All Classes Namespaces Functions Variables Enumerations Properties Pages
strokemanager.h
1 /*
2 
3 Pencil2D - Traditional Animation Software
4 Copyright (C) 2005-2007 Patrick Corrieri & Pascal Naidon
5 Copyright (C) 2012-2020 Matthew Chiawen Chang
6 
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 as published by the Free Software Foundation; version 2 of the License.
10 
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15 
16 */
17 
18 #ifndef STROKEMANAGER_H
19 #define STROKEMANAGER_H
20 
21 #include <ctime>
22 #include <QQueue>
23 #include <QPointF>
24 #include <QList>
25 #include <QTimer>
26 #include <QElapsedTimer>
27 #include "object.h"
28 
29 
30 class PointerEvent;
31 
32 class StrokeManager : public QObject
33 {
34 public:
35  StrokeManager();
36 
37  void pointerPressEvent(PointerEvent* event);
38  void pointerMoveEvent(PointerEvent* event);
39  void pointerReleaseEvent(PointerEvent* event);
40  void setPressure(float pressure);
41  void setStabilizerLevel(int level);
42 
43  float getPressure() { return mTabletPressure; }
44  int getStabilizerLevel() { return mStabilizerLevel; }
45  bool isTabletInUse() { return mTabletInUse; }
46  void setTabletInUse(bool inUse) { mTabletInUse = inUse; }
47  bool isActive() { return mStrokeStarted; }
48 
49  QList<QPointF> interpolateStroke();
50  void interpolatePoll();
51  QPointF interpolateStart(QPointF firstPoint);
52  void interpolatePollAndPaint();
53  void interpolateEnd();
54  void smoothMousePos(QPointF pos);
55  QList<QPointF> meanInpolOp(QList<QPointF> points, qreal x, qreal y, qreal pressure);
56  QList<QPointF> noInpolOp(QList<QPointF> points);
57  QList<QPointF> tangentInpolOp(QList<QPointF> points);
58 
59  QPointF getLastPressPixel() const { return mLastPressPixel; }
60  QPointF getCurrentPixel() const { return mCurrentPixel; }
61  QPointF getLastPixel() const { return mLastPixel; }
62  QPointF getLastMeanPixel() const { return mLastInterpolated; }
63  QPointF getMousePos() const { return mousePos; }
64  QPointF getCurrentPressPixel() const { return mCurrentPressPixel; }
65 
66 private:
67  static const int STROKE_QUEUE_LENGTH = 3; // 4 points for cubic bezier
68 
69  void reset();
70 
71  float pressure = 1.0f; // last pressure
72  QQueue<QPointF> strokeQueue;
73  QQueue<qreal> pressureQueue;
74 
75  QTimer timer;
76 
77  QElapsedTimer mSingleshotTime;
78  QPointF mCurrentPressPixel = { 0, 0 };
79  QPointF mLastPressPixel2 = { 0, 0 };
80  QPointF mLastPressPixel = { 0, 0 };
81  QPointF mCurrentPixel = { 0, 0 };
82  QPointF mLastPixel = { 0, 0 };
83  QPointF mLastInterpolated = { 0, 0 };
84  QPointF mousePos = { 0, 0 };
85 
86  QPointF m_previousTangent;
87  bool mHasTangent = false;
88  int previousTime = 0;
89  bool mStrokeStarted = false;
90  bool mTabletInUse = false;
91  float mTabletPressure = 1.f;
92  int mStabilizerLevel = 0;
93 
94  clock_t m_timeshot;
95 };
96 
97 #endif // STROKEMANAGER_H
virtual bool event(QEvent *e)