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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #ifndef COMPOSITION_H
++ #define COMPOSITION_H
++
++ #include "arthurwidgets.h"
++
++ #include <QBasicTimer>
++ #include <QPainter>
++ #include <QEvent>
++
++ #include <memory>
++
++ QT_BEGIN_NAMESPACE
++ class QPushButton;
++ class QRadioButton;
++ QT_END_NAMESPACE
++
++ class CompositionWidget : public QWidget
++ {
++ Q_OBJECT
++
++ public:
++ explicit CompositionWidget(QWidget *parent = nullptr);
++ ~CompositionWidget();
++
++ public slots:
++ void nextMode();
++
++ private:
++ bool m_cycle_enabled;
++
++ QRadioButton *rbClear;
++ QRadioButton *rbSource;
++ QRadioButton *rbDest;
++ QRadioButton *rbSourceOver;
++ QRadioButton *rbDestOver;
++ QRadioButton *rbSourceIn;
++ QRadioButton *rbDestIn;
++ QRadioButton *rbSourceOut;
++ QRadioButton *rbDestOut;
++ QRadioButton *rbSourceAtop;
++ QRadioButton *rbDestAtop;
++ QRadioButton *rbXor;
++
++ QRadioButton *rbPlus;
++ QRadioButton *rbMultiply;
++ QRadioButton *rbScreen;
++ QRadioButton *rbOverlay;
++ QRadioButton *rbDarken;
++ QRadioButton *rbLighten;
++ QRadioButton *rbColorDodge;
++ QRadioButton *rbColorBurn;
++ QRadioButton *rbHardLight;
++ QRadioButton *rbSoftLight;
++ QRadioButton *rbDifference;
++ QRadioButton *rbExclusion;
++ };
++
++ class CompositionRenderer : public ArthurFrame
++ {
++ Q_OBJECT
++
++ enum ObjectType { NoObject, Circle, Rectangle, Image };
++
++ Q_PROPERTY(int circleColor READ circleColor WRITE setCircleColor)
++ Q_PROPERTY(int circleAlpha READ circleAlpha WRITE setCircleAlpha)
++ Q_PROPERTY(bool animation READ animationEnabled WRITE setAnimationEnabled)
++
++ public:
++ explicit CompositionRenderer(QWidget *parent = nullptr);
++ ~CompositionRenderer();
++
++ void paint(QPainter *) override;
++
++ void setCirclePos(const QPointF &pos);
++
++ QSize sizeHint() const override { return QSize(500, 400); }
++
++ bool animationEnabled() const { return m_animation_enabled; }
++ int circleColor() const { return m_circle_hue; }
++ int circleAlpha() const { return m_circle_alpha; }
++
++ protected:
++ void mousePressEvent(QMouseEvent *) override;
++ void mouseMoveEvent(QMouseEvent *) override;
++ void mouseReleaseEvent(QMouseEvent *) override;
++ void timerEvent(QTimerEvent *) override;
++
++ public slots:
++ void setClearMode() { m_composition_mode = QPainter::CompositionMode_Clear; update(); }
++ void setSourceMode() { m_composition_mode = QPainter::CompositionMode_Source; update(); }
++ void setDestMode() { m_composition_mode = QPainter::CompositionMode_Destination; update(); }
++ void setSourceOverMode() { m_composition_mode = QPainter::CompositionMode_SourceOver; update(); }
++ void setDestOverMode() { m_composition_mode = QPainter::CompositionMode_DestinationOver; update(); }
++ void setSourceInMode() { m_composition_mode = QPainter::CompositionMode_SourceIn; update(); }
++ void setDestInMode() { m_composition_mode = QPainter::CompositionMode_DestinationIn; update(); }
++ void setSourceOutMode() { m_composition_mode = QPainter::CompositionMode_SourceOut; update(); }
++ void setDestOutMode() { m_composition_mode = QPainter::CompositionMode_DestinationOut; update(); }
++ void setSourceAtopMode() { m_composition_mode = QPainter::CompositionMode_SourceAtop; update(); }
++ void setDestAtopMode() { m_composition_mode = QPainter::CompositionMode_DestinationAtop; update(); }
++ void setXorMode() { m_composition_mode = QPainter::CompositionMode_Xor; update(); }
++
++ void setPlusMode() { m_composition_mode = QPainter::CompositionMode_Plus; update(); }
++ void setMultiplyMode() { m_composition_mode = QPainter::CompositionMode_Multiply; update(); }
++ void setScreenMode() { m_composition_mode = QPainter::CompositionMode_Screen; update(); }
++ void setOverlayMode() { m_composition_mode = QPainter::CompositionMode_Overlay; update(); }
++ void setDarkenMode() { m_composition_mode = QPainter::CompositionMode_Darken; update(); }
++ void setLightenMode() { m_composition_mode = QPainter::CompositionMode_Lighten; update(); }
++ void setColorDodgeMode() { m_composition_mode = QPainter::CompositionMode_ColorDodge; update(); }
++ void setColorBurnMode() { m_composition_mode = QPainter::CompositionMode_ColorBurn; update(); }
++ void setHardLightMode() { m_composition_mode = QPainter::CompositionMode_HardLight; update(); }
++ void setSoftLightMode() { m_composition_mode = QPainter::CompositionMode_SoftLight; update(); }
++ void setDifferenceMode() { m_composition_mode = QPainter::CompositionMode_Difference; update(); }
++ void setExclusionMode() { m_composition_mode = QPainter::CompositionMode_Exclusion; update(); }
++
++ void setCircleAlpha(int alpha) { m_circle_alpha = alpha; update(); }
++ void setCircleColor(int hue) { m_circle_hue = hue; update(); }
++ void setAnimationEnabled(bool enabled);
++
++ private:
++ void updateCirclePos();
++ void drawBase(QPainter &p);
++ void drawSource(QPainter &p);
++
++ QPainter::CompositionMode m_composition_mode;
++
++ QImage m_image;
++ QImage m_buffer;
++ QImage m_base_buffer;
++
++ int m_circle_alpha;
++ int m_circle_hue;
++
++ QPointF m_circle_pos;
++ QPointF m_offset;
++
++ ObjectType m_current_object;
++ bool m_animation_enabled;
++ QBasicTimer m_animationTimer;
++ };
++
++ #endif // COMPOSITION_H