File indexing completed on 2024-06-16 04:17:54 

0001 /*
0002  *  SPDX-FileCopyrightText: 2014 Dmitry Kazakov <dimula73@gmail.com>
0003  *
0004  *  SPDX-License-Identifier: GPL-2.0-or-later
0005  */
0006 
0007 #ifndef __KIS_CONSTRAINED_RECT_H
0008 #define __KIS_CONSTRAINED_RECT_H
0009 
0010 #include <QObject>
0011 #include <QRect>
0012 
0013 
0014 
0015 class KisConstrainedRect : public QObject
0016 {
0017     Q_OBJECT
0018 
0019 public:
0020     enum HandleType {
0021         None = 0,
0022         UpperLeft,
0023         UpperRight,
0024         LowerLeft,
0025         LowerRight,
0026         Upper,
0027         Lower,
0028         Left,
0029         Right,
0030         Inside,
0031         Creation
0032     };
0033 
0034 public:
0035     KisConstrainedRect();
0036     ~KisConstrainedRect() override;
0037 
0038     void setRectInitial(const QRect &rect);
0039     void setCropRect(const QRect &cropRect);
0040 
0041     bool centered() const;
0042     void setCentered(bool value);
0043 
0044     bool canGrow() const;
0045     void setCanGrow(bool value);
0046 
0047     QRect rect() const;
0048 
0049     qreal ratio() const;
0050 
0051     void moveHandle(HandleType handle, const QPoint &offset, const QRect &oldRect);
0052     QPointF handleSnapPoint(HandleType handle, const QPointF &cursorPos);
0053 
0054     void setRatio(qreal value);
0055     void setOffset(const QPoint &offset);
0056     void setWidth(int value);
0057     void setHeight(int value);
0058 
0059     bool widthLocked() const;
0060     void setWidthLocked(bool value);
0061 
0062     bool heightLocked() const;
0063     void setHeightLocked(bool value);
0064 
0065     bool ratioLocked() const;
0066     void setRatioLocked(bool value);
0067 
0068     void normalize();
0069 
0070 Q_SIGNALS:
0071     void sigValuesChanged();
0072     void sigLockValuesChanged();
0073 
0074 private:
0075 
0076     int widthFromHeightUnsignedRatio(int height, qreal ratio, int oldWidth) const;
0077     int heightFromWidthUnsignedRatio(int width, qreal ratio, int oldHeight) const;
0078 
0079     void assignNewSize(const QSize &newSize);
0080     void storeRatioSafe(const QSize &newSize);
0081 private:
0082     bool m_centered {false};
0083     bool m_canGrow {true};
0084     QRect m_rect;
0085     qreal m_ratio {1.0};
0086 
0087     bool m_widthLocked {false};
0088     bool m_heightLocked {false};
0089     bool m_ratioLocked {false};
0090 
0091     QRect m_cropRect;
0092 };
0093 
0094 #endif /* __KIS_CONSTRAINED_RECT_H */