Moved all classes into the pv namespace

[pulseview.git] / pv / signal.cpp

diff --git a/pv/signal.cpp b/pv/signal.cpp
new file mode 100644 (file)
index 0000000..92ef808
--- /dev/null
+++ b/pv/signal.cpp
@@ -0,0 +1,93 @@
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "signal.h"
+
+#include "extdef.h"
+
+namespace pv {
+
+const QSizeF Signal::LabelPadding(4, 0);
+
+Signal::Signal(QString name) :
+       _name(name)
+{
+}
+
+QString Signal::get_name() const
+{
+       return _name;
+}
+
+void Signal::paint_label(QPainter &p, const QRect &rect)
+{
+       p.setBrush(get_colour());
+
+       const QString text(_name);
+       const QColor colour = get_colour();
+
+       const QSizeF text_size = p.boundingRect(
+               QRectF(0, 0, rect.width(), 0), 0, text).size();
+
+       const float nominal_offset = get_nominal_offset(rect);
+       const QSizeF label_size(
+               text_size.width() + LabelPadding.width() * 2,
+               text_size.height() + LabelPadding.height() * 2);
+       const float label_arrow_length = label_size.height() / 2;
+       const QRectF label_rect(
+               rect.right() - label_arrow_length - label_size.width(),
+               nominal_offset - label_size.height() / 2,
+               label_size.width(), label_size.height());
+
+       // Paint the label
+       const QPointF points[] = {
+               label_rect.topLeft(),
+               label_rect.topRight(),
+               QPointF(rect.right(), nominal_offset),
+               label_rect.bottomRight(),
+               label_rect.bottomLeft()
+       };
+
+       const QPointF highlight_points[] = {
+               QPointF(label_rect.left() + 1, label_rect.top() + 1),
+               QPointF(label_rect.right(), label_rect.top() + 1),
+               QPointF(rect.right() - 1, nominal_offset),
+               QPointF(label_rect.right(), label_rect.bottom() - 1),
+               QPointF(label_rect.left() + 1, label_rect.bottom() - 1)
+       };
+
+       p.setPen(Qt::transparent);
+       p.setBrush(colour);
+       p.drawPolygon(points, countof(points));
+
+       p.setPen(colour.lighter());
+       p.setBrush(Qt::transparent);
+       p.drawPolygon(highlight_points, countof(highlight_points));
+
+       p.setPen(colour.darker());
+       p.setBrush(Qt::transparent);
+       p.drawPolygon(points, countof(points));
+
+       // Paint the text
+       p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white);
+       p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, text);
+}
+
+} // namespace pv