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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 | first_(new Cursor(view, 0.0)), | |
42 | second_(new Cursor(view, 1.0)), | |
43 | view_(view) | |
44 | { | |
45 | } | |
46 | ||
47 | shared_ptr<Cursor> CursorPair::first() const | |
48 | { | |
49 | return first_; | |
50 | } | |
51 | ||
52 | shared_ptr<Cursor> CursorPair::second() const | |
53 | { | |
54 | return second_; | |
55 | } | |
56 | ||
57 | QRectF CursorPair::get_label_rect(const QRect &rect) const | |
58 | { | |
59 | const QSizeF label_size( | |
60 | text_size_.width() + View::LabelPadding.width() * 2, | |
61 | text_size_.height() + View::LabelPadding.height() * 2); | |
62 | const pair<float, float> offsets(get_cursor_offsets()); | |
63 | const pair<float, float> normal_offsets( | |
64 | (offsets.first < offsets.second) ? offsets : | |
65 | make_pair(offsets.second, offsets.first)); | |
66 | ||
67 | const float height = label_size.height(); | |
68 | const float left = max(normal_offsets.first + DeltaPadding, -height); | |
69 | const float right = min(normal_offsets.second - DeltaPadding, | |
70 | (float)rect.width() + height); | |
71 | ||
72 | return QRectF(left, rect.height() - label_size.height() - | |
73 | Cursor::ArrowSize - Cursor::Offset - 0.5f, | |
74 | right - left, height); | |
75 | } | |
76 | ||
77 | void CursorPair::draw_markers(QPainter &p, | |
78 | const QRect &rect, unsigned int prefix) | |
79 | { | |
80 | assert(first_); | |
81 | assert(second_); | |
82 | ||
83 | compute_text_size(p, prefix); | |
84 | QRectF delta_rect(get_label_rect(rect)); | |
85 | ||
86 | const int radius = delta_rect.height() / 2; | |
87 | const QRectF text_rect(delta_rect.intersected( | |
88 | rect).adjusted(radius, 0, -radius, 0)); | |
89 | if(text_rect.width() >= text_size_.width()) | |
90 | { | |
91 | const int highlight_radius = delta_rect.height() / 2 - 2; | |
92 | ||
93 | p.setBrush(Cursor::FillColour); | |
94 | p.setPen(Cursor::LineColour); | |
95 | p.drawRoundedRect(delta_rect, radius, radius); | |
96 | ||
97 | delta_rect.adjust(1, 1, -1, -1); | |
98 | p.setPen(Cursor::HighlightColour); | |
99 | p.drawRoundedRect(delta_rect, highlight_radius, highlight_radius); | |
100 | ||
101 | p.setPen(Cursor::TextColour); | |
102 | p.drawText(text_rect, Qt::AlignCenter | Qt::AlignVCenter, | |
103 | pv::util::format_time(second_->time() - first_->time(), prefix, 2)); | |
104 | } | |
105 | ||
106 | // Paint the cursor markers | |
107 | first_->paint_label(p, rect, prefix); | |
108 | second_->paint_label(p, rect, prefix); | |
109 | } | |
110 | ||
111 | void CursorPair::draw_viewport_background(QPainter &p, | |
112 | const QRect &rect) | |
113 | { | |
114 | p.setPen(Qt::NoPen); | |
115 | p.setBrush(QBrush(View::CursorAreaColour)); | |
116 | ||
117 | const pair<float, float> offsets(get_cursor_offsets()); | |
118 | const int l = (int)max(min( | |
119 | offsets.first, offsets.second), 0.0f); | |
120 | const int r = (int)min(max( | |
121 | offsets.first, offsets.second), (float)rect.width()); | |
122 | ||
123 | p.drawRect(l, 0, r - l, rect.height()); | |
124 | } | |
125 | ||
126 | void CursorPair::draw_viewport_foreground(QPainter &p, | |
127 | const QRect &rect) | |
128 | { | |
129 | assert(first_); | |
130 | assert(second_); | |
131 | ||
132 | first_->paint(p, rect); | |
133 | second_->paint(p, rect); | |
134 | } | |
135 | ||
136 | void CursorPair::compute_text_size(QPainter &p, unsigned int prefix) | |
137 | { | |
138 | assert(first_); | |
139 | assert(second_); | |
140 | ||
141 | text_size_ = p.boundingRect(QRectF(), 0, pv::util::format_time( | |
142 | second_->time() - first_->time(), prefix, 2)).size(); | |
143 | } | |
144 | ||
145 | pair<float, float> CursorPair::get_cursor_offsets() const | |
146 | { | |
147 | assert(first_); | |
148 | assert(second_); | |
149 | ||
150 | return pair<float, float>( | |
151 | (first_->time() - view_.offset()) / view_.scale(), | |
152 | (second_->time() - view_.offset()) / view_.scale()); | |
153 | } | |
154 | ||
155 | } // namespace view | |
156 | } // namespace pv |