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 <QTimer>
  24 #include <QToolTip>
  25
  26 #include <libsigrokcxx/libsigrokcxx.hpp>
  27
  28 #include <pv/devicemanager.hpp>
  29
  30 #include "devicetoolbutton.hpp"
  31
  32 using std::list;
  33 using std::shared_ptr;
  34 using std::string;
  35 using std::weak_ptr;
  36 using std::vector;
  37
  38 using sigrok::Device;
  39
  40 namespace pv {
  41 namespace widgets {
  42
  43 DeviceToolButton::DeviceToolButton(QWidget *parent,
  44         DeviceManager &device_manager,
  45         QAction *connect_action) :
  46         QToolButton(parent),
  47         device_manager_(device_manager),
  48         connect_action_(connect_action),
  49         menu_(this),
  50         mapper_(this),
  51         devices_()
  52 {
  53         setPopupMode(QToolButton::MenuButtonPopup);
  54         setMenu(&menu_);
  55         setDefaultAction(connect_action_);
  56         setMinimumWidth(QFontMetrics(font()).averageCharWidth() * 24);
  57
  58         connect(&mapper_, SIGNAL(mapped(QObject*)),
  59                 this, SLOT(on_action(QObject*)));
  60
  61         connect(&menu_, SIGNAL(hovered(QAction*)),
  62                 this, SLOT(on_menu_hovered(QAction*)));
  63 }
  64
  65 shared_ptr<Device> DeviceToolButton::selected_device()
  66 {
  67         return selected_device_;
  68 }
  69
  70 void DeviceToolButton::set_device_list(
  71         const list< shared_ptr<Device> > &devices, shared_ptr<Device> selected)
  72 {
  73         selected_device_ = selected;
  74         setText(QString::fromStdString(
  75                 device_manager_.get_display_name(selected)));
  76         devices_ = vector< weak_ptr<Device> >(devices.begin(), devices.end());
  77         update_device_list();
  78 }
  79
  80 void DeviceToolButton::update_device_list()
  81 {
  82         menu_.clear();
  83         menu_.addAction(connect_action_);
  84         menu_.setDefaultAction(connect_action_);
  85         menu_.addSeparator();
  86
  87         for (weak_ptr<Device> dev_weak_ptr : devices_) {
  88                 shared_ptr<Device> dev(dev_weak_ptr);
  89                 if (!dev)
  90                         continue;
  91
  92                 QAction *const a = new QAction(QString::fromStdString(
  93                         device_manager_.get_display_name(dev)), this);
  94                 a->setCheckable(true);
  95                 a->setChecked(selected_device_ == dev);
  96                 a->setData(qVariantFromValue((void*)dev.get()));
  97                 a->setToolTip(QString::fromStdString(device_manager_.get_full_name(dev)));
  98                 mapper_.setMapping(a, a);
  99
 100                 connect(a, SIGNAL(triggered()), &mapper_, SLOT(map()));
 101
 102                 menu_.addAction(a);
 103         }
 104 }
 105
 106 void DeviceToolButton::on_action(QObject *action)
 107 {
 108         assert(action);
 109
 110         Device *const dev = (Device*)((QAction*)action)->data().value<void*>();
 111         for (weak_ptr<Device> dev_weak_ptr : devices_) {
 112                 shared_ptr<Device> dev_ptr(dev_weak_ptr);
 113                 if (dev_ptr.get() == dev) {
 114                         selected_device_ = shared_ptr<Device>(dev_ptr);
 115                         break;
 116                 }
 117         }
 118
 119         update_device_list();
 120         setText(QString::fromStdString(
 121                 device_manager_.get_display_name(selected_device_)));
 122
 123         device_selected();
 124 }
 125
 126 void DeviceToolButton::on_menu_hovered(QAction *action)
 127 {
 128         assert(action);
 129
 130         // Only show the tooltip for device entries (they hold
 131         // device pointers in their data field)
 132         if (!action->data().isValid())
 133                 return;
 134
 135         device_tooltip_ = action->toolTip();
 136
 137         if (QToolTip::isVisible())
 138                 on_menu_hover_timeout();
 139         else
 140                 QTimer::singleShot(1000, this, SLOT(on_menu_hover_timeout()));
 141 }
 142
 143 void DeviceToolButton::on_menu_hover_timeout()
 144 {
 145         if (device_tooltip_.isEmpty())
 146                 return;
 147
 148         QToolTip::showText(QCursor::pos(), device_tooltip_);
 149 }
 150
 151 } // widgets
 152 } // pv