| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.core.animation; |
| |
| import android.annotation.SuppressLint; |
| import android.graphics.Path; |
| import android.graphics.PointF; |
| import android.util.Log; |
| import android.util.Property; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| /** |
| * This class holds information about a property and the values that that property |
| * should take on during an animation. PropertyValuesHolder objects can be used to create |
| * animations with ValueAnimator or ObjectAnimator that operate on several different properties |
| * in parallel. |
| */ |
| @SuppressWarnings("unchecked") |
| public class PropertyValuesHolder implements Cloneable { |
| |
| /** |
| * The name of the property associated with the values. This need not be a real property, |
| * unless this object is being used with ObjectAnimator. But this is the name by which |
| * aniamted values are looked up with getAnimatedValue(String) in ValueAnimator. |
| */ |
| String mPropertyName; |
| |
| Property mProperty; |
| |
| /** |
| * The setter function, if needed. ObjectAnimator hands off this functionality to |
| * PropertyValuesHolder, since it holds all of the per-property information. This |
| * property is automatically |
| * derived when the animation starts in setupSetterAndGetter() if using ObjectAnimator. |
| */ |
| Method mSetter = null; |
| |
| /** |
| * The getter function, if needed. ObjectAnimator hands off this functionality to |
| * PropertyValuesHolder, since it holds all of the per-property information. This |
| * property is automatically |
| * derived when the animation starts in setupSetterAndGetter() if using ObjectAnimator. |
| * The getter is only derived and used if one of the values is null. |
| */ |
| private Method mGetter = null; |
| |
| /** |
| * The type of values supplied. This information is used both in deriving the setter/getter |
| * functions and in deriving the type of TypeEvaluator. |
| */ |
| Class<?> mValueType; |
| |
| /** |
| * The set of keyframes (time/value pairs) that define this animation. |
| */ |
| Keyframes mKeyframes = null; |
| |
| // We try several different types when searching for appropriate setter/getter functions. |
| // The caller may have supplied values in a type that does not match the setter/getter |
| // functions (such as the integers 0 and 1 to represent floating point values for alpha). |
| // Also, the use of generics in constructors means that we end up with the Object versions |
| // of primitive types (Float vs. float). But most likely, the setter/getter functions |
| // will take primitive types instead. |
| // So we supply an ordered array of other types to try before giving up. |
| private static final Class<?>[] FLOAT_VARIANTS = {float.class, Float.class, double.class, |
| int.class, Double.class, Integer.class}; |
| private static final Class<?>[] INTEGER_VARIANTS = {int.class, Integer.class, float.class, |
| double.class, Float.class, Double.class}; |
| private static final Class<?>[] DOUBLE_VARIANTS = {double.class, Double.class, float.class, |
| int.class, Float.class, Integer.class}; |
| |
| // These maps hold all property entries for a particular class. This map |
| // is used to speed up property/setter/getter lookups for a given class/property |
| // combination. No need to use reflection on the combination more than once. |
| static final HashMap<Class<?>, HashMap<String, Method>> sSetterPropertyMap = |
| new HashMap<>(); |
| private static final HashMap<Class<?>, HashMap<String, Method>> sGetterPropertyMap = |
| new HashMap<>(); |
| |
| // Used to pass single value to varargs parameter in setter invocation |
| final Object[] mTmpValueArray = new Object[1]; |
| |
| /** |
| * The type evaluator used to calculate the animated values. This evaluator is determined |
| * automatically based on the type of the start/end objects passed into the constructor, |
| * but the system only knows about the primitive types int and float. Any other |
| * type will need to set the evaluator to a custom evaluator for that type. |
| */ |
| private TypeEvaluator mEvaluator; |
| |
| /** |
| * The value most recently calculated by calculateValue(). This is set during |
| * that function and might be retrieved later either by ValueAnimator.animatedValue() or |
| * by the property-setting logic in ObjectAnimator.animatedValue(). |
| */ |
| private Object mAnimatedValue; |
| |
| /** |
| * Converts from the source Object type to the setter Object type. |
| */ |
| private TypeConverter mConverter; |
| |
| /** |
| * Internal utility constructor, used by the factory methods to set the property name. |
| * @param propertyName The name of the property for this holder. |
| */ |
| PropertyValuesHolder(String propertyName) { |
| mPropertyName = propertyName; |
| } |
| |
| /** |
| * Internal utility constructor, used by the factory methods to set the property. |
| * @param property The property for this holder. |
| */ |
| PropertyValuesHolder(Property property) { |
| mProperty = property; |
| if (property != null) { |
| mPropertyName = property.getName(); |
| } |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and |
| * set of int values. |
| * @param propertyName The name of the property being animated. |
| * @param values The values that the named property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofInt(@NonNull String propertyName, @NonNull int... values) { |
| return new IntPropertyValuesHolder(propertyName, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of int values. |
| * @param property The property being animated. Should not be null. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofInt(@NonNull Property<?, Integer> property, |
| @NonNull int... values) { |
| return new IntPropertyValuesHolder(property, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and |
| * set of <code>int[]</code> values. At least two <code>int[]</code> values must be supplied, |
| * a start and end value. If more values are supplied, the values will be animated from the |
| * start, through all intermediate values to the end value. When used with ObjectAnimator, |
| * the elements of the array represent the parameters of the setter function. |
| * |
| * @param propertyName The name of the property being animated. Can also be the |
| * case-sensitive name of the entire setter method. Should not be null. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see IntArrayEvaluator#IntArrayEvaluator(int[]) |
| * @see ObjectAnimator#ofMultiInt(Object, String, TypeConverter, TypeEvaluator, Object[]) |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofMultiInt( |
| @NonNull String propertyName, |
| @SuppressLint("ArrayReturn") /* Platform API */ @NonNull int[][] values |
| ) { |
| if (values.length < 2) { |
| throw new IllegalArgumentException("At least 2 values must be supplied"); |
| } |
| int numParameters = 0; |
| for (int i = 0; i < values.length; i++) { |
| if (values[i] == null) { |
| throw new IllegalArgumentException("values must not be null"); |
| } |
| int length = values[i].length; |
| if (i == 0) { |
| numParameters = length; |
| } else if (length != numParameters) { |
| throw new IllegalArgumentException("Values must all have the same length"); |
| } |
| } |
| IntArrayEvaluator evaluator = new IntArrayEvaluator(new int[numParameters]); |
| return new MultiIntValuesHolder(propertyName, null, evaluator, (Object[]) values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name to use |
| * as a multi-int setter. The values are animated along the path, with the first |
