/*
 * Copyright 2023, Haiku.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Zardshard
 */


#include "CompoundStyleTransformer.h"

#include <string.h>


_USING_ICON_NAMESPACE


CompoundStyleTransformer::CompoundStyleTransformer(
                StyleTransformer** transformers, int32 count)
        :
        fTransformers(transformers),
        fCount(count)
{
}


CompoundStyleTransformer::~CompoundStyleTransformer()
{
        for (int i = 0; i < fCount; i++)
                delete fTransformers[i];
        delete[] fTransformers;
}


void
CompoundStyleTransformer::transform(double* x, double* y) const
{
        for (int i = 0; i < fCount; i++) {
                if (fTransformers[i] != NULL)
                        fTransformers[i]->transform(x, y);
        }
}


void
CompoundStyleTransformer::Invert()
{
        // reverse order of pipeline
        StyleTransformer* oldOrder[fCount];
        memcpy(oldOrder, fTransformers, fCount * sizeof(StyleTransformer*));
        for (int i = 0; i < fCount; i++) {
                fTransformers[fCount-i-1] = oldOrder[i];
        }

        // invert individual transformations
        for (int i = 0; i < fCount; i++) {
                if (fTransformers[i] != NULL)
                        fTransformers[i]->Invert();
        }
}


bool
CompoundStyleTransformer::IsLinear()
{
        bool linear = true;
        for (int i = 0; i < fCount; i++) {
                if (fTransformers[i] != NULL)
                        linear &= fTransformers[i]->IsLinear();
        }
        return linear;
}