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Diffstat (limited to '')
| -rw-r--r-- | include/tools/UnitConversion.hxx | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/tools/UnitConversion.hxx b/include/tools/UnitConversion.hxx new file mode 100644 index 000000000..e59077d8a --- /dev/null +++ b/include/tools/UnitConversion.hxx @@ -0,0 +1,31 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + */ + +#pragma once + +constexpr sal_Int64 convertTwipToMm100(sal_Int64 n) +{ + return (n >= 0) ? (n * 127 + 36) / 72 : (n * 127 - 36) / 72; +} + +constexpr sal_Int64 convertPointToMm100(sal_Int64 n) { return convertTwipToMm100(n * 20); } + +constexpr sal_Int64 convertMm100ToTwip(sal_Int64 n) +{ + return (n >= 0) ? (n * 72 + 63) / 127 : (n * 72 - 63) / 127; +} + +// Convert PPT's "master unit" (1/576 inch) to twips +constexpr sal_Int64 convertMasterUnitToTwip(sal_Int64 n) { return n * 2540.0 / 576.0; } + +// Convert twips to PPT's "master unit" +constexpr sal_Int64 convertTwipToMasterUnit(sal_Int64 n) { return n / (2540.0 / 576.0); } + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |