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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/drawinglayerdllapi.h>
+
+#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
+#include <drawinglayer/attribute/fillgradientattribute.hxx>
+
+
+// predefines
+
+namespace basegfx { class B2DPolygon; }
+
+
+// FillGradientPrimitive2D class
+
+namespace drawinglayer::primitive2d
+{
+ /** FillGradientPrimitive2D class
+
+ This class defines a gradient filling for a rectangular area. The
+ Range is defined by the Transformation, the gradient by the FillGradientAttribute.
+
+ The decomposition will deliver the decomposed gradient, e.g. for an ellipse
+ gradient the various ellipses in various color steps will be created.
+
+ I have added functionality to create both versions of filled decompositions:
+ Those who overlap and non-overlapping ones. The overlapping version is the
+ default one since it works with and without AntiAliasing. The non-overlapping
+ version is used in the MetafilePrimitive2D decomposition when the old XOR
+ paint was recorded.
+ */
+ class DRAWINGLAYER_DLLPUBLIC FillGradientPrimitive2D : public BufferedDecompositionPrimitive2D
+ {
+ private:
+ /// the geometrically visible area
+ basegfx::B2DRange maOutputRange;
+
+ /// the area the gradient definition is based on
+ /// in the simplest case identical to OutputRange
+ basegfx::B2DRange maDefinitionRange;
+
+ /// the gradient definition
+ attribute::FillGradientAttribute maFillGradient;
+
+
+ protected:
+ /// local helper
+ void createFill(Primitive2DContainer& rContainer, bool bOverlapping) const;
+
+ /// local decomposition.
+ virtual void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;
+
+ public:
+ /// helpers that support e.g. direct paint/geometry creation
+ basegfx::B2DPolygon getUnitPolygon() const;
+ basegfx::BColor getOuterColor() const;
+ void generateMatricesAndColors(
+ std::function<void(const basegfx::B2DHomMatrix& rMatrix, const basegfx::BColor& rColor)> aCallback) const;
+
+ /// constructors. The one without definition range will use output range as definition range
+ FillGradientPrimitive2D(
+ const basegfx::B2DRange& rOutputRange,
+ attribute::FillGradientAttribute aFillGradient);
+ FillGradientPrimitive2D(
+ const basegfx::B2DRange& rOutputRange,
+ const basegfx::B2DRange& rDefinitionRange,
+ attribute::FillGradientAttribute aFillGradient);
+
+ /// data read access
+ const basegfx::B2DRange& getOutputRange() const { return maOutputRange; }
+ const basegfx::B2DRange& getDefinitionRange() const { return maDefinitionRange; }
+ const attribute::FillGradientAttribute& getFillGradient() const { return maFillGradient; }
+
+ /// compare operator
+ virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+ /// get range
+ virtual basegfx::B2DRange getB2DRange(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: */