Showing the changes to java/pkg/sun/font/GraphicComponent.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,376 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 2005, 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 | +/* | |
| 27 | + * (C) Copyright IBM Corp. 1998-2003, All Rights Reserved | |
| 28 | + * | |
| 29 | + */ | |
| 30 | + | |
| 31 | +package sun.font; | |
| 32 | + | |
| 33 | +import java.awt.Font; | |
| 34 | +import java.awt.Graphics2D; | |
| 35 | +import java.awt.Rectangle; | |
| 36 | +import java.awt.Shape; | |
| 37 | +import java.awt.font.FontRenderContext; | |
| 38 | +import java.awt.font.LineMetrics; | |
| 39 | +import java.awt.font.GraphicAttribute; | |
| 40 | +import java.awt.font.GlyphJustificationInfo; | |
| 41 | +import java.awt.geom.AffineTransform; | |
| 42 | +import java.awt.geom.GeneralPath; | |
| 43 | +import java.awt.geom.Rectangle2D; | |
| 44 | +import java.text.Bidi; | |
| 45 | +import java.util.Map; | |
| 46 | + | |
| 47 | +public final class GraphicComponent implements TextLineComponent, | |
| 48 | + Decoration.Label { | |
| 49 | + | |
| 50 | + public static final float GRAPHIC_LEADING = 2; | |
| 51 | + | |
| 52 | + private GraphicAttribute graphic; | |
| 53 | + private int graphicCount; | |
| 54 | + private int[] charsLtoV; // possibly null | |
| 55 | + private byte[] levels; // possibly null | |
| 56 | + | |
| 57 | + // evaluated in computeVisualBounds | |
| 58 | + private Rectangle2D visualBounds = null; | |
| 59 | + | |
| 60 | + // used everywhere so we'll cache it | |
| 61 | + private float graphicAdvance; | |
| 62 | + | |
| 63 | + private AffineTransform baseTx; | |
| 64 | + | |
| 65 | + private CoreMetrics cm; | |
| 66 | + private Decoration decorator; | |
| 67 | + | |
| 68 | + | |
| 69 | + /** | |
| 70 | + * Create a new GraphicComponent. start and limit are indices | |
| 71 | + * into charLtoV and levels. charsLtoV and levels may be adopted. | |
| 72 | + */ | |
| 73 | + public GraphicComponent(GraphicAttribute graphic, | |
| 74 | + Decoration decorator, | |
| 75 | + int[] charsLtoV, | |
| 76 | + byte[] levels, | |
| 77 | + int start, | |
| 78 | + int limit, | |
| 79 | + AffineTransform baseTx) { | |
| 80 | + | |
| 81 | + if (limit <= start) { | |
| 82 | + throw new IllegalArgumentException("0 or negative length in GraphicComponent"); | |
| 83 | + } | |
| 84 | + this.graphic = graphic; | |
| 85 | + this.graphicAdvance = graphic.getAdvance(); | |
| 86 | + this.decorator = decorator; | |
| 87 | + this.cm = createCoreMetrics(graphic); | |
| 88 | + this.baseTx = baseTx; | |
| 89 | + | |
| 90 | + initLocalOrdering(charsLtoV, levels, start, limit); | |
| 91 | + } | |
| 92 | + | |
| 93 | + private GraphicComponent(GraphicComponent parent, int start, int limit, int dir) { | |
| 94 | + | |
| 95 | + this.graphic = parent.graphic; | |
| 96 | + this.graphicAdvance = parent.graphicAdvance; | |
| 97 | + this.decorator = parent.decorator; | |
| 98 | + this.cm = parent.cm; | |
| 99 | + this.baseTx = parent.baseTx; | |
| 100 | + | |
| 101 | + int[] charsLtoV = null; | |
| 102 | + byte[] levels = null; | |
| 103 | + | |
| 104 | + if (dir == UNCHANGED) { | |
| 105 | + charsLtoV = parent.charsLtoV; | |
| 106 | + levels = parent.levels; | |
| 107 | + } | |
| 108 | + else if (dir == LEFT_TO_RIGHT || dir == RIGHT_TO_LEFT) { | |
