @return a new graphics context that is a copy of | |
| 78 | + * this graphics context. | |
| 79 | + * @since JDK1.0 | |
| 80 | + */ | |
| 81 | + public Graphics create() { | |
| 82 | + | |
| 83 | + return new PSPathGraphics((Graphics2D) getDelegate().create(), | |
| 84 | + getPrinterJob(), | |
| 85 | + getPrintable(), | |
| 86 | + getPageFormat(), | |
| 87 | + getPageIndex(), | |
| 88 | + canDoRedraws()); | |
| 89 | + } | |
| 90 | + | |
| 91 | + | |
| 92 | + /** | |
| 93 | + * Override the inherited implementation of fill | |
| 94 | + * so that we can generate PostScript in user space | |
| 95 | + * rather than device space. | |
| 96 | + */ | |
| 97 | + public void fill(Shape s, Color color) { | |
| 98 | + deviceFill(s.getPathIterator(new AffineTransform()), color); | |
| 99 | + } | |
| 100 | + | |
| 101 | + /** | |
| 102 | + * Draws the text given by the specified string, using this | |
| 103 | + * graphics context's current font and color. The baseline of the | |
| 104 | + * first character is at position (<i>x</i>, <i>y</i>) in this | |
| 105 | + * graphics context's coordinate system. | |
| 106 | + * @param str the string to be drawn. | |
| 107 | + * @param x the <i>x</i> coordinate. | |
| 108 | + * @param y the <i>y</i> coordinate. | |
| 109 | + * @see java.awt.Graphics#drawBytes | |
| 110 | + * @see java.awt.Graphics#drawChars | |
| 111 | + * @since JDK1.0 | |
| 112 | + */ | |
| 113 | + public void drawString(String str, int x, int y) { | |
| 114 | + drawString(str, (float) x, (float) y); | |
| 115 | + } | |
| 116 | + | |
| 117 | + /** | |
| 118 | + * Renders the text specified by the specified <code>String</code>, | |
| 119 | + * using the current <code>Font</code> and <code>Paint</code> attributes | |
| 120 | + * in the <code>Graphics2D</code> context. | |
| 121 | + * The baseline of the first character is at position | |
| 122 | + * (<i>x</i>, <i>y</i>) in the User Space. | |
| 123 | + * The rendering attributes applied include the <code>Clip</code>, | |
| 124 | + * <code>Transform</code>, <code>Paint</code>, <code>Font</code> and | |
| 125 | + * <code>Composite</code> attributes. For characters in script systems | |
| 126 | + * such as Hebrew and Arabic, the glyphs can be rendered from right to | |
| 127 | + * left, in which case the coordinate supplied is the location of the | |
| 128 | + * leftmost character on the baseline. | |
| 129 | + * @param s the <code>String</code> to be rendered | |
| 130 | + * @param x, y the coordinates where the <code>String</code> | |
| 131 | + * should be rendered | |
| 132 | + * @see #setPaint | |
| 133 | + * @see java.awt.Graphics#setColor | |
| 134 | + * @see java.awt.Graphics#setFont | |
| 135 | + * @see #setTransform | |
| 136 | + * @see #setComposite | |
| 137 | + * @see #setClip | |
| 138 | + */ | |
| 139 | + public void drawString(String str, float x, float y) { | |
| 140 | + drawString(str, x, y, getFont(), getFontRenderContext(), 0f); | |
| 141 | + } | |
| 142 | + | |
| 143 | + | |
| 144 | + protected boolean canDrawStringToWidth() { | |
| 145 | + return true; | |
| 146 | + } | |
| 147 | + | |
| 148 | + protected int platformFontCount(Font font, String str) { | |
| 149 | + PSPrinterJob psPrinterJob = (PSPrinterJob) getPrinterJob(); | |
| 150 | + return psPrinterJob.platformFontCount(font, str); | |
| 151 | + } | |
| 152 | + | |
| 153 | + protected void drawString(String str, float x, float y, | |
| 154 | + Font font, FontRenderContext frc, float w) { | |
| 155 | + if (str.length() == 0) { | |
| 156 | + return; | |
| 157 | + } | |
| 158 | + | |
| 159 | + /* If the Font has layout attributes we need to delegate to TextLayout. | |
| 160 | + * TextLayout renders text as GlyphVectors. We try to print those | |
| 161 | + * using printer fonts - ie using Postscript text operators so | |
