3b83c6ac80
.. instead of a Primitive2DContainer. The container very frequently contains only a single item, since the decomposition method often sticks only a single top-level node in there, so it turns out to be a net loss overall, memory consumption-wise. Also, if we return a single Primitive2DReference from a BufferedDecomposition, that maximises the sharing of data between the BufferedDecomposition objects at the bottom of the decomposed tree, and objects higher up. Change-Id: Iaf272e60e2997299cc35a1bd209c51b6b79e9a8b Reviewed-on: https://gerrit.libreoffice.org/c/core/+/162976 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
145 lines
5.4 KiB
C++
145 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <drawinglayer/drawinglayerdllapi.h>
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#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
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#include <drawinglayer/attribute/lineattribute.hxx>
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#include <drawinglayer/attribute/strokeattribute.hxx>
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enum class SvxBorderLineStyle : sal_Int16;
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namespace drawinglayer::primitive2d
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{
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/** BorderLine class
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Helper class holding the style definition for a single part of a full BorderLine definition.
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Line extends are for start/end and for Left/Right, seen in vector direction. If
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Left != Right that means the line has a diagonal start/end.
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Think about it similar to a trapezoid, but not aligned to X-Axis and using the
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perpendicular vector to the given one in a right-handed coordinate system.
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*/
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class DRAWINGLAYER_DLLPUBLIC BorderLine
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{
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private:
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// line attribute containing Width, Color and others
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drawinglayer::attribute::LineAttribute maLineAttribute;
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// line extends
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double mfStartLeft;
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double mfStartRight;
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double mfEndLeft;
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double mfEndRight;
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// if this is a gap, this is set to true
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bool mbIsGap;
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public:
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// Constructor for visible BorderLine segments
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BorderLine(const drawinglayer::attribute::LineAttribute& rLineAttribute,
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double fStartLeft = 0.0, double fStartRight = 0.0, double fEndLeft = 0.0,
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double fEndRight = 0.0);
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// Constructor for gap BorderLine segments
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BorderLine(double fWidth);
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~BorderLine();
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BorderLine(BorderLine const&) = default;
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BorderLine(BorderLine&&) = default;
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BorderLine& operator=(BorderLine const&) = default;
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BorderLine& operator=(BorderLine&&) = default;
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const drawinglayer::attribute::LineAttribute& getLineAttribute() const
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{
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return maLineAttribute;
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}
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double getStartLeft() const { return mfStartLeft; }
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double getStartRight() const { return mfStartRight; }
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double getEndLeft() const { return mfEndLeft; }
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double getEndRight() const { return mfEndRight; }
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bool isGap() const { return mbIsGap; }
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/// compare operator
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bool operator==(const BorderLine& rBorderLine) const;
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};
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/** BorderLinePrimitive2D class
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This is the basic primitive to build frames around objects, e.g. tables.
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It defines a single or double line from Start to End using the LeftWidth,
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Distance and RightWidth definitions.
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The LineStart/End overlap is defined in the BorderLines definitions (see
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class BorderLine above).
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*/
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class DRAWINGLAYER_DLLPUBLIC BorderLinePrimitive2D final : public BufferedDecompositionPrimitive2D
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{
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private:
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/// the line definition
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basegfx::B2DPoint maStart;
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basegfx::B2DPoint maEnd;
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/// the single BorderLine style definition(s), one or three mostly used
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std::vector<BorderLine> maBorderLines;
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/// common style definitions
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const drawinglayer::attribute::StrokeAttribute maStrokeAttribute;
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/// create local decomposition
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virtual Primitive2DReference
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create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const override;
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/// helper to get the full width from maBorderLines
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double getFullWidth() const;
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public:
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/// simplified constructor for BorderLine with single edge
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BorderLinePrimitive2D(const basegfx::B2DPoint& rStart, const basegfx::B2DPoint& rEnd,
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std::vector<BorderLine>&& rBorderLines,
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drawinglayer::attribute::StrokeAttribute aStrokeAttribute);
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/// data read access
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const basegfx::B2DPoint& getStart() const { return maStart; }
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const basegfx::B2DPoint& getEnd() const { return maEnd; }
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const std::vector<BorderLine>& getBorderLines() const { return maBorderLines; }
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const drawinglayer::attribute::StrokeAttribute& getStrokeAttribute() const
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{
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return maStrokeAttribute;
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}
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/// helper to decide if AntiAliasing should be used
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bool isHorizontalOrVertical(const geometry::ViewInformation2D& rViewInformation) const;
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/// compare operator
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virtual bool operator==(const BasePrimitive2D& rPrimitive) const override;
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/// provide unique ID
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virtual sal_uInt32 getPrimitive2DID() const override;
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};
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/// helper to try to merge two instances of BorderLinePrimitive2D. If it was possible,
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/// a merged version is in the returned Primitive2DReference. Lots of preconditions
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/// have to be met to allow that, see implementation (and maybe even expand)
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Primitive2DReference DRAWINGLAYER_DLLPUBLIC tryMergeBorderLinePrimitive2D(
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const BorderLinePrimitive2D* pCandidateA, const BorderLinePrimitive2D* pCandidateB);
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} // end of namespace drawinglayer::primitive2d
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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