The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 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 | |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 19 | import android.annotation.NonNull; |
| 20 | import android.annotation.Nullable; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 21 | import android.os.Parcel; |
| 22 | import android.os.Parcelable; |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 23 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 24 | import com.android.internal.util.FastMath; |
| 25 | |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 26 | import java.io.PrintWriter; |
| 27 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | /** |
| 29 | * RectF holds four float coordinates for a rectangle. The rectangle is |
| 30 | * represented by the coordinates of its 4 edges (left, top, right bottom). |
| 31 | * These fields can be accessed directly. Use width() and height() to retrieve |
| 32 | * the rectangle's width and height. Note: most methods do not check to see that |
| 33 | * the coordinates are sorted correctly (i.e. left <= right and top <= bottom). |
| 34 | */ |
| 35 | public class RectF implements Parcelable { |
| 36 | public float left; |
| 37 | public float top; |
| 38 | public float right; |
| 39 | public float bottom; |
| 40 | |
| 41 | /** |
| 42 | * Create a new empty RectF. All coordinates are initialized to 0. |
| 43 | */ |
| 44 | public RectF() {} |
| 45 | |
| 46 | /** |
| 47 | * Create a new rectangle with the specified coordinates. Note: no range |
| 48 | * checking is performed, so the caller must ensure that left <= right and |
| 49 | * top <= bottom. |
| 50 | * |
Pin Ting | 852be16 | 2012-05-11 18:09:58 +0800 | [diff] [blame] | 51 | * @param left The X coordinate of the left side of the rectangle |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 52 | * @param top The Y coordinate of the top of the rectangle |
Pin Ting | 852be16 | 2012-05-11 18:09:58 +0800 | [diff] [blame] | 53 | * @param right The X coordinate of the right side of the rectangle |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 54 | * @param bottom The Y coordinate of the bottom of the rectangle |
| 55 | */ |
| 56 | public RectF(float left, float top, float right, float bottom) { |
| 57 | this.left = left; |
| 58 | this.top = top; |
| 59 | this.right = right; |
| 60 | this.bottom = bottom; |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Create a new rectangle, initialized with the values in the specified |
| 65 | * rectangle (which is left unmodified). |
| 66 | * |
| 67 | * @param r The rectangle whose coordinates are copied into the new |
| 68 | * rectangle. |
| 69 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 70 | public RectF(@Nullable RectF r) { |
Romain Guy | dd4b1fe | 2012-09-12 17:28:02 -0700 | [diff] [blame] | 71 | if (r == null) { |
| 72 | left = top = right = bottom = 0.0f; |
| 73 | } else { |
| 74 | left = r.left; |
| 75 | top = r.top; |
| 76 | right = r.right; |
| 77 | bottom = r.bottom; |
| 78 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 79 | } |
| 80 | |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 81 | public RectF(@Nullable Rect r) { |
Romain Guy | dd4b1fe | 2012-09-12 17:28:02 -0700 | [diff] [blame] | 82 | if (r == null) { |
| 83 | left = top = right = bottom = 0.0f; |
| 84 | } else { |
| 85 | left = r.left; |
| 86 | top = r.top; |
| 87 | right = r.right; |
| 88 | bottom = r.bottom; |
| 89 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 90 | } |
| 91 | |
Romain Guy | 74d7ca1 | 2012-01-31 10:50:38 -0800 | [diff] [blame] | 92 | @Override |
| 93 | public boolean equals(Object o) { |
| 94 | if (this == o) return true; |
| 95 | if (o == null || getClass() != o.getClass()) return false; |
| 96 | |
Amith Yamasani | 3b577dd | 2012-03-09 11:53:31 -0800 | [diff] [blame] | 97 | RectF r = (RectF) o; |
Romain Guy | 74d7ca1 | 2012-01-31 10:50:38 -0800 | [diff] [blame] | 98 | return left == r.left && top == r.top && right == r.right && bottom == r.bottom; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public int hashCode() { |
| 103 | int result = (left != +0.0f ? Float.floatToIntBits(left) : 0); |
| 104 | result = 31 * result + (top != +0.0f ? Float.floatToIntBits(top) : 0); |
| 105 | result = 31 * result + (right != +0.0f ? Float.floatToIntBits(right) : 0); |
| 106 | result = 31 * result + (bottom != +0.0f ? Float.floatToIntBits(bottom) : 0); |
| 107 | return result; |
