VectorDrawable.java revision 35289f12d6cb0f0db67489876c805ad4a3cbd5f6
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15package android.graphics.drawable; 16 17import android.annotation.NonNull; 18import android.annotation.Nullable; 19import android.content.res.ColorStateList; 20import android.content.res.Resources; 21import android.content.res.Resources.Theme; 22import android.content.res.TypedArray; 23import android.graphics.Bitmap; 24import android.graphics.Canvas; 25import android.graphics.Color; 26import android.graphics.ColorFilter; 27import android.graphics.Insets; 28import android.graphics.Matrix; 29import android.graphics.Paint; 30import android.graphics.Path; 31import android.graphics.PathMeasure; 32import android.graphics.PixelFormat; 33import android.graphics.PorterDuffColorFilter; 34import android.graphics.Rect; 35import android.graphics.PorterDuff.Mode; 36import android.util.ArrayMap; 37import android.util.AttributeSet; 38import android.util.DisplayMetrics; 39import android.util.LayoutDirection; 40import android.util.Log; 41import android.util.MathUtils; 42import android.util.PathParser; 43import android.util.Xml; 44 45import com.android.internal.R; 46 47import org.xmlpull.v1.XmlPullParser; 48import org.xmlpull.v1.XmlPullParserException; 49 50import java.io.IOException; 51import java.util.ArrayList; 52import java.util.Stack; 53 54/** 55 * This lets you create a drawable based on an XML vector graphic. It can be 56 * defined in an XML file with the <code><vector></code> element. 57 * <p/> 58 * The vector drawable has the following elements: 59 * <p/> 60 * <dt><code><vector></code></dt> 61 * <dl> 62 * <dd>Used to define a vector drawable 63 * <dl> 64 * <dt><code>android:name</code></dt> 65 * <dd>Defines the name of this vector drawable.</dd> 66 * <dt><code>android:width</code></dt> 67 * <dd>Used to define the intrinsic width of the drawable. 68 * This support all the dimension units, normally specified with dp.</dd> 69 * <dt><code>android:height</code></dt> 70 * <dd>Used to define the intrinsic height the drawable. 71 * This support all the dimension units, normally specified with dp.</dd> 72 * <dt><code>android:viewportWidth</code></dt> 73 * <dd>Used to define the width of the viewport space. Viewport is basically 74 * the virtual canvas where the paths are drawn on.</dd> 75 * <dt><code>android:viewportHeight</code></dt> 76 * <dd>Used to define the height of the viewport space. Viewport is basically 77 * the virtual canvas where the paths are drawn on.</dd> 78 * <dt><code>android:tint</code></dt> 79 * <dd>The color to apply to the drawable as a tint. By default, no tint is applied.</dd> 80 * <dt><code>android:tintMode</code></dt> 81 * <dd>The Porter-Duff blending mode for the tint color. The default value is src_in.</dd> 82 * <dt><code>android:autoMirrored</code></dt> 83 * <dd>Indicates if the drawable needs to be mirrored when its layout direction is 84 * RTL (right-to-left).</dd> 85 * <dt><code>android:alpha</code></dt> 86 * <dd>The opacity of this drawable.</dd> 87 * </dl></dd> 88 * </dl> 89 * 90 * <dl> 91 * <dt><code><group></code></dt> 92 * <dd>Defines a group of paths or subgroups, plus transformation information. 93 * The transformations are defined in the same coordinates as the viewport. 94 * And the transformations are applied in the order of scale, rotate then translate. 95 * <dl> 96 * <dt><code>android:name</code></dt> 97 * <dd>Defines the name of the group.</dd> 98 * <dt><code>android:rotation</code></dt> 99 * <dd>The degrees of rotation of the group.</dd> 100 * <dt><code>android:pivotX</code></dt> 101 * <dd>The X coordinate of the pivot for the scale and rotation of the group. 102 * This is defined in the viewport space.</dd> 103 * <dt><code>android:pivotY</code></dt> 104 * <dd>The Y coordinate of the pivot for the scale and rotation of the group. 105 * This is defined in the viewport space.</dd> 106 * <dt><code>android:scaleX</code></dt> 107 * <dd>The amount of scale on the X Coordinate.</dd> 108 * <dt><code>android:scaleY</code></dt> 109 * <dd>The amount of scale on the Y coordinate.</dd> 110 * <dt><code>android:translateX</code></dt> 111 * <dd>The amount of translation on the X coordinate. 112 * This is defined in the viewport space.</dd> 113 * <dt><code>android:translateY</code></dt> 114 * <dd>The amount of translation on the Y coordinate. 115 * This is defined in the viewport space.</dd> 116 * </dl></dd> 117 * </dl> 118 * 119 * <dl> 120 * <dt><code><path></code></dt> 121 * <dd>Defines paths to be drawn. 122 * <dl> 123 * <dt><code>android:name</code></dt> 124 * <dd>Defines the name of the path.</dd> 125 * <dt><code>android:pathData</code></dt> 126 * <dd>Defines path data using exactly same format as "d" attribute 127 * in the SVG's path data. This is defined in the viewport space.</dd> 128 * <dt><code>android:fillColor</code></dt> 129 * <dd>Defines the color to fill the path (none if not present).</dd> 130 * <dt><code>android:strokeColor</code></dt> 131 * <dd>Defines the color to draw the path outline (none if not present).</dd> 132 * <dt><code>android:strokeWidth</code></dt> 133 * <dd>The width a path stroke.</dd> 134 * <dt><code>android:strokeAlpha</code></dt> 135 * <dd>The opacity of a path stroke.</dd> 136 * <dt><code>android:fillAlpha</code></dt> 137 * <dd>The opacity to fill the path with.</dd> 138 * <dt><code>android:trimPathStart</code></dt> 139 * <dd>The fraction of the path to trim from the start, in the range from 0 to 1.</dd> 140 * <dt><code>android:trimPathEnd</code></dt> 141 * <dd>The fraction of the path to trim from the end, in the range from 0 to 1.</dd> 142 * <dt><code>android:trimPathOffset</code></dt> 143 * <dd>Shift trim region (allows showed region to include the start and end), in the range 144 * from 0 to 1.</dd> 145 * <dt><code>android:strokeLineCap</code></dt> 146 * <dd>Sets the linecap for a stroked path: butt, round, square.</dd> 147 * <dt><code>android:strokeLineJoin</code></dt> 148 * <dd>Sets the lineJoin for a stroked path: miter,round,bevel.</dd> 149 * <dt><code>android:strokeMiterLimit</code></dt> 150 * <dd>Sets the Miter limit for a stroked path.</dd> 151 * </dl></dd> 152 * </dl> 153 * 154 * <dl> 155 * <dt><code><clip-path></code></dt> 156 * <dd>Defines path to be the current clip. Note that the clip path only apply to 157 * the current group and its children. 158 * <dl> 159 * <dt><code>android:name</code></dt> 160 * <dd>Defines the name of the clip path.</dd> 161 * <dt><code>android:pathData</code></dt> 162 * <dd>Defines clip path using the same format as "d" attribute 163 * in the SVG's path data.