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/***************************************************************************
LabelItem.cpp - label item within a SignalView
-------------------
begin : Sat Mar 26 2011
copyright : (C) 2011 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <QAction>
#include <QIcon>
#include <QMenu>
#include <KLocalizedString>
#include "libkwave/Label.h"
#include "libkwave/SignalManager.h"
#include "libkwave/String.h"
#include "libkwave/Utils.h"
#include "libkwave/undo/UndoModifyMetaDataAction.h"
#include "libkwave/undo/UndoTransactionGuard.h"
#include "libgui/LabelItem.h"
#include "libgui/SignalView.h"
//***************************************************************************
Kwave::LabelItem::LabelItem(Kwave::SignalView &view,
Kwave::SignalManager &signal_manager,
unsigned int index,
const Kwave::Label &label)
:Kwave::ViewItem(view, signal_manager),
m_index(index),
m_initial_pos(label.pos()),
m_current_pos(label.pos()),
m_description(label.name()),
m_undo_transaction(nullptr)
{
}
//***************************************************************************
Kwave::LabelItem::~LabelItem()
{
if (m_undo_transaction) {
// restore the previous data
qDebug("Kwave::LabelItem::~LabelItem() -> aborted -> reverting!");
m_undo_transaction->abort();
delete m_undo_transaction;
m_undo_transaction = nullptr;
}
}
//***************************************************************************
Kwave::ViewItem::Flags Kwave::LabelItem::flags() const
{
return Kwave::ViewItem::CanGrabAndMove;
}
//***************************************************************************
QString Kwave::LabelItem::toolTip(sample_index_t &ofs)
{
Q_UNUSED(ofs)
QString description = (m_description.length()) ?
i18nc("tooltip of a label, %1=index, %2=description/name",
"Label #%1 (%2)", m_index, m_description) :
i18nc("tooltip of a label, without description, %1=index",
"Label #%1", m_index);
QString hms = Kwave::ms2hms(m_view.samples2ms(m_current_pos));
QString tip = _("%1\n%2\n%3").arg(description).arg(m_current_pos).arg(hms);
return tip;
}
//***************************************************************************
void Kwave::LabelItem::appendContextMenu(QMenu *parent)
{
Q_ASSERT(parent);
if (!parent) return;
// locate the "label" menu
QMenu *label_menu = nullptr;
foreach (const QAction *action, parent->actions()) {
if (action->text() == i18n("Label")) {
label_menu = action->menu();
break;
}
}
// the context menu of a label has been activated
if (label_menu) {
// find the "New" action and disable it
foreach (QAction *action, label_menu->actions()) {
if (action->text() == i18n("New")) {
action->setEnabled(false);
break;
}
}
QAction *action_label_delete = label_menu->addAction(
QIcon::fromTheme(_("list-remove")),
i18n("&Delete"), this, SLOT(contextMenuLabelDelete()));
Q_ASSERT(action_label_delete);
if (!action_label_delete) return;
QAction *action_label_properties = label_menu->addAction(
QIcon::fromTheme(_("configure")),
i18n("&Properties..."), this, SLOT(contextMenuLabelProperties()));
Q_ASSERT(action_label_properties);
if (!action_label_properties) return;
}
}
//***************************************************************************
void Kwave::LabelItem::contextMenuLabelDelete()
{
emit sigCommand(_("label:delete(%1)").arg(m_index));
}
//***************************************************************************
void Kwave::LabelItem::contextMenuLabelProperties()
{
emit sigCommand(_("nomacro:label:edit(%1)").arg(m_index));
}
//***************************************************************************
QCursor Kwave::LabelItem::mouseCursor() const
{
return Qt::SizeHorCursor;
}
//***************************************************************************
void Kwave::LabelItem::moveTo(const QPoint &mouse_pos)
{
const sample_index_t new_pos = m_view.offset() +
m_view.pixels2samples(mouse_pos.x());
Kwave::Label label = m_signal_manager.findLabel(new_pos);
if (label.isNull()) {
// this is the first move ?
if (!m_undo_transaction) {
// there probably will be something to undo later
// create an undo transaction guard
m_undo_transaction = new(std::nothrow)
Kwave::UndoTransactionGuard(
m_signal_manager, i18n("Move Label"));
Q_ASSERT(m_undo_transaction);
if (!m_undo_transaction) return;
// save the previous label data for undo
Kwave::Label lbl = m_signal_manager.findLabel(m_initial_pos);
if (!m_undo_transaction->registerUndoAction(new(std::nothrow)
UndoModifyMetaDataAction(Kwave::MetaDataList(lbl)))) {
qWarning("Kwave::LabelItem::done(): saving undo data failed!");
return;
}
}
if (m_signal_manager.modifyLabel(m_index, new_pos,
m_description, false)) {
Kwave::Label lbl = m_signal_manager.findLabel(new_pos);
if (!lbl.isNull()) {
m_index = m_signal_manager.labelIndex(lbl);
m_current_pos = lbl.pos();
}
}
}
}
//***************************************************************************
void Kwave::LabelItem::done()
{
if (m_undo_transaction) {
// close the undo transaction (regularly, with undo action)
if (m_current_pos == m_initial_pos)
m_undo_transaction->abort();
delete m_undo_transaction;
m_undo_transaction = nullptr;
}
}
//***************************************************************************
//***************************************************************************
#include "moc_LabelItem.cpp"
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