| 108 | } |
| 109 | |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 110 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 111 | public String toString() { |
| 112 | return "RectF(" + left + ", " + top + ", " |
| 113 | + right + ", " + bottom + ")"; |
| 114 | } |
Dianne Hackborn | d040edb | 2011-08-31 12:47:58 -0700 | [diff] [blame] | 115 | |
| 116 | /** |
| 117 | * Return a string representation of the rectangle in a compact form. |
| 118 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 119 | @NonNull |
Dianne Hackborn | d040edb | 2011-08-31 12:47:58 -0700 | [diff] [blame] | 120 | public String toShortString() { |
| 121 | return toShortString(new StringBuilder(32)); |
| 122 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 123 | |
| 124 | /** |
Dianne Hackborn | d040edb | 2011-08-31 12:47:58 -0700 | [diff] [blame] | 125 | * Return a string representation of the rectangle in a compact form. |
| 126 | * @hide |
| 127 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 128 | @NonNull |
| 129 | public String toShortString(@NonNull StringBuilder sb) { |
Dianne Hackborn | d040edb | 2011-08-31 12:47:58 -0700 | [diff] [blame] | 130 | sb.setLength(0); |
| 131 | sb.append('['); sb.append(left); sb.append(','); |
| 132 | sb.append(top); sb.append("]["); sb.append(right); |
| 133 | sb.append(','); sb.append(bottom); sb.append(']'); |
| 134 | return sb.toString(); |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Print short representation to given writer. |
| 139 | * @hide |
| 140 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 141 | public void printShortString(@NonNull PrintWriter pw) { |
Dianne Hackborn | d040edb | 2011-08-31 12:47:58 -0700 | [diff] [blame] | 142 | pw.print('['); pw.print(left); pw.print(','); |
| 143 | pw.print(top); pw.print("]["); pw.print(right); |
| 144 | pw.print(','); pw.print(bottom); pw.print(']'); |
| 145 | } |
| 146 | |
| 147 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 148 | * Returns true if the rectangle is empty (left >= right or top >= bottom) |
| 149 | */ |
| 150 | public final boolean isEmpty() { |
| 151 | return left >= right || top >= bottom; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * @return the rectangle's width. This does not check for a valid rectangle |
| 156 | * (i.e. left <= right) so the result may be negative. |
| 157 | */ |
| 158 | public final float width() { |
| 159 | return right - left; |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * @return the rectangle's height. This does not check for a valid rectangle |
| 164 | * (i.e. top <= bottom) so the result may be negative. |
| 165 | */ |
| 166 | public final float height() { |
| 167 | return bottom - top; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @return the horizontal center of the rectangle. This does not check for |
| 172 | * a valid rectangle (i.e. left <= right) |
| 173 | */ |
| 174 | public final float centerX() { |
| 175 | return (left + right) * 0.5f; |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * @return the vertical center of the rectangle. This does not check for |
| 180 | * a valid rectangle (i.e. top <= bottom) |
| 181 | */ |
| 182 | public final float centerY() { |
| 183 | return (top + bottom) * 0.5f; |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Set the rectangle to (0,0,0,0) |
| 188 | */ |
| 189 | public void setEmpty() { |
| 190 | left = right = top = bottom = 0; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Set the rectangle's coordinates to the specified values. Note: no range |
| 195 | * checking is performed, so it is up to the caller to ensure that |
| 196 | * left <= right and top <= bottom. |
| 197 | * |
Pin Ting | 852be16 | 2012-05-11 18:09:58 +0800 | [diff] [blame] | 198 | * @param left The X coordinate of the left side of the rectangle |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 199 | * @param top The Y coordinate of the top of the rectangle |
Pin Ting | 852be16 | 2012-05-11 18:09:58 +0800 | [diff] [blame] | 200 | * @param right The X coordinate of the right side of the rectangle |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 201 | * @param bottom The Y coordinate of the bottom of the rectangle |
| 202 | */ |
| 203 | public void set(float left, float top, float right, float bottom) { |
| 204 | this.left = left; |
| 205 | this.top = top; |
| 206 | this.right = right; |
