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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 | ||
819e2e95 | 21 | #include <extdef.h> |
ca4ec3ea | 22 | |
819e2e95 JH |
23 | #include <QApplication> |
24 | #include <QFontMetrics> | |
25 | #include <QMouseEvent> | |
26 | ||
27 | #include "ruler.hpp" | |
2acdb232 | 28 | #include "view.hpp" |
ccdd3ef5 | 29 | |
819f4c25 | 30 | using namespace Qt; |
f76af637 | 31 | |
819e2e95 JH |
32 | using std::shared_ptr; |
33 | using std::vector; | |
34 | ||
ccdd3ef5 JH |
35 | namespace pv { |
36 | namespace view { | |
37 | ||
249229ec | 38 | const float Ruler::RulerHeight = 2.5f; // x Text Height |
ccdd3ef5 | 39 | const int Ruler::MinorTickSubdivision = 4; |
ccdd3ef5 | 40 | |
415341a1 | 41 | const float Ruler::HoverArrowSize = 0.5f; // x Text Height |
b3a7c013 | 42 | |
ccdd3ef5 | 43 | Ruler::Ruler(View &parent) : |
e456e8e1 | 44 | MarginWidget(parent) |
ccdd3ef5 | 45 | { |
b3a7c013 JH |
46 | setMouseTracking(true); |
47 | ||
8dbbc7f0 | 48 | connect(&view_, SIGNAL(hover_point_changed()), |
b3a7c013 | 49 | this, SLOT(hover_point_changed())); |
4b0af0b6 JS |
50 | connect(&view_, SIGNAL(offset_changed()), |
51 | this, SLOT(invalidate_tick_position_cache())); | |
52 | connect(&view_, SIGNAL(scale_changed()), | |
53 | this, SLOT(invalidate_tick_position_cache())); | |
54 | connect(&view_, SIGNAL(tick_prefix_changed()), | |
55 | this, SLOT(invalidate_tick_position_cache())); | |
56 | connect(&view_, SIGNAL(tick_precision_changed()), | |
57 | this, SLOT(invalidate_tick_position_cache())); | |
58 | connect(&view_, SIGNAL(tick_period_changed()), | |
59 | this, SLOT(invalidate_tick_position_cache())); | |
60 | connect(&view_, SIGNAL(time_unit_changed()), | |
61 | this, SLOT(invalidate_tick_position_cache())); | |
ccdd3ef5 JH |
62 | } |
63 | ||
a6c1726e JH |
64 | QSize Ruler::sizeHint() const |
65 | { | |
249229ec JH |
66 | const int text_height = calculate_text_height(); |
67 | return QSize(0, RulerHeight * text_height); | |
a6c1726e JH |
68 | } |
69 | ||
819e2e95 JH |
70 | QSize Ruler::extended_size_hint() const |
71 | { | |
f5b833c6 JH |
72 | QRectF max_rect; |
73 | std::vector< std::shared_ptr<TimeItem> > items(view_.time_items()); | |
74 | for (auto &i : items) | |
75 | max_rect = max_rect.united(i->label_rect(QRect())); | |
76 | return QSize(0, sizeHint().height() - max_rect.top() / 2 + | |
77 | ViewItem::HighlightRadius); | |
819e2e95 JH |
78 | } |
79 | ||
3e124bee JH |
80 | vector< shared_ptr<ViewItem> > Ruler::items() |
81 | { | |
82 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); | |
83 | return vector< shared_ptr<ViewItem> >( | |
84 | time_items.begin(), time_items.end()); | |
85 | } | |
86 | ||
6871ee9f | 87 | shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt) |
25a0d47c JH |
88 | { |
89 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
90 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
91 | if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt)) | |
92 | return *i; | |
93 | return nullptr; | |
94 | } | |
95 | ||
e314eca4 | 96 | void Ruler::paintEvent(QPaintEvent*) |
ccdd3ef5 | 97 | { |
4b0af0b6 JS |
98 | if (!tick_position_cache_) { |
99 | auto ffunc = [this](const pv::util::Timestamp& t) | |
100 | { | |
101 | return util::format_time( | |
102 | t, | |
103 | this->view_.tick_prefix(), | |
104 | this->view_.time_unit(), | |
105 | this->view_.tick_precision()); | |
106 | }; | |
107 | ||
108 | tick_position_cache_.emplace(calculate_tick_positions( | |
109 | view_.tick_period(), | |
110 | view_.offset(), | |
111 | view_.scale(), | |
112 | width(), | |
113 | ffunc)); | |
114 | } | |
ccdd3ef5 | 115 | |
4b0af0b6 | 116 | const int ValueMargin = 3; |
f260e3bf | 117 | |
e456e8e1 | 118 | const int text_height = calculate_text_height(); |
249229ec | 119 | const int ruler_height = RulerHeight * text_height; |
e456e8e1 | 120 | const int major_tick_y1 = text_height + ValueMargin * 2; |
249229ec | 121 | const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2; |
f260e3bf | 122 | |
4b0af0b6 JS |
123 | QPainter p(this); |
124 | p.setRenderHint(QPainter::Antialiasing); | |
ccdd3ef5 | 125 | |
4b0af0b6 JS |
126 | // Draw the tick marks |
127 | p.setPen(palette().color(foregroundRole())); | |
ccdd3ef5 | 128 | |
4b0af0b6 JS |
