forked from amazingfate/loongoffice
cfff893b9c
This also allows to easily add more units, both of length and for other unit categories. The conversion for "Line" unit (312 twip) is questionable. Corresponding entries in aImplFactor in vcl/source/control/field.cxx were inconsistent (45/11 in; 10/13 pc; 156/10 pt). They were added without explanation in commit c85db626029fd8a5e0dfcb312937279df32339a0. I haven't found a spec of the unit (https://en.wikipedia.org/wiki/Line_(unit) is not specific). I used the definition based on "by pt", "by mm/100", "by char" (they all were consistent); "by pc" seems inverted; "by twip" was half as much. This accepted conversion makes unit test for tdf#79236 pass. Change-Id: Iae5a21d915fa8e934a1f47f8ba9f6df03b79a9fd Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110839 Tested-by: Mike Kaganski <mike.kaganski@collabora.com> Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
127 lines
3.7 KiB
C++
127 lines
3.7 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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*/
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#pragma once
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#include <o3tl/unit_conversion.hxx>
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#include <sal/types.h>
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#include <tools/fldunit.hxx>
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#include <tools/fract.hxx>
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#include <tools/mapunit.hxx>
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constexpr o3tl::Length FieldToO3tlLength(FieldUnit eU, o3tl::Length ePixelValue = o3tl::Length::px)
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{
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switch (eU)
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{
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case FieldUnit::MM:
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return o3tl::Length::mm;
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case FieldUnit::CM:
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return o3tl::Length::cm;
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case FieldUnit::M:
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return o3tl::Length::m;
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case FieldUnit::KM:
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return o3tl::Length::km;
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case FieldUnit::TWIP:
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return o3tl::Length::twip;
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case FieldUnit::POINT:
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return o3tl::Length::pt;
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case FieldUnit::PICA:
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return o3tl::Length::pc;
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case FieldUnit::INCH:
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return o3tl::Length::in;
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case FieldUnit::FOOT:
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return o3tl::Length::ft;
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case FieldUnit::MILE:
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return o3tl::Length::mi;
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case FieldUnit::CHAR:
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return o3tl::Length::ch;
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case FieldUnit::LINE:
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return o3tl::Length::line;
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case FieldUnit::MM_100TH:
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return o3tl::Length::mm100;
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case FieldUnit::PIXEL:
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return ePixelValue;
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default:
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return o3tl::Length::invalid;
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}
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}
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constexpr o3tl::Length MapToO3tlLength(MapUnit eU, o3tl::Length ePixelValue = o3tl::Length::px)
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{
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switch (eU)
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{
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case MapUnit::Map100thMM:
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return o3tl::Length::mm100;
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case MapUnit::Map10thMM:
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return o3tl::Length::mm10;
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case MapUnit::MapMM:
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return o3tl::Length::mm;
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case MapUnit::MapCM:
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return o3tl::Length::cm;
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case MapUnit::Map1000thInch:
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return o3tl::Length::in1000;
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case MapUnit::Map100thInch:
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return o3tl::Length::in100;
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case MapUnit::Map10thInch:
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return o3tl::Length::in10;
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case MapUnit::MapInch:
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return o3tl::Length::in;
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case MapUnit::MapPoint:
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return o3tl::Length::pt;
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case MapUnit::MapTwip:
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return o3tl::Length::twip;
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case MapUnit::MapPixel:
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return ePixelValue;
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default:
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return o3tl::Length::invalid;
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}
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}
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inline Fraction conversionFract(o3tl::Length from, o3tl::Length to)
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{
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const auto & [ mul, div ] = o3tl::getConversionMulDiv(from, to);
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return { mul, div };
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}
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template <typename N> constexpr auto convertTwipToMm100(N n)
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{
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return o3tl::convert(n, o3tl::Length::twip, o3tl::Length::mm100);
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}
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template <typename N> constexpr auto convertMm100ToTwip(N n)
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{
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return o3tl::convert(n, o3tl::Length::mm100, o3tl::Length::twip);
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}
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constexpr sal_Int64 sanitiseMm100ToTwip(sal_Int64 n)
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{
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return o3tl::convertSaturate(n, o3tl::Length::mm100, o3tl::Length::twip);
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}
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template <typename N> constexpr auto convertPointToMm100(N n)
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{
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return o3tl::convert(n, o3tl::Length::pt, o3tl::Length::mm100);
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}
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template <typename N> constexpr auto convertMm100ToPoint(N n)
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{
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return o3tl::convert(n, o3tl::Length::mm100, o3tl::Length::pt);
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}
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// PPT's "master unit" (1/576 inch) <=> mm/100
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template <typename N> constexpr auto convertMasterUnitToMm100(N n)
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{
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return o3tl::convert(n, o3tl::Length::master, o3tl::Length::mm100);
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}
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template <typename N> constexpr auto convertMm100ToMasterUnit(N n)
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{
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return o3tl::convert(n, o3tl::Length::mm100, o3tl::Length::master);
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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