Cabana: auto theme, detect from system. (#26563)

* auto theme

* cleanup

* get font color from ForegroundRole

* fix label color

* add padding for header

* smaller warning icon

* fix bg of binary view

* hightlight after init
old-commit-hash: 4662f1e0be

tools/cabana/binaryview.cc

@@ -1,6 +1,5 @@
 #include "tools/cabana/binaryview.h"
 
-#include <QApplication>
 #include <QFontDatabase>
 #include <QHeaderView>
 #include <QMouseEvent>
@@ -74,14 +73,18 @@ void BinaryView::mousePressEvent(QMouseEvent *event) {
   event->accept();
 }
 
-void BinaryView::mouseMoveEvent(QMouseEvent *event) {
-  if (auto index = indexAt(event->pos()); index.isValid()) {
+void BinaryView::highlightPosition(const QPoint &pos) {
+  if (auto index = indexAt(viewport()->mapFromGlobal(pos)); index.isValid()) {
     auto item = (BinaryViewModel::Item *)index.internalPointer();
     const Signal *sig = item->sigs.isEmpty() ? nullptr : item->sigs.back();
     highlight(sig);
-    sig ? QToolTip::showText(event->globalPos(), sig->name.c_str(), this, rect())
+    sig ? QToolTip::showText(pos, sig->name.c_str(), this, rect())
         : QToolTip::hideText();
   }
+}
+
+void BinaryView::mouseMoveEvent(QMouseEvent *event) {
+  highlightPosition(event->globalPos());
   QTableView::mouseMoveEvent(event);
 }
 
@@ -116,6 +119,7 @@ void BinaryView::setMessage(const QString &message_id) {
   anchor_index = QModelIndex();
   resize_sig = nullptr;
   hovered_sig = nullptr;
+  highlightPosition(QCursor::pos());
   updateState();
 }
 
@@ -232,19 +236,18 @@ void BinaryItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &op
   BinaryView *bin_view = (BinaryView *)parent();
   painter->save();
 
-  // background
-  if (option.state & QStyle::State_Selected) {
+  if (index.column() == 8) {
+    painter->setFont(hex_font);
+  } else if (option.state & QStyle::State_Selected) {
     painter->fillRect(option.rect, selection_color);
-  } else if (!bin_view->selectionModel()->hasSelection() || !item->sigs.contains(bin_view->resize_sig)) {
+    painter->setPen(QApplication::style()->standardPalette().color(QPalette::BrightText));
+  } else if (!item->sigs.isEmpty() && (!bin_view->selectionModel()->hasSelection() || !item->sigs.contains(bin_view->resize_sig))) {
     painter->fillRect(option.rect, item->bg_color);
+    painter->setPen(item->sigs.contains(bin_view->hovered_sig)
+                        ? QApplication::style()->standardPalette().color(QPalette::BrightText)
+                        : Qt::black);
   }
 
-  // text
-  if (index.column() == 8) {  // hex column
-    painter->setFont(hex_font);
-  } else if (option.state & QStyle::State_Selected || (!bin_view->resize_sig && item->sigs.contains(bin_view->hovered_sig))) {
-    painter->setPen(Qt::white);
-  }
   painter->drawText(option.rect, Qt::AlignCenter, item->val);
   if (item->is_msb || item->is_lsb) {
     painter->setFont(small_font);

tools/cabana/binaryview.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <QApplication>
 #include <QList>
 #include <QSet>
 #include <QStyledItemDelegate>
@@ -41,7 +42,7 @@ public:
   }
 
   struct Item {
-    QColor bg_color = QColor(Qt::white);
+    QColor bg_color = QApplication::style()->standardPalette().color(QPalette::Base);
     bool is_msb = false;
     bool is_lsb = false;
     QString val = "0";
@@ -79,6 +80,7 @@ private:
   void mouseMoveEvent(QMouseEvent *event) override;
   void mouseReleaseEvent(QMouseEvent *event) override;
   void leaveEvent(QEvent *event) override;
+  void highlightPosition(const QPoint &pt);
 
   QModelIndex anchor_index;
   BinaryViewModel *model;

tools/cabana/cabana.cc

@@ -1,6 +1,5 @@
 #include <QApplication>
 #include <QCommandLineParser>
-#include <QStyleFactory>
 
 #include "selfdrive/ui/qt/util.h"
 #include "tools/cabana/mainwin.h"
@@ -8,7 +7,6 @@
 int main(int argc, char *argv[]) {
   initApp(argc, argv);
   QApplication app(argc, argv);
-  app.setStyle(QStyleFactory::create("Fusion"));
 
