diff options
| -rw-r--r-- | java/src/com/android/inputmethod/latin/utils/CoordinateUtils.java | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/java/src/com/android/inputmethod/latin/utils/CoordinateUtils.java b/java/src/com/android/inputmethod/latin/utils/CoordinateUtils.java index 87df013a6..3a9705904 100644 --- a/java/src/com/android/inputmethod/latin/utils/CoordinateUtils.java +++ b/java/src/com/android/inputmethod/latin/utils/CoordinateUtils.java @@ -16,7 +16,7 @@ package com.android.inputmethod.latin.utils; -import java.util.Arrays; +import javax.annotation.Nonnull; public final class CoordinateUtils { private static final int INDEX_X = 0; @@ -27,32 +27,35 @@ public final class CoordinateUtils { // This utility class is not publicly instantiable. } + @Nonnull public static int[] newInstance() { return new int[ELEMENT_SIZE]; } - public static int x(final int[] coords) { + public static int x(@Nonnull final int[] coords) { return coords[INDEX_X]; } - public static int y(final int[] coords) { + public static int y(@Nonnull final int[] coords) { return coords[INDEX_Y]; } - public static void set(final int[] coords, final int x, final int y) { + public static void set(@Nonnull final int[] coords, final int x, final int y) { coords[INDEX_X] = x; coords[INDEX_Y] = y; } - public static void copy(final int[] destination, final int[] source) { + public static void copy(@Nonnull final int[] destination, @Nonnull final int[] source) { destination[INDEX_X] = source[INDEX_X]; destination[INDEX_Y] = source[INDEX_Y]; } + @Nonnull public static int[] newCoordinateArray(final int arraySize) { return new int[ELEMENT_SIZE * arraySize]; } + @Nonnull public static int[] newCoordinateArray(final int arraySize, final int defaultX, final int defaultY) { final int[] result = new int[ELEMENT_SIZE * arraySize]; @@ -62,30 +65,30 @@ public final class CoordinateUtils { return result; } - public static int xFromArray(final int[] coordsArray, final int index) { + public static int xFromArray(@Nonnull final int[] coordsArray, final int index) { return coordsArray[ELEMENT_SIZE * index + INDEX_X]; } - public static int yFromArray(final int[] coordsArray, final int index) { + public static int yFromArray(@Nonnull final int[] coordsArray, final int index) { return coordsArray[ELEMENT_SIZE * index + INDEX_Y]; } - public static int[] coordinateFromArray(final int[] coordsArray, final int index) { - final int baseIndex = ELEMENT_SIZE * index; - return Arrays.copyOfRange(coordsArray, baseIndex, baseIndex + ELEMENT_SIZE); + @Nonnull + public static int[] coordinateFromArray(@Nonnull final int[] coordsArray, final int index) { + final int[] coords = newInstance(); + set(coords, xFromArray(coordsArray, index), yFromArray(coordsArray, index)); + return coords; } - public static void setXYInArray(final int[] coordsArray, final int index, + public static void setXYInArray(@Nonnull final int[] coordsArray, final int index, final int x, final int y) { final int baseIndex = ELEMENT_SIZE * index; coordsArray[baseIndex + INDEX_X] = x; coordsArray[baseIndex + INDEX_Y] = y; } - public static void setCoordinateInArray(final int[] coordsArray, final int index, - final int[] coords) { - final int baseIndex = ELEMENT_SIZE * index; - coordsArray[baseIndex + INDEX_X] = coords[INDEX_X]; - coordsArray[baseIndex + INDEX_Y] = coords[INDEX_Y]; + public static void setCoordinateInArray(@Nonnull final int[] coordsArray, final int index, + @Nonnull final int[] coords) { + setXYInArray(coordsArray, index, x(coords), y(coords)); } } |