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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2013 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 "cursorpair.hpp" | |
22 | ||
23 | #include "view.hpp" | |
24 | #include "pv/util.hpp" | |
25 | ||
26 | #include <cassert> | |
27 | #include <algorithm> | |
28 | ||
29 | using std::max; | |
30 | using std::make_pair; | |
31 | using std::min; | |
32 | using std::shared_ptr; | |
33 | using std::pair; | |
34 | ||
35 | namespace pv { | |
36 | namespace view { | |
37 | ||
38 | const int CursorPair::DeltaPadding = 8; | |
39 | const QColor CursorPair::ViewportFillColour(220, 231, 243); | |
40 | ||
41 | CursorPair::CursorPair(View &view) : | |
42 | TimeItem(view), | |
43 | first_(new Cursor(view, 0.0)), | |
44 | second_(new Cursor(view, 1.0)) | |
45 | { | |
46 | } | |
47 | ||
48 | bool CursorPair::enabled() const | |
49 | { | |
50 | return view_.cursors_shown(); | |
51 | } | |
52 | ||
53 | shared_ptr<Cursor> CursorPair::first() const | |
54 | { | |
55 | return first_; | |
56 | } | |
57 | ||
58 | shared_ptr<Cursor> CursorPair::second() const | |
59 | { | |
60 | return second_; | |
61 | } | |
62 | ||
63 | void CursorPair::set_time(double time) { | |
64 | const double delta = second_->time() - first_->time(); | |
65 | first_->set_time(time); | |
66 | second_->set_time(time + delta); | |
67 | } | |
68 | ||
69 | float CursorPair::get_x() const | |
70 | { | |
71 | return (first_->get_x() + second_->get_x()) / 2.0f; | |
72 | } | |
73 | ||
74 | QPoint CursorPair::point(const QRect &rect) const | |
75 | { | |
76 | return first_->point(rect); | |
77 | } | |
78 | ||
79 | pv::widgets::Popup* CursorPair::create_popup(QWidget *parent) | |
80 | { | |
81 | (void)parent; | |
82 | return nullptr; | |
83 | } | |
84 | ||
85 | QRectF CursorPair::label_rect(const QRectF &rect) const | |
86 | { | |
87 | const QSizeF label_size(text_size_ + LabelPadding * 2); | |
88 | const pair<float, float> offsets(get_cursor_offsets()); | |
89 | const pair<float, float> normal_offsets( | |
90 | (offsets.first < offsets.second) ? offsets : | |
91 | make_pair(offsets.second, offsets.first)); | |
92 | ||
93 | const float height = label_size.height(); | |
94 | const float left = max(normal_offsets.first + DeltaPadding, -height); | |
95 | const float right = min(normal_offsets.second - DeltaPadding, | |
96 | (float)rect.width() + height); | |
97 | ||
98 | return QRectF(left, rect.height() - label_size.height() - | |
99 | TimeMarker::ArrowSize - 0.5f, | |
100 | right - left, height); | |
101 | } | |
102 | ||
103 | void CursorPair::paint_label(QPainter &p, const QRect &rect, bool hover) | |
104 | { | |
105 | assert(first_); | |
106 | assert(second_); | |
107 | ||
108 | if (!enabled()) | |
109 | return; | |
110 | ||
111 | const QColor text_colour = | |
112 | ViewItem::select_text_colour(Cursor::FillColour); | |
113 | ||
114 | p.setPen(text_colour); | |
115 | compute_text_size(p); | |
116 | QRectF delta_rect(label_rect(rect)); | |
117 | ||
118 | const int radius = delta_rect.height() / 2; | |
119 | const QRectF text_rect(delta_rect.intersected( | |
120 | rect).adjusted(radius, 0, -radius, 0)); | |
121 | if (text_rect.width() >= text_size_.width()) | |
122 | { | |
123 | const int highlight_radius = delta_rect.height() / 2 - 2; | |
124 | ||
125 | if (selected()) { | |
126 | p.setBrush(Qt::transparent); | |
127 | p.setPen(highlight_pen()); | |
128 | p.drawRoundedRect(delta_rect, radius, radius); | |
129 | } | |
130 | ||
131 | p.setBrush(hover ? Cursor::FillColour.lighter() : | |
132 | Cursor::FillColour); | |
133 | p.setPen(Cursor::FillColour.darker()); | |
134 | p.drawRoundedRect(delta_rect, radius, radius); | |
135 | ||
136 | delta_rect.adjust(1, 1, -1, -1); | |
137 | p.setPen(Cursor::FillColour.lighter()); | |
138 | p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius); | |
139 | ||
140 | p.setPen(text_colour); | |
141 | p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, | |
142 | format_string()); | |
143 | } | |
144 | } | |
145 | ||
146 | void CursorPair::paint_back(QPainter &p, const ViewItemPaintParams &pp) { | |
147 | if (!enabled()) | |
148 | return; | |
149 | ||
150 | p.setPen(Qt::NoPen); | |
151 | p.setBrush(QBrush(ViewportFillColour)); | |
152 | ||
153 | const pair<float, float> offsets(get_cursor_offsets()); | |
154 | const int l = (int)max(min( | |
155 | offsets.first, offsets.second), 0.0f); | |
156 | const int r = (int)min(max( | |
157 | offsets.first, offsets.second), (float)pp.width()); | |
158 | ||
159 | p.drawRect(l, pp.top(), r - l, pp.height()); | |
160 | } | |
161 | ||
162 | QString CursorPair::format_string() | |
163 | { | |
164 | const unsigned int prefix = view_.tick_prefix(); | |
165 | const double delta = second_->time() - first_->time(); | |
166 | return QString("%1 / %2"). | |
167 | arg(util::format_time(delta, prefix, view_.time_unit(), 2)). | |
168 | arg(util::format_si_value(1.0 / fabs(delta), "Hz", -1, 4)); | |
169 | } | |
170 | ||
171 | void CursorPair::compute_text_size(QPainter &p) | |
172 | { | |
173 | assert(first_); | |
174 | assert(second_); | |
175 | ||
176 | text_size_ = p.boundingRect(QRectF(), 0, format_string()).size(); | |
177 | } | |
178 | ||
179 | pair<float, float> CursorPair::get_cursor_offsets() const | |
180 | { | |
181 | assert(first_); | |
182 | assert(second_); | |
183 | ||
184 | return pair<float, float>( | |
185 | (first_->time() - view_.offset()) / view_.scale(), | |
186 | (second_->time() - view_.offset()) / view_.scale()); | |
187 | } | |
188 | ||
189 | } // namespace view | |
190 | } // namespace pv |