| 162 | + * we may be reinvoked. In that case the "!printingGlyphVector" test | |
| 163 | + * prevents us recursing and instead sends us into the body of the | |
| 164 | + * method where we can safely ignore layout attributes as those | |
| 165 | + * are already handled by TextLayout. | |
| 166 | + */ | |
| 167 | + if (font.hasLayoutAttributes() && !printingGlyphVector) { | |
| 168 | + TextLayout layout = new TextLayout(str, font, frc); | |
| 169 | + layout.draw(this, x, y); | |
| 170 | + return; | |
| 171 | + } | |
| 172 | + | |
| 173 | + Font oldFont = getFont(); | |
| 174 | + if (!oldFont.equals(font)) { | |
| 175 | + setFont(font); | |
| 176 | + } else { | |
| 177 | + oldFont = null; | |
| 178 | + } | |
| 179 | + | |
| 180 | + boolean drawnWithPS = false; | |
| 181 | + | |
| 182 | + float translateX = 0f, translateY = 0f; | |
| 183 | + boolean fontisTransformed = getFont().isTransformed(); | |
| 184 | + | |
| 185 | + if (fontisTransformed) { | |
| 186 | + AffineTransform fontTx = getFont().getTransform(); | |
| 187 | + int transformType = fontTx.getType(); | |
| 188 | + /* TYPE_TRANSLATION is a flag bit but we can do "==" here | |
| 189 | + * because we want to detect when its just that bit set and | |
| 190 | + * | |
| 191 | + */ | |
| 192 | + if (transformType == AffineTransform.TYPE_TRANSLATION) { | |
| 193 | + translateX = (float)(fontTx.getTranslateX()); | |
| 194 | + translateY = (float)(fontTx.getTranslateY()); | |
| 195 | + if (Math.abs(translateX) < 0.00001) translateX = 0f; | |
| 196 | + if (Math.abs(translateY) < 0.00001) translateY = 0f; | |
| 197 | + fontisTransformed = false; | |
| 198 | + } | |
| 199 | + } | |
| 200 | + | |
| 201 | + boolean directToPS = !fontisTransformed; | |
| 202 | + | |
| 203 | + if (!PSPrinterJob.shapeTextProp && directToPS) { | |
| 204 | + | |
| 205 | + PSPrinterJob psPrinterJob = (PSPrinterJob) getPrinterJob(); | |
| 206 | + if (psPrinterJob.setFont(getFont())) { | |
| 207 | + | |
| 208 | + /* Set the text color. | |
| 209 | + * We should not be in this shape printing path | |
| 210 | + * if the application is drawing with non-solid | |
| 211 | + * colors. We should be in the raster path. Because | |
| 212 | + * we are here in the shape path, the cast of the | |
| 213 | + * paint to a Color should be fine. | |
| 214 | + */ | |
| 215 | + try { | |
| 216 | + psPrinterJob.setColor((Color)getPaint()); | |
| 217 | + } catch (ClassCastException e) { | |
| 218 | + if (oldFont != null) { | |
| 219 | + setFont(oldFont); | |
| 220 | + } | |
| 221 | + throw new IllegalArgumentException( | |
| 222 | + "Expected a Color instance"); | |
| 223 | + } | |
| 224 | + | |
| 225 | + psPrinterJob.setTransform(getTransform()); | |
| 226 | + psPrinterJob.setClip(getClip()); | |
| 227 | + | |
| 228 | + drawnWithPS = psPrinterJob.textOut(this, str, | |
| 229 | + x+translateX, y+translateY, | |
| 230 | + font, frc, w); | |
| 231 | + } | |
| 232 | + } | |
| 233 | + | |
| 234 | + /* The text could not be converted directly to PS text | |
| 235 | + * calls so decompose the text into a shape. | |
| 236 | + */ | |
| 237 | + if (drawnWithPS == false) { | |
| 238 | + if (oldFont != null) { | |
| 239 | + setFont(oldFont); | |
| 240 | + oldFont = null; | |
| 241 | + } | |
| 242 | + super.drawString(str, x, y, font, frc, w); | |
| 243 | + } | |
| 244 | + | |
| 245 | + if (oldFont != null) { | |
| 246 | + setFont(oldFont); | |
| 247 | + } | |
| 248 | + } | |
| 249 | + | |
| 250 | + /** | |
| 251 | + * The various <code>drawImage()</code> methods for | |
| 252 | + * <code>WPathGraphics</code> are all decomposed | |
| 253 | + * into an invocation of <code>drawImageToPlatform</code>. | |
| 254 | + * The portion of the passed in image defined by | |
| 255 | + * <code>srcX, srcY, srcWidth, and srcHeight</code> | |
| 256 | + * is transformed by the supplied AffineTransform and | |
