KisSnapPixelStrategy.cpp

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/*
 *  SPDX-FileCopyrightText: 2019 Kuntal Majumder <hellozee@disroot.org>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#include "KisSnapPixelStrategy.h"
 
#include <QPainterPath>
#include "kis_global.h"
#include "kis_canvas2.h"
#include "KoSnapProxy.h"
 
KisSnapPixelStrategy::KisSnapPixelStrategy(KoSnapGuide::Strategy type):
    KoSnapStrategy(type)
{
}
 
KisSnapPixelStrategy::~KisSnapPixelStrategy()
{
}
 
bool KisSnapPixelStrategy::snap(const QPointF &mousePosition, KoSnapProxy *proxy, qreal maxSnapDistance)
{
    Q_UNUSED(maxSnapDistance);
    KisCanvas2 *canvas2 = dynamic_cast<KisCanvas2*>(proxy->canvas());
    KIS_SAFE_ASSERT_RECOVER_RETURN_VALUE(canvas2, false);
 
    const QPointF imagePos = canvas2->coordinatesConverter()->documentToImage(mousePosition);
    const QPointF alignedDocPoint = canvas2->coordinatesConverter()->imageToDocument(imagePos.toPoint());
    setSnappedPosition(alignedDocPoint, ToPoint);
 
    return true;
}
 
QPainterPath KisSnapPixelStrategy::decoration(const KoViewConverter &converter) const
{
    QSizeF unzoomedSize = converter.viewToDocument(QSizeF(5, 5));
    QPainterPath decoration;
    decoration.moveTo(snappedPosition() - QPointF(unzoomedSize.width(), 0));
    decoration.lineTo(snappedPosition() + QPointF(unzoomedSize.width(), 0));
    decoration.moveTo(snappedPosition() - QPointF(0, unzoomedSize.height()));
    decoration.lineTo(snappedPosition() + QPointF(0, unzoomedSize.height()));
    return decoration;
}