2 * This file is part of the PulseView project.
4 * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <QRadialGradient>
26 #include "signalscalehandle.hpp"
27 #include "tracetreeitemowner.hpp"
35 SignalScaleHandle::SignalScaleHandle(Signal &owner) :
40 bool SignalScaleHandle::enabled() const
42 return selected() || owner_.selected();
45 void SignalScaleHandle::select(bool select)
47 ViewItem::select(select);
48 owner_.owner()->row_item_appearance_changed(true, true);
51 void SignalScaleHandle::drag_release()
53 RowItem::drag_release();
54 owner_.scale_handle_released();
55 owner_.owner()->row_item_appearance_changed(true, true);
58 void SignalScaleHandle::drag_by(const QPoint &delta)
60 owner_.scale_handle_dragged(
61 drag_point_.y() + delta.y() - owner_.get_visual_y());
62 owner_.owner()->row_item_appearance_changed(true, true);
65 QPoint SignalScaleHandle::point(const QRect &rect) const
67 return owner_.point(rect) + QPoint(0, owner_.scale_handle_offset());
70 QRectF SignalScaleHandle::hit_box_rect(const ViewItemPaintParams &pp) const
72 const int text_height = ViewItemPaintParams::text_height();
73 const double x = -pp.pixels_offset() - text_height / 2;
74 const double min_x = pp.left() + text_height;
75 const double max_x = pp.right() - text_height * 2;
76 return QRectF(min(max(x, min_x), max_x),
77 owner_.get_visual_y() + owner_.scale_handle_offset() -
79 text_height, text_height);
82 void SignalScaleHandle::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
87 const QRectF r(hit_box_rect(pp));
88 const QPointF c = (r.topLeft() + 2 * r.center()) / 3;
89 QRadialGradient gradient(c, r.width(), c);
92 gradient.setColorAt(0.0, QColor(255, 255, 255));
93 gradient.setColorAt(0.75, QColor(192, 192, 192));
94 gradient.setColorAt(1.0, QColor(128, 128, 128));
96 gradient.setColorAt(0.0, QColor(192, 192, 192));
97 gradient.setColorAt(0.75, QColor(128, 128, 128));
98 gradient.setColorAt(1.0, QColor(128, 128, 128));
101 p.setBrush(QBrush(gradient));
102 p.setPen(QColor(128, 128, 128));