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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 | ||
40 | CursorPair::CursorPair(View &view) : | |
41 | TimeItem(view), | |
42 | first_(new Cursor(view, 0.0)), | |
43 | second_(new Cursor(view, 1.0)) | |
44 | { | |
45 | } | |
46 | ||
47 | bool CursorPair::enabled() const | |
48 | { | |
49 | return view_.cursors_shown(); | |
50 | } | |
51 | ||
52 | shared_ptr<Cursor> CursorPair::first() const | |
53 | { | |
54 | return first_; | |
55 | } | |
56 | ||
57 | shared_ptr<Cursor> CursorPair::second() const | |
58 | { | |
59 | return second_; | |
60 | } | |
61 | ||
62 | void CursorPair::set_time(double time) { | |
63 | const double delta = second_->time() - first_->time(); | |
64 | first_->set_time(time); | |
65 | second_->set_time(time + delta); | |
66 | } | |
67 | ||
68 | float CursorPair::get_x() const | |
69 | { | |
70 | return (first_->get_x() + second_->get_x()) / 2.0f; | |
71 | } | |
72 | ||
73 | QPoint CursorPair::point() const | |
74 | { | |
75 | return first_->point(); | |
76 | } | |
77 | ||
78 | pv::widgets::Popup* CursorPair::create_popup(QWidget *parent) | |
79 | { | |
80 | (void)parent; | |
81 | return nullptr; | |
82 | } | |
83 | ||
84 | QRectF CursorPair::label_rect(const QRectF &rect) const | |
85 | { | |
86 | const QSizeF label_size( | |
87 | text_size_.width() + View::LabelPadding.width() * 2, | |
88 | text_size_.height() + View::LabelPadding.height() * 2); | |
89 | const pair<float, float> offsets(get_cursor_offsets()); | |
90 | const pair<float, float> normal_offsets( | |
91 | (offsets.first < offsets.second) ? offsets : | |
92 | make_pair(offsets.second, offsets.first)); | |
93 | ||
94 | const float height = label_size.height(); | |
95 | const float left = max(normal_offsets.first + DeltaPadding, -height); | |
96 | const float right = min(normal_offsets.second - DeltaPadding, | |
97 | (float)rect.width() + height); | |
98 | ||
99 | return QRectF(left, rect.height() - label_size.height() - | |
100 | TimeMarker::ArrowSize - TimeMarker::Offset - 0.5f, | |
101 | right - left, height); | |
102 | } | |
103 | ||
104 | void CursorPair::paint_label(QPainter &p, const QRect &rect) | |
105 | { | |
106 | assert(first_); | |
107 | assert(second_); | |
108 | ||
109 | if (!enabled()) | |
110 | return; | |
111 | ||
112 | const unsigned int prefix = view_.tick_prefix(); | |
113 | ||
114 | compute_text_size(p, prefix); | |
115 | QRectF delta_rect(label_rect(rect)); | |
116 | ||
117 | const int radius = delta_rect.height() / 2; | |
118 | const QRectF text_rect(delta_rect.intersected( | |
119 | rect).adjusted(radius, 0, -radius, 0)); | |
120 | if(text_rect.width() >= text_size_.width()) | |
121 | { | |
122 | const int highlight_radius = delta_rect.height() / 2 - 2; | |
123 | ||
124 | if (selected()) { | |
125 | p.setBrush(Qt::transparent); | |
126 | p.setPen(highlight_pen()); | |
127 | p.drawRoundedRect(delta_rect, radius, radius); | |
128 | } | |
129 | ||
130 | p.setBrush(Cursor::FillColour); | |
131 | p.setPen(Cursor::FillColour.darker()); | |
132 | p.drawRoundedRect(delta_rect, radius, radius); | |
133 | ||
134 | delta_rect.adjust(1, 1, -1, -1); | |
135 | p.setPen(Cursor::FillColour.lighter()); | |
136 | p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius); | |
137 | ||
138 | p.setPen(SelectableItem::select_text_colour( | |
139 | Cursor::FillColour)); | |
140 | p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, | |
141 | pv::util::format_time(second_->time() - first_->time(), prefix, 2)); | |
142 | } | |
143 | } | |
144 | ||
145 | void CursorPair::draw_viewport_background(QPainter &p, | |
146 | const QRect &rect) | |
147 | { | |
148 | p.setPen(Qt::NoPen); | |
149 | p.setBrush(QBrush(View::CursorAreaColour)); | |
150 | ||
151 | const pair<float, float> offsets(get_cursor_offsets()); | |
152 | const int l = (int)max(min( | |
153 | offsets.first, offsets.second), 0.0f); | |
154 | const int r = (int)min(max( | |
155 | offsets.first, offsets.second), (float)rect.width()); | |
156 | ||
157 | p.drawRect(l, 0, r - l, rect.height()); | |
158 | } | |
159 | ||
160 | void CursorPair::draw_viewport_foreground(QPainter &p, | |
161 | const QRect &rect) | |
162 | { | |
163 | assert(first_); | |
164 | assert(second_); | |
165 | ||
166 | first_->paint(p, rect); | |
167 | second_->paint(p, rect); | |
168 | } | |
169 | ||
170 | void CursorPair::compute_text_size(QPainter &p, unsigned int prefix) | |
171 | { | |
172 | assert(first_); | |
173 | assert(second_); | |
174 | ||
175 | text_size_ = p.boundingRect(QRectF(), 0, pv::util::format_time( | |
176 | second_->time() - first_->time(), prefix, 2)).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 |