pv/view/signal.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 <extdef.h>
  22
  23 #include <assert.h>
  24 #include <math.h>
  25
  26 #include <QApplication>
  27
  28 #include "signal.h"
  29 #include "view.h"
  30
  31 namespace pv {
  32 namespace view {
  33
  34 const int Signal::LabelHitPadding = 2;
  35
  36 const QPen Signal::SignalAxisPen(QColor(128, 128, 128, 64));
  37
  38 const char *const ProbeNames[] = {
  39         "CLK",
  40         "DATA",
  41         "IN",
  42         "OUT",
  43         "RST",
  44         "Tx",
  45         "Rx",
  46         "EN",
  47         "SCLK",
  48         "MOSI",
  49         "MISO",
  50         "/SS",
  51         "SDA",
  52         "SCL"
  53 };
  54
  55 Signal::Signal(const sr_probe *const probe) :
  56         _probe(probe),
  57         _name(probe->name),
  58         _v_offset(0),
  59         _name_action(NULL),
  60         _name_widget(),
  61         _updating_name_widget(false)
  62 {
  63         assert(_probe);
  64
  65         _name_action.setDefaultWidget(&_name_widget);
  66
  67         _name_widget.setEditable(true);
  68         for(unsigned int i = 0; i < countof(ProbeNames); i++)
  69                 _name_widget.insertItem(i, ProbeNames[i]);
  70         _name_widget.setEditText(probe->name);
  71
  72         connect(&_name_widget, SIGNAL(editTextChanged(const QString&)),
  73                 this, SLOT(on_text_changed(const QString&)));
  74 }
  75
  76 QString Signal::get_name() const
  77 {
  78         return _name;
  79 }
  80
  81 void Signal::set_name(QString name)
  82 {
  83         _name = name;
  84         _updating_name_widget = true;
  85         _name_widget.setEditText(name);
  86         _updating_name_widget = false;
  87 }
  88
  89 QColor Signal::get_colour() const
  90 {
  91         return _colour;
  92 }
  93
  94 void Signal::set_colour(QColor colour)
  95 {
  96         _colour = colour;
  97 }
  98
  99 int Signal::get_v_offset() const
 100 {
 101         return _v_offset;
 102 }
 103
 104 void Signal::set_v_offset(int v_offset)
 105 {
 106         _v_offset = v_offset;
 107 }
 108
 109 void Signal::paint_label(QPainter &p, int y, int right, bool hover)
 110 {
 111         p.setBrush(_colour);
 112
 113         if (!_probe->enabled)
 114                 return;
 115
 116         const QColor colour = get_colour();
 117
 118         compute_text_size(p);
 119         const QRectF label_rect = get_label_rect(y, right);
 120
 121         // Paint the label
 122         const QPointF points[] = {
 123                 label_rect.topLeft(),
 124                 label_rect.topRight(),
 125                 QPointF(right, y),
 126                 label_rect.bottomRight(),
 127                 label_rect.bottomLeft()
 128         };
 129
 130         const QPointF highlight_points[] = {
 131                 QPointF(label_rect.left() + 1, label_rect.top() + 1),
 132                 QPointF(label_rect.right(), label_rect.top() + 1),
 133                 QPointF(right - 1, y),
 134                 QPointF(label_rect.right(), label_rect.bottom() - 1),
 135                 QPointF(label_rect.left() + 1, label_rect.bottom() - 1)
 136         };
 137
 138         if (selected()) {
 139                 p.setPen(highlight_pen());
 140                 p.setBrush(Qt::transparent);
 141                 p.drawPolygon(points, countof(points));
 142         }
 143
 144         p.setPen(Qt::transparent);
 145         p.setBrush(hover ? colour.lighter() : colour);
 146         p.drawPolygon(points, countof(points));
 147
 148         p.setPen(colour.lighter());
 149         p.setBrush(Qt::transparent);
 150         p.drawPolygon(highlight_points, countof(highlight_points));
 151
 152         p.setPen(colour.darker());
 153         p.setBrush(Qt::transparent);
 154         p.drawPolygon(points, countof(points));
 155
 156         // Paint the text
 157         p.setPen((colour.lightness() > 64) ? Qt::black : Qt::white);
 158         p.drawText(label_rect, Qt::AlignCenter | Qt::AlignVCenter, _name);
 159 }
 160
 161 bool Signal::pt_in_label_rect(int y, int left, int right,
 162         const QPoint &point)
 163 {
 164         (void)left;
 165
 166         const QRectF label = get_label_rect(y, right);
 167         return QRectF(
 168                 QPointF(label.left() - LabelHitPadding,
 169                         label.top() - LabelHitPadding),
 170                 QPointF(right, label.bottom() + LabelHitPadding)
 171                         ).contains(point);
 172 }
 173
 174 void Signal::paint_axis(QPainter &p, int y, int left, int right)
 175 {
 176         p.setPen(SignalAxisPen);
 177         p.drawLine(QPointF(left, y + 0.5f), QPointF(right, y + 0.5f));
 178 }
 179
 180 void Signal::compute_text_size(QPainter &p)
 181 {
 182         _text_size = QSize(
 183                 p.boundingRect(QRectF(), 0, _name).width(),
 184                 p.boundingRect(QRectF(), 0, "Tg").height());
 185 }
 186
 187 QRectF Signal::get_label_rect(int y, int right)
 188 {
 189         using pv::view::View;
 190
 191         const QSizeF label_size(
 192                 _text_size.width() + View::LabelPadding.width() * 2,
 193                 ceilf((_text_size.height() + View::LabelPadding.height() * 2) / 2) * 2);
 194         const float label_arrow_length = label_size.height() / 2;
 195         return QRectF(
 196                 right - label_arrow_length - label_size.width() - 0.5,
 197                 y + 0.5f - label_size.height() / 2,
 198                 label_size.width(), label_size.height());
 199 }
 200
 201 void Signal::on_text_changed(const QString &text)
 202 {
 203         _name = text;
 204         text_changed();
 205 }
 206
 207 } // namespace view
 208 } // namespace pv