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[pulseview.git] / pv / mainwindow.cpp
index f8463257b5b882531692abc3c0ab4803efdcfa64..f7c47122737216fba1fa32472d70f10cf6b5b71c 100644 (file)
@@ -31,6 +31,8 @@
 #include <QApplication>
 #include <QCloseEvent>
 #include <QDockWidget>
+#include <QHBoxLayout>
+#include <QMessageBox>
 #include <QSettings>
 #include <QWidget>
 
 
 #include "devicemanager.hpp"
 #include "util.hpp"
+#include "devices/hardwaredevice.hpp"
 #include "dialogs/about.hpp"
 #include "toolbars/mainbar.hpp"
 #include "view/view.hpp"
+#include "views/trace/standardbar.hpp"
 
 #include <stdint.h>
 #include <stdarg.h>
 #include <libsigrokcxx/libsigrokcxx.hpp>
 
+using std::dynamic_pointer_cast;
 using std::list;
 using std::make_shared;
 using std::map;
@@ -60,42 +65,59 @@ class ViewItem;
 
 using toolbars::MainBar;
 
+const QString MainWindow::WindowTitle = tr("PulseView");
+
 MainWindow::MainWindow(DeviceManager &device_manager,
        string open_file_name, string open_file_format,
        QWidget *parent) :
        QMainWindow(parent),
        device_manager_(device_manager),
-       session_(device_manager),
-       open_file_name_(open_file_name),
-       open_file_format_(open_file_format),
+       session_selector_(this),
+       session_state_mapper_(this),
        action_view_sticky_scrolling_(new QAction(this)),
        action_view_coloured_bg_(new QAction(this)),
-       action_about_(new QAction(this))
+       action_about_(new QAction(this)),
+       icon_red_(":/icons/status-red.svg"),
+       icon_green_(":/icons/status-green.svg"),
+       icon_grey_(":/icons/status-grey.svg")
 {
        qRegisterMetaType<util::Timestamp>("util::Timestamp");
 
        setup_ui();
        restore_ui_settings();
-}
 
-MainWindow::~MainWindow()
-{
-       for (auto entry : view_docks_) {
+       if (!open_file_name.empty()) {
+               shared_ptr<Session> session = add_session();
+               session->load_init_file(open_file_name, open_file_format);
+       }
 
-               const std::shared_ptr<QDockWidget> dock = entry.first;
+       // Add empty default session if there aren't any sessions
+       if (sessions_.size() == 0) {
+               shared_ptr<Session> session = add_session();
 
-               // Remove view from the dock widget's QMainWindow
-               QMainWindow *dock_main = dynamic_cast<QMainWindow*>(dock->widget());
-               dock_main->setCentralWidget(0);
+               map<string, string> dev_info;
+               shared_ptr<devices::HardwareDevice> other_device, demo_device;
 
-               // Remove the QMainWindow
-               dock->setWidget(0);
+               // Use any available device that's not demo
+               for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
+                       if (dev->hardware_device()->driver()->name() == "demo") {
+                               demo_device = dev;
+                       } else {
+                               other_device = dev;
+                       }
+               }
 
-               const std::shared_ptr<pv::view::View> view = entry.second;
-               session_.deregister_view(view);
+               // ...and if there isn't any, just use demo then
+               session->select_device(other_device ? other_device : demo_device);
        }
 }
 
+MainWindow::~MainWindow()
+{
+       while (!sessions_.empty())
+               remove_session(sessions_.front());
+}
+
 QAction* MainWindow::action_view_sticky_scrolling() const
 {
        return action_view_sticky_scrolling_;
@@ -111,7 +133,7 @@ QAction* MainWindow::action_about() const
        return action_about_;
 }
 
-shared_ptr<pv::view::View> MainWindow::get_active_view() const
+shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 {
        // If there's only one view, use it...
        if (view_docks_.size() == 1)
@@ -130,27 +152,33 @@ shared_ptr<pv::view::View> MainWindow::get_active_view() const
 