| 207 | this.bottom = bottom; |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Copy the coordinates from src into this rectangle. |
| 212 | * |
| 213 | * @param src The rectangle whose coordinates are copied into this |
| 214 | * rectangle. |
| 215 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 216 | public void set(@NonNull RectF src) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 217 | this.left = src.left; |
| 218 | this.top = src.top; |
| 219 | this.right = src.right; |
| 220 | this.bottom = src.bottom; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Copy the coordinates from src into this rectangle. |
| 225 | * |
| 226 | * @param src The rectangle whose coordinates are copied into this |
| 227 | * rectangle. |
| 228 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 229 | public void set(@NonNull Rect src) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 230 | this.left = src.left; |
| 231 | this.top = src.top; |
| 232 | this.right = src.right; |
| 233 | this.bottom = src.bottom; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Offset the rectangle by adding dx to its left and right coordinates, and |
| 238 | * adding dy to its top and bottom coordinates. |
| 239 | * |
| 240 | * @param dx The amount to add to the rectangle's left and right coordinates |
| 241 | * @param dy The amount to add to the rectangle's top and bottom coordinates |
| 242 | */ |
| 243 | public void offset(float dx, float dy) { |
| 244 | left += dx; |
| 245 | top += dy; |
| 246 | right += dx; |
| 247 | bottom += dy; |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Offset the rectangle to a specific (left, top) position, |
| 252 | * keeping its width and height the same. |
| 253 | * |
| 254 | * @param newLeft The new "left" coordinate for the rectangle |
| 255 | * @param newTop The new "top" coordinate for the rectangle |
| 256 | */ |
| 257 | public void offsetTo(float newLeft, float newTop) { |
| 258 | right += newLeft - left; |
| 259 | bottom += newTop - top; |
| 260 | left = newLeft; |
| 261 | top = newTop; |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Inset the rectangle by (dx,dy). If dx is positive, then the sides are |
| 266 | * moved inwards, making the rectangle narrower. If dx is negative, then the |
| 267 | * sides are moved outwards, making the rectangle wider. The same holds true |
| 268 | * for dy and the top and bottom. |
| 269 | * |
| 270 | * @param dx The amount to add(subtract) from the rectangle's left(right) |
| 271 | * @param dy The amount to add(subtract) from the rectangle's top(bottom) |
| 272 | */ |
| 273 | public void inset(float dx, float dy) { |
| 274 | left += dx; |
| 275 | top += dy; |
| 276 | right -= dx; |
| 277 | bottom -= dy; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * Returns true if (x,y) is inside the rectangle. The left and top are |
| 282 | * considered to be inside, while the right and bottom are not. This means |
| 283 | * that for a x,y to be contained: left <= x < right and top <= y < bottom. |
| 284 | * An empty rectangle never contains any point. |
| 285 | * |
| 286 | * @param x The X coordinate of the point being tested for containment |
| 287 | * @param y The Y coordinate of the point being tested for containment |
| 288 | * @return true iff (x,y) are contained by the rectangle, where containment |
| 289 | * means left <= x < right and top <= y < bottom |
| 290 | */ |
| 291 | public boolean contains(float x, float y) { |
| 292 | return left < right && top < bottom // check for empty first |
| 293 | && x >= left && x < right && y >= top && y < bottom; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Returns true iff the 4 specified sides of a rectangle are inside or equal |
| 298 | * to this rectangle. i.e. is this rectangle a superset of the specified |
| 299 | * rectangle. An empty rectangle never contains another rectangle. |
| 300 | * |
| 301 | * @param left The left side of the rectangle being tested for containment |
| 302 | * @param top The top of the rectangle being tested for containment |
| 303 | * @param right The right side of the rectangle being tested for containment |
| 304 | * @param bottom The bottom of the rectangle being tested for containment |
| 305 | * @return true iff the the 4 specified sides of a rectangle are inside or |
| 306 | * equal to this rectangle |
| 307 | */ |
| 308 | public boolean contains(float left, float top, float right, float bottom) { |
| 309 | // check for empty first |