| * parameter of the setter set to the x coordinate and the second set to the y coordinate. |
| * |
| * @param propertyName The name of the property being animated. Can also be the |
| * case-sensitive name of the entire setter method. Should not be null. |
| * The setter must take exactly two <code>int</code> parameters. |
| * @param path The Path along which the values should be animated. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see ObjectAnimator#ofPropertyValuesHolder(Object, PropertyValuesHolder...) |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofMultiInt(@NonNull String propertyName, |
| @NonNull Path path) { |
| Keyframes keyframes = KeyframeSet.ofPath(path); |
| PointFToIntArray converter = new PointFToIntArray(); |
| return new MultiIntValuesHolder(propertyName, converter, null, keyframes); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of Object values for use with ObjectAnimator multi-value setters. The Object |
| * values are converted to <code>int[]</code> using the converter. |
| * |
| * @param propertyName The property being animated or complete name of the setter. |
| * Should not be null. |
| * @param converter Used to convert the animated value to setter parameters. |
| * @param evaluator A TypeEvaluator that will be called on each animation frame to |
| * provide the necessary interpolation between the Object values to derive the animated |
| * value. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see ObjectAnimator#ofMultiInt(Object, String, TypeConverter, TypeEvaluator, Object[]) |
| * @see ObjectAnimator#ofPropertyValuesHolder(Object, PropertyValuesHolder...) |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <V> PropertyValuesHolder ofMultiInt(@NonNull String propertyName, |
| @NonNull TypeConverter<V, int[]> converter, |
| @NonNull TypeEvaluator<V> evaluator, @NonNull V... values) { |
| return new MultiIntValuesHolder(propertyName, converter, evaluator, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder object with the specified property name or |
| * setter name for use in a multi-int setter function using ObjectAnimator. The values can be |
| * of any type, but the type should be consistent so that the supplied |
| * {@link TypeEvaluator} can be used to to evaluate the animated value. The |
| * <code>converter</code> converts the values to parameters in the setter function. |
| * |
| * <p>At least two values must be supplied, a start and an end value.</p> |
| * |
| * @param propertyName The name of the property to associate with the set of values. This |
| * may also be the complete name of a setter function. |
| * @param converter Converts <code>values</code> into int parameters for the setter. |
| * Can be null if the Keyframes have int[] values. |
| * @param evaluator Used to interpolate between values. |
| * @param values The values at specific fractional times to evaluate between |
| * @return A PropertyValuesHolder for a multi-int parameter setter. |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <T> PropertyValuesHolder ofMultiInt(@NonNull String propertyName, |
| @Nullable TypeConverter<T, int[]> converter, @NonNull TypeEvaluator<T> evaluator, |
| @NonNull Keyframe... values) { |
| KeyframeSet keyframeSet = KeyframeSet.ofKeyframe(values); |
| return new MultiIntValuesHolder(propertyName, converter, evaluator, keyframeSet); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and |
| * set of float values. |
| * @param propertyName The name of the property being animated. |
| * @param values The values that the named property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofFloat(@NonNull String propertyName, |
| @NonNull float... values) { |
| return new FloatPropertyValuesHolder(propertyName, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of float values. |
| * @param property The property being animated. Should not be null. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofFloat(@NonNull Property<?, Float> property, |
| @NonNull float... values) { |
| return new FloatPropertyValuesHolder(property, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and set of |
| * <code>float[]</code> values. At least two <code>float[]</code> values must be supplied, |
| * a start and end value. If more values are supplied, the values will be animated from the |
| * start, through all intermediate values to the end value. When used with ObjectAnimator, |
| * the elements of the array represent the parameters of the setter function. |
| * |
| * @param propertyName The name of the property being animated. Can also be the |
| * case-sensitive name of the entire setter method. Should not be null. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see FloatArrayEvaluator#FloatArrayEvaluator(float[]) |
| * @see ObjectAnimator#ofMultiFloat(Object, String, TypeConverter, TypeEvaluator, Object[]) |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofMultiFloat( |
| @NonNull String propertyName, |
| @SuppressLint("ArrayReturn") /* Platform API */ @NonNull float[][] values |
| ) { |
| if (values.length < 2) { |
| throw new IllegalArgumentException("At least 2 values must be supplied"); |
| } |
| int numParameters = 0; |
| for (int i = 0; i < values.length; i++) { |
| if (values[i] == null) { |
| throw new IllegalArgumentException("values must not be null"); |
| } |
| int length = values[i].length; |
| if (i == 0) { |
| numParameters = length; |
| } else if (length != numParameters) { |
| throw new IllegalArgumentException("Values must all have the same length"); |
| } |
| } |
| FloatArrayEvaluator evaluator = new FloatArrayEvaluator(new float[numParameters]); |
| return new MultiFloatValuesHolder(propertyName, null, evaluator, (Object[]) values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name to use |
| * as a multi-float setter. The values are animated along the path, with the first |
| * parameter of the setter set to the x coordinate and the second set to the y coordinate. |
| * |
| * @param propertyName The name of the property being animated. Can also be the |
| * case-sensitive name of the entire setter method. Should not be null. |
| * The setter must take exactly two <code>float</code> parameters. |
| * @param path The Path along which the values should be animated. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see ObjectAnimator#ofPropertyValuesHolder(Object, PropertyValuesHolder...) |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofMultiFloat(@NonNull String propertyName, |
| @NonNull Path path) { |
| Keyframes keyframes = KeyframeSet.ofPath(path); |
| PointFToFloatArray converter = new PointFToFloatArray(); |
| return new MultiFloatValuesHolder(propertyName, converter, null, keyframes); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of Object values for use with ObjectAnimator multi-value setters. The Object |
| * values are converted to <code>float[]</code> using the converter. |
| * |
| * @param propertyName The property being animated or complete name of the setter. |
| * Should not be null. |
| * @param converter Used to convert the animated value to setter parameters. |
| * @param evaluator A TypeEvaluator that will be called on each animation frame to |
| * provide the necessary interpolation between the Object values to derive the animated |
| * value. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see ObjectAnimator#ofMultiFloat(Object, String, TypeConverter, TypeEvaluator, Object[]) |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <V> PropertyValuesHolder ofMultiFloat(@NonNull String propertyName, |
| @NonNull TypeConverter<V, float[]> converter, |