        // Get the view contained in the dock widget
        for (auto entry : view_docks_)
-               if (entry.first.get() == dock)
+               if (entry.first == dock)
                        return entry.second;
 
-       return shared_ptr<pv::view::View>();
+       return nullptr;
 }
 
-shared_ptr<pv::view::View> MainWindow::add_view(const QString &title,
-       view::ViewType type, Session &session)
+shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
+       views::ViewType type, Session &session)
 {
-       shared_ptr<pv::view::View> v;
+       QMainWindow *main_window = nullptr;
+       for (auto entry : session_windows_)
+               if (entry.first.get() == &session)
+                       main_window = entry.second;
+
+       assert(main_window);
 
-       if (type == pv::view::TraceView) {
-               shared_ptr<QDockWidget> dock = make_shared<QDockWidget>(title, this);
+       if (type == views::ViewTypeTrace) {
+               QDockWidget* dock = new QDockWidget(title, main_window);
                dock->setObjectName(title);
-               addDockWidget(Qt::TopDockWidgetArea, dock.get());
+               main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 
                // Insert a QMainWindow into the dock widget to allow for a tool bar
-               QMainWindow *dock_main = new QMainWindow(dock.get());
+               QMainWindow *dock_main = new QMainWindow(dock);
                dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 
-               v = make_shared<pv::view::View>(session, dock_main);
+               shared_ptr<views::TraceView::View> v =
+                       make_shared<views::TraceView::View>(session, dock_main);
                view_docks_[dock] = v;
                session.register_view(v);
 
@@ -158,40 +186,139 @@ shared_ptr<pv::view::View> MainWindow::add_view(const QString &title,
                dock->setWidget(dock_main);
 
                dock->setFeatures(QDockWidget::DockWidgetMovable |
-                       QDockWidget::DockWidgetFloatable);
+                       QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 
-               if (type == view::TraceView) {
-                       connect(&session, SIGNAL(trigger_event(util::Timestamp)), v.get(),
+               QAbstractButton *close_btn =
+                       dock->findChildren<QAbstractButton*>
+                               ("qt_dockwidget_closebutton").front();
+
+               connect(close_btn, SIGNAL(clicked(bool)),
+                       this, SLOT(on_view_close_clicked()));
+
+               if (type == views::ViewTypeTrace) {
+                       connect(&session, SIGNAL(trigger_event(util::Timestamp)),
+                               qobject_cast<views::ViewBase*>(v.get()),
                                SLOT(trigger_event(util::Timestamp)));
-                       connect(v.get(), SIGNAL(sticky_scrolling_changed(bool)), this,
-                               SLOT(sticky_scrolling_changed(bool)));
-                       connect(v.get(), SIGNAL(always_zoom_to_fit_changed(bool)), this,
-                               SLOT(always_zoom_to_fit_changed(bool)));
 
                        v->enable_sticky_scrolling(action_view_sticky_scrolling_->isChecked());
                        v->enable_coloured_bg(action_view_coloured_bg_->isChecked());
 
                        shared_ptr<MainBar> main_bar = session.main_bar();
                        if (!main_bar) {
-                               main_bar = make_shared<MainBar>(session_, *this,
-                                       open_file_name_, open_file_format_);
+                               /* Initial view, create the main bar */
+                               main_bar = make_shared<MainBar>(session, this, v.get());
                                dock_main->addToolBar(main_bar.get());
                                session.set_main_bar(main_bar);
 
-                               open_file_name_.clear();
-                               open_file_format_.clear();
+                               connect(main_bar.get(), SIGNAL(new_view(Session*)),
+                                       this, SLOT(on_new_view(Session*)));
+
+                               main_bar->action_view_show_cursors()->setChecked(v->cursors_shown());
+                       } else {
+                               /* Additional view, create a standard bar */
+                               pv::views::trace::StandardBar *standard_bar =
+                                       new pv::views::trace::StandardBar(session, this, v.get());
+                               dock_main->addToolBar(standard_bar);
+
+                               standard_bar->action_view_show_cursors()->setChecked(v->cursors_shown());
                        }
-                       main_bar->action_view_show_cursors()->setChecked(v->cursors_shown());
                }
+
+               return v;
        }
 
