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commands.cpp
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123 lines (101 loc) · 3.34 KB
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/*
* This file is part of the GreasePad distribution (https://github.com/FraunhoferIOSB/GreasePad).
* Copyright (c) 2022-2026 Jochen Meidow, Fraunhofer IOSB
*
* 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 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "commands.h"
#include "gui/mainscene.h"
#include "reasoning/state.h"
#include <QDebug>
#include <QGraphicsItem>
#include <QStringLiteral>
#include <QUndoCommand>
#include <memory>
#include <utility>
namespace Cmd {
GUI::MainScene * Undo::s_scene = nullptr;
Undo::Undo( QUndoCommand *parent,
std::unique_ptr<State> &p,
std::unique_ptr<State> &n, State *st)
: QUndoCommand(parent),
next_state_(std::move(n)),
prev_state_(std::move(p)),
current_state_(st)
{
// qDebug() << Q_FUNC_INFO;
}
void Undo::undo()
{
//qDebug() << Q_FUNC_INFO;
*current_state_ = *prev_state_; // set
auto *scn = scene();
if (scn==nullptr) {
return;
}
scn->removeAllItems();
scn->addGraphicItems( prev_state_.get() );
}
void Undo::redo()
{
//qDebug() << Q_FUNC_INFO;
*current_state_ = *next_state_; // copy content
auto *scn = scene();
if (scn==nullptr) {
return;
}
scn->removeAllItems();
scn->addGraphicItems( next_state_.get() );
}
AddStroke::AddStroke( State *curr,
std::unique_ptr<State> &p,
std::unique_ptr<State> &n,
QUndoCommand *parent) : Undo(parent, p, n, curr)
{
// qDebug() << Q_FUNC_INFO;
setText( "add stroke" );
}
DeleteSelection::DeleteSelection( State *st,
std::unique_ptr<State> & p,
std::unique_ptr<State> & n,
QUndoCommand *parent) : Undo(parent, p,n, st)
{
// qDebug() << Q_FUNC_INFO ;
auto *scn = scene();
if (scn==nullptr) {
return;
}
setText( QString( scn->selectedItems().size()==1 ?
"delete selected item" : "delete selected items") );
}
TabulaRasa::TabulaRasa( State *st,
std::unique_ptr<State> &p,
std::unique_ptr<State> &n,
QUndoCommand *parent )
: Undo(parent, p,n, st)
{
// qDebug() << Q_FUNC_INFO ;
setText( "clear all" );
}
ReplaceStateWithFileContent::ReplaceStateWithFileContent( const QString & fileName,
State *curr,
std::unique_ptr<State> & p,
std::unique_ptr<State> & n,
QUndoCommand *parent)
: Undo(parent, p,n, curr)
{
// qDebug() << Q_FUNC_INFO;
setText( fileName );
}
} // namespace Cmd