openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#include "tools/cabana/chart/tiplabel.h"
#include <QApplication>
#include <QStylePainter>
#include <QToolTip>
#include "tools/cabana/settings.h"
TipLabel::TipLabel(QWidget *parent) : QLabel(parent, Qt::ToolTip | Qt::FramelessWindowHint) {
setForegroundRole(QPalette::ToolTipText);
setBackgroundRole(QPalette::ToolTipBase);
auto palette = QToolTip::palette();
if (settings.theme != DARK_THEME) {
palette.setColor(QPalette::ToolTipBase, QApplication::palette().color(QPalette::Base));
palette.setColor(QPalette::ToolTipText, QRgb(0x404044)); // same color as chart label brush
}
setPalette(palette);
ensurePolished();
setMargin(1 + style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, nullptr, this));
setAttribute(Qt::WA_ShowWithoutActivating);
setTextFormat(Qt::RichText);
setVisible(false);
}
void TipLabel::showText(const QPoint &pt, const QString &text, int right_edge) {
setText(text);
if (!text.isEmpty()) {
QSize extra(1, 1);
resize(sizeHint() + extra);
QPoint tip_pos(pt.x() + 12, pt.y());
if (tip_pos.x() + size().width() >= right_edge) {
tip_pos.rx() = pt.x() - size().width() - 12;
}
move(tip_pos);
}
setVisible(!text.isEmpty());
}
void TipLabel::paintEvent(QPaintEvent *ev) {
QStylePainter p(this);
QStyleOptionFrame opt;
opt.init(this);
p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);
p.end();
QLabel::paintEvent(ev);
}