kis_color_selector_triangle.h

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/*
 *  SPDX-FileCopyrightText: 2010 Adam Celarek <kdedev at xibo dot at>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef KIS_COLOR_SELECTOR_TRIANGLE_H
#define KIS_COLOR_SELECTOR_TRIANGLE_H
 
#include "kis_color_selector_component.h"
#include "kis_paint_device.h"
#include <QSize>
#include <QImage>
 
namespace Acs {
    class PixelCacheRenderer;
}
 
class KisColorSelectorTriangle : public KisColorSelectorComponent
{
    Q_OBJECT
public:
    explicit KisColorSelectorTriangle(KisColorSelector* parent);
    void setColor(const KoColor &color) override;
 
protected:
    void paint(QPainter*) override;
    KoColor selectColor(int x, int y) override;
    bool containsPointInComponentCoords(int x, int y) const override;
 
private:
    friend class Acs::PixelCacheRenderer;
    KoColor colorAt(float x, float y) const;
 
private:
    int triangleWidth() const;
    int triangleHeight() const;
    void updatePixelCache(qreal devicePixelRatioF);
    QPoint widgetToTriangleCoordinates(const QPoint& point) const;
    QPoint triangleToWidgetCoordinates(const QPoint& point) const;
 
private:
    QImage m_renderedPixelCache;
    KisPaintDeviceSP m_realPixelCache;
    QSize m_cachedSize;
    QPointF m_lastClickPos;
    qreal m_cacheDevicePixelRatioF {1.0};
};
 
#endif // KIS_COLOR_SELECTOR_TRIANGLE_H