58bc1cba20
and remove unused LINE_HORIZONTAL Change-Id: I39ee05b444b4da46758ff30176e041a02bee54e8 Reviewed-on: https://gerrit.libreoffice.org/63740 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
129 lines
5.4 KiB
C++
129 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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#ifndef INCLUDED_VCL_INC_REGBAND_HXX
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#define INCLUDED_VCL_INC_REGBAND_HXX
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/*
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class ImplRegionBand
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This class handles one y-band of the region. In this band may contain one
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or more separations in x-direction. The y-Band do not contain any
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separation after creation.
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The separations are modified with basic clipping functions like Union and
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Intersection - the Class will process the clipping for the actual band.
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*/
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// element for the list with x-separations
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struct ImplRegionBandSep
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{
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ImplRegionBandSep* mpNextSep;
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long mnXLeft;
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long mnXRight;
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bool mbRemoved;
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};
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enum class LineType { Ascending, Descending };
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// element for the list with x-separations
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struct ImplRegionBandPoint
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{
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ImplRegionBandPoint* mpNextBandPoint;
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long mnX;
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long mnLineId;
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bool mbEndPoint;
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LineType meLineType;
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};
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class ImplRegionBand
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{
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public:
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ImplRegionBand* mpNextBand; // pointer to the next element of the list
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ImplRegionBand* mpPrevBand; // pointer to the previous element of the list (only used temporarily)
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ImplRegionBandSep* mpFirstSep; // root of the list with x-separations
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ImplRegionBandPoint* mpFirstBandPoint; // root of the list with lines
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long mnYTop; // actual boundary of the band
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long mnYBottom;
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bool mbTouched : 1;
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// create y-band with boundaries
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ImplRegionBand( long nYTop, long nYBottom );
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/** copy y-band with all data
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@param theSourceBand
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The new ImplRegionBand object will
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be a copy of this band.
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@param bIgnorePoints
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When true (the default) the
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band points pointed to by
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mpFirstBandPoint are not copied.
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When false they are copied.
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You need the points when you are
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planning to call ProcessPoints()
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later on.
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*/
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ImplRegionBand( const ImplRegionBand & theSourceBand,
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const bool bIgnorePoints = true);
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~ImplRegionBand();
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long GetXLeftBoundary() const;
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long GetXRightBoundary() const;
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// combine overlapping bands
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void OptimizeBand();
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// generate separations from lines and process
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// union with existing separations
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void ProcessPoints();
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// insert point in the list for later processing
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bool InsertPoint( long nX, long nLineID,
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bool bEndPoint, LineType eLineType );
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void Union( long nXLeft, long nXRight );
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void Intersect( long nXLeft, long nXRight );
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void Exclude( long nXLeft, long nXRight );
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void XOr( long nXLeft, long nXRight );
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void MoveX( long nHorzMove );
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void ScaleX( double fHorzScale );
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bool IsInside( long nX );
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bool IsEmpty() const { return ((!mpFirstSep) && (!mpFirstBandPoint)); }
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bool operator==( const ImplRegionBand& rRegionBand ) const;
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/** Split the called band at the given vertical coordinate. After the
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split the called band will cover the upper part not including nY.
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The new band will cover the lower part including nY.
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@param nY
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The band is split at this y coordinate. The new, lower band
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will include this very value.
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@return
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Returns the new, lower band.
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*/
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ImplRegionBand* SplitBand (const sal_Int32 nY);
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};
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#endif // INCLUDED_VCL_INC_REGBAND_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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