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- /**
- * \file
- *
- * \author Mattia Basaglia
- *
- * \copyright Copyright (C) 2013-2020 Mattia Basaglia
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
- #ifndef COLOR_WHEEL_HPP
- #define COLOR_WHEEL_HPP
- #include <QWidget>
- #include "colorwidgets_global.hpp"
- namespace color_widgets {
- /**
- * \brief Display an analog widget that allows the selection of a HSV color
- *
- * It has an outer wheel to select the Hue and an intenal square to select
- * Saturation and Lightness.
- */
- class QCP_EXPORT ColorWheel : public QWidget
- {
- Q_OBJECT
- Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged DESIGNABLE true STORED false )
- Q_PROPERTY(qreal hue READ hue WRITE setHue DESIGNABLE false )
- Q_PROPERTY(qreal saturation READ saturation WRITE setSaturation DESIGNABLE false )
- Q_PROPERTY(qreal value READ value WRITE setValue DESIGNABLE false )
- Q_PROPERTY(unsigned wheelWidth READ wheelWidth WRITE setWheelWidth NOTIFY wheelWidthChanged DESIGNABLE true )
- Q_PROPERTY(ShapeEnum selectorShape READ selectorShape WRITE setSelectorShape NOTIFY selectorShapeChanged DESIGNABLE true )
- Q_PROPERTY(bool rotatingSelector READ rotatingSelector WRITE setRotatingSelector NOTIFY rotatingSelectorChanged DESIGNABLE true )
- Q_PROPERTY(ColorSpaceEnum colorSpace READ colorSpace WRITE setColorSpace NOTIFY colorSpaceChanged DESIGNABLE true )
- public:
- enum ShapeEnum
- {
- ShapeTriangle, ///< A triangle
- ShapeSquare, ///< A square
- };
- enum AngleEnum
- {
- AngleFixed, ///< The inner part doesn't rotate
- AngleRotating, ///< The inner part follows the hue selector
- };
- enum ColorSpaceEnum
- {
- ColorHSV, ///< Use the HSV color space
- ColorHSL, ///< Use the HSL color space
- ColorLCH, ///< Use Luma Chroma Hue (Y_601')
- };
- Q_ENUM(ShapeEnum);
- Q_ENUM(AngleEnum);
- Q_ENUM(ColorSpaceEnum);
- explicit ColorWheel(QWidget *parent = 0);
- ~ColorWheel();
- /// Get current color
- QColor color() const;
- virtual QSize sizeHint() const Q_DECL_OVERRIDE;
- /// Get current hue in the range [0-1]
- qreal hue() const;
- /// Get current saturation in the range [0-1]
- qreal saturation() const;
- /// Get current value in the range [0-1]
- qreal value() const;
- /// Get the width in pixels of the outer wheel
- unsigned int wheelWidth() const;
- /// Set the width in pixels of the outer wheel
- void setWheelWidth(unsigned int w);
- /// Shape of the internal selector
- ShapeEnum selectorShape() const;
- /// Whether the internal selector should rotare in accordance with the hue
- bool rotatingSelector() const;
- /// Color space used to preview/edit the color
- ColorSpaceEnum colorSpace() const;
- public Q_SLOTS:
- /// Set current color
- void setColor(QColor c);
- /**
- * @param h Hue [0-1]
- */
- void setHue(qreal h);
- /**
- * @param s Saturation [0-1]
- */
- void setSaturation(qreal s);
- /**
- * @param v Value [0-1]
- */
- void setValue(qreal v);
- /// Sets the shape of the internal selector
- void setSelectorShape(ShapeEnum shape);
- /// Sets whether the internal selector should rotare in accordance with the hue
- void setRotatingSelector(bool rotating);
- /// Sets the color space used to preview/edit the color
- void setColorSpace(ColorSpaceEnum space);
- Q_SIGNALS:
- /**
- * Emitted when the user selects a color or setColor is called
- */
- void colorChanged(QColor);
- /**
- * Emitted when the user selects a color
- */
- void colorSelected(QColor);
- void wheelWidthChanged(unsigned);
- void selectorShapeChanged(ShapeEnum shape);
- void rotatingSelectorChanged(bool rotating);
- void colorSpaceChanged(ColorSpaceEnum space);
- /**
- * Emitted when the user releases from dragging
- */
- void editingFinished();
- protected:
- void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;
- void mouseMoveEvent(QMouseEvent *) Q_DECL_OVERRIDE;
- void mousePressEvent(QMouseEvent *) Q_DECL_OVERRIDE;
- void mouseReleaseEvent(QMouseEvent *) Q_DECL_OVERRIDE;
- void resizeEvent(QResizeEvent *) Q_DECL_OVERRIDE;
- void dragEnterEvent(QDragEnterEvent* event) Q_DECL_OVERRIDE;
- void dropEvent(QDropEvent* event) Q_DECL_OVERRIDE;
- protected:
- class Private;
- ColorWheel(QWidget *parent, Private* data);
- Private* data() const { return p; }
- private:
- Private * const p;
- };
- } // namespace color_widgets
- #endif // COLOR_WHEEL_HPP
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