/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* This file incorporates work covered by the following license notice :
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* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
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* ownership . The ASF licenses this file to you under the Apache
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*/
#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,
basegfx::B2DHomMatrix aTransformation,
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
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