</dd> 164 * </dl></dd> 165 * </dl> 166 * <li>Here is a simple VectorDrawable in this vectordrawable.xml file. 167 * <pre> 168 * <vector xmlns:android="http://schemas.android.com/apk/res/android" 169 * android:height="64dp" 170 * android:width="64dp" 171 * android:viewportHeight="600" 172 * android:viewportWidth="600" > 173 * <group 174 * android:name="rotationGroup" 175 * android:pivotX="300.0" 176 * android:pivotY="300.0" 177 * android:rotation="45.0" > 178 * <path 179 * android:name="v" 180 * android:fillColor="#000000" 181 * android:pathData="M300,70 l 0,-70 70,70 0,0 -70,70z" /> 182 * </group> 183 * </vector> 184 * </pre></li> 185 */ 186 187public class VectorDrawable extends Drawable { 188 private static final String LOGTAG = VectorDrawable.class.getSimpleName(); 189 190 private static final String SHAPE_CLIP_PATH = "clip-path"; 191 private static final String SHAPE_GROUP = "group"; 192 private static final String SHAPE_PATH = "path"; 193 private static final String SHAPE_VECTOR = "vector"; 194 195 private static final int LINECAP_BUTT = 0; 196 private static final int LINECAP_ROUND = 1; 197 private static final int LINECAP_SQUARE = 2; 198 199 private static final int LINEJOIN_MITER = 0; 200 private static final int LINEJOIN_ROUND = 1; 201 private static final int LINEJOIN_BEVEL = 2; 202 203 // Cap the bitmap size, such that it won't hurt the performance too much 204 // and it won't crash due to a very large scale. 205 // The drawable will look blurry above this size. 206 private static final int MAX_CACHED_BITMAP_SIZE = 2048; 207 208 private static final boolean DBG_VECTOR_DRAWABLE = false; 209 210 private VectorDrawableState mVectorState; 211 212 private PorterDuffColorFilter mTintFilter; 213 private ColorFilter mColorFilter; 214 215 private boolean mMutated; 216 217 // AnimatedVectorDrawable needs to turn off the cache all the time, otherwise, 218 // caching the bitmap by default is allowed. 219 private boolean mAllowCaching = true; 220 221 // Given the virtual display setup, the dpi can be different than the inflation's dpi. 222 // Therefore, we need to scale the values we got from the getDimension*(). 223 private int mDpiScaledWidth = 0; 224 private int mDpiScaledHeight = 0; 225 private Insets mDpiScaleInsets = Insets.NONE; 226 227 // Temp variable, only for saving "new" operation at the draw() time. 228 private final float[] mTmpFloats = new float[9]; 229 private final Matrix mTmpMatrix = new Matrix(); 230 private final Rect mTmpBounds = new Rect(); 231 232 public VectorDrawable() { 233 this(null, null); 234 } 235 236 private VectorDrawable(@NonNull VectorDrawableState state, @Nullable Resources res) { 237 if (state == null) { 238 mVectorState = new VectorDrawableState(); 239 } else { 240 mVectorState = state; 241 mTintFilter = updateTintFilter(mTintFilter, state.mTint, state.mTintMode); 242 } 243 updateDimensionInfo(res, false); 244 } 245 246 @Override 247 public Drawable mutate() { 248 if (!mMutated && super.mutate() == this) { 249 mVectorState = new VectorDrawableState(mVectorState); 250 mMutated = true; 251 } 252 return this; 253 } 254 255 /** 256 * @hide 257 */ 258 public void clearMutated() { 259 super.clearMutated(); 260 mMutated = false; 261 } 262 263 Object getTargetByName(String name) { 264 return mVectorState.mVPathRenderer.mVGTargetsMap.get(name); 265 } 266 267 @Override 268 public ConstantState getConstantState() { 269 mVectorState.mChangingConfigurations = getChangingConfigurations(); 270 return mVectorState; 271 } 272 273 @Override 274 public void draw(Canvas canvas) { 275 // We will offset the bounds for drawBitmap, so copyBounds() here instead 276 // of getBounds(). 277 copyBounds(mTmpBounds); 278 if (mTmpBounds.width() <= 0 || mTmpBounds.height() <= 0) { 279 // Nothing to draw 280 return; 281 } 282 283 // Color filters always override tint filters. 284 final ColorFilter colorFilter = (mColorFilter == null ? mTintFilter : mColorFilter); 285 286 // The imageView can scale the canvas in different ways, in order to 287 // avoid blurry scaling, we have to draw into a bitmap with exact pixel 288 // size first. This bitmap size is determined by the bounds and the 289 // canvas scale. 290 canvas.getMatrix(mTmpMatrix); 291 mTmpMatrix.getValues(mTmpFloats); 292 float canvasScaleX = Math.abs(mTmpFloats[Matrix.MSCALE_X]); 293 float canvasScaleY = Math.abs(mTmpFloats[Matrix.MSCALE_Y]); 294 int scaledWidth = (int) (mTmpBounds.width() * canvasScaleX); 295 int scaledHeight = (int) (mTmpBounds.height() * canvasScaleY); 296 scaledWidth = Math.min(MAX_CACHED_BITMAP_SIZE, scaledWidth); 297 scaledHeight = Math.min(MAX_CACHED_BITMAP_SIZE, scaledHeight); 298 299 if (scaledWidth <= 0 || scaledHeight <= 0) { 300 return; 301 } 302 303 final int saveCount = canvas.save(); 304 canvas.translate(mTmpBounds.left, mTmpBounds.top); 305 306 // Handle RTL mirroring. 307 final boolean needMirroring = needMirroring(); 308 if (needMirroring) { 309 canvas.translate(mTmpBounds.width(), 0); 310 canvas.scale(-1.0f, 1.0f); 311 } 312 313 // At this point, canvas has been translated to the right position. 314 // And we use this bound for the destination rect for the drawBitmap, so 315 // we offset to (0, 0); 316 mTmpBounds.offsetTo(0, 0); 317 318 mVectorState.createCachedBitmapIfNeeded(scaledWidth, scaledHeight); 319 if (!mAllowCaching) { 320 mVectorState.updateCachedBitmap(scaledWidth, scaledHeight); 321 } else { 322 if (!mVectorState.canReuseCache()) { 323 mVectorState.updateCachedBitmap(scaledWidth, scaledHeight); 324 mVectorState.updateCacheStates(); 325 } 326 } 327 mVectorState.drawCachedBitmapWithRootAlpha(canvas, colorFilter, mTmpBounds); 328 canvas.restoreToCount(saveCount); 329 } 330 331 @Override 332 public int getAlpha() { 333 return mVectorState.mVPathRenderer.getRootAlpha(); 334 } 335 336 @Override 337 public void setAlpha(int alpha) { 338 if (mVectorState.mVPathRenderer.getRootAlpha() != alpha) { 339 mVectorState.mVPathRenderer.setRootAlpha(alpha); 340 invalidateSelf(); 341 } 342 } 343 344 @Override 345 public void setColorFilter(ColorFilter colorFilter) { 346 mColorFilter = colorFilter; 347 invalidateSelf(); 348 } 349 350 @Override 351 public ColorFilter getColorFilter() { 352 return mColorFilter; 353 } 354 355 @Override 356 public void setTintList(ColorStateList tint) { 357 final VectorDrawableState state = mVectorState; 358 if (state.mTint != tint) { 359 state.mTint = tint; 360 mTintFilter = updateTintFilter(mTintFilter, tint, state.mTintMode); 361 invalidateSelf(); 362 } 363 } 364 365 @Override 366 public void setTintMode(Mode tintMode) { 367 final VectorDrawableState state = mVectorState; 368 if (state.mTintMode != tintMode) { 369 state.mTintMode = tintMode; 370 mTintFilter = updateTintFilter(mTintFilter, state.mTint, tintMode); 371 invalidateSelf(); 372 } 373 } 374 375 @Override 376 public boolean isStateful() { 377 return super.isStateful() || (mVectorState != null && mVectorState.mTint != null 378 && mVectorState.mTint.isStateful()); 379 } 380 381 @Override 382 protected boolean onStateChange(int[] stateSet) { 383 final VectorDrawableState state = mVectorState; 384 if (state.mTint != null && state.mTintMode != null) { 385 mTintFilter = updateTintFilter(mTintFilter, state.mTint, state.mTintMode); 386 invalidateSelf(); 387 return true; 388 } 389 return false; 390 } 391 392 @Override 393 public int getOpacity() { 394 return PixelFormat.TRANSLUCENT; 395 } 396 397 @Override 398 public int getIntrinsicWidth() { 399 return mDpiScaledWidth; 400 } 401 402 @Override 403 public int getIntrinsicHeight() { 404 return mDpiScaledHeight; 405 } 406 407 /** @hide */ 408 @Override 409 public Insets getOpticalInsets() { 410 return mDpiScaleInsets; 411 } 412 413 /* 414 * Update the VectorDrawable dimension since the res can be in different Dpi now. 415 * Basically, when a new instance is created or getDimension() is called, we should update 416 * the current VectorDrawable's dimension information. 