PDF4QT/Pdf4QtLib/sources/pdfexception.h

119 lines
2.9 KiB
C++

// Copyright (C) 2019-2021 Jakub Melka
//
// This file is part of PDF4QT.
//
// PDF4QT is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// PDF4QT is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#ifndef PDFEXCEPTION_H
#define PDFEXCEPTION_H
#include <QString>
namespace pdf
{
class PDFException : public std::exception
{
public:
PDFException(const QString& message) :
m_message(message)
{
}
/// Returns error message
const QString& getMessage() const { return m_message; }
private:
QString m_message;
};
enum RenderErrorType
{
Error,
Warning,
NotImplemented,
NotSupported,
Information
};
struct PDFRenderError
{
explicit PDFRenderError() = default;
explicit PDFRenderError(RenderErrorType type, QString message) :
type(type),
message(std::move(message))
{
}
RenderErrorType type = RenderErrorType::Error;
QString message;
};
class PDFRendererException : public std::exception
{
public:
explicit PDFRendererException(RenderErrorType type, QString message) :
m_error(type, std::move(message))
{
}
const PDFRenderError& getError() const { return m_error; }
private:
PDFRenderError m_error;
};
/// Abstract class for reporting render errors
class PDFRenderErrorReporter
{
public:
explicit PDFRenderErrorReporter() = default;
virtual ~PDFRenderErrorReporter() = default;
/// Reports render errors
/// \param type Error type
/// \param message Error message
virtual void reportRenderError(RenderErrorType type, QString message) = 0;
/// Reports render error, but only once - if same error was already reported,
/// then no new error is reported.
/// \param type Error type
/// \param message Error message
virtual void reportRenderErrorOnce(RenderErrorType type, QString message) = 0;
};
/// Dummy class for reporting render errors
class PDFRenderErrorReporterDummy : public PDFRenderErrorReporter
{
public:
virtual void reportRenderError(RenderErrorType type, QString message) override
{
Q_UNUSED(type);
Q_UNUSED(message);
}
virtual void reportRenderErrorOnce(RenderErrorType type, QString message) override
{
Q_UNUSED(type);
Q_UNUSED(message);
}
};
} // namespace pdf
#endif // PDFEXCEPTION_H