KoPathPointMoveStrategy.cpp

Go to the documentation of this file.

/* This file is part of the KDE project
 * SPDX-FileCopyrightText: 2006 Jan Hambrecht <jaham@gmx.net>
 * SPDX-FileCopyrightText: 2006 Thorsten Zachmann <zachmann@kde.org>
 * SPDX-FileCopyrightText: 2007 Thomas Zander <zander@kde.org>
 *
 * SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
#include "KoPathPointMoveStrategy.h"
#include "KoInteractionStrategy_p.h"
 
#include "commands/KoPathPointMoveCommand.h"
#include "KoPathTool.h"
#include "KoPathToolSelection.h"
#include "KoSnapGuide.h"
#include "KoCanvasBase.h"
#include "kis_global.h"
#include "kis_command_utils.h"
 
KoPathPointMoveStrategy::KoPathPointMoveStrategy(KoPathTool *tool, const QPointF &mousePosition, const QPointF &pointPosition)
    : KoInteractionStrategy(*(new KoInteractionStrategyPrivate(tool))),
    m_startMousePosition(mousePosition),
    m_startPointPosition(pointPosition),
    m_tool(tool)
{
}
 
KoPathPointMoveStrategy::~KoPathPointMoveStrategy()
{
}
 
void KoPathPointMoveStrategy::handleMouseMove(const QPointF &mouseLocation, Qt::KeyboardModifiers modifiers)
{
    QPointF deltaMovement = mouseLocation - m_startMousePosition;
    QPointF newPosition = m_tool->canvas()->snapGuide()->snap(m_startPointPosition + deltaMovement, modifiers);
    QPointF move = newPosition - m_startPointPosition;
 
    if (modifiers & Qt::ShiftModifier) {
        // Limit change to one direction only
        move = snapToClosestAxis(move);
    }
 
    KoPathToolSelection * selection = dynamic_cast<KoPathToolSelection*>(m_tool->selection());
    if (! selection)
        return;
 
    KisCommandUtils::redoAndMergeIntoAccumulatingCommand(
        new KoPathPointMoveCommand(selection->selectedPointsData(), move - m_move),
        m_intermediateCommand);
 
    m_move = move;
}
 
void KoPathPointMoveStrategy::finishInteraction(Qt::KeyboardModifiers modifiers)
{
    Q_UNUSED(modifiers);
}
 
KUndo2Command* KoPathPointMoveStrategy::createCommand()
{
    if (m_intermediateCommand) {
        return new KisCommandUtils::SkipFirstRedoWrapper(m_intermediateCommand.take());
    }
    return nullptr;
}