417 * Only after updateStateFromTypedArray() is called, we should called this and update the 418 * constant state's dpi info, i.e. updateConstantStateDensity == true. 419 */ 420 void updateDimensionInfo(@Nullable Resources res, boolean updateConstantStateDensity) { 421 if (res != null) { 422 final int densityDpi = res.getDisplayMetrics().densityDpi; 423 final int targetDensity = densityDpi == 0 ? DisplayMetrics.DENSITY_DEFAULT : densityDpi; 424 425 if (updateConstantStateDensity) { 426 mVectorState.mVPathRenderer.mTargetDensity = targetDensity; 427 } else { 428 final int constantStateDensity = mVectorState.mVPathRenderer.mTargetDensity; 429 if (targetDensity != constantStateDensity && constantStateDensity != 0) { 430 mDpiScaledWidth = Bitmap.scaleFromDensity( 431 (int) mVectorState.mVPathRenderer.mBaseWidth, constantStateDensity, 432 targetDensity); 433 mDpiScaledHeight = Bitmap.scaleFromDensity( 434 (int) mVectorState.mVPathRenderer.mBaseHeight,constantStateDensity, 435 targetDensity); 436 final int left = Bitmap.scaleFromDensity( 437 mVectorState.mVPathRenderer.mOpticalInsets.left, constantStateDensity, 438 targetDensity); 439 final int right = Bitmap.scaleFromDensity( 440 mVectorState.mVPathRenderer.mOpticalInsets.right, constantStateDensity, 441 targetDensity); 442 final int top = Bitmap.scaleFromDensity( 443 mVectorState.mVPathRenderer.mOpticalInsets.top, constantStateDensity, 444 targetDensity); 445 final int bottom = Bitmap.scaleFromDensity( 446 mVectorState.mVPathRenderer.mOpticalInsets.bottom, constantStateDensity, 447 targetDensity); 448 mDpiScaleInsets = Insets.of(left, top, right, bottom); 449 return; 450 } 451 } 452 } 453 // For all the other cases, like either res is null, constant state is not initialized or 454 // target density is the same as the constant state, we will just use the constant state 455 // dimensions. 456 mDpiScaledWidth = (int) mVectorState.mVPathRenderer.mBaseWidth; 457 mDpiScaledHeight = (int) mVectorState.mVPathRenderer.mBaseHeight; 458 mDpiScaleInsets = mVectorState.mVPathRenderer.mOpticalInsets; 459 } 460 461 @Override 462 public boolean canApplyTheme() { 463 return (mVectorState != null && mVectorState.canApplyTheme()) || super.canApplyTheme(); 464 } 465 466 @Override 467 public void applyTheme(Theme t) { 468 super.applyTheme(t); 469 470 final VectorDrawableState state = mVectorState; 471 if (state == null) { 472 return; 473 } 474 475 if (state.mThemeAttrs != null) { 476 final TypedArray a = t.resolveAttributes( 477 state.mThemeAttrs, R.styleable.VectorDrawable); 478 try { 479 state.mCacheDirty = true; 480 updateStateFromTypedArray(a); 481 updateDimensionInfo(t.getResources(), true /* update constant state */); 482 } catch (XmlPullParserException e) { 483 throw new RuntimeException(e); 484 } finally { 485 a.recycle(); 486 } 487 } 488 489 // Apply theme to contained color state list. 490 if (state.mTint != null && state.mTint.canApplyTheme()) { 491 state.mTint = state.mTint.obtainForTheme(t); 492 } 493 494 final VPathRenderer path = state.mVPathRenderer; 495 if (path != null && path.canApplyTheme()) { 496 path.applyTheme(t); 497 } 498 499 // Update local state. 500 mTintFilter = updateTintFilter(mTintFilter, state.mTint, state.mTintMode); 501 } 502 503 /** 504 * The size of a pixel when scaled from the intrinsic dimension to the viewport dimension. 505 * This is used to calculate the path animation accuracy. 506 * 507 * @hide 508 */ 509 public float getPixelSize() { 510 if (mVectorState == null || mVectorState.mVPathRenderer == null || 511 mVectorState.mVPathRenderer.mBaseWidth == 0 || 512 mVectorState.mVPathRenderer.mBaseHeight == 0 || 513 mVectorState.mVPathRenderer.mViewportHeight == 0 || 514 mVectorState.mVPathRenderer.mViewportWidth == 0) { 515 return 1; // fall back to 1:1 pixel mapping. 516 } 517 float intrinsicWidth = mVectorState.mVPathRenderer.mBaseWidth; 518 float intrinsicHeight = mVectorState.mVPathRenderer.mBaseHeight; 519 float viewportWidth = mVectorState.mVPathRenderer.mViewportWidth; 520 float viewportHeight = mVectorState.mVPathRenderer.mViewportHeight; 521 float scaleX = viewportWidth / intrinsicWidth; 522 float scaleY = viewportHeight / intrinsicHeight; 523 return Math.min(scaleX, scaleY); 524 } 525 526 /** @hide */ 527 public static VectorDrawable create(Resources resources, int rid) { 528 try { 529 final XmlPullParser parser = resources.getXml(rid); 530 final AttributeSet attrs = Xml.asAttributeSet(parser); 531 int type; 532 while ((type=parser.next()) != XmlPullParser.START_TAG && 533 type != XmlPullParser.END_DOCUMENT) { 534 // Empty loop 535 } 536 if (type != XmlPullParser.START_TAG) { 537 throw new XmlPullParserException("No start tag found"); 538 } 539 540 final VectorDrawable drawable = new VectorDrawable(); 541 drawable.inflate(resources, parser, attrs); 542 543 return drawable; 544 } catch (XmlPullParserException e) { 545 Log.e(LOGTAG, "parser error", e); 546 } catch (IOException e) { 547 Log.e(LOGTAG, "parser error", e); 548 } 549 return null; 550 } 551 552 private static int applyAlpha(int color, float alpha) { 553 int alphaBytes = Color.alpha(color); 554 color &= 0x00FFFFFF; 555 color |= ((int) (alphaBytes * alpha)) << 24; 556 return color; 557 } 558 559 @Override 560 public void inflate(Resources res, XmlPullParser parser, AttributeSet attrs, Theme theme) 561 throws XmlPullParserException, IOException { 562 final VectorDrawableState state = mVectorState; 563 final VPathRenderer pathRenderer = new VPathRenderer(); 564 state.mVPathRenderer = pathRenderer; 565 566 final TypedArray a = obtainAttributes(res, theme, attrs, R.styleable.VectorDrawable); 567 updateStateFromTypedArray(a); 568 a.recycle(); 569 570 state.mCacheDirty = true; 571 inflateInternal(res, parser, attrs, theme); 572 573 mTintFilter = updateTintFilter(mTintFilter, state.mTint, state.mTintMode); 574 updateDimensionInfo(res, true /* update constant state */); 575 } 576 577 private void updateStateFromTypedArray(TypedArray a) throws XmlPullParserException { 578 final VectorDrawableState state = mVectorState; 579 final VPathRenderer pathRenderer = state.mVPathRenderer; 580 581 // Account for any configuration changes. 