1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.graphics; 18 19 import android.text.GraphicsOperations; 20 import android.text.SpannableString; 21 import android.text.SpannedString; 22 import android.text.TextUtils; 23 24 import java.util.Locale; 25 26 /** 27 * The Paint class holds the style and color information about how to draw 28 * geometries, text and bitmaps. 29 */ 30 public class Paint { 31 32 /** 33 * @hide 34 */ 35 public int mNativePaint; 36 37 private ColorFilter mColorFilter; 38 private MaskFilter mMaskFilter; 39 private PathEffect mPathEffect; 40 private Rasterizer mRasterizer; 41 private Shader mShader; 42 private Typeface mTypeface; 43 private Xfermode mXfermode; 44 45 private boolean mHasCompatScaling; 46 private float mCompatScaling; 47 private float mInvCompatScaling; 48 49 private Locale mLocale; 50 51 /** 52 * @hide 53 */ 54 public boolean hasShadow; 55 /** 56 * @hide 57 */ 58 public float shadowDx; 59 /** 60 * @hide 61 */ 62 public float shadowDy; 63 /** 64 * @hide 65 */ 66 public float shadowRadius; 67 /** 68 * @hide 69 */ 70 public int shadowColor; 71 72 /** 73 * @hide 74 */ 75 public int mBidiFlags = BIDI_DEFAULT_LTR; 76 77 static final Style[] sStyleArray = { 78 Style.FILL, Style.STROKE, Style.FILL_AND_STROKE 79 }; 80 static final Cap[] sCapArray = { 81 Cap.BUTT, Cap.ROUND, Cap.SQUARE 82 }; 83 static final Join[] sJoinArray = { 84 Join.MITER, Join.ROUND, Join.BEVEL 85 }; 86 static final Align[] sAlignArray = { 87 Align.LEFT, Align.CENTER, Align.RIGHT 88 }; 89 90 /** bit mask for the flag enabling antialiasing */ 91 public static final int ANTI_ALIAS_FLAG = 0x01; 92 /** bit mask for the flag enabling bitmap filtering */ 93 public static final int FILTER_BITMAP_FLAG = 0x02; 94 /** bit mask for the flag enabling dithering */ 95 public static final int DITHER_FLAG = 0x04; 96 /** bit mask for the flag enabling underline text */ 97 public static final int UNDERLINE_TEXT_FLAG = 0x08; 98 /** bit mask for the flag enabling strike-thru text */ 99 public static final int STRIKE_THRU_TEXT_FLAG = 0x10; 100 /** bit mask for the flag enabling fake-bold text */ 101 public static final int FAKE_BOLD_TEXT_FLAG = 0x20; 102 /** bit mask for the flag enabling linear-text (no caching) */ 103 public static final int LINEAR_TEXT_FLAG = 0x40; 104 /** bit mask for the flag enabling subpixel-text */ 105 public static final int SUBPIXEL_TEXT_FLAG = 0x80; 106 /** bit mask for the flag enabling device kerning for text */ 107 public static final int DEV_KERN_TEXT_FLAG = 0x100; 108 109 // we use this when we first create a paint 110 static final int DEFAULT_PAINT_FLAGS = DEV_KERN_TEXT_FLAG; 111 112 /** 113 * Option for {@link #setHinting}: disable hinting. 114 */ 115 public static final int HINTING_OFF = 0x0; 116 117 /** 118 * Option for {@link #setHinting}: enable hinting. 119 */ 120 public static final int HINTING_ON = 0x1; 121 122 /** 123 * Bidi flag to set LTR paragraph direction. 124 * 125 * @hide 126 */ 127 public static final int BIDI_LTR = 0x0; 128 129 /** 130 * Bidi flag to set RTL paragraph direction. 131 * 132 * @hide 133 */ 134 public static final int BIDI_RTL = 0x1; 135 136 /** 137 * Bidi flag to detect paragraph direction via heuristics, defaulting to 138 * LTR. 139 * 140 * @hide 141 */ 142 public static final int BIDI_DEFAULT_LTR = 0x2; 143 144 /** 145 * Bidi flag to detect paragraph direction via heuristics, defaulting to 146 * RTL. 147 * 148 * @hide 149 */ 150 public static final int BIDI_DEFAULT_RTL = 0x3; 151 152 /** 153 * Bidi flag to override direction to all LTR (ignore bidi). 154 * 155 * @hide 156 */ 157 public static final int BIDI_FORCE_LTR = 0x4; 158 159 /** 160 * Bidi flag to override direction to all RTL (ignore bidi). 161 * 162 * @hide 163 */ 164 public static final int BIDI_FORCE_RTL = 0x5; 165 166 /** 167 * Maximum Bidi flag value. 168 * @hide 169 */ 170 private static final int BIDI_MAX_FLAG_VALUE = BIDI_FORCE_RTL; 171 172 /** 173 * Mask for bidi flags. 174 * @hide 175 */ 176 private static final int BIDI_FLAG_MASK = 0x7; 177 178 /** 179 * Flag for getTextRunAdvances indicating left-to-right run direction. 180 * @hide 181 */ 182 public static final int DIRECTION_LTR = 0; 183 184 /** 185 * Flag for getTextRunAdvances indicating right-to-left run direction. 186 * @hide 187 */ 188 public static final int DIRECTION_RTL = 1; 189 190 /** 191 * Option for getTextRunCursor to compute the valid cursor after 192 * offset or the limit of the context, whichever is less. 193 * @hide 194 */ 195 public static final int CURSOR_AFTER = 0; 196 197 /** 198 * Option for getTextRunCursor to compute the valid cursor at or after 199 * the offset or the limit of the context, whichever is less. 200 * @hide 201 */ 202 public static final int CURSOR_AT_OR_AFTER = 1; 203 204 /** 205 * Option for getTextRunCursor to compute the valid cursor before 206 * offset or the start of the context, whichever is greater. 207 * @hide 208 */ 209 public static final int CURSOR_BEFORE = 2; 210 211 /** 212 * Option for getTextRunCursor to compute the valid cursor at or before 213 * offset or the start of the context, whichever is greater. 214 * @hide 215 */ 216 public static final int CURSOR_AT_OR_BEFORE = 3; 217 218 /** 219 * Option for getTextRunCursor to return offset if the cursor at offset 220 * is valid, or -1 if it isn't. 221 * @hide 222 */ 223 public static final int CURSOR_AT = 4; 224 225 /** 226 * Maximum cursor option value. 227 */ 228 private static final int CURSOR_OPT_MAX_VALUE = CURSOR_AT; 229 230 /** 231 * The Style specifies if the primitive being drawn is filled, stroked, or 232 * both (in the same color). The default is FILL. 233 */ 234 public enum Style { 235 /** 236 * Geometry and text drawn with this style will be filled, ignoring all 237 * stroke-related settings in the paint. 238 */ 239 FILL (0), 240 /** 241 * Geometry and text drawn with this style will be stroked, respecting 242 * the stroke-related fields on the paint. 243 */ 244 STROKE (1), 245 /** 246 * Geometry and text drawn with this style will be both filled and 247 * stroked at the same time, respecting the stroke-related fields on 248 * the paint. This mode can give unexpected results if the geometry 249 * is oriented counter-clockwise. This restriction does not apply to 250 * either FILL or STROKE. 251 */ 252 FILL_AND_STROKE (2); 253 254 Style(int nativeInt) { 255 this.nativeInt = nativeInt; 256 } 257 final int nativeInt; 258 } 259 260 /** 261 * The Cap specifies the treatment for the beginning and ending of 262 * stroked lines and paths. The default is BUTT. 263 */ 264 public enum Cap { 265 /** 266 * The stroke ends with the path, and does not project beyond it. 267 */ 268 BUTT (0), 269 /** 270 * The stroke projects out as a semicircle, with the center at the 271 * end of the path. 272 */ 273 ROUND (1), 274 /** 275 * The stroke projects out as a square, with the center at the end 276 * of the path. 277 */ 278 SQUARE (2); 279 280 private Cap(int nativeInt) { 281 this.nativeInt = nativeInt; 282 } 283 final int nativeInt; 284 } 285 286 /** 287 * The Join specifies the treatment where lines and curve segments 288 * join on a stroked path. The default is MITER. 289 */ 290 public enum Join { 291 /** 292 * The outer edges of a join meet at a sharp angle 293 */ 294 MITER (0), 295 /** 296 * The outer edges of a join meet in a circular arc. 297 */ 298 ROUND (1), 299 /** 300 * The outer edges of a join meet with a straight line 301 */ 302 BEVEL (2); 303 304 private Join(int nativeInt) { 305 this.nativeInt = nativeInt; 306 } 307 final int nativeInt; 308 } 309 310 /** 311 * Align specifies how drawText aligns its text relative to the 312 * [x,y] coordinates. The default is LEFT. 313 */ 314 public enum Align { 315 /** 316 * The text is drawn to the right of the x,y origin 317 */ 318 LEFT (0), 319 /** 320 * The text is drawn centered horizontally on the x,y origin 321 */ 322 CENTER (1), 323 /** 324 * The text is drawn to the left of the x,y origin 325 */ 326 RIGHT (2); 327 328 private Align(int nativeInt) { 329 this.nativeInt = nativeInt; 330 } 331 final int nativeInt; 332 } 333 334 /** 335 * Create a new paint with default settings. 336 */ 337 public Paint() { 338 this(0); 339 } 340 341 /** 342 * Create a new paint with the specified flags. Use setFlags() to change 343 * these after the paint is created. 344 * 345 * @param flags initial flag bits, as if they were passed via setFlags(). 346 */ 347 public Paint(int flags) { 348 mNativePaint = native_init(); 349 setFlags(flags | DEFAULT_PAINT_FLAGS); 350 // TODO: Turning off hinting has undesirable side effects, we need to 351 // revisit hinting once we add support for subpixel positioning 352 // setHinting(DisplayMetrics.DENSITY_DEVICE >= DisplayMetrics.DENSITY_TV 353 // ? HINTING_OFF : HINTING_ON); 354 mCompatScaling = mInvCompatScaling = 1; 355 setTextLocale(Locale.getDefault()); 356 } 357 358 /** 359 * Create a new paint, initialized with the attributes in the specified 360 * paint parameter. 361 * 362 * @param paint Existing paint used to initialized the attributes of the 363 * new paint. 