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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 .
+ */
+
+#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CROPPRIMITIVE2D_HXX
+#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CROPPRIMITIVE2D_HXX
+
+#include <drawinglayer/drawinglayerdllapi.h>
+#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace drawinglayer
+{
+ namespace 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 rurrent 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 exsisting content to get it to the uncropped state
+ ans 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; inthe 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 DRAWINGLAYER_DLLPUBLIC CropPrimitive2D : 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(
+ const Primitive2DSequence& rChildren,
+ 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;
+
+ /// local decomposition
+ virtual Primitive2DSequence get2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
+
+ /// provide unique ID
+ DeclPrimitrive2DIDBlock()
+ };
+ } // end of namespace primitive2d
+} // end of namespace drawinglayer
+
+//////////////////////////////////////////////////////////////////////////////
+
+#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_CROPPRIMITIVE2D_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */