vasilito
cf12defd28
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
/*
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SPDX-FileCopyrightText: 2019 Harald Sitter <sitter@kde.org>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#include "kbusyindicatorwidget.h"
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#include <QApplication>
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#include <QIcon>
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#include <QPainter>
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#include <QResizeEvent>
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#include <QStyle>
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#include <QVariantAnimation>
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class KBusyIndicatorWidgetPrivate
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{
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public:
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KBusyIndicatorWidgetPrivate(KBusyIndicatorWidget *parent)
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: q(parent)
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{
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animation.setLoopCount(-1);
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animation.setDuration(2000);
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animation.setStartValue(0);
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animation.setEndValue(360);
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QObject::connect(&animation, &QVariantAnimation::valueChanged, q, [this](QVariant value) {
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rotation = value.toReal();
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q->update(); // repaint new rotation
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});
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}
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KBusyIndicatorWidget *const q;
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QVariantAnimation animation;
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QIcon icon = QIcon::fromTheme(QStringLiteral("view-refresh"));
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qreal rotation = 0;
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QPointF paintCenter;
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};
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KBusyIndicatorWidget::KBusyIndicatorWidget(QWidget *parent)
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: QWidget(parent)
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, d(new KBusyIndicatorWidgetPrivate(this))
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{
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}
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KBusyIndicatorWidget::~KBusyIndicatorWidget() = default;
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QSize KBusyIndicatorWidget::minimumSizeHint() const
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{
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const auto extent = QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize);
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return QSize(extent, extent);
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}
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void KBusyIndicatorWidget::start()
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{
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d->animation.start();
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}
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void KBusyIndicatorWidget::stop()
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{
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if (d->animation.state() == QAbstractAnimation::Running) // avoid warning if never started yet
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d->animation.pause();
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}
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void KBusyIndicatorWidget::showEvent(QShowEvent *event)
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{
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QWidget::showEvent(event);
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start();
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}
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void KBusyIndicatorWidget::hideEvent(QHideEvent *event)
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{
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QWidget::hideEvent(event);
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stop();
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}
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void KBusyIndicatorWidget::resizeEvent(QResizeEvent *event)
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{
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QWidget::resizeEvent(event);
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d->paintCenter = QPointF(event->size().width() / 2.0, //
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event->size().height() / 2.0);
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}
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void KBusyIndicatorWidget::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::SmoothPixmapTransform);
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// Rotate around the center and then reset back to origin for icon painting.
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painter.translate(d->paintCenter);
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painter.rotate(d->rotation);
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painter.translate(-d->paintCenter);
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d->icon.paint(&painter, rect());
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}
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bool KBusyIndicatorWidget::event(QEvent *event)
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{
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// Only overridden to be flexible WRT binary compatible in the future.
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// Overriding later has potential to change the call going through
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// the vtable or not.
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return QWidget::event(event);
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}
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#include "moc_kbusyindicatorwidget.cpp"
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