364 */ 365 public Paint(Paint paint) { 366 mNativePaint = native_initWithPaint(paint.mNativePaint); 367 setClassVariablesFrom(paint); 368 } 369 370 /** Restores the paint to its default settings. */ 371 public void reset() { 372 native_reset(mNativePaint); 373 setFlags(DEFAULT_PAINT_FLAGS); 374 375 // TODO: Turning off hinting has undesirable side effects, we need to 376 // revisit hinting once we add support for subpixel positioning 377 // setHinting(DisplayMetrics.DENSITY_DEVICE >= DisplayMetrics.DENSITY_TV 378 // ? HINTING_OFF : HINTING_ON); 379 380 mColorFilter = null; 381 mMaskFilter = null; 382 mPathEffect = null; 383 mRasterizer = null; 384 mShader = null; 385 mTypeface = null; 386 mXfermode = null; 387 388 mHasCompatScaling = false; 389 mCompatScaling = 1; 390 mInvCompatScaling = 1; 391 392 hasShadow = false; 393 shadowDx = 0; 394 shadowDy = 0; 395 shadowRadius = 0; 396 shadowColor = 0; 397 398 mBidiFlags = BIDI_DEFAULT_LTR; 399 setTextLocale(Locale.getDefault()); 400 } 401 402 /** 403 * Copy the fields from src into this paint. This is equivalent to calling 404 * get() on all of the src fields, and calling the corresponding set() 405 * methods on this. 406 */ 407 public void set(Paint src) { 408 if (this != src) { 409 // copy over the native settings 410 native_set(mNativePaint, src.mNativePaint); 411 setClassVariablesFrom(src); 412 } 413 } 414 415 /** 416 * Set all class variables using current values from the given 417 * {@link Paint}. 418 */ 419 private void setClassVariablesFrom(Paint paint) { 420 mColorFilter = paint.mColorFilter; 421 mMaskFilter = paint.mMaskFilter; 422 mPathEffect = paint.mPathEffect; 423 mRasterizer = paint.mRasterizer; 424 mShader = paint.mShader; 425 mTypeface = paint.mTypeface; 426 mXfermode = paint.mXfermode; 427 428 mHasCompatScaling = paint.mHasCompatScaling; 429 mCompatScaling = paint.mCompatScaling; 430 mInvCompatScaling = paint.mInvCompatScaling; 431 432 hasShadow = paint.hasShadow; 433 shadowDx = paint.shadowDx; 434 shadowDy = paint.shadowDy; 435 shadowRadius = paint.shadowRadius; 436 shadowColor = paint.shadowColor; 437 438 mBidiFlags = paint.mBidiFlags; 439 mLocale = paint.mLocale; 440 } 441 442 /** @hide */ 443 public void setCompatibilityScaling(float factor) { 444 if (factor == 1.0) { 445 mHasCompatScaling = false; 446 mCompatScaling = mInvCompatScaling = 1.0f; 447 } else { 448 mHasCompatScaling = true; 449 mCompatScaling = factor; 450 mInvCompatScaling = 1.0f/factor; 451 } 452 } 453 454 /** 455 * Return the bidi flags on the paint. 456 * 457 * @return the bidi flags on the paint 458 * @hide 459 */ 460 public int getBidiFlags() { 461 return mBidiFlags; 462 } 463 464 /** 465 * Set the bidi flags on the paint. 466 * @hide 467 */ 468 public void setBidiFlags(int flags) { 469 // only flag value is the 3-bit BIDI control setting 470 flags &= BIDI_FLAG_MASK; 471 if (flags > BIDI_MAX_FLAG_VALUE) { 472 throw new IllegalArgumentException("unknown bidi flag: " + flags); 473 } 474 mBidiFlags = flags; 475 } 476 477 /** 478 * Return the paint's flags. Use the Flag enum to test flag values. 479 * 480 * @return the paint's flags (see enums ending in _Flag for bit masks) 481 */ 482 public native int getFlags(); 483 484 /** 485 * Set the paint's flags. Use the Flag enum to specific flag values. 486 * 487 * @param flags The new flag bits for the paint 488 */ 489 public native void setFlags(int flags); 490 491 /** 492 * Return the paint's hinting mode. Returns either 493 * {@link #HINTING_OFF} or {@link #HINTING_ON}. 494 */ 495 public native int getHinting(); 496 497 /** 498 * Set the paint's hinting mode. May be either 499 * {@link #HINTING_OFF} or {@link #HINTING_ON}. 500 */ 501 public native void setHinting(int mode); 502 503 /** 504 * Helper for getFlags(), returning true if ANTI_ALIAS_FLAG bit is set 505 * AntiAliasing smooths out the edges of what is being drawn, but is has 506 * no impact on the interior of the shape. See setDither() and 507 * setFilterBitmap() to affect how colors are treated. 508 * 509 * @return true if the antialias bit is set in the paint's flags. 510 */ 511 public final boolean isAntiAlias() { 512 return (getFlags() & ANTI_ALIAS_FLAG) != 0; 513 } 514 515 /** 516 * Helper for setFlags(), setting or clearing the ANTI_ALIAS_FLAG bit 517 * AntiAliasing smooths out the edges of what is being drawn, but is has 518 * no impact on the interior of the shape. See setDither() and 519 * setFilterBitmap() to affect how colors are treated. 520 * 521 * @param aa true to set the antialias bit in the flags, false to clear it 522 */ 523 public native void setAntiAlias(boolean aa); 524 525 /** 526 * Helper for getFlags(), returning true if DITHER_FLAG bit is set 527 * Dithering affects how colors that are higher precision than the device 528 * are down-sampled. No dithering is generally faster, but higher precision 529 * colors are just truncated down (e.g. 8888 -> 565). Dithering tries to 530 * distribute the error inherent in this process, to reduce the visual 531 * artifacts. 532 * 533 * @return true if the dithering bit is set in the paint's flags. 534 */ 535 public final boolean isDither() { 536 return (getFlags() & DITHER_FLAG) != 0; 537 } 538 539 /** 540 * Helper for setFlags(), setting or clearing the DITHER_FLAG bit 541 * Dithering affects how colors that are higher precision than the device 542 * are down-sampled. No dithering is generally faster, but higher precision 543 * colors are just truncated down (e.g. 8888 -> 565). Dithering tries to 544 * distribute the error inherent in this process, to reduce the visual 545 * artifacts. 546 * 547 * @param dither true to set the dithering bit in flags, false to clear it 548 */ 549 public native void setDither(boolean dither); 550 551 /** 552 * Helper for getFlags(), returning true if LINEAR_TEXT_FLAG bit is set 553 * 554 * @return true if the lineartext bit is set in the paint's flags 555 */ 556 public final boolean isLinearText() { 557 return (getFlags() & LINEAR_TEXT_FLAG) != 0; 558 } 559 560 /** 561 * Helper for setFlags(), setting or clearing the LINEAR_TEXT_FLAG bit 562 * 563 * @param linearText true to set the linearText bit in the paint's flags, 564 * false to clear it. 565 */ 566 public native void setLinearText(boolean linearText); 567 568 /** 569 * Helper for getFlags(), returning true if SUBPIXEL_TEXT_FLAG bit is set 570 * 571 * @return true if the subpixel bit is set in the paint's flags 572 */ 573 public final boolean isSubpixelText() { 574 return (getFlags() & SUBPIXEL_TEXT_FLAG) != 0; 575 } 576 577 /** 578 * Helper for setFlags(), setting or clearing the SUBPIXEL_TEXT_FLAG bit 579 * 580 * @param subpixelText true to set the subpixelText bit in the paint's 581 * flags, false to clear it. 582 */ 583 public native void setSubpixelText(boolean subpixelText); 584 585 /** 586 * Helper for getFlags(), returning true if UNDERLINE_TEXT_FLAG bit is set 587 * 588 * @return true if the underlineText bit is set in the paint's flags. 589 */ 590 public final boolean isUnderlineText() { 591 return (getFlags() & UNDERLINE_TEXT_FLAG) != 0; 592 } 593 594 /** 595 * Helper for setFlags(), setting or clearing the UNDERLINE_TEXT_FLAG bit 596 * 597 * @param underlineText true to set the underlineText bit in the paint's 598 * flags, false to clear it. 599 */ 600 public native void setUnderlineText(boolean underlineText); 601 602 /** 603 * Helper for getFlags(), returning true if STRIKE_THRU_TEXT_FLAG bit is set 604 * 605 * @return true if the strikeThruText bit is set in the paint's flags. 606 */ 607 public final boolean isStrikeThruText() { 608 return (getFlags() & STRIKE_THRU_TEXT_FLAG) != 0; 609 } 610 611 /** 612 * Helper for setFlags(), setting or clearing the STRIKE_THRU_TEXT_FLAG bit 613 * 614 * @param strikeThruText true to set the strikeThruText bit in the paint's 615 * flags, false to clear it. 616 */ 617 public native void setStrikeThruText(boolean strikeThruText); 618 619 /** 620 * Helper for getFlags(), returning true if FAKE_BOLD_TEXT_FLAG bit is set 621 * 622 * @return true if the fakeBoldText bit is set in the paint's flags. 623 */ 624 public final boolean isFakeBoldText() { 625 return (getFlags() & FAKE_BOLD_TEXT_FLAG) != 0; 626 } 627 628 /** 629 * Helper for setFlags(), setting or clearing the FAKE_BOLD_TEXT_FLAG bit 630 * 631 * @param fakeBoldText true to set the fakeBoldText bit in the paint's 632 * flags, false to clear it. 633 */ 634 public native void setFakeBoldText(boolean fakeBoldText); 635 636 /** 637 * Whether or not the bitmap filter is activated. 638 * Filtering affects the sampling of bitmaps when they are transformed. 639 * Filtering does not affect how the colors in the bitmap are converted into 640 * device pixels. That is dependent on dithering and xfermodes. 641 * 642 * @see #setFilterBitmap(boolean) setFilterBitmap() 643 */ 644 public final boolean isFilterBitmap() { 645 return (getFlags() & FILTER_BITMAP_FLAG) != 0; 646 } 647 648 /** 649 * Helper for setFlags(), setting or clearing the FILTER_BITMAP_FLAG bit. 650 * Filtering affects the sampling of bitmaps when they are transformed. 651 * Filtering does not affect how the colors in the bitmap are converted into 652 * device pixels. That is dependent on dithering and xfermodes. 