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Diffstat (limited to 'src/qml/qml/qqmlsourcecoordinate_p.h')
-rw-r--r-- | src/qml/qml/qqmlsourcecoordinate_p.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/qml/qml/qqmlsourcecoordinate_p.h b/src/qml/qml/qqmlsourcecoordinate_p.h new file mode 100644 index 0000000000..55e11fd147 --- /dev/null +++ b/src/qml/qml/qqmlsourcecoordinate_p.h @@ -0,0 +1,95 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLSOURCECOORDINATE_P_H +#define QQMLSOURCECOORDINATE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qglobal.h> + +#include <limits> + +QT_BEGIN_NAMESPACE + +// These methods are needed because in some public methods we historically interpret -1 as the +// invalid line or column, even though all the lines and columns are 1-based. Also, the different +// integer ranges may turn certain large values into invalid ones on conversion. + +template<typename From, typename To> +To qmlConvertSourceCoordinate(From n); + +template<> +inline quint16 qmlConvertSourceCoordinate<int, quint16>(int n) +{ + return (n > 0 && n <= int(std::numeric_limits<quint16>::max())) ? quint16(n) : 0; +} + +template<> +inline quint32 qmlConvertSourceCoordinate<int, quint32>(int n) +{ + return n > 0 ? quint32(n) : 0u; +} + +// TODO: In Qt6, change behavior and make the invalid coordinate 0 for the following two methods. + +template<> +inline int qmlConvertSourceCoordinate<quint16, int>(quint16 n) +{ + return (n == 0u) ? -1 : int(n); +} + +template<> +inline int qmlConvertSourceCoordinate<quint32, int>(quint32 n) +{ + return (n == 0u || n > quint32(std::numeric_limits<int>::max())) ? -1 : int(n); +} + +QT_END_NAMESPACE + +#endif // QQMLSOURCECOORDINATE_P_H |