Add openpilot tools

tools/cabana/chart/tiplabel.cc

@@ -0,0 +1,55 @@
+#include "tools/cabana/chart/tiplabel.h"
+
+#include <utility>
+
+#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);
+  QFont font;
+  font.setPointSizeF(8.34563465);
+  setFont(font);
+  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, QWidget *w, const QRect &rect) {
+  setText(text);
+  if (!text.isEmpty()) {
+    QSize extra(1, 1);
+    resize(sizeHint() + extra);
+    QPoint tip_pos(pt.x() + 8, rect.top() + 2);
+    if (tip_pos.x() + size().width() >= rect.right()) {
+      tip_pos.rx() = pt.x() - size().width() - 8;
+    }
+    if (rect.contains({tip_pos, size()})) {
+      move(w->mapToGlobal(tip_pos));
+      setVisible(true);
+      return;
+    }
+  }
+  setVisible(false);
+}
+
+void TipLabel::paintEvent(QPaintEvent *ev) {
+  QStylePainter p(this);
+  QStyleOptionFrame opt;
+  opt.init(this);
+  p.drawPrimitive(QStyle::PE_PanelTipLabel, opt);
+  p.end();
+  QLabel::paintEvent(ev);
+}