653 * 654 * @param filter true to set the FILTER_BITMAP_FLAG bit in the paint's 655 * flags, false to clear it. 656 */ 657 public native void setFilterBitmap(boolean filter); 658 659 /** 660 * Return the paint's style, used for controlling how primitives' 661 * geometries are interpreted (except for drawBitmap, which always assumes 662 * FILL_STYLE). 663 * 664 * @return the paint's style setting (Fill, Stroke, StrokeAndFill) 665 */ 666 public Style getStyle() { 667 return sStyleArray[native_getStyle(mNativePaint)]; 668 } 669 670 /** 671 * Set the paint's style, used for controlling how primitives' 672 * geometries are interpreted (except for drawBitmap, which always assumes 673 * Fill). 674 * 675 * @param style The new style to set in the paint 676 */ 677 public void setStyle(Style style) { 678 native_setStyle(mNativePaint, style.nativeInt); 679 } 680 681 /** 682 * Return the paint's color. Note that the color is a 32bit value 683 * containing alpha as well as r,g,b. This 32bit value is not premultiplied, 684 * meaning that its alpha can be any value, regardless of the values of 685 * r,g,b. See the Color class for more details. 686 * 687 * @return the paint's color (and alpha). 688 */ 689 public native int getColor(); 690 691 /** 692 * Set the paint's color. Note that the color is an int containing alpha 693 * as well as r,g,b. This 32bit value is not premultiplied, meaning that 694 * its alpha can be any value, regardless of the values of r,g,b. 695 * See the Color class for more details. 696 * 697 * @param color The new color (including alpha) to set in the paint. 698 */ 699 public native void setColor(int color); 700 701 /** 702 * Helper to getColor() that just returns the color's alpha value. This is 703 * the same as calling getColor() >>> 24. It always returns a value between 704 * 0 (completely transparent) and 255 (completely opaque). 705 * 706 * @return the alpha component of the paint's color. 707 */ 708 public native int getAlpha(); 709 710 /** 711 * Helper to setColor(), that only assigns the color's alpha value, 712 * leaving its r,g,b values unchanged. Results are undefined if the alpha 713 * value is outside of the range [0..255] 714 * 715 * @param a set the alpha component [0..255] of the paint's color. 716 */ 717 public native void setAlpha(int a); 718 719 /** 720 * Helper to setColor(), that takes a,r,g,b and constructs the color int 721 * 722 * @param a The new alpha component (0..255) of the paint's color. 723 * @param r The new red component (0..255) of the paint's color. 724 * @param g The new green component (0..255) of the paint's color. 725 * @param b The new blue component (0..255) of the paint's color. 726 */ 727 public void setARGB(int a, int r, int g, int b) { 728 setColor((a << 24) | (r << 16) | (g << 8) | b); 729 } 730 731 /** 732 * Return the width for stroking. 733 * <p /> 734 * A value of 0 strokes in hairline mode. 735 * Hairlines always draws a single pixel independent of the canva's matrix. 736 * 737 * @return the paint's stroke width, used whenever the paint's style is 738 * Stroke or StrokeAndFill. 739 */ 740 public native float getStrokeWidth(); 741 742 /** 743 * Set the width for stroking. 744 * Pass 0 to stroke in hairline mode. 745 * Hairlines always draws a single pixel independent of the canva's matrix. 746 * 747 * @param width set the paint's stroke width, used whenever the paint's 748 * style is Stroke or StrokeAndFill. 749 */ 750 public native void setStrokeWidth(float width); 751 752 /** 753 * Return the paint's stroke miter value. Used to control the behavior 754 * of miter joins when the joins angle is sharp. 755 * 756 * @return the paint's miter limit, used whenever the paint's style is 757 * Stroke or StrokeAndFill. 758 */ 759 public native float getStrokeMiter(); 760 761 /** 762 * Set the paint's stroke miter value. This is used to control the behavior 763 * of miter joins when the joins angle is sharp. This value must be >= 0. 764 * 765 * @param miter set the miter limit on the paint, used whenever the paint's 766 * style is Stroke or StrokeAndFill. 767 */ 768 public native void setStrokeMiter(float miter); 769 770 /** 771 * Return the paint's Cap, controlling how the start and end of stroked 772 * lines and paths are treated. 773 * 774 * @return the line cap style for the paint, used whenever the paint's 775 * style is Stroke or StrokeAndFill. 776 */ 777 public Cap getStrokeCap() { 778 return sCapArray[native_getStrokeCap(mNativePaint)]; 779 } 780 781 /** 782 * Set the paint's Cap. 783 * 784 * @param cap set the paint's line cap style, used whenever the paint's 785 * style is Stroke or StrokeAndFill. 786 */ 787 public void setStrokeCap(Cap cap) { 788 native_setStrokeCap(mNativePaint, cap.nativeInt); 789 } 790 791 /** 792 * Return the paint's stroke join type. 793 * 794 * @return the paint's Join. 795 */ 796 public Join getStrokeJoin() { 797 return sJoinArray[native_getStrokeJoin(mNativePaint)]; 798 } 799 800 /** 801 * Set the paint's Join. 802 * 803 * @param join set the paint's Join, used whenever the paint's style is 804 * Stroke or StrokeAndFill. 805 */ 806 public void setStrokeJoin(Join join) { 807 native_setStrokeJoin(mNativePaint, join.nativeInt); 808 } 809 810 /** 811 * Applies any/all effects (patheffect, stroking) to src, returning the 812 * result in dst. The result is that drawing src with this paint will be 813 * the same as drawing dst with a default paint (at least from the 814 * geometric perspective). 815 * 816 * @param src input path 817 * @param dst output path (may be the same as src) 818 * @return true if the path should be filled, or false if it should be 819 * drawn with a hairline (width == 0) 820 */ 821 public boolean getFillPath(Path src, Path dst) { 822 return native_getFillPath(mNativePaint, src.ni(), dst.ni()); 823 } 824 825 /** 826 * Get the paint's shader object. 827 * 828 * @return the paint's shader (or null) 829 */ 830 public Shader getShader() { 831 return mShader; 832 } 833 834 /** 835 * Set or clear the shader object. 836 * <p /> 837 * Pass null to clear any previous shader. 838 * As a convenience, the parameter passed is also returned. 839 * 840 * @param shader May be null. the new shader to be installed in the paint 841 * @return shader 842 */ 843 public Shader setShader(Shader shader) { 844 int shaderNative = 0; 845 if (shader != null) 846 shaderNative = shader.native_instance; 847 native_setShader(mNativePaint, shaderNative); 848 mShader = shader; 849 return shader; 850 } 851 852 /** 853 * Get the paint's colorfilter (maybe be null). 854 * 855 * @return the paint's colorfilter (maybe be null) 856 */ 857 public ColorFilter getColorFilter() { 858 return mColorFilter; 859 } 860 861 /** 862 * Set or clear the paint's colorfilter, returning the parameter. 863 * 864 * @param filter May be null. The new filter to be installed in the paint 865 * @return filter 866 */ 867 public ColorFilter setColorFilter(ColorFilter filter) { 868 int filterNative = 0; 869 if (filter != null) 870 filterNative = filter.native_instance; 871 native_setColorFilter(mNativePaint, filterNative); 872 mColorFilter = filter; 873 return filter; 874 } 875 876 /** 877 * Get the paint's xfermode object. 878 * 879 * @return the paint's xfermode (or null) 880 */ 881 public Xfermode getXfermode() { 882 return mXfermode; 883 } 884 885 /** 886 * Set or clear the xfermode object. 887 * <p /> 888 * Pass null to clear any previous xfermode. 889 * As a convenience, the parameter passed is also returned. 890 * 891 * @param xfermode May be null. The xfermode to be installed in the paint 892 * @return xfermode 893 */ 894 public Xfermode setXfermode(Xfermode xfermode) { 895 int xfermodeNative = 0; 896 if (xfermode != null) 897 xfermodeNative = xfermode.native_instance; 898 native_setXfermode(mNativePaint, xfermodeNative); 899 mXfermode = xfermode; 900 return xfermode; 901 } 902 903 /** 904 * Get the paint's patheffect object. 905 * 906 * @return the paint's patheffect (or null) 907 */ 908 public PathEffect getPathEffect() { 909 return mPathEffect; 910 } 911 912 /** 913 * Set or clear the patheffect object. 914 * <p /> 915 * Pass null to clear any previous patheffect. 916 * As a convenience, the parameter passed is also returned. 917 * 918 * @param effect May be null. The patheffect to be installed in the paint 919 * @return effect 920 */ 921 public PathEffect setPathEffect(PathEffect effect) { 922 int effectNative = 0; 923 if (effect != null) { 924 effectNative = effect.native_instance; 925 } 926 native_setPathEffect(mNativePaint, effectNative); 927 mPathEffect = effect; 928 return effect; 929 } 930 931 /** 932 * Get the paint's maskfilter object. 933 * 934 * @return the paint's maskfilter (or null) 935 */ 936 public MaskFilter getMaskFilter() { 937 return mMaskFilter; 938 } 939 940 /** 941 * Set or clear the maskfilter object. 942 * <p /> 943 * Pass null to clear any previous maskfilter. 944 * As a convenience, the parameter passed is also returned. 945 * 946 * @param maskfilter May be null. The maskfilter to be installed in the 947 * paint 948 * @return maskfilter 949 */ 950 public MaskFilter setMaskFilter(MaskFilter maskfilter) { 951 int maskfilterNative = 0; 952 if (maskfilter != null) { 953 maskfilterNative = maskfilter.native_instance; 954 } 955 native_setMaskFilter(mNativePaint, maskfilterNative); 956 mMaskFilter = maskfilter; 957 return maskfilter; 958 } 959 960 /** 961 * Get the paint's typeface object. 