582 state.mChangingConfigurations |= a.getChangingConfigurations(); 583 584 // Extract the theme attributes, if any. 585 state.mThemeAttrs = a.extractThemeAttrs(); 586 587 final int tintMode = a.getInt(R.styleable.VectorDrawable_tintMode, -1); 588 if (tintMode != -1) { 589 state.mTintMode = Drawable.parseTintMode(tintMode, Mode.SRC_IN); 590 } 591 592 final ColorStateList tint = a.getColorStateList(R.styleable.VectorDrawable_tint); 593 if (tint != null) { 594 state.mTint = tint; 595 } 596 597 state.mAutoMirrored = a.getBoolean( 598 R.styleable.VectorDrawable_autoMirrored, state.mAutoMirrored); 599 600 pathRenderer.mViewportWidth = a.getFloat( 601 R.styleable.VectorDrawable_viewportWidth, pathRenderer.mViewportWidth); 602 pathRenderer.mViewportHeight = a.getFloat( 603 R.styleable.VectorDrawable_viewportHeight, pathRenderer.mViewportHeight); 604 605 if (pathRenderer.mViewportWidth <= 0) { 606 throw new XmlPullParserException(a.getPositionDescription() + 607 "<vector> tag requires viewportWidth > 0"); 608 } else if (pathRenderer.mViewportHeight <= 0) { 609 throw new XmlPullParserException(a.getPositionDescription() + 610 "<vector> tag requires viewportHeight > 0"); 611 } 612 613 pathRenderer.mBaseWidth = a.getDimension( 614 R.styleable.VectorDrawable_width, pathRenderer.mBaseWidth); 615 pathRenderer.mBaseHeight = a.getDimension( 616 R.styleable.VectorDrawable_height, pathRenderer.mBaseHeight); 617 618 if (pathRenderer.mBaseWidth <= 0) { 619 throw new XmlPullParserException(a.getPositionDescription() + 620 "<vector> tag requires width > 0"); 621 } else if (pathRenderer.mBaseHeight <= 0) { 622 throw new XmlPullParserException(a.getPositionDescription() + 623 "<vector> tag requires height > 0"); 624 } 625 626 final int insetLeft = a.getDimensionPixelSize( 627 R.styleable.VectorDrawable_opticalInsetLeft, pathRenderer.mOpticalInsets.left); 628 final int insetTop = a.getDimensionPixelSize( 629 R.styleable.VectorDrawable_opticalInsetTop, pathRenderer.mOpticalInsets.top); 630 final int insetRight = a.getDimensionPixelSize( 631 R.styleable.VectorDrawable_opticalInsetRight, pathRenderer.mOpticalInsets.right); 632 final int insetBottom = a.getDimensionPixelSize( 633 R.styleable.VectorDrawable_opticalInsetBottom, pathRenderer.mOpticalInsets.bottom); 634 pathRenderer.mOpticalInsets = Insets.of(insetLeft, insetTop, insetRight, insetBottom); 635 636 final float alphaInFloat = a.getFloat(R.styleable.VectorDrawable_alpha, 637 pathRenderer.getAlpha()); 638 pathRenderer.setAlpha(alphaInFloat); 639 640 final String name = a.getString(R.styleable.VectorDrawable_name); 641 if (name != null) { 642 pathRenderer.mRootName = name; 643 pathRenderer.mVGTargetsMap.put(name, pathRenderer); 644 } 645 } 646 647 private void inflateInternal(Resources res, XmlPullParser parser, AttributeSet attrs, 648 Theme theme) throws XmlPullParserException, IOException { 649 final VectorDrawableState state = mVectorState; 650 final VPathRenderer pathRenderer = state.mVPathRenderer; 651 boolean noPathTag = true; 652 653 // Use a stack to help to build the group tree. 654 // The top of the stack is always the current group. 655 final Stack<VGroup> groupStack = new Stack<VGroup>(); 656 groupStack.push(pathRenderer.mRootGroup); 657 658 int eventType = parser.getEventType(); 659 while (eventType != XmlPullParser.END_DOCUMENT) { 660 if (eventType == XmlPullParser.START_TAG) { 661 final String tagName = parser.getName(); 662 final VGroup currentGroup = groupStack.peek(); 663 664 if (SHAPE_PATH.equals(tagName)) { 665 final VFullPath path = new VFullPath(); 666 path.inflate(res, attrs, theme); 667 currentGroup.mChildren.add(path); 668 if (path.getPathName() != null) { 669 pathRenderer.mVGTargetsMap.put(path.getPathName(), path); 670 } 671 noPathTag = false; 672 state.mChangingConfigurations |= path.mChangingConfigurations; 673 } else if (SHAPE_CLIP_PATH.equals(tagName)) { 674 final VClipPath path = new VClipPath(); 675 path.inflate(res, attrs, theme); 676 currentGroup.mChildren.add(path); 677 if (path.getPathName() != null) { 678 pathRenderer.mVGTargetsMap.put(path.getPathName(), path); 679 } 680 state.mChangingConfigurations |= path.mChangingConfigurations; 681 } else if (SHAPE_GROUP.equals(tagName)) { 682 VGroup newChildGroup = new VGroup(); 683 newChildGroup.inflate(res, attrs, theme); 684 currentGroup.mChildren.add(newChildGroup); 685 groupStack.push(newChildGroup); 686 if (newChildGroup.getGroupName() != null) { 687 pathRenderer.mVGTargetsMap.put(newChildGroup.getGroupName(), 688 newChildGroup); 689 } 690 state.mChangingConfigurations |= newChildGroup.mChangingConfigurations; 691 } 692 } else if (eventType == XmlPullParser.END_TAG) { 693 final String tagName = parser.getName(); 694 if (SHAPE_GROUP.equals(tagName)) { 695 groupStack.pop(); 696 } 697 } 698 eventType = parser.next(); 699 } 700 701 // Print the tree out for debug. 702 if (DBG_VECTOR_DRAWABLE) { 703 printGroupTree(pathRenderer.mRootGroup, 0); 704 } 705 706 if (noPathTag) { 707 final StringBuffer tag = new StringBuffer(); 708 709 if (tag.length() > 0) { 710 tag.append(" or "); 711 } 712 tag.append(SHAPE_PATH); 713 714 throw new XmlPullParserException("no " + tag + " defined"); 715 } 716 } 717 718 private void printGroupTree(VGroup currentGroup, int level) { 719 String indent = ""; 720 for (int i = 0; i < level; i++) { 721 indent += " "; 722 } 723 // Print the current node 724 Log.v(LOGTAG, indent + "current group is :" + currentGroup.getGroupName() 725 + " rotation is " + currentGroup.mRotate); 726 Log.v(LOGTAG, indent + "matrix is :" + currentGroup.getLocalMatrix().toString()); 727 // Then print all the children groups 728 for (int i = 0; i < currentGroup.mChildren.size(); i++) { 729 Object child = currentGroup.mChildren.get(i); 730 if (child instanceof VGroup) { 731 printGroupTree((VGroup) child, level + 1); 732 } 733 } 734 } 735 736 @Override 737 public int getChangingConfigurations() { 738 return super.getChangingConfigurations() | mVectorState.getChangingConfigurations(); 739 } 740 741 void setAllowCaching(boolean allowCaching) { 742 mAllowCaching = allowCaching; 743 } 744 745 private boolean needMirroring() { 746 return isAutoMirrored() && getLayoutDirection() == LayoutDirection.RTL; 747 } 748 749 @Override 750 public void setAutoMirrored(boolean mirrored) { 751 if (mVectorState.mAutoMirrored != mirrored) { 752 mVectorState.mAutoMirrored = mirrored; 753 invalidateSelf(); 754 } 755 } 756 757 @Override 758 public boolean isAutoMirrored() { 759 return mVectorState.mAutoMirrored; 760 } 761 762 private static class VectorDrawableState extends ConstantState { 763 int[] mThemeAttrs; 764 int mChangingConfigurations; 765 VPathRenderer mVPathRenderer; 766 ColorStateList mTint = null; 767 Mode mTintMode = DEFAULT_TINT_MODE; 768 boolean mAutoMirrored; 769 770 Bitmap mCachedBitmap; 771 int[] mCachedThemeAttrs; 772 ColorStateList mCachedTint; 773 Mode mCachedTintMode; 774 int mCachedRootAlpha; 775 boolean mCachedAutoMirrored; 776 boolean mCacheDirty; 777 /** Temporary paint object used to draw cached bitmaps. */ 778 Paint mTempPaint; 779 780 // Deep copy for mutate() or implicitly mutate. 781 public VectorDrawableState(VectorDrawableState copy) { 782 if (copy != null) { 783 mThemeAttrs = copy.mThemeAttrs; 784 mChangingConfigurations = copy.mChangingConfigurations; 785 mVPathRenderer = new VPathRenderer(copy.mVPathRenderer); 786 if (copy.mVPathRenderer.mFillPaint != null) { 787 mVPathRenderer.mFillPaint = new Paint(copy.mVPathRenderer.mFillPaint); 788 } 789 if (copy.mVPathRenderer.mStrokePaint != null) { 790 mVPathRenderer.mStrokePaint = new Paint(copy.mVPathRenderer.mStrokePaint); 791 } 792 mTint = copy.mTint; 793 mTintMode = copy.mTintMode; 794 mAutoMirrored = copy.mAutoMirrored; 795 } 796 } 797 798 public void drawCachedBitmapWithRootAlpha(Canvas canvas, ColorFilter filter, 799 Rect originalBounds) { 800 // The bitmap's size is the same as the bounds. 