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
21 #include "cursorheader.hpp"
26 #include <QApplication>
27 #include <QFontMetrics>
28 #include <QMouseEvent>
30 #include <pv/widgets/popup.hpp>
32 using std::shared_ptr;
38 const int CursorHeader::Padding = 20;
39 const int CursorHeader::BaselineOffset = 5;
41 int CursorHeader::calculateTextHeight()
43 QFontMetrics fm(font());
44 return fm.boundingRect(0, 0, INT_MAX, INT_MAX,
45 Qt::AlignLeft | Qt::AlignTop, "8").height();
48 CursorHeader::CursorHeader(View &parent) :
50 textHeight_(calculateTextHeight())
52 setMouseTracking(true);
55 QSize CursorHeader::sizeHint() const
57 return QSize(0, textHeight_ + Padding + BaselineOffset);
60 void CursorHeader::clear_selection()
62 const vector< shared_ptr<TimeItem> > items(view_.time_items());
68 void CursorHeader::paintEvent(QPaintEvent*)
71 p.setRenderHint(QPainter::Antialiasing);
73 // The cursor labels are not drawn with the arrows exactly on the
74 // bottom line of the widget, because then the selection shadow
75 // would be clipped away.
76 const QRect r = rect().adjusted(0, 0, 0, -BaselineOffset);
79 const vector< shared_ptr<TimeItem> > items(view_.time_items());
84 void CursorHeader::mouseMoveEvent(QMouseEvent *e)
86 mouse_point_ = e->pos();
88 if (!(e->buttons() & Qt::LeftButton))
91 if ((e->pos() - mouse_down_point_).manhattanLength() <
92 QApplication::startDragDistance())
98 const int delta = e->pos().x() - mouse_down_point_.x();
99 const vector< shared_ptr<TimeItem> > items(view_.time_items());
100 for (auto &i : items)
102 i->set_time(view_.offset() +
103 (i->drag_point().x() + delta) * view_.scale());
106 void CursorHeader::mousePressEvent(QMouseEvent *e)
108 if (e->buttons() & Qt::LeftButton) {
109 mouse_down_point_ = e->pos();
111 mouse_down_item_.reset();
115 const vector< shared_ptr<TimeItem> > items(view_.time_items());
116 for (auto &i : items)
117 if (i && i->label_rect(rect()).contains(e->pos())) {
118 mouse_down_item_ = i;
122 if (mouse_down_item_) {
123 mouse_down_item_->select();
124 mouse_down_item_->drag();
131 void CursorHeader::mouseReleaseEvent(QMouseEvent *)
133 using pv::widgets::Popup;
135 if (!dragging_ && mouse_down_item_) {
136 Popup *const p = mouse_down_item_->create_popup(&view_);
138 const QPoint arrpos(mouse_down_item_->get_x(),
139 height() - BaselineOffset);
140 p->set_position(mapToGlobal(arrpos), Popup::Bottom);
146 mouse_down_item_.reset();
148 const vector< shared_ptr<TimeItem> > items(view_.time_items());
149 for (auto &i : items)
153 void CursorHeader::leaveEvent(QEvent*)
155 mouse_point_ = QPoint(-1, -1);