kis_guides_decoration.cpp

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/*
 *  SPDX-FileCopyrightText: 2016 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#include "kis_guides_decoration.h"
 
#include <KisDocument.h>
#include "kis_config.h"
#include "kis_guides_config.h"
#include "kis_coordinates_converter.h"
 
struct KisGuidesDecoration::Private
{
    KisGuidesConfig guidesConfig;
};
 
KisGuidesDecoration::KisGuidesDecoration(QPointer<KisView> view)
    : KisCanvasDecoration(GUIDES_DECORATION_ID, view),
      m_d(new Private)
{
    setPriority(90);
}
 
KisGuidesDecoration::~KisGuidesDecoration()
{
}
 
void KisGuidesDecoration::setGuidesConfig(const KisGuidesConfig &value)
{
    m_d->guidesConfig = value;
}
 
const KisGuidesConfig& KisGuidesDecoration::guidesConfig() const
{
    return m_d->guidesConfig;
}
 
 
void KisGuidesDecoration::drawDecoration(QPainter &painter, const QRectF& updateArea, const KisCoordinatesConverter *converter, KisCanvas2 *canvas)
{
    Q_UNUSED(canvas);
 
    const qreal borderDelta = 2.0;
    const QPen guidesPen(m_d->guidesConfig.guidesPen());
 
    painter.save();
    painter.setPen(guidesPen);
    painter.setTransform(QTransform());
    painter.setRenderHints(QPainter::Antialiasing, false);
    painter.setRenderHints(QPainter::Antialiasing, false);
 
    Q_FOREACH (qreal guide, m_d->guidesConfig.horizontalGuideLines()) {
        if (guide < updateArea.top() - borderDelta ||
            guide > updateArea.bottom() + borderDelta) {
 
            continue;
        }
 
        const QPoint p0 = converter->documentToWidget(QPointF(updateArea.left() - borderDelta, guide)).toPoint();
        const QPoint p1 = converter->documentToWidget(QPointF(updateArea.right() + borderDelta, guide)).toPoint();
        painter.drawLine(p0, p1);
    }
 
    Q_FOREACH (qreal guide, m_d->guidesConfig.verticalGuideLines()) {
        if (guide < updateArea.left() - borderDelta ||
            guide > updateArea.right() + borderDelta) {
 
            continue;
        }
 
        const QPoint p0 = converter->documentToWidget(QPointF(guide, updateArea.top() - borderDelta)).toPoint();
        const QPoint p1 = converter->documentToWidget(QPointF(guide, updateArea.bottom() + borderDelta)).toPoint();
        painter.drawLine(p0, p1);
    }
 
    painter.restore();
}