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 /**
  61  * Returns the text used to display this flag item. This is not necessarily the
  62  * name that the user has given it.
  63  */
  64 QString Flag::get_display_text() const
  65 {
  66         QString s;
  67
  68         const shared_ptr<TimeItem> ref_item = view_.ruler()->get_reference_item();
  69
  70         if (!ref_item || (ref_item.get() == this))
  71                 s = text_;
  72         else
  73                 s = Ruler::format_time_with_distance(
  74                         ref_item->time(), ref_item->delta(time_),
  75                         view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
  76
  77         return s;
  78 }
  79
  80 /**
  81  * Returns the text of this flag item, i.e. the user-editable name.
  82  */
  83 QString Flag::get_text() const
  84 {
  85         return text_;
  86 }
  87
  88 void Flag::set_text(const QString &text)
  89 {
  90         text_ = text;
  91         view_.time_item_appearance_changed(true, false);
  92 }
  93
  94 QRectF Flag::label_rect(const QRectF &rect) const
  95 {
  96         QRectF r;
  97
  98         const shared_ptr<TimeItem> ref_item = view_.ruler()->get_reference_item();
  99
 100         if (!ref_item || (ref_item.get() == this)) {
 101                 r = TimeMarker::label_rect(rect);
 102         } else {
 103                 // TODO: Remove code duplication between here and cursor.cpp
 104                 const float x = get_x();
 105
 106                 QFontMetrics m(QApplication::font());
 107                 QSize text_size = m.boundingRect(get_display_text()).size();
 108
 109                 const QSizeF label_size(
 110                         text_size.width() + LabelPadding.width() * 2,
 111                         text_size.height() + LabelPadding.height() * 2);
 112
 113                 const float height = label_size.height();
 114                 const float top =
 115                         rect.height() - label_size.height() - TimeMarker::ArrowSize - 0.5f;
 116
 117                 const pv::util::Timestamp& delta = ref_item->delta(time_);
 118
 119                 if (delta >= 0)
 120                         r = QRectF(x, top, label_size.width(), height);
 121                 else
 122                         r = QRectF(x - label_size.width(), top, label_size.width(), height);
 123         }
 124
 125         return r;
 126 }
 127
 128 pv::widgets::Popup* Flag::create_popup(QWidget *parent)
 129 {
 130         using pv::widgets::Popup;
 131
 132         Popup *const popup = TimeMarker::create_popup(parent);
 133         popup->set_position(parent->mapToGlobal(
 134                 drag_point(parent->rect())), Popup::Bottom);
 135
 136         QFormLayout *const form = (QFormLayout*)popup->layout();
 137
 138         QLineEdit *const text_edit = new QLineEdit(popup);
 139         text_edit->setText(text_);
 140
 141         connect(text_edit, SIGNAL(textChanged(const QString&)),
 142                 this, SLOT(on_text_changed(const QString&)));
 143
 144         form->insertRow(0, tr("Text"), text_edit);
 145
 146         return popup;
 147 }
 148
 149 QMenu* Flag::create_header_context_menu(QWidget *parent)
 150 {
 151         QMenu *const menu = new QMenu(parent);
 152
 153         QAction *const del = new QAction(tr("Delete"), this);
 154         del->setShortcuts(QKeySequence::Delete);
 155         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 156         menu->addAction(del);
 157
 158         QAction *const snap_disable = new QAction(tr("Disable snapping"), this);
 159         snap_disable->setCheckable(true);
 160         snap_disable->setChecked(snapping_disabled_);
 161         connect(snap_disable, &QAction::toggled, this, [=](bool checked){snapping_disabled_ = checked;});
 162         menu->addAction(snap_disable);
 163
 164         return menu;
 165 }
 166
 167 void Flag::delete_pressed()
 168 {
 169         on_delete();
 170 }
 171
 172 void Flag::on_delete()
 173 {
 174         view_.remove_flag(shared_ptr<Flag>(shared_from_this()));
 175 }
 176
 177 void Flag::on_text_changed(const QString &text)
 178 {
 179         set_text(text);
 180 }
 181
 182 } // namespace trace
 183 } // namespace views
 184 } // namespace pv