/*
 * Copyright 2006-2010, Stephan Aßmus <superstippi@gmx.de>.
 * Copyright 2006-2009, 2023, Haiku.
 * All rights reserved. Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Stephan Aßmus <superstippi@gmx.de>
 *              Zardshard
 */


#include "PerspectiveCommand.h"

#include <Catalog.h>
#include <Locale.h>

#include "PerspectiveTransformer.h"


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "Icon-O-Matic-PerspectiveCommand"


PerspectiveCommand::PerspectiveCommand(PerspectiveBox* box,
        PerspectiveTransformer* transformer, BPoint leftTop, BPoint rightTop
        , BPoint leftBottom, BPoint rightBottom)
        : fTransformBox(box),
          fTransformer(transformer),
          fOldLeftTop(leftTop),
          fOldRightTop(rightTop),
          fOldLeftBottom(leftBottom),
          fOldRightBottom(rightBottom),
          fNewLeftTop(leftTop),
          fNewRightTop(rightTop),
          fNewLeftBottom(leftBottom),
          fNewRightBottom(rightBottom)
{
        if (fTransformer == NULL)
                return;

        fTransformer->AcquireReference();

        if (fTransformBox != NULL)
                fTransformBox->AddListener(this);
}


PerspectiveCommand::~PerspectiveCommand()
{
        if (fTransformer != NULL)
                fTransformer->ReleaseReference();

        if (fTransformBox != NULL)
                fTransformBox->RemoveListener(this);
}


// pragma mark -


status_t
PerspectiveCommand::InitCheck()
{
        if (fTransformer != NULL
                && (fOldLeftTop != fNewLeftTop
                        || fOldRightTop != fNewRightTop
                        || fOldLeftBottom != fNewLeftBottom
                        || fOldRightBottom != fNewRightBottom))
                return B_OK;

        return B_NO_INIT;
}


status_t
PerspectiveCommand::Perform()
{
        // objects are already transformed
        return B_OK;
}


status_t
PerspectiveCommand::Undo()
{
        if (fTransformBox != NULL) {
                fTransformBox->TransformTo(fOldLeftTop, fOldRightTop, fOldLeftBottom, fOldRightBottom);
                return B_OK;
        }

        fTransformer->TransformTo(fOldLeftTop, fOldRightTop, fOldLeftBottom, fOldRightBottom);
        return B_OK;
}


status_t
PerspectiveCommand::Redo()
{
        if (fTransformBox != NULL) {
                fTransformBox->TransformTo(fNewLeftTop, fNewRightTop, fNewLeftBottom, fNewRightBottom);
                return B_OK;
        }

        fTransformer->TransformTo(fNewLeftTop, fNewRightTop, fNewLeftBottom, fNewRightBottom);
        return B_OK;
}


void
PerspectiveCommand::GetName(BString& name)
{
        name << B_TRANSLATE("Change perspective");
}


// pragma mark -


void
PerspectiveCommand::PerspectiveBoxDeleted(const PerspectiveBox* box)
{
        if (fTransformBox == box) {
                if (fTransformBox != NULL)
                        fTransformBox->RemoveListener(this);
                fTransformBox = NULL;
        }
}


// #pragma mark -


void
PerspectiveCommand::SetNewPerspective(
        BPoint leftTop, BPoint rightTop, BPoint leftBottom, BPoint rightBottom)
{
        fNewLeftTop = leftTop;
        fNewRightTop = rightTop;
        fNewLeftBottom = leftBottom;
        fNewRightBottom = rightBottom;
}