| 310 | return this.left < this.right && this.top < this.bottom |
| 311 | // now check for containment |
| 312 | && this.left <= left && this.top <= top |
| 313 | && this.right >= right && this.bottom >= bottom; |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * Returns true iff the specified rectangle r is inside or equal to this |
| 318 | * rectangle. An empty rectangle never contains another rectangle. |
| 319 | * |
| 320 | * @param r The rectangle being tested for containment. |
| 321 | * @return true iff the specified rectangle r is inside or equal to this |
| 322 | * rectangle |
| 323 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 324 | public boolean contains(@NonNull RectF r) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 325 | // check for empty first |
| 326 | return this.left < this.right && this.top < this.bottom |
| 327 | // now check for containment |
| 328 | && left <= r.left && top <= r.top |
| 329 | && right >= r.right && bottom >= r.bottom; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * If the rectangle specified by left,top,right,bottom intersects this |
| 334 | * rectangle, return true and set this rectangle to that intersection, |
| 335 | * otherwise return false and do not change this rectangle. No check is |
| 336 | * performed to see if either rectangle is empty. Note: To just test for |
| 337 | * intersection, use intersects() |
| 338 | * |
| 339 | * @param left The left side of the rectangle being intersected with this |
| 340 | * rectangle |
| 341 | * @param top The top of the rectangle being intersected with this rectangle |
| 342 | * @param right The right side of the rectangle being intersected with this |
| 343 | * rectangle. |
| 344 | * @param bottom The bottom of the rectangle being intersected with this |
| 345 | * rectangle. |
| 346 | * @return true if the specified rectangle and this rectangle intersect |
| 347 | * (and this rectangle is then set to that intersection) else |
| 348 | * return false and do not change this rectangle. |
| 349 | */ |
| 350 | public boolean intersect(float left, float top, float right, float bottom) { |
| 351 | if (this.left < right && left < this.right |
| 352 | && this.top < bottom && top < this.bottom) { |
| 353 | if (this.left < left) { |
| 354 | this.left = left; |
| 355 | } |
| 356 | if (this.top < top) { |
| 357 | this.top = top; |
| 358 | } |
| 359 | if (this.right > right) { |
| 360 | this.right = right; |
| 361 | } |
| 362 | if (this.bottom > bottom) { |
| 363 | this.bottom = bottom; |
| 364 | } |
| 365 | return true; |
| 366 | } |
| 367 | return false; |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * If the specified rectangle intersects this rectangle, return true and set |
| 372 | * this rectangle to that intersection, otherwise return false and do not |
| 373 | * change this rectangle. No check is performed to see if either rectangle |
| 374 | * is empty. To just test for intersection, use intersects() |
| 375 | * |
| 376 | * @param r The rectangle being intersected with this rectangle. |
| 377 | * @return true if the specified rectangle and this rectangle intersect |
| 378 | * (and this rectangle is then set to that intersection) else |
| 379 | * return false and do not change this rectangle. |
| 380 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 381 | public boolean intersect(@NonNull RectF r) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 382 | return intersect(r.left, r.top, r.right, r.bottom); |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * If rectangles a and b intersect, return true and set this rectangle to |
| 387 | * that intersection, otherwise return false and do not change this |
| 388 | * rectangle. No check is performed to see if either rectangle is empty. |
| 389 | * To just test for intersection, use intersects() |
| 390 | * |
| 391 | * @param a The first rectangle being intersected with |
| 392 | * @param b The second rectangle being intersected with |
| 393 | * @return true iff the two specified rectangles intersect. If they do, set |
| 394 | * this rectangle to that intersection. If they do not, return |
| 395 | * false and do not change this rectangle. |
| 396 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 397 | public boolean setIntersect(@NonNull RectF a, @NonNull RectF b) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 398 | if (a.left < b.right && b.left < a.right |
| 399 | && a.top < b.bottom && b.top < a.bottom) { |