| @NonNull TypeEvaluator<V> evaluator, @NonNull V... values) { |
| return new MultiFloatValuesHolder(propertyName, converter, evaluator, values); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder object with the specified property name or |
| * setter name for use in a multi-float setter function using ObjectAnimator. The values can be |
| * of any type, but the type should be consistent so that the supplied |
| * {@link TypeEvaluator} can be used to to evaluate the animated value. The |
| * <code>converter</code> converts the values to parameters in the setter function. |
| * |
| * <p>At least two values must be supplied, a start and an end value.</p> |
| * |
| * @param propertyName The name of the property to associate with the set of values. This |
| * may also be the complete name of a setter function. |
| * @param converter Converts <code>values</code> into float parameters for the setter. |
| * Can be null if the Keyframes have float[] values. |
| * @param evaluator Used to interpolate between values. |
| * @param values The values at specific fractional times to evaluate between |
| * @return A PropertyValuesHolder for a multi-float parameter setter. |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <T> PropertyValuesHolder ofMultiFloat(@NonNull String propertyName, |
| @Nullable TypeConverter<T, float[]> converter, |
| @NonNull TypeEvaluator<T> evaluator, |
| @NonNull Keyframe... values) { |
| KeyframeSet keyframeSet = KeyframeSet.ofKeyframe(values); |
| return new MultiFloatValuesHolder(propertyName, converter, evaluator, keyframeSet); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and |
| * set of Object values. This variant also takes a TypeEvaluator because the system |
| * cannot automatically interpolate between objects of unknown type. |
| * |
| * <p><strong>Note:</strong> The Object values are stored as references to the original |
| * objects, which means that changes to those objects after this method is called will |
| * affect the values on the PropertyValuesHolder. If the objects will be mutated externally |
| * after this method is called, callers should pass a copy of those objects instead. |
| * |
| * @param propertyName The name of the property being animated. |
| * @param evaluator A TypeEvaluator that will be called on each animation frame to |
| * provide the necessary interpolation between the Object values to derive the animated |
| * value. |
| * @param values The values that the named property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofObject(@NonNull String propertyName, |
| @NonNull TypeEvaluator evaluator, @NonNull Object... values) { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(propertyName); |
| pvh.setObjectValues(values); |
| pvh.setEvaluator(evaluator); |
| return pvh; |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property name and |
| * a Path along which the values should be animated. This variant supports a |
| * <code>TypeConverter</code> to convert from <code>PointF</code> to the target |
| * type. |
| * |
| * <p>The PointF passed to <code>converter</code> or <code>property</code>, if |
| * <code>converter</code> is <code>null</code>, is reused on each animation frame and should |
| * not be stored by the setter or TypeConverter.</p> |
| * |
| * @param propertyName The name of the property being animated. |
| * @param converter Converts a PointF to the type associated with the setter. May be |
| * null if conversion is unnecessary. |
| * @param path The Path along which the values should be animated. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static PropertyValuesHolder ofObject(@NonNull String propertyName, |
| @Nullable TypeConverter<PointF, ?> converter, @NonNull Path path) { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(propertyName); |
| pvh.mKeyframes = KeyframeSet.ofPath(path); |
| pvh.mValueType = PointF.class; |
| pvh.setConverter(converter); |
| return pvh; |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of Object values. This variant also takes a TypeEvaluator because the system |
| * cannot automatically interpolate between objects of unknown type. |
| * |
| * <p><strong>Note:</strong> The Object values are stored as references to the original |
| * objects, which means that changes to those objects after this method is called will |
| * affect the values on the PropertyValuesHolder. If the objects will be mutated externally |
| * after this method is called, callers should pass a copy of those objects instead. |
| * |
| * @param property The property being animated. Should not be null. |
| * @param evaluator A TypeEvaluator that will be called on each animation frame to |
| * provide the necessary interpolation between the Object values to derive the animated |
| * value. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <V> PropertyValuesHolder ofObject(@NonNull Property property, |
| @NonNull TypeEvaluator<V> evaluator, @NonNull V... values) { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(property); |
| pvh.setObjectValues(values); |
| pvh.setEvaluator(evaluator); |
| return pvh; |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * set of Object values. This variant also takes a TypeEvaluator because the system |
| * cannot automatically interpolate between objects of unknown type. This variant also |
| * takes a <code>TypeConverter</code> to convert from animated values to the type |
| * of the property. If only one value is supplied, the <code>TypeConverter</code> |
| * must be a {@link BidirectionalTypeConverter} to retrieve the current |
| * value. |
| * |
| * <p><strong>Note:</strong> The Object values are stored as references to the original |
| * objects, which means that changes to those objects after this method is called will |
| * affect the values on the PropertyValuesHolder. If the objects will be mutated externally |
| * after this method is called, callers should pass a copy of those objects instead. |
| * |
| * @param property The property being animated. Should not be null. |
| * @param converter Converts the animated object to the Property type. |
| * @param evaluator A TypeEvaluator that will be called on each animation frame to provide the |
| * necessary interpolation between the Object values to derive the animated |
| * value. |
| * @param values The values that the property will animate between. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| * @see #setConverter(TypeConverter) |
| * @see TypeConverter |
| */ |
| @SafeVarargs |
| @NonNull |
| public static <T, V> PropertyValuesHolder ofObject(@NonNull Property<?, V> property, |
| @NonNull TypeConverter<T, V> converter, @NonNull TypeEvaluator<T> evaluator, |
| @NonNull T... values) { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(property); |
| pvh.setConverter(converter); |
| pvh.setObjectValues(values); |
| pvh.setEvaluator(evaluator); |
| return pvh; |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder with a given property and |
| * a Path along which the values should be animated. This variant supports a |
| * <code>TypeConverter</code> to convert from <code>PointF</code> to the target |
| * type. |
| * |
| * <p>The PointF passed to <code>converter</code> or <code>property</code>, if |
| * <code>converter</code> is <code>null</code>, is reused on each animation frame and should |
| * not be stored by the setter or TypeConverter.</p> |
| * |
| * @param property The property being animated. Should not be null. |
| * @param converter Converts a PointF to the type associated with the setter. May be |
