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