962 * <p /> 963 * The typeface object identifies which font to use when drawing or 964 * measuring text. 965 * 966 * @return the paint's typeface (or null) 967 */ 968 public Typeface getTypeface() { 969 return mTypeface; 970 } 971 972 /** 973 * Set or clear the typeface object. 974 * <p /> 975 * Pass null to clear any previous typeface. 976 * As a convenience, the parameter passed is also returned. 977 * 978 * @param typeface May be null. The typeface to be installed in the paint 979 * @return typeface 980 */ 981 public Typeface setTypeface(Typeface typeface) { 982 int typefaceNative = 0; 983 if (typeface != null) { 984 typefaceNative = typeface.native_instance; 985 } 986 native_setTypeface(mNativePaint, typefaceNative); 987 mTypeface = typeface; 988 return typeface; 989 } 990 991 /** 992 * Get the paint's rasterizer (or null). 993 * <p /> 994 * The raster controls/modifies how paths/text are turned into alpha masks. 995 * 996 * @return the paint's rasterizer (or null) 997 */ 998 public Rasterizer getRasterizer() { 999 return mRasterizer; 1000 } 1001 1002 /** 1003 * Set or clear the rasterizer object. 1004 * <p /> 1005 * Pass null to clear any previous rasterizer. 1006 * As a convenience, the parameter passed is also returned. 1007 * 1008 * @param rasterizer May be null. The new rasterizer to be installed in 1009 * the paint. 1010 * @return rasterizer 1011 */ 1012 public Rasterizer setRasterizer(Rasterizer rasterizer) { 1013 int rasterizerNative = 0; 1014 if (rasterizer != null) { 1015 rasterizerNative = rasterizer.native_instance; 1016 } 1017 native_setRasterizer(mNativePaint, rasterizerNative); 1018 mRasterizer = rasterizer; 1019 return rasterizer; 1020 } 1021 1022 /** 1023 * This draws a shadow layer below the main layer, with the specified 1024 * offset and color, and blur radius. If radius is 0, then the shadow 1025 * layer is removed. 1026 */ 1027 public void setShadowLayer(float radius, float dx, float dy, int color) { 1028 hasShadow = radius > 0.0f; 1029 shadowRadius = radius; 1030 shadowDx = dx; 1031 shadowDy = dy; 1032 shadowColor = color; 1033 nSetShadowLayer(radius, dx, dy, color); 1034 } 1035 1036 private native void nSetShadowLayer(float radius, float dx, float dy, int color); 1037 1038 /** 1039 * Clear the shadow layer. 1040 */ 1041 public void clearShadowLayer() { 1042 hasShadow = false; 1043 nSetShadowLayer(0, 0, 0, 0); 1044 } 1045 1046 /** 1047 * Return the paint's Align value for drawing text. This controls how the 1048 * text is positioned relative to its origin. LEFT align means that all of 1049 * the text will be drawn to the right of its origin (i.e. the origin 1050 * specifieds the LEFT edge of the text) and so on. 1051 * 1052 * @return the paint's Align value for drawing text. 1053 */ 1054 public Align getTextAlign() { 1055 return sAlignArray[native_getTextAlign(mNativePaint)]; 1056 } 1057 1058 /** 1059 * Set the paint's text alignment. This controls how the 1060 * text is positioned relative to its origin. LEFT align means that all of 1061 * the text will be drawn to the right of its origin (i.e. the origin 1062 * specifieds the LEFT edge of the text) and so on. 1063 * 1064 * @param align set the paint's Align value for drawing text. 1065 */ 1066 public void setTextAlign(Align align) { 1067 native_setTextAlign(mNativePaint, align.nativeInt); 1068 } 1069 1070 /** 1071 * Get the text Locale. 1072 * 1073 * @return the paint's Locale used for drawing text, never null. 1074 */ 1075 public Locale getTextLocale() { 1076 return mLocale; 1077 } 1078 1079 /** 1080 * Set the text locale. 1081 * 1082 * The text locale affects how the text is drawn for some languages. 1083 * 1084 * For example, if the locale is {@link Locale#CHINESE} or {@link Locale#CHINA}, 1085 * then the text renderer will prefer to draw text using a Chinese font. Likewise, 1086 * if the locale is {@link Locale#JAPANESE} or {@link Locale#JAPAN}, then the text 1087 * renderer will prefer to draw text using a Japanese font. 1088 * 1089 * This distinction is important because Chinese and Japanese text both use many 1090 * of the same Unicode code points but their appearance is subtly different for 1091 * each language. 1092 * 1093 * By default, the text locale is initialized to the system locale (as returned 1094 * by {@link Locale#getDefault}). This assumes that the text to be rendered will 1095 * most likely be in the user's preferred language. 1096 * 1097 * If the actual language of the text is known, then it can be provided to the 1098 * text renderer using this method. The text renderer may attempt to guess the 1099 * language script based on the contents of the text to be drawn independent of 1100 * the text locale here. Specifying the text locale just helps it do a better 1101 * job in certain ambiguous cases 1102 * 1103 * @param locale the paint's locale value for drawing text, must not be null. 1104 */ 1105 public void setTextLocale(Locale locale) { 1106 if (locale == null) { 1107 throw new IllegalArgumentException("locale cannot be null"); 1108 } 1109 if (locale.equals(mLocale)) return; 1110 mLocale = locale; 1111 native_setTextLocale(mNativePaint, locale.toString()); 1112 } 1113 1114 /** 1115 * Return the paint's text size. 1116 * 1117 * @return the paint's text size. 1118 */ 1119 public native float getTextSize(); 1120 1121 /** 1122 * Set the paint's text size. This value must be > 0 1123 * 1124 * @param textSize set the paint's text size. 1125 */ 1126 public native void setTextSize(float textSize); 1127 1128 /** 1129 * Return the paint's horizontal scale factor for text. The default value 1130 * is 1.0. 1131 * 1132 * @return the paint's scale factor in X for drawing/measuring text 1133 */ 1134 public native float getTextScaleX(); 1135 1136 /** 1137 * Set the paint's horizontal scale factor for text. The default value 1138 * is 1.0. Values > 1.0 will stretch the text wider. Values < 1.0 will 1139 * stretch the text narrower. 1140 * 1141 * @param scaleX set the paint's scale in X for drawing/measuring text. 1142 */ 1143 public native void setTextScaleX(float scaleX); 1144 1145 /** 1146 * Return the paint's horizontal skew factor for text. The default value 1147 * is 0. 1148 * 1149 * @return the paint's skew factor in X for drawing text. 1150 */ 1151 public native float getTextSkewX(); 1152 1153 /** 1154 * Set the paint's horizontal skew factor for text. The default value 1155 * is 0. For approximating oblique text, use values around -0.25. 1156 * 1157 * @param skewX set the paint's skew factor in X for drawing text. 1158 */ 1159 public native void setTextSkewX(float skewX); 1160 1161 /** 1162 * Return the distance above (negative) the baseline (ascent) based on the 1163 * current typeface and text size. 1164 * 1165 * @return the distance above (negative) the baseline (ascent) based on the 1166 * current typeface and text size. 1167 */ 1168 public native float ascent(); 1169 1170 /** 1171 * Return the distance below (positive) the baseline (descent) based on the 1172 * current typeface and text size. 1173 * 1174 * @return the distance below (positive) the baseline (descent) based on 1175 * the current typeface and text size. 1176 */ 1177 public native float descent(); 1178 1179 /** 1180 * Class that describes the various metrics for a font at a given text size. 1181 * Remember, Y values increase going down, so those values will be positive, 1182 * and values that measure distances going up will be negative. This class 1183 * is returned by getFontMetrics(). 1184 */ 1185 public static class FontMetrics { 1186 /** 1187 * The maximum distance above the baseline for the tallest glyph in 1188 * the font at a given text size. 1189 */ 1190 public float top; 1191 /** 1192 * The recommended distance above the baseline for singled spaced text. 1193 */ 1194 public float ascent; 1195 /** 1196 * The recommended distance below the baseline for singled spaced text. 1197 */ 1198 public float descent; 1199 /** 1200 * The maximum distance below the baseline for the lowest glyph in 1201 * the font at a given text size. 1202 */ 1203 public float bottom; 1204 /** 1205 * The recommended additional space to add between lines of text. 1206 */ 1207 public float leading; 1208 } 1209 1210 /** 1211 * Return the font's recommended interline spacing, given the Paint's 1212 * settings for typeface, textSize, etc. If metrics is not null, return the 1213 * fontmetric values in it. 1214 * 1215 * @param metrics If this object is not null, its fields are filled with 1216 * the appropriate values given the paint's text attributes. 1217 * @return the font's recommended interline spacing. 1218 */ 1219 public native float getFontMetrics(FontMetrics metrics); 1220 1221 /** 1222 * Allocates a new FontMetrics object, and then calls getFontMetrics(fm) 1223 * with it, returning the object. 1224 */ 1225 public FontMetrics getFontMetrics() { 1226 FontMetrics fm = new FontMetrics(); 1227 getFontMetrics(fm); 1228 return fm; 1229 } 1230 1231 /** 1232 * Convenience method for callers that want to have FontMetrics values as 1233 * integers. 