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cabana: improve the performance of updating TreeView in real-time. (#27517)

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This commit is contained in:
Dean Lee
2023-03-08 02:08:33 +08:00
committed by GitHub
parent ebd25b8a7d
commit ddcafeb7dc
2 changed files with 13 additions and 6 deletions
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tools/cabana/signaledit.cc
+12 -6
View File
@@ -1,7 +1,7 @@
#include "tools/cabana/signaledit.h"
#include <QApplication>
#include <QDialogButtonBox>
#include <QGuiApplication>
#include <QHBoxLayout>
#include <QHeaderView>
#include <QMessageBox>
@@ -304,11 +304,17 @@ SignalItemDelegate::SignalItemDelegate(QObject *parent) : QStyledItemDelegate(pa
}
QSize SignalItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const {
QSize size = QStyledItemDelegate::sizeHint(option, index);
if (index.column() == 0 && !index.parent().isValid()) {
size.rwidth() = std::min(option.widget->size().width() / 2, size.width() + color_label_width + 8);
int width = option.widget->size().width() / 2;
if (index.column() == 0) {
auto text = index.data(Qt::DisplayRole).toString();
auto it = width_cache.find(text);
if (it == width_cache.end()) {
int spacing = option.widget->style()->pixelMetric(QStyle::PM_TreeViewIndentation) + color_label_width + 8;
it = width_cache.insert(text, option.fontMetrics.width(text) + spacing);
}
width = std::min(width, it.value());
}
return size;
return {width, QApplication::fontMetrics().height()};
}
void SignalItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
@@ -508,7 +514,7 @@ void SignalView::signalHovered(const Signal *sig) {
for (int i = 0; i < children.size(); ++i) {
bool highlight = children[i]->sig == sig;
if (std::exchange(children[i]->highlight, highlight) != highlight) {
emit model->dataChanged(model->index(i, 0), model->index(i, 0));
emit model->dataChanged(model->index(i, 0), model->index(i, 0), {Qt::DecorationRole});
}
}
}
tools/cabana/signaledit.h
+1
View File
@@ -85,6 +85,7 @@ public:
QValidator *name_validator, *double_validator;
QFont small_font;
const int color_label_width = 18;
mutable QHash<QString, int> width_cache;
};
class SignalView : public QFrame {