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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 "header.hpp" | |
22 | #include "view.hpp" | |
23 | ||
24 | #include "signal.hpp" | |
25 | #include "tracegroup.hpp" | |
26 | ||
27 | #include <cassert> | |
28 | #include <algorithm> | |
29 | ||
30 | #include <boost/iterator/filter_iterator.hpp> | |
31 | ||
32 | #include <QApplication> | |
33 | #include <QMenu> | |
34 | #include <QMouseEvent> | |
35 | #include <QPainter> | |
36 | #include <QRect> | |
37 | ||
38 | #include <pv/session.hpp> | |
39 | #include <pv/widgets/popup.hpp> | |
40 | ||
41 | using boost::make_filter_iterator; | |
42 | using std::dynamic_pointer_cast; | |
43 | using std::max; | |
44 | using std::make_pair; | |
45 | using std::min; | |
46 | using std::pair; | |
47 | using std::shared_ptr; | |
48 | using std::stable_sort; | |
49 | using std::vector; | |
50 | ||
51 | namespace pv { | |
52 | namespace view { | |
53 | ||
54 | const int Header::Padding = 12; | |
55 | const int Header::BaselineOffset = 5; | |
56 | ||
57 | static bool item_selected(shared_ptr<RowItem> r) | |
58 | { | |
59 | return r->selected(); | |
60 | } | |
61 | ||
62 | Header::Header(View &parent) : | |
63 | MarginWidget(parent) | |
64 | { | |
65 | connect(&view_, SIGNAL(signals_moved()), | |
66 | this, SLOT(on_signals_moved())); | |
67 | } | |
68 | ||
69 | QSize Header::sizeHint() const | |
70 | { | |
71 | QRectF max_rect(-Padding, 0, Padding, 0); | |
72 | for (auto &i : view_) | |
73 | if (i->enabled()) | |
74 | max_rect = max_rect.united(i->label_rect(QRect())); | |
75 | return QSize(max_rect.width() + Padding + BaselineOffset, 0); | |
76 | } | |
77 | ||
78 | QSize Header::extended_size_hint() const | |
79 | { | |
80 | return sizeHint() + QSize(ViewItem::HighlightRadius, 0); | |
81 | } | |
82 | ||
83 | shared_ptr<RowItem> Header::get_mouse_over_item(const QPoint &pt) | |
84 | { | |
85 | const QRect r(0, 0, width() - BaselineOffset, height()); | |
86 | for (auto &i : view_) | |
87 | if (i->enabled() && i->label_rect(r).contains(pt)) | |
88 | return i; | |
89 | return shared_ptr<RowItem>(); | |
90 | } | |
91 | ||
92 | void Header::clear_selection() | |
93 | { | |
94 | for (auto &i : view_) | |
95 | i->select(false); | |
96 | update(); | |
97 | } | |
98 | ||
99 | void Header::show_popup(const shared_ptr<RowItem> &item) | |
100 | { | |
101 | using pv::widgets::Popup; | |
102 | ||
103 | Popup *const p = item->create_popup(&view_); | |
104 | if (!p) | |
105 | return; | |
106 | ||
107 | const QPoint pt(width() - BaselineOffset, item->get_visual_y()); | |
108 | p->set_position(mapToGlobal(pt), Popup::Right); | |
109 | p->show(); | |
110 | } | |
111 | ||
112 | void Header::paintEvent(QPaintEvent*) | |
113 | { | |
114 | // The trace labels are not drawn with the arrows exactly on the | |
115 | // left edge of the widget, because then the selection shadow | |
116 | // would be clipped away. | |
117 | const QRect rect(0, 0, width() - BaselineOffset, height()); | |
118 | ||
119 | vector< shared_ptr<RowItem> > row_items( | |
120 | view_.begin(), view_.end()); | |
121 | ||
122 | stable_sort(row_items.begin(), row_items.end(), | |
123 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
124 | return a->visual_v_offset() < b->visual_v_offset(); }); | |
125 | ||
126 | QPainter painter(this); | |
127 | painter.setRenderHint(QPainter::Antialiasing); | |
128 | ||
129 | for (const shared_ptr<RowItem> r : row_items) | |
130 | { | |
131 | assert(r); | |
132 | ||
133 | const bool highlight = !dragging_ && | |
134 | r->label_rect(rect).contains(mouse_point_); | |
135 | r->paint_label(painter, rect, highlight); | |