1234 */ 1235 public static class FontMetricsInt { 1236 public int top; 1237 public int ascent; 1238 public int descent; 1239 public int bottom; 1240 public int leading; 1241 1242 @Override public String toString() { 1243 return "FontMetricsInt: top=" + top + " ascent=" + ascent + 1244 " descent=" + descent + " bottom=" + bottom + 1245 " leading=" + leading; 1246 } 1247 } 1248 1249 /** 1250 * Return the font's interline spacing, given the Paint's settings for 1251 * typeface, textSize, etc. If metrics is not null, return the fontmetric 1252 * values in it. Note: all values have been converted to integers from 1253 * floats, in such a way has to make the answers useful for both spacing 1254 * and clipping. If you want more control over the rounding, call 1255 * getFontMetrics(). 1256 * 1257 * @return the font's interline spacing. 1258 */ 1259 public native int getFontMetricsInt(FontMetricsInt fmi); 1260 1261 public FontMetricsInt getFontMetricsInt() { 1262 FontMetricsInt fm = new FontMetricsInt(); 1263 getFontMetricsInt(fm); 1264 return fm; 1265 } 1266 1267 /** 1268 * Return the recommend line spacing based on the current typeface and 1269 * text size. 1270 * 1271 * @return recommend line spacing based on the current typeface and 1272 * text size. 1273 */ 1274 public float getFontSpacing() { 1275 return getFontMetrics(null); 1276 } 1277 1278 /** 1279 * Return the width of the text. 1280 * 1281 * @param text The text to measure. Cannot be null. 1282 * @param index The index of the first character to start measuring 1283 * @param count THe number of characters to measure, beginning with start 1284 * @return The width of the text 1285 */ 1286 public float measureText(char[] text, int index, int count) { 1287 if (text == null) { 1288 throw new IllegalArgumentException("text cannot be null"); 1289 } 1290 if ((index | count) < 0 || index + count > text.length) { 1291 throw new ArrayIndexOutOfBoundsException(); 1292 } 1293 1294 if (text.length == 0 || count == 0) { 1295 return 0f; 1296 } 1297 if (!mHasCompatScaling) { 1298 return (float) Math.ceil(native_measureText(text, index, count, mBidiFlags)); 1299 } 1300 1301 final float oldSize = getTextSize(); 1302 setTextSize(oldSize*mCompatScaling); 1303 float w = native_measureText(text, index, count, mBidiFlags); 1304 setTextSize(oldSize); 1305 return (float) Math.ceil(w*mInvCompatScaling); 1306 } 1307 1308 private native float native_measureText(char[] text, int index, int count, int bidiFlags); 1309 1310 /** 1311 * Return the width of the text. 1312 * 1313 * @param text The text to measure. Cannot be null. 1314 * @param start The index of the first character to start measuring 1315 * @param end 1 beyond the index of the last character to measure 1316 * @return The width of the text 1317 */ 1318 public float measureText(String text, int start, int end) { 1319 if (text == null) { 1320 throw new IllegalArgumentException("text cannot be null"); 1321 } 1322 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1323 throw new IndexOutOfBoundsException(); 1324 } 1325 1326 if (text.length() == 0 || start == end) { 1327 return 0f; 1328 } 1329 if (!mHasCompatScaling) { 1330 return (float) Math.ceil(native_measureText(text, start, end, mBidiFlags)); 1331 } 1332 1333 final float oldSize = getTextSize(); 1334 setTextSize(oldSize*mCompatScaling); 1335 float w = native_measureText(text, start, end, mBidiFlags); 1336 setTextSize(oldSize); 1337 return (float) Math.ceil(w*mInvCompatScaling); 1338 } 1339 1340 private native float native_measureText(String text, int start, int end, int bidiFlags); 1341 1342 /** 1343 * Return the width of the text. 1344 * 1345 * @param text The text to measure. Cannot be null. 1346 * @return The width of the text 1347 */ 1348 public float measureText(String text) { 1349 if (text == null) { 1350 throw new IllegalArgumentException("text cannot be null"); 1351 } 1352 1353 if (text.length() == 0) { 1354 return 0f; 1355 } 1356 1357 if (!mHasCompatScaling) { 1358 return (float) Math.ceil(native_measureText(text, mBidiFlags)); 1359 } 1360 final float oldSize = getTextSize(); 1361 setTextSize(oldSize*mCompatScaling); 1362 float w = native_measureText(text, mBidiFlags); 1363 setTextSize(oldSize); 1364 return (float) Math.ceil(w*mInvCompatScaling); 1365 } 1366 1367 private native float native_measureText(String text, int bidiFlags); 1368 1369 /** 1370 * Return the width of the text. 1371 * 1372 * @param text The text to measure 1373 * @param start The index of the first character to start measuring 1374 * @param end 1 beyond the index of the last character to measure 1375 * @return The width of the text 1376 */ 1377 public float measureText(CharSequence text, int start, int end) { 1378 if (text == null) { 1379 throw new IllegalArgumentException("text cannot be null"); 1380 } 1381 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1382 throw new IndexOutOfBoundsException(); 1383 } 1384 1385 if (text.length() == 0 || start == end) { 1386 return 0f; 1387 } 1388 if (text instanceof String) { 1389 return measureText((String)text, start, end); 1390 } 1391 if (text instanceof SpannedString || 1392 text instanceof SpannableString) { 1393 return measureText(text.toString(), start, end); 1394 } 1395 if (text instanceof GraphicsOperations) { 1396 return ((GraphicsOperations)text).measureText(start, end, this); 1397 } 1398 1399 char[] buf = TemporaryBuffer.obtain(end - start); 1400 TextUtils.getChars(text, start, end, buf, 0); 1401 float result = measureText(buf, 0, end - start); 1402 TemporaryBuffer.recycle(buf); 1403 return result; 1404 } 1405 1406 /** 1407 * Measure the text, stopping early if the measured width exceeds maxWidth. 1408 * Return the number of chars that were measured, and if measuredWidth is 1409 * not null, return in it the actual width measured. 1410 * 1411 * @param text The text to measure. Cannot be null. 1412 * @param index The offset into text to begin measuring at 1413 * @param count The number of maximum number of entries to measure. If count 1414 * is negative, then the characters are measured in reverse order. 1415 * @param maxWidth The maximum width to accumulate. 1416 * @param measuredWidth Optional. If not null, returns the actual width 1417 * measured. 1418 * @return The number of chars that were measured. Will always be <= 1419 * abs(count). 1420 */ 1421 public int breakText(char[] text, int index, int count, 1422 float maxWidth, float[] measuredWidth) { 1423 if (text == null) { 1424 throw new IllegalArgumentException("text cannot be null"); 1425 } 1426 if (index < 0 || text.length - index < Math.abs(count)) { 1427 throw new ArrayIndexOutOfBoundsException(); 1428 } 1429 1430 if (text.length == 0 || count == 0) { 1431 return 0; 1432 } 1433 if (!mHasCompatScaling) { 1434 return native_breakText(text, index, count, maxWidth, mBidiFlags, measuredWidth); 1435 } 1436 1437 final float oldSize = getTextSize(); 1438 setTextSize(oldSize*mCompatScaling); 1439 int res = native_breakText(text, index, count, maxWidth*mCompatScaling, mBidiFlags, 1440 measuredWidth); 1441 setTextSize(oldSize); 1442 if (measuredWidth != null) measuredWidth[0] *= mInvCompatScaling; 1443 return res; 1444 } 1445 1446 private native int native_breakText(char[] text, int index, int count, 1447 float maxWidth, int bidiFlags, float[] measuredWidth); 1448 1449 /** 1450 * Measure the text, stopping early if the measured width exceeds maxWidth. 1451 * Return the number of chars that were measured, and if measuredWidth is 1452 * not null, return in it the actual width measured. 1453 * 1454 * @param text The text to measure. Cannot be null. 1455 * @param start The offset into text to begin measuring at 1456 * @param end The end of the text slice to measure. 1457 * @param measureForwards If true, measure forwards, starting at start. 1458 * Otherwise, measure backwards, starting with end. 1459 * @param maxWidth The maximum width to accumulate. 1460 * @param measuredWidth Optional. If not null, returns the actual width 1461 * measured. 1462 * @return The number of chars that were measured. Will always be <= 1463 * abs(end - start). 1464 */ 1465 public int breakText(CharSequence text, int start, int end, 1466 boolean measureForwards, 1467 float maxWidth, float[] measuredWidth) { 1468 if (text == null) { 1469 throw new IllegalArgumentException("text cannot be null"); 1470 } 1471 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1472 throw new IndexOutOfBoundsException(); 1473 } 1474 1475 if (text.length() == 0 || start == end) { 1476 return 0; 1477 } 1478 if (start == 0 && text instanceof String && end == text.length()) { 1479 return breakText((String) text, measureForwards, maxWidth, 1480 measuredWidth); 1481 } 1482 1483 char[] buf = TemporaryBuffer.obtain(end - start); 1484 int result; 1485 1486 TextUtils.getChars(text, start, end, buf, 0); 1487 1488 if (measureForwards) { 1489 result = breakText(buf, 0, end - start, maxWidth, measuredWidth); 1490 } else { 1491 result = breakText(buf, 0, -(end - start), maxWidth, measuredWidth); 1492 } 1493 1494 TemporaryBuffer.recycle(buf); 1495 return result; 1496 } 1497 1498 /** 1499 * Measure the text, stopping early if the measured width exceeds maxWidth. 1500 * Return the number of chars that were measured, and if measuredWidth is 1501 * not null, return in it the actual width measured. 