/*
* 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.
*/
import androidx.constraintlayout.core.motion.utils.Utils;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
/**
* Defines non standard Attributes
*
* @suppress
*/
public class CustomAttribute {
private static final String TAG = "TransitionLayout";
private boolean mMethod = false;
String mName;
private AttributeType mType;
private int mIntegerValue;
private float mFloatValue;
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
*
* @return
*/
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;
}
}
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;
}
}
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;
}
}
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
*
* @param CustomAttribute
* @return
*/
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);
}
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;
}
}
public static HashMap<String, CustomAttribute> extractAttributes(
HashMap<String, CustomAttribute> base, Object view) {
HashMap<String, CustomAttribute> ret = new HashMap<>();
Class<? extends Object> viewClass = view.getClass();
for (String name : base.keySet()) {
CustomAttribute CustomAttribute = base.get(name);
try {
Method method = viewClass.getMethod("getMap" + name);
Object val = method.invoke(view);
ret.put(name, new CustomAttribute(CustomAttribute, val));
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
return ret;
}
public static void setAttributes(Object view, HashMap<String, CustomAttribute> map) {
Class<? extends Object> viewClass = view.getClass();
for (String name : map.keySet()) {
CustomAttribute CustomAttribute = map.get(name);
String methodName = name;
if (!CustomAttribute.mMethod) {
methodName = "set" + methodName;
}
try {
Method method;
switch (CustomAttribute.mType) {
case INT_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, CustomAttribute.mIntegerValue);
break;
case FLOAT_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, CustomAttribute.mFloatValue);
break;
case COLOR_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, CustomAttribute.mColorValue);
break;
case STRING_TYPE:
method = viewClass.getMethod(methodName, CharSequence.class);
method.invoke(view, CustomAttribute.mStringValue);
break;
case BOOLEAN_TYPE:
method = viewClass.getMethod(methodName, Boolean.TYPE);
method.invoke(view, CustomAttribute.mBooleanValue);
break;
case DIMENSION_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, CustomAttribute.mFloatValue);
break;
case REFERENCE_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, CustomAttribute.mIntegerValue);
break;
default: break;
}
} catch (NoSuchMethodException e) {
Utils.loge(TAG, e.getMessage());
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
Utils.loge(TAG, viewClass.getName() + " must have a method " + methodName);
} catch (IllegalAccessException e) {
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
e.printStackTrace();
} catch (InvocationTargetException e) {
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
e.printStackTrace();
}
}
}
public void applyCustom(Object view) {
Class<? extends Object> viewClass = view.getClass();
String name = this.mName;
String methodName = name;
if (!mMethod) {
methodName = "set" + methodName;
}
try {
Method method;
switch (this.mType) {
case INT_TYPE:
case REFERENCE_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, this.mIntegerValue);
break;
case FLOAT_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, this.mFloatValue);
break;
case COLOR_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, this.mColorValue);
break;
case STRING_TYPE:
method = viewClass.getMethod(methodName, CharSequence.class);
method.invoke(view, this.mStringValue);
break;
case BOOLEAN_TYPE:
method = viewClass.getMethod(methodName, Boolean.TYPE);
method.invoke(view, this.mBooleanValue);
break;
case DIMENSION_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, this.mFloatValue);
break;
default: break;
}
} catch (NoSuchMethodException e) {
Utils.loge(TAG, e.getMessage());
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
Utils.loge(TAG, viewClass.getName() + " must have a method " + methodName);
} catch (IllegalAccessException e) {
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
e.printStackTrace();
} catch (InvocationTargetException e) {
Utils.loge(TAG, " Custom Attribute \"" + name + "\" not found on " + viewClass.getName());
e.printStackTrace();
}
}
private static int clamp(int c) {
int N = 255;
c &= ~(c >> 31);
c -= N;
c &= (c >> 31);
c += N;
return c;
}
public void setInterpolatedValue(Object view, float[] value) {
Class<? extends Object> viewClass = view.getClass();
String methodName = "set" + mName;
try {
Method method;
switch (mType) {
case INT_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
method.invoke(view, (int) value[0]);
break;
case FLOAT_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, value[0]);
break;
case COLOR_TYPE:
method = viewClass.getMethod(methodName, Integer.TYPE);
int r = clamp((int) ((float) Math.pow(value[0], 1.0 / 2.2) * 255.0f));
int g = clamp((int) ((float) Math.pow(value[1], 1.0 / 2.2) * 255.0f));
int b = clamp((int) ((float) Math.pow(value[2], 1.0 / 2.2) * 255.0f));
int a = clamp((int) (value[3] * 255.0f));
int color = a << 24 | (r << 16) | (g << 8) | b;
method.invoke(view, color);
break;
case STRING_TYPE:
throw new RuntimeException("unable to interpolate strings " + mName);
case BOOLEAN_TYPE:
method = viewClass.getMethod(methodName, Boolean.TYPE);
method.invoke(view, value[0] > 0.5f);
break;
case DIMENSION_TYPE:
method = viewClass.getMethod(methodName, Float.TYPE);
method.invoke(view, value[0]);
break;
default: break;
}
} catch (NoSuchMethodException e) {
Utils.loge(TAG, "no method " + methodName + " on View \"" + view.getClass().getName() + "\"");
e.printStackTrace();
} catch (IllegalAccessException e) {
Utils.loge(TAG, "cannot access method " + methodName + " on View \"" + view.getClass().getName() + "\"");
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}