/**
 * PIC_RW - Qt PIC Support
 * Copyright (C) 2007 Ruben Lopez <r.lopez@bren.es>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * ----------------------------------------------------------------------------
 */

#include "pic.h"
#include "pic_rw.h"

#include <QVariant>
#include <QImage>
#include <iostream>

bool SoftimagePICHandler::canRead() const
{
    if (!SoftimagePICHandler::canRead(device())) {
        return false;
    }
    setFormat("pic");
    return true;
}

bool SoftimagePICHandler::read(QImage *image)
{
    pic_read(device(), image);
    return true;
}

bool SoftimagePICHandler::write(const QImage &image)
{
    pic_write(device(), &image);
    return true;
}

bool SoftimagePICHandler::canRead(QIODevice *device)
{
    PICHeader hdr;
    if (picReadHeader(device, &hdr, true)) {
        if (strncmp(hdr.id, "PICT", 4) == 0) {
            return true;
        }
    }
    return false;
}

QVariant SoftimagePICHandler::option(ImageOption option) const
{
    if (option == Size) {
        PICHeader hdr;
        if (picReadHeader(device(), &hdr, true)) {
            return QSize(hdr.width, hdr.height);
        } else {
            return QSize(-1, -1);
        }
    }
    return QVariant();
}

bool SoftimagePICHandler::supportsOption(ImageOption option) const
{
    return (option == Size);
}

QImageIOPlugin::Capabilities SoftimagePICPlugin::capabilities(QIODevice *device, const QByteArray &format) const
{
    if (format == "pic") {
        return Capabilities(CanRead | CanWrite);
    }
    if (!format.isEmpty()) {
        return 0;
    }
    if (!device->isOpen()) {
        return 0;
    }

    Capabilities cap;
    if (device->isReadable() && SoftimagePICHandler::canRead(device)) {
        cap |= CanRead;
    }
    if (device->isWritable()) {
        cap |= CanWrite;
    }
    return cap;
}

QImageIOHandler *SoftimagePICPlugin::create(QIODevice *device, const QByteArray &format) const
{
    QImageIOHandler *handler = new SoftimagePICHandler();
    handler->setDevice(device);
    handler->setFormat(format);
    return handler;
}