1502 * 1503 * @param text The text to measure. Cannot be null. 1504 * @param measureForwards If true, measure forwards, starting with the 1505 * first character in the string. Otherwise, 1506 * measure backwards, starting with the 1507 * last character in the string. 1508 * @param maxWidth The maximum width to accumulate. 1509 * @param measuredWidth Optional. If not null, returns the actual width 1510 * measured. 1511 * @return The number of chars that were measured. Will always be <= 1512 * abs(count). 1513 */ 1514 public int breakText(String text, boolean measureForwards, 1515 float maxWidth, float[] measuredWidth) { 1516 if (text == null) { 1517 throw new IllegalArgumentException("text cannot be null"); 1518 } 1519 1520 if (text.length() == 0) { 1521 return 0; 1522 } 1523 if (!mHasCompatScaling) { 1524 return native_breakText(text, measureForwards, maxWidth, mBidiFlags, measuredWidth); 1525 } 1526 1527 final float oldSize = getTextSize(); 1528 setTextSize(oldSize*mCompatScaling); 1529 int res = native_breakText(text, measureForwards, maxWidth*mCompatScaling, mBidiFlags, 1530 measuredWidth); 1531 setTextSize(oldSize); 1532 if (measuredWidth != null) measuredWidth[0] *= mInvCompatScaling; 1533 return res; 1534 } 1535 1536 private native int native_breakText(String text, boolean measureForwards, 1537 float maxWidth, int bidiFlags, float[] measuredWidth); 1538 1539 /** 1540 * Return the advance widths for the characters in the string. 1541 * 1542 * @param text The text to measure. Cannot be null. 1543 * @param index The index of the first char to to measure 1544 * @param count The number of chars starting with index to measure 1545 * @param widths array to receive the advance widths of the characters. 1546 * Must be at least a large as count. 1547 * @return the actual number of widths returned. 1548 */ 1549 public int getTextWidths(char[] text, int index, int count, 1550 float[] widths) { 1551 if (text == null) { 1552 throw new IllegalArgumentException("text cannot be null"); 1553 } 1554 if ((index | count) < 0 || index + count > text.length 1555 || count > widths.length) { 1556 throw new ArrayIndexOutOfBoundsException(); 1557 } 1558 1559 if (text.length == 0 || count == 0) { 1560 return 0; 1561 } 1562 if (!mHasCompatScaling) { 1563 return native_getTextWidths(mNativePaint, text, index, count, mBidiFlags, widths); 1564 } 1565 1566 final float oldSize = getTextSize(); 1567 setTextSize(oldSize*mCompatScaling); 1568 int res = native_getTextWidths(mNativePaint, text, index, count, mBidiFlags, widths); 1569 setTextSize(oldSize); 1570 for (int i=0; i<res; i++) { 1571 widths[i] *= mInvCompatScaling; 1572 } 1573 return res; 1574 } 1575 1576 /** 1577 * Return the advance widths for the characters in the string. 1578 * 1579 * @param text The text to measure. Cannot be null. 1580 * @param start The index of the first char to to measure 1581 * @param end The end of the text slice to measure 1582 * @param widths array to receive the advance widths of the characters. 1583 * Must be at least a large as (end - start). 1584 * @return the actual number of widths returned. 1585 */ 1586 public int getTextWidths(CharSequence text, int start, int end, 1587 float[] widths) { 1588 if (text == null) { 1589 throw new IllegalArgumentException("text cannot be null"); 1590 } 1591 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1592 throw new IndexOutOfBoundsException(); 1593 } 1594 if (end - start > widths.length) { 1595 throw new ArrayIndexOutOfBoundsException(); 1596 } 1597 1598 if (text.length() == 0 || start == end) { 1599 return 0; 1600 } 1601 if (text instanceof String) { 1602 return getTextWidths((String) text, start, end, widths); 1603 } 1604 if (text instanceof SpannedString || 1605 text instanceof SpannableString) { 1606 return getTextWidths(text.toString(), start, end, widths); 1607 } 1608 if (text instanceof GraphicsOperations) { 1609 return ((GraphicsOperations) text).getTextWidths(start, end, 1610 widths, this); 1611 } 1612 1613 char[] buf = TemporaryBuffer.obtain(end - start); 1614 TextUtils.getChars(text, start, end, buf, 0); 1615 int result = getTextWidths(buf, 0, end - start, widths); 1616 TemporaryBuffer.recycle(buf); 1617 return result; 1618 } 1619 1620 /** 1621 * Return the advance widths for the characters in the string. 1622 * 1623 * @param text The text to measure. Cannot be null. 1624 * @param start The index of the first char to to measure 1625 * @param end The end of the text slice to measure 1626 * @param widths array to receive the advance widths of the characters. 1627 * Must be at least a large as the text. 1628 * @return the number of unichars in the specified text. 1629 */ 1630 public int getTextWidths(String text, int start, int end, float[] widths) { 1631 if (text == null) { 1632 throw new IllegalArgumentException("text cannot be null"); 1633 } 1634 if ((start | end | (end - start) | (text.length() - end)) < 0) { 1635 throw new IndexOutOfBoundsException(); 1636 } 1637 if (end - start > widths.length) { 1638 throw new ArrayIndexOutOfBoundsException(); 1639 } 1640 1641 if (text.length() == 0 || start == end) { 1642 return 0; 1643 } 1644 if (!mHasCompatScaling) { 1645 return native_getTextWidths(mNativePaint, text, start, end, mBidiFlags, widths); 1646 } 1647 1648 final float oldSize = getTextSize(); 1649 setTextSize(oldSize*mCompatScaling); 1650 int res = native_getTextWidths(mNativePaint, text, start, end, mBidiFlags, widths); 1651 setTextSize(oldSize); 1652 for (int i=0; i<res; i++) { 1653 widths[i] *= mInvCompatScaling; 1654 } 1655 return res; 1656 } 1657 1658 /** 1659 * Return the advance widths for the characters in the string. 1660 * 1661 * @param text The text to measure 1662 * @param widths array to receive the advance widths of the characters. 1663 * Must be at least a large as the text. 1664 * @return the number of unichars in the specified text. 1665 */ 1666 public int getTextWidths(String text, float[] widths) { 1667 return getTextWidths(text, 0, text.length(), widths); 1668 } 1669 1670 /** 1671 * Return the glyph Ids for the characters in the string. 1672 * 1673 * @param text The text to measure 1674 * @param start The index of the first char to to measure 1675 * @param end The end of the text slice to measure 1676 * @param contextStart the index of the first character to use for shaping context, 1677 * must be <= start 1678 * @param contextEnd the index past the last character to use for shaping context, 1679 * must be >= end 1680 * @param flags the flags to control the advances, either {@link #DIRECTION_LTR} 1681 * or {@link #DIRECTION_RTL} 1682 * @param glyphs array to receive the glyph Ids of the characters. 1683 * Must be at least a large as the text. 1684 * @return the number of glyphs in the returned array 1685 * 1686 * @hide 1687 * 1688 * Used only for BiDi / RTL Tests 1689 */ 1690 public int getTextGlyphs(String text, int start, int end, int contextStart, int contextEnd, 1691 int flags, char[] glyphs) { 1692 if (text == null) { 1693 throw new IllegalArgumentException("text cannot be null"); 1694 } 1695 if (flags != DIRECTION_LTR && flags != DIRECTION_RTL) { 1696 throw new IllegalArgumentException("unknown flags value: " + flags); 1697 } 1698 if ((start | end | contextStart | contextEnd | (end - start) 1699 | (start - contextStart) | (contextEnd - end) | (text.length() - end) 1700 | (text.length() - contextEnd)) < 0) { 1701 throw new IndexOutOfBoundsException(); 1702 } 1703 if (end - start > glyphs.length) { 1704 throw new ArrayIndexOutOfBoundsException(); 1705 } 1706 return native_getTextGlyphs(mNativePaint, text, start, end, contextStart, contextEnd, 1707 flags, glyphs); 1708 } 1709 1710 /** 1711 * Convenience overload that takes a char array instead of a 1712 * String. 1713 * 1714 * @see #getTextRunAdvances(String, int, int, int, int, int, float[], int) 1715 * @hide 1716 */ 1717 public float getTextRunAdvances(char[] chars, int index, int count, 1718 int contextIndex, int contextCount, int flags, float[] advances, 1719 int advancesIndex) { 1720 1721 if (chars == null) { 1722 throw new IllegalArgumentException("text cannot be null"); 1723 } 1724 if (flags != DIRECTION_LTR && flags != DIRECTION_RTL) { 1725 throw new IllegalArgumentException("unknown flags value: " + flags); 1726 } 1727 if ((index | count | contextIndex | contextCount | advancesIndex 1728 | (index - contextIndex) | (contextCount - count) 1729 | ((contextIndex + contextCount) - (index + count)) 1730 | (chars.length - (contextIndex + contextCount)) 1731 | (advances == null ? 0 : 1732 (advances.length - (advancesIndex + count)))) < 0) { 1733 throw new IndexOutOfBoundsException(); 1734 } 1735 1736 if (chars.length == 0 || count == 0){ 1737 return 0f; 1738 } 1739 if (!mHasCompatScaling) { 1740 return native_getTextRunAdvances(mNativePaint, chars, index, count, 1741 contextIndex, contextCount, flags, advances, advancesIndex); 1742 } 1743 1744 final float oldSize = getTextSize(); 1745 setTextSize(oldSize * mCompatScaling); 1746 float res = native_getTextRunAdvances(mNativePaint, chars, index, count, 1747 contextIndex, contextCount, flags, advances, advancesIndex); 1748 setTextSize(oldSize); 1749 1750 if (advances != null) { 1751 for (int i = advancesIndex, e = i + count; i < e; i++) { 1752 advances[i] *= mInvCompatScaling; 1753 } 1754 } 1755 return res * mInvCompatScaling; // assume errors are not significant 1756 } 1757 1758 /** 1759 * Convenience overload that takes a CharSequence instead of a 1760 * String. 