123 lines
4 KiB
C++
123 lines
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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#include <SvgNumber.hxx>
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#include <o3tl/unit_conversion.hxx>
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#include <sal/log.hxx>
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namespace svgio::svgreader
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{
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double SvgNumber::solveNonPercentage(const InfoProvider& rInfoProvider) const
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{
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if (!isSet())
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{
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SAL_WARN("svgio", "SvgNumber not set (!)");
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return 0.0;
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}
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switch (meUnit)
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{
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// See https://drafts.csswg.org/css-values-4/#font-relative-length
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case SvgUnit::em:
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return mfNumber * rInfoProvider.getCurrentFontSize();
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case SvgUnit::ex:
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return mfNumber * rInfoProvider.getCurrentXHeight();
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case SvgUnit::px:
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return mfNumber;
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case SvgUnit::pt:
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return o3tl::convert(mfNumber, o3tl::Length::pt, o3tl::Length::px);
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case SvgUnit::pc:
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return o3tl::convert(mfNumber, o3tl::Length::pc, o3tl::Length::px);
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case SvgUnit::cm:
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return o3tl::convert(mfNumber, o3tl::Length::cm, o3tl::Length::px);
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case SvgUnit::mm:
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return o3tl::convert(mfNumber, o3tl::Length::mm, o3tl::Length::px);
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case SvgUnit::in:
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return o3tl::convert(mfNumber, o3tl::Length::in, o3tl::Length::px);
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case SvgUnit::none:
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{
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SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
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return mfNumber;
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}
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case SvgUnit::percent:
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{
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SAL_WARN("svgio", "Do not use with percentage!");
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break;
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}
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}
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return 0.0;
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}
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double SvgNumber::solve(const InfoProvider& rInfoProvider, NumberType aNumberType) const
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{
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if (!isSet())
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{
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SAL_WARN("svgio", "SvgNumber not set (!)");
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return 0.0;
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}
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if (meUnit == SvgUnit::percent)
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{
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double fRetval(mfNumber * 0.01);
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basegfx::B2DRange aViewPort = rInfoProvider.getCurrentViewPort();
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if ( aViewPort.isEmpty() )
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{
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SAL_WARN("svgio", "Design error, this case should have been handled in the caller");
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// no viewPort, assume a normal page size (A4)
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aViewPort = basegfx::B2DRange(
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0.0,
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0.0,
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o3tl::convert(210.0, o3tl::Length::cm, o3tl::Length::px), // should it be mm?
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o3tl::convert(297.0, o3tl::Length::cm, o3tl::Length::px));
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}
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if ( !aViewPort.isEmpty() )
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{
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if (NumberType::xcoordinate == aNumberType)
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{
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// it's a x-coordinate, relative to current width (w)
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fRetval *= aViewPort.getWidth();
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}
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else if (NumberType::ycoordinate == aNumberType)
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{
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// it's a y-coordinate, relative to current height (h)
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fRetval *= aViewPort.getHeight();
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}
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else // length
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{
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// it's a length, relative to sqrt((w^2 + h^2)/2)
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const double fDiagLength(std::hypot(aViewPort.getWidth(), aViewPort.getHeight()));
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fRetval *= fDiagLength / M_SQRT2;
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}
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}
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return fRetval;
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}
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return solveNonPercentage( rInfoProvider);
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}
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} // end of namespace svgio::svgreader
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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