Make error handling generic improve math error detail

[pulseview.git] / pv / views / trace / trace.cpp

diff --git a/pv/views/trace/trace.cpp b/pv/views/trace/trace.cpp
index ecc1aecc901a8adb9599c34e34f69ee896399727..1f77598d609c04235dfb3d0e3282b693edf6ee32 100644 (file)
--- a/pv/views/trace/trace.cpp
+++ b/pv/views/trace/trace.cpp
@@ -49,6 +49,7 @@ const int Trace::LabelHitPadding = 2;
 
 const QColor Trace::BrightGrayBGColor = QColor(0, 0, 0, 10 * 255 / 100);
 const QColor Trace::DarkGrayBGColor = QColor(0, 0, 0, 15 * 255 / 100);
+const QColor Trace::ErrorBgColor = QColor(0xEF, 0x29, 0x29);
 
 Trace::Trace(shared_ptr<data::SignalBase> signal) :
        base_(signal),
@@ -62,6 +63,8 @@ Trace::Trace(shared_ptr<data::SignalBase> signal) :
                this, SLOT(on_name_changed(const QString&)));
        connect(signal.get(), SIGNAL(color_changed(const QColor&)),
                this, SLOT(on_color_changed(const QColor&)));
+       connect(signal.get(), SIGNAL(error_message_changed(const QString&)),
+               this, SLOT(on_error_message_changed(const QString&)));
 
        GlobalSettings::add_change_handler(this);
 
@@ -175,6 +178,26 @@ void Trace::paint_label(QPainter &p, const QRect &rect, bool hover)
                Qt::AlignCenter | Qt::AlignVCenter, base_->name());
 }
 
+void Trace::paint_error(QPainter &p, const ViewItemPaintParams &pp)
+{
+       const QString message = base_->get_error_message();
+
+       const int y = get_visual_y();
+
+       p.setPen(ErrorBgColor.darker());
+       p.setBrush(ErrorBgColor);
+
+       const QRectF bounding_rect = QRectF(pp.left(), INT_MIN / 2 + y, pp.right(), INT_MAX);
+
+       const QRectF text_rect = p.boundingRect(bounding_rect, Qt::AlignCenter, message);
+       const qreal r = text_rect.height() / 4;
+
+       p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r, Qt::AbsoluteSize);
+
+       p.setPen(Qt::black);
+       p.drawText(text_rect, message);
+}
+
 QMenu* Trace::create_header_context_menu(QWidget *parent)
 {
        QMenu *const menu = ViewItem::create_header_context_menu(parent);
@@ -402,6 +425,14 @@ void Trace::on_color_changed(const QColor &color)
                owner_->row_item_appearance_changed(true, true);
 }
 
+void Trace::on_error_message_changed(const QString &msg)
+{
+       (void)msg;
+
+       if (owner_)
+               owner_->row_item_appearance_changed(false, true);
+}
+
 void Trace::on_popup_closed()
 {
        popup_ = nullptr;