src/jogshuttle/jogaction.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2010 Pascal Fleury <fleury@users.sourceforge.net>
0003
0004 SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0005 */
0006
0007 #include "jogaction.h"
0008 #include "core.h"
0009 #include "monitor/monitormanager.h"
0010
0011 #include "kdenlive_debug.h"
0012 #include <KLocalizedString>
0013 #include <cstdio>
0014 #include <cstdlib>
0015 #include <utility>
0016 // TODO(fleury): this should probably be a user configuration parameter (at least the max speed).
0017 // const double SPEEDS[] = {0.0, 0.5, 1.0, 2.0, 4.0, 8.0, 16.0, 32.0};
0018 const double SPEEDS[] = {0.0, 1.0, 2.0, 4.0, 5.0, 8.0, 16.0, 60.0};
0019 const size_t SPEEDS_SIZE = sizeof(SPEEDS) / sizeof(double);
0020
0021 JogShuttleAction::JogShuttleAction(const JogShuttle *jogShuttle, QStringList actionMap, QObject *parent)
0022     : QObject(parent)
0023     , m_jogShuttle(jogShuttle)
0024     , m_actionMap(std::move(actionMap))
0025 {
0026     // Add action map 0 used for stopping the monitor when the shuttle is in neutral position.
0027     if (m_actionMap.isEmpty()) {
0028         m_actionMap.append(QStringLiteral("monitor_pause"));
0029     }
0030
0031     connect(m_jogShuttle, &JogShuttle::jogBack, pCore->monitorManager(), &MonitorManager::slotRewindOneFrame);
0032     connect(m_jogShuttle, &JogShuttle::jogForward, pCore->monitorManager(), &MonitorManager::slotForwardOneFrame);
0033     connect(m_jogShuttle, &JogShuttle::shuttlePos, this, &JogShuttleAction::slotShuttlePos);
0034     connect(m_jogShuttle, &JogShuttle::button, this, &JogShuttleAction::slotButton);
0035
0036     connect(this, &JogShuttleAction::rewind, pCore->monitorManager(), &MonitorManager::slotRewind);
0037     connect(this, &JogShuttleAction::forward, pCore->monitorManager(), &MonitorManager::slotForward);
0038 }
0039
0040 JogShuttleAction::~JogShuttleAction() = default;
0041
0042 void JogShuttleAction::slotShuttlePos(int shuttle_pos)
0043 {
0044     size_t magnitude = size_t(abs(shuttle_pos));
0045     if (magnitude < SPEEDS_SIZE) {
0046         if (shuttle_pos < 0) {
0047             Q_EMIT rewind(-SPEEDS[magnitude]);
0048         } else if (shuttle_pos == 0) {
0049             ////qCDebug(KDENLIVE_LOG) << "Shuttle pos0 action: " << m_actionMap[0];
0050             Q_EMIT action(m_actionMap[0]);
0051         } else if (shuttle_pos > 0) {
0052             Q_EMIT forward(SPEEDS[magnitude]);
0053         }
0054     }
0055 }
0056
0057 void JogShuttleAction::slotButton(int button_id)
0058 {
0059     if (button_id >= m_actionMap.size() || m_actionMap[button_id].isEmpty()) {
0060         // TODO(fleury): Should this go to the status bar to inform the user ?
0061         // qCDebug(KDENLIVE_LOG) << "No action applied for button: " << button_id;
0062         return;
0063     }
0064     ////qCDebug(KDENLIVE_LOG) << "Shuttle button =" << button_id << ": action=" << m_actionMap[button_id];
0065     Q_EMIT action(m_actionMap[button_id]);
0066 }