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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 <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/color/bcolor.hxx>
+#include <vcl/bitmapex.hxx>
+
+
+// GridPrimitive2D class
+
+namespace drawinglayer::primitive2d
+{
+ /** GridPrimitive2D class
+
+ This primitive is specialized to Grid visualisation. The graphic definition
+ (Transform) contains the whole grid area, but will of course be combined
+ with the visible area (Viewport) when decomposed. Also a resolution-dependent
+ point reduction is used to not create too much grid visualisation data. This
+ makes this primitive highly view-dependent and it dynamically buffers
+ the last decomposition dependent from the Viewport used.
+ */
+ class DRAWINGLAYER_DLLPUBLIC GridPrimitive2D final : public BufferedDecompositionPrimitive2D
+ {
+ private:
+ /// The geometry definition for the grid area
+ basegfx::B2DHomMatrix maTransform;
+
+ /// grid layout definitions
+ double mfWidth;
+ double mfHeight;
+ double mfSmallestViewDistance;
+ double mfSmallestSubdivisionViewDistance;
+ sal_uInt32 mnSubdivisionsX;
+ sal_uInt32 mnSubdivisionsY;
+
+ /// Grid color for single-pixel grid points
+ basegfx::BColor maBColor;
+
+ /// The Bitmap (with transparence) for grid cross points
+ BitmapEx maCrossMarker;
+
+ /** the last used object to view transformtion and the last Viewport,
+ used from getDecomposition for decide buffering
+ */
+ basegfx::B2DHomMatrix maLastObjectToViewTransformation;
+ basegfx::B2DRange maLastViewport;
+
+ /// create local decomposition
+ virtual void create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& rViewInformation) const override;
+
+ public:
+ /// constructor
+ GridPrimitive2D(
+ basegfx::B2DHomMatrix aTransform,
+ double fWidth,
+ double fHeight,
+ double fSmallestViewDistance,
+ double fSmallestSubdivisionViewDistance,
+ sal_uInt32 nSubdivisionsX,
+ sal_uInt32 nSubdivisionsY,
+ const basegfx::BColor& rBColor,
+ const BitmapEx& rCrossMarker);
+
+ /// data read access
+ const basegfx::B2DHomMatrix& getTransform() const { return maTransform; }
+ double getWidth() const { return mfWidth; }
+ double getHeight() const { return mfHeight; }
+ double getSmallestViewDistance() const { return mfSmallestViewDistance; }
+ double getSmallestSubdivisionViewDistance() const { return mfSmallestSubdivisionViewDistance; }
+ sal_uInt32 getSubdivisionsX() const { return mnSubdivisionsX; }
+ sal_uInt32 getSubdivisionsY() const { return mnSubdivisionsY; }
+ const basegfx::BColor& getBColor() const { return maBColor; }
+ const BitmapEx& getCrossMarker() const { return maCrossMarker; }
+
+ /// compare operator
+ virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
+
+ /// get 2d range
+ virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const override;
+
+ /// provide unique ID
+ virtual sal_uInt32 getPrimitive2DID() const override;
+
+ /// Override standard getDecomposition to be view-dependent here
+ virtual void get2DDecomposition(Primitive2DDecompositionVisitor& rVisitor, const geometry::ViewInformation2D& rViewInformation) const override;
+ };
+} // end of namespace drawinglayer::primitive2d
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */