]>
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 "header.h" | |
22 | #include "view.h" | |
23 | ||
24 | #include "signal.h" | |
25 | #include "../sigsession.h" | |
26 | ||
27 | #include <cassert> | |
28 | #include <algorithm> | |
29 | ||
30 | #include <QApplication> | |
31 | #include <QMenu> | |
32 | #include <QMouseEvent> | |
33 | #include <QPainter> | |
34 | #include <QRect> | |
35 | ||
36 | #include <pv/widgets/popup.h> | |
37 | ||
38 | using std::max; | |
39 | using std::make_pair; | |
40 | using std::pair; | |
41 | using std::shared_ptr; | |
42 | using std::stable_sort; | |
43 | using std::vector; | |
44 | ||
45 | namespace pv { | |
46 | namespace view { | |
47 | ||
48 | const int Header::Padding = 12; | |
49 | const int Header::BaselineOffset = 5; | |
50 | ||
51 | Header::Header(View &parent) : | |
52 | MarginWidget(parent), | |
53 | _dragging(false) | |
54 | { | |
55 | setFocusPolicy(Qt::ClickFocus); | |
56 | setMouseTracking(true); | |
57 | ||
58 | connect(&_view, SIGNAL(signals_moved()), | |
59 | this, SLOT(on_signals_moved())); | |
60 | } | |
61 | ||
62 | QSize Header::sizeHint() const | |
63 | { | |
64 | QRectF max_rect(-Padding, 0, Padding, 0); | |
65 | for (auto &i : _view) | |
66 | if (i->enabled()) | |
67 | max_rect = max_rect.united(i->label_rect(0)); | |
68 | return QSize(max_rect.width() + Padding + BaselineOffset, 0); | |
69 | } | |
70 | ||
71 | shared_ptr<RowItem> Header::get_mouse_over_row_item(const QPoint &pt) | |
72 | { | |
73 | const int w = width() - BaselineOffset; | |
74 | for (auto &i : _view) | |
75 | if (i->enabled() && i->label_rect(w).contains(pt)) | |
76 | return i; | |
77 | return shared_ptr<RowItem>(); | |
78 | } | |
79 | ||
80 | void Header::clear_selection() | |
81 | { | |
82 | for (auto &i : _view) | |
83 | i->select(false); | |
84 | update(); | |
85 | } | |
86 | ||
87 | void Header::signals_updated() | |
88 | { | |
89 | for (shared_ptr<RowItem> r : _view) { | |
90 | assert(r); | |
91 | connect(r.get(), SIGNAL(appearance_changed()), | |
92 | this, SLOT(on_trace_changed())); | |
93 | } | |
94 | } | |
95 | ||
96 | void Header::show_popup(const shared_ptr<RowItem> &item) | |
97 | { | |
98 | using pv::widgets::Popup; | |
99 | ||
100 | Popup *const p = item->create_popup(&_view); | |
101 | if (!p) | |
102 | return; | |
103 | ||
104 | const QPoint pt(width() - BaselineOffset, item->get_y()); | |
105 | p->set_position(mapToGlobal(pt), Popup::Right); | |
106 | p->show(); | |
107 | } | |
108 | ||
109 | void Header::paintEvent(QPaintEvent*) | |
110 | { | |
111 | // The trace labels are not drawn with the arrows exactly on the | |
112 | // left edge of the widget, because then the selection shadow | |
113 | // would be clipped away. | |
114 | const int w = width() - BaselineOffset; | |
115 | ||
116 | vector< shared_ptr<RowItem> > row_items( | |
117 | _view.begin(), _view.end()); | |
118 | ||
119 | stable_sort(row_items.begin(), row_items.end(), | |
120 | [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) { | |
121 | return a->v_offset() < b->v_offset(); }); | |
122 | ||
123 | QPainter painter(this); | |
124 | painter.setRenderHint(QPainter::Antialiasing); | |
125 | ||
126 | const bool dragging = !_drag_row_items.empty(); | |
127 | for (const shared_ptr<RowItem> r : row_items) | |
128 | { | |
129 | assert(r); | |
130 | ||
131 | const bool highlight = !dragging && | |
132 | r->label_rect(w).contains(_mouse_point); | |
133 | r->paint_label(painter, w, highlight); | |
134 | } | |
135 | ||
136 | painter.end(); | |
137 | } | |
138 | ||
139 | void Header::mouseLeftPressEvent(QMouseEvent *event) | |
140 | { | |
141 | const bool ctrl_pressed = | |
142 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
143 | ||
144 | // Clear selection if control is not pressed and this item is unselected | |
145 | const shared_ptr<RowItem> mouse_over = | |
146 | get_mouse_over_row_item(event->pos()); | |
147 | if (!ctrl_pressed && (!mouse_over || !mouse_over->selected())) | |
148 | for (shared_ptr<RowItem> r : _view) | |
149 | r->select(false); | |
150 | ||
151 | // Set the signal selection state if the item has been clicked | |
152 | if (mouse_over) { | |
153 | if (ctrl_pressed) | |
154 | mouse_over->select(!mouse_over->selected()); | |