129 | for (const auto& tick: tick_position_cache_->major) { |
130 | p.drawText(tick.first, ValueMargin, 0, text_height, | |
131 | AlignCenter | AlignTop | TextDontClip, tick.second); | |
132 | p.drawLine(QPointF(tick.first, major_tick_y1), | |
133 | QPointF(tick.first, ruler_height)); | |
134 | } | |
ccdd3ef5 | 135 | |
4b0af0b6 JS |
136 | for (const auto& tick: tick_position_cache_->minor) { |
137 | p.drawLine(QPointF(tick, minor_tick_y1), | |
138 | QPointF(tick, ruler_height)); | |
139 | } | |
ccdd3ef5 | 140 | |
b3a7c013 | 141 | // Draw the hover mark |
249229ec | 142 | draw_hover_mark(p, text_height); |
819e2e95 JH |
143 | |
144 | // The cursor labels are not drawn with the arrows exactly on the | |
145 | // bottom line of the widget, because then the selection shadow | |
146 | // would be clipped away. | |
09d5df11 | 147 | const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius); |
819e2e95 JH |
148 | |
149 | // Draw the items | |
150 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
49028d6c | 151 | for (auto &i : items) { |
803cdac4 | 152 | const bool highlight = !item_dragging_ && |
49028d6c JH |
153 | i->label_rect(r).contains(mouse_point_); |
154 | i->paint_label(p, r, highlight); | |
155 | } | |
819e2e95 JH |
156 | } |
157 | ||
4b0af0b6 JS |
158 | Ruler::TickPositions Ruler::calculate_tick_positions( |
159 | const double major_period, | |
160 | const pv::util::Timestamp& offset, | |
161 | const double scale, | |
162 | const int width, | |
163 | std::function<QString(const pv::util::Timestamp&)> format_function) | |
164 | { | |
165 | TickPositions tp; | |
166 | ||
167 | const double minor_period = major_period / MinorTickSubdivision; | |
168 | const pv::util::Timestamp first_major_division = floor(offset / major_period); | |
169 | const pv::util::Timestamp first_minor_division = ceil(offset / minor_period); | |
170 | const pv::util::Timestamp t0 = first_major_division * major_period; | |
171 | ||
172 | int division = (round(first_minor_division - | |
173 | first_major_division * MinorTickSubdivision)).convert_to<int>() - 1; | |
174 | ||
175 | double x; | |
176 | ||
177 | do { | |
178 | const pv::util::Timestamp t = t0 + division * minor_period; | |
179 | x = ((t - offset) / scale).convert_to<double>(); | |
180 | ||
181 | if (division % MinorTickSubdivision == 0) { | |
182 | tp.major.emplace_back(x, format_function(t)); | |
183 | } else { | |
184 | tp.minor.emplace_back(x); | |
185 | } | |
186 | ||
187 | division++; | |
188 | } while (x < width); | |
189 | ||
190 | return tp; | |
191 | } | |
192 | ||
819e2e95 JH |
193 | void Ruler::mouseDoubleClickEvent(QMouseEvent *e) |
194 | { | |
195 | view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale()); | |
196 | } | |
197 | ||
249229ec | 198 | void Ruler::draw_hover_mark(QPainter &p, int text_height) |
b3a7c013 | 199 | { |
8dbbc7f0 | 200 | const int x = view_.hover_point().x(); |
333d5bbc | 201 | |
84a0d458 | 202 | if (x == -1) |
b3a7c013 JH |
203 | return; |
204 | ||
205 | p.setPen(QPen(Qt::NoPen)); | |
ad1d8e2b | 206 | p.setBrush(QBrush(palette().color(foregroundRole()))); |
b3a7c013 | 207 | |
249229ec | 208 | const int b = RulerHeight * text_height; |
415341a1 | 209 | const float hover_arrow_size = HoverArrowSize * text_height; |
b3a7c013 JH |
210 | const QPointF points[] = { |
211 | QPointF(x, b), | |
415341a1 JH |
212 | QPointF(x - hover_arrow_size, b - hover_arrow_size), |
213 | QPointF(x + hover_arrow_size, b - hover_arrow_size) | |
b3a7c013 JH |
214 | }; |
215 | p.drawPolygon(points, countof(points)); | |
216 | } | |
217 | ||
e456e8e1 | 218 | int Ruler::calculate_text_height() const |
819e2e95 | 219 | { |
c0096500 | 220 | return QFontMetrics(font()).ascent(); |
819e2e95 JH |
221 | } |
222 | ||
b3a7c013 JH |
223 | void Ruler::hover_point_changed() |
224 | { | |
225 | update(); | |
226 | } | |
227 | ||
4b0af0b6 JS |
228 | void Ruler::invalidate_tick_position_cache() |
229 | { | |
230 | tick_position_cache_ = boost::none; | |
231 | } | |
232 | ||
233 | void Ruler::resizeEvent(QResizeEvent*) | |
234 | { | |
235 | // the tick calculation depends on the width of this widget | |
236 | invalidate_tick_position_cache(); | |
237 | } | |
238 | ||
ccdd3ef5 JH |
239 | } // namespace view |
240 | } // namespace pv |