| 257 | + * drawn using PS to the printer context. | |
| 258 | + * | |
| 259 | + * @param img The image to be drawn. | |
| 260 | + * This method does nothing if <code>img</code> is null. | |
| 261 | + * @param xform Used to tranform the image before drawing. | |
| 262 | + * This can be null. | |
| 263 | + * @param bgcolor This color is drawn where the image has transparent | |
| 264 | + * pixels. If this parameter is null then the | |
| 265 | + * pixels already in the destination should show | |
| 266 | + * through. | |
| 267 | + * @param srcX With srcY this defines the upper-left corner | |
| 268 | + * of the portion of the image to be drawn. | |
| 269 | + * | |
| 270 | + * @param srcY With srcX this defines the upper-left corner | |
| 271 | + * of the portion of the image to be drawn. | |
| 272 | + * @param srcWidth The width of the portion of the image to | |
| 273 | + * be drawn. | |
| 274 | + * @param srcHeight The height of the portion of the image to | |
| 275 | + * be drawn. | |
| 276 | + * @param handlingTransparency if being recursively called to | |
| 277 | + * print opaque region of transparent image | |
| 278 | + */ | |
| 279 | + protected boolean drawImageToPlatform(Image image, AffineTransform xform, | |
| 280 | + Color bgcolor, | |
| 281 | + int srcX, int srcY, | |
| 282 | + int srcWidth, int srcHeight, | |
| 283 | + boolean handlingTransparency) { | |
| 284 | + | |
| 285 | + BufferedImage img = getBufferedImage(image); | |
| 286 | + if (img == null) { | |
| 287 | + return true; | |
| 288 | + } | |
| 289 | + | |
| 290 | + PSPrinterJob psPrinterJob = (PSPrinterJob) getPrinterJob(); | |
| 291 | + | |
| 292 | + /* The full transform to be applied to the image is the | |
| 293 | + * caller's transform concatenated on to the transform | |
| 294 | + * from user space to device space. If the caller didn't | |
| 295 | + * supply a transform then we just act as if they passed | |
| 296 | + * in the identify transform. | |
| 297 | + */ | |
| 298 | + AffineTransform fullTransform = getTransform(); | |
| 299 | + if (xform == null) { | |
| 300 | + xform = new AffineTransform(); | |
| 301 | + } | |
| 302 | + fullTransform.concatenate(xform); | |
| 303 | + | |
| 304 | + /* Split the full transform into a pair of | |
| 305 | + * transforms. The first transform holds effects | |
| 306 | + * such as rotation and shearing. The second transform | |
| 307 | + * is setup to hold only the scaling effects. | |
| 308 | + * These transforms are created such that a point, | |
| 309 | + * p, in user space, when transformed by 'fullTransform' | |
| 310 | + * lands in the same place as when it is transformed | |
| 311 | + * by 'rotTransform' and then 'scaleTransform'. | |
| 312 | + * | |
| 313 | + * The entire image transformation is not in Java in order | |
| 314 | + * to minimize the amount of memory needed in the VM. By | |
| 315 | + * dividing the transform in two, we rotate and shear | |
| 316 | + * the source image in its own space and only go to | |
| 317 | + * the, usually, larger, device space when we ask | |
| 318 | + * PostScript to perform the final scaling. | |
| 319 | + */ | |
| 320 | + double[] fullMatrix = new double[6]; | |
| 321 | + fullTransform.getMatrix(fullMatrix); | |
| 322 | + | |
| 323 | + /* Calculate the amount of scaling in the x | |
| 324 | + * and y directions. This scaling is computed by | |
| 325 | + * transforming a unit vector along each axis | |
| 326 | + * and computing the resulting magnitude. | |
| 327 | + * The computed values 'scaleX' and 'scaleY' | |
| 328 | + * represent the amount of scaling PS will be asked | |
| 329 | + * to perform. | |
| 330 | + * Clamp this to the device scale for better quality printing. | |
| 331 | + */ | |
| 332 | + Point2D.Float unitVectorX = new Point2D.Float(1, 0); | |
| 333 | + Point2D.Float unitVectorY = new Point2D.Float(0, 1); | |
