2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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
25 #include "../sigsession.h"
30 #include <QApplication>
32 #include <QMouseEvent>
36 #include <pv/widgets/popup.h>
41 using std::shared_ptr;
42 using std::stable_sort;
48 const int Header::Padding = 12;
49 const int Header::BaselineOffset = 5;
51 Header::Header(View &parent) :
55 setFocusPolicy(Qt::ClickFocus);
56 setMouseTracking(true);
58 connect(&_view.session(), SIGNAL(signals_changed()),
59 this, SLOT(on_signals_changed()));
61 connect(&_view, SIGNAL(signals_moved()),
62 this, SLOT(on_signals_moved()));
64 // Trigger the initial event manually. The default device has signals
65 // which were created before this object came into being
69 QSize Header::sizeHint() const
73 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
74 for (shared_ptr<RowItem> r : row_items) {
78 max_width = max(max_width, (int)r->label_rect(0).width());
82 return QSize(max_width + Padding + BaselineOffset, 0);
85 shared_ptr<RowItem> Header::get_mouse_over_row_item(const QPoint &pt)
87 const int w = width() - BaselineOffset;
88 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
90 for (const shared_ptr<RowItem> r : row_items)
93 if (r->enabled() && r->label_rect(w).contains(pt))
97 return shared_ptr<RowItem>();
100 void Header::clear_selection()
102 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
103 for (const shared_ptr<RowItem> r : row_items) {
111 void Header::show_popup(const shared_ptr<RowItem> &item)
113 using pv::widgets::Popup;
115 Popup *const p = item->create_popup(&_view);
119 const QPoint pt(width() - BaselineOffset, item->get_y());
120 p->set_position(mapToGlobal(pt), Popup::Right);
124 void Header::paintEvent(QPaintEvent*)
126 // The trace labels are not drawn with the arrows exactly on the
127 // left edge of the widget, because then the selection shadow
128 // would be clipped away.
129 const int w = width() - BaselineOffset;
131 vector< shared_ptr<RowItem> > row_items(_view.child_items());
132 stable_sort(row_items.begin(), row_items.end(),
133 [](const shared_ptr<RowItem> &a, const shared_ptr<RowItem> &b) {
134 return a->v_offset() < b->v_offset(); });
136 QPainter painter(this);
137 painter.setRenderHint(QPainter::Antialiasing);
139 const bool dragging = !_drag_row_items.empty();
140 for (const shared_ptr<RowItem> r : row_items)
144 const bool highlight = !dragging &&
145 r->label_rect(w).contains(_mouse_point);
146 r->paint_label(painter, w, highlight);
152 void Header::mousePressEvent(QMouseEvent *event)
156 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
158 if (event->button() & Qt::LeftButton) {
159 _mouse_down_point = event->pos();
161 // Save the offsets of any signals which will be dragged
162 for (const shared_ptr<RowItem> r : row_items)
164 _drag_row_items.push_back(
165 make_pair(r, r->v_offset()));
168 // Select the signal if it has been clicked
169 const shared_ptr<RowItem> mouse_over_row_item =
170 get_mouse_over_row_item(event->pos());
171 if (mouse_over_row_item) {
172 if (mouse_over_row_item->selected())
173 mouse_over_row_item->select(false);
175 mouse_over_row_item->select(true);
177 if (~QApplication::keyboardModifiers() &
179 _drag_row_items.clear();
181 // Add the signal to the drag list
182 if (event->button() & Qt::LeftButton)
183 _drag_row_items.push_back(
184 make_pair(mouse_over_row_item,
185 mouse_over_row_item->v_offset()));
189 if (~QApplication::keyboardModifiers() & Qt::ControlModifier) {
190 // Unselect all other signals because the Ctrl is not
192 for (const shared_ptr<RowItem> r : row_items)
193 if (r != mouse_over_row_item)
201 void Header::mouseReleaseEvent(QMouseEvent *event)
204 if (event->button() == Qt::LeftButton) {
206 _view.normalize_layout();
209 const shared_ptr<RowItem> mouse_over_row_item =
210 get_mouse_over_row_item(event->pos());
211 if (mouse_over_row_item)
212 show_popup(mouse_over_row_item);
216 _drag_row_items.clear();
220 void Header::mouseMoveEvent(QMouseEvent *event)
223 _mouse_point = event->pos();
225 if (!(event->buttons() & Qt::LeftButton))
228 if ((event->pos() - _mouse_down_point).manhattanLength() <
229 QApplication::startDragDistance())
232 // Move the signals if we are dragging
233 if (!_drag_row_items.empty())
237 const int delta = event->pos().y() - _mouse_down_point.y();
239 for (auto i = _drag_row_items.begin();
240 i != _drag_row_items.end(); i++) {
241 const std::shared_ptr<RowItem> row_item((*i).first);
243 const int y = (*i).second + delta;
245 ((y + View::SignalSnapGridSize / 2) /
246 View::SignalSnapGridSize) *
247 View::SignalSnapGridSize;
248 row_item->set_v_offset(y_snap);
250 // Ensure the trace is selected
262 void Header::leaveEvent(QEvent*)
264 _mouse_point = QPoint(-1, -1);
268 void Header::contextMenuEvent(QContextMenuEvent *event)
270 const shared_ptr<RowItem> r = get_mouse_over_row_item(_mouse_point);
274 QMenu *const menu = r->create_context_menu(this);
278 menu->exec(event->globalPos());
281 void Header::keyPressEvent(QKeyEvent *e)
289 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
290 for (const shared_ptr<RowItem> r : row_items)
298 void Header::on_signals_changed()
300 const vector< shared_ptr<RowItem> > row_items(_view.child_items());
301 for (shared_ptr<RowItem> r : row_items) {
303 connect(r.get(), SIGNAL(visibility_changed()),
304 this, SLOT(on_trace_changed()));
305 connect(r.get(), SIGNAL(text_changed()),
306 this, SLOT(on_trace_changed()));
307 connect(r.get(), SIGNAL(colour_changed()),
308 this, SLOT(update()));
312 void Header::on_signals_moved()
317 void Header::on_trace_changed()