| 109 | + limit -= start; | |
| 110 | + start = 0; | |
| 111 | + if (dir == RIGHT_TO_LEFT) { | |
| 112 | + charsLtoV = new int[limit]; | |
| 113 | + levels = new byte[limit]; | |
| 114 | + for (int i=0; i < limit; i++) { | |
| 115 | + charsLtoV[i] = limit-i-1; | |
| 116 | + levels[i] = (byte) 1; | |
| 117 | + } | |
| 118 | + } | |
| 119 | + } | |
| 120 | + else { | |
| 121 | + throw new IllegalArgumentException("Invalid direction flag"); | |
| 122 | + } | |
| 123 | + | |
| 124 | + initLocalOrdering(charsLtoV, levels, start, limit); | |
| 125 | + } | |
| 126 | + | |
| 127 | + /** | |
| 128 | + * Initialize graphicCount, also charsLtoV and levels arrays. | |
| 129 | + */ | |
| 130 | + private void initLocalOrdering(int[] charsLtoV, | |
| 131 | + byte[] levels, | |
| 132 | + int start, | |
| 133 | + int limit) { | |
| 134 | + | |
| 135 | + this.graphicCount = limit - start; // todo: should be codepoints? | |
| 136 | + | |
| 137 | + if (charsLtoV == null || charsLtoV.length == graphicCount) { | |
| 138 | + this.charsLtoV = charsLtoV; | |
| 139 | + } | |
| 140 | + else { | |
| 141 | + this.charsLtoV = BidiUtils.createNormalizedMap(charsLtoV, levels, start, limit); | |
| 142 | + } | |
| 143 | + | |
| 144 | + if (levels == null || levels.length == graphicCount) { | |
| 145 | + this.levels = levels; | |
| 146 | + } | |
| 147 | + else { | |
| 148 | + this.levels = new byte[graphicCount]; | |
| 149 | + System.arraycopy(levels, start, this.levels, 0, graphicCount); | |
| 150 | + } | |
| 151 | + } | |
| 152 | + | |
| 153 | + public boolean isSimple() { | |
| 154 | + return false; | |
| 155 | + } | |
| 156 | + | |
| 157 | + public Rectangle getPixelBounds(FontRenderContext frc, float x, float y) { | |
| 158 | + throw new InternalError("do not call if isSimple returns false"); | |
| 159 | + } | |
| 160 | + | |
| 161 | + public Rectangle2D handleGetVisualBounds() { | |
| 162 | + | |
| 163 | + Rectangle2D bounds = graphic.getBounds(); | |
| 164 | + | |
| 165 | + float width = (float) bounds.getWidth() + | |
| 166 | + graphicAdvance * (graphicCount-1); | |
| 167 | + | |
| 168 | + return new Rectangle2D.Float((float) bounds.getX(), | |
| 169 | + (float) bounds.getY(), | |
| 170 | + width, | |
| 171 | + (float) bounds.getHeight()); | |
| 172 | + } | |
| 173 | + | |
| 174 | + public CoreMetrics getCoreMetrics() { | |
| 175 | + return cm; | |
| 176 | + } | |
| 177 | + | |
| 178 | + public static CoreMetrics createCoreMetrics(GraphicAttribute graphic) { | |
| 179 | + return new CoreMetrics(graphic.getAscent(), | |
| 180 | + graphic.getDescent(), | |
| 181 | + GRAPHIC_LEADING, | |
| 182 | + graphic.getAscent() + graphic.getDescent() + GRAPHIC_LEADING, | |
| 183 | + graphic.getAlignment(), | |
| 184 | + new float[] { 0, -graphic.getAscent() / 2, -graphic.getAscent() }, | |
| 185 | + -graphic.getAscent() / 2, | |
| 186 | + graphic.getAscent() / 12, | |
| 187 | + graphic.getDescent() / 3, | |
| 188 | + graphic.getAscent() / 12, | |
| 189 | + 0, // ss offset | |
| 190 | + 0); // italic angle -- need api for this | |
| 191 | + } | |
| 192 | + | |
| 193 | + public float getItalicAngle() { | |
| 194 | + | |
| 195 | + return 0; | |
| 196 | + } | |
| 197 | + | |
| 198 | + public Rectangle2D getVisualBounds() { | |
| 199 | + | |