136 | } | |
137 | ||
138 | painter.end(); | |
139 | } | |
140 | ||
141 | void Header::mouseLeftPressEvent(QMouseEvent *event) | |
142 | { | |
143 | (void)event; | |
144 | ||
145 | const bool ctrl_pressed = | |
146 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
147 | ||
148 | // Clear selection if control is not pressed and this item is unselected | |
149 | if ((!mouse_down_item_ || !mouse_down_item_->selected()) && | |
150 | !ctrl_pressed) | |
151 | for (shared_ptr<RowItem> r : view_) | |
152 | r->select(false); | |
153 | ||
154 | // Set the signal selection state if the item has been clicked | |
155 | if (mouse_down_item_) { | |
156 | if (ctrl_pressed) | |
157 | mouse_down_item_->select(!mouse_down_item_->selected()); | |
158 | else | |
159 | mouse_down_item_->select(true); | |
160 | } | |
161 | ||
162 | // Save the offsets of any signals which will be dragged | |
163 | for (const shared_ptr<RowItem> r : view_) | |
164 | if (r->selected()) | |
165 | r->drag(); | |
166 | ||
167 | selection_changed(); | |
168 | update(); | |
169 | } | |
170 | ||
171 | void Header::mousePressEvent(QMouseEvent *event) | |
172 | { | |
173 | assert(event); | |
174 | ||
175 | mouse_down_point_ = event->pos(); | |
176 | mouse_down_item_ = get_mouse_over_item(event->pos()); | |
177 | ||
178 | if (event->button() & Qt::LeftButton) | |
179 | mouseLeftPressEvent(event); | |
180 | } | |
181 | ||
182 | void Header::mouseLeftReleaseEvent(QMouseEvent *event) | |
183 | { | |
184 | assert(event); | |
185 | ||
186 | const bool ctrl_pressed = | |
187 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
188 | ||
189 | // Unselect everything if control is not pressed | |
190 | const shared_ptr<RowItem> mouse_over = | |
191 | get_mouse_over_item(event->pos()); | |
192 | ||
193 | for (auto &r : view_) | |
194 | r->drag_release(); | |
195 | ||
196 | if (dragging_) | |
197 | view_.restack_all_row_items(); | |
198 | else | |
199 | { | |
200 | if (!ctrl_pressed) { | |
201 | for (shared_ptr<RowItem> r : view_) | |
202 | if (mouse_down_item_ != r) | |
203 | r->select(false); | |
204 | ||
205 | if (mouse_down_item_) | |
206 | show_popup(mouse_down_item_); | |
207 | } | |
208 | } | |
209 | ||
210 | dragging_ = false; | |
211 | } | |
212 | ||
213 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
214 | { | |
215 | assert(event); | |
216 | if (event->button() & Qt::LeftButton) | |
217 | mouseLeftReleaseEvent(event); | |
218 | ||
219 | mouse_down_item_ = nullptr; | |
220 | } | |
221 | ||
222 | void Header::mouseMoveEvent(QMouseEvent *event) | |
223 | { | |
224 | assert(event); | |
225 | mouse_point_ = event->pos(); | |
226 | ||
227 | if (!(event->buttons() & Qt::LeftButton)) | |
228 | return; | |
229 | ||
230 | if ((event->pos() - mouse_down_point_).manhattanLength() < | |
231 | QApplication::startDragDistance()) | |
232 | return; | |
233 | ||
234 | // Check all the drag items share a common owner | |
235 | RowItemOwner *item_owner = nullptr; | |
236 | for (shared_ptr<RowItem> r : view_) | |
237 | if (r->dragging()) { | |
238 | if (!item_owner) | |
239 | item_owner = r->owner(); | |
240 | else if(item_owner != r->owner()) | |
241 | return; | |
242 | } | |
243 | ||
244 | if (!item_owner) | |
245 | return; | |
246 | ||
247 | // Do the drag | |
248 | dragging_ = true; | |
249 | ||
250 | const int delta = event->pos().y() - mouse_down_point_.y(); | |
251 | ||
252 | for (std::shared_ptr<RowItem> r : view_) | |
253 | if (r->dragging()) { | |
254 | r->force_to_v_offset(r->drag_point().y() + delta); | |
255 | ||
256 | // Ensure the trace is selected | |
257 | r->select(); | |
258 | } | |
259 | ||
