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-rw-r--r--src/gui/painting/qrangecollection.cpp281
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diff --git a/src/gui/painting/qrangecollection.cpp b/src/gui/painting/qrangecollection.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2020 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtGui 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.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qrangecollection.h"
-#include "qrangecollection_p.h"
-
-#include <QtCore/qstack.h>
-
-QT_BEGIN_NAMESPACE
-
-void QRangeCollectionPrivate::mergeIntervals()
-{
- const int count = intervals.count();
-
- if (count <= 0)
- return;
-
- std::sort(intervals.begin(), intervals.end());
-
- QStack<QPair<int, int>> stack;
- stack.push(intervals[0]);
-
- for (int i = 1; i < count; i++) {
- QPair<int, int> &top = stack.top();
-
- if (top.second < intervals[i].first)
- stack.push(intervals[i]);
- else if (top.second < intervals[i].second)
- top.second = intervals[i].second;
- }
-
- std::sort(intervals.begin(), intervals.end());
-
- intervals = stack;
-}
-
-/*!
- \class QRangeCollection
- \brief The QRangeCollection class represents a collection of decimal intervals.
- \inmodule QtGui
- \ingroup painting
- \since 6.0
-
- QRangeCollection manages a set of decimal intervals.
-
- Use QPrinter::rangeCollection() to access the collection of page ranges
- associated with a QPrinter.
-*/
-
-QRangeCollection::QRangeCollection()
- : d_ptr(new QRangeCollectionPrivate(this))
-{
-}
-
-/*!
- Destroys the collection.
-*/
-QRangeCollection::~QRangeCollection()
-{
-}
-
-/*!
- Inserts a single number into the collection.
- */
-void QRangeCollection::addPage(int pageNumber)
-{
- Q_D(QRangeCollection);
- if (pageNumber <= 0) {
- qWarning("QRangeCollection::addPage: 'pageNumber' must be greater than 0");
- return;
- }
- d->intervals.append(qMakePair(pageNumber, pageNumber));
- d->mergeIntervals();
-}
-
-/*!
- Inserts a range into the collection.
- */
-void QRangeCollection::addRange(int from, int to)
-{
- Q_D(QRangeCollection);
- if (from <= 0 || to <= 0) {
- qWarning("QRangeCollection::addRange: 'from' and 'to' must be greater than 0");
- return;
- }
- if (to < from) {
- qWarning("QRangeCollection::addRange: 'from' must be less than or equal to 'to'");
- std::swap(from, to);
- }
- d->intervals.append(qMakePair(from, to));
- d->mergeIntervals();
-}
-
-/*!
- Returns a list with the values of the ranges used in this collection.
- */
-QList<QPair<int, int>> QRangeCollection::toList() const
-{
- Q_D(const QRangeCollection);
- return d->intervals.toList();
-}
-
-/*!
- * Removes all ranges from this collection.
- */
-void QRangeCollection::clear()
-{
- Q_D(QRangeCollection);
- d->intervals.clear();
-}
-
-/*!
- Constructs the range collection from a string representation.
-
- \code
- QPrinter printer;
- printer->rangeCollection()->parse("1-3,6-7");
- \endcode
- */
-bool QRangeCollection::parse(const QString &ranges)
-{
- Q_D(QRangeCollection);
- const QStringList items = ranges.split(u',');
- for (const QString &item : items) {
- if (item.isEmpty()) {
- d->intervals.clear();
- return false;
- }
-
- if (item.contains(QLatin1Char('-'))) {
- const QStringList rangeItems = item.split(u'-');
- if (rangeItems.count() != 2) {
- d->intervals.clear();
- return false;
- }
-
- bool ok;
- const int number1 = rangeItems[0].toInt(&ok);
- if (!ok) {
- d->intervals.clear();
- return false;
- }
-
- const int number2 = rangeItems[1].toInt(&ok);
- if (!ok) {
- d->intervals.clear();
- return false;
- }
-
- if (number1 < 1 || number2 < 1 || number2 < number1) {
- d->intervals.clear();
- return false;
- }
-
- d->intervals.append(qMakePair(number1, number2));
-
- } else {
- bool ok;
- const int number = item.toInt(&ok);
- if (!ok) {
- d->intervals.clear();
- return false;
- }
-
- if (number < 1) {
- d->intervals.clear();
- return false;
- }
-
- d->intervals.append(qMakePair(number, number));
- }
- }
-
- d->mergeIntervals();
- return true;
-}
-
-/*!
- Returns the string representation of the ranges in the collection.
- */
-QString QRangeCollection::toString() const
-{
- Q_D(const QRangeCollection);
- QString result;
-
- for (const QPair<int, int> &pair : d->intervals) {
- if (!result.isEmpty())
- result += QLatin1Char(',');
-
- if (pair.first == pair.second)
- result += QString::number(pair.first);
- else
- result += QStringLiteral("%1-%2").arg(pair.first).arg(pair.second);
- }
-
- return result;
-}
-
-/*!
- Returns \c true if the collection contains an occurrence
- or a bounding range of \a pageNumber; otherwise returns
- \c false.
- */
-bool QRangeCollection::contains(int pageNumber) const
-{
- Q_D(const QRangeCollection);
- for (const QPair<int, int> &pair : d->intervals) {
- if (pair.first <= pageNumber && pair.second >= pageNumber)
- return true;
- }
- return false;
-}
-
-/*!
- Returns \c true if the collection is empty; otherwise returns \c false.
-*/
-bool QRangeCollection::isEmpty() const
-{
- Q_D(const QRangeCollection);
- return d->intervals.isEmpty();
-}
-
-/*!
- Returns the index of the first page covered by the range collection.
-*/
-int QRangeCollection::firstPage() const
-{
- Q_D(const QRangeCollection);
- if (d->intervals.isEmpty())
- return 0;
- return d->intervals.first().first;
-}
-
-/*!
- Returns the index of the last page covered by the range collection.
-*/
-int QRangeCollection::lastPage() const
-{
- Q_D(const QRangeCollection);
- if (d->intervals.isEmpty())
- return 0;
- return d->intervals.last().second;
-}
-
-QT_END_NAMESPACE
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