-       return v;
+       return nullptr;
+}
+
+shared_ptr<Session> MainWindow::add_session()
+{
+       static int last_session_id = 1;
+       QString name = tr("Untitled-%1").arg(last_session_id++);
+
+       shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
+
+       connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
+               this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
+       connect(session.get(), SIGNAL(name_changed()),
+               this, SLOT(on_session_name_changed()));
+       session_state_mapper_.setMapping(session.get(), session.get());
+       connect(session.get(), SIGNAL(capture_state_changed(int)),
+               &session_state_mapper_, SLOT(map()));
+
+       sessions_.push_back(session);
+
+       QMainWindow *window = new QMainWindow();
+       window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
+       session_windows_[session] = window;
+
+       int index = session_selector_.addTab(window, name);
+       session_selector_.setCurrentIndex(index);
+       last_focused_session_ = session;
+
+       window->setDockNestingEnabled(true);
+
+       shared_ptr<views::ViewBase> main_view =
+               add_view(name, views::ViewTypeTrace, *session);
+
+       return session;
+}
+
+void MainWindow::remove_session(shared_ptr<Session> session)
+{
+       int h = new_session_button_->height();
+
+       for (shared_ptr<views::ViewBase> view : session->views()) {
+               // Find the dock the view is contained in and remove it
+               for (auto entry : view_docks_)
+                       if (entry.second == view) {
+                               // Remove the view from the session
+                               session->deregister_view(view);
+
+                               // Remove the view from its parent; otherwise, Qt will
+                               // call deleteLater() on it, which causes a double free
+                               // since the shared_ptr in view_docks_ doesn't know
+                               // that Qt keeps a pointer to the view around
+                               entry.second->setParent(0);
+
+                               // Remove this entry from the container
+                               view_docks_.erase(entry.first);
+                       }
+       }
+
+       QMainWindow *window = session_windows_.at(session);
+       session_selector_.removeTab(session_selector_.indexOf(window));
+
+       session_windows_.erase(session);
+
+       if (last_focused_session_ == session)
+               last_focused_session_.reset();
+
+       sessions_.remove_if([&](shared_ptr<Session> s) {
+               return s == session; });
+
+       if (sessions_.empty()) {
+               // When there are no more tabs, the height of the QTabWidget
+               // drops to zero. We must prevent this to keep the static
+               // widgets visible
+               for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())
+                       w->setMinimumHeight(h);
+
+               int margin = static_tab_widget_->layout()->contentsMargins().bottom();
+               static_tab_widget_->setMinimumHeight(h + 2 * margin);
+               session_selector_.setMinimumHeight(h + 2 * margin);
+
+               // Update the window title if there is no view left to
+               // generate focus change events
+               setWindowTitle(WindowTitle);
+       }
 }
 
 void MainWindow::setup_ui()
 {
        setObjectName(QString::fromUtf8("MainWindow"));
 
+       setCentralWidget(&session_selector_);
+
        // Set the window icon
        QIcon icon;
        icon.addFile(QString(":/icons/sigrok-logo-notext.png"));
@@ -209,57 +336,102 @@ void MainWindow::setup_ui()
        action_view_coloured_bg_->setShortcut(QKeySequence(Qt::Key_B));
        action_view_coloured_bg_->setObjectName(
                QString::fromUtf8("actionViewColouredBg"));
-       action_view_coloured_bg_->setText(tr("Use &coloured backgrounds"));
+       action_view_coloured_bg_->setText(tr("Use &Coloured Backgrounds"));
 
