Move trace view files

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

diff --git a/pv/views/trace/cursorpair.cpp b/pv/views/trace/cursorpair.cpp
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+++ b/pv/views/trace/cursorpair.cpp
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+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2013 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 "cursorpair.hpp"
+
+#include "pv/util.hpp"
+#include "ruler.hpp"
+#include "view.hpp"
+
+#include <algorithm>
+#include <cassert>
+
+using std::max;
+using std::make_pair;
+using std::min;
+using std::shared_ptr;
+using std::pair;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+const int CursorPair::DeltaPadding = 8;
+const QColor CursorPair::ViewportFillColour(220, 231, 243);
+
+CursorPair::CursorPair(View &view) :
+       TimeItem(view),
+       first_(new Cursor(view, 0.0)),
+       second_(new Cursor(view, 1.0))
+{
+}
+
+bool CursorPair::enabled() const
+{
+       return view_.cursors_shown();
+}
+
+shared_ptr<Cursor> CursorPair::first() const
+{
+       return first_;
+}
+
+shared_ptr<Cursor> CursorPair::second() const
+{
+       return second_;
+}
+
+void CursorPair::set_time(const pv::util::Timestamp& time)
+{
+       const pv::util::Timestamp delta = second_->time() - first_->time();
+       first_->set_time(time);
+       second_->set_time(time + delta);
+}
+
+float CursorPair::get_x() const
+{
+       return (first_->get_x() + second_->get_x()) / 2.0f;
+}
+
+QPoint CursorPair::point(const QRect &rect) const
+{
+       return first_->point(rect);
+}
+
+pv::widgets::Popup* CursorPair::create_popup(QWidget *parent)
+{
+       (void)parent;
+       return nullptr;
+}
+
+QRectF CursorPair::label_rect(const QRectF &rect) const
+{
+       const QSizeF label_size(text_size_ + LabelPadding * 2);
+       const pair<float, float> offsets(get_cursor_offsets());
+       const pair<float, float> normal_offsets(
+               (offsets.first < offsets.second) ? offsets :
+               make_pair(offsets.second, offsets.first));
+
+       const float height = label_size.height();
+       const float left = max(normal_offsets.first + DeltaPadding, -height);
+       const float right = min(normal_offsets.second - DeltaPadding,
+               (float)rect.width() + height);
+
+       return QRectF(left, rect.height() - label_size.height() -
+               TimeMarker::ArrowSize - 0.5f,
+               right - left, height);
+}
+
+void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover)
+{
+       assert(first_);
+       assert(second_);
+
+       if (!enabled())
+               return;
+
+       const QColor text_colour =
+               ViewItem::select_text_colour(Cursor::FillColour);
+
+       p.setPen(text_colour);
+       compute_text_size(p);
+       QRectF delta_rect(label_rect(rect));
+
+       const int radius = delta_rect.height() / 2;
+       const QRectF text_rect(delta_rect.intersected(
+               rect).adjusted(radius, 0, -radius, 0));
+       if (text_rect.width() >= text_size_.width()) {
+               const int highlight_radius = delta_rect.height() / 2 - 2;
+
+               if (selected()) {
+                       p.setBrush(Qt::transparent);
+                       p.setPen(highlight_pen());
+                       p.drawRoundedRect(delta_rect, radius, radius);
+               }
+
+               p.setBrush(hover ? Cursor::FillColour.lighter() :
+                       Cursor::FillColour);
+               p.setPen(Cursor::FillColour.darker());
+               p.drawRoundedRect(delta_rect, radius, radius);
+
+               delta_rect.adjust(1, 1, -1, -1);
+               p.setPen(Cursor::FillColour.lighter());
+               p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius);
+
+               p.setPen(text_colour);
+               p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter,
+                       format_string());
+       }
+}
+
+void CursorPair::paint_back(QPainter &p, ViewItemPaintParams &pp)
+{
+       if (!enabled())
+               return;
+
+       p.setPen(Qt::NoPen);
+       p.setBrush(QBrush(ViewportFillColour));
+
+       const pair<float, float> offsets(get_cursor_offsets());
+       const int l = (int)max(min(
+               offsets.first, offsets.second), 0.0f);
+       const int r = (int)min(max(
+               offsets.first, offsets.second), (float)pp.width());
+
+       p.drawRect(l, pp.top(), r - l, pp.height());
+}
+
+QString CursorPair::format_string()
+{
+       const pv::util::SIPrefix prefix = view_.tick_prefix();
+       const pv::util::Timestamp diff = abs(second_->time() - first_->time());
+
+       const QString s1 = Ruler::format_time_with_distance(
+               diff, diff, prefix, view_.time_unit(), view_.tick_precision(), false);
+       const QString s2 = util::format_time_si(
+               1 / diff, pv::util::SIPrefix::unspecified, 4, "Hz", false);
+
+       return QString("%1 / %2").arg(s1).arg(s2);
+}
+
+void CursorPair::compute_text_size(QPainter &p)
+{
+       assert(first_);
+       assert(second_);
+
+       text_size_ = p.boundingRect(QRectF(), 0, format_string()).size();
+}
+
+pair<float, float> CursorPair::get_cursor_offsets() const
+{
+       assert(first_);
+       assert(second_);
+
+       return pair<float, float>(first_->get_x(), second_->get_x());
+}
+
+} // namespace trace
+} // namespace views
+} // namespace pv