Implement MathSignal

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

diff --git a/pv/views/trace/mathsignal.cpp b/pv/views/trace/mathsignal.cpp
new file mode 100644 (file)
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+++ b/pv/views/trace/mathsignal.cpp
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+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2020 Soeren Apel <soeren@apelpie.net>
+ *
+ * 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 <extdef.h>
+
+#include <QComboBox>
+#include <QDebug>
+#include <QFormLayout>
+#include <QGridLayout>
+#include <QLineEdit>
+#include <QString>
+
+#include "mathsignal.hpp"
+
+#include "pv/data/signalbase.hpp"
+
+using pv::data::SignalBase;
+
+namespace pv {
+namespace views {
+namespace trace {
+
+#define MATHSIGNAL_INPUT_TIMEOUT (2000)
+
+MathSignal::MathSignal(
+       pv::Session &session,
+       shared_ptr<data::SignalBase> base) :
+       AnalogSignal(session, base),
+       math_signal_(dynamic_pointer_cast<pv::data::MathSignal>(base))
+{
+       delayed_expr_updater_.setSingleShot(true);
+       delayed_expr_updater_.setInterval(MATHSIGNAL_INPUT_TIMEOUT);
+       connect(&delayed_expr_updater_, &QTimer::timeout,
+               this, [this]() { math_signal_->set_expression(expression_edit_->text()); });
+}
+
+void MathSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
+{
+       AnalogSignal::populate_popup_form(parent, form);
+
+       expression_edit_ = new QLineEdit();
+       expression_edit_->setText(math_signal_->get_expression());
+       connect(expression_edit_, SIGNAL(textEdited(QString)),
+               this, SLOT(on_expression_changed(QString)));
+       form->addRow(tr("Expression"), expression_edit_);
+
+       sample_count_cb_ = new QComboBox();
+       sample_count_cb_->setEditable(true);
+       sample_count_cb_->addItem(tr("same as session"));
+       sample_count_cb_->addItem(tr("100"));
+       sample_count_cb_->addItem(tr("10000"));
+       sample_count_cb_->addItem(tr("1000000"));
+       connect(sample_count_cb_, SIGNAL(editTextChanged(QString)),
+               this, SLOT(on_sample_count_changed(QString)));
+       form->addRow(tr("Number of Samples"), sample_count_cb_);
+
+       sample_rate_cb_ = new QComboBox();
+       sample_rate_cb_->setEditable(true);
+       sample_rate_cb_->addItem(tr("same as session"));
+       sample_rate_cb_->addItem(tr("100"));
+       sample_rate_cb_->addItem(tr("10000"));
+       sample_rate_cb_->addItem(tr("1000000"));
+       form->addRow(tr("Sample rate"), sample_rate_cb_);
+}
+
+void MathSignal::on_expression_changed(const QString &text)
+{
+       (void)text;
+
+       // Restart update timer
+       delayed_expr_updater_.start();
+}
+
+void MathSignal::on_sample_count_changed(const QString &text)
+{
+       (void)text;
+}
+
+} // namespace trace
+} // namespace views
+} // namespace pv