        action_about_->setObjectName(QString::fromUtf8("actionAbout"));
-       action_about_->setText(tr("&About..."));
-
-       // Set up the initial view
-       shared_ptr<view::View> main_view =
-               add_view(tr("Untitled"), pv::view::TraceView, session_);
-
-       // Set the title
-       setWindowTitle(tr("PulseView"));
+       action_about_->setToolTip(tr("&About..."));
+
+       // Set up the tab area
+       new_session_button_ = new QToolButton();
+       new_session_button_->setIcon(QIcon::fromTheme("document-new",
+               QIcon(":/icons/document-new.png")));
+       new_session_button_->setToolTip(tr("Create New Session"));
+       new_session_button_->setAutoRaise(true);
+
+       run_stop_button_ = new QToolButton();
+       run_stop_button_->setAutoRaise(true);
+       run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
+       run_stop_button_->setShortcut(QKeySequence(Qt::Key_Space));
+       run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
+
+       settings_button_ = new QToolButton();
+       settings_button_->setIcon(QIcon::fromTheme("configure",
+               QIcon(":/icons/configure.png")));
+       settings_button_->setToolTip(tr("Settings"));
+       settings_button_->setAutoRaise(true);
+
+       QFrame *separator1 = new QFrame();
+       separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
+       QFrame *separator2 = new QFrame();
+       separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
+
+       QHBoxLayout* layout = new QHBoxLayout();
+       layout->setContentsMargins(2, 2, 2, 2);
+       layout->addWidget(new_session_button_);
+       layout->addWidget(separator1);
+       layout->addWidget(run_stop_button_);
+       layout->addWidget(separator2);
+       layout->addWidget(settings_button_);
+
+       static_tab_widget_ = new QWidget();
+       static_tab_widget_->setLayout(layout);
+
+       session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
+       session_selector_.setTabsClosable(true);
+
+       connect(new_session_button_, SIGNAL(clicked(bool)),
+               this, SLOT(on_new_session_clicked()));
+       connect(run_stop_button_, SIGNAL(clicked(bool)),
+               this, SLOT(on_run_stop_clicked()));
+       connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
+               this, SLOT(on_capture_state_changed(QObject*)));
+
+       connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
+               this, SLOT(on_tab_close_requested(int)));
+       connect(&session_selector_, SIGNAL(currentChanged(int)),
+               this, SLOT(on_tab_changed(int)));
+
+
+       connect(static_cast<QApplication *>(QCoreApplication::instance()),
+               SIGNAL(focusChanged(QWidget*, QWidget*)),
+               this, SLOT(on_focus_changed()));
 }
 
 void MainWindow::save_ui_settings()
 {
        QSettings settings;
-
-       map<string, string> dev_info;
-       list<string> key_list;
+       int id = 0;
 
        settings.beginGroup("MainWindow");
        settings.setValue("state", saveState());
        settings.setValue("geometry", saveGeometry());
        settings.endGroup();
 
-       if (session_.device()) {
-               settings.beginGroup("Device");
-               key_list.push_back("vendor");
-               key_list.push_back("model");
-               key_list.push_back("version");
-               key_list.push_back("serial_num");
-               key_list.push_back("connection_id");
-
-               dev_info = device_manager_.get_device_info(
-                       session_.device());
-
-               for (string key : key_list) {
-                       if (dev_info.count(key))
-                               settings.setValue(QString::fromUtf8(key.c_str()),
-                                               QString::fromUtf8(dev_info.at(key).c_str()));
-                       else
-                               settings.remove(QString::fromUtf8(key.c_str()));
+       for (shared_ptr<Session> session : sessions_) {
+               // Ignore sessions using the demo device or no device at all
+               if (session->device()) {
+                       shared_ptr<devices::HardwareDevice> device =
+                               dynamic_pointer_cast< devices::HardwareDevice >
+                               (session->device());
+
+                       if (device &&
+                               device->hardware_device()->driver()->name() == "demo")
+                               continue;
+
+                       settings.beginGroup("Session" + QString::number(id++));
+                       settings.remove("");  // Remove all keys in this group
+                       session->save_settings(settings);
+                       settings.endGroup();
                }
-
-               settings.endGroup();
        }
+
+       settings.setValue("sessions", id);
 }
 
 void MainWindow::restore_ui_settings()
 {
        QSettings settings;
+       int i, session_count;
 
        settings.beginGroup("MainWindow");
 
