mirror of https://github.com/JakubMelka/PDF4QT.git
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
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// Copyright (C) 2018 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFGLOBAL_H
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#define PDFGLOBAL_H
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#include <QtGlobal>
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#include <limits>
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#include <tuple>
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#if defined(PDFFORQTLIB_LIBRARY)
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# define PDFFORQTLIBSHARED_EXPORT Q_DECL_EXPORT
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#else
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# define PDFFORQTLIBSHARED_EXPORT Q_DECL_IMPORT
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#endif
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namespace pdf
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{
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using PDFInteger = int64_t;
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using PDFReal = double;
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// These constants define minimum/maximum integer and are defined in such a way,
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// that even 100 times bigger integers are representable.
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constexpr PDFInteger PDF_INTEGER_MIN = std::numeric_limits<int64_t>::min() / 100;
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constexpr PDFInteger PDF_INTEGER_MAX = std::numeric_limits<int64_t>::max() / 100;
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static constexpr bool isValidInteger(PDFInteger integer)
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{
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return integer >= PDF_INTEGER_MIN && integer <= PDF_INTEGER_MAX;
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}
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/// This structure represents a reference to the object - consisting of the
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/// object number, and generation number.
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struct PDFObjectReference
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{
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constexpr inline PDFObjectReference() :
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objectNumber(0),
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generation(0)
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{
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}
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constexpr inline PDFObjectReference(PDFInteger objectNumber, PDFInteger generation) :
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objectNumber(objectNumber),
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generation(generation)
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{
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}
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PDFInteger objectNumber;
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PDFInteger generation;
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constexpr bool operator==(const PDFObjectReference& other) const
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{
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return objectNumber == other.objectNumber && generation == other.generation;
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}
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constexpr bool operator!=(const PDFObjectReference& other) const { return !(*this == other); }
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constexpr bool operator<(const PDFObjectReference& other) const
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{
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return std::tie(objectNumber, generation) < std::tie(other.objectNumber, other.generation);
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}
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};
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/// Represents version identification
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struct PDFVersion
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{
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constexpr explicit PDFVersion() = default;
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constexpr explicit PDFVersion(uint16_t major, uint16_t minor) :
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major(major),
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minor(minor)
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{
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}
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uint16_t major = 0;
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uint16_t minor = 0;
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bool isValid() const { return major > 0; }
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};
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} // namespace pdf
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#endif // PDFGLOBAL_H
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