#include <libsigrokdecode/libsigrokdecode.h>
#endif
+#include <extdef.h>
+
#include <cassert>
#include <climits>
#include <cmath>
#include <mutex>
#include <unordered_set>
+#include <QApplication>
#include <QEvent>
+#include <QFontMetrics>
#include <QMouseEvent>
#include <QScrollBar>
#include "view.hpp"
#include "viewport.hpp"
-#include "pv/sigsession.hpp"
+#include "pv/session.hpp"
#include "pv/data/logic.hpp"
#include "pv/data/logicsnapshot.hpp"
+#include "pv/util.hpp"
using boost::shared_lock;
using boost::shared_mutex;
+
using pv::data::SignalData;
+using pv::util::format_time;
+
using std::back_inserter;
using std::deque;
using std::dynamic_pointer_cast;
const int View::MaxScrollValue = INT_MAX / 2;
+const int View::ScaleUnits[3] = {1, 2, 5};
+
const QColor View::CursorAreaColour(220, 231, 243);
const QSizeF View::LabelPadding(4, 0);
-View::View(SigSession &session, QWidget *parent) :
+View::View(Session &session, QWidget *parent) :
QAbstractScrollArea(parent),
session_(session),
viewport_(new Viewport(*this)),
offset_(0),
v_offset_(0),
updating_scroll_(false),
+ tick_period_(0.0),
+ tick_prefix_(0),
show_cursors_(false),
cursors_(*this),
hover_point_(-1, -1)
// make sure the transparent widgets are on the top
cursorheader_->raise();
header_->raise();
+
+ // Update the zoom state
+ calculate_tick_spacing();
}
-SigSession& View::session()
+Session& View::session()
{
return session_;
}
-const SigSession& View::session() const
+const Session& View::session() const
{
return session_;
}
return 0;
}
+unsigned int View::tick_prefix() const
+{
+ return tick_prefix_;
+}
+
+double View::tick_period() const
+{
+ return tick_period_;
+}
+
void View::zoom(double steps)
{
zoom(steps, viewport_->width() / 2);
scale_ = scale;
offset_ = offset;
+ calculate_tick_spacing();
+
update_scroll();
ruler_->update();
cursorheader_->update();
set_scale_offset(new_scale, new_offset);
}
+void View::calculate_tick_spacing()
+{
+ const double SpacingIncrement = 32.0f;
+ const double MinValueSpacing = 32.0f;
+
+ double min_width = SpacingIncrement, typical_width;
+
+ QFontMetrics m(QApplication::font());
+
+ do {
+ const double min_period = scale_ * min_width;
+
+ const int order = (int)floorf(log10f(min_period));
+ const double order_decimal = pow(10.0, order);
+
+ unsigned int unit = 0;
+
+ do {
+ tick_period_ = order_decimal * ScaleUnits[unit++];
+ } while (tick_period_ < min_period &&
+ unit < countof(ScaleUnits));
+
+ tick_prefix_ = (order - pv::util::FirstSIPrefixPower) / 3;
+
+ typical_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
+ Qt::AlignLeft | Qt::AlignTop,
+ format_time(offset_, tick_prefix_)).width() +
+ MinValueSpacing;
+
+ min_width += SpacingIncrement;
+
+ } while(typical_width > tick_period_ / scale_);
+}
+
void View::update_scroll()
{
assert(viewport_);
get_scroll_layout(length, offset);
length = max(length - areaSize.width(), 0.0);
+ int major_tick_distance = tick_period_ / scale_;
+
horizontalScrollBar()->setPageStep(areaSize.width() / 2);
+ horizontalScrollBar()->setSingleStep(major_tick_distance);
updating_scroll_ = true;