pv/views/trace/flag.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2014 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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "timemarker.hpp"
  21 #include "view.hpp"
  22 #include "ruler.hpp"
  23
  24 #include <QColor>
  25 #include <QFormLayout>
  26 #include <QLineEdit>
  27 #include <QMenu>
  28 #include <QApplication>
  29
  30 #include <libsigrokcxx/libsigrokcxx.hpp>
  31
  32 #include <pv/widgets/popup.hpp>
  33
  34 using std::enable_shared_from_this;
  35 using std::shared_ptr;
  36
  37 namespace pv {
  38 namespace views {
  39 namespace trace {
  40
  41 const QColor Flag::FillColor(0x73, 0xD2, 0x16);
  42
  43 Flag::Flag(View &view, const pv::util::Timestamp& time, const QString &text) :
  44         TimeMarker(view, FillColor, time),
  45         text_(text)
  46 {
  47 }
  48
  49 Flag::Flag(const Flag &flag) :
  50         TimeMarker(flag.view_, FillColor, flag.time_),
  51         enable_shared_from_this<Flag>(flag)
  52 {
  53 }
  54
  55 bool Flag::enabled() const
  56 {
  57         return true;
  58 }
  59
  60 QString Flag::get_text() const
  61 {
  62         const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
  63         if (ref_item == nullptr || ref_item.get() == this) {
  64                 return text_;
  65         } else {
  66                 return Ruler::format_time_with_distance(
  67                         ref_item->time(), ref_item->delta(time_),
  68                         view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
  69         }
  70 }
  71
  72 QRectF Flag::label_rect(const QRectF &rect) const
  73 {
  74         const shared_ptr<TimeItem> ref_item = view_.get_reference_time_item();
  75         if (ref_item == nullptr || ref_item.get() == this) {
  76                 return TimeMarker::label_rect(rect);
  77
  78         } else {
  79                 // TODO: Remove code duplication between here and cursor.cpp
  80                 const float x = get_x();
  81
  82                 QFontMetrics m(QApplication::font());
  83                 QSize text_size = m.boundingRect(get_text()).size();
  84
  85                 const QSizeF label_size(
  86                         text_size.width() + LabelPadding.width() * 2,
  87                         text_size.height() + LabelPadding.height() * 2);
  88                 const float top = rect.height() - label_size.height() -
  89                         TimeMarker::ArrowSize - 0.5f;
  90                 const float height = label_size.height();
  91
  92                 const pv::util::Timestamp& delta = ref_item->delta(time_);
  93
  94                 if (delta >= 0)
  95                         return QRectF(x, top, label_size.width(), height);
  96                 else
  97                         return QRectF(x - label_size.width(), top, label_size.width(), height);
  98         }
  99 }
 100
 101 pv::widgets::Popup* Flag::create_popup(QWidget *parent)
 102 {
 103         using pv::widgets::Popup;
 104
 105         Popup *const popup = TimeMarker::create_popup(parent);
 106         popup->set_position(parent->mapToGlobal(
 107                 drag_point(parent->rect())), Popup::Bottom);
 108
 109         QFormLayout *const form = (QFormLayout*)popup->layout();
 110
 111         QLineEdit *const text_edit = new QLineEdit(popup);
 112         text_edit->setText(text_);
 113
 114         connect(text_edit, SIGNAL(textChanged(const QString&)),
 115                 this, SLOT(on_text_changed(const QString&)));
 116
 117         form->insertRow(0, tr("Text"), text_edit);
 118
 119         return popup;
 120 }
 121
 122 QMenu* Flag::create_header_context_menu(QWidget *parent)
 123 {
 124         QMenu *const menu = new QMenu(parent);
 125
 126         QAction *const del = new QAction(tr("Delete"), this);
 127         del->setShortcuts(QKeySequence::Delete);
 128         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 129         menu->addAction(del);
 130
 131         return menu;
 132 }
 133
 134 void Flag::delete_pressed()
 135 {
 136         on_delete();
 137 }
 138
 139 void Flag::on_delete()
 140 {
 141         view_.remove_flag(shared_ptr<Flag>(shared_from_this()));
 142 }
 143
 144 void Flag::on_text_changed(const QString &text)
 145 {
 146         text_ = text;
 147         view_.time_item_appearance_changed(true, false);
 148 }
 149
 150 } // namespace trace
 151 } // namespace views
 152 } // namespace pv