| 334 | + fullTransform.deltaTransform(unitVectorX, unitVectorX); | |
| 335 | + fullTransform.deltaTransform(unitVectorY, unitVectorY); | |
| 336 | + | |
| 337 | + Point2D.Float origin = new Point2D.Float(0, 0); | |
| 338 | + double scaleX = unitVectorX.distance(origin); | |
| 339 | + double scaleY = unitVectorY.distance(origin); | |
| 340 | + | |
| 341 | + double devResX = psPrinterJob.getXRes(); | |
| 342 | + double devResY = psPrinterJob.getYRes(); | |
| 343 | + double devScaleX = devResX / DEFAULT_USER_RES; | |
| 344 | + double devScaleY = devResY / DEFAULT_USER_RES; | |
| 345 | + | |
| 346 | + /* check if rotated or sheared */ | |
| 347 | + int transformType = fullTransform.getType(); | |
| 348 | + boolean clampScale = ((transformType & | |
| 349 | + (AffineTransform.TYPE_GENERAL_ROTATION | | |
| 350 | + AffineTransform.TYPE_GENERAL_TRANSFORM)) != 0); | |
| 351 | + if (clampScale) { | |
| 352 | + if (scaleX > devScaleX) scaleX = devScaleX; | |
| 353 | + if (scaleY > devScaleY) scaleY = devScaleY; | |
| 354 | + } | |
| 355 | + | |
| 356 | + /* We do not need to draw anything if either scaling | |
| 357 | + * factor is zero. | |
| 358 | + */ | |
| 359 | + if (scaleX != 0 && scaleY != 0) { | |
| 360 | + | |
| 361 | + /* Here's the transformation we will do with Java2D, | |
| 362 | + */ | |
| 363 | + AffineTransform rotTransform = new AffineTransform( | |
| 364 | + fullMatrix[0] / scaleX, //m00 | |
| 365 | + fullMatrix[1] / scaleY, //m10 | |
| 366 | + fullMatrix[2] / scaleX, //m01 | |
| 367 | + fullMatrix[3] / scaleY, //m11 | |
| 368 | + fullMatrix[4] / scaleX, //m02 | |
| 369 | + fullMatrix[5] / scaleY); //m12 | |
| 370 | + | |
| 371 | + /* The scale transform is not used directly: we instead | |
| 372 | + * directly multiply by scaleX and scaleY. | |
| 373 | + * | |
| 374 | + * Conceptually here is what the scaleTransform is: | |
| 375 | + * | |
| 376 | + * AffineTransform scaleTransform = new AffineTransform( | |
| 377 | + * scaleX, //m00 | |
| 378 | + * 0, //m10 | |
| 379 | + * 0, //m01 | |
| 380 | + * scaleY, //m11 | |
| 381 | + * 0, //m02 | |
| 382 | + * 0); //m12 | |
| 383 | + */ | |
| 384 | + | |
| 385 | + /* Convert the image source's rectangle into the rotated | |
| 386 | + * and sheared space. Once there, we calculate a rectangle | |
| 387 | + * that encloses the resulting shape. It is this rectangle | |
| 388 | + * which defines the size of the BufferedImage we need to | |
| 389 | + * create to hold the transformed image. | |
| 390 | + */ | |
| 391 | + Rectangle2D.Float srcRect = new Rectangle2D.Float(srcX, srcY, | |
| 392 | + srcWidth, | |
| 393 | + srcHeight); | |
| 394 | + | |
| 395 | + Shape rotShape = rotTransform.createTransformedShape(srcRect); | |
| 396 | + Rectangle2D rotBounds = rotShape.getBounds2D(); | |
| 397 | + | |
| 398 | + /* add a fudge factor as some fp precision problems have | |
| 399 | + * been observed which caused pixels to be rounded down and | |
| 400 | + * out of the image. | |
| 401 | + */ | |
| 402 | + rotBounds.setRect(rotBounds.getX(), rotBounds.getY(), | |
| 403 | + rotBounds.getWidth()+0.001, | |
| 404 | + rotBounds.getHeight()+0.001); | |
| 405 | + | |
| 406 | + int boundsWidth = (int) rotBounds.getWidth(); | |
| 407 | + int boundsHeight = (int) rotBounds.getHeight(); | |
| 408 | + | |
| 409 | + if (boundsWidth > 0 && boundsHeight > 0) { | |
| 410 | + | |
| 411 | + | |
| 412 | + /* If the image has transparent or semi-transparent | |
| 413 | + * pixels then we'll have the application re-render | |
| 414 | + * the portion of the page covered by the image. | |
| 415 | + * This will be done in a later call to print using the | |
| 416 | + * saved graphics state. | |
| 417 | + * However several special cases can be handled otherwise: | |
| 418 | + * - bitmask transparency with a solid background colour | |
