pv/widgets/devicetoolbutton.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2015 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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <cassert>
  22
  23 #include <libsigrok/libsigrok.hpp>
  24
  25 #include <pv/devicemanager.hpp>
  26
  27 #include "devicetoolbutton.hpp"
  28
  29 using std::list;
  30 using std::shared_ptr;
  31 using std::string;
  32 using std::weak_ptr;
  33 using std::vector;
  34
  35 using sigrok::Device;
  36
  37 namespace pv {
  38 namespace widgets {
  39
  40 DeviceToolButton::DeviceToolButton(QWidget *parent,
  41         DeviceManager &device_manager,
  42         QAction *connect_action) :
  43         QToolButton(parent),
  44         device_manager_(device_manager),
  45         connect_action_(connect_action),
  46         menu_(this),
  47         mapper_(this),
  48         devices_()
  49 {
  50         setPopupMode(QToolButton::MenuButtonPopup);
  51         setMenu(&menu_);
  52         setDefaultAction(connect_action_);
  53         setMinimumWidth(QFontMetrics(font()).averageCharWidth() * 24);
  54
  55         connect(&mapper_, SIGNAL(mapped(QObject*)),
  56                 this, SLOT(on_action(QObject*)));
  57 }
  58
  59 shared_ptr<Device> DeviceToolButton::selected_device()
  60 {
  61         return selected_device_;
  62 }
  63
  64 void DeviceToolButton::set_device_list(
  65         const list< shared_ptr<Device> > &devices, shared_ptr<Device> selected)
  66 {
  67         selected_device_ = selected;
  68         setText(QString::fromStdString(
  69                 device_manager_.get_display_name(selected)));
  70         devices_ = vector< weak_ptr<Device> >(devices.begin(), devices.end());
  71         update_device_list();
  72 }
  73
  74 void DeviceToolButton::update_device_list()
  75 {
  76         menu_.clear();
  77         menu_.addAction(connect_action_);
  78         menu_.setDefaultAction(connect_action_);
  79         menu_.addSeparator();
  80
  81         for (weak_ptr<Device> dev_weak_ptr : devices_) {
  82                 shared_ptr<Device> dev(dev_weak_ptr);
  83                 if (!dev)
  84                         continue;
  85
  86                 QAction *const a = new QAction(QString::fromStdString(
  87                         device_manager_.get_display_name(dev)), this);
  88                 a->setCheckable(true);
  89                 a->setChecked(selected_device_ == dev);
  90                 a->setData(qVariantFromValue((void*)dev.get()));
  91                 mapper_.setMapping(a, a);
  92
  93                 connect(a, SIGNAL(triggered()), &mapper_, SLOT(map()));
  94
  95                 menu_.addAction(a);
  96         }
  97 }
  98
  99 void DeviceToolButton::on_action(QObject *action)
 100 {
 101         assert(action);
 102
 103         Device *const dev = (Device*)((QAction*)action)->data().value<void*>();
 104         for (weak_ptr<Device> dev_weak_ptr : devices_) {
 105                 shared_ptr<Device> dev_ptr(dev_weak_ptr);
 106                 if (dev_ptr.get() == dev) {
 107                         selected_device_ = shared_ptr<Device>(dev_ptr);
 108                         break;
 109                 }
 110         }
 111
 112         update_device_list();
 113         setText(QString::fromStdString(
 114                 device_manager_.get_display_name(selected_device_)));
 115
 116         device_selected();
 117 }
 118
 119 } // widgets
 120 } // pv