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         QString s;
  63
  64         const shared_ptr<TimeItem> ref_item = view_.ruler()->get_reference_item();
  65
  66         if (!ref_item || (ref_item.get() == this))
  67                 s = text_;
  68         else
  69                 s = Ruler::format_time_with_distance(
  70                         ref_item->time(), ref_item->delta(time_),
  71                         view_.tick_prefix(), view_.time_unit(), view_.tick_precision());
  72
  73         return s;
  74 }
  75
  76 void Flag::set_text(const QString &text)
  77 {
  78         text_ = text;
  79         view_.time_item_appearance_changed(true, false);
  80 }
  81
  82 QRectF Flag::label_rect(const QRectF &rect) const
  83 {
  84         QRectF r;
  85
  86         const shared_ptr<TimeItem> ref_item = view_.ruler()->get_reference_item();
  87
  88         if (!ref_item || (ref_item.get() == this)) {
  89                 r = TimeMarker::label_rect(rect);
  90         } else {
  91                 // TODO: Remove code duplication between here and cursor.cpp
  92                 const float x = get_x();
  93
  94                 QFontMetrics m(QApplication::font());
  95                 QSize text_size = m.boundingRect(get_text()).size();
  96
  97                 const QSizeF label_size(
  98                         text_size.width() + LabelPadding.width() * 2,
  99                         text_size.height() + LabelPadding.height() * 2);
 100
 101                 const float height = label_size.height();
 102                 const float top =
 103                         rect.height() - label_size.height() - TimeMarker::ArrowSize - 0.5f;
 104
 105                 const pv::util::Timestamp& delta = ref_item->delta(time_);
 106
 107                 if (delta >= 0)
 108                         r = QRectF(x, top, label_size.width(), height);
 109                 else
 110                         r = QRectF(x - label_size.width(), top, label_size.width(), height);
 111         }
 112
 113         return r;
 114 }
 115
 116 pv::widgets::Popup* Flag::create_popup(QWidget *parent)
 117 {
 118         using pv::widgets::Popup;
 119
 120         Popup *const popup = TimeMarker::create_popup(parent);
 121         popup->set_position(parent->mapToGlobal(
 122                 drag_point(parent->rect())), Popup::Bottom);
 123
 124         QFormLayout *const form = (QFormLayout*)popup->layout();
 125
 126         QLineEdit *const text_edit = new QLineEdit(popup);
 127         text_edit->setText(text_);
 128
 129         connect(text_edit, SIGNAL(textChanged(const QString&)),
 130                 this, SLOT(on_text_changed(const QString&)));
 131
 132         form->insertRow(0, tr("Text"), text_edit);
 133
 134         return popup;
 135 }
 136
 137 QMenu* Flag::create_header_context_menu(QWidget *parent)
 138 {
 139         QMenu *const menu = new QMenu(parent);
 140
 141         QAction *const del = new QAction(tr("Delete"), this);
 142         del->setShortcuts(QKeySequence::Delete);
 143         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 144         menu->addAction(del);
 145
 146         QAction *const snap_disable = new QAction(tr("Disable snapping"), this);
 147         snap_disable->setCheckable(true);
 148         snap_disable->setChecked(snapping_disabled_);
 149         connect(snap_disable, &QAction::toggled, this, [=](bool checked){snapping_disabled_ = checked;});
 150         menu->addAction(snap_disable);
 151
 152         return menu;
 153 }
 154
 155 void Flag::delete_pressed()
 156 {
 157         on_delete();
 158 }
 159
 160 void Flag::on_delete()
 161 {
 162         view_.remove_flag(shared_ptr<Flag>(shared_from_this()));
 163 }
 164
 165 void Flag::on_text_changed(const QString &text)
 166 {
 167         set_text(text);
 168 }
 169
 170 } // namespace trace
 171 } // namespace views
 172 } // namespace pv