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| -rw-r--r-- | drawinglayer/inc/primitive2d/cropprimitive2d.hxx | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drawinglayer/inc/primitive2d/cropprimitive2d.hxx b/drawinglayer/inc/primitive2d/cropprimitive2d.hxx new file mode 100644 index 000000000..3bed0638f --- /dev/null +++ b/drawinglayer/inc/primitive2d/cropprimitive2d.hxx @@ -0,0 +1,93 @@ +/* -*- 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: */ |