| * null if conversion is unnecessary. |
| * @param path The Path along which the values should be animated. |
| * @return PropertyValuesHolder The constructed PropertyValuesHolder object. |
| */ |
| @NonNull |
| public static <V> PropertyValuesHolder ofObject(@NonNull Property<?, V> property, |
| @Nullable TypeConverter<PointF, V> converter, @NonNull Path path) { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(property); |
| pvh.mKeyframes = KeyframeSet.ofPath(path); |
| pvh.mValueType = PointF.class; |
| pvh.setConverter(converter); |
| return pvh; |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder object with the specified property name and set |
| * of values. These values can be of any type, but the type should be consistent so that |
| * an appropriate {@link TypeEvaluator} can be found that matches |
| * the common type. |
| * <p>If there is only one value, it is assumed to be the end value of an animation, |
| * and an initial value will be derived, if possible, by calling a getter function |
| * on the object. Also, if any value is null, the value will be filled in when the animation |
| * starts in the same way. This mechanism of automatically getting null values only works |
| * if the PropertyValuesHolder object is used in conjunction {@link ObjectAnimator}, and with a |
| * getter function derived automatically from <code>propertyName</code>, since otherwise |
| * PropertyValuesHolder has no way of determining what the value should be. |
| * @param propertyName The name of the property associated with this set of values. This |
| * can be the actual property name to be used when using a ObjectAnimator object, or |
| * just a name used to get animated values, such as if this object is used with an |
| * ValueAnimator object. |
| * @param values The set of values to animate between. |
| */ |
| @SafeVarargs |
| @NonNull |
| public static PropertyValuesHolder ofKeyframe(@NonNull String propertyName, |
| @NonNull Keyframe... values) { |
| KeyframeSet keyframeSet = KeyframeSet.ofKeyframe(values); |
| return ofKeyframes(propertyName, keyframeSet); |
| } |
| |
| /** |
| * Constructs and returns a PropertyValuesHolder object with the specified property and set |
| * of values. These values can be of any type, but the type should be consistent so that |
| * an appropriate {@link androidx.core.animation.TypeEvaluator} can be found that matches |
| * the common type. |
| * <p>If there is only one value, it is assumed to be the end value of an animation, |
| * and an initial value will be derived, if possible, by calling the property's |
| * {@link android.util.Property#get(Object)} function. |
| * Also, if any value is null, the value will be filled in when the animation |
| * starts in the same way. This mechanism of automatically getting null values only works |
| * if the PropertyValuesHolder object is used in conjunction with |
| * {@link ObjectAnimator}, since otherwise PropertyValuesHolder has |
| * no way of determining what the value should be. |
| * @param property The property associated with this set of values. Should not be null. |
| * @param values The set of values to animate between. |
| */ |
| @SafeVarargs |
| @NonNull |
| public static PropertyValuesHolder ofKeyframe(@NonNull Property property, |
| @NonNull Keyframe... values) { |
| KeyframeSet keyframeSet = KeyframeSet.ofKeyframe(values); |
| return ofKeyframes(property, keyframeSet); |
| } |
| |
| static PropertyValuesHolder ofKeyframes(String propertyName, Keyframes keyframes) { |
| if (keyframes instanceof Keyframes.IntKeyframes) { |
| return new IntPropertyValuesHolder(propertyName, (Keyframes.IntKeyframes) keyframes); |
| } else if (keyframes instanceof Keyframes.FloatKeyframes) { |
| return new FloatPropertyValuesHolder(propertyName, |
| (Keyframes.FloatKeyframes) keyframes); |
| } else { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(propertyName); |
| pvh.mKeyframes = keyframes; |
| pvh.mValueType = keyframes.getType(); |
| return pvh; |
| } |
| } |
| |
| static PropertyValuesHolder ofKeyframes(Property property, Keyframes keyframes) { |
| if (keyframes instanceof Keyframes.IntKeyframes) { |
| return new IntPropertyValuesHolder(property, (Keyframes.IntKeyframes) keyframes); |
| } else if (keyframes instanceof Keyframes.FloatKeyframes) { |
| return new FloatPropertyValuesHolder(property, (Keyframes.FloatKeyframes) keyframes); |
| } else { |
| PropertyValuesHolder pvh = new PropertyValuesHolder(property); |
| pvh.mKeyframes = keyframes; |
| pvh.mValueType = keyframes.getType(); |
| return pvh; |
| } |
| } |
| |
| /** |
| * Set the animated values for this object to this set of ints. |
| * If there is only one value, it is assumed to be the end value of an animation, |
| * and an initial value will be derived, if possible, by calling a getter function |
| * on the object. Also, if any value is null, the value will be filled in when the animation |
| * starts in the same way. This mechanism of automatically getting null values only works |
| * if the PropertyValuesHolder object is used in conjunction {@link ObjectAnimator}, and with a |
| * getter function derived automatically from <code>propertyName</code>, since otherwise |
| * PropertyValuesHolder has no way of determining what the value should be. |
| * |
| * @param values One or more values that the animation will animate between. |
| */ |
| public void setIntValues(@NonNull int... values) { |
| mValueType = int.class; |
| mKeyframes = KeyframeSet.ofInt(values); |
| } |
| |
| /** |
| * Set the animated values for this object to this set of floats. |
| * If there is only one value, it is assumed to be the end value of an animation, |
| * and an initial value will be derived, if possible, by calling a getter function |
| * on the object. Also, if any value is null, the value will be filled in when the animation |
| * starts in the same way. This mechanism of automatically getting null values only works |
| * if the PropertyValuesHolder object is used in conjunction {@link ObjectAnimator}, and with a |
| * getter function derived automatically from <code>propertyName</code>, since otherwise |
| * PropertyValuesHolder has no way of determining what the value should be. |
| * |
| * @param values One or more values that the animation will animate between. |
| */ |
| public void setFloatValues(@NonNull float... values) { |
| mValueType = float.class; |
| mKeyframes = KeyframeSet.ofFloat(values); |
| } |
| |
| /** |
| * Set the animated values for this object to this set of Keyframes. |
| * |
| * @param values One or more values that the animation will animate between. |
| */ |
| public void setKeyframes(@NonNull Keyframe... values) { |
| int numKeyframes = values.length; |
| Keyframe[] keyframes = new Keyframe[Math.max(numKeyframes, 2)]; |
| mValueType = values[0].getType(); |
| for (int i = 0; i < numKeyframes; ++i) { |
| keyframes[i] = values[i]; |
| } |
| mKeyframes = new KeyframeSet(keyframes); |
| } |
| |
| /** |
| * Set the animated values for this object to this set of Objects. |
| * If there is only one value, it is assumed to be the end value of an animation, |
| * and an initial value will be derived, if possible, by calling a getter function |
| * on the object. Also, if any value is null, the value will be filled in when the animation |
| * starts in the same way. This mechanism of automatically getting null values only works |
| * if the PropertyValuesHolder object is used in conjunction {@link ObjectAnimator}, and with |
| * a getter function derived automatically from <code>propertyName</code>, since otherwise |