801 final Paint p = getPaint(filter); 802 canvas.drawBitmap(mCachedBitmap, null, originalBounds, p); 803 } 804 805 public boolean hasTranslucentRoot() { 806 return mVPathRenderer.getRootAlpha() < 255; 807 } 808 809 /** 810 * @return null when there is no need for alpha paint. 811 */ 812 public Paint getPaint(ColorFilter filter) { 813 if (!hasTranslucentRoot() && filter == null) { 814 return null; 815 } 816 817 if (mTempPaint == null) { 818 mTempPaint = new Paint(); 819 mTempPaint.setFilterBitmap(true); 820 } 821 mTempPaint.setAlpha(mVPathRenderer.getRootAlpha()); 822 mTempPaint.setColorFilter(filter); 823 return mTempPaint; 824 } 825 826 public void updateCachedBitmap(int width, int height) { 827 mCachedBitmap.eraseColor(Color.TRANSPARENT); 828 Canvas tmpCanvas = new Canvas(mCachedBitmap); 829 mVPathRenderer.draw(tmpCanvas, width, height, null); 830 } 831 832 public void createCachedBitmapIfNeeded(int width, int height) { 833 if (mCachedBitmap == null || !canReuseBitmap(width, height)) { 834 mCachedBitmap = Bitmap.createBitmap(width, height, 835 Bitmap.Config.ARGB_8888); 836 mCacheDirty = true; 837 } 838 839 } 840 841 public boolean canReuseBitmap(int width, int height) { 842 if (width == mCachedBitmap.getWidth() 843 && height == mCachedBitmap.getHeight()) { 844 return true; 845 } 846 return false; 847 } 848 849 public boolean canReuseCache() { 850 if (!mCacheDirty 851 && mCachedThemeAttrs == mThemeAttrs 852 && mCachedTint == mTint 853 && mCachedTintMode == mTintMode 854 && mCachedAutoMirrored == mAutoMirrored 855 && mCachedRootAlpha == mVPathRenderer.getRootAlpha()) { 856 return true; 857 } 858 return false; 859 } 860 861 public void updateCacheStates() { 862 // Use shallow copy here and shallow comparison in canReuseCache(), 863 // likely hit cache miss more, but practically not much difference. 864 mCachedThemeAttrs = mThemeAttrs; 865 mCachedTint = mTint; 866 mCachedTintMode = mTintMode; 867 mCachedRootAlpha = mVPathRenderer.getRootAlpha(); 868 mCachedAutoMirrored = mAutoMirrored; 869 mCacheDirty = false; 870 } 871 872 @Override 873 public boolean canApplyTheme() { 874 return mThemeAttrs != null 875 || (mVPathRenderer != null && mVPathRenderer.canApplyTheme()) 876 || (mTint != null && mTint.canApplyTheme()) 877 || super.canApplyTheme(); 878 } 879 880 public VectorDrawableState() { 881 mVPathRenderer = new VPathRenderer(); 882 } 883 884 @Override 885 public Drawable newDrawable() { 886 return new VectorDrawable(this, null); 887 } 888 889 @Override 890 public Drawable newDrawable(Resources res) { 891 return new VectorDrawable(this, res); 892 } 893 894 @Override 895 public int getChangingConfigurations() { 896 return mChangingConfigurations 897 | (mTint != null ? mTint.getChangingConfigurations() : 0); 898 } 899 } 900 901 private static class VPathRenderer { 902 /* Right now the internal data structure is organized as a tree. 903 * Each node can be a group node, or a path. 904 * A group node can have groups or paths as children, but a path node has 905 * no children. 906 * One example can be: 907 * Root Group 908 * / | \ 909 * Group Path Group 910 * / \ | 911 * Path Path Path 912 * 913 */ 914 // Variables that only used temporarily inside the draw() call, so there 915 // is no need for deep copying. 916 private final Path mPath; 917 private final Path mRenderPath; 918 private final Matrix mFinalPathMatrix = new Matrix(); 919 920 private Paint mStrokePaint; 921 private Paint mFillPaint; 922 private PathMeasure mPathMeasure; 923 924 ///////////////////////////////////////////////////// 925 // Variables below need to be copied (deep copy if applicable) for mutation. 926 private int mChangingConfigurations; 927 private final VGroup mRootGroup; 928 float mBaseWidth = 0; 929 float mBaseHeight = 0; 930 float mViewportWidth = 0; 931 float mViewportHeight = 0; 932 Insets mOpticalInsets = Insets.NONE; 933 int mRootAlpha = 0xFF; 934 String mRootName = null; 935 936 int mTargetDensity = DisplayMetrics.DENSITY_DEFAULT; 937 938 final ArrayMap<String, Object> mVGTargetsMap = new ArrayMap<String, Object>(); 939 940 public VPathRenderer() { 941 mRootGroup = new VGroup(); 942 mPath = new Path(); 943 mRenderPath = new Path(); 944 } 945 946 public void setRootAlpha(int alpha) { 947 mRootAlpha = alpha; 948 } 949 950 public int getRootAlpha() { 951 return mRootAlpha; 952 } 953 954 // setAlpha() and getAlpha() are used mostly for animation purpose, since 955 // Animator like to use alpha from 0 to 1. 956 public void setAlpha(float alpha) { 957 setRootAlpha((int) (alpha * 255)); 958 } 959 960 @SuppressWarnings("unused") 961 public float getAlpha() { 962 return getRootAlpha() / 255.0f; 963 } 964 965 public VPathRenderer(VPathRenderer copy) { 966 mRootGroup = new VGroup(copy.mRootGroup, mVGTargetsMap); 967 mPath = new Path(copy.mPath); 968 mRenderPath = new Path(copy.mRenderPath); 969 mBaseWidth = copy.mBaseWidth; 970 mBaseHeight = copy.mBaseHeight; 971 mViewportWidth = copy.mViewportWidth; 972 mViewportHeight = copy.mViewportHeight; 973 mOpticalInsets = copy.mOpticalInsets; 974 mChangingConfigurations = copy.mChangingConfigurations; 975 mRootAlpha = copy.mRootAlpha; 976 mRootName = copy.mRootName; 977 mTargetDensity = copy.mTargetDensity; 978 if (copy.mRootName != null) { 979 mVGTargetsMap.put(copy.mRootName, this); 980 } 981 } 982 983 public boolean canApplyTheme() { 984 // If one of the paths can apply theme, then return true; 985 return recursiveCanApplyTheme(mRootGroup); 986 } 987 988 private boolean recursiveCanApplyTheme(VGroup currentGroup) { 989 // We can do a tree traverse here, if there is one path return true, 990 // then we return true for the whole tree. 991 final ArrayList<Object> children = currentGroup.mChildren; 992 993 for (int i = 0; i < children.size(); i++) { 994 Object child = children.get(i); 995 if (child instanceof VGroup) { 996 VGroup childGroup = (VGroup) child; 997 if (childGroup.canApplyTheme() 998 || recursiveCanApplyTheme(childGroup)) { 999 return true; 1000 } 1001 } else if (child instanceof VPath) { 1002 VPath childPath = (VPath) child; 1003 if (childPath.canApplyTheme()) { 1004 return true; 1005 } 1006 } 1007 } 1008 return false; 1009 } 1010 1011 public void applyTheme(Theme t) { 1012 // Apply theme to every path of the tree. 1013 recursiveApplyTheme(mRootGroup, t); 1014 } 1015 1016 private void recursiveApplyTheme(VGroup currentGroup, Theme t) { 1017 // We can do a tree traverse here, apply theme to all paths which 1018 // can apply theme. 