/*
 *  This file is part of RawTherapee.
 *
 *  Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
 *
 *  RawTherapee is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  RawTherapee is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with RawTherapee.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "imagedimensions.h"
#include "rtengine.h"

PreviewProps::PreviewProps(int _x, int _y, int _width, int _height, int _skip)
    : x(_x), y(_y), width(_width), height(_height), skip(_skip)
{
}

int PreviewProps::getX() const { return x; }

int PreviewProps::getY() const { return y; }

int PreviewProps::getWidth() const { return width; }

int PreviewProps::getHeight() const { return height; }

int PreviewProps::getSkip() const { return skip; }

void PreviewProps::set(int x, int y, int w, int h, int skip)
{
    this->x = x;
    this->y = y;
    this->width = w;
    this->height = h;
    this->skip = skip;
}

ImageDimensions::ImageDimensions(): width(-1), height(-1) {}

void ImageDimensions::transform(const PreviewProps &pp, int tran, int &sx1,
                                int &sy1, int &sx2, int &sy2) const
{
    int sw = width;
    int sh = height;

    if ((tran & TR_ROT) == TR_R90 || (tran & TR_ROT) == TR_R270) {
        std::swap(sw, sh);
    }

    int ppx = pp.getX();
    int ppy = pp.getY();

    if (tran & TR_HFLIP) {
        ppx = sw - pp.getX() - pp.getWidth();
    }

    if (tran & TR_VFLIP) {
        ppy = sh - pp.getY() - pp.getHeight();
    }

    sx1 = ppx;
    sy1 = ppy;
    sx2 = ppx + pp.getWidth();
    sy2 = ppy + pp.getHeight();

    if ((tran & TR_ROT) == TR_R180) {
        sx1 = width - ppx - pp.getWidth();
        sy1 = height - ppy - pp.getHeight();
        sx2 = sx1 + pp.getWidth();
        sy2 = sy1 + pp.getHeight();
    } else if ((tran & TR_ROT) == TR_R90) {
        sx1 = ppy;
        sy1 = height - ppx - pp.getWidth();
        sx2 = sx1 + pp.getHeight();
        sy2 = sy1 + pp.getWidth();
    } else if ((tran & TR_ROT) == TR_R270) {
        sx1 = width - ppy - pp.getHeight();
        sy1 = ppx;
        sx2 = sx1 + pp.getHeight();
        sy2 = sy1 + pp.getWidth();
    }

    if (sx1 < 0) {
        sx1 = 0;
    }

    if (sy1 < 0) {
        sy1 = 0;
    }
}
