]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * This file is part of the PulseView project. | |
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 | ||
21 | #include <extdef.h> | |
22 | ||
23 | #include <QApplication> | |
24 | #include <QFontMetrics> | |
25 | #include <QMenu> | |
26 | #include <QMouseEvent> | |
27 | ||
28 | #include "ruler.hpp" | |
29 | #include "view.hpp" | |
30 | ||
31 | #include <pv/util.hpp> | |
32 | ||
33 | using namespace Qt; | |
34 | ||
35 | using std::shared_ptr; | |
36 | using std::vector; | |
37 | ||
38 | namespace pv { | |
39 | namespace view { | |
40 | ||
41 | const float Ruler::RulerHeight = 2.5f; // x Text Height | |
42 | const int Ruler::MinorTickSubdivision = 4; | |
43 | ||
44 | const float Ruler::HoverArrowSize = 0.5f; // x Text Height | |
45 | ||
46 | Ruler::Ruler(View &parent) : | |
47 | MarginWidget(parent) | |
48 | { | |
49 | setMouseTracking(true); | |
50 | ||
51 | connect(&view_, SIGNAL(hover_point_changed()), | |
52 | this, SLOT(hover_point_changed())); | |
53 | } | |
54 | ||
55 | void Ruler::clear_selection() | |
56 | { | |
57 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
58 | for (auto &i : items) | |
59 | i->select(false); | |
60 | update(); | |
61 | } | |
62 | ||
63 | QSize Ruler::sizeHint() const | |
64 | { | |
65 | const int text_height = calculate_text_height(); | |
66 | return QSize(0, RulerHeight * text_height); | |
67 | } | |
68 | ||
69 | QSize Ruler::extended_size_hint() const | |
70 | { | |
71 | QRectF max_rect; | |
72 | std::vector< std::shared_ptr<TimeItem> > items(view_.time_items()); | |
73 | for (auto &i : items) | |
74 | max_rect = max_rect.united(i->label_rect(QRect())); | |
75 | return QSize(0, sizeHint().height() - max_rect.top() / 2 + | |
76 | ViewItem::HighlightRadius); | |
77 | } | |
78 | ||
79 | vector< shared_ptr<ViewItem> > Ruler::items() | |
80 | { | |
81 | const vector< shared_ptr<TimeItem> > time_items(view_.time_items()); | |
82 | return vector< shared_ptr<ViewItem> >( | |
83 | time_items.begin(), time_items.end()); | |
84 | } | |
85 | ||
86 | shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt) | |
87 | { | |
88 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
89 | for (auto i = items.rbegin(); i != items.rend(); i++) | |
90 | if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt)) | |
91 | return *i; | |
92 | return nullptr; | |
93 | } | |
94 | ||
95 | void Ruler::paintEvent(QPaintEvent*) | |
96 | { | |
97 | const int ValueMargin = 3; | |
98 | ||
99 | QPainter p(this); | |
100 | p.setRenderHint(QPainter::Antialiasing); | |
101 | ||
102 | const double tick_period = view_.tick_period(); | |
103 | const unsigned int prefix = view_.tick_prefix(); | |
104 | ||
105 | // Draw the tick marks | |
106 | p.setPen(palette().color(foregroundRole())); | |
107 | ||
108 | const double minor_tick_period = tick_period / MinorTickSubdivision; | |
109 | const double first_major_division = | |
110 | floor(view_.offset() / tick_period); | |
111 | const double first_minor_division = | |
112 | ceil(view_.offset() / minor_tick_period); | |
113 | const double t0 = first_major_division * tick_period; | |
114 | ||
115 | int division = (int)round(first_minor_division - | |
116 | first_major_division * MinorTickSubdivision) - 1; | |
117 | ||
118 | const int text_height = calculate_text_height(); | |
119 | const int ruler_height = RulerHeight * text_height; | |
120 | const int major_tick_y1 = text_height + ValueMargin * 2; | |
121 | const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2; | |
122 | ||
123 | double x; | |
124 | ||
125 | do { | |
126 | const double t = t0 + division * minor_tick_period; | |
127 | x = (t - view_.offset()) / view_.scale(); | |
128 | ||
129 | if (division % MinorTickSubdivision == 0) | |
130 | { | |
131 | // Draw a major tick | |
132 | p.drawText(x, ValueMargin, 0, text_height, | |
133 | AlignCenter | AlignTop | TextDontClip, | |
134 | pv::util::format_time(t, prefix)); | |
135 | p.drawLine(QPointF(x, major_tick_y1), | |
136 | QPointF(x, ruler_height)); | |
137 | } | |
138 | else | |
139 | { | |
140 | // Draw a minor tick | |
