File indexing completed on 2024-06-23 04:25:57 

0001 /*
0002  * SPDX-FileCopyrightText: 2008 Cyrille Berger <cberger@cberger.net>
0003  * SPDX-FileCopyrightText: 2010 Geoffry Song <goffrie@gmail.com>
0004  * SPDX-FileCopyrightText: 2014 Wolthera van Hövell tot Westerflier <griffinvalley@gmail.com>
0005  * SPDX-FileCopyrightText: 2017 Scott Petrovic <scottpetrovic@gmail.com>
0006  * SPDX-FileCopyrightText: 2022 Julian Schmidt <julisch1107@web.de>
0007  *
0008  *  SPDX-License-Identifier: LGPL-2.0-or-later
0009  */
0010 
0011 #ifndef _INFINITERULER_ASSISTANT_H_
0012 #define _INFINITERULER_ASSISTANT_H_
0013 
0014 #include "RulerAssistant.h"
0015 
0016 #include <QObject>
0017 #include <QPolygonF>
0018 #include <QLineF>
0019 #include <QTransform>
0020 
0021 
0022 
0023 class InfiniteRulerAssistant : public RulerAssistant
0024 {
0025 public:
0026     InfiniteRulerAssistant();
0027     KisPaintingAssistantSP clone(QMap<KisPaintingAssistantHandleSP, KisPaintingAssistantHandleSP> &handleMap) const override;
0028     QPointF adjustPosition(const QPointF& point, const QPointF& strokeBegin, const bool snapToAny, qreal moveThresholdPt) override;
0029     void adjustLine(QPointF &point, QPointF& strokeBegin) override;
0030     QPointF getDefaultEditorPosition() const override;
0031     int numHandles() const override { return 2; }
0032     bool isAssistantComplete() const override;
0033 
0034 protected:
0035     void drawAssistant(QPainter& gc, const QRectF& updateRect, const KisCoordinatesConverter* converter, bool  cached = true,KisCanvas2* canvas=0, bool assistantVisible=true, bool previewVisible=true) override;
0036     
0037 private:
0038     QPointF project(const QPointF& pt, const QPointF& strokeBegin, const bool checkForInitialMovement, qreal moveThresholdPt);
0039     explicit InfiniteRulerAssistant(const InfiniteRulerAssistant &rhs, QMap<KisPaintingAssistantHandleSP, KisPaintingAssistantHandleSP> &handleMap);
0040   
0041     void drawSubdivisions(QPainter& gc, const KisCoordinatesConverter *converter);
0042     
0043     // Helper struct for clipLineParametric's return type
0044     struct ClippingResult {
0045         bool intersects;
0046         qreal tmin;
0047         qreal tmax;
0048     };
0049     // Like KisAlgebra2D::clipLineRect, but returns the parametric positions
0050     static ClippingResult clipLineParametric(QLineF line, QRectF rect, bool extendFirst=true, bool extendSecond=true);
0051 };
0052 
0053 class InfiniteRulerAssistantFactory : public KisPaintingAssistantFactory
0054 {
0055 public:
0056     InfiniteRulerAssistantFactory();
0057     ~InfiniteRulerAssistantFactory() override;
0058     QString id() const override;
0059     QString name() const override;
0060     KisPaintingAssistant* createPaintingAssistant() const override;
0061 };
0062 
0063 #endif