content: /*
   * Copyright (C) 2021 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.constraintlayout.core.motion;
  /*
   * Copyright (C) 2017 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.
   */
  
  
  /**
   * Defines non standard Attributes
   *
   *
   */
  public class CustomAttribute {
      private static final String TAG = "TransitionLayout";
      @SuppressWarnings("unused") private boolean mMethod = false;
      String mName;
      private AttributeType mType;
      private int mIntegerValue;
      private float mFloatValue;
      @SuppressWarnings("unused") private String mStringValue;
      boolean mBooleanValue;
      private int mColorValue;
  
      public enum AttributeType {
          INT_TYPE,
          FLOAT_TYPE,
          COLOR_TYPE,
          COLOR_DRAWABLE_TYPE,
          STRING_TYPE,
          BOOLEAN_TYPE,
          DIMENSION_TYPE,
          REFERENCE_TYPE
      }
  
      public AttributeType getType() {
          return mType;
      }
  
      /**
       * Continuous types are interpolated they are fired only at
       */
      public boolean isContinuous() {
          switch (mType) {
              case REFERENCE_TYPE:
              case BOOLEAN_TYPE:
              case STRING_TYPE:
                  return false;
              default:
                  return true;
          }
      }
  
      public void setFloatValue(float value) {
          mFloatValue = value;
      }
  
      public void setColorValue(int value) {
          mColorValue = value;
      }
  
      public void setIntValue(int value) {
          mIntegerValue = value;
      }
  
      public void setStringValue(String value) {
          mStringValue = value;
      }
  
      /**
       * The number of interpolation values that need to be interpolated
       * Typically 1 but 3 for colors.
       *
       * @return Typically 1 but 3 for colors.
       */
      public int numberOfInterpolatedValues() {
          switch (mType) {
              case COLOR_TYPE:
              case COLOR_DRAWABLE_TYPE:
                  return 4;
              default:
                  return 1;
          }
      }
  
      /**
       * Transforms value to a float for the purpose of interpolation
       *
       * @return interpolation value
       */
      public float getValueToInterpolate() {
          switch (mType) {
              case INT_TYPE:
                  return mIntegerValue;
              case FLOAT_TYPE:
                  return mFloatValue;
              case COLOR_TYPE:
              case COLOR_DRAWABLE_TYPE:
                  throw new RuntimeException("Color does not have a single color to interpolate");
              case STRING_TYPE:
                  throw new RuntimeException("Cannot interpolate String");
              case BOOLEAN_TYPE:
                  return mBooleanValue ? 1 : 0;
              case DIMENSION_TYPE:
                  return mFloatValue;
              default:
                  return Float.NaN;
          }
      }
  
      // @TODO: add description
      public void getValuesToInterpolate(float[] ret) {
          switch (mType) {
              case INT_TYPE:
                  ret[0] = mIntegerValue;
                  break;
              case FLOAT_TYPE:
                  ret[0] = mFloatValue;
                  break;
              case COLOR_DRAWABLE_TYPE:
              case COLOR_TYPE:
                  int a = 0xFF & (mColorValue >> 24);
                  int r = 0xFF & (mColorValue >> 16);
                  int g = 0xFF & (mColorValue >> 8);
                  int b = 0xFF & mColorValue;
                  float f_r = (float) Math.pow(r / 255.0f, 2.2);
                  float f_g = (float) Math.pow(g / 255.0f, 2.2);
                  float f_b = (float) Math.pow(b / 255.0f, 2.2);
                  ret[0] = f_r;
                  ret[1] = f_g;
                  ret[2] = f_b;
                  ret[3] = a / 255f;
                  break;
              case STRING_TYPE:
                  throw new RuntimeException("Color does not have a single color to interpolate");
              case BOOLEAN_TYPE:
                  ret[0] = mBooleanValue ? 1 : 0;
                  break;
              case DIMENSION_TYPE:
                  ret[0] = mFloatValue;
                  break;
              default:
                  break;
          }
      }
  