| 400 | left = Math.max(a.left, b.left); |
| 401 | top = Math.max(a.top, b.top); |
| 402 | right = Math.min(a.right, b.right); |
| 403 | bottom = Math.min(a.bottom, b.bottom); |
| 404 | return true; |
| 405 | } |
| 406 | return false; |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Returns true if this rectangle intersects the specified rectangle. |
| 411 | * In no event is this rectangle modified. No check is performed to see |
| 412 | * if either rectangle is empty. To record the intersection, use intersect() |
| 413 | * or setIntersect(). |
| 414 | * |
| 415 | * @param left The left side of the rectangle being tested for intersection |
| 416 | * @param top The top of the rectangle being tested for intersection |
| 417 | * @param right The right side of the rectangle being tested for |
| 418 | * intersection |
| 419 | * @param bottom The bottom of the rectangle being tested for intersection |
| 420 | * @return true iff the specified rectangle intersects this rectangle. In |
| 421 | * no event is this rectangle modified. |
| 422 | */ |
| 423 | public boolean intersects(float left, float top, float right, |
| 424 | float bottom) { |
| 425 | return this.left < right && left < this.right |
| 426 | && this.top < bottom && top < this.bottom; |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * Returns true iff the two specified rectangles intersect. In no event are |
| 431 | * either of the rectangles modified. To record the intersection, |
| 432 | * use intersect() or setIntersect(). |
| 433 | * |
| 434 | * @param a The first rectangle being tested for intersection |
| 435 | * @param b The second rectangle being tested for intersection |
| 436 | * @return true iff the two specified rectangles intersect. In no event are |
| 437 | * either of the rectangles modified. |
| 438 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 439 | public static boolean intersects(@NonNull RectF a, @NonNull RectF b) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 440 | return a.left < b.right && b.left < a.right |
| 441 | && a.top < b.bottom && b.top < a.bottom; |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Set the dst integer Rect by rounding this rectangle's coordinates |
| 446 | * to their nearest integer values. |
| 447 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 448 | public void round(@NonNull Rect dst) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 449 | dst.set(FastMath.round(left), FastMath.round(top), |
| 450 | FastMath.round(right), FastMath.round(bottom)); |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Set the dst integer Rect by rounding "out" this rectangle, choosing the |
| 455 | * floor of top and left, and the ceiling of right and bottom. |
| 456 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 457 | public void roundOut(@NonNull Rect dst) { |
Neil Fuller | 33253a4 | 2014-10-01 11:55:10 +0100 | [diff] [blame] | 458 | dst.set((int) Math.floor(left), (int) Math.floor(top), |
| 459 | (int) Math.ceil(right), (int) Math.ceil(bottom)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | /** |
| 463 | * Update this Rect to enclose itself and the specified rectangle. If the |
| 464 | * specified rectangle is empty, nothing is done. If this rectangle is empty |
| 465 | * it is set to the specified rectangle. |
| 466 | * |
| 467 | * @param left The left edge being unioned with this rectangle |
| 468 | * @param top The top edge being unioned with this rectangle |
| 469 | * @param right The right edge being unioned with this rectangle |
| 470 | * @param bottom The bottom edge being unioned with this rectangle |
| 471 | */ |
| 472 | public void union(float left, float top, float right, float bottom) { |
| 473 | if ((left < right) && (top < bottom)) { |
| 474 | if ((this.left < this.right) && (this.top < this.bottom)) { |
| 475 | if (this.left > left) |
| 476 | this.left = left; |
| 477 | if (this.top > top) |
| 478 | this.top = top; |
| 479 | if (this.right < right) |
| 480 | this.right = right; |
| 481 | if (this.bottom < bottom) |
| 482 | this.bottom = bottom; |
| 483 | } else { |
| 484 | this.left = left; |
| 485 | this.top = top; |
| 486 | this.right = right; |
| 487 | this.bottom = bottom; |
| 488 | } |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Update this Rect to enclose itself and the specified rectangle. If the |
| 494 | * specified rectangle is empty, nothing is done. If this rectangle is empty |