155 | else | |
156 | mouse_over->select(true); | |
157 | } | |
158 | ||
159 | // Save the offsets of any signals which will be dragged | |
160 | _mouse_down_point = event->pos(); | |
161 | for (const shared_ptr<RowItem> r : _view) | |
162 | if (r->selected()) | |
163 | _drag_row_items.push_back( | |
164 | make_pair(r, r->v_offset())); | |
165 | ||
166 | selection_changed(); | |
167 | update(); | |
168 | } | |
169 | ||
170 | void Header::mousePressEvent(QMouseEvent *event) | |
171 | { | |
172 | assert(event); | |
173 | if (event->button() & Qt::LeftButton) | |
174 | mouseLeftPressEvent(event); | |
175 | } | |
176 | ||
177 | void Header::mouseLeftReleaseEvent(QMouseEvent *event) | |
178 | { | |
179 | assert(event); | |
180 | ||
181 | const bool ctrl_pressed = | |
182 | QApplication::keyboardModifiers() & Qt::ControlModifier; | |
183 | ||
184 | // Unselect everything if control is not pressed | |
185 | const shared_ptr<RowItem> mouse_over = | |
186 | get_mouse_over_row_item(event->pos()); | |
187 | ||
188 | if (_dragging) | |
189 | _view.normalize_layout(); | |
190 | else | |
191 | { | |
192 | if (!ctrl_pressed) { | |
193 | for (shared_ptr<RowItem> r : _view) | |
194 | if (mouse_over != r) | |
195 | r->select(false); | |
196 | ||
197 | if (mouse_over) | |
198 | show_popup(mouse_over); | |
199 | } | |
200 | } | |
201 | ||
202 | _dragging = false; | |
203 | _drag_row_items.clear(); | |
204 | } | |
205 | ||
206 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
207 | { | |
208 | assert(event); | |
209 | if (event->button() & Qt::LeftButton) | |
210 | mouseLeftReleaseEvent(event); | |
211 | } | |
212 | ||
213 | void Header::mouseMoveEvent(QMouseEvent *event) | |
214 | { | |
215 | assert(event); | |
216 | _mouse_point = event->pos(); | |
217 | ||
218 | if (!(event->buttons() & Qt::LeftButton)) | |
219 | return; | |
220 | ||
221 | if ((event->pos() - _mouse_down_point).manhattanLength() < | |
222 | QApplication::startDragDistance()) | |
223 | return; | |
224 | ||
225 | // Check the list of dragging items is not empty | |
226 | if (_drag_row_items.empty()) | |
227 | return; | |
228 | ||
229 | // Check all the drag items share a common owner | |
230 | const shared_ptr<RowItem> first_row_item( | |
231 | _drag_row_items.front().first); | |
232 | for (const auto &r : _drag_row_items) { | |
233 | const shared_ptr<RowItem> row_item(r.first); | |
234 | assert(row_item); | |
235 | ||
236 | if (row_item->owner() != first_row_item->owner()) | |
237 | return; | |
238 | } | |
239 | ||
240 | // Do the drag | |
241 | _dragging = true; | |
242 | ||
243 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
244 | ||
245 | for (auto i = _drag_row_items.begin(); | |
246 | i != _drag_row_items.end(); i++) { | |
247 | const std::shared_ptr<RowItem> row_item((*i).first); | |
248 | if (row_item) { | |
249 | const int y = (*i).second + delta; | |
250 | row_item->set_v_offset(y); | |
251 | ||
252 | // Ensure the trace is selected | |
253 | row_item->select(); | |
254 | } | |
255 | } | |
256 | ||
257 | signals_moved(); | |
258 | ||
259 | update(); | |
260 | } | |
261 | ||
262 | void Header::leaveEvent(QEvent*) | |
263 | { | |
264 | _mouse_point = QPoint(-1, -1); | |
265 | update(); | |
266 | } | |
267 | ||
268 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
269 | { | |
270 | const shared_ptr<RowItem> r = get_mouse_over_row_item(_mouse_point); | |
271 | if (!r) | |
272 | return; | |
273 | ||
274 | QMenu *const menu = r->create_context_menu(this); | |
275 | if (!menu) | |
276 | return; | |
277 | ||
278 | menu->exec(event->globalPos()); | |
279 | } | |
280 | ||
281 | void Header::keyPressEvent(QKeyEvent *e) | |
282 | { | |
283 | assert(e); | |
284 | ||
285 | switch (e->key()) | |
286 | { | |
287 | case Qt::Key_Delete: | |
288 | { | |
289 | for (const shared_ptr<RowItem> r : _view) | |
290 | if (r->selected()) | |
291 | r->delete_pressed(); | |
292 | break; | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | void Header::on_signals_moved() | |
298 | { | |
299 | update(); | |
300 | } | |
301 | ||
302 | void Header::on_trace_changed() | |
303 | { | |
304 | update(); | |
305 | geometry_updated(); | |
306 | } | |
307 | ||
308 | } // namespace view | |
309 | } // namespace pv |