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// SPDX-FileCopyrightText: 2021 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later
#include <QColor>
#include <QCoreApplication>
#include <QEvent>
#include <QPainter>
#include "ToggleButton.h"
void
Toggle::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
}
Toggle::Toggle(QWidget *parent)
: QAbstractButton{parent}
{
init();
connect(this, &QAbstractButton::toggled, this, &Toggle::setState);
}
void
Toggle::setState(bool isEnabled)
{
setChecked(isEnabled);
thumb_->setShift(isEnabled ? Position::Left : Position::Right);
setupProperties();
}
void
Toggle::init()
{
track_ = new ToggleTrack(this);
thumb_ = new ToggleThumb(this);
setCursor(QCursor(Qt::PointingHandCursor));
setCheckable(true);
setChecked(false);
setState(false);
setupProperties();
QCoreApplication::processEvents();
}
void
Toggle::setupProperties()
{
if (isEnabled()) {
Position position = thumb_->shift();
thumb_->setThumbColor(trackColor());
if (position == Position::Left)
track_->setTrackColor(activeColor());
else if (position == Position::Right)
track_->setTrackColor(inactiveColor());
}
update();
}
void
Toggle::setDisabledColor(const QColor &color)
{
disabledColor_ = color;
setupProperties();
}
void
Toggle::setActiveColor(const QColor &color)
{
activeColor_ = color;
setupProperties();
}
void
Toggle::setInactiveColor(const QColor &color)
{
inactiveColor_ = color;
setupProperties();
}
void
Toggle::setTrackColor(const QColor &color)
{
trackColor_ = color;
setupProperties();
}
ToggleThumb::ToggleThumb(Toggle *parent)
: QWidget{parent}
, toggle_{parent}
, position_{Position::Right}
, offset_{0}
{
parent->installEventFilter(this);
}
void
ToggleThumb::setShift(Position position)
{
if (position_ != position) {
position_ = position;
updateOffset();
}
}
bool
ToggleThumb::eventFilter(QObject *obj, QEvent *event)
{
const QEvent::Type type = event->type();
if (QEvent::Resize == type || QEvent::Move == type) {
setGeometry(toggle_->rect().adjusted(8, 8, -8, -8));
updateOffset();
}
return QWidget::eventFilter(obj, event);
}
void
ToggleThumb::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
QBrush brush;
brush.setStyle(Qt::SolidPattern);
brush.setColor(toggle_->isEnabled() ? thumbColor_ : Qt::white);
painter.setBrush(brush);
painter.setPen(Qt::NoPen);
int s;
QRectF r;
s = height() - 10;
r = QRectF(5 + offset_, 5, s, s);
painter.drawEllipse(r);
if (!toggle_->isEnabled()) {
brush.setColor(toggle_->disabledColor());
painter.setBrush(brush);
painter.drawEllipse(r);
}
}
void
ToggleThumb::updateOffset()
{
const QSize s(size());
offset_ = position_ == Position::Left ? static_cast<qreal>(s.width() - s.height()) : 0;
update();
}
ToggleTrack::ToggleTrack(Toggle *parent)
: QWidget{parent}
, toggle_{parent}
{
Q_ASSERT(parent);
parent->installEventFilter(this);
}
void
ToggleTrack::setTrackColor(const QColor &color)
{
trackColor_ = color;
update();
}
bool
ToggleTrack::eventFilter(QObject *obj, QEvent *event)
{
const QEvent::Type type = event->type();
if (QEvent::Resize == type || QEvent::Move == type) {
setGeometry(toggle_->rect());
}
return QWidget::eventFilter(obj, event);
}
void
ToggleTrack::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
QBrush brush;
if (toggle_->isEnabled()) {
brush.setColor(trackColor_);
painter.setOpacity(0.8);
} else {
brush.setColor(toggle_->disabledColor());
painter.setOpacity(0.6);
}
brush.setStyle(Qt::SolidPattern);
painter.setBrush(brush);
painter.setPen(Qt::NoPen);
const int h = height() / 2;
const QRect r(0, h / 2, width(), h);
painter.drawRoundedRect(r.adjusted(14, 4, -14, -4), h / 2 - 4, h / 2 - 4);
}
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