| 495 | * it is set to the specified rectangle. |
| 496 | * |
| 497 | * @param r The rectangle being unioned with this rectangle |
| 498 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 499 | public void union(@NonNull RectF r) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 500 | union(r.left, r.top, r.right, r.bottom); |
| 501 | } |
| 502 | |
| 503 | /** |
| 504 | * Update this Rect to enclose itself and the [x,y] coordinate. There is no |
| 505 | * check to see that this rectangle is non-empty. |
| 506 | * |
| 507 | * @param x The x coordinate of the point to add to the rectangle |
| 508 | * @param y The y coordinate of the point to add to the rectangle |
| 509 | */ |
| 510 | public void union(float x, float y) { |
| 511 | if (x < left) { |
| 512 | left = x; |
| 513 | } else if (x > right) { |
| 514 | right = x; |
| 515 | } |
| 516 | if (y < top) { |
| 517 | top = y; |
| 518 | } else if (y > bottom) { |
| 519 | bottom = y; |
| 520 | } |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * Swap top/bottom or left/right if there are flipped (i.e. left > right |
| 525 | * and/or top > bottom). This can be called if |
| 526 | * the edges are computed separately, and may have crossed over each other. |
| 527 | * If the edges are already correct (i.e. left <= right and top <= bottom) |
| 528 | * then nothing is done. |
| 529 | */ |
| 530 | public void sort() { |
| 531 | if (left > right) { |
| 532 | float temp = left; |
| 533 | left = right; |
| 534 | right = temp; |
| 535 | } |
| 536 | if (top > bottom) { |
| 537 | float temp = top; |
| 538 | top = bottom; |
| 539 | bottom = temp; |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Parcelable interface methods |
| 545 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 546 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 547 | public int describeContents() { |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | /** |
| 552 | * Write this rectangle to the specified parcel. To restore a rectangle from |
| 553 | * a parcel, use readFromParcel() |
| 554 | * @param out The parcel to write the rectangle's coordinates into |
| 555 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 556 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 557 | public void writeToParcel(Parcel out, int flags) { |
| 558 | out.writeFloat(left); |
| 559 | out.writeFloat(top); |
| 560 | out.writeFloat(right); |
| 561 | out.writeFloat(bottom); |
| 562 | } |
| 563 | |
Jeff Sharkey | 9e8f83d | 2019-02-28 12:06:45 -0700 | [diff] [blame^] | 564 | public static final @android.annotation.NonNull Parcelable.Creator<RectF> CREATOR = new Parcelable.Creator<RectF>() { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 565 | /** |
| 566 | * Return a new rectangle from the data in the specified parcel. |
| 567 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 568 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 569 | public RectF createFromParcel(Parcel in) { |
| 570 | RectF r = new RectF(); |
| 571 | r.readFromParcel(in); |
| 572 | return r; |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * Return an array of rectangles of the specified size. |
| 577 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 578 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 579 | public RectF[] newArray(int size) { |
| 580 | return new RectF[size]; |
| 581 | } |
| 582 | }; |
| 583 | |
| 584 | /** |
| 585 | * Set the rectangle's coordinates from the data stored in the specified |
| 586 | * parcel. To write a rectangle to a parcel, call writeToParcel(). |
| 587 | * |
| 588 | * @param in The parcel to read the rectangle's coordinates from |
| 589 | */ |
Jake Wharton | dfda4ea | 2018-06-05 12:44:36 -0400 | [diff] [blame] | 590 | public void readFromParcel(@NonNull Parcel in) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 591 | left = in.readFloat(); |
| 592 | top = in.readFloat(); |
| 593 | right = in.readFloat(); |
| 594 | bottom = in.readFloat(); |
| 595 | } |
Phil Weaver | c2e2893 | 2016-12-08 12:29:25 -0800 | [diff] [blame] | 596 | |
| 597 | /** |
| 598 | * Scales up the rect by the given scale. |
| 599 | * @hide |
| 600 | */ |
| 601 | public void scale(float scale) { |
| 602 | if (scale != 1.0f) { |
| 603 | left = left * scale; |
| 604 | top = top * scale ; |
| 605 | right = right * scale; |
| 606 | bottom = bottom * scale; |
| 607 | } |
| 608 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 609 | } |