pv/view/header.cpp

   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 <boost/foreach.hpp>
  30
  31 #include <QApplication>
  32 #include <QColorDialog>
  33 #include <QInputDialog>
  34 #include <QMenu>
  35 #include <QMouseEvent>
  36 #include <QPainter>
  37 #include <QRect>
  38
  39 using namespace boost;
  40 using namespace std;
  41
  42 namespace pv {
  43 namespace view {
  44
  45 Header::Header(View &parent) :
  46         QWidget(&parent),
  47         _view(parent),
  48         _action_set_name(new QAction(tr("Set &Name..."), this)),
  49         _action_set_colour(new QAction(tr("Set &Colour..."), this))
  50 {
  51         setMouseTracking(true);
  52
  53         connect(_action_set_name, SIGNAL(triggered()),
  54                 this, SLOT(on_action_set_name_triggered()));
  55         connect(_action_set_colour, SIGNAL(triggered()),
  56                 this, SLOT(on_action_set_colour_triggered()));
  57 }
  58
  59 boost::shared_ptr<pv::view::Signal> Header::get_mouse_over_signal(
  60         const QPoint &pt)
  61 {
  62         const int w = width();
  63         const vector< shared_ptr<Signal> > &sigs =
  64                 _view.session().get_signals();
  65
  66         const int v_offset = _view.v_offset();
  67         BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
  68         {
  69                 assert(s);
  70
  71                 const QRect signal_heading_rect(
  72                         0, s->get_v_offset() - v_offset,
  73                         w, View::SignalHeight);
  74
  75                 if(s->pt_in_label_rect(signal_heading_rect, pt))
  76                         return s;
  77         }
  78
  79         return shared_ptr<Signal>();
  80 }
  81
  82 void Header::paintEvent(QPaintEvent *event)
  83 {
  84         const int w = width();
  85         const vector< shared_ptr<Signal> > &sigs =
  86                 _view.session().get_signals();
  87
  88         QPainter painter(this);
  89         painter.setRenderHint(QPainter::Antialiasing);
  90
  91         const int v_offset = _view.v_offset();
  92         BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
  93         {
  94                 assert(s);
  95
  96                 const QRect signal_heading_rect(
  97                         0, s->get_v_offset() - v_offset,
  98                         w, View::SignalHeight);
  99
 100                 s->paint_label(painter, signal_heading_rect,
 101                         s->pt_in_label_rect(signal_heading_rect, _mouse_point));
 102         }
 103
 104         painter.end();
 105 }
 106
 107 void Header::mousePressEvent(QMouseEvent *event)
 108 {
 109         assert(event);
 110
 111         const vector< shared_ptr<Signal> > &sigs =
 112                 _view.session().get_signals();
 113
 114         if(~QApplication::keyboardModifiers() & Qt::ControlModifier) {
 115                 // Unselect all other signals because the Ctrl is not
 116                 // pressed
 117                 BOOST_FOREACH(const shared_ptr<Signal> s, sigs)
 118                         s->select(false);
 119         }
 120
 121         // Select the signal if it has been clicked
 122         const shared_ptr<Signal> mouse_over_signal =
 123                 get_mouse_over_signal(event->pos());
 124         if(mouse_over_signal)
 125                 mouse_over_signal->select(!mouse_over_signal->selected());
 126
 127         update();
 128 }
 129
 130 void Header::mouseMoveEvent(QMouseEvent *event)
 131 {
 132         assert(event);
 133         _mouse_point = event->pos();
 134         update();
 135 }
 136
 137 void Header::leaveEvent(QEvent *event)
 138 {
 139         _mouse_point = QPoint(-1, -1);
 140         update();
 141 }
 142
 143 void Header::contextMenuEvent(QContextMenuEvent *event)
 144 {
 145         const shared_ptr<Signal> s = get_mouse_over_signal(_mouse_point);
 146
 147         if(!s)
 148                 return;
 149
 150         QMenu menu(this);
 151         menu.addAction(_action_set_name);
 152         menu.addAction(_action_set_colour);
 153
 154         _context_signal = s;
 155         menu.exec(event->globalPos());
 156         _context_signal.reset();
 157 }
 158
 159 void Header::on_action_set_name_triggered()
 160 {
 161         shared_ptr<view::Signal> context_signal = _context_signal;
 162         if(!context_signal)
 163                 return;
 164
 165         const QString new_label = QInputDialog::getText(this, tr("Set Name"),
 166                 tr("Name"), QLineEdit::Normal, context_signal->get_name());
 167
 168         if(!new_label.isEmpty())
 169                 context_signal->set_name(new_label);
 170 }
 171
 172 void Header::on_action_set_colour_triggered()
 173 {
 174         shared_ptr<view::Signal> context_signal = _context_signal;
 175         if(!context_signal)
 176                 return;
 177
 178         const QColor new_colour = QColorDialog::getColor(
 179                 context_signal->get_colour(), this, tr("Set Colour"));
 180
 181         if(new_colour.isValid())
 182                 context_signal->set_colour(new_colour);
 183 }
 184
 185 } // namespace view
 186 } // namespace pv