1019 final ArrayList<Object> children = currentGroup.mChildren; 1020 for (int i = 0; i < children.size(); i++) { 1021 Object child = children.get(i); 1022 if (child instanceof VGroup) { 1023 VGroup childGroup = (VGroup) child; 1024 if (childGroup.canApplyTheme()) { 1025 childGroup.applyTheme(t); 1026 } 1027 recursiveApplyTheme(childGroup, t); 1028 } else if (child instanceof VPath) { 1029 VPath childPath = (VPath) child; 1030 if (childPath.canApplyTheme()) { 1031 childPath.applyTheme(t); 1032 } 1033 } 1034 } 1035 } 1036 1037 private void drawGroupTree(VGroup currentGroup, Matrix currentMatrix, 1038 Canvas canvas, int w, int h, ColorFilter filter) { 1039 // Calculate current group's matrix by preConcat the parent's and 1040 // and the current one on the top of the stack. 1041 // Basically the Mfinal = Mviewport * M0 * M1 * M2; 1042 // Mi the local matrix at level i of the group tree. 1043 currentGroup.mStackedMatrix.set(currentMatrix); 1044 currentGroup.mStackedMatrix.preConcat(currentGroup.mLocalMatrix); 1045 1046 // Save the current clip information, which is local to this group. 1047 canvas.save(); 1048 // Draw the group tree in the same order as the XML file. 1049 for (int i = 0; i < currentGroup.mChildren.size(); i++) { 1050 Object child = currentGroup.mChildren.get(i); 1051 if (child instanceof VGroup) { 1052 VGroup childGroup = (VGroup) child; 1053 drawGroupTree(childGroup, currentGroup.mStackedMatrix, 1054 canvas, w, h, filter); 1055 } else if (child instanceof VPath) { 1056 VPath childPath = (VPath) child; 1057 drawPath(currentGroup, childPath, canvas, w, h, filter); 1058 } 1059 } 1060 canvas.restore(); 1061 } 1062 1063 public void draw(Canvas canvas, int w, int h, ColorFilter filter) { 1064 // Travese the tree in pre-order to draw. 1065 drawGroupTree(mRootGroup, Matrix.IDENTITY_MATRIX, canvas, w, h, filter); 1066 } 1067 1068 private void drawPath(VGroup vGroup, VPath vPath, Canvas canvas, int w, int h, 1069 ColorFilter filter) { 1070 final float scaleX = w / mViewportWidth; 1071 final float scaleY = h / mViewportHeight; 1072 final float minScale = Math.min(scaleX, scaleY); 1073 final Matrix groupStackedMatrix = vGroup.mStackedMatrix; 1074 1075 mFinalPathMatrix.set(groupStackedMatrix); 1076 mFinalPathMatrix.postScale(scaleX, scaleY); 1077 1078 final float matrixScale = getMatrixScale(groupStackedMatrix); 1079 if (matrixScale == 0) { 1080 // When either x or y is scaled to 0, we don't need to draw anything. 1081 return; 1082 } 1083 vPath.toPath(mPath); 1084 final Path path = mPath; 1085 1086 mRenderPath.reset(); 1087 1088 if (vPath.isClipPath()) { 1089 mRenderPath.addPath(path, mFinalPathMatrix); 1090 canvas.clipPath(mRenderPath); 1091 } else { 1092 VFullPath fullPath = (VFullPath) vPath; 1093 if (fullPath.mTrimPathStart != 0.0f || fullPath.mTrimPathEnd != 1.0f) { 1094 float start = (fullPath.mTrimPathStart + fullPath.mTrimPathOffset) % 1.0f; 1095 float end = (fullPath.mTrimPathEnd + fullPath.mTrimPathOffset) % 1.0f; 1096 1097 if (mPathMeasure == null) { 1098 mPathMeasure = new PathMeasure(); 1099 } 1100 mPathMeasure.setPath(mPath, false); 1101 1102 float len = mPathMeasure.getLength(); 1103 start = start * len; 1104 end = end * len; 1105 path.reset(); 1106 if (start > end) { 1107 mPathMeasure.getSegment(start, len, path, true); 1108 mPathMeasure.getSegment(0f, end, path, true); 1109 } else { 1110 mPathMeasure.getSegment(start, end, path, true); 1111 } 1112 path.rLineTo(0, 0); // fix bug in measure 1113 } 1114 mRenderPath.addPath(path, mFinalPathMatrix); 1115 1116 if (fullPath.mFillColor != Color.TRANSPARENT) { 1117 if (mFillPaint == null) { 1118 mFillPaint = new Paint(); 1119 mFillPaint.setStyle(Paint.Style.FILL); 1120 mFillPaint.setAntiAlias(true); 1121 } 1122 1123 final Paint fillPaint = mFillPaint; 1124 fillPaint.setColor(applyAlpha(fullPath.mFillColor, fullPath.mFillAlpha)); 1125 fillPaint.setColorFilter(filter); 1126 canvas.drawPath(mRenderPath, fillPaint); 1127 } 1128 1129 if (fullPath.mStrokeColor != Color.TRANSPARENT) { 1130 if (mStrokePaint == null) { 1131 mStrokePaint = new Paint(); 1132 mStrokePaint.setStyle(Paint.Style.STROKE); 1133 mStrokePaint.setAntiAlias(true); 1134 } 1135 1136 final Paint strokePaint = mStrokePaint; 1137 if (fullPath.mStrokeLineJoin != null) { 1138 strokePaint.setStrokeJoin(fullPath.mStrokeLineJoin); 1139 } 1140 1141 if (fullPath.mStrokeLineCap != null) { 1142 strokePaint.setStrokeCap(fullPath.mStrokeLineCap); 1143 } 1144 1145 strokePaint.setStrokeMiter(fullPath.mStrokeMiterlimit); 1146 strokePaint.setColor(applyAlpha(fullPath.mStrokeColor, fullPath.mStrokeAlpha)); 1147 strokePaint.setColorFilter(filter); 1148 final float finalStrokeScale = minScale * matrixScale; 1149 strokePaint.setStrokeWidth(fullPath.mStrokeWidth * finalStrokeScale); 1150 canvas.drawPath(mRenderPath, strokePaint); 1151 } 1152 } 1153 } 1154 1155 private float getMatrixScale(Matrix groupStackedMatrix) { 1156 // Given unit vectors A = (0, 1) and B = (1, 0). 1157 // After matrix mapping, we got A' and B'. Let theta = the angel b/t A' and B'. 1158 // Therefore, the final scale we want is min(|A'| * sin(theta), |B'| * sin(theta)), 1159 // which is (|A'| * |B'| * sin(theta)) / max (|A'|, |B'|); 1160 // If max (|A'|, |B'|) = 0, that means either x or y has a scale of 0. 1161 // 1162 // For non-skew case, which is most of the cases, matrix scale is computing exactly the 1163 // scale on x and y axis, and take the minimal of these two. 1164 // For skew case, an unit square will mapped to a parallelogram. And this function will 1165 // return the minimal height of the 2 bases. 1166 float[] unitVectors = new float[] {0, 1, 1, 0}; 1167 groupStackedMatrix.mapVectors(unitVectors); 1168 float scaleX = MathUtils.mag(unitVectors[0], unitVectors[1]); 1169 float scaleY = MathUtils.mag(unitVectors[2], unitVectors[3]); 1170 float crossProduct = MathUtils.cross(unitVectors[0], unitVectors[1], 1171 unitVectors[2], unitVectors[3]); 1172 float maxScale = MathUtils.max(scaleX, scaleY); 1173 1174 float matrixScale = 0; 1175 if (maxScale > 0) { 1176 matrixScale = MathUtils.abs(crossProduct) / maxScale; 1177 } 1178 if (DBG_VECTOR_DRAWABLE) { 1179 Log.d(LOGTAG, "Scale x " + scaleX + " y " + scaleY + " final " + matrixScale); 1180 } 1181 return matrixScale; 1182 } 1183 } 1184 1185 private static class VGroup { 1186 // mStackedMatrix is only used temporarily when drawing, it combines all 1187 // the parents' local matrices with the current one. 1188 private final Matrix mStackedMatrix = new Matrix(); 1189 1190 ///////////////////////////////////////////////////// 1191 // Variables below need to be copied (deep copy if applicable) for mutation. 1192 final ArrayList<Object> mChildren = new ArrayList<Object>(); 1193 1194 private float mRotate = 0; 1195 private float mPivotX = 0; 1196 private float mPivotY = 0; 1197 private float mScaleX = 1; 1198 private float mScaleY = 1; 1199 private float mTranslateX = 0; 1200 private float mTranslateY = 0; 1201 1202 // mLocalMatrix is updated based on the update of transformation information, 1203 // either parsed from the XML or by animation. 