| 419 | + * - images which have transparency color models but no | |
| 420 | + * transparent pixels | |
| 421 | + * - images with bitmask transparency and an IndexColorModel | |
| 422 | + * (the common transparent GIF case) can be handled by | |
| 423 | + * rendering just the opaque pixels. | |
| 424 | + */ | |
| 425 | + boolean drawOpaque = true; | |
| 426 | + if (!handlingTransparency && hasTransparentPixels(img)) { | |
| 427 | + drawOpaque = false; | |
| 428 | + if (isBitmaskTransparency(img)) { | |
| 429 | + if (bgcolor == null) { | |
| 430 | + if (drawBitmaskImage(img, xform, bgcolor, | |
| 431 | + srcX, srcY, | |
| 432 | + srcWidth, srcHeight)) { | |
| 433 | + // image drawn, just return. | |
| 434 | + return true; | |
| 435 | + } | |
| 436 | + } else if (bgcolor.getTransparency() | |
| 437 | + == Transparency.OPAQUE) { | |
| 438 | + drawOpaque = true; | |
| 439 | + } | |
| 440 | + } | |
| 441 | + if (!canDoRedraws()) { | |
| 442 | + drawOpaque = true; | |
| 443 | + } | |
| 444 | + } else { | |
| 445 | + // if there's no transparent pixels there's no need | |
| 446 | + // for a background colour. This can avoid edge artifacts | |
| 447 | + // in rotation cases. | |
| 448 | + bgcolor = null; | |
| 449 | + } | |
| 450 | + // if src region extends beyond the image, the "opaque" path | |
| 451 | + // may blit b/g colour (including white) where it shoudn't. | |
| 452 | + if ((srcX+srcWidth > img.getWidth(null) || | |
| 453 | + srcY+srcHeight > img.getHeight(null)) | |
| 454 | + && canDoRedraws()) { | |
| 455 | + drawOpaque = false; | |
| 456 | + } | |
| 457 | + if (drawOpaque == false) { | |
| 458 | + | |
| 459 | + fullTransform.getMatrix(fullMatrix); | |
| 460 | + AffineTransform tx = | |
| 461 | + new AffineTransform( | |
| 462 | + fullMatrix[0] / devScaleX, //m00 | |
| 463 | + fullMatrix[1] / devScaleY, //m10 | |
| 464 | + fullMatrix[2] / devScaleX, //m01 | |
| 465 | + fullMatrix[3] / devScaleY, //m11 | |
| 466 | + fullMatrix[4] / devScaleX, //m02 | |
| 467 | + fullMatrix[5] / devScaleY); //m12 | |
| 468 | + | |
| 469 | + Rectangle2D.Float rect = | |
| 470 | + new Rectangle2D.Float(srcX, srcY, srcWidth, srcHeight); | |
| 471 | + | |
| 472 | + Shape shape = fullTransform.createTransformedShape(rect); | |
| 473 | + // Region isn't user space because its potentially | |
| 474 | + // been rotated for landscape. | |
| 475 | + Rectangle2D region = shape.getBounds2D(); | |
| 476 | + | |
| 477 | + region.setRect(region.getX(), region.getY(), | |
| 478 | + region.getWidth()+0.001, | |
| 479 | + region.getHeight()+0.001); | |
| 480 | + | |
| 481 | + // Try to limit the amount of memory used to 8Mb, so | |
| 482 | + // if at device resolution this exceeds a certain | |
| 483 | + // image size then scale down the region to fit in | |
| 484 | + // that memory, but never to less than 72 dpi. | |
| 485 | + | |
| 486 | + int w = (int)region.getWidth(); | |
| 487 | + int h = (int)region.getHeight(); | |
| 488 | + int nbytes = w * h * 3; | |
| 489 | + int maxBytes = 8 * 1024 * 1024; | |
| 490 | + double origDpi = (devResX < devResY) ? devResX : devResY; | |
| 491 | + int dpi = (int)origDpi; | |
| 492 | + double scaleFactor = 1; | |
| 493 | + | |
| 494 | + double maxSFX = w/(double)boundsWidth; | |
| 495 | + double maxSFY = h/(double)boundsHeight; | |
| 496 | + double maxSF = (maxSFX > maxSFY) ? maxSFY : maxSFX; | |
| 497 | + int minDpi = (int)(dpi/maxSF); | |
| 498 | + if (minDpi < DEFAULT_USER_RES) minDpi = DEFAULT_USER_RES; | |
| 499 | + | |
| 500 | + while (nbytes > maxBytes && dpi > minDpi) { | |
| 501 | + scaleFactor *= 2; | |
| 502 | + dpi /= 2; | |
| 503 | + nbytes /= 4; | |
| 504 | + } | |
| 505 | + if (dpi < minDpi) { | |
| 506 | + scaleFactor = (origDpi / minDpi); | |
| 507 | + } | |
| 508 | + | |
| 509 | + region.setRect(region.getX()/scaleFactor, | |
