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Merge pull request #1785 from MerryMage/mp-dpi

Microprofile: DPI-aware drawing
This commit is contained in:
bunnei 2016-05-18 18:03:59 -04:00
commit d895bc1543
1 changed files with 12 additions and 4 deletions

View File

@ -151,6 +151,8 @@ private:
/// This timer is used to redraw the widget's contents continuously. To save resources, it only
/// runs while the widget is visible.
QTimer update_timer;
/// Scale the coordinate system appropriately when physical DPI != logical DPI.
qreal x_scale, y_scale;
};
#endif
@ -220,11 +222,17 @@ MicroProfileWidget::MicroProfileWidget(QWidget* parent) : QWidget(parent) {
MicroProfileInitUI();
connect(&update_timer, SIGNAL(timeout()), SLOT(update()));
QPainter painter(this);
x_scale = qreal(painter.device()->physicalDpiX()) / qreal(painter.device()->logicalDpiX());
y_scale = qreal(painter.device()->physicalDpiY()) / qreal(painter.device()->logicalDpiY());
}
void MicroProfileWidget::paintEvent(QPaintEvent* ev) {
QPainter painter(this);
painter.scale(x_scale, y_scale);
painter.setBackground(Qt::black);
painter.eraseRect(rect());
@ -248,24 +256,24 @@ void MicroProfileWidget::hideEvent(QHideEvent* ev) {
}
void MicroProfileWidget::mouseMoveEvent(QMouseEvent* ev) {
MicroProfileMousePosition(ev->x(), ev->y(), 0);
MicroProfileMousePosition(ev->x() / x_scale, ev->y() / y_scale, 0);
ev->accept();
}
void MicroProfileWidget::mousePressEvent(QMouseEvent* ev) {
MicroProfileMousePosition(ev->x(), ev->y(), 0);
MicroProfileMousePosition(ev->x() / x_scale, ev->y() / y_scale, 0);
MicroProfileMouseButton(ev->buttons() & Qt::LeftButton, ev->buttons() & Qt::RightButton);
ev->accept();
}
void MicroProfileWidget::mouseReleaseEvent(QMouseEvent* ev) {
MicroProfileMousePosition(ev->x(), ev->y(), 0);
MicroProfileMousePosition(ev->x() / x_scale, ev->y() / y_scale, 0);
MicroProfileMouseButton(ev->buttons() & Qt::LeftButton, ev->buttons() & Qt::RightButton);
ev->accept();
}
void MicroProfileWidget::wheelEvent(QWheelEvent* ev) {
MicroProfileMousePosition(ev->x(), ev->y(), ev->delta() / 120);
MicroProfileMousePosition(ev->x() / x_scale, ev->y() / y_scale, ev->delta() / 120);
ev->accept();
}