      // @TODO: add description
      public void setValue(float[] value) {
          switch (mType) {
              case REFERENCE_TYPE:
              case INT_TYPE:
                  mIntegerValue = (int) value[0];
                  break;
              case FLOAT_TYPE:
                  mFloatValue = value[0];
                  break;
              case COLOR_DRAWABLE_TYPE:
              case COLOR_TYPE:
                  mColorValue = hsvToRgb(value[0], value[1], value[2]);
                  mColorValue = (mColorValue & 0xFFFFFF) | (clamp((int) (0xFF * value[3])) << 24);
                  break;
              case STRING_TYPE:
                  throw new RuntimeException("Color does not have a single color to interpolate");
              case BOOLEAN_TYPE:
                  mBooleanValue = value[0] > 0.5;
                  break;
              case DIMENSION_TYPE:
                  mFloatValue = value[0];
                  break;
              default:
                  break;
          }
      }
  
      // @TODO: add description
      public static int hsvToRgb(float hue, float saturation, float value) {
          int h = (int) (hue * 6);
          float f = hue * 6 - h;
          int p = (int) (0.5f + 255 * value * (1 - saturation));
          int q = (int) (0.5f + 255 * value * (1 - f * saturation));
          int t = (int) (0.5f + 255 * value * (1 - (1 - f) * saturation));
          int v = (int) (0.5f + 255 * value);
          switch (h) {
              case 0:
                  return 0XFF000000 | (v << 16) + (t << 8) + p;
              case 1:
                  return 0XFF000000 | (q << 16) + (v << 8) + p;
              case 2:
                  return 0XFF000000 | (p << 16) + (v << 8) + t;
              case 3:
                  return 0XFF000000 | (p << 16) + (q << 8) + v;
              case 4:
                  return 0XFF000000 | (t << 16) + (p << 8) + v;
              case 5:
                  return 0XFF000000 | (v << 16) + (p << 8) + q;
              default:
                  return 0;
          }
      }
  
      /**
       * test if the two attributes are different
       */
      public boolean diff(CustomAttribute customAttribute) {
          if (customAttribute == null || mType != customAttribute.mType) {
              return false;
          }
          switch (mType) {
              case INT_TYPE:
              case REFERENCE_TYPE:
                  return mIntegerValue == customAttribute.mIntegerValue;
              case FLOAT_TYPE:
                  return mFloatValue == customAttribute.mFloatValue;
              case COLOR_TYPE:
              case COLOR_DRAWABLE_TYPE:
                  return mColorValue == customAttribute.mColorValue;
              case STRING_TYPE:
                  return mIntegerValue == customAttribute.mIntegerValue;
              case BOOLEAN_TYPE:
                  return mBooleanValue == customAttribute.mBooleanValue;
              case DIMENSION_TYPE:
                  return mFloatValue == customAttribute.mFloatValue;
              default:
                  return false;
          }
      }
  
      public CustomAttribute(String name, AttributeType attributeType) {
          mName = name;
          mType = attributeType;
      }
  
      public CustomAttribute(String name, AttributeType attributeType, Object value, boolean method) {
          mName = name;
          mType = attributeType;
          mMethod = method;
          setValue(value);
      }
  
      public CustomAttribute(CustomAttribute source, Object value) {
          mName = source.mName;
          mType = source.mType;
          setValue(value);
  
      }
  
      // @TODO: add description
      public void setValue(Object value) {
          switch (mType) {
              case REFERENCE_TYPE:
              case INT_TYPE:
                  mIntegerValue = (Integer) value;
                  break;
              case FLOAT_TYPE:
                  mFloatValue = (Float) value;
                  break;
              case COLOR_TYPE:
              case COLOR_DRAWABLE_TYPE:
                  mColorValue = (Integer) value;
                  break;
              case STRING_TYPE:
                  mStringValue = (String) value;
                  break;
              case BOOLEAN_TYPE:
                  mBooleanValue = (Boolean) value;
                  break;
              case DIMENSION_TYPE:
                  mFloatValue = (Float) value;
                  break;
              default:
                  break;
          }
      }
  
      private static int clamp(int c) {
          int n = 255;
          c &= ~(c >> 31);
          c -= n;
          c &= (c >> 31);
          c += n;
          return c;
      }
  
  }
  