| 510 | + region.getY()/scaleFactor, | |
| 511 | + region.getWidth()/scaleFactor, | |
| 512 | + region.getHeight()/scaleFactor); | |
| 513 | + | |
| 514 | + /* | |
| 515 | + * We need to have the clip as part of the saved state, | |
| 516 | + * either directly, or all the components that are | |
| 517 | + * needed to reconstitute it (image source area, | |
| 518 | + * image transform and current graphics transform). | |
| 519 | + * The clip is described in user space, so we need to | |
| 520 | + * save the current graphics transform anyway so just | |
| 521 | + * save these two. | |
| 522 | + */ | |
| 523 | + psPrinterJob.saveState(getTransform(), getClip(), | |
| 524 | + region, scaleFactor, scaleFactor); | |
| 525 | + return true; | |
| 526 | + | |
| 527 | + /* The image can be rendered directly by PS so we | |
| 528 | + * copy it into a BufferedImage (this takes care of | |
| 529 | + * ColorSpace and BufferedImageOp issues) and then | |
| 530 | + * send that to PS. | |
| 531 | + */ | |
| 532 | + } else { | |
| 533 | + | |
| 534 | + /* Create a buffered image big enough to hold the portion | |
| 535 | + * of the source image being printed. | |
| 536 | + */ | |
| 537 | + BufferedImage deepImage = new BufferedImage( | |
| 538 | + (int) rotBounds.getWidth(), | |
| 539 | + (int) rotBounds.getHeight(), | |
| 540 | + BufferedImage.TYPE_3BYTE_BGR); | |
| 541 | + | |
| 542 | + /* Setup a Graphics2D on to the BufferedImage so that the | |
| 543 | + * source image when copied, lands within the image buffer. | |
| 544 | + */ | |
| 545 | + Graphics2D imageGraphics = deepImage.createGraphics(); | |
| 546 | + imageGraphics.clipRect(0, 0, | |
| 547 | + deepImage.getWidth(), | |
| 548 | + deepImage.getHeight()); | |
| 549 | + | |
| 550 | + imageGraphics.translate(-rotBounds.getX(), | |
| 551 | + -rotBounds.getY()); | |
| 552 | + imageGraphics.transform(rotTransform); | |
| 553 | + | |
| 554 | + /* Fill the BufferedImage either with the caller supplied | |
| 555 | + * color, 'bgColor' or, if null, with white. | |
| 556 | + */ | |
| 557 | + if (bgcolor == null) { | |
| 558 | + bgcolor = Color.white; | |
| 559 | + } | |
| 560 | + | |
| 561 | + /* REMIND: no need to use scaling here. */ | |
| 562 | + imageGraphics.drawImage(img, | |
| 563 | + srcX, srcY, | |
| 564 | + srcX + srcWidth, srcY + srcHeight, | |
| 565 | + srcX, srcY, | |
| 566 | + srcX + srcWidth, srcY + srcHeight, | |
| 567 | + bgcolor, null); | |
| 568 | + | |
| 569 | + /* In PSPrinterJob images are printed in device space | |
| 570 | + * and therefore we need to set a device space clip. | |
| 571 | + * FIX: this is an overly tight coupling of these | |
| 572 | + * two classes. | |
| 573 | + * The temporary clip set needs to be an intersection | |
| 574 | + * with the previous user clip. | |
| 575 | + * REMIND: two xfms may lose accuracy in clip path. | |
| 576 | + */ | |
| 577 | + Shape holdClip = getClip(); | |
| 578 | + Shape oldClip = | |
| 579 | + getTransform().createTransformedShape(holdClip); | |
| 580 | + AffineTransform sat = AffineTransform.getScaleInstance( | |
| 581 | + scaleX, scaleY); | |
| 582 | + Shape imgClip = sat.createTransformedShape(rotShape); | |
| 583 | + Area imgArea = new Area(imgClip); | |
| 584 | + Area oldArea = new Area(oldClip); | |
| 585 | + imgArea.intersect(oldArea); | |
| 586 | + psPrinterJob.setClip(imgArea); | |
| 587 | + | |
| 588 | + /* Scale the bounding rectangle by the scale transform. | |
| 589 | + * Because the scaling transform has only x and y | |
| 590 | + * scaling components it is equivalent to multiply | |
| 591 | + * the x components of the bounding rectangle by | |
| 592 | + * the x scaling factor and to multiply the y components | |
| 593 | + * by the y scaling factor. | |
| 594 | + */ | |
| 595 | + Rectangle2D.Float scaledBounds | |
| 596 | + = new Rectangle2D.Float( | |