| * PropertyValuesHolder has no way of determining what the value should be. |
| * |
| * <p><strong>Note:</strong> The Object values are stored as references to the original |
| * objects, which means that changes to those objects after this method is called will |
| * affect the values on the PropertyValuesHolder. If the objects will be mutated externally |
| * after this method is called, callers should pass a copy of those objects instead. |
| * |
| * @param values One or more values that the animation will animate between. |
| */ |
| public void setObjectValues(@NonNull Object... values) { |
| mValueType = values[0].getClass(); |
| mKeyframes = KeyframeSet.ofObject(values); |
| if (mEvaluator != null) { |
| mKeyframes.setEvaluator(mEvaluator); |
| } |
| } |
| |
| /** |
| * Sets the converter to convert from the values type to the setter's parameter type. |
| * If only one value is supplied, <var>converter</var> must be a |
| * {@link BidirectionalTypeConverter}. |
| * @param converter The converter to use to convert values. |
| */ |
| public void setConverter(@Nullable TypeConverter converter) { |
| mConverter = converter; |
| } |
| |
| /** |
| * Determine the setter or getter function using the JavaBeans convention of setFoo or |
| * getFoo for a property named 'foo'. This function figures out what the name of the |
| * function should be and uses reflection to find the Method with that name on the |
| * target object. |
| * |
| * @param targetClass The class to search for the method |
| * @param prefix "set" or "get", depending on whether we need a setter or getter. |
| * @param valueType The type of the parameter (in the case of a setter). This type |
| * is derived from the values set on this PropertyValuesHolder. This type is used as |
| * a first guess at the parameter type, but we check for methods with several different |
| * types to avoid problems with slight mis-matches between supplied values and actual |
| * value types used on the setter. |
| * @return Method the method associated with mPropertyName. |
| */ |
| private Method getPropertyFunction(Class<?> targetClass, String prefix, Class<?> valueType) { |
| // TODO: faster implementation... |
| Method returnVal = null; |
| String methodName = getMethodName(prefix, mPropertyName); |
| Class<?>[] args = null; |
| if (valueType == null) { |
| try { |
| returnVal = targetClass.getMethod(methodName, args); |
| } catch (NoSuchMethodException e) { |
| // Swallow the error, log it later |
| } |
| } else { |
| args = new Class<?>[1]; |
| Class<?>[] typeVariants; |
| if (valueType.equals(Float.class)) { |
| typeVariants = FLOAT_VARIANTS; |
| } else if (valueType.equals(Integer.class)) { |
| typeVariants = INTEGER_VARIANTS; |
| } else if (valueType.equals(Double.class)) { |
| typeVariants = DOUBLE_VARIANTS; |
| } else { |
| typeVariants = new Class<?>[1]; |
| typeVariants[0] = valueType; |
| } |
| for (Class<?> typeVariant : typeVariants) { |
| args[0] = typeVariant; |
| try { |
| returnVal = targetClass.getMethod(methodName, args); |
| if (mConverter == null) { |
| // change the value type to suit |
| mValueType = typeVariant; |
| } |
| return returnVal; |
| } catch (NoSuchMethodException e) { |
| // Swallow the error and keep trying other variants |
| } |
| try { |
| returnVal = targetClass.getDeclaredMethod(methodName, args); |
| returnVal.setAccessible(true); |
| if (mConverter == null) { |
| // change the value type to suit |
| mValueType = typeVariant; |
| } |
| return returnVal; |
| } catch (NoSuchMethodException e) { |
| // Swallow the error and keep trying other variants |
| } |
| } |
| // If we got here, then no appropriate function was found |
| } |
| |
| if (returnVal == null) { |
| Log.w("PropertyValuesHolder", "Method " |
| + getMethodName(prefix, mPropertyName) + "() with type " + valueType |
| + " not found on target class " + targetClass); |
| } |
| |
| return returnVal; |
| } |
| |
| |
| /** |
| * Returns the setter or getter requested. This utility function checks whether the |
| * requested method exists in the propertyMapMap cache. If not, it calls another |
| * utility function to request the Method from the targetClass directly. |
| * @param targetClass The Class on which the requested method should exist. |
| * @param propertyMapMap The cache of setters/getters derived so far. |
| * @param prefix "set" or "get", for the setter or getter. |
| * @param valueType The type of parameter passed into the method (null for getter). |
| * @return Method the method associated with mPropertyName. |
| */ |
| private Method setupSetterOrGetter(Class<?> targetClass, |
| HashMap<Class<?>, HashMap<String, Method>> propertyMapMap, |
| String prefix, Class<?> valueType) { |
| Method setterOrGetter = null; |
| synchronized (propertyMapMap) { |
| // Have to lock property map prior to reading it, to guard against |
| // another thread putting something in there after we've checked it |
| // but before we've added an entry to it |
| HashMap<String, Method> propertyMap = propertyMapMap.get(targetClass); |
| boolean wasInMap = false; |
| if (propertyMap != null) { |
| wasInMap = propertyMap.containsKey(mPropertyName); |
| if (wasInMap) { |
| setterOrGetter = propertyMap.get(mPropertyName); |
| } |
| } |
| if (!wasInMap) { |
| setterOrGetter = getPropertyFunction(targetClass, prefix, valueType); |
| if (propertyMap == null) { |
| propertyMap = new HashMap<String, Method>(); |
| propertyMapMap.put(targetClass, propertyMap); |
| } |
| propertyMap.put(mPropertyName, setterOrGetter); |
| } |
| } |
| return setterOrGetter; |
| } |
| |
| /** |
| * Utility function to get the setter from targetClass |
| * @param targetClass The Class on which the requested method should exist. |
| */ |
| void setupSetter(Class<?> targetClass) { |
| Class<?> propertyType = mConverter == null ? mValueType : mConverter.getTargetType(); |
| mSetter = setupSetterOrGetter(targetClass, sSetterPropertyMap, "set", propertyType); |
| } |
| |
| /** |
| * Utility function to get the getter from targetClass |
| */ |
| private void setupGetter(Class<?> targetClass) { |
| mGetter = setupSetterOrGetter(targetClass, sGetterPropertyMap, "get", null); |
| } |
| |
| /** |
| * Internal function (called from ObjectAnimator) to set up the setter and getter |
| * prior to running the animation. If the setter has not been manually set for this |
| * object, it will be derived automatically given the property name, target object, and |
| * types of values supplied. If no getter has been set, it will be supplied iff any of the |
| * supplied values was null. If there is a null value, then the getter (supplied or derived) |
| * will be called to set those null values to the current value of the property |
| * on the target object. |
| * @param target The object on which the setter (and possibly getter) exist. |
| */ |
| void setupSetterAndGetter(Object target) { |
| if (mProperty != null) { |
| // check to make sure that mProperty is on the class of target |
| try { |
| Object testValue = null; |
| List<Keyframe> keyframes = mKeyframes.getKeyframes(); |
| int keyframeCount = keyframes == null ? 0 : keyframes.size(); |
| for (int i = 0; i < keyframeCount; i++) { |
| Keyframe kf = keyframes.get(i); |
| if (!kf.hasValue() || kf.valueWasSetOnStart()) { |
| if (testValue == null) { |
| testValue = convertBack(mProperty.get(target)); |
| } |
| kf.setValue(testValue); |
| kf.setValueWasSetOnStart(true); |
| } |
| } |
| return; |
| } catch (ClassCastException e) { |
| Log.w("PropertyValuesHolder", "No such property (" + mProperty.getName() |
