1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
* Copyright (C) 2015-2018 Département de l'Instruction Publique (DIP-SEM)
*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef UBGRAPHICSCOMPASS_H_
#define UBGRAPHICSCOMPASS_H_
#include <QtGui>
#include <QtSvg>
#include "core/UB.h"
#include "domain/UBItem.h"
class UBGraphicsScene;
class UBGraphicsCompass: public QObject, public QGraphicsRectItem, public UBItem
{
Q_OBJECT;
public:
UBGraphicsCompass();
virtual ~UBGraphicsCompass();
enum { Type = UBGraphicsItemType::CompassItemType };
virtual int type() const
{
return Type;
}
virtual UBItem* deepCopy() const;
virtual void copyItemParameters(UBItem *copy) const;
protected:
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *styleOption, QWidget *widget);
virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
// Events
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
private slots:
void penColorChanged();
void lineWidthChanged();
private:
// Helpers
void paintAngleDisplay(QPainter *painter);
void paintRadiusDisplay(QPainter *painter);
void rotateAroundNeedle(qreal angle);
void drawArc();
void updateResizeCursor();
void updateDrawCursor();
void paintCenterCross();
QCursor moveCursor() const;
QCursor resizeCursor() const;
QCursor rotateCursor() const;
QCursor closeCursor() const;
QCursor drawCursor() const;
QRectF hingeRect() const;
QPointF needlePosition() const;
QPointF pencilPosition() const;
QRectF closeButtonRect() const;
QRectF resizeButtonRect() const;
virtual QPainterPath shape() const;
QPainterPath needleShape() const;
QPainterPath pencilShape() const;
QPainterPath needleBaseShape() const;
QPainterPath needleArmShape() const;
QPainterPath hingeShape() const;
QPainterPath pencilBaseShape() const;
QPainterPath pencilArmShape() const;
UBGraphicsScene* scene() const;
QColor drawColor() const;
QColor middleFillColor() const;
QColor edgeFillColor() const;
QFont font() const;
qreal angleInDegrees() const;
// Members
QCursor mOuterCursor;
QCursor mResizeCursor;
QCursor mDrawCursor;
bool mResizing;
bool mRotating;
bool mDrawing;
bool mShowButtons;
qreal mSpanAngleInDegrees;
QPointF mSceneArcStartPoint;
bool mDrewCircle;
QGraphicsSvgItem* mCloseSvgItem;
QGraphicsSvgItem* mResizeSvgItem;
qreal mAntiScaleRatio;
bool mDrewCenterCross;
// Constants
static const int sNeedleLength = 12;
static const int sNeedleWidth = 3;
static const int sNeedleBaseLength = 9;
static const int sNeedleBaseWidth = 9;
static const int sNeedleArmLeftWidth = 12;
static const int sNeedleArmRigthWidth = 16;
static const int sPencilLength = 12;
static const int sPencilWidth = 2;
static const int sPencilBaseLength = 9;
static const int sPencilBaseWidth = 9;
static const int sPencilArmLeftWidth = 16;
static const int sPencilArmRightWidth = 12;
static const int sCornerRadius = 2;
static const QRect sDefaultRect;
static const int sMinRadius;
static const int sDegreeToQtAngleUnit = 16;
static const int sFillTransparency = 127;
static const int sDrawTransparency = 192;
static const QColor sLightBackgroundEdgeFillColor;
static const QColor sLightBackgroundMiddleFillColor;
static const QColor sLightBackgroundDrawColor;
static const QColor sDarkBackgroundEdgeFillColor;
static const QColor sDarkBackgroundMiddleFillColor;
static const QColor sDarkBackgroundDrawColor;
static const int sDisplayRadiusOnPencilArmMinLength = 300;
static const int sDisplayRadiusUnitMinLength = 250;
};
#endif /* UBGRAPHICSCOMPASS_H_ */