| 200 | + if (visualBounds == null) { | |
| 201 | + visualBounds = decorator.getVisualBounds(this); | |
| 202 | + } | |
| 203 | + Rectangle2D.Float bounds = new Rectangle2D.Float(); | |
| 204 | + bounds.setRect(visualBounds); | |
| 205 | + return bounds; | |
| 206 | + } | |
| 207 | + | |
| 208 | + public Shape handleGetOutline(float x, float y) { | |
| 209 | + double[] matrix = { 1, 0, 0, 1, x, y }; | |
| 210 | + | |
| 211 | + if (graphicCount == 1) { | |
| 212 | + AffineTransform tx = new AffineTransform(matrix); | |
| 213 | + return graphic.getOutline(tx); | |
| 214 | + } | |
| 215 | + | |
| 216 | + GeneralPath gp = new GeneralPath(); | |
| 217 | + for (int i = 0; i < graphicCount; ++i) { | |
| 218 | + AffineTransform tx = new AffineTransform(matrix); | |
| 219 | + gp.append(graphic.getOutline(tx), false); | |
| 220 | + matrix[4] += graphicAdvance; | |
| 221 | + } | |
| 222 | + | |
| 223 | + return gp; | |
| 224 | + } | |
| 225 | + | |
| 226 | + public AffineTransform getBaselineTransform() { | |
| 227 | + return baseTx; | |
| 228 | + } | |
| 229 | + | |
| 230 | + public Shape getOutline(float x, float y) { | |
| 231 | + | |
| 232 | + return decorator.getOutline(this, x, y); | |
| 233 | + } | |
| 234 | + | |
| 235 | + public void handleDraw(Graphics2D g2d, float x, float y) { | |
| 236 | + | |
| 237 | + for (int i=0; i < graphicCount; i++) { | |
| 238 | + | |
| 239 | + graphic.draw(g2d, x, y); | |
| 240 | + x += graphicAdvance; | |
| 241 | + } | |
| 242 | + } | |
| 243 | + | |
| 244 | + public void draw(Graphics2D g2d, float x, float y) { | |
| 245 | + | |
| 246 | + decorator.drawTextAndDecorations(this, g2d, x, y); | |
| 247 | + } | |
| 248 | + | |
| 249 | + public Rectangle2D getCharVisualBounds(int index) { | |
| 250 | + | |
| 251 | + return decorator.getCharVisualBounds(this, index); | |
| 252 | + } | |
| 253 | + | |
| 254 | + public int getNumCharacters() { | |
| 255 | + | |
| 256 | + return graphicCount; | |
| 257 | + } | |
| 258 | + | |
| 259 | + public float getCharX(int index) { | |
| 260 | + | |
| 261 | + int visIndex = charsLtoV==null? index : charsLtoV[index]; | |
| 262 | + return graphicAdvance * visIndex; | |
| 263 | + } | |
| 264 | + | |
| 265 | + public float getCharY(int index) { | |
| 266 | + | |
| 267 | + return 0; | |
| 268 | + } | |
| 269 | + | |
| 270 | + public float getCharAdvance(int index) { | |
| 271 | + | |
| 272 | + return graphicAdvance; | |
| 273 | + } | |
| 274 | + | |
| 275 | + public boolean caretAtOffsetIsValid(int index) { | |
| 276 | + | |
| 277 | + return true; | |
| 278 | + } | |
| 279 | + | |
| 280 | + public Rectangle2D handleGetCharVisualBounds(int index) { | |
| 281 | + | |
| 282 | + Rectangle2D bounds = graphic.getBounds(); | |
| 283 | + // don't modify their rectangle, just in case they don't copy | |
| 284 | + | |
| 285 | + Rectangle2D.Float charBounds = new Rectangle2D.Float(); | |
| 286 | + charBounds.setRect(bounds); | |
| 287 | + charBounds.x += graphicAdvance * index; | |
| 288 | + | |
| 289 | + return charBounds; | |
| 290 | + } | |
| 291 | + | |
| 292 | + // measures characters in context, in logical order | |
| 293 | + public int getLineBreakIndex(int start, float width) { | |
| 294 | + | |
| 295 | + int index = (int) (width / graphicAdvance); | |
| 296 | + if (index > graphicCount - start) { | |
