mirror of
https://github.com/WarmUpTill/SceneSwitcher.git
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1d7ce510f7
Simple switch toogle button widget based on https://github.com/KDAB/kdabtv/blob/master/Styling-Qt-Widgets/toggleswitch.h
103 lines
2.2 KiB
C++
103 lines
2.2 KiB
C++
#include "switch-button.hpp"
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#include <QMouseEvent>
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#include <QPainter>
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#include <QPalette>
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namespace advss {
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static const int s_height = 20;
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static const int s_innerMargin = 4;
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static const int s_handleSize = s_height - s_innerMargin * 2;
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static const int s_width = s_handleSize * 2 + s_innerMargin * 2;
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SwitchButton::SwitchButton(QWidget *parent) : QWidget{parent}
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{
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setSizePolicy({QSizePolicy::Fixed, QSizePolicy::Fixed});
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setFocusPolicy(Qt::TabFocus);
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setAttribute(Qt::WA_Hover);
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}
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void SwitchButton::setChecked(bool checked)
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{
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if (_checked == checked) {
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return;
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}
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_checked = checked;
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emit toggled(checked);
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update();
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}
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bool SwitchButton::isChecked() const
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{
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return _checked;
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}
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void SwitchButton::toggle()
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{
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setChecked(!_checked);
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}
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QSize SwitchButton::sizeHint() const
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{
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return QSize(s_width, s_height);
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}
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void SwitchButton::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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QPalette pal = palette();
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if (!isEnabled()) {
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painter.setPen(pal.color(QPalette::Midlight));
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painter.setOpacity(0.5);
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} else if (_mouseDown) {
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painter.setPen(pal.color(QPalette::Light));
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} else if (underMouse() || hasFocus()) {
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painter.setPen(QPen(pal.brush(QPalette::Highlight), 1));
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} else {
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painter.setPen(pal.color(QPalette::Midlight));
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}
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if (_checked) {
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painter.setBrush(pal.color(QPalette::Button));
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}
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const qreal radius = height() / 2;
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painter.drawRoundedRect(QRectF(rect()).adjusted(0.5, 0.5, -0.5, -0.5),
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radius, radius);
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// Now draw the handle
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QRect valueRect = rect().adjusted(s_innerMargin, s_innerMargin,
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-s_innerMargin, -s_innerMargin);
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valueRect.setWidth(valueRect.height());
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if (_checked) {
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valueRect.moveLeft(width() / 2);
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}
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painter.setBrush(pal.color(QPalette::Base));
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painter.drawEllipse(valueRect);
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}
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void SwitchButton::mousePressEvent(QMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton) {
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_mouseDown = true;
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} else {
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event->ignore();
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}
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}
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void SwitchButton::mouseReleaseEvent(QMouseEvent *event)
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{
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if (event->button() == Qt::LeftButton && _mouseDown) {
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_mouseDown = false;
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toggle();
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emit checked(_checked);
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} else {
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event->ignore();
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}
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}
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} // namespace advss
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