| 597 | + (float) (rotBounds.getX() * scaleX), | |
| 598 | + (float) (rotBounds.getY() * scaleY), | |
| 599 | + (float) (rotBounds.getWidth() * scaleX), | |
| 600 | + (float) (rotBounds.getHeight() * scaleY)); | |
| 601 | + | |
| 602 | + | |
| 603 | + /* Pull the raster data from the buffered image | |
| 604 | + * and pass it along to PS. | |
| 605 | + */ | |
| 606 | + ByteComponentRaster tile = | |
| 607 | + (ByteComponentRaster)deepImage.getRaster(); | |
| 608 | + | |
| 609 | + psPrinterJob.drawImageBGR(tile.getDataStorage(), | |
| 610 | + scaledBounds.x, scaledBounds.y, | |
| 611 | + (float)Math.rint(scaledBounds.width+0.5), | |
| 612 | + (float)Math.rint(scaledBounds.height+0.5), | |
| 613 | + 0f, 0f, | |
| 614 | + deepImage.getWidth(), deepImage.getHeight(), | |
| 615 | + deepImage.getWidth(), deepImage.getHeight()); | |
| 616 | + | |
| 617 | + /* Reset the device clip to match user clip */ | |
| 618 | + psPrinterJob.setClip( | |
| 619 | + getTransform().createTransformedShape(holdClip)); | |
| 620 | + | |
| 621 | + | |
| 622 | + imageGraphics.dispose(); | |
| 623 | + } | |
| 624 | + | |
| 625 | + } | |
| 626 | + } | |
| 627 | + | |
| 628 | + return true; | |
| 629 | + } | |
| 630 | + | |
| 631 | + /** Redraw a rectanglular area using a proxy graphics | |
| 632 | + * To do this we need to know the rectangular area to redraw and | |
| 633 | + * the transform & clip in effect at the time of the original drawImage | |
| 634 | + * | |
| 635 | + */ | |
| 636 | + | |
| 637 | + public void redrawRegion(Rectangle2D region, double scaleX, double scaleY, | |
| 638 | + Shape savedClip, AffineTransform savedTransform) | |
| 639 | + | |
| 640 | + throws PrinterException { | |
| 641 | + | |
| 642 | + PSPrinterJob psPrinterJob = (PSPrinterJob)getPrinterJob(); | |
| 643 | + Printable painter = getPrintable(); | |
| 644 | + PageFormat pageFormat = getPageFormat(); | |
| 645 | + int pageIndex = getPageIndex(); | |
| 646 | + | |
| 647 | + /* Create a buffered image big enough to hold the portion | |
| 648 | + * of the source image being printed. | |
| 649 | + */ | |
| 650 | + BufferedImage deepImage = new BufferedImage( | |
| 651 | + (int) region.getWidth(), | |
| 652 | + (int) region.getHeight(), | |
| 653 | + BufferedImage.TYPE_3BYTE_BGR); | |
| 654 | + | |
| 655 | + /* Get a graphics for the application to render into. | |
| 656 | + * We initialize the buffer to white in order to | |
| 657 | + * match the paper and then we shift the BufferedImage | |
| 658 | + * so that it covers the area on the page where the | |
| 659 | + * caller's Image will be drawn. | |
| 660 | + */ | |
| 661 | + Graphics2D g = deepImage.createGraphics(); | |
| 662 | + ProxyGraphics2D proxy = new ProxyGraphics2D(g, psPrinterJob); | |
| 663 | + proxy.setColor(Color.white); | |
| 664 | + proxy.fillRect(0, 0, deepImage.getWidth(), deepImage.getHeight()); | |
| 665 | + proxy.clipRect(0, 0, deepImage.getWidth(), deepImage.getHeight()); | |
| 666 | + | |
| 667 | + proxy.translate(-region.getX(), -region.getY()); | |
| 668 | + | |
| 669 | + /* Calculate the resolution of the source image. | |
| 670 | + */ | |
| 671 | + float sourceResX = (float)(psPrinterJob.getXRes() / scaleX); | |
| 672 | + float sourceResY = (float)(psPrinterJob.getYRes() / scaleY); | |
| 673 | + | |
| 674 | + /* The application expects to see user space at 72 dpi. | |
| 675 | + * so change user space from image source resolution to | |
| 676 | + * 72 dpi. | |
| 677 | + */ | |
| 678 | + proxy.scale(sourceResX / DEFAULT_USER_RES, | |
| 679 | + sourceResY / DEFAULT_USER_RES); | |
| 680 | + proxy.translate( | |
| 681 | + -psPrinterJob.getPhysicalPrintableX(pageFormat.getPaper()) | |
| 682 | + / psPrinterJob.getXRes() * DEFAULT_USER_RES, | |
| 683 | + -psPrinterJob.getPhysicalPrintableY(pageFormat.getPaper()) | |
| 684 | + / psPrinterJob.getYRes() * DEFAULT_USER_RES); | |