@@ -270,6 +442,25 @@ void MainWindow::restore_ui_settings()
                resize(1000, 720);
 
        settings.endGroup();
+
+       session_count = settings.value("sessions", 0).toInt();
+
+       for (i = 0; i < session_count; i++) {
+               settings.beginGroup("Session" + QString::number(i));
+               shared_ptr<Session> session = add_session();
+               session->restore_settings(settings);
+               settings.endGroup();
+       }
+}
+
+std::shared_ptr<Session> MainWindow::get_tab_session(int index) const
+{
+       // Find the session that belongs to the tab's main window
+       for (auto entry : session_windows_)
+               if (entry.second == session_selector_.widget(index))
+                       return entry.first;
+
+       return nullptr;
 }
 
 void MainWindow::closeEvent(QCloseEvent *event)
@@ -294,16 +485,212 @@ bool MainWindow::restoreState(const QByteArray &state, int version)
        return false;
 }
 
+void MainWindow::session_error(const QString text, const QString info_text)
+{
+       QMetaObject::invokeMethod(this, "show_session_error",
+               Qt::QueuedConnection, Q_ARG(QString, text),
+               Q_ARG(QString, info_text));
+}
+
+void MainWindow::show_session_error(const QString text, const QString info_text)
+{
+       QMessageBox msg(this);
+       msg.setText(text);
+       msg.setInformativeText(info_text);
+       msg.setStandardButtons(QMessageBox::Ok);
+       msg.setIcon(QMessageBox::Warning);
+       msg.exec();
+}
+
+void MainWindow::on_add_view(const QString &title, views::ViewType type,
+       Session *session)
+{
+       // We get a pointer and need a reference
+       for (std::shared_ptr<Session> s : sessions_)
+               if (s.get() == session)
+                       add_view(title, type, *s);
+}
+
+void MainWindow::on_focus_changed()
+{
+       shared_ptr<views::ViewBase> view = get_active_view();
+
+       if (view) {
+               for (shared_ptr<Session> session : sessions_) {
+                       if (session->has_view(view)) {
+                               if (session != last_focused_session_) {
+                                       // Activate correct tab if necessary
+                                       shared_ptr<Session> tab_session = get_tab_session(
+                                               session_selector_.currentIndex());
+                                       if (tab_session != session)
+                                               session_selector_.setCurrentWidget(
+                                                       session_windows_.at(session));
+
+                                       on_focused_session_changed(session);
+                               }
+
+                               break;
+                       }
+               }
+       }
+
+       if (sessions_.empty())
+               setWindowTitle(WindowTitle);
+}
+
+void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
+{
+       last_focused_session_ = session;
+
+       setWindowTitle(session->name() + " - " + WindowTitle);
+
+       // Update the state of the run/stop button, too
+       on_capture_state_changed(session.get());
+}
+
+void MainWindow::on_new_session_clicked()
+{
+       add_session();
+}
+
+void MainWindow::on_run_stop_clicked()
+{
+       shared_ptr<Session> session = last_focused_session_;
+
+       if (!session)
+               return;
+
+       switch (session->get_capture_state()) {
+       case Session::Stopped:
+               session->start_capture([&](QString message) {
+                       session_error("Capture failed", message); });
+               break;
+       case Session::AwaitingTrigger:
+       case Session::Running:
+               session->stop_capture();
+               break;
+       }
+}
+
+void MainWindow::on_session_name_changed()
+{
+       // Update the corresponding dock widget's name(s)
+       Session *session = qobject_cast<Session*>(QObject::sender());
+       assert(session);
+
+       for (shared_ptr<views::ViewBase> view : session->views()) {
+               // Get the dock that contains the view
