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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 | |
819e2e95 JH |
30 | #include <pv/util.hpp> |
31 | #include <pv/widgets/popup.hpp> | |
ccdd3ef5 | 32 | |
819f4c25 | 33 | using namespace Qt; |
f76af637 | 34 | |
819e2e95 JH |
35 | using std::shared_ptr; |
36 | using std::vector; | |
37 | ||
ccdd3ef5 JH |
38 | namespace pv { |
39 | namespace view { | |
40 | ||
a6c1726e | 41 | const int Ruler::RulerHeight = 30; |
ccdd3ef5 | 42 | const int Ruler::MinorTickSubdivision = 4; |
ccdd3ef5 | 43 | |
b3a7c013 JH |
44 | const int Ruler::HoverArrowSize = 5; |
45 | ||
819e2e95 JH |
46 | const int Ruler::Padding = 20; |
47 | const int Ruler::BaselineOffset = 5; | |
48 | ||
ccdd3ef5 | 49 | Ruler::Ruler(View &parent) : |
819e2e95 JH |
50 | MarginWidget(parent), |
51 | text_height_(calculate_text_height()) | |
ccdd3ef5 | 52 | { |
b3a7c013 JH |
53 | setMouseTracking(true); |
54 | ||
8dbbc7f0 | 55 | connect(&view_, SIGNAL(hover_point_changed()), |
b3a7c013 | 56 | this, SLOT(hover_point_changed())); |
ccdd3ef5 JH |
57 | } |
58 | ||
819e2e95 JH |
59 | void Ruler::clear_selection() |
60 | { | |
61 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
62 | for (auto &i : items) | |
63 | i->select(false); | |
64 | update(); | |
65 | } | |
66 | ||
a6c1726e JH |
67 | QSize Ruler::sizeHint() const |
68 | { | |
69 | return QSize(0, RulerHeight); | |
70 | } | |
71 | ||
819e2e95 JH |
72 | QSize Ruler::extended_size_hint() const |
73 | { | |
74 | return QSize(0, RulerHeight + | |
75 | (text_height_ + Padding + BaselineOffset) / 2); | |
76 | } | |
77 | ||
e314eca4 | 78 | void Ruler::paintEvent(QPaintEvent*) |
ccdd3ef5 | 79 | { |
f260e3bf | 80 | const int ValueMargin = 3; |
3f509c1f | 81 | |
ccdd3ef5 | 82 | QPainter p(this); |
ce6e73a8 | 83 | p.setRenderHint(QPainter::Antialiasing); |
ccdd3ef5 | 84 | |
361c560e JH |
85 | const double tick_period = view_.tick_period(); |
86 | const unsigned int prefix = view_.tick_prefix(); | |
1b5813fe | 87 | |
ccdd3ef5 | 88 | // Draw the tick marks |
d2caed8d | 89 | p.setPen(palette().color(foregroundRole())); |
ccdd3ef5 JH |
90 | |
91 | const double minor_tick_period = tick_period / MinorTickSubdivision; | |
92 | const double first_major_division = | |
8dbbc7f0 | 93 | floor(view_.offset() / tick_period); |
ccdd3ef5 | 94 | const double first_minor_division = |
8dbbc7f0 | 95 | ceil(view_.offset() / minor_tick_period); |
ccdd3ef5 JH |
96 | const double t0 = first_major_division * tick_period; |
97 | ||
98 | int division = (int)round(first_minor_division - | |
64b678ba | 99 | first_major_division * MinorTickSubdivision) - 1; |
f260e3bf | 100 | |
819e2e95 JH |
101 | const int major_tick_y1 = text_height_ + ValueMargin * 2; |
102 | const int tick_y2 = RulerHeight; | |
f260e3bf JH |
103 | const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2; |
104 | ||
64b678ba | 105 | double x; |
ccdd3ef5 | 106 | |
64b678ba JH |
107 | do { |
108 | const double t = t0 + division * minor_tick_period; | |
8dbbc7f0 | 109 | x = (t - view_.offset()) / view_.scale(); |
ccdd3ef5 | 110 | |
333d5bbc | 111 | if (division % MinorTickSubdivision == 0) |
ccdd3ef5 JH |
112 | { |
113 | // Draw a major tick | |
819e2e95 | 114 | p.drawText(x, ValueMargin, 0, text_height_, |
f260e3bf | 115 | AlignCenter | AlignTop | TextDontClip, |
f0c9f81c | 116 | pv::util::format_time(t, prefix)); |
f260e3bf JH |
117 | p.drawLine(QPointF(x, major_tick_y1), |
118 | QPointF(x, tick_y2)); | |
ccdd3ef5 JH |
119 | } |
120 | else | |
121 | { | |
122 | // Draw a minor tick | |
f260e3bf JH |
123 | p.drawLine(QPointF(x, minor_tick_y1), |
124 | QPointF(x, tick_y2)); | |
ccdd3ef5 JH |
125 | } |
126 | ||
127 | division++; | |
64b678ba JH |
128 | |
129 | } while (x < width()); | |
ccdd3ef5 | 130 | |
b3a7c013 JH |
131 | // Draw the hover mark |
132 | draw_hover_mark(p); | |
819e2e95 JH |
133 | |
134 | // The cursor labels are not drawn with the arrows exactly on the | |
135 | // bottom line of the widget, because then the selection shadow | |
136 | // would be clipped away. | |
137 | const QRect r = rect().adjusted(0, 0, 0, -BaselineOffset); | |
