Example usage for android.support.v4.graphics PathParser canMorph

Introduction

In this page you can find the example usage for android.support.v4.graphics PathParser canMorph.

Prototype

public static boolean canMorph(PathDataNode[] nodesFrom, PathDataNode[] nodesTo) 

Source Link

Usage

From source file:android.support.graphics.drawable.AnimatorInflaterCompat.java

private static PropertyValuesHolder getPVH(TypedArray styledAttributes, int valueType, int valueFromId,
        int valueToId, String propertyName) {

    TypedValue tvFrom = styledAttributes.peekValue(valueFromId);
    boolean hasFrom = (tvFrom != null);
    int fromType = hasFrom ? tvFrom.type : 0;
    TypedValue tvTo = styledAttributes.peekValue(valueToId);
    boolean hasTo = (tvTo != null);
    int toType = hasTo ? tvTo.type : 0;

    if (valueType == VALUE_TYPE_UNDEFINED) {
        // Check whether it's color type. If not, fall back to default type (i.e. float type)
        if ((hasFrom && isColorType(fromType)) || (hasTo && isColorType(toType))) {
            valueType = VALUE_TYPE_COLOR;
        } else {/*from  w ww .j  a v  a  2s .  c o m*/
            valueType = VALUE_TYPE_FLOAT;
        }
    }

    boolean getFloats = (valueType == VALUE_TYPE_FLOAT);

    PropertyValuesHolder returnValue = null;

    if (valueType == VALUE_TYPE_PATH) {
        String fromString = styledAttributes.getString(valueFromId);
        String toString = styledAttributes.getString(valueToId);

        PathParser.PathDataNode[] nodesFrom = PathParser.createNodesFromPathData(fromString);
        PathParser.PathDataNode[] nodesTo = PathParser.createNodesFromPathData(toString);
        if (nodesFrom != null || nodesTo != null) {
            if (nodesFrom != null) {
                TypeEvaluator evaluator = new PathDataEvaluator();
                if (nodesTo != null) {
                    if (!PathParser.canMorph(nodesFrom, nodesTo)) {
                        throw new InflateException(" Can't morph from " + fromString + " to " + toString);
                    }
                    returnValue = PropertyValuesHolder.ofObject(propertyName, evaluator, nodesFrom, nodesTo);
                } else {
                    returnValue = PropertyValuesHolder.ofObject(propertyName, evaluator, (Object) nodesFrom);
                }
            } else if (nodesTo != null) {
                TypeEvaluator evaluator = new PathDataEvaluator();
                returnValue = PropertyValuesHolder.ofObject(propertyName, evaluator, (Object) nodesTo);
            }
        }
    } else {
        TypeEvaluator evaluator = null;
        // Integer and float value types are handled here.
        if (valueType == VALUE_TYPE_COLOR) {
            // special case for colors: ignore valueType and get ints
            evaluator = ArgbEvaluator.getInstance();
        }
        if (getFloats) {
            float valueFrom;
            float valueTo;
            if (hasFrom) {
                if (fromType == TypedValue.TYPE_DIMENSION) {
                    valueFrom = styledAttributes.getDimension(valueFromId, 0f);
                } else {
                    valueFrom = styledAttributes.getFloat(valueFromId, 0f);
                }
                if (hasTo) {
                    if (toType == TypedValue.TYPE_DIMENSION) {
                        valueTo = styledAttributes.getDimension(valueToId, 0f);
                    } else {
                        valueTo = styledAttributes.getFloat(valueToId, 0f);
                    }
                    returnValue = PropertyValuesHolder.ofFloat(propertyName, valueFrom, valueTo);
                } else {
                    returnValue = PropertyValuesHolder.ofFloat(propertyName, valueFrom);
                }
            } else {
                if (toType == TypedValue.TYPE_DIMENSION) {
                    valueTo = styledAttributes.getDimension(valueToId, 0f);
                } else {
                    valueTo = styledAttributes.getFloat(valueToId, 0f);
                }
                returnValue = PropertyValuesHolder.ofFloat(propertyName, valueTo);
            }
        } else {
            int valueFrom;
            int valueTo;
            if (hasFrom) {
                if (fromType == TypedValue.TYPE_DIMENSION) {
                    valueFrom = (int) styledAttributes.getDimension(valueFromId, 0f);
                } else if (isColorType(fromType)) {
                    valueFrom = styledAttributes.getColor(valueFromId, 0);
                } else {
                    valueFrom = styledAttributes.getInt(valueFromId, 0);
                }
                if (hasTo) {
                    if (toType == TypedValue.TYPE_DIMENSION) {
                        valueTo = (int) styledAttributes.getDimension(valueToId, 0f);
                    } else if (isColorType(toType)) {
                        valueTo = styledAttributes.getColor(valueToId, 0);
                    } else {
                        valueTo = styledAttributes.getInt(valueToId, 0);
                    }
                    returnValue = PropertyValuesHolder.ofInt(propertyName, valueFrom, valueTo);
                } else {
                    returnValue = PropertyValuesHolder.ofInt(propertyName, valueFrom);
                }
            } else {
                if (hasTo) {
                    if (toType == TypedValue.TYPE_DIMENSION) {
                        valueTo = (int) styledAttributes.getDimension(valueToId, 0f);
                    } else if (isColorType(toType)) {
                        valueTo = styledAttributes.getColor(valueToId, 0);
                    } else {
                        valueTo = styledAttributes.getInt(valueToId, 0);
                    }
                    returnValue = PropertyValuesHolder.ofInt(propertyName, valueTo);
                }
            }
        }
        if (returnValue != null && evaluator != null) {
            returnValue.setEvaluator(evaluator);
        }
    }

    return returnValue;
}

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