   QCommandLineParser cmd_parser;
   cmd_parser.addHelpOption();

tools/cabana/chartswidget.cc

@@ -40,6 +40,8 @@ ChartsWidget::ChartsWidget(QWidget *parent) : QWidget(parent) {
 
   main_layout->addWidget(charts_scroll);
 
+  use_dark_theme = palette().color(QPalette::WindowText).value() > palette().color(QPalette::Background).value();
+
   QObject::connect(dbc(), &DBCManager::DBCFileChanged, this, &ChartsWidget::removeAll);
   QObject::connect(can, &CANMessages::eventsMerged, this, &ChartsWidget::eventsMerged);
   QObject::connect(can, &CANMessages::updated, this, &ChartsWidget::updateState);
@@ -125,6 +127,7 @@ void ChartsWidget::showChart(const QString &id, const Signal *sig, bool show, bo
     ChartView *chart = merge && charts.size() > 0 ? charts.back() : nullptr;
     if (!chart) {
       chart = new ChartView(this);
+      chart->chart()->setTheme(use_dark_theme ? QChart::QChart::ChartThemeDark : QChart::ChartThemeLight);
       chart->setEventsRange(display_range);
       auto range = is_zoomed ? zoomed_range : display_range;
       chart->setDisplayRange(range.first, range.second);
@@ -288,7 +291,6 @@ void ChartView::updateTitle() {
 
 void ChartView::updateFromSettings() {
   setFixedHeight(settings.chart_height);
-  chart()->setTheme(settings.chart_theme == 0 ? QChart::ChartThemeLight : QChart::QChart::ChartThemeDark);
 }
 
 void ChartView::setEventsRange(const std::pair<double, double> &range) {

tools/cabana/chartswidget.h

@@ -112,4 +112,5 @@ private:
   std::pair<double, double> event_range;
   std::pair<double, double> display_range;
   std::pair<double, double> zoomed_range;
+  bool use_dark_theme = false;
 };

tools/cabana/detailwidget.cc

@@ -25,7 +25,6 @@ DetailWidget::DetailWidget(ChartsWidget *charts, QWidget *parent) : charts(chart
   // tabbar
   tabbar = new QTabBar(this);
   tabbar->setTabsClosable(true);
-  tabbar->setDrawBase(false);
   tabbar->setUsesScrollButtons(true);
   tabbar->setAutoHide(true);
   tabbar->setContextMenuPolicy(Qt::CustomContextMenu);
@@ -57,7 +56,7 @@ DetailWidget::DetailWidget(ChartsWidget *charts, QWidget *parent) : charts(chart
   QHBoxLayout *warning_hlayout = new QHBoxLayout(warning_widget);
   warning_hlayout->setContentsMargins(0, 0, 0, 0);
   QLabel *warning_icon = new QLabel(this);
-  warning_icon->setPixmap(style()->standardPixmap(QStyle::SP_MessageBoxWarning));
+  warning_icon->setPixmap(style()->standardPixmap(QStyle::SP_MessageBoxWarning).scaledToWidth(24, Qt::SmoothTransformation));
   warning_hlayout->addWidget(warning_icon, 0, Qt::AlignTop);
   warning_label = new QLabel(this);
   warning_hlayout->addWidget(warning_label, 1, Qt::AlignLeft);

tools/cabana/historylog.cc

@@ -1,6 +1,7 @@
 #include "tools/cabana/historylog.h"
 
 #include <QFontDatabase>
+#include <QPainter>
 
 // HistoryLogModel
 
@@ -44,6 +45,8 @@ QVariant HistoryLogModel::headerData(int section, Qt::Orientation orientation, i
       return has_signal ? QString::fromStdString(get_signal(dbc_msg, section - 1).name).replace('_', ' ') : "Data";
     } else if (role == Qt::BackgroundRole && section > 0 && has_signal) {
       return QBrush(QColor(getColor(section - 1)));
+    } else if (role == Qt::ForegroundRole && section > 0 && has_signal) {
+      return QBrush(Qt::black);
     }
   }
   return {};
@@ -73,7 +76,18 @@ void HistoryLogModel::updateState() {
 QSize HeaderView::sectionSizeFromContents(int logicalIndex) const {
   const QString text = model()->headerData(logicalIndex, this->orientation(), Qt::DisplayRole).toString();
   const QRect rect = fontMetrics().boundingRect(QRect(0, 0, sectionSize(logicalIndex), 1000), defaultAlignment(), text);
-  return rect.size() + QSize{10, 5};
+  return rect.size() + QSize{10, 6};
+}
+
+void HeaderView::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const {
+  auto bg_role = model()->headerData(logicalIndex, Qt::Horizontal, Qt::BackgroundRole);
+  if (bg_role.isValid()) {
+    QPen pen(model()->headerData(logicalIndex, Qt::Horizontal, Qt::ForegroundRole).value<QBrush>(), 1);
+    painter->setPen(pen);
+    painter->fillRect(rect, bg_role.value<QBrush>());
+  }
+  QString text = model()->headerData(logicalIndex, Qt::Horizontal, Qt::DisplayRole).toString();
+  painter->drawText(rect.adjusted(5, 3, 5, 3), defaultAlignment(), text);
 }
 
