--- /dev/null
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2015 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 <algorithm>
+
+#include <QRadialGradient>
+
+#include "signal.hpp"
+#include "signalscalehandle.hpp"
+#include "tracetreeitemowner.hpp"
+
+using std::max;
+using std::min;
+
+namespace pv {
+namespace view {
+
+SignalScaleHandle::SignalScaleHandle(Signal &owner) :
+ owner_(owner)
+{
+}
+
+bool SignalScaleHandle::enabled() const
+{
+ return selected() || owner_.selected();
+}
+
+void SignalScaleHandle::select(bool select)
+{
+ ViewItem::select(select);
+ owner_.owner()->row_item_appearance_changed(true, true);
+}
+
+void SignalScaleHandle::drag_release()
+{
+ RowItem::drag_release();
+ owner_.scale_handle_released();
+ owner_.owner()->row_item_appearance_changed(true, true);
+}
+
+void SignalScaleHandle::drag_by(const QPoint &delta)
+{
+ owner_.scale_handle_dragged(
+ drag_point_.y() + delta.y() - owner_.get_visual_y());
+}
+
+QPoint SignalScaleHandle::point(const QRect &rect) const
+{
+ return owner_.point(rect) + QPoint(0, owner_.scale_handle_offset());
+}
+
+QRectF SignalScaleHandle::hit_box_rect(const ViewItemPaintParams &pp) const
+{
+ const int text_height = ViewItemPaintParams::text_height();
+ const double x = -pp.pixels_offset() - text_height / 2;
+ const double min_x = pp.left() + text_height;
+ const double max_x = pp.right() - text_height * 2;
+ return QRectF(min(max(x, min_x), max_x),
+ owner_.get_visual_y() + owner_.scale_handle_offset() -
+ text_height / 2,
+ text_height, text_height);
+}
+
+void SignalScaleHandle::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
+{
+ if (!enabled())
+ return;
+
+ const QRectF r(hit_box_rect(pp));
+ const QPointF c = (r.topLeft() + 2 * r.center()) / 3;
+ QRadialGradient gradient(c, r.width(), c);
+
+ if (selected()) {
+ gradient.setColorAt(0.0, QColor(255, 255, 255));
+ gradient.setColorAt(0.75, QColor(192, 192, 192));
+ gradient.setColorAt(1.0, QColor(128, 128, 128));
+ } else {
+ gradient.setColorAt(0.0, QColor(192, 192, 192));
+ gradient.setColorAt(0.75, QColor(128, 128, 128));
+ gradient.setColorAt(1.0, QColor(128, 128, 128));
+ }
+
+ p.setBrush(QBrush(gradient));
+ p.setPen(QColor(128, 128, 128));
+ p.drawEllipse(r);
+}
+
+} // view
+} // pv
--- /dev/null
+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2015 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
+ */
+
+#ifndef PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP
+#define PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP
+
+#include "rowitem.hpp"
+
+namespace pv {
+namespace view {
+
+class Signal;
+
+/**
+ * A row item owned by a @c Signal that implements the v-scale adjustment grab
+ * handle.
+ */
+class SignalScaleHandle : public RowItem
+{
+ Q_OBJECT
+public:
+ /**
+ * Constructor
+ */
+ explicit SignalScaleHandle(Signal &owner);
+
+public:
+ /**
+ * Returns true if the parent item is enabled.
+ */
+ bool enabled() const;
+
+ /**
+ * Selects or deselects the signal.
+ */
+ void select(bool select = true);
+
+ /**
+ * Sets this item into the un-dragged state.
+ */
+ void drag_release();
+
+ /**
+ * Drags the item to a delta relative to the drag point.
+ * @param delta the offset from the drag point.
+ */
+ void drag_by(const QPoint &delta);
+
+ /**
+ * Get the drag point.
+ * @param rect the rectangle of the widget area.
+ */
+ QPoint point(const QRect &rect) const;
+
+ /**
+ * Computes the outline rectangle of the viewport hit-box.
+ * @param rect the rectangle of the viewport area.
+ * @return Returns the rectangle of the hit-box.
+ */
+ QRectF hit_box_rect(const ViewItemPaintParams &pp) const;
+
+ /**
+ * Paints the foreground layer of the item with a QPainter
+ * @param p the QPainter to paint into.
+ * @param pp the painting parameters object to paint with.
+ **/
+ void paint_fore(QPainter &p, const ViewItemPaintParams &pp);
+
+private:
+ Signal &owner_;
+};
+
+} // namespace view
+} // namespace pv
+
+#endif // PULSEVIEW_PV_VIEW_SIGNALSCALEHANDLE_HPP
projects / pulseview.git / commitdiff