141 | p.drawLine(QPointF(x, minor_tick_y1), | |
142 | QPointF(x, ruler_height)); | |
143 | } | |
144 | ||
145 | division++; | |
146 | ||
147 | } while (x < width()); | |
148 | ||
149 | // Draw the hover mark | |
150 | draw_hover_mark(p, text_height); | |
151 | ||
152 | // The cursor labels are not drawn with the arrows exactly on the | |
153 | // bottom line of the widget, because then the selection shadow | |
154 | // would be clipped away. | |
155 | const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius); | |
156 | ||
157 | // Draw the items | |
158 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
159 | for (auto &i : items) { | |
160 | const bool highlight = !dragging_ && | |
161 | i->label_rect(r).contains(mouse_point_); | |
162 | i->paint_label(p, r, highlight); | |
163 | } | |
164 | } | |
165 | ||
166 | void Ruler::mouseMoveEvent(QMouseEvent *e) | |
167 | { | |
168 | mouse_point_ = e->pos(); | |
169 | ||
170 | if (!(e->buttons() & Qt::LeftButton)) | |
171 | return; | |
172 | ||
173 | if ((e->pos() - mouse_down_point_).manhattanLength() < | |
174 | QApplication::startDragDistance()) | |
175 | return; | |
176 | ||
177 | // Do the drag | |
178 | dragging_ = true; | |
179 | ||
180 | const QPoint delta = e->pos() - mouse_down_point_; | |
181 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
182 | for (auto &i : items) | |
183 | if (i->dragging()) | |
184 | i->drag_by(delta); | |
185 | } | |
186 | ||
187 | void Ruler::mousePressEvent(QMouseEvent *e) | |
188 | { | |
189 | if (e->buttons() & Qt::LeftButton) { | |
190 | mouse_down_point_ = e->pos(); | |
191 | mouse_down_item_ = get_mouse_over_item(e->pos()); | |
192 | ||
193 | clear_selection(); | |
194 | ||
195 | if (mouse_down_item_) { | |
196 | mouse_down_item_->select(); | |
197 | mouse_down_item_->drag(); | |
198 | } | |
199 | ||
200 | selection_changed(); | |
201 | } | |
202 | } | |
203 | ||
204 | void Ruler::mouseReleaseEvent(QMouseEvent *) | |
205 | { | |
206 | using pv::widgets::Popup; | |
207 | ||
208 | if (!dragging_ && mouse_down_item_) | |
209 | show_popup(mouse_down_item_); | |
210 | ||
211 | dragging_ = false; | |
212 | mouse_down_item_.reset(); | |
213 | ||
214 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
215 | for (auto &i : items) | |
216 | i->drag_release(); | |
217 | } | |
218 | ||
219 | void Ruler::mouseDoubleClickEvent(QMouseEvent *e) | |
220 | { | |
221 | view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale()); | |
222 | } | |
223 | ||
224 | void Ruler::contextMenuEvent(QContextMenuEvent *event) | |
225 | { | |
226 | const shared_ptr<ViewItem> r = get_mouse_over_item(mouse_point_); | |
227 | if (!r) | |
228 | return; | |
229 | ||
230 | QMenu *menu = r->create_context_menu(this); | |
231 | if (menu) | |
232 | menu->exec(event->globalPos()); | |
233 | } | |
234 | ||
235 | void Ruler::keyPressEvent(QKeyEvent *e) | |
236 | { | |
237 | assert(e); | |
238 | ||
239 | if (e->key() == Qt::Key_Delete) | |
240 | { | |
241 | const vector< shared_ptr<TimeItem> > items(view_.time_items()); | |
242 | for (auto &i : items) | |
243 | if (i->selected()) | |
244 | i->delete_pressed(); | |
245 | } | |
246 | } | |
247 | ||
248 | void Ruler::draw_hover_mark(QPainter &p, int text_height) | |
249 | { | |
250 | const int x = view_.hover_point().x(); | |
251 | ||
252 | if (x == -1) | |
253 | return; | |
254 | ||
255 | p.setPen(QPen(Qt::NoPen)); | |
256 | p.setBrush(QBrush(palette().color(foregroundRole()))); | |
257 | ||
258 | const int b = RulerHeight * text_height; | |
259 | const float hover_arrow_size = HoverArrowSize * text_height; | |
260 | const QPointF points[] = { | |
261 | QPointF(x, b), | |
262 | QPointF(x - hover_arrow_size, b - hover_arrow_size), | |
263 | QPointF(x + hover_arrow_size, b - hover_arrow_size) | |
264 | }; | |
265 | p.drawPolygon(points, countof(points)); | |
266 | } | |
267 | ||
268 | int Ruler::calculate_text_height() const | |
269 | { | |
270 | return QFontMetrics(font()).ascent(); | |
271 | } | |
272 | ||
273 | void Ruler::hover_point_changed() | |
274 | { | |
275 | update(); | |
276 | } | |
277 | ||
278 | } // namespace view | |
279 | } // namespace pv |