+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <extdef.h>
+
+#include <assert.h>
+#include <math.h>
+
+#include "trace.h"
+#include "view.h"
+
+namespace pv {
+namespace view {
+
+const int Trace::LabelHitPadding = 2;
+
+Trace::Trace(pv::SigSession &session, QString name) :
+ _session(session),
+ _name(name),
+ _v_offset(0)
+{
+}
+
+QString Trace::get_name() const
+{
+ return _name;
+}
+
+void Trace::set_name(QString name)
+{
+ _name = name;
+}
+
+QColor Trace::get_colour() const
+{
+ return _colour;
+}
+
+void Trace::set_colour(QColor colour)
+{
+ _colour = colour;
+}
+
+int Trace::get_v_offset() const
+{
+ return _v_offset;
+}
+
+void Trace::set_v_offset(int v_offset)
+{
+ _v_offset = v_offset;
+}
+
+void Trace::paint_label(QPainter &p, int y, int right, bool hover)
+{
+ p.setBrush(_colour);
+
+ if (!enabled())
+ return;
+
+ const QColor colour = get_colour();
+
+ compute_text_size(p);
+ const QRectF label_rect = get_label_rect(y, right);
+
+ // Paint the label
+ const QPointF points[] = {
+ label_rect.topLeft(),
+ label_rect.topRight(),
+ QPointF(right, y),
+ 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(right - 1, y),
+ QPointF(label_rect.right(), label_rect.bottom() - 1),
+ QPointF(label_rect.left() + 1, label_rect.bottom() - 1)
+ };
+
+ if (selected()) {
+ p.setPen(highlight_pen());
+ p.setBrush(Qt::transparent);
+ p.drawPolygon(points, countof(points));
+ }
+
+ p.setPen(Qt::transparent);
+ p.setBrush(hover ? colour.lighter() : 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, _name);
+}
+
+bool Trace::pt_in_label_rect(int y, int left, int right,
+ const QPoint &point)
+{
+ (void)left;
+
+ const QRectF label = get_label_rect(y, right);
+ return QRectF(
+ QPointF(label.left() - LabelHitPadding,
+ label.top() - LabelHitPadding),
+ QPointF(right, label.bottom() + LabelHitPadding)
+ ).contains(point);
+}
+
+void Trace::compute_text_size(QPainter &p)
+{
+ _text_size = QSize(
+ p.boundingRect(QRectF(), 0, _name).width(),
+ p.boundingRect(QRectF(), 0, "Tg").height());
+}
+
+QRectF Trace::get_label_rect(int y, int right)
+{
+ using pv::view::View;
+
+ const QSizeF label_size(
+ _text_size.width() + View::LabelPadding.width() * 2,
+ ceilf((_text_size.height() + View::LabelPadding.height() * 2) / 2) * 2);
+ const float label_arrow_length = label_size.height() / 2;
+ return QRectF(
+ right - label_arrow_length - label_size.width() - 0.5,
+ y + 0.5f - label_size.height() / 2,
+ label_size.width(), label_size.height());
+}
+
+} // namespace view
+} // namespace pv
projects / pulseview.git / commitdiff