138 | ||
139 | // Draw the items | |
140 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
49028d6c JH |
141 | for (auto &i : items) { |
142 | const bool highlight = !dragging_ && | |
143 | i->label_rect(r).contains(mouse_point_); | |
144 | i->paint_label(p, r, highlight); | |
145 | } | |
819e2e95 JH |
146 | } |
147 | ||
148 | void Ruler::mouseMoveEvent(QMouseEvent *e) | |
149 | { | |
150 | mouse_point_ = e->pos(); | |
151 | ||
152 | if (!(e->buttons() & Qt::LeftButton)) | |
153 | return; | |
154 | ||
155 | if ((e->pos() - mouse_down_point_).manhattanLength() < | |
156 | QApplication::startDragDistance()) | |
157 | return; | |
158 | ||
159 | // Do the drag | |
160 | dragging_ = true; | |
161 | ||
162 | const int delta = e->pos().x() - mouse_down_point_.x(); | |
163 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
164 | for (auto &i : items) | |
165 | if (i->dragging()) | |
166 | i->set_time(view_.offset() + | |
167 | (i->drag_point().x() + delta - 0.5) * | |
168 | view_.scale()); | |
169 | } | |
170 | ||
171 | void Ruler::mousePressEvent(QMouseEvent *e) | |
172 | { | |
173 | if (e->buttons() & Qt::LeftButton) { | |
174 | mouse_down_point_ = e->pos(); | |
175 | ||
176 | mouse_down_item_.reset(); | |
177 | ||
178 | clear_selection(); | |
179 | ||
180 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
181 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
182 | if ((*i)->label_rect(rect()).contains(e->pos())) { | |
183 | mouse_down_item_ = (*i); | |
184 | break; | |
185 | } | |
186 | ||
187 | if (mouse_down_item_) { | |
188 | mouse_down_item_->select(); | |
189 | mouse_down_item_->drag(); | |
190 | } | |
191 | ||
192 | selection_changed(); | |
193 | } | |
194 | } | |
195 | ||
196 | void Ruler::mouseReleaseEvent(QMouseEvent *) | |
197 | { | |
198 | using pv::widgets::Popup; | |
199 | ||
200 | if (!dragging_ && mouse_down_item_) { | |
201 | Popup *const p = mouse_down_item_->create_popup(&view_); | |
202 | if (p) { | |
203 | const QPoint arrpos(mouse_down_item_->get_x(), | |
204 | height() - BaselineOffset); | |
205 | p->set_position(mapToGlobal(arrpos), Popup::Bottom); | |
206 | p->show(); | |
207 | } | |
208 | } | |
209 | ||
210 | dragging_ = false; | |
211 | mouse_down_item_.reset(); | |
212 | ||
213 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
214 | for (auto &i : items) | |
215 | i->drag_release(); | |
216 | } | |
217 | ||
218 | void Ruler::leaveEvent(QEvent*) | |
219 | { | |
220 | mouse_point_ = QPoint(-1, -1); | |
221 | update(); | |
222 | } | |
223 | ||
224 | void Ruler::mouseDoubleClickEvent(QMouseEvent *e) | |
225 | { | |
226 | view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale()); | |
227 | } | |
228 | ||
229 | void Ruler::keyPressEvent(QKeyEvent *e) | |
230 | { | |
231 | assert(e); | |
232 | ||
233 | if (e->key() == Qt::Key_Delete) | |
234 | { | |
235 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
236 | for (auto &i : items) | |
237 | if (i->selected()) | |
238 | i->delete_pressed(); | |
239 | } | |
ca4ec3ea JH |
240 | } |
241 | ||
b3a7c013 JH |
242 | void Ruler::draw_hover_mark(QPainter &p) |
243 | { | |
8dbbc7f0 | 244 | const int x = view_.hover_point().x(); |
333d5bbc | 245 | |
84a0d458 | 246 | if (x == -1) |
b3a7c013 JH |
247 | return; |
248 | ||
249 | p.setPen(QPen(Qt::NoPen)); | |
ad1d8e2b | 250 | p.setBrush(QBrush(palette().color(foregroundRole()))); |
b3a7c013 | 251 | |
819e2e95 | 252 | const int b = RulerHeight; |
b3a7c013 JH |
253 | const QPointF points[] = { |
254 | QPointF(x, b), | |
255 | QPointF(x - HoverArrowSize, b - HoverArrowSize), | |
256 | QPointF(x + HoverArrowSize, b - HoverArrowSize) | |
257 | }; | |
258 | p.drawPolygon(points, countof(points)); | |
259 | } | |
260 | ||
819e2e95 JH |
261 | int Ruler::calculate_text_height() |
262 | { | |
263 | QFontMetrics fm(font()); | |
264 | return fm.boundingRect(0, 0, INT_MAX, INT_MAX, | |
265 | Qt::AlignLeft | Qt::AlignTop, "8").height(); | |
266 | } | |
267 | ||
b3a7c013 JH |
268 | void Ruler::hover_point_changed() |
269 | { | |
270 | update(); | |
271 | } | |
272 | ||
ccdd3ef5 JH |
273 | } // namespace view |
274 | } // namespace pv |