File indexing completed on 2024-12-22 04:12:58 

0001 /*
0002  *  SPDX-FileCopyrightText: 2011 Dmitry Kazakov <dimula73@gmail.com>
0003  *
0004  *  SPDX-License-Identifier: GPL-2.0-or-later
0005  */
0006 
0007 #ifndef __KIS_PAINTING_INFORMATION_BUILDER_H
0008 #define __KIS_PAINTING_INFORMATION_BUILDER_H
0009 
0010 #include <QObject>
0011 #include <QVector>
0012 
0013 #include "kis_types.h"
0014 #include "kritaui_export.h"
0015 #include <brushengine/kis_paint_information.h>
0016 
0017 class KoPointerEvent;
0018 class KisToolFreehand;
0019 class KisCoordinatesConverter;
0020 class KisSpeedSmoother;
0021 class KoCanvasResourceProvider;
0022 
0023 class KRITAUI_EXPORT KisPaintingInformationBuilder : public QObject
0024 {
0025     Q_OBJECT
0026 
0027 public:
0028     KisPaintingInformationBuilder();
0029     ~KisPaintingInformationBuilder() override;
0030 
0031     KisPaintInformation startStroke(KoPointerEvent *event, int timeElapsed, const KoCanvasResourceProvider *manager);
0032 
0033     KisPaintInformation continueStroke(KoPointerEvent *event,
0034                                        int timeElapsed);
0035 
0036     KisPaintInformation hover(const QPointF &imagePoint,
0037                               const KoPointerEvent *event,
0038                               bool isStrokeStarted);
0039 
0040     qreal pressureToCurve(qreal pressure);
0041 
0042     void reset();
0043 
0044 protected Q_SLOTS:
0045     void updateSettings();
0046 
0047 protected:
0048     virtual QPointF adjustDocumentPoint(const QPointF &point, const QPointF &startPoint);
0049     virtual QPointF documentToImage(const QPointF &point);
0050     virtual QPointF imageToView(const QPointF &point);
0051     virtual qreal calculatePerspective(const QPointF &documentPoint);
0052 
0053     virtual qreal canvasRotation() const;
0054     virtual bool canvasMirroredX() const;
0055     virtual bool canvasMirroredY() const;
0056 
0057 private:
0058 
0059     KisPaintInformation createPaintingInformation(KoPointerEvent *event,
0060                                                   int timeElapsed);
0061 
0062     /**
0063      * Defines how many discrete samples are stored in a precomputed array
0064      * of different pressures.
0065      */
0066     static const int LEVEL_OF_PRESSURE_RESOLUTION;
0067 
0068 private:
0069     QVector<qreal> m_pressureSamples;
0070     QPointF m_startPoint;
0071     QScopedPointer<KisSpeedSmoother> m_speedSmoother;
0072     bool m_pressureDisabled;
0073     int m_maxAllowedSpeedValue = 30;
0074 };
0075 
0076 class KRITAUI_EXPORT KisConverterPaintingInformationBuilder : public KisPaintingInformationBuilder
0077 {
0078     Q_OBJECT
0079 
0080 public:
0081     KisConverterPaintingInformationBuilder(const KisCoordinatesConverter *converter);
0082 
0083 protected:
0084     QPointF documentToImage(const QPointF &point) override;
0085     QPointF imageToView(const QPointF &point) override;
0086 
0087     qreal canvasRotation() const override;
0088     bool canvasMirroredX() const override;
0089     bool canvasMirroredY() const override;
0090 
0091 private:
0092     const KisCoordinatesConverter *m_converter;
0093 };
0094 
0095 class KRITAUI_EXPORT KisToolFreehandPaintingInformationBuilder : public KisPaintingInformationBuilder
0096 {
0097     Q_OBJECT
0098 
0099 public:
0100     KisToolFreehandPaintingInformationBuilder(KisToolFreehand *tool);
0101 
0102 protected:
0103     QPointF documentToImage(const QPointF &point) override;
0104     QPointF imageToView(const QPointF &point) override;
0105     QPointF adjustDocumentPoint(const QPointF &point, const QPointF &startPoint) override;
0106     qreal calculatePerspective(const QPointF &documentPoint) override;
0107 
0108     qreal canvasRotation() const override;
0109     bool canvasMirroredX() const override;
0110     bool canvasMirroredY() const override;
0111 
0112 private:
0113     KisToolFreehand *m_tool;
0114 };
0115 
0116 #endif /* __KIS_PAINTING_INFORMATION_BUILDER_H */