 // HistoryLog
@@ -88,7 +102,6 @@ HistoryLog::HistoryLog(QWidget *parent) : QTableView(parent) {
   verticalHeader()->setVisible(false);
   setFrameShape(QFrame::NoFrame);
   setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
-  setStyleSheet("QTableView::item { border:0px; padding-left:5px; padding-right:5px; }");
 }
 
 int HistoryLog::sizeHintForColumn(int column) const {

tools/cabana/historylog.h

@@ -10,6 +10,7 @@ class HeaderView : public QHeaderView {
 public:
   HeaderView(Qt::Orientation orientation, QWidget *parent = nullptr) : QHeaderView(orientation, parent) {}
   QSize sectionSizeFromContents(int logicalIndex) const override;
+  void paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const;
 };
 
 class HistoryLogModel : public QAbstractTableModel {

tools/cabana/settings.cc

@@ -18,7 +18,6 @@ void Settings::save() {
   s.setValue("log_size", can_msg_log_size);
   s.setValue("cached_segment", cached_segment_limit);
   s.setValue("chart_height", chart_height);
-  s.setValue("chart_theme", chart_theme);
   s.setValue("max_chart_x_range", max_chart_x_range);
   s.setValue("last_dir", last_dir);
   s.setValue("splitter_state", splitter_state);
@@ -30,7 +29,6 @@ void Settings::load() {
   can_msg_log_size = s.value("log_size", 50).toInt();
   cached_segment_limit = s.value("cached_segment", 3).toInt();
   chart_height = s.value("chart_height", 200).toInt();
-  chart_theme = s.value("chart_theme", 0).toInt();
   max_chart_x_range = s.value("max_chart_x_range", 3 * 60).toInt();
   last_dir = s.value("last_dir", QDir::homePath()).toString();
   splitter_state = s.value("splitter_state").toByteArray();
@@ -72,11 +70,6 @@ SettingsDlg::SettingsDlg(QWidget *parent) : QDialog(parent) {
   chart_height->setValue(settings.chart_height);
   form_layout->addRow(tr("Chart height"), chart_height);
 
-  chart_theme = new QComboBox();
-  chart_theme->addItems({"Light", "Dark"});
-  chart_theme->setCurrentIndex(settings.chart_theme == 1 ? 1 : 0);
-  form_layout->addRow(tr("Chart theme"), chart_theme);
-
   auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
   form_layout->addRow(buttonBox);
 
@@ -90,7 +83,6 @@ void SettingsDlg::save() {
   settings.can_msg_log_size = log_size->value();
   settings.cached_segment_limit = cached_segment->value();
   settings.chart_height = chart_height->value();
-  settings.chart_theme = chart_theme->currentIndex();
   settings.max_chart_x_range = max_chart_x_range->value() * 60;
   settings.save();
   accept();

tools/cabana/settings.h

@@ -17,7 +17,6 @@ public:
   int can_msg_log_size = 50;
   int cached_segment_limit = 3;
   int chart_height = 200;
-  int chart_theme = 0;
   int max_chart_x_range = 3 * 60; // 3 minutes
   QString last_dir;
   QByteArray splitter_state;
@@ -36,7 +35,6 @@ public:
   QSpinBox *log_size ;
   QSpinBox *cached_segment;
   QSpinBox *chart_height;
-  QComboBox *chart_theme;
   QSpinBox *max_chart_x_range;
 };
 

tools/cabana/signaledit.cc

@@ -137,7 +137,7 @@ void SignalEdit::setSignal(const QString &message_id, const Signal *signal) {
   updateForm(msg_id == message_id && form->isVisible());
   msg_id = message_id;
   color_label->setText(QString::number(form_idx + 1));
-  color_label->setStyleSheet(QString("background-color:%1").arg(getColor(form_idx)));
+  color_label->setStyleSheet(QString("color:black; background-color:%2").arg(getColor(form_idx)));
   title->setText(sig->name.c_str());
   show();
 }