1761 * 1762 * @see #getTextRunAdvances(String, int, int, int, int, int, float[], int) 1763 * @hide 1764 */ 1765 public float getTextRunAdvances(CharSequence text, int start, int end, 1766 int contextStart, int contextEnd, int flags, float[] advances, 1767 int advancesIndex) { 1768 1769 if (text == null) { 1770 throw new IllegalArgumentException("text cannot be null"); 1771 } 1772 if ((start | end | contextStart | contextEnd | advancesIndex | (end - start) 1773 | (start - contextStart) | (contextEnd - end) 1774 | (text.length() - contextEnd) 1775 | (advances == null ? 0 : 1776 (advances.length - advancesIndex - (end - start)))) < 0) { 1777 throw new IndexOutOfBoundsException(); 1778 } 1779 1780 if (text instanceof String) { 1781 return getTextRunAdvances((String) text, start, end, 1782 contextStart, contextEnd, flags, advances, advancesIndex); 1783 } 1784 if (text instanceof SpannedString || 1785 text instanceof SpannableString) { 1786 return getTextRunAdvances(text.toString(), start, end, 1787 contextStart, contextEnd, flags, advances, advancesIndex); 1788 } 1789 if (text instanceof GraphicsOperations) { 1790 return ((GraphicsOperations) text).getTextRunAdvances(start, end, 1791 contextStart, contextEnd, flags, advances, advancesIndex, this); 1792 } 1793 if (text.length() == 0 || end == start) { 1794 return 0f; 1795 } 1796 1797 int contextLen = contextEnd - contextStart; 1798 int len = end - start; 1799 char[] buf = TemporaryBuffer.obtain(contextLen); 1800 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1801 float result = getTextRunAdvances(buf, start - contextStart, len, 1802 0, contextLen, flags, advances, advancesIndex); 1803 TemporaryBuffer.recycle(buf); 1804 return result; 1805 } 1806 1807 /** 1808 * Returns the total advance width for the characters in the run 1809 * between start and end, and if advances is not null, the advance 1810 * assigned to each of these characters (java chars). 1811 * 1812 * <p>The trailing surrogate in a valid surrogate pair is assigned 1813 * an advance of 0. Thus the number of returned advances is 1814 * always equal to count, not to the number of unicode codepoints 1815 * represented by the run. 1816 * 1817 * <p>In the case of conjuncts or combining marks, the total 1818 * advance is assigned to the first logical character, and the 1819 * following characters are assigned an advance of 0. 1820 * 1821 * <p>This generates the sum of the advances of glyphs for 1822 * characters in a reordered cluster as the width of the first 1823 * logical character in the cluster, and 0 for the widths of all 1824 * other characters in the cluster. In effect, such clusters are 1825 * treated like conjuncts. 1826 * 1827 * <p>The shaping bounds limit the amount of context available 1828 * outside start and end that can be used for shaping analysis. 1829 * These bounds typically reflect changes in bidi level or font 1830 * metrics across which shaping does not occur. 1831 * 1832 * @param text the text to measure. Cannot be null. 1833 * @param start the index of the first character to measure 1834 * @param end the index past the last character to measure 1835 * @param contextStart the index of the first character to use for shaping context, 1836 * must be <= start 1837 * @param contextEnd the index past the last character to use for shaping context, 1838 * must be >= end 1839 * @param flags the flags to control the advances, either {@link #DIRECTION_LTR} 1840 * or {@link #DIRECTION_RTL} 1841 * @param advances array to receive the advances, must have room for all advances, 1842 * can be null if only total advance is needed 1843 * @param advancesIndex the position in advances at which to put the 1844 * advance corresponding to the character at start 1845 * @return the total advance 1846 * 1847 * @hide 1848 */ 1849 public float getTextRunAdvances(String text, int start, int end, int contextStart, 1850 int contextEnd, int flags, float[] advances, int advancesIndex) { 1851 1852 if (text == null) { 1853 throw new IllegalArgumentException("text cannot be null"); 1854 } 1855 if (flags != DIRECTION_LTR && flags != DIRECTION_RTL) { 1856 throw new IllegalArgumentException("unknown flags value: " + flags); 1857 } 1858 if ((start | end | contextStart | contextEnd | advancesIndex | (end - start) 1859 | (start - contextStart) | (contextEnd - end) 1860 | (text.length() - contextEnd) 1861 | (advances == null ? 0 : 1862 (advances.length - advancesIndex - (end - start)))) < 0) { 1863 throw new IndexOutOfBoundsException(); 1864 } 1865 1866 if (text.length() == 0 || start == end) { 1867 return 0f; 1868 } 1869 1870 if (!mHasCompatScaling) { 1871 return native_getTextRunAdvances(mNativePaint, text, start, end, 1872 contextStart, contextEnd, flags, advances, advancesIndex); 1873 } 1874 1875 final float oldSize = getTextSize(); 1876 setTextSize(oldSize * mCompatScaling); 1877 float totalAdvance = native_getTextRunAdvances(mNativePaint, text, start, end, 1878 contextStart, contextEnd, flags, advances, advancesIndex); 1879 setTextSize(oldSize); 1880 1881 if (advances != null) { 1882 for (int i = advancesIndex, e = i + (end - start); i < e; i++) { 1883 advances[i] *= mInvCompatScaling; 1884 } 1885 } 1886 return totalAdvance * mInvCompatScaling; // assume errors are insignificant 1887 } 1888 1889 /** 1890 * Returns the next cursor position in the run. This avoids placing the 1891 * cursor between surrogates, between characters that form conjuncts, 1892 * between base characters and combining marks, or within a reordering 1893 * cluster. 1894 * 1895 * <p>ContextStart and offset are relative to the start of text. 1896 * The context is the shaping context for cursor movement, generally 1897 * the bounds of the metric span enclosing the cursor in the direction of 1898 * movement. 1899 * 1900 * <p>If cursorOpt is {@link #CURSOR_AT} and the offset is not a valid 1901 * cursor position, this returns -1. Otherwise this will never return a 1902 * value before contextStart or after contextStart + contextLength. 1903 * 1904 * @param text the text 1905 * @param contextStart the start of the context 1906 * @param contextLength the length of the context 1907 * @param flags either {@link #DIRECTION_RTL} or {@link #DIRECTION_LTR} 1908 * @param offset the cursor position to move from 1909 * @param cursorOpt how to move the cursor, one of {@link #CURSOR_AFTER}, 1910 * {@link #CURSOR_AT_OR_AFTER}, {@link #CURSOR_BEFORE}, 1911 * {@link #CURSOR_AT_OR_BEFORE}, or {@link #CURSOR_AT} 1912 * @return the offset of the next position, or -1 1913 * @hide 1914 */ 1915 public int getTextRunCursor(char[] text, int contextStart, int contextLength, 1916 int flags, int offset, int cursorOpt) { 1917 int contextEnd = contextStart + contextLength; 1918 if (((contextStart | contextEnd | offset | (contextEnd - contextStart) 1919 | (offset - contextStart) | (contextEnd - offset) 1920 | (text.length - contextEnd) | cursorOpt) < 0) 1921 || cursorOpt > CURSOR_OPT_MAX_VALUE) { 1922 throw new IndexOutOfBoundsException(); 1923 } 1924 1925 return native_getTextRunCursor(mNativePaint, text, 1926 contextStart, contextLength, flags, offset, cursorOpt); 1927 } 1928 1929 /** 1930 * Returns the next cursor position in the run. This avoids placing the 1931 * cursor between surrogates, between characters that form conjuncts, 1932 * between base characters and combining marks, or within a reordering 1933 * cluster. 1934 * 1935 * <p>ContextStart, contextEnd, and offset are relative to the start of 1936 * text. The context is the shaping context for cursor movement, generally 1937 * the bounds of the metric span enclosing the cursor in the direction of 1938 * movement. 1939 * 1940 * <p>If cursorOpt is {@link #CURSOR_AT} and the offset is not a valid 1941 * cursor position, this returns -1. Otherwise this will never return a 1942 * value before contextStart or after contextEnd. 1943 * 1944 * @param text the text 1945 * @param contextStart the start of the context 1946 * @param contextEnd the end of the context 1947 * @param flags either {@link #DIRECTION_RTL} or {@link #DIRECTION_LTR} 1948 * @param offset the cursor position to move from 1949 * @param cursorOpt how to move the cursor, one of {@link #CURSOR_AFTER}, 1950 * {@link #CURSOR_AT_OR_AFTER}, {@link #CURSOR_BEFORE}, 1951 * {@link #CURSOR_AT_OR_BEFORE}, or {@link #CURSOR_AT} 1952 * @return the offset of the next position, or -1 1953 * @hide 1954 */ 1955 public int getTextRunCursor(CharSequence text, int contextStart, 1956 int contextEnd, int flags, int offset, int cursorOpt) { 1957 1958 if (text instanceof String || text instanceof SpannedString || 1959 text instanceof SpannableString) { 1960 return getTextRunCursor(text.toString(), contextStart, contextEnd, 1961 flags, offset, cursorOpt); 1962 } 1963 if (text instanceof GraphicsOperations) { 1964 return ((GraphicsOperations) text).getTextRunCursor( 1965 contextStart, contextEnd, flags, offset, cursorOpt, this); 1966 } 1967 1968 int contextLen = contextEnd - contextStart; 1969 char[] buf = TemporaryBuffer.obtain(contextLen); 1970 TextUtils.getChars(text, contextStart, contextEnd, buf, 0); 1971 int result = getTextRunCursor(buf, 0, contextLen, flags, offset - contextStart, cursorOpt); 1972 TemporaryBuffer.recycle(buf); 1973 return result; 1974 } 1975 1976 /** 1977 * Returns the next cursor position in the run. This avoids placing the 1978 * cursor between surrogates, between characters that form conjuncts, 1979 * between base characters and combining marks, or within a reordering 1980 * cluster. 