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
75 max_width = max(max_width, (int)i->label_rect(0).width());
77 return QSize(max_width + Padding + BaselineOffset, 0);
80 shared_ptr<RowItem> Header::get_mouse_over_row_item(const QPoint &pt)
82 const int w = width() - BaselineOffset;
84 if (i->enabled() && i->label_rect(w).contains(pt))
86 return shared_ptr<RowItem>();
89 void Header::clear_selection()
96 void Header::show_popup(const shared_ptr<RowItem> &item)
98 using pv::widgets::Popup;
100 Popup *const p = item->create_popup(&_view);
104 const QPoint pt(width() - BaselineOffset, item->get_y());
105 p->set_position(mapToGlobal(pt), Popup::Right);
109 void Header::paintEvent(QPaintEvent*)
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;
116 vector< shared_ptr<RowItem> > row_items(
117 _view.begin(), _view.end());
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(); });
123 QPainter painter(this);
124 painter.setRenderHint(QPainter::Antialiasing);
126 const bool dragging = !_drag_row_items.empty();
127 for (const shared_ptr<RowItem> r : row_items)
131 const bool highlight = !dragging &&
132 r->label_rect(w).contains(_mouse_point);
133 r->paint_label(painter, w, highlight);
139 void Header::mousePressEvent(QMouseEvent *event)
143 if (event->button() & Qt::LeftButton) {
144 _mouse_down_point = event->pos();
146 // Save the offsets of any signals which will be dragged
147 for (const shared_ptr<RowItem> r : _view)
149 _drag_row_items.push_back(
150 make_pair(r, r->v_offset()));
153 // Select the signal if it has been clicked
154 const shared_ptr<RowItem> mouse_over_row_item =
155 get_mouse_over_row_item(event->pos());
156 if (mouse_over_row_item) {
157 if (mouse_over_row_item->selected())
158 mouse_over_row_item->select(false);
160 mouse_over_row_item->select(true);
162 if (~QApplication::keyboardModifiers() &
164 _drag_row_items.clear();
166 // Add the signal to the drag list
167 if (event->button() & Qt::LeftButton)
168 _drag_row_items.push_back(
169 make_pair(mouse_over_row_item,
170 mouse_over_row_item->v_offset()));
174 if (~QApplication::keyboardModifiers() & Qt::ControlModifier) {
175 // Unselect all other signals because the Ctrl is not
177 for (const shared_ptr<RowItem> r : _view)
178 if (r != mouse_over_row_item)
186 void Header::mouseReleaseEvent(QMouseEvent *event)
189 if (event->button() == Qt::LeftButton) {
191 _view.normalize_layout();
194 const shared_ptr<RowItem> mouse_over_row_item =
195 get_mouse_over_row_item(event->pos());
196 if (mouse_over_row_item)
197 show_popup(mouse_over_row_item);
201 _drag_row_items.clear();
205 void Header::mouseMoveEvent(QMouseEvent *event)
208 _mouse_point = event->pos();
210 if (!(event->buttons() & Qt::LeftButton))
213 if ((event->pos() - _mouse_down_point).manhattanLength() <
214 QApplication::startDragDistance())
217 // Move the signals if we are dragging
218 if (!_drag_row_items.empty())
222 const int delta = event->pos().y() - _mouse_down_point.y();
224 for (auto i = _drag_row_items.begin();
225 i != _drag_row_items.end(); i++) {
226 const std::shared_ptr<RowItem> row_item((*i).first);
228 const int y = (*i).second + delta;
230 ((y + View::SignalSnapGridSize / 2) /
231 View::SignalSnapGridSize) *
232 View::SignalSnapGridSize;
233 row_item->set_v_offset(y_snap);
235 // Ensure the trace is selected
247 void Header::leaveEvent(QEvent*)
249 _mouse_point = QPoint(-1, -1);
253 void Header::contextMenuEvent(QContextMenuEvent *event)
255 const shared_ptr<RowItem> r = get_mouse_over_row_item(_mouse_point);
259 QMenu *const menu = r->create_context_menu(this);
263 menu->exec(event->globalPos());
266 void Header::keyPressEvent(QKeyEvent *e)
274 for (const shared_ptr<RowItem> r : _view)
282 void Header::on_signals_changed()
284 for (shared_ptr<RowItem> r : _view) {
286 connect(r.get(), SIGNAL(visibility_changed()),
287 this, SLOT(on_trace_changed()));
288 connect(r.get(), SIGNAL(text_changed()),
289 this, SLOT(on_trace_changed()));
290 connect(r.get(), SIGNAL(colour_changed()),
291 this, SLOT(update()));
295 void Header::on_signals_moved()
300 void Header::on_trace_changed()