1204 private final Matrix mLocalMatrix = new Matrix(); 1205 private int mChangingConfigurations; 1206 private int[] mThemeAttrs; 1207 private String mGroupName = null; 1208 1209 public VGroup(VGroup copy, ArrayMap<String, Object> targetsMap) { 1210 mRotate = copy.mRotate; 1211 mPivotX = copy.mPivotX; 1212 mPivotY = copy.mPivotY; 1213 mScaleX = copy.mScaleX; 1214 mScaleY = copy.mScaleY; 1215 mTranslateX = copy.mTranslateX; 1216 mTranslateY = copy.mTranslateY; 1217 mThemeAttrs = copy.mThemeAttrs; 1218 mGroupName = copy.mGroupName; 1219 mChangingConfigurations = copy.mChangingConfigurations; 1220 if (mGroupName != null) { 1221 targetsMap.put(mGroupName, this); 1222 } 1223 1224 mLocalMatrix.set(copy.mLocalMatrix); 1225 1226 final ArrayList<Object> children = copy.mChildren; 1227 for (int i = 0; i < children.size(); i++) { 1228 Object copyChild = children.get(i); 1229 if (copyChild instanceof VGroup) { 1230 VGroup copyGroup = (VGroup) copyChild; 1231 mChildren.add(new VGroup(copyGroup, targetsMap)); 1232 } else { 1233 VPath newPath = null; 1234 if (copyChild instanceof VFullPath) { 1235 newPath = new VFullPath((VFullPath) copyChild); 1236 } else if (copyChild instanceof VClipPath) { 1237 newPath = new VClipPath((VClipPath) copyChild); 1238 } else { 1239 throw new IllegalStateException("Unknown object in the tree!"); 1240 } 1241 mChildren.add(newPath); 1242 if (newPath.mPathName != null) { 1243 targetsMap.put(newPath.mPathName, newPath); 1244 } 1245 } 1246 } 1247 } 1248 1249 public VGroup() { 1250 } 1251 1252 public String getGroupName() { 1253 return mGroupName; 1254 } 1255 1256 public Matrix getLocalMatrix() { 1257 return mLocalMatrix; 1258 } 1259 1260 public void inflate(Resources res, AttributeSet attrs, Theme theme) { 1261 final TypedArray a = obtainAttributes(res, theme, attrs, 1262 R.styleable.VectorDrawableGroup); 1263 updateStateFromTypedArray(a); 1264 a.recycle(); 1265 } 1266 1267 private void updateStateFromTypedArray(TypedArray a) { 1268 // Account for any configuration changes. 1269 mChangingConfigurations |= a.getChangingConfigurations(); 1270 1271 // Extract the theme attributes, if any. 1272 mThemeAttrs = a.extractThemeAttrs(); 1273 1274 mRotate = a.getFloat(R.styleable.VectorDrawableGroup_rotation, mRotate); 1275 mPivotX = a.getFloat(R.styleable.VectorDrawableGroup_pivotX, mPivotX); 1276 mPivotY = a.getFloat(R.styleable.VectorDrawableGroup_pivotY, mPivotY); 1277 mScaleX = a.getFloat(R.styleable.VectorDrawableGroup_scaleX, mScaleX); 1278 mScaleY = a.getFloat(R.styleable.VectorDrawableGroup_scaleY, mScaleY); 1279 mTranslateX = a.getFloat(R.styleable.VectorDrawableGroup_translateX, mTranslateX); 1280 mTranslateY = a.getFloat(R.styleable.VectorDrawableGroup_translateY, mTranslateY); 1281 1282 final String groupName = a.getString(R.styleable.VectorDrawableGroup_name); 1283 if (groupName != null) { 1284 mGroupName = groupName; 1285 } 1286 1287 updateLocalMatrix(); 1288 } 1289 1290 public boolean canApplyTheme() { 1291 return mThemeAttrs != null; 1292 } 1293 1294 public void applyTheme(Theme t) { 1295 if (mThemeAttrs == null) { 1296 return; 1297 } 1298 1299 final TypedArray a = t.resolveAttributes(mThemeAttrs, R.styleable.VectorDrawableGroup); 1300 updateStateFromTypedArray(a); 1301 a.recycle(); 1302 } 1303 1304 private void updateLocalMatrix() { 1305 // The order we apply is the same as the 1306 // RenderNode.cpp::applyViewPropertyTransforms(). 1307 mLocalMatrix.reset(); 1308 mLocalMatrix.postTranslate(-mPivotX, -mPivotY); 1309 mLocalMatrix.postScale(mScaleX, mScaleY); 1310 mLocalMatrix.postRotate(mRotate, 0, 0); 1311 mLocalMatrix.postTranslate(mTranslateX + mPivotX, mTranslateY + mPivotY); 1312 } 1313 1314 /* Setters and Getters, used by animator from AnimatedVectorDrawable. */ 1315 @SuppressWarnings("unused") 1316 public float getRotation() { 1317 return mRotate; 1318 } 1319 1320 @SuppressWarnings("unused") 1321 public void setRotation(float rotation) { 1322 if (rotation != mRotate) { 1323 mRotate = rotation; 1324 updateLocalMatrix(); 1325 } 1326 } 1327 1328 @SuppressWarnings("unused") 1329 public float getPivotX() { 1330 return mPivotX; 1331 } 1332 1333 @SuppressWarnings("unused") 1334 public void setPivotX(float pivotX) { 1335 if (pivotX != mPivotX) { 1336 mPivotX = pivotX; 1337 updateLocalMatrix(); 1338 } 1339 } 1340 1341 @SuppressWarnings("unused") 1342 public float getPivotY() { 1343 return mPivotY; 1344 } 1345 1346 @SuppressWarnings("unused") 1347 public void setPivotY(float pivotY) { 1348 if (pivotY != mPivotY) { 1349 mPivotY = pivotY; 1350 updateLocalMatrix(); 1351 } 1352 } 1353 1354 @SuppressWarnings("unused") 1355 public float getScaleX() { 1356 return mScaleX; 1357 } 1358 1359 @SuppressWarnings("unused") 1360 public void setScaleX(float scaleX) { 1361 if (scaleX != mScaleX) { 1362 mScaleX = scaleX; 1363 updateLocalMatrix(); 1364 } 1365 } 1366 1367 @SuppressWarnings("unused") 1368 public float getScaleY() { 1369 return mScaleY; 1370 } 1371 1372 @SuppressWarnings("unused") 1373 public void setScaleY(float scaleY) { 1374 if (scaleY != mScaleY) { 1375 mScaleY = scaleY; 1376 updateLocalMatrix(); 1377 } 1378 } 1379 1380 @SuppressWarnings("unused") 1381 public float getTranslateX() { 1382 return mTranslateX; 1383 } 1384 1385 @SuppressWarnings("unused") 1386 public void setTranslateX(float translateX) { 1387 if (translateX != mTranslateX) { 1388 mTranslateX = translateX; 1389 updateLocalMatrix(); 1390 } 1391 } 1392 1393 @SuppressWarnings("unused") 1394 public float getTranslateY() { 1395 return mTranslateY; 1396 } 1397 1398 @SuppressWarnings("unused") 1399 public void setTranslateY(float translateY) { 1400 if (translateY != mTranslateY) { 1401 mTranslateY = translateY; 1402 updateLocalMatrix(); 1403 } 1404 } 1405 } 1406 1407 /** 1408 * Common Path information for clip path and normal path. 1409 */ 1410 private static class VPath { 1411 protected PathParser.PathDataNode[] mNodes = null; 1412 String mPathName; 1413 int mChangingConfigurations; 1414 1415 public VPath() { 1416 // Empty constructor. 1417 } 1418 1419 public VPath(VPath copy) { 1420 mPathName = copy.mPathName; 1421 mChangingConfigurations = copy.mChangingConfigurations; 1422 mNodes = PathParser.deepCopyNodes(copy.mNodes); 1423 } 1424 1425 public void toPath(Path path) { 1426 path.reset(); 1427 if (mNodes != null) { 1428 PathParser.PathDataNode.nodesToPath(mNodes, path); 1429 } 1430 } 1431 1432 public String getPathName() { 1433 return mPathName; 1434 } 1435 1436 public boolean canApplyTheme() { 1437 return false; 1438 } 1439 1440 public void applyTheme(Theme t) { 1441 } 1442 1443 public boolean isClipPath() { 1444 return false; 1445 } 1446 1447 /* Setters and Getters, used by animator from AnimatedVectorDrawable. */ 1448 @SuppressWarnings("unused") 1449 public PathParser.PathDataNode[] getPathData() { 1450 return mNodes; 1451 } 1452 1453 @SuppressWarnings("unused") 1454 public void setPathData(PathParser.PathDataNode[] nodes) { 1455 if (!PathParser.canMorph(mNodes, nodes)) { 1456 // This should not happen in the middle of animation. 1457 mNodes = PathParser.deepCopyNodes(nodes); 1458 } else { 1459 PathParser.updateNodes(mNodes, nodes); 1460 } 1461 } 1462 } 1463 1464 /** 1465 * Clip path, which only has name and pathData. 1466 */ 1467 private static class VClipPath extends VPath { 1468 public VClipPath() { 1469 // Empty constructor. 