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62 lines
1.7 KiB
62 lines
1.7 KiB
// -*- C++ -*-
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//
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// anchor.h
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//
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// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
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//
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// (C) 2004-2005 Stefan Kebekus
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// Distributed under the GPL
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#ifndef ANCHOR_H
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#define ANCHOR_H
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#include "length.h"
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#include "pageNumber.h"
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/** \brief Page number and vertical position in physical coordinates
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This very simple class contains a page number and a vertical position
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in physical coordiantes. The vertical position is given by the
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distance from the top of the page. Anchors are completely independent
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of documents, there is no need for a document to exists that contains
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the given page, nor does the page number need to be valid.
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@author Stefan Kebekus <kebekus@kde.org>
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@version 1.0 0
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*/
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class Anchor {
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public:
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/** \brief Constructs an anchor that points to an invalid page */
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Anchor() {page = 0;}
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/** \brief Constructs an snchor that points to a given position on a
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given page
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The class contains no code to make sure in any way that the page
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number pg exists, and that page pg, if it exists, is taller than
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distance_from_top
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@param pg number of the page
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@param _distance_from_top distance from the top of the page
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*/
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Anchor(const PageNumber& pg, const Length& _distance_from_top): page(pg), distance_from_top(_distance_from_top) {}
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/** \brief quick validity check for anchors
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@returns true if the page number is valid, and 0mm <= distance_from_top <= 2m
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*/
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bool isValid() const {return page.isValid() && (0.0 <= distance_from_top.getLength_in_mm()) && (distance_from_top.getLength_in_mm() <= 2000.0);}
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/** \brief Page number that this anchor point to */
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PageNumber page;
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/** \brief Distance from the top of the page in inch */
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Length distance_from_top;
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};
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#endif
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