| + ") on target object " + target + ". Trying reflection instead"); |
| mProperty = null; |
| } |
| } |
| // We can't just say 'else' here because the catch statement sets mProperty to null. |
| if (mProperty == null) { |
| Class<?> targetClass = target.getClass(); |
| if (mSetter == null) { |
| setupSetter(targetClass); |
| } |
| List<Keyframe> keyframes = mKeyframes.getKeyframes(); |
| int keyframeCount = keyframes == null ? 0 : keyframes.size(); |
| for (int i = 0; i < keyframeCount; i++) { |
| Keyframe kf = keyframes.get(i); |
| if (!kf.hasValue() || kf.valueWasSetOnStart()) { |
| if (mGetter == null) { |
| setupGetter(targetClass); |
| if (mGetter == null) { |
| // Already logged the error - just return to avoid NPE |
| return; |
| } |
| } |
| try { |
| Object value = convertBack(mGetter.invoke(target)); |
| kf.setValue(value); |
| kf.setValueWasSetOnStart(true); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| } |
| } |
| |
| private Object convertBack(Object value) { |
| if (mConverter != null) { |
| if (!(mConverter instanceof BidirectionalTypeConverter)) { |
| throw new IllegalArgumentException("Converter " |
| + mConverter.getClass().getName() |
| + " must be a BidirectionalTypeConverter"); |
| } |
| value = ((BidirectionalTypeConverter) mConverter).convertBack(value); |
| } |
| return value; |
| } |
| |
| /** |
| * Utility function to set the value stored in a particular Keyframe. The value used is |
| * whatever the value is for the property name specified in the keyframe on the target object. |
| * |
| * @param target The target object from which the current value should be extracted. |
| * @param kf The keyframe which holds the property name and value. |
| */ |
| private void setupValue(Object target, Keyframe kf) { |
| if (mProperty != null) { |
| Object value = convertBack(mProperty.get(target)); |
| kf.setValue(value); |
| } else { |
| try { |
| if (mGetter == null) { |
| Class<?> targetClass = target.getClass(); |
| setupGetter(targetClass); |
| if (mGetter == null) { |
| // Already logged the error - just return to avoid NPE |
| return; |
| } |
| } |
| Object value = convertBack(mGetter.invoke(target)); |
| kf.setValue(value); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| /** |
| * This function is called by ObjectAnimator when setting the start values for an animation. |
| * The start values are set according to the current values in the target object. The |
| * property whose value is extracted is whatever is specified by the propertyName of this |
| * PropertyValuesHolder object. |
| * |
| * @param target The object which holds the start values that should be set. |
| */ |
| void setupStartValue(Object target) { |
| List<Keyframe> keyframes = mKeyframes.getKeyframes(); |
| if (!keyframes.isEmpty()) { |
| setupValue(target, keyframes.get(0)); |
| } |
| } |
| |
| /** |
| * This function is called by ObjectAnimator when setting the end values for an animation. |
| * The end values are set according to the current values in the target object. The |
| * property whose value is extracted is whatever is specified by the propertyName of this |
| * PropertyValuesHolder object. |
| * |
| * @param target The object which holds the start values that should be set. |
| */ |
| void setupEndValue(Object target) { |
| List<Keyframe> keyframes = mKeyframes.getKeyframes(); |
| if (!keyframes.isEmpty()) { |
| setupValue(target, keyframes.get(keyframes.size() - 1)); |
| } |
| } |
| |
| @SuppressLint("NoClone") /* Platform API */ |
| @NonNull |
| @Override |
| public PropertyValuesHolder clone() { |
| try { |
| PropertyValuesHolder newPVH = (PropertyValuesHolder) super.clone(); |
| newPVH.mPropertyName = mPropertyName; |
| newPVH.mProperty = mProperty; |
| newPVH.mKeyframes = mKeyframes.clone(); |
| newPVH.mEvaluator = mEvaluator; |
| return newPVH; |
| } catch (CloneNotSupportedException e) { |
| // won't reach here |
| return null; |
| } |
| } |
| |
| /** |
| * Internal function to set the value on the target object, using the setter set up |
| * earlier on this PropertyValuesHolder object. This function is called by ObjectAnimator |
| * to handle turning the value calculated by ValueAnimator into a value set on the object |
| * according to the name of the property. |
| * @param target The target object on which the value is set |
| */ |
| void setAnimatedValue(Object target) { |
| if (mProperty != null) { |
| mProperty.set(target, getAnimatedValue()); |
| } |
| if (mSetter != null) { |
| try { |
| mTmpValueArray[0] = getAnimatedValue(); |
| mSetter.invoke(target, mTmpValueArray); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Internal function, called by ValueAnimator, to set up the TypeEvaluator that will be used |
| * to calculate animated values. |
| */ |
| void init() { |
| if (mEvaluator == null) { |
| // We already handle int and float automatically, but not their Object |
| // equivalents |
| mEvaluator = (mValueType == Integer.class) ? IntEvaluator.getInstance() : |
| (mValueType == Float.class) ? FloatEvaluator.getInstance() : |
| null; |
| } |
| if (mEvaluator != null) { |
| // KeyframeSet knows how to evaluate the common types - only give it a custom |
| // evaluator if one has been set on this class |
| mKeyframes.setEvaluator(mEvaluator); |
| } |
| } |
| |
| /** |
| * The TypeEvaluator will be automatically determined based on the type of values |
| * supplied to PropertyValuesHolder. The evaluator can be manually set, however, if so |
| * desired. This may be important in cases where either the type of the values supplied |
| * do not match the way that they should be interpolated between, or if the values |
| * are of a custom type or one not currently understood by the animation system. Currently, |
| * only values of type float and int (and their Object equivalents: Float |
| * and Integer) are correctly interpolated; all other types require setting a TypeEvaluator. |
| * @param evaluator |
| */ |
| public void setEvaluator(@NonNull TypeEvaluator evaluator) { |
| mEvaluator = evaluator; |
| mKeyframes.setEvaluator(evaluator); |
| } |
| |
| /** |
| * Function used to calculate the value according to the evaluator set up for |
| * this PropertyValuesHolder object. This function is called by ValueAnimator.animateValue(). |
| * |
| * @param fraction The elapsed, interpolated fraction of the animation. |
| */ |
| void calculateValue(float fraction) { |
| Object value = mKeyframes.getValue(fraction); |
| mAnimatedValue = mConverter == null ? value : mConverter.convert(value); |
| } |
| |
| /** |
| * Sets the name of the property that will be animated. This name is used to derive |
| * a setter function that will be called to set animated values. |
| * For example, a property name of <code>foo</code> will result |
| * in a call to the function <code>setFoo()</code> on the target object. If either |
| * <code>valueFrom</code> or <code>valueTo</code> is null, then a getter function will |
| * also be derived and called. |
| * |
| * <p>Note that the setter function derived from this property name |
| * must take the same parameter type as the |
| * <code>valueFrom</code> and <code>valueTo</code> properties, otherwise the call to |
| * the setter function will fail.</p> |
| * |
| * @param propertyName The name of the property being animated. |
| */ |
| public void setPropertyName(@NonNull String propertyName) { |
| mPropertyName = propertyName; |
| } |
| |
| /** |
| * Sets the property that will be animated. |
| * |
| * <p>Note that if this PropertyValuesHolder object is used with ObjectAnimator, the property |