260 | item_owner->restack_items(); | |
261 | for (const auto &r : *item_owner) | |
262 | r->animate_to_layout_v_offset(); | |
263 | signals_moved(); | |
264 | ||
265 | update(); | |
266 | } | |
267 | ||
268 | void Header::leaveEvent(QEvent*) | |
269 | { | |
270 | mouse_point_ = QPoint(-1, -1); | |
271 | update(); | |
272 | } | |
273 | ||
274 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
275 | { | |
276 | const shared_ptr<RowItem> r = get_mouse_over_item(mouse_point_); | |
277 | if (!r) | |
278 | return; | |
279 | ||
280 | QMenu *menu = r->create_context_menu(this); | |
281 | if (!menu) | |
282 | menu = new QMenu(this); | |
283 | ||
284 | if (std::count_if(view_.begin(), view_.end(), item_selected) > 1) | |
285 | { | |
286 | menu->addSeparator(); | |
287 | ||
288 | QAction *const group = new QAction(tr("Group"), this); | |
289 | QList<QKeySequence> shortcuts; | |
290 | shortcuts.append(QKeySequence(Qt::ControlModifier | Qt::Key_G)); | |
291 | group->setShortcuts(shortcuts); | |
292 | connect(group, SIGNAL(triggered()), this, SLOT(on_group())); | |
293 | menu->addAction(group); | |
294 | } | |
295 | ||
296 | menu->exec(event->globalPos()); | |
297 | } | |
298 | ||
299 | void Header::keyPressEvent(QKeyEvent *e) | |
300 | { | |
301 | assert(e); | |
302 | ||
303 | if (e->key() == Qt::Key_Delete) | |
304 | { | |
305 | for (const shared_ptr<RowItem> r : view_) | |
306 | if (r->selected()) | |
307 | r->delete_pressed(); | |
308 | } | |
309 | else if (e->key() == Qt::Key_G && e->modifiers() == Qt::ControlModifier) | |
310 | on_group(); | |
311 | else if (e->key() == Qt::Key_U && e->modifiers() == Qt::ControlModifier) | |
312 | on_ungroup(); | |
313 | } | |
314 | ||
315 | void Header::on_signals_moved() | |
316 | { | |
317 | update(); | |
318 | } | |
319 | ||
320 | void Header::on_group() | |
321 | { | |
322 | vector< shared_ptr<RowItem> > selected_items( | |
323 | make_filter_iterator(item_selected, view_.begin(), view_.end()), | |
324 | make_filter_iterator(item_selected, view_.end(), view_.end())); | |
325 | stable_sort(selected_items.begin(), selected_items.end(), | |
326 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
327 | return a->visual_v_offset() < b->visual_v_offset(); }); | |
328 | ||
329 | shared_ptr<TraceGroup> group(new TraceGroup()); | |
330 | shared_ptr<RowItem> focus_item( | |
331 | mouse_down_item_ ? mouse_down_item_ : selected_items.front()); | |
332 | ||
333 | assert(focus_item); | |
334 | assert(focus_item->owner()); | |
335 | focus_item->owner()->add_child_item(group); | |
336 | ||
337 | // Set the group v_offset here before reparenting | |
338 | group->force_to_v_offset(focus_item->layout_v_offset() + | |
339 | focus_item->v_extents().first); | |
340 | ||
341 | for (size_t i = 0; i < selected_items.size(); i++) { | |
342 | const shared_ptr<RowItem> &r = selected_items[i]; | |
343 | assert(r->owner()); | |
344 | r->owner()->remove_child_item(r); | |
345 | group->add_child_item(r); | |
346 | ||
347 | // Put the items at 1-pixel offsets, so that restack will | |
348 | // stack them in the right order | |
349 | r->set_layout_v_offset(i); | |
350 | } | |
351 | } | |
352 | ||
353 | void Header::on_ungroup() | |
354 | { | |
355 | bool restart; | |
356 | do { | |
357 | restart = false; | |
358 | for (const shared_ptr<RowItem> r : view_) { | |
359 | const shared_ptr<TraceGroup> tg = | |
360 | dynamic_pointer_cast<TraceGroup>(r); | |
361 | if (tg && tg->selected()) { | |
362 | tg->ungroup(); | |
363 | restart = true; | |
364 | break; | |
365 | } | |
366 | } | |
367 | } while(restart); | |
368 | } | |
369 | ||
370 | } // namespace view | |
371 | } // namespace pv |