1981 * 1982 * <p>ContextStart, contextEnd, and offset are relative to the start of 1983 * text. The context is the shaping context for cursor movement, generally 1984 * the bounds of the metric span enclosing the cursor in the direction of 1985 * movement. 1986 * 1987 * <p>If cursorOpt is {@link #CURSOR_AT} and the offset is not a valid 1988 * cursor position, this returns -1. Otherwise this will never return a 1989 * value before contextStart or after contextEnd. 1990 * 1991 * @param text the text 1992 * @param contextStart the start of the context 1993 * @param contextEnd the end of the context 1994 * @param flags either {@link #DIRECTION_RTL} or {@link #DIRECTION_LTR} 1995 * @param offset the cursor position to move from 1996 * @param cursorOpt how to move the cursor, one of {@link #CURSOR_AFTER}, 1997 * {@link #CURSOR_AT_OR_AFTER}, {@link #CURSOR_BEFORE}, 1998 * {@link #CURSOR_AT_OR_BEFORE}, or {@link #CURSOR_AT} 1999 * @return the offset of the next position, or -1 2000 * @hide 2001 */ 2002 public int getTextRunCursor(String text, int contextStart, int contextEnd, 2003 int flags, int offset, int cursorOpt) { 2004 if (((contextStart | contextEnd | offset | (contextEnd - contextStart) 2005 | (offset - contextStart) | (contextEnd - offset) 2006 | (text.length() - contextEnd) | cursorOpt) < 0) 2007 || cursorOpt > CURSOR_OPT_MAX_VALUE) { 2008 throw new IndexOutOfBoundsException(); 2009 } 2010 2011 return native_getTextRunCursor(mNativePaint, text, 2012 contextStart, contextEnd, flags, offset, cursorOpt); 2013 } 2014 2015 /** 2016 * Return the path (outline) for the specified text. 2017 * Note: just like Canvas.drawText, this will respect the Align setting in 2018 * the paint. 2019 * 2020 * @param text The text to retrieve the path from 2021 * @param index The index of the first character in text 2022 * @param count The number of characterss starting with index 2023 * @param x The x coordinate of the text's origin 2024 * @param y The y coordinate of the text's origin 2025 * @param path The path to receive the data describing the text. Must 2026 * be allocated by the caller. 2027 */ 2028 public void getTextPath(char[] text, int index, int count, 2029 float x, float y, Path path) { 2030 if ((index | count) < 0 || index + count > text.length) { 2031 throw new ArrayIndexOutOfBoundsException(); 2032 } 2033 native_getTextPath(mNativePaint, mBidiFlags, text, index, count, x, y, 2034 path.ni()); 2035 } 2036 2037 /** 2038 * Return the path (outline) for the specified text. 2039 * Note: just like Canvas.drawText, this will respect the Align setting 2040 * in the paint. 2041 * 2042 * @param text The text to retrieve the path from 2043 * @param start The first character in the text 2044 * @param end 1 past the last charcter in the text 2045 * @param x The x coordinate of the text's origin 2046 * @param y The y coordinate of the text's origin 2047 * @param path The path to receive the data describing the text. Must 2048 * be allocated by the caller. 2049 */ 2050 public void getTextPath(String text, int start, int end, 2051 float x, float y, Path path) { 2052 if ((start | end | (end - start) | (text.length() - end)) < 0) { 2053 throw new IndexOutOfBoundsException(); 2054 } 2055 native_getTextPath(mNativePaint, mBidiFlags, text, start, end, x, y, 2056 path.ni()); 2057 } 2058 2059 /** 2060 * Return in bounds (allocated by the caller) the smallest rectangle that 2061 * encloses all of the characters, with an implied origin at (0,0). 2062 * 2063 * @param text String to measure and return its bounds 2064 * @param start Index of the first char in the string to measure 2065 * @param end 1 past the last char in the string measure 2066 * @param bounds Returns the unioned bounds of all the text. Must be 2067 * allocated by the caller. 2068 */ 2069 public void getTextBounds(String text, int start, int end, Rect bounds) { 2070 if ((start | end | (end - start) | (text.length() - end)) < 0) { 2071 throw new IndexOutOfBoundsException(); 2072 } 2073 if (bounds == null) { 2074 throw new NullPointerException("need bounds Rect"); 2075 } 2076 nativeGetStringBounds(mNativePaint, text, start, end, mBidiFlags, bounds); 2077 } 2078 2079 /** 2080 * Return in bounds (allocated by the caller) the smallest rectangle that 2081 * encloses all of the characters, with an implied origin at (0,0). 2082 * 2083 * @param text Array of chars to measure and return their unioned bounds 2084 * @param index Index of the first char in the array to measure 2085 * @param count The number of chars, beginning at index, to measure 2086 * @param bounds Returns the unioned bounds of all the text. Must be 2087 * allocated by the caller. 2088 */ 2089 public void getTextBounds(char[] text, int index, int count, Rect bounds) { 2090 if ((index | count) < 0 || index + count > text.length) { 2091 throw new ArrayIndexOutOfBoundsException(); 2092 } 2093 if (bounds == null) { 2094 throw new NullPointerException("need bounds Rect"); 2095 } 2096 nativeGetCharArrayBounds(mNativePaint, text, index, count, mBidiFlags, bounds); 2097 } 2098 2099 @Override 2100 protected void finalize() throws Throwable { 2101 try { 2102 finalizer(mNativePaint); 2103 } finally { 2104 super.finalize(); 2105 } 2106 } 2107 2108 private static native int native_init(); 2109 private static native int native_initWithPaint(int paint); 2110 private static native void native_reset(int native_object); 2111 private static native void native_set(int native_dst, int native_src); 2112 private static native int native_getStyle(int native_object); 2113 private static native void native_setStyle(int native_object, int style); 2114 private static native int native_getStrokeCap(int native_object); 2115 private static native void native_setStrokeCap(int native_object, int cap); 2116 private static native int native_getStrokeJoin(int native_object); 2117 private static native void native_setStrokeJoin(int native_object, 2118 int join); 2119 private static native boolean native_getFillPath(int native_object, 2120 int src, int dst); 2121 private static native int native_setShader(int native_object, int shader); 2122 private static native int native_setColorFilter(int native_object, 2123 int filter); 2124 private static native int native_setXfermode(int native_object, 2125 int xfermode); 2126 private static native int native_setPathEffect(int native_object, 2127 int effect); 2128 private static native int native_setMaskFilter(int native_object, 2129 int maskfilter); 2130 private static native int native_setTypeface(int native_object, 2131 int typeface); 2132 private static native int native_setRasterizer(int native_object, 2133 int rasterizer); 2134 2135 private static native int native_getTextAlign(int native_object); 2136 private static native void native_setTextAlign(int native_object, 2137 int align); 2138 2139 private static native void native_setTextLocale(int native_object, 2140 String locale); 2141 2142 private static native int native_getTextWidths(int native_object, 2143 char[] text, int index, int count, int bidiFlags, float[] widths); 2144 private static native int native_getTextWidths(int native_object, 2145 String text, int start, int end, int bidiFlags, float[] widths); 2146 2147 private static native int native_getTextGlyphs(int native_object, 2148 String text, int start, int end, int contextStart, int contextEnd, 2149 int flags, char[] glyphs); 2150 2151 private static native float native_getTextRunAdvances(int native_object, 2152 char[] text, int index, int count, int contextIndex, int contextCount, 2153 int flags, float[] advances, int advancesIndex); 2154 private static native float native_getTextRunAdvances(int native_object, 2155 String text, int start, int end, int contextStart, int contextEnd, 2156 int flags, float[] advances, int advancesIndex); 2157 2158 private native int native_getTextRunCursor(int native_object, char[] text, 2159 int contextStart, int contextLength, int flags, int offset, int cursorOpt); 2160 private native int native_getTextRunCursor(int native_object, String text, 2161 int contextStart, int contextEnd, int flags, int offset, int cursorOpt); 2162 2163 private static native void native_getTextPath(int native_object, int bidiFlags, 2164 char[] text, int index, int count, float x, float y, int path); 2165 private static native void native_getTextPath(int native_object, int bidiFlags, 2166 String text, int start, int end, float x, float y, int path); 2167 private static native void nativeGetStringBounds(int nativePaint, 2168 String text, int start, int end, int bidiFlags, Rect bounds); 2169 private static native void nativeGetCharArrayBounds(int nativePaint, 2170 char[] text, int index, int count, int bidiFlags, Rect bounds); 2171 private static native void finalizer(int nativePaint); 2172 } 2173
