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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.h" | |
22 | #include "view.h" | |
23 | ||
24 | #include "signal.h" | |
25 | #include "../sigsession.h" | |
26 | ||
27 | #include <assert.h> | |
28 | ||
29 | #include <QApplication> | |
30 | #include <QMenu> | |
31 | #include <QMouseEvent> | |
32 | #include <QPainter> | |
33 | #include <QRect> | |
34 | ||
35 | #include <pv/widgets/popup.h> | |
36 | ||
37 | using std::max; | |
38 | using std::make_pair; | |
39 | using std::pair; | |
40 | using std::shared_ptr; | |
41 | using std::vector; | |
42 | ||
43 | namespace pv { | |
44 | namespace view { | |
45 | ||
46 | const int Header::Padding = 12; | |
47 | const int Header::BaselineOffset = 5; | |
48 | ||
49 | Header::Header(View &parent) : | |
50 | MarginWidget(parent), | |
51 | _dragging(false) | |
52 | { | |
53 | setFocusPolicy(Qt::ClickFocus); | |
54 | setMouseTracking(true); | |
55 | ||
56 | connect(&_view.session(), SIGNAL(signals_changed()), | |
57 | this, SLOT(on_signals_changed())); | |
58 | ||
59 | connect(&_view, SIGNAL(signals_moved()), | |
60 | this, SLOT(on_signals_moved())); | |
61 | ||
62 | // Trigger the initial event manually. The default device has signals | |
63 | // which were created before this object came into being | |
64 | on_signals_changed(); | |
65 | } | |
66 | ||
67 | QSize Header::sizeHint() const | |
68 | { | |
69 | int max_width = 0; | |
70 | ||
71 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
72 | for (shared_ptr<RowItem> r : row_items) { | |
73 | assert(r); | |
74 | ||
75 | if (r->enabled()) { | |
76 | max_width = max(max_width, (int)r->label_rect(0).width()); | |
77 | } | |
78 | } | |
79 | ||
80 | return QSize(max_width + Padding + BaselineOffset, 0); | |
81 | } | |
82 | ||
83 | shared_ptr<RowItem> Header::get_mouse_over_row_item(const QPoint &pt) | |
84 | { | |
85 | const int w = width() - BaselineOffset; | |
86 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
87 | ||
88 | for (const shared_ptr<RowItem> r : row_items) | |
89 | { | |
90 | assert(r); | |
91 | if (r->enabled() && r->label_rect(w).contains(pt)) | |
92 | return r; | |
93 | } | |
94 | ||
95 | return shared_ptr<RowItem>(); | |
96 | } | |
97 | ||
98 | void Header::clear_selection() | |
99 | { | |
100 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
101 | for (const shared_ptr<RowItem> r : row_items) { | |
102 | assert(r); | |
103 | r->select(false); | |
104 | } | |
105 | ||
106 | update(); | |
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 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
116 | ||
117 | QPainter painter(this); | |
118 | painter.setRenderHint(QPainter::Antialiasing); | |
119 | ||
120 | const bool dragging = !_drag_row_items.empty(); | |
121 | for (const shared_ptr<RowItem> r : row_items) | |
122 | { | |
123 | assert(r); | |
124 | ||
125 | const bool highlight = !dragging && | |
126 | r->label_rect(w).contains(_mouse_point); | |
127 | r->paint_label(painter, w, highlight); | |
128 | } | |
129 | ||
130 | painter.end(); | |
131 | } | |
132 | ||
133 | void Header::mousePressEvent(QMouseEvent *event) | |
134 | { | |
135 | assert(event); | |
136 | ||
137 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
138 | ||
139 | if (event->button() & Qt::LeftButton) { | |
140 | _mouse_down_point = event->pos(); | |
141 | ||
142 | // Save the offsets of any signals which will be dragged | |
143 | for (const shared_ptr<RowItem> r : row_items) | |
144 | if (r->selected()) | |
145 | _drag_row_items.push_back( | |
146 | make_pair(r, r->v_offset())); | |
147 | } | |
148 | ||
149 | // Select the signal if it has been clicked | |
150 | const shared_ptr<RowItem> mouse_over_row_item = | |
151 | get_mouse_over_row_item(event->pos()); | |
152 | if (mouse_over_row_item) { | |
153 | if (mouse_over_row_item->selected()) | |
154 | mouse_over_row_item->select(false); | |
155 | else { | |
156 | mouse_over_row_item->select(true); | |
157 | ||
158 | if (~QApplication::keyboardModifiers() & | |
159 | Qt::ControlModifier) | |
