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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:54:39 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 05:54:39 +0000 |
commit | 267c6f2ac71f92999e969232431ba04678e7437e (patch) | |
tree | 358c9467650e1d0a1d7227a21dac2e3d08b622b2 /include/drawinglayer/primitive2d/shadowprimitive2d.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip |
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/drawinglayer/primitive2d/shadowprimitive2d.hxx')
-rw-r--r-- | include/drawinglayer/primitive2d/shadowprimitive2d.hxx | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/include/drawinglayer/primitive2d/shadowprimitive2d.hxx b/include/drawinglayer/primitive2d/shadowprimitive2d.hxx new file mode 100644 index 0000000000..39dcbca9fa --- /dev/null +++ b/include/drawinglayer/primitive2d/shadowprimitive2d.hxx @@ -0,0 +1,100 @@ +/* -*- 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/drawinglayerdllapi.h> + +#include <drawinglayer/primitive2d/BufferedDecompositionGroupPrimitive2D.hxx> +#include <basegfx/color/bcolor.hxx> +#include <basegfx/matrix/b2dhommatrix.hxx> + +namespace drawinglayer::primitive2d +{ +/** ShadowPrimitive2D class + + This primitive defines a generic shadow geometry construction + for 2D objects. It decomposes to a TransformPrimitive2D embedded + into a ModifiedColorPrimitive2D. + + It's for primitive usage convenience, so that not everyone has + to implement the generic shadow construction by himself. + + The same geometry as sequence of primitives is used as geometry and + as shadow. Since these are RefCounted Uno-Api objects, no extra objects + are needed for the shadow itself; all the local decompositions of the + original geometry can be reused from the renderer for shadow visualisation. + */ +class DRAWINGLAYER_DLLPUBLIC ShadowPrimitive2D final : public BufferedDecompositionGroupPrimitive2D +{ +private: + /// the shadow transformation, normally just an offset + basegfx::B2DHomMatrix maShadowTransform; + + /// the shadow color to which all geometry is to be forced + basegfx::BColor maShadowColor; + + /// the blur radius of the shadow + double mfShadowBlur; + + /// last used DiscreteBlurRadius and ClippedRange + double mfLastDiscreteBlurRadius; + basegfx::B2DRange maLastClippedRange; + + /// helpers + void getFullyEmbeddedShadowPrimitives(Primitive2DContainer& rContainer) const; + bool prepareValuesAndcheckValidity(basegfx::B2DRange& rRange, basegfx::B2DRange& rClippedRange, + basegfx::B2DVector& rDiscreteSize, + double& rfDiscreteBlurRadius, + const geometry::ViewInformation2D& rViewInformation) const; + +protected: + /** method which is to be used to implement the local decomposition of a 2D primitive. */ + virtual void + create2DDecomposition(Primitive2DContainer& rContainer, + const geometry::ViewInformation2D& rViewInformation) const override; + +public: + /// constructor + ShadowPrimitive2D(basegfx::B2DHomMatrix aShadowTransform, const basegfx::BColor& rShadowColor, + double fShadowBlur, Primitive2DContainer&& aChildren); + + /// data read access + const basegfx::B2DHomMatrix& getShadowTransform() const { return maShadowTransform; } + const basegfx::BColor& getShadowColor() const { return maShadowColor; } + double getShadowBlur() const { return mfShadowBlur; } + + /// compare operator + virtual bool operator==(const BasePrimitive2D& rPrimitive) const override; + + /// get range + virtual basegfx::B2DRange + getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override; + + /// create 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: */ |