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Commit | Line | Data |
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ccdd3ef5 | 1 | /* |
b3f22de0 | 2 | * This file is part of the PulseView project. |
ccdd3ef5 JH |
3 | * |
4 | * Copyright (C) 2012 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 | ||
2acdb232 | 21 | #include "ruler.hpp" |
ca4ec3ea | 22 | |
2acdb232 JH |
23 | #include "view.hpp" |
24 | #include "pv/util.hpp" | |
ccdd3ef5 | 25 | |
cef18fc6 | 26 | #include <extdef.h> |
ccdd3ef5 | 27 | |
819f4c25 | 28 | using namespace Qt; |
f76af637 | 29 | |
ccdd3ef5 JH |
30 | namespace pv { |
31 | namespace view { | |
32 | ||
a6c1726e | 33 | const int Ruler::RulerHeight = 30; |
ccdd3ef5 | 34 | const int Ruler::MinorTickSubdivision = 4; |
ccdd3ef5 | 35 | |
b3a7c013 JH |
36 | const int Ruler::HoverArrowSize = 5; |
37 | ||
ccdd3ef5 | 38 | Ruler::Ruler(View &parent) : |
84a0d458 | 39 | MarginWidget(parent) |
ccdd3ef5 | 40 | { |
b3a7c013 JH |
41 | setMouseTracking(true); |
42 | ||
8dbbc7f0 | 43 | connect(&view_, SIGNAL(hover_point_changed()), |
b3a7c013 | 44 | this, SLOT(hover_point_changed())); |
ccdd3ef5 JH |
45 | } |
46 | ||
a6c1726e JH |
47 | QSize Ruler::sizeHint() const |
48 | { | |
49 | return QSize(0, RulerHeight); | |
50 | } | |
51 | ||
e314eca4 | 52 | void Ruler::paintEvent(QPaintEvent*) |
ccdd3ef5 | 53 | { |
f260e3bf | 54 | const int ValueMargin = 3; |
3f509c1f | 55 | |
ccdd3ef5 | 56 | QPainter p(this); |
ce6e73a8 | 57 | p.setRenderHint(QPainter::Antialiasing); |
ccdd3ef5 | 58 | |
361c560e JH |
59 | const double tick_period = view_.tick_period(); |
60 | const unsigned int prefix = view_.tick_prefix(); | |
1b5813fe | 61 | |
ccdd3ef5 | 62 | const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX, |
3af62a24 | 63 | AlignLeft | AlignTop, "8").height(); |
ccdd3ef5 JH |
64 | |
65 | // Draw the tick marks | |
d2caed8d | 66 | p.setPen(palette().color(foregroundRole())); |
ccdd3ef5 JH |
67 | |
68 | const double minor_tick_period = tick_period / MinorTickSubdivision; | |
69 | const double first_major_division = | |
8dbbc7f0 | 70 | floor(view_.offset() / tick_period); |
ccdd3ef5 | 71 | const double first_minor_division = |
8dbbc7f0 | 72 | ceil(view_.offset() / minor_tick_period); |
ccdd3ef5 JH |
73 | const double t0 = first_major_division * tick_period; |
74 | ||
75 | int division = (int)round(first_minor_division - | |
64b678ba | 76 | first_major_division * MinorTickSubdivision) - 1; |
f260e3bf JH |
77 | |
78 | const int major_tick_y1 = text_height + ValueMargin * 2; | |
79 | const int tick_y2 = height(); | |
80 | const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2; | |
81 | ||
64b678ba | 82 | double x; |
ccdd3ef5 | 83 | |
64b678ba JH |
84 | do { |
85 | const double t = t0 + division * minor_tick_period; | |
8dbbc7f0 | 86 | x = (t - view_.offset()) / view_.scale(); |
ccdd3ef5 | 87 | |
333d5bbc | 88 | if (division % MinorTickSubdivision == 0) |
ccdd3ef5 JH |
89 | { |
90 | // Draw a major tick | |
f260e3bf JH |
91 | p.drawText(x, ValueMargin, 0, text_height, |
92 | AlignCenter | AlignTop | TextDontClip, | |
f0c9f81c | 93 | pv::util::format_time(t, prefix)); |
f260e3bf JH |
94 | p.drawLine(QPointF(x, major_tick_y1), |
95 | QPointF(x, tick_y2)); | |
ccdd3ef5 JH |
96 | } |
97 | else | |
98 | { | |
99 | // Draw a minor tick | |
f260e3bf JH |
100 | p.drawLine(QPointF(x, minor_tick_y1), |
101 | QPointF(x, tick_y2)); | |
ccdd3ef5 JH |
102 | } |
103 | ||
104 | division++; | |
64b678ba JH |
105 | |
106 | } while (x < width()); | |
ccdd3ef5 | 107 | |
b3a7c013 JH |
108 | // Draw the hover mark |
109 | draw_hover_mark(p); | |
ca4ec3ea JH |
110 | } |
111 | ||
b3a7c013 JH |
112 | void Ruler::draw_hover_mark(QPainter &p) |
113 | { | |
8dbbc7f0 | 114 | const int x = view_.hover_point().x(); |
333d5bbc | 115 | |
84a0d458 | 116 | if (x == -1) |
b3a7c013 JH |
117 | return; |
118 | ||
119 | p.setPen(QPen(Qt::NoPen)); | |
ad1d8e2b | 120 | p.setBrush(QBrush(palette().color(foregroundRole()))); |
b3a7c013 JH |
121 | |
122 | const int b = height() - 1; | |
123 | const QPointF points[] = { | |
124 | QPointF(x, b), | |
125 | QPointF(x - HoverArrowSize, b - HoverArrowSize), | |
126 | QPointF(x + HoverArrowSize, b - HoverArrowSize) | |
127 | }; | |
128 | p.drawPolygon(points, countof(points)); | |
129 | } | |
130 | ||
131 | void Ruler::hover_point_changed() | |
132 | { | |
133 | update(); | |
134 | } | |
135 | ||
ccdd3ef5 JH |
136 | } // namespace view |
137 | } // namespace pv |