160 | _drag_row_items.clear(); | |
161 | ||
162 | // Add the signal to the drag list | |
163 | if (event->button() & Qt::LeftButton) | |
164 | _drag_row_items.push_back( | |
165 | make_pair(mouse_over_row_item, | |
166 | mouse_over_row_item->v_offset())); | |
167 | } | |
168 | } | |
169 | ||
170 | if (~QApplication::keyboardModifiers() & Qt::ControlModifier) { | |
171 | // Unselect all other signals because the Ctrl is not | |
172 | // pressed | |
173 | for (const shared_ptr<RowItem> r : row_items) | |
174 | if (r != mouse_over_row_item) | |
175 | r->select(false); | |
176 | } | |
177 | ||
178 | selection_changed(); | |
179 | update(); | |
180 | } | |
181 | ||
182 | void Header::mouseReleaseEvent(QMouseEvent *event) | |
183 | { | |
184 | using pv::widgets::Popup; | |
185 | ||
186 | assert(event); | |
187 | if (event->button() == Qt::LeftButton) { | |
188 | if (_dragging) | |
189 | _view.normalize_layout(); | |
190 | else | |
191 | { | |
192 | const shared_ptr<RowItem> mouse_over_row_item = | |
193 | get_mouse_over_row_item(event->pos()); | |
194 | if (mouse_over_row_item) { | |
195 | const int w = width() - BaselineOffset; | |
196 | Popup *const p = | |
197 | mouse_over_row_item->create_popup(&_view); | |
198 | p->set_position(mapToGlobal(QPoint(w, | |
199 | mouse_over_row_item->get_y())), | |
200 | Popup::Right); | |
201 | p->show(); | |
202 | } | |
203 | } | |
204 | ||
205 | _dragging = false; | |
206 | _drag_row_items.clear(); | |
207 | } | |
208 | } | |
209 | ||
210 | void Header::mouseMoveEvent(QMouseEvent *event) | |
211 | { | |
212 | assert(event); | |
213 | _mouse_point = event->pos(); | |
214 | ||
215 | if (!(event->buttons() & Qt::LeftButton)) | |
216 | return; | |
217 | ||
218 | if ((event->pos() - _mouse_down_point).manhattanLength() < | |
219 | QApplication::startDragDistance()) | |
220 | return; | |
221 | ||
222 | // Move the signals if we are dragging | |
223 | if (!_drag_row_items.empty()) | |
224 | { | |
225 | _dragging = true; | |
226 | ||
227 | const int delta = event->pos().y() - _mouse_down_point.y(); | |
228 | ||
229 | for (auto i = _drag_row_items.begin(); | |
230 | i != _drag_row_items.end(); i++) { | |
231 | const std::shared_ptr<RowItem> row_item((*i).first); | |
232 | if (row_item) { | |
233 | const int y = (*i).second + delta; | |
234 | const int y_snap = | |
235 | ((y + View::SignalSnapGridSize / 2) / | |
236 | View::SignalSnapGridSize) * | |
237 | View::SignalSnapGridSize; | |
238 | row_item->set_v_offset(y_snap); | |
239 | ||
240 | // Ensure the trace is selected | |
241 | row_item->select(); | |
242 | } | |
243 | ||
244 | } | |
245 | ||
246 | signals_moved(); | |
247 | } | |
248 | ||
249 | update(); | |
250 | } | |
251 | ||
252 | void Header::leaveEvent(QEvent*) | |
253 | { | |
254 | _mouse_point = QPoint(-1, -1); | |
255 | update(); | |
256 | } | |
257 | ||
258 | void Header::contextMenuEvent(QContextMenuEvent *event) | |
259 | { | |
260 | const shared_ptr<RowItem> r = get_mouse_over_row_item(_mouse_point); | |
261 | ||
262 | if (r) | |
263 | r->create_context_menu(this)->exec(event->globalPos()); | |
264 | } | |
265 | ||
266 | void Header::keyPressEvent(QKeyEvent *e) | |
267 | { | |
268 | assert(e); | |
269 | ||
270 | switch (e->key()) | |
271 | { | |
272 | case Qt::Key_Delete: | |
273 | { | |
274 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
275 | for (const shared_ptr<RowItem> r : row_items) | |
276 | if (r->selected()) | |
277 | r->delete_pressed(); | |
278 | break; | |
279 | } | |
280 | } | |
281 | } | |
282 | ||
283 | void Header::on_signals_changed() | |
284 | { | |
285 | const vector< shared_ptr<RowItem> > row_items(_view.child_items()); | |
286 | for (shared_ptr<RowItem> r : row_items) { | |
287 | assert(r); | |
288 | connect(r.get(), SIGNAL(visibility_changed()), | |
289 | this, SLOT(on_trace_changed())); | |
290 | connect(r.get(), SIGNAL(text_changed()), | |
291 | this, SLOT(on_trace_changed())); | |
292 | connect(r.get(), SIGNAL(colour_changed()), | |
293 | this, SLOT(update())); | |
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 |