1470 } 1471 1472 public VClipPath(VClipPath copy) { 1473 super(copy); 1474 } 1475 1476 public void inflate(Resources r, AttributeSet attrs, Theme theme) { 1477 final TypedArray a = obtainAttributes(r, theme, attrs, 1478 R.styleable.VectorDrawableClipPath); 1479 updateStateFromTypedArray(a); 1480 a.recycle(); 1481 } 1482 1483 private void updateStateFromTypedArray(TypedArray a) { 1484 // Account for any configuration changes. 1485 mChangingConfigurations |= a.getChangingConfigurations(); 1486 1487 final String pathName = a.getString(R.styleable.VectorDrawableClipPath_name); 1488 if (pathName != null) { 1489 mPathName = pathName; 1490 } 1491 1492 final String pathData = a.getString(R.styleable.VectorDrawableClipPath_pathData); 1493 if (pathData != null) { 1494 mNodes = PathParser.createNodesFromPathData(pathData); 1495 } 1496 } 1497 1498 @Override 1499 public boolean isClipPath() { 1500 return true; 1501 } 1502 } 1503 1504 /** 1505 * Normal path, which contains all the fill / paint information. 1506 */ 1507 private static class VFullPath extends VPath { 1508 ///////////////////////////////////////////////////// 1509 // Variables below need to be copied (deep copy if applicable) for mutation. 1510 private int[] mThemeAttrs; 1511 1512 int mStrokeColor = Color.TRANSPARENT; 1513 float mStrokeWidth = 0; 1514 1515 int mFillColor = Color.TRANSPARENT; 1516 float mStrokeAlpha = 1.0f; 1517 int mFillRule; 1518 float mFillAlpha = 1.0f; 1519 float mTrimPathStart = 0; 1520 float mTrimPathEnd = 1; 1521 float mTrimPathOffset = 0; 1522 1523 Paint.Cap mStrokeLineCap = Paint.Cap.BUTT; 1524 Paint.Join mStrokeLineJoin = Paint.Join.MITER; 1525 float mStrokeMiterlimit = 4; 1526 1527 public VFullPath() { 1528 // Empty constructor. 1529 } 1530 1531 public VFullPath(VFullPath copy) { 1532 super(copy); 1533 mThemeAttrs = copy.mThemeAttrs; 1534 1535 mStrokeColor = copy.mStrokeColor; 1536 mStrokeWidth = copy.mStrokeWidth; 1537 mStrokeAlpha = copy.mStrokeAlpha; 1538 mFillColor = copy.mFillColor; 1539 mFillRule = copy.mFillRule; 1540 mFillAlpha = copy.mFillAlpha; 1541 mTrimPathStart = copy.mTrimPathStart; 1542 mTrimPathEnd = copy.mTrimPathEnd; 1543 mTrimPathOffset = copy.mTrimPathOffset; 1544 1545 mStrokeLineCap = copy.mStrokeLineCap; 1546 mStrokeLineJoin = copy.mStrokeLineJoin; 1547 mStrokeMiterlimit = copy.mStrokeMiterlimit; 1548 } 1549 1550 private Paint.Cap getStrokeLineCap(int id, Paint.Cap defValue) { 1551 switch (id) { 1552 case LINECAP_BUTT: 1553 return Paint.Cap.BUTT; 1554 case LINECAP_ROUND: 1555 return Paint.Cap.ROUND; 1556 case LINECAP_SQUARE: 1557 return Paint.Cap.SQUARE; 1558 default: 1559 return defValue; 1560 } 1561 } 1562 1563 private Paint.Join getStrokeLineJoin(int id, Paint.Join defValue) { 1564 switch (id) { 1565 case LINEJOIN_MITER: 1566 return Paint.Join.MITER; 1567 case LINEJOIN_ROUND: 1568 return Paint.Join.ROUND; 1569 case LINEJOIN_BEVEL: 1570 return Paint.Join.BEVEL; 1571 default: 1572 return defValue; 1573 } 1574 } 1575 1576 @Override 1577 public boolean canApplyTheme() { 1578 return mThemeAttrs != null; 1579 } 1580 1581 public void inflate(Resources r, AttributeSet attrs, Theme theme) { 1582 final TypedArray a = obtainAttributes(r, theme, attrs, 1583 R.styleable.VectorDrawablePath); 1584 updateStateFromTypedArray(a); 1585 a.recycle(); 1586 } 1587 1588 private void updateStateFromTypedArray(TypedArray a) { 1589 // Account for any configuration changes. 1590 mChangingConfigurations |= a.getChangingConfigurations(); 1591 1592 // Extract the theme attributes, if any. 1593 mThemeAttrs = a.extractThemeAttrs(); 1594 1595 final String pathName = a.getString(R.styleable.VectorDrawablePath_name); 1596 if (pathName != null) { 1597 mPathName = pathName; 1598 } 1599 1600 final String pathData = a.getString(R.styleable.VectorDrawablePath_pathData); 1601 if (pathData != null) { 1602 mNodes = PathParser.createNodesFromPathData(pathData); 1603 } 1604 1605 mFillColor = a.getColor(R.styleable.VectorDrawablePath_fillColor, 1606 mFillColor); 1607 mFillAlpha = a.getFloat(R.styleable.VectorDrawablePath_fillAlpha, 1608 mFillAlpha); 1609 mStrokeLineCap = getStrokeLineCap(a.getInt( 1610 R.styleable.VectorDrawablePath_strokeLineCap, -1), mStrokeLineCap); 1611 mStrokeLineJoin = getStrokeLineJoin(a.getInt( 1612 R.styleable.VectorDrawablePath_strokeLineJoin, -1), mStrokeLineJoin); 1613 mStrokeMiterlimit = a.getFloat( 1614 R.styleable.VectorDrawablePath_strokeMiterLimit, mStrokeMiterlimit); 1615 mStrokeColor = a.getColor(R.styleable.VectorDrawablePath_strokeColor, 1616 mStrokeColor); 1617 mStrokeAlpha = a.getFloat(R.styleable.VectorDrawablePath_strokeAlpha, 1618 mStrokeAlpha); 1619 mStrokeWidth = a.getFloat(R.styleable.VectorDrawablePath_strokeWidth, 1620 mStrokeWidth); 1621 mTrimPathEnd = a.getFloat(R.styleable.VectorDrawablePath_trimPathEnd, 1622 mTrimPathEnd); 1623 mTrimPathOffset = a.getFloat( 1624 R.styleable.VectorDrawablePath_trimPathOffset, mTrimPathOffset); 1625 mTrimPathStart = a.getFloat( 1626 R.styleable.VectorDrawablePath_trimPathStart, mTrimPathStart); 1627 } 1628 1629 @Override 1630 public void applyTheme(Theme t) { 1631 if (mThemeAttrs == null) { 1632 return; 1633 } 1634 1635 final TypedArray a = t.resolveAttributes(mThemeAttrs, R.styleable.VectorDrawablePath); 1636 updateStateFromTypedArray(a); 1637 a.recycle(); 1638 } 1639 1640 /* Setters and Getters, used by animator from AnimatedVectorDrawable. */ 1641 @SuppressWarnings("unused") 1642 int getStrokeColor() { 1643 return mStrokeColor; 1644 } 1645 1646 @SuppressWarnings("unused") 1647 void setStrokeColor(int strokeColor) { 1648 mStrokeColor = strokeColor; 1649 } 1650 1651 @SuppressWarnings("unused") 1652 float getStrokeWidth() { 1653 return mStrokeWidth; 1654 } 1655 1656 @SuppressWarnings("unused") 1657 void setStrokeWidth(float strokeWidth) { 1658 mStrokeWidth = strokeWidth; 1659 } 1660 1661 @SuppressWarnings("unused") 1662 float getStrokeAlpha() { 1663 return mStrokeAlpha; 1664 } 1665 1666 @SuppressWarnings("unused") 1667 void setStrokeAlpha(float strokeAlpha) { 1668 mStrokeAlpha = strokeAlpha; 1669 } 1670 1671 @SuppressWarnings("unused") 1672 int getFillColor() { 1673 return mFillColor; 1674 } 1675 1676 @SuppressWarnings("unused") 1677 void setFillColor(int fillColor) { 1678 mFillColor = fillColor; 1679 } 1680 1681 @SuppressWarnings("unused") 1682 float getFillAlpha() { 1683 return mFillAlpha; 1684 } 1685 1686 @SuppressWarnings("unused") 1687 void setFillAlpha(float fillAlpha) { 1688 mFillAlpha = fillAlpha; 1689 } 1690 1691 @SuppressWarnings("unused") 1692 float getTrimPathStart() { 1693 return mTrimPathStart; 1694 } 1695 1696 @SuppressWarnings("unused") 1697 void setTrimPathStart(float trimPathStart) { 1698 mTrimPathStart = trimPathStart; 1699 } 1700 1701 @SuppressWarnings("unused") 1702 float getTrimPathEnd() { 1703 return mTrimPathEnd; 1704 } 1705 1706 @SuppressWarnings("unused") 1707 void setTrimPathEnd(float trimPathEnd) { 1708 mTrimPathEnd = trimPathEnd; 1709 } 1710 1711 @SuppressWarnings("unused") 1712 float getTrimPathOffset() { 1713 return mTrimPathOffset; 1714 } 1715 1716 @SuppressWarnings("unused") 1717 void setTrimPathOffset(float trimPathOffset) { 1718 mTrimPathOffset = trimPathOffset; 1719 } 1720 } 1721} 1722