+               for (auto entry : view_docks_)
+                       if (entry.second == view) {
+                               entry.first->setObjectName(session->name());
+                               entry.first->setWindowTitle(session->name());
+                       }
+       }
+
+       // Update the tab widget by finding the main window and the tab from that
+       for (auto entry : session_windows_)
+               if (entry.first.get() == session) {
+                       QMainWindow *window = entry.second;
+                       const int index = session_selector_.indexOf(window);
+                       session_selector_.setTabText(index, session->name());
+               }
+
+       // Refresh window title if the affected session has focus
+       if (session == last_focused_session_.get())
+               setWindowTitle(session->name() + " - " + WindowTitle);
+}
+
+void MainWindow::on_capture_state_changed(QObject *obj)
+{
+       Session *caller = qobject_cast<Session*>(obj);
+
+       // Ignore if caller is not the currently focused session
+       // unless there is only one session
+       if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
+               return;
+
+       int state = caller->get_capture_state();
+
+       const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
+       run_stop_button_->setIcon(*icons[state]);
+       run_stop_button_->setText((state == pv::Session::Stopped) ?
+               tr("Run") : tr("Stop"));
+}
+
+void MainWindow::on_new_view(Session *session)
+{
+       // We get a pointer and need a reference
+       for (std::shared_ptr<Session> s : sessions_)
+               if (s.get() == session)
+                       add_view(session->name(), views::ViewTypeTrace, *s);
+}
+
+void MainWindow::on_view_close_clicked()
+{
+       // Find the dock widget that contains the close button that was clicked
+       QObject *w = QObject::sender();
+       QDockWidget *dock = 0;
+
+       while (w) {
+           dock = qobject_cast<QDockWidget*>(w);
+           if (dock)
+               break;
+           w = w->parent();
+       }
+
+       // Get the view contained in the dock widget
+       shared_ptr<views::ViewBase> view;
+
+       for (auto entry : view_docks_)
+               if (entry.first == dock)
+                       view = entry.second;
+
+       // Deregister the view
+       for (shared_ptr<Session> session : sessions_) {
+               if (!session->has_view(view))
+                       continue;
+
+               // Also destroy the entire session if its main view is closing
+               if (view == session->main_view()) {
+                       remove_session(session);
+                       break;
+               } else
+                       session->deregister_view(view);
+       }
+}
+
+void MainWindow::on_tab_changed(int index)
+{
+       shared_ptr<Session> session = get_tab_session(index);
+
+       if (session)
+               on_focused_session_changed(session);
+}
+
+void MainWindow::on_tab_close_requested(int index)
+{
+       // TODO Ask user if this is intended in case data is unsaved
+
+       shared_ptr<Session> session = get_tab_session(index);
+
+       if (session)
+               remove_session(session);
+}
+
 void MainWindow::on_actionViewStickyScrolling_triggered()
 {
-       shared_ptr<pv::view::View> view = get_active_view();
+       shared_ptr<views::ViewBase> viewbase = get_active_view();
+       views::TraceView::View* view =
+               qobject_cast<views::TraceView::View*>(viewbase.get());
        if (view)
                view->enable_sticky_scrolling(action_view_sticky_scrolling_->isChecked());
 }
 
 void MainWindow::on_actionViewColouredBg_triggered()
 {
-       shared_ptr<pv::view::View> view = get_active_view();
+       shared_ptr<views::ViewBase> viewbase = get_active_view();
+       views::TraceView::View* view =
+                       qobject_cast<views::TraceView::View*>(viewbase.get());
        if (view)
                view->enable_coloured_bg(action_view_coloured_bg_->isChecked());
 }