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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
namespace drawinglayer::primitive2d
{
/** CropPrimitive2D class
Caution: Due to old constraints (old core definitions) the
crop distances describe how the uncropped content is defined
relative to the current object size. This means that maTransformation
describes the current object size (the part of the object visible
with the crop applied). To get the original size and orientation
of the uncropped content it is necessary to calc back from the
current situation (maTransformation) using the crop values
to get to the uncropped original content.
Thus a transformation has to be calculated which will be applied
to the already existing content to get it to the uncropped state
and then this is masked with the current state (mask polygon
created from unit polygon and maTransformation).
At least in this primitive the units of the crop values are
already in the local coordinate system; in the core these distances
are defined relative to the object content size (PrefMapMode
and PrefSize of the content)...
Of course this is a primitive, so feel free to just ignore all that
stuff and use the automatically generated decomposition. Sigh.
*/
class CropPrimitive2D final : public GroupPrimitive2D
{
private:
// the transformation already applied to the child geometry
basegfx::B2DHomMatrix maTransformation;
// the crop offsets relative to the range of the unrotated content
double mfCropLeft;
double mfCropTop;
double mfCropRight;
double mfCropBottom;
public:
/// constructor
CropPrimitive2D(
Primitive2DContainer&& aChildren,
const basegfx::B2DHomMatrix& rTransformation,
double fCropLeft,
double fCropTop,
double fCropRight,
double fCropBottom);
/// data read access
const basegfx::B2DHomMatrix& getTransformation() const { return maTransformation; }
double getCropLeft() const { return mfCropLeft; }
double getCropTop() const { return mfCropTop; }
double getCropRight() const { return mfCropRight; }
double getCropBottom() const { return mfCropBottom; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
/// local decomposition
virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
/// provide unique ID
virtual sal_uInt32 getPrimitive2DID() const override;
};
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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