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// Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "zoomselector.h"
#include <QEvent>
#include <QLineEdit>
#include <array>
static constexpr std::array factors= { 12, 25, 33, 50, 66, 75, 100, 125, 150, 200, 400 };
ZoomSelector::ZoomSelector(QWidget *parent)
: QComboBox(parent)
{
setSizeAdjustPolicy(QComboBox::AdjustToContents);
setEditable(true);
// ZoomMode::FitToWidth, ZoomMode::FitInView + factors
addItems(QStringList(2 + factors.size(), QString{}));
retranslate();
connect(this, &QComboBox::currentTextChanged,
this, &ZoomSelector::onCurrentTextChanged);
connect(lineEdit(), &QLineEdit::editingFinished,
this, [this](){onCurrentTextChanged(lineEdit()->text()); });
}
void ZoomSelector::retranslate()
{
int i = 0;
setItemText(i++, tr("Fit Width"));
setItemText(i++, tr("Fit Page"));
const QString &percent = QLocale().percent();
for (auto factor : factors)
setItemText(i++, QString::number(factor) + percent);
}
void ZoomSelector::changeEvent(QEvent *event)
{
if (event->type() == QEvent::LanguageChange)
retranslate();
QComboBox::changeEvent(event);
}
void ZoomSelector::setZoomFactor(qreal zoomFactor)
{
setCurrentText(QString::number(qRound(zoomFactor * 100)) + QLocale().percent());
}
void ZoomSelector::reset()
{
setCurrentIndex(8); // 100%
}
void ZoomSelector::onCurrentTextChanged(const QString &text)
{
if (text == itemText(0)) {
emit zoomModeChanged(QPdfView::ZoomMode::FitToWidth);
} else if (text == itemText(1)) {
emit zoomModeChanged(QPdfView::ZoomMode::FitInView);
} else {
qreal factor = 1.0;
QString withoutPercent(text);
withoutPercent.remove(QLocale().percent());
bool ok = false;
const int zoomLevel = withoutPercent.toInt(&ok);
if (ok)
factor = zoomLevel / 100.0;
emit zoomModeChanged(QPdfView::ZoomMode::Custom);
emit zoomFactorChanged(factor);
}
}