pv/binding/binding.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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <cassert>
  21
  22 #include <QFormLayout>
  23 #include <QHBoxLayout>
  24 #include <QIcon>
  25 #include <QLabel>
  26 #include <QPushButton>
  27
  28 #include <pv/prop/property.hpp>
  29
  30 #include "binding.hpp"
  31
  32 using std::shared_ptr;
  33 using std::string;
  34 using std::vector;
  35
  36 namespace pv {
  37 namespace binding {
  38
  39 const vector< shared_ptr<prop::Property> >& Binding::properties()
  40 {
  41         return properties_;
  42 }
  43
  44 void Binding::commit()
  45 {
  46         for (shared_ptr<pv::prop::Property> p : properties_) {
  47                 assert(p);
  48                 p->commit();
  49         }
  50 }
  51
  52 void Binding::add_properties_to_form(QFormLayout *layout, bool auto_commit)
  53 {
  54         assert(layout);
  55
  56         help_labels_.clear();
  57
  58         for (shared_ptr<pv::prop::Property> p : properties_) {
  59                 assert(p);
  60
  61                 QWidget *widget;
  62                 QLabel *help_lbl = nullptr;
  63
  64                 if (p->desc().isEmpty()) {
  65                         widget = p->get_widget(layout->parentWidget(), auto_commit);
  66                 } else {
  67                         QPushButton *help_btn = new QPushButton();
  68                         help_btn->setFlat(true);
  69                         help_btn->setIcon(QIcon(":/icons/help-browser.png"));
  70                         help_btn->setToolTip(p->desc());
  71                         connect(help_btn, SIGNAL(clicked(bool)),
  72                                 this, SLOT(on_help_clicked()));
  73
  74                         QHBoxLayout *layout = new QHBoxLayout();
  75                         layout->setContentsMargins(0, 0, 0, 0);
  76                         layout->addWidget(p->get_widget(layout->parentWidget(), auto_commit));
  77                         layout->addWidget(help_btn, 0, Qt::AlignRight);
  78
  79                         widget = new QWidget();
  80                         widget->setLayout(layout);
  81
  82                         help_lbl = new QLabel(p->desc());
  83                         help_lbl->setVisible(false);
  84                         help_lbl->setWordWrap(true);
  85                         help_labels_[help_btn] = help_lbl;
  86                 }
  87
  88                 if (p->labeled_widget()) {
  89                         layout->addRow(widget);
  90                 } else {
  91                         auto *lbl = new QLabel(p->name());
  92                         lbl->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  93                         layout->addRow(lbl, widget);
  94                 }
  95
  96                 if (help_lbl)
  97                         layout->addRow(help_lbl);
  98         }
  99 }
 100
 101 QWidget* Binding::get_property_form(QWidget *parent, bool auto_commit)
 102 {
 103         QWidget *const form = new QWidget(parent);
 104         QFormLayout *const layout = new QFormLayout(form);
 105         form->setLayout(layout);
 106         add_properties_to_form(layout, auto_commit);
 107         return form;
 108 }
 109
 110 void Binding::update_property_widgets()
 111 {
 112         for (shared_ptr<pv::prop::Property> p : properties_) {
 113                 assert(p);
 114                 p->update_widget();
 115         }
 116 }
 117
 118 QString Binding::print_gvariant(Glib::VariantBase gvar)
 119 {
 120         QString s;
 121
 122         if (!gvar.gobj())
 123                 s = QString::fromStdString("(null)");
 124         else if (gvar.is_of_type(Glib::VariantType("s")))
 125                 s = QString::fromStdString(
 126                         Glib::VariantBase::cast_dynamic<Glib::Variant<string>>(gvar).get());
 127         else
 128                 s = QString::fromStdString(gvar.print());
 129
 130         return s;
 131 }
 132
 133 void Binding::on_help_clicked()
 134 {
 135         QPushButton *btn = qobject_cast<QPushButton*>(QObject::sender());
 136         assert(btn);
 137
 138         QLabel *lbl = help_labels_.at(btn);
 139         lbl->setVisible(!lbl->isVisible());
 140 }
 141
 142 }  // namespace binding
 143 }  // namespace pv