View: support multiple trigger markers in one acquisition.
[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 #include <pv/devices/device.hpp>
30
31 #include "devicetoolbutton.hpp"
32
33 using std::list;
34 using std::shared_ptr;
35 using std::string;
36 using std::weak_ptr;
37 using std::vector;
38
39 using pv::devices::Device;
40
41 namespace pv {
42 namespace widgets {
43
44 DeviceToolButton::DeviceToolButton(QWidget *parent,
45         DeviceManager &device_manager,
46         QAction *connect_action) :
47         QToolButton(parent),
48         device_manager_(device_manager),
49         connect_action_(connect_action),
50         menu_(this),
51         mapper_(this),
52         devices_()
53 {
54         setPopupMode(QToolButton::MenuButtonPopup);
55         setMenu(&menu_);
56         setDefaultAction(connect_action_);
57         setMinimumWidth(QFontMetrics(font()).averageCharWidth() * 24);
58
59         connect(&mapper_, SIGNAL(mapped(QObject*)),
60                 this, SLOT(on_action(QObject*)));
61
62         connect(&menu_, SIGNAL(hovered(QAction*)),
63                 this, SLOT(on_menu_hovered(QAction*)));
64 }
65
66 shared_ptr<Device> DeviceToolButton::selected_device()
67 {
68         return selected_device_;
69 }
70
71 void DeviceToolButton::set_device_list(
72         const list< shared_ptr<Device> > &devices, shared_ptr<Device> selected)
73 {
74         selected_device_ = selected;
75         setText(selected ? QString::fromStdString(
76                 selected->display_name(device_manager_)) : "<No Device>");
77         devices_ = vector< weak_ptr<Device> >(devices.begin(), devices.end());
78         update_device_list();
79 }
80
81 void DeviceToolButton::update_device_list()
82 {
83         menu_.clear();
84         menu_.addAction(connect_action_);
85         menu_.setDefaultAction(connect_action_);
86         menu_.addSeparator();
87
88         for (weak_ptr<Device> dev_weak_ptr : devices_) {
89                 shared_ptr<Device> dev(dev_weak_ptr.lock());
90                 if (!dev)
91                         continue;
92
93                 QAction *const a = new QAction(QString::fromStdString(
94                         dev->display_name(device_manager_)), this);
95                 a->setCheckable(true);
96                 a->setChecked(selected_device_ == dev);
97                 a->setData(qVariantFromValue((void*)dev.get()));
98                 a->setToolTip(QString::fromStdString(dev->full_name()));
99                 mapper_.setMapping(a, a);
100
101                 connect(a, SIGNAL(triggered()), &mapper_, SLOT(map()));
102
103                 menu_.addAction(a);
104         }
105 }
106
107 void DeviceToolButton::on_action(QObject *action)
108 {
109         assert(action);
110
111         Device *const dev = (Device*)((QAction*)action)->data().value<void*>();
112         for (weak_ptr<Device> dev_weak_ptr : devices_) {
113                 shared_ptr<Device> dev_ptr(dev_weak_ptr);
114                 if (dev_ptr.get() == dev) {
115                         selected_device_ = shared_ptr<Device>(dev_ptr);
116                         break;
117                 }
118         }
119
120         update_device_list();
121         setText(QString::fromStdString(
122                 selected_device_->display_name(device_manager_)));
123
124         device_selected();
125 }
126
127 void DeviceToolButton::on_menu_hovered(QAction *action)
128 {
129         assert(action);
130
131         // Only show the tooltip for device entries (they hold
132         // device pointers in their data field)
133         if (!action->data().isValid())
134                 return;
135
136         device_tooltip_ = action->toolTip();
137
138         if (QToolTip::isVisible())
139                 on_menu_hover_timeout();
140         else
141                 QTimer::singleShot(1000, this, SLOT(on_menu_hover_timeout()));
142 }
143
144 void DeviceToolButton::on_menu_hover_timeout()
145 {
146         if (device_tooltip_.isEmpty())
147                 return;
148
149         QToolTip::showText(QCursor::pos(), device_tooltip_);
150 }
151
152 } // widgets
153 } // pv