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Qt: Implement relative mouse mode

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This commit is contained in:
Connor McLaughlin
2020-12-27 14:08:13 +10:00
parent 114d4a2c1d
commit ca42d027ac
13 changed files with 116 additions and 8 deletions
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54
src/duckstation-qt/qtdisplaywidget.cpp
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@ -92,6 +92,29 @@ std::optional<WindowInfo> QtDisplayWidget::getWindowInfo() const
return wi;
}
void QtDisplayWidget::setRelativeMode(bool enabled)
{
if (m_relative_mouse_enabled == enabled)
return;
if (enabled)
{
m_relative_mouse_start_position = QCursor::pos();
const QPoint center_pos = mapToGlobal(QPoint(width() / 2, height() / 2));
QCursor::setPos(center_pos);
m_relative_mouse_last_position = center_pos;
grabMouse();
}
else
{
QCursor::setPos(m_relative_mouse_start_position);
releaseMouse();
}
m_relative_mouse_enabled = enabled;
}
QPaintEngine* QtDisplayWidget::paintEngine() const
{
return nullptr;
@ -113,10 +136,35 @@ bool QtDisplayWidget::event(QEvent* event)
case QEvent::MouseMove:
{
const qreal dpr = devicePixelRatioFromScreen();
const QMouseEvent* mouse_event = static_cast<QMouseEvent*>(event);
emit windowMouseMoveEvent(static_cast<int>(static_cast<double>(mouse_event->x()) * dpr),
static_cast<int>(static_cast<double>(mouse_event->y()) * dpr));
if (!m_relative_mouse_enabled)
{
const qreal dpr = devicePixelRatioFromScreen();
const int scaled_x = static_cast<int>(static_cast<qreal>(mouse_event->x()) * dpr);
const int scaled_y = static_cast<int>(static_cast<qreal>(mouse_event->y()) * dpr);
windowMouseMoveEvent(scaled_x, scaled_y);
}
else
{
const QPoint center_pos = mapToGlobal(QPoint((width() + 1) / 2, (height() + 1) / 2));
const QPoint mouse_pos = mapToGlobal(mouse_event->pos());
const int dx = mouse_pos.x() - center_pos.x();
const int dy = mouse_pos.y() - center_pos.y();
m_relative_mouse_last_position.setX(m_relative_mouse_last_position.x() + dx);
m_relative_mouse_last_position.setY(m_relative_mouse_last_position.y() + dy);
windowMouseMoveEvent(m_relative_mouse_last_position.x(), m_relative_mouse_last_position.y());
QCursor::setPos(center_pos);
#if 0
qCritical() << "center" << center_pos.x() << "," << center_pos.y();
qCritical() << "mouse" << mouse_pos.x() << "," << mouse_pos.y();
qCritical() << "dxdy" << dx << "," << dy;
#endif
}
return true;
}