| 685 | + /* NB User space now has to be at 72 dpi for this calc to be correct */ | |
| 686 | + proxy.transform(new AffineTransform(getPageFormat().getMatrix())); | |
| 687 | + | |
| 688 | + proxy.setPaint(Color.black); | |
| 689 | + | |
| 690 | + painter.print(proxy, pageFormat, pageIndex); | |
| 691 | + | |
| 692 | + g.dispose(); | |
| 693 | + | |
| 694 | + /* In PSPrinterJob images are printed in device space | |
| 695 | + * and therefore we need to set a device space clip. | |
| 696 | + */ | |
| 697 | + psPrinterJob.setClip(savedTransform.createTransformedShape(savedClip)); | |
| 698 | + | |
| 699 | + | |
| 700 | + /* Scale the bounding rectangle by the scale transform. | |
| 701 | + * Because the scaling transform has only x and y | |
| 702 | + * scaling components it is equivalent to multiply | |
| 703 | + * the x components of the bounding rectangle by | |
| 704 | + * the x scaling factor and to multiply the y components | |
| 705 | + * by the y scaling factor. | |
| 706 | + */ | |
| 707 | + Rectangle2D.Float scaledBounds | |
| 708 | + = new Rectangle2D.Float( | |
| 709 | + (float) (region.getX() * scaleX), | |
| 710 | + (float) (region.getY() * scaleY), | |
| 711 | + (float) (region.getWidth() * scaleX), | |
| 712 | + (float) (region.getHeight() * scaleY)); | |
| 713 | + | |
| 714 | + | |
| 715 | + /* Pull the raster data from the buffered image | |
| 716 | + * and pass it along to PS. | |
| 717 | + */ | |
| 718 | + ByteComponentRaster tile = (ByteComponentRaster)deepImage.getRaster(); | |
| 719 | + | |
| 720 | + psPrinterJob.drawImageBGR(tile.getDataStorage(), | |
| 721 | + scaledBounds.x, scaledBounds.y, | |
| 722 | + scaledBounds.width, | |
| 723 | + scaledBounds.height, | |
| 724 | + 0f, 0f, | |
| 725 | + deepImage.getWidth(), deepImage.getHeight(), | |
| 726 | + deepImage.getWidth(), deepImage.getHeight()); | |
| 727 | + | |
| 728 | + | |
| 729 | + } | |
| 730 | + | |
| 731 | + | |
| 732 | + /* | |
| 733 | + * Fill the path defined by <code>pathIter</code> | |
| 734 | + * with the specified color. | |
| 735 | + * The path is provided in current user space. | |
| 736 | + */ | |
| 737 | + protected void deviceFill(PathIterator pathIter, Color color) { | |
| 738 | + | |
| 739 | + PSPrinterJob psPrinterJob = (PSPrinterJob) getPrinterJob(); | |
| 740 | + psPrinterJob.deviceFill(pathIter, color, getTransform(), getClip()); | |
| 741 | + } | |
| 742 | + | |
| 743 | + /* | |
| 744 | + * Draw the bounding rectangle using path by calling draw() | |
| 745 | + * function and passing a rectangle shape. | |
| 746 | + */ | |
| 747 | + protected void deviceFrameRect(int x, int y, int width, int height, | |
| 748 | + Color color) { | |
| 749 | + | |
| 750 | + draw(new Rectangle2D.Float(x, y, width, height)); | |
| 751 | + } | |
| 752 | + | |
| 753 | + /* | |
| 754 | + * Draw a line using path by calling draw() function and passing | |
| 755 | + * a line shape. | |
| 756 | + */ | |
| 757 | + protected void deviceDrawLine(int xBegin, int yBegin, | |
| 758 | + int xEnd, int yEnd, Color color) { | |
| 759 | + | |
| 760 | + draw(new Line2D.Float(xBegin, yBegin, xEnd, yEnd)); | |
| 761 | + } | |
| 762 | + | |
| 763 | + /* | |
| 764 | + * Fill the rectangle with the specified color by calling fill(). | |
| 765 | + */ | |
| 766 | + protected void deviceFillRect(int x, int y, int width, int height, | |
| 767 | + Color color) { | |
| 768 | + fill(new Rectangle2D.Float(x, y, width, height)); | |
| 769 | + } | |
| 770 | + | |
| 771 | + | |
| 772 | + /* | |
| 773 | + * This method should not be invoked by PSPathGraphics. | |
| 774 | + * FIX: Rework PathGraphics so that this method is | |
| 775 | + * not an abstract method there. | |
| 776 | + */ | |
| 777 | + protected void deviceClip(PathIterator pathIter) { | |
| 778 | + } | |
| 779 | + | |
| 780 | +} | |