125 lines
2.8 KiB
C++
125 lines
2.8 KiB
C++
// This file is part of Desktop App Toolkit,
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// a set of libraries for developing nice desktop applications.
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//
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// For license and copyright information please follow this link:
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// https://github.com/desktop-app/legal/blob/master/LEGAL
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//
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#include "ui/widgets/fields/time_part_input.h"
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#include "base/qt/qt_string_view.h"
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#include "ui/ui_utility.h" // WheelDirection
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#include <QtCore/QRegularExpression>
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namespace Ui {
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std::optional<int> TimePart::number() {
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const auto text = getLastText();
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auto view = QStringView(text);
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while (view.size() > 1 && view.at(0) == '0') {
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view = base::StringViewMid(view, 1);
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}
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return QRegularExpression("^\\d+$").match(view).hasMatch()
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? std::make_optional(view.toInt())
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: std::nullopt;
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}
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void TimePart::setMaxValue(int value) {
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_maxValue = value;
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_maxDigits = 0;
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while (value > 0) {
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++_maxDigits;
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value /= 10;
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}
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}
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void TimePart::setWheelStep(int value) {
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_wheelStep = value;
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}
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rpl::producer<> TimePart::erasePrevious() const {
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return _erasePrevious.events();
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}
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rpl::producer<QChar> TimePart::putNext() const {
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return _putNext.events();
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}
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void TimePart::keyPressEvent(QKeyEvent *e) {
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const auto isBackspace = (e->key() == Qt::Key_Backspace);
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const auto isBeginning = (cursorPosition() == 0);
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if (isBackspace && isBeginning && !hasSelectedText()) {
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_erasePrevious.fire({});
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} else {
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MaskedInputField::keyPressEvent(e);
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}
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}
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void TimePart::wheelEvent(QWheelEvent *e) {
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const auto direction = WheelDirection(e);
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const auto now = number();
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if (!now.has_value()) {
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return;
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}
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auto time = *now + (direction * _wheelStep);
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const auto max = _maxValue + 1;
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if (time < 0) {
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time += max;
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} else if (time >= max) {
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time -= max;
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}
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setText(QString::number(time));
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Ui::MaskedInputField::changed();
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}
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void TimePart::correctValue(
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const QString &was,
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int wasCursor,
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QString &now,
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int &nowCursor) {
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auto newText = QString();
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auto newCursor = -1;
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const auto oldCursor = nowCursor;
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const auto oldLength = now.size();
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auto accumulated = 0;
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auto limit = 0;
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for (; limit != oldLength; ++limit) {
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if (now[limit].isDigit()) {
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accumulated *= 10;
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accumulated += (now[limit].unicode() - '0');
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if (accumulated > _maxValue || limit == _maxDigits) {
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break;
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}
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}
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}
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for (auto i = 0; i != limit;) {
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if (now[i].isDigit()) {
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newText += now[i];
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}
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if (++i == oldCursor) {
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newCursor = newText.size();
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}
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}
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if (newCursor < 0) {
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newCursor = newText.size();
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}
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if (newText != now) {
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now = newText;
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setText(now);
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startPlaceholderAnimation();
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}
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if (newCursor != nowCursor) {
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nowCursor = newCursor;
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setCursorPosition(nowCursor);
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}
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if (accumulated > _maxValue
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|| (limit == _maxDigits && oldLength > _maxDigits)) {
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if (oldCursor > limit) {
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_putNext.fire('0' + (accumulated % 10));
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} else {
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_putNext.fire(0);
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}
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}
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}
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} // namespace Ui
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