| * must exist on the target object specified in that ObjectAnimator.</p> |
| * |
| * @param property The property being animated. |
| */ |
| public void setProperty(@NonNull Property property) { |
| mProperty = property; |
| } |
| |
| /** |
| * Gets the name of the property that will be animated. This name will be used to derive |
| * a setter function that will be called to set animated values. |
| * For example, a property name of <code>foo</code> will result |
| * in a call to the function <code>setFoo()</code> on the target object. If either |
| * <code>valueFrom</code> or <code>valueTo</code> is null, then a getter function will |
| * also be derived and called. |
| */ |
| @NonNull |
| public String getPropertyName() { |
| return mPropertyName; |
| } |
| |
| /** |
| * Internal function, called by ValueAnimator and ObjectAnimator, to retrieve the value |
| * most recently calculated in calculateValue(). |
| * @return |
| */ |
| Object getAnimatedValue() { |
| return mAnimatedValue; |
| } |
| |
| Class<?> getValueType() { |
| return mValueType; |
| } |
| |
| @NonNull |
| @Override |
| public String toString() { |
| return mPropertyName + ": " + mKeyframes.toString(); |
| } |
| |
| /** |
| * Utility method to derive a setter/getter method name from a property name, where the |
| * prefix is typically "set" or "get" and the first letter of the property name is |
| * capitalized. |
| * |
| * @param prefix The precursor to the method name, before the property name begins, typically |
| * "set" or "get". |
| * @param propertyName The name of the property that represents the bulk of the method name |
| * after the prefix. The first letter of this word will be capitalized in the resulting |
| * method name. |
| * @return String the property name converted to a method name according to the conventions |
| * specified above. |
| */ |
| static String getMethodName(String prefix, String propertyName) { |
| if (propertyName == null || propertyName.length() == 0) { |
| // shouldn't get here |
| return prefix; |
| } |
| char firstLetter = Character.toUpperCase(propertyName.charAt(0)); |
| String theRest = propertyName.substring(1); |
| return prefix + firstLetter + theRest; |
| } |
| |
| static class IntPropertyValuesHolder extends PropertyValuesHolder { |
| |
| private IntProperty mIntProperty; |
| |
| Keyframes.IntKeyframes mIntKeyframes; |
| int mIntAnimatedValue; |
| |
| IntPropertyValuesHolder(String propertyName, Keyframes.IntKeyframes keyframes) { |
| super(propertyName); |
| mValueType = int.class; |
| mKeyframes = keyframes; |
| mIntKeyframes = keyframes; |
| } |
| |
| IntPropertyValuesHolder(Property property, Keyframes.IntKeyframes keyframes) { |
| super(property); |
| mValueType = int.class; |
| mKeyframes = keyframes; |
| mIntKeyframes = keyframes; |
| if (property instanceof IntProperty) { |
| mIntProperty = (IntProperty) mProperty; |
| } |
| } |
| |
| IntPropertyValuesHolder(String propertyName, int... values) { |
| super(propertyName); |
| setIntValues(values); |
| } |
| |
| IntPropertyValuesHolder(Property property, int... values) { |
| super(property); |
| setIntValues(values); |
| if (property instanceof IntProperty) { |
| mIntProperty = (IntProperty) mProperty; |
| } |
| } |
| |
| @Override |
| public void setProperty(@NonNull Property property) { |
| if (property instanceof IntProperty) { |
| mIntProperty = (IntProperty) property; |
| } else { |
| super.setProperty(property); |
| } |
| } |
| |
| @Override |
| public void setIntValues(@NonNull int... values) { |
| super.setIntValues(values); |
| mIntKeyframes = (Keyframes.IntKeyframes) mKeyframes; |
| } |
| |
| @Override |
| void calculateValue(float fraction) { |
| mIntAnimatedValue = mIntKeyframes.getIntValue(fraction); |
| } |
| |
| @Override |
| Object getAnimatedValue() { |
| return mIntAnimatedValue; |
| } |
| |
| @NonNull |
| @Override |
| public IntPropertyValuesHolder clone() { |
| IntPropertyValuesHolder newPVH = (IntPropertyValuesHolder) super.clone(); |
| newPVH.mIntKeyframes = (Keyframes.IntKeyframes) newPVH.mKeyframes; |
| return newPVH; |
| } |
| |
| /** |
| * Internal function to set the value on the target object, using the setter set up |
| * earlier on this PropertyValuesHolder object. This function is called by ObjectAnimator |
| * to handle turning the value calculated by ValueAnimator into a value set on the object |
| * according to the name of the property. |
| * @param target The target object on which the value is set |
| */ |
| @Override |
| void setAnimatedValue(Object target) { |
| if (mIntProperty != null) { |
| mIntProperty.setValue(target, mIntAnimatedValue); |
| return; |
| } |
| if (mProperty != null) { |
| mProperty.set(target, mIntAnimatedValue); |
| return; |
| } |
| |
| try { |
| mTmpValueArray[0] = mIntAnimatedValue; |
| mSetter.invoke(target, mTmpValueArray); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| static class FloatPropertyValuesHolder extends PropertyValuesHolder { |
| |
| private FloatProperty mFloatProperty; |
| |
| Keyframes.FloatKeyframes mFloatKeyframes; |
| float mFloatAnimatedValue; |
| |
| FloatPropertyValuesHolder(String propertyName, Keyframes.FloatKeyframes keyframes) { |
| super(propertyName); |
| mValueType = float.class; |
| mKeyframes = keyframes; |
| mFloatKeyframes = keyframes; |
| } |
| |
| FloatPropertyValuesHolder(Property property, Keyframes.FloatKeyframes keyframes) { |
| super(property); |
| mValueType = float.class; |
| mKeyframes = keyframes; |
| mFloatKeyframes = keyframes; |
| if (property instanceof FloatProperty) { |
| mFloatProperty = (FloatProperty) mProperty; |
| } |
| } |
| |
| FloatPropertyValuesHolder(String propertyName, float... values) { |
| super(propertyName); |
| setFloatValues(values); |
| } |
| |
| FloatPropertyValuesHolder(Property property, float... values) { |
| super(property); |
| setFloatValues(values); |
| if (property instanceof FloatProperty) { |
| mFloatProperty = (FloatProperty) mProperty; |
| } |
| } |
| |
| @Override |
| public void setProperty(@NonNull Property property) { |
| if (property instanceof FloatProperty) { |
| mFloatProperty = (FloatProperty) property; |
| } else { |
| super.setProperty(property); |
| } |
| } |
| |
| @Override |
| public void setFloatValues(@NonNull float... values) { |
| super.setFloatValues(values); |
| mFloatKeyframes = (Keyframes.FloatKeyframes) mKeyframes; |
| } |
| |
| @Override |
| void calculateValue(float fraction) { |
| mFloatAnimatedValue = mFloatKeyframes.getFloatValue(fraction); |
| } |
| |
| @Override |
| Object getAnimatedValue() { |
| return mFloatAnimatedValue; |
| } |
| |
| @NonNull |
| @Override |
| public FloatPropertyValuesHolder clone() { |
| FloatPropertyValuesHolder newPVH = (FloatPropertyValuesHolder) super.clone(); |
| newPVH.mFloatKeyframes = (Keyframes.FloatKeyframes) newPVH.mKeyframes; |
| return newPVH; |
| } |
| |
| /** |
| * Internal function to set the value on the target object, using the setter set up |
| * earlier on this PropertyValuesHolder object. This function is called by ObjectAnimator |
| * to handle turning the value calculated by ValueAnimator into a value set on the object |
| * according to the name of the property. |
| * @param target The target object on which the value is set |
| */ |
| @Override |
| void setAnimatedValue(Object target) { |
| if (mFloatProperty != null) { |
| mFloatProperty.setValue(target, mFloatAnimatedValue); |
| return; |
| } |
| if (mProperty != null) { |
| mProperty.set(target, mFloatAnimatedValue); |
| return; |
| } |
| if (mSetter != null) { |
| try { |
| mTmpValueArray[0] = mFloatAnimatedValue; |
