Move trace view files

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

diff --git a/pv/views/trace/cursor.cpp b/pv/views/trace/cursor.cpp
new file mode 100644 (file)
index 0000000..4fb4b65
--- /dev/null
+++ b/pv/views/trace/cursor.cpp
@@ -0,0 +1,101 @@
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cursor.hpp"
+
+#include "pv/util.hpp"
+#include "ruler.hpp"
+#include "view.hpp"
+
+#include <QApplication>
+#include <QBrush>
+#include <QPainter>
+#include <QPointF>
+#include <QRect>
+#include <QRectF>
+
+#include <cassert>
+#include <cstdio>
+#include <limits>
+
+using std::abs; // Force usage of std::abs() instead of C's abs().
+using std::shared_ptr;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+const QColor Cursor::FillColour(52, 101, 164);
+
+Cursor::Cursor(View &view, double time) :
+       TimeMarker(view, FillColour, time)
+{
+}
+
+bool Cursor::enabled() const
+{
+       return view_.cursors_shown();
+}
+
+QString Cursor::get_text() const
+{
+       const shared_ptr<Cursor> other = get_other_cursor();
+       const pv::util::Timestamp& diff = abs(time_ - other->time_);
+
+       return Ruler::format_time_with_distance(
+               diff, time_, view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
+}
+
+QRectF Cursor::label_rect(const QRectF &rect) const
+{
+       const shared_ptr<Cursor> other(get_other_cursor());
+       assert(other);
+
+       const float x = get_x();
+
+       QFontMetrics m(QApplication::font());
+       QSize text_size = m.boundingRect(get_text()).size();
+
+       const QSizeF label_size(
+               text_size.width() + LabelPadding.width() * 2,
+               text_size.height() + LabelPadding.height() * 2);
+       const float top = rect.height() - label_size.height() -
+               TimeMarker::ArrowSize - 0.5f;
+       const float height = label_size.height();
+
+       const pv::util::Timestamp& other_time = other->time();
+
+       if (time_ > other_time ||
+               (abs(time_ - other_time).is_zero() && this > other.get()))
+               return QRectF(x, top, label_size.width(), height);
+       else
+               return QRectF(x - label_size.width(), top, label_size.width(), height);
+}
+
+shared_ptr<Cursor> Cursor::get_other_cursor() const
+{
+       const shared_ptr<CursorPair> cursors(view_.cursors());
+       assert(cursors);
+       return (cursors->first().get() == this) ?
+               cursors->second() : cursors->first();
+}
+
+} // namespace trace
+} // namespace views
+} // namespace pv