| 297 | + index = graphicCount - start; | |
| 298 | + } | |
| 299 | + return index; | |
| 300 | + } | |
| 301 | + | |
| 302 | + // measures characters in context, in logical order | |
| 303 | + public float getAdvanceBetween(int start, int limit) { | |
| 304 | + | |
| 305 | + return graphicAdvance * (limit - start); | |
| 306 | + } | |
| 307 | + | |
| 308 | + public Rectangle2D getLogicalBounds() { | |
| 309 | + | |
| 310 | + float left = 0; | |
| 311 | + float top = -cm.ascent; | |
| 312 | + float width = graphicAdvance * graphicCount; | |
| 313 | + float height = cm.descent - top; | |
| 314 | + | |
| 315 | + return new Rectangle2D.Float(left, top, width, height); | |
| 316 | + } | |
| 317 | + | |
| 318 | + public float getAdvance() { | |
| 319 | + return graphicAdvance * graphicCount; | |
| 320 | + } | |
| 321 | + | |
| 322 | + public Rectangle2D getItalicBounds() { | |
| 323 | + return getLogicalBounds(); | |
| 324 | + } | |
| 325 | + | |
| 326 | + public TextLineComponent getSubset(int start, int limit, int dir) { | |
| 327 | + | |
| 328 | + if (start < 0 || limit > graphicCount || start >= limit) { | |
| 329 | + throw new IllegalArgumentException("Invalid range. start=" | |
| 330 | + +start+"; limit="+limit); | |
| 331 | + } | |
| 332 | + | |
| 333 | + if (start == 0 && limit == graphicCount && dir == UNCHANGED) { | |
| 334 | + return this; | |
| 335 | + } | |
| 336 | + | |
| 337 | + return new GraphicComponent(this, start, limit, dir); | |
| 338 | + } | |
| 339 | + | |
| 340 | + public String toString() { | |
| 341 | + | |
| 342 | + return "[graphic=" + graphic + ":count=" + getNumCharacters() + "]"; | |
| 343 | + } | |
| 344 | + | |
| 345 | + /** | |
| 346 | + * Return the number of justification records this uses. | |
| 347 | + */ | |
| 348 | + public int getNumJustificationInfos() { | |
| 349 | + return 0; | |
| 350 | + } | |
| 351 | + | |
| 352 | + /** | |
| 353 | + * Return GlyphJustificationInfo objects for the characters between | |
| 354 | + * charStart and charLimit, starting at offset infoStart. Infos | |
| 355 | + * will be in visual order. All positions between infoStart and | |
| 356 | + * getNumJustificationInfos will be set. If a position corresponds | |
| 357 | + * to a character outside the provided range, it is set to null. | |
| 358 | + */ | |
| 359 | + public void getJustificationInfos(GlyphJustificationInfo[] infos, int infoStart, int charStart, int charLimit) { | |
| 360 | + } | |
| 361 | + | |
| 362 | + /** | |
| 363 | + * Apply deltas to the data in this component, starting at offset | |
| 364 | + * deltaStart, and return the new component. There are two floats | |
| 365 | + * for each justification info, for a total of 2 * getNumJustificationInfos. | |
| 366 | + * The first delta is the left adjustment, the second is the right | |
| 367 | + * adjustment. | |
| 368 | + * <p> | |
| 369 | + * If flags[0] is true on entry, rejustification is allowed. If | |
| 370 | + * the new component requires rejustification (ligatures were | |
| 371 | + * formed or split), flags[0] will be set on exit. | |
| 372 | + */ | |
| 373 | + public TextLineComponent applyJustificationDeltas(float[] deltas, int deltaStart, boolean[] flags) { | |
| 374 | + return this; | |
| 375 | + } | |
| 376 | +} | |