Moved pv::prop:bindings classes into pv::bindings namespace
[pulseview.git] / 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