Added pv::view::View::normalize_layout to normalize out-of-bounds drags

[pulseview.git] / pv / view / view.cpp

diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index 7d3dc7f628a73b9bd5e4be03d6c8a6e45e33dfb2..c5465ff3c6ba19eef1cd68ba2082ba40d7f413c4 100644 (file)
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -30,6 +30,7 @@
 
 #include "header.h"
 #include "ruler.h"
+#include "signal.h"
 #include "view.h"
 #include "viewport.h"
 
@@ -51,10 +52,14 @@ const int View::RulerHeight = 30;
 
 const int View::MaxScrollValue = INT_MAX / 2;
 
-const int View::SignalHeight = 50;
+const int View::SignalHeight = 30;
+const int View::SignalMargin = 10;
+const int View::SignalSnapGridSize = 10;
 
 const QColor View::CursorAreaColour(220, 231, 243);
 
+const QSizeF View::LabelPadding(4, 0);
+
 View::View(SigSession &session, QWidget *parent) :
        QAbstractScrollArea(parent),
        _session(session),
@@ -77,6 +82,14 @@ View::View(SigSession &session, QWidget *parent) :
        connect(&_session, SIGNAL(data_updated()),
                this, SLOT(data_updated()));
 
+       connect(&_cursors.first, SIGNAL(time_changed()),
+               this, SLOT(marker_time_changed()));
+       connect(&_cursors.second, SIGNAL(time_changed()),
+               this, SLOT(marker_time_changed()));
+
+       connect(_header, SIGNAL(signals_moved()),
+               this, SLOT(on_signals_moved()));
+
        setViewportMargins(LabelMarginWidth, RulerHeight, 0, 0);
        setViewport(_viewport);
 
@@ -155,6 +168,22 @@ const QPoint& View::hover_point() const
        return _hover_point;
 }
 
+void View::normalize_layout()
+{
+       vector< shared_ptr<Signal> > &sigs = _session.get_signals();
+
+       int v_min = INT_MAX;
+       BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
+               v_min = min(s->get_v_offset(), v_min);
+
+       const int delta = -min(v_min, 0);
+       BOOST_FOREACH(shared_ptr<Signal> s, sigs)
+               s->set_v_offset(s->get_v_offset() + delta);
+
+       verticalScrollBar()->setSliderPosition(_v_offset + delta);
+       v_scroll_value_changed(verticalScrollBar()->sliderPosition());
+}
+
 void View::get_scroll_layout(double &length, double &offset) const
 {
        const shared_ptr<SignalData> sig_data = _session.get_data();
@@ -190,7 +219,20 @@ void View::update_scroll()
        // Set the vertical scrollbar
        verticalScrollBar()->setPageStep(areaSize.height());
        verticalScrollBar()->setRange(0,
-               _viewport->get_total_height() - areaSize.height());
+               _viewport->get_total_height() + SignalMargin -
+               areaSize.height());
+}
+
+void View::reset_signal_layout()
+{
+       int offset = SignalMargin;
+       vector< shared_ptr<Signal> > &sigs = _session.get_signals();
+       BOOST_FOREACH(shared_ptr<Signal> s, sigs) {
+               s->set_v_offset(offset);
+               offset += SignalHeight + 2 * SignalMargin;
+       }
+
+       normalize_layout();
 }
 
 bool View::eventFilter(QObject *object, QEvent *event)
@@ -284,6 +326,21 @@ void View::data_updated()
 
        // Repaint the view
        _viewport->update();
+
+       /// @todo: Call this only once when the signals are first created.
+       reset_signal_layout();
+}
+
+void View::marker_time_changed()
+{
+       _ruler->update();
+       _viewport->update();
+}
+
+void View::on_signals_moved()
+{
+       update_scroll();
+       signals_moved();
 }
 
 } // namespace view