Add segment selector UI + helpers

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

diff --git a/pv/views/trace/standardbar.cpp b/pv/views/trace/standardbar.cpp
index bc2c3ba8a3cb9380710eb7462d51663a9987eca8..fa04c8e2318bf40e63f896abc8b345509e7ecbc2 100644 (file)
--- a/pv/views/trace/standardbar.cpp
+++ b/pv/views/trace/standardbar.cpp
@@ -42,7 +42,8 @@ StandardBar::StandardBar(Session &session, QWidget *parent,
        action_view_zoom_out_(new QAction(this)),
        action_view_zoom_fit_(new QAction(this)),
        action_view_zoom_one_to_one_(new QAction(this)),
-       action_view_show_cursors_(new QAction(this))
+       action_view_show_cursors_(new QAction(this)),
+       segment_selector_(new QSpinBox(this))
 {
        setObjectName(QString::fromUtf8("StandardBar"));
 
@@ -84,6 +85,10 @@ StandardBar::StandardBar(Session &session, QWidget *parent,
                this, SLOT(on_actionViewShowCursors_triggered()));
        action_view_show_cursors_->setText(tr("Show &Cursors"));
 
+       segment_selector_->setMinimum(1);
+       connect(&session_, SIGNAL(frame_ended()),
+               this, SLOT(on_segment_added()));
+
        connect(view_, SIGNAL(always_zoom_to_fit_changed(bool)),
                this, SLOT(on_always_zoom_to_fit_changed(bool)));
 
@@ -105,6 +110,18 @@ void StandardBar::add_toolbar_widgets()
        addAction(action_view_zoom_one_to_one_);
        addSeparator();
        addAction(action_view_show_cursors_);
+       multi_segment_actions_.push_back(addSeparator());
+       multi_segment_actions_.push_back(addWidget(segment_selector_));
+       addSeparator();
+
+       // Hide the multi-segment UI until we know that there are multiple segments
+       show_multi_segment_ui(false);
+}
+
+void StandardBar::show_multi_segment_ui(const bool state)
+{
+       for (QAction* action : multi_segment_actions_)
+               action->setVisible(state);
 }
 
 QAction* StandardBar::action_view_zoom_in() const
@@ -166,6 +183,17 @@ void StandardBar::on_always_zoom_to_fit_changed(bool state)
        action_view_zoom_fit_->setChecked(state);
 }
 
+void StandardBar::on_segment_added()
+{
+       const int segment_count = session_.get_segment_count();
+
+       if (segment_count > 1) {
+               show_multi_segment_ui(true);
+               segment_selector_->setMaximum(segment_count);
+       } else
+               show_multi_segment_ui(false);
+}
+
 } // namespace trace
 } // namespace views
 } // namespace pv