| mSetter.invoke(target, mTmpValueArray); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| } |
| |
| static class MultiFloatValuesHolder extends PropertyValuesHolder { |
| |
| MultiFloatValuesHolder(String propertyName, TypeConverter converter, |
| TypeEvaluator evaluator, Object... values) { |
| super(propertyName); |
| setConverter(converter); |
| setObjectValues(values); |
| setEvaluator(evaluator); |
| } |
| |
| MultiFloatValuesHolder(String propertyName, TypeConverter converter, |
| TypeEvaluator evaluator, Keyframes keyframes) { |
| super(propertyName); |
| setConverter(converter); |
| mKeyframes = keyframes; |
| setEvaluator(evaluator); |
| } |
| |
| /** |
| * Internal function to set the value on the target object, using the setter set up |
| * earlier on this PropertyValuesHolder object. This function is called by ObjectAnimator |
| * to handle turning the value calculated by ValueAnimator into a value set on the object |
| * according to the name of the property. |
| * @param target The target object on which the value is set |
| */ |
| @Override |
| void setAnimatedValue(Object target) { |
| float[] values = (float[]) getAnimatedValue(); |
| Object[] boxedValues = new Float[values.length]; |
| for (int i = 0; i < boxedValues.length; i++) { |
| boxedValues[i] = values[i]; |
| } |
| if (mSetter != null) { |
| try { |
| mSetter.invoke(target, boxedValues); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Internal function (called from ObjectAnimator) to set up the setter and getter |
| * prior to running the animation. No getter can be used for multiple parameters. |
| * |
| * @param target The object on which the setter exists. |
| */ |
| @Override |
| void setupSetterAndGetter(Object target) { |
| setupSetter(target.getClass()); |
| } |
| |
| @Override |
| @SuppressWarnings("CatchAndPrintStackTrace") |
| void setupSetter(Class<?> targetClass) { |
| synchronized (sSetterPropertyMap) { |
| // Have to lock property map prior to reading it, to guard against |
| // another thread putting something in there after we've checked it |
| // but before we've added an entry to it |
| HashMap<String, Method> propertyMap = sSetterPropertyMap.get(targetClass); |
| boolean wasInMap = false; |
| if (propertyMap != null) { |
| wasInMap = propertyMap.containsKey(mPropertyName); |
| if (wasInMap) { |
| mSetter = propertyMap.get(mPropertyName); |
| } |
| } |
| if (!wasInMap) { |
| String methodName = getMethodName("set", mPropertyName); |
| calculateValue(0f); |
| float[] values = (float[]) getAnimatedValue(); |
| int numParams = values.length; |
| Class<?>[] parameterTypes = new Class<?>[values.length]; |
| for (int i = 0; i < numParams; i++) { |
| parameterTypes[i] = float.class; |
| } |
| try { |
| mSetter = targetClass.getMethod(methodName, parameterTypes); |
| if (mSetter == null) { |
| for (int i = 0; i < numParams; i++) { |
| parameterTypes[i] = Float.class; |
| } |
| mSetter = targetClass.getMethod(methodName, parameterTypes); |
| } |
| } catch (NoSuchMethodException e) { |
| e.printStackTrace(); |
| } |
| |
| if (propertyMap == null) { |
| propertyMap = new HashMap<>(); |
| sSetterPropertyMap.put(targetClass, propertyMap); |
| } |
| propertyMap.put(mPropertyName, mSetter); |
| } |
| } |
| } |
| } |
| |
| static class MultiIntValuesHolder extends PropertyValuesHolder { |
| |
| MultiIntValuesHolder(String propertyName, TypeConverter converter, |
| TypeEvaluator evaluator, Object... values) { |
| super(propertyName); |
| setConverter(converter); |
| setObjectValues(values); |
| setEvaluator(evaluator); |
| } |
| |
| MultiIntValuesHolder(String propertyName, TypeConverter converter, |
| TypeEvaluator evaluator, Keyframes keyframes) { |
| super(propertyName); |
| setConverter(converter); |
| mKeyframes = keyframes; |
| setEvaluator(evaluator); |
| } |
| |
| /** |
| * Internal function to set the value on the target object, using the setter set up |
| * earlier on this PropertyValuesHolder object. This function is called by ObjectAnimator |
| * to handle turning the value calculated by ValueAnimator into a value set on the object |
| * according to the name of the property. |
| * @param target The target object on which the value is set |
| */ |
| @Override |
| void setAnimatedValue(Object target) { |
| int[] values = (int[]) getAnimatedValue(); |
| Object[] boxedValues = new Integer[values.length]; |
| for (int i = 0; i < boxedValues.length; i++) { |
| boxedValues[i] = values[i]; |
| } |
| if (mSetter != null) { |
| try { |
| mSetter.invoke(target, boxedValues); |
| } catch (InvocationTargetException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } catch (IllegalAccessException e) { |
| Log.e("PropertyValuesHolder", e.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Internal function (called from ObjectAnimator) to set up the setter and getter |
| * prior to running the animation. No getter can be used for multiple parameters. |
| * |
| * @param target The object on which the setter exists. |
| */ |
| @Override |
| void setupSetterAndGetter(Object target) { |
| setupSetter(target.getClass()); |
| } |
| |
| @Override |
| @SuppressWarnings("CatchAndPrintStackTrace") |
| void setupSetter(Class<?> targetClass) { |
| synchronized (sSetterPropertyMap) { |
| // Have to lock property map prior to reading it, to guard against |
| // another thread putting something in there after we've checked it |
| // but before we've added an entry to it |
| HashMap<String, Method> propertyMap = sSetterPropertyMap.get(targetClass); |
| boolean wasInMap = false; |
| if (propertyMap != null) { |
| wasInMap = propertyMap.containsKey(mPropertyName); |
| if (wasInMap) { |
| mSetter = propertyMap.get(mPropertyName); |
| } |
| } |
| if (!wasInMap) { |
| String methodName = getMethodName("set", mPropertyName); |
| calculateValue(0f); |
| int[] values = (int[]) getAnimatedValue(); |
| int numParams = values.length; |
| Class<?>[] parameterTypes = new Class<?>[values.length]; |
| for (int i = 0; i < numParams; i++) { |
| parameterTypes[i] = int.class; |
| } |
| try { |
| mSetter = targetClass.getMethod(methodName, parameterTypes); |
| if (mSetter == null) { |
| for (int i = 0; i < numParams; i++) { |
| parameterTypes[i] = Integer.class; |
| } |
| mSetter = targetClass.getMethod(methodName, parameterTypes); |
| } |
| } catch (NoSuchMethodException e) { |
| e.printStackTrace(); |
| } |
| |
| if (propertyMap == null) { |
| propertyMap = new HashMap<>(); |
| sSetterPropertyMap.put(targetClass, propertyMap); |
| } |
| propertyMap.put(mPropertyName, mSetter); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Convert from PointF to float[] for multi-float setters along a Path. |
| */ |
| private static class PointFToFloatArray extends TypeConverter<PointF, float[]> { |
| private float[] mCoordinates = new float[2]; |
| |
| PointFToFloatArray() { |
| super(PointF.class, float[].class); |
| } |
| |
| @NonNull |
| @Override |
| public float[] convert(@NonNull PointF value) { |
| mCoordinates[0] = value.x; |
| mCoordinates[1] = value.y; |
| return mCoordinates; |
| } |
| }; |
| |
| /** |
| * Convert from PointF to int[] for multi-int setters along a Path. |
| */ |
| private static class PointFToIntArray extends TypeConverter<PointF, int[]> { |
| private int[] mCoordinates = new int[2]; |
| |
| PointFToIntArray() { |
| super(PointF.class, int[].class); |
| } |
| |
| @NonNull |
| @Override |
| public int[] convert(@NonNull PointF value) { |
| mCoordinates[0] = Math.round(value.x); |
| mCoordinates[1] = Math.round(value.y); |
| return mCoordinates; |
| } |
| }; |
| } |
