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1 | /* |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2015 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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 | |
19 | */ | |
20 | ||
21 | #include <algorithm> | |
22 | ||
23 | #include <QRadialGradient> | |
24 | ||
25 | #include "signal.hpp" | |
26 | #include "signalscalehandle.hpp" | |
27 | #include "tracetreeitemowner.hpp" | |
28 | ||
29 | using std::max; | |
30 | using std::min; | |
31 | ||
32 | namespace pv { | |
f4e57597 SA |
33 | namespace views { |
34 | namespace TraceView { | |
f1626bb8 JH |
35 | |
36 | SignalScaleHandle::SignalScaleHandle(Signal &owner) : | |
37 | owner_(owner) | |
38 | { | |
39 | } | |
40 | ||
41 | bool SignalScaleHandle::enabled() const | |
42 | { | |
43 | return selected() || owner_.selected(); | |
44 | } | |
45 | ||
46 | void SignalScaleHandle::select(bool select) | |
47 | { | |
48 | ViewItem::select(select); | |
49 | owner_.owner()->row_item_appearance_changed(true, true); | |
50 | } | |
51 | ||
52 | void SignalScaleHandle::drag_release() | |
53 | { | |
54 | RowItem::drag_release(); | |
55 | owner_.scale_handle_released(); | |
56 | owner_.owner()->row_item_appearance_changed(true, true); | |
57 | } | |
58 | ||
59 | void SignalScaleHandle::drag_by(const QPoint &delta) | |
60 | { | |
61 | owner_.scale_handle_dragged( | |
62 | drag_point_.y() + delta.y() - owner_.get_visual_y()); | |
725568ac | 63 | owner_.owner()->row_item_appearance_changed(true, true); |
f1626bb8 JH |
64 | } |
65 | ||
66 | QPoint SignalScaleHandle::point(const QRect &rect) const | |
67 | { | |
68 | return owner_.point(rect) + QPoint(0, owner_.scale_handle_offset()); | |
69 | } | |
70 | ||
71 | QRectF SignalScaleHandle::hit_box_rect(const ViewItemPaintParams &pp) const | |
72 | { | |
73 | const int text_height = ViewItemPaintParams::text_height(); | |
74 | const double x = -pp.pixels_offset() - text_height / 2; | |
75 | const double min_x = pp.left() + text_height; | |
76 | const double max_x = pp.right() - text_height * 2; | |
77 | return QRectF(min(max(x, min_x), max_x), | |
78 | owner_.get_visual_y() + owner_.scale_handle_offset() - | |
79 | text_height / 2, | |
80 | text_height, text_height); | |
81 | } | |
82 | ||
83 | void SignalScaleHandle::paint_fore(QPainter &p, const ViewItemPaintParams &pp) | |
84 | { | |
85 | if (!enabled()) | |
86 | return; | |
87 | ||
88 | const QRectF r(hit_box_rect(pp)); | |
89 | const QPointF c = (r.topLeft() + 2 * r.center()) / 3; | |
90 | QRadialGradient gradient(c, r.width(), c); | |
91 | ||
92 | if (selected()) { | |
93 | gradient.setColorAt(0.0, QColor(255, 255, 255)); | |
94 | gradient.setColorAt(0.75, QColor(192, 192, 192)); | |
95 | gradient.setColorAt(1.0, QColor(128, 128, 128)); | |
96 | } else { | |
97 | gradient.setColorAt(0.0, QColor(192, 192, 192)); | |
98 | gradient.setColorAt(0.75, QColor(128, 128, 128)); | |
99 | gradient.setColorAt(1.0, QColor(128, 128, 128)); | |
100 | } | |
101 | ||
102 | p.setBrush(QBrush(gradient)); | |
103 | p.setPen(QColor(128, 128, 128)); | |
104 | p.drawEllipse(r); | |
105 | } | |
106 | ||
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107 | } // namespace TraceView |
108 | } // namespace views | |
109 | } // namespace pv |