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
|
/***************************************************************************
*
* Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
***************************************************************************/
#ifndef GRAPHEDGE_H
#define GRAPHEDGE_H
#include <tqcanvas.h>
class GraphNode;
/**
* Information used to draw arrow heads at the end of graph edges.
*/
struct ArrowInfo
{
/** The length of the arrow. */
double m_dLength;
/** The tangent of the arrow's angle from the main line. */
double m_dTan;
/** Holds the value sqrt(1 + dTan^2). */
double m_dSqrt;
};
/**
* Draws a directed edge on a canvas.
* The edge is composed of a spline, which is its body, and a polygon, which
* is its head.
* @author Elad Lahav
*/
class GraphEdge : public TQCanvasPolygonalItem
{
public:
GraphEdge(TQCanvas*, GraphNode*, GraphNode*);
~GraphEdge();
void setCallInfo(const TQString&, const TQString&, const TQString&);
void setPoints(const TQPointArray&, const ArrowInfo&);
TQString getTip() const;
/**
* @return The coordinates of the convex hull surrounding the edge
*/
virtual TQPointArray areaPoints() const { return m_arrArea; }
/**
* @return The head node of the edge
*/
GraphNode* getHead() { return m_pHead; }
/**
* @return The tail node of the edge
*/
GraphNode* getTail() { return m_pTail; }
/**
* @return The bounding rectangle of the edge's head
*/
TQRect tipRect() const { return m_rcTip; }
/**
* @return The file path for this call
*/
const TQString& getFile() const { return m_sFile; }
/**
* @return The line number for this call
*/
uint getLine() const { return m_sLine.toUInt(); }
/**
* @return The call's text
*/
const TQString& getText() const { return m_sText; }
/** Identifies this class among other TQCanvasItem classes. */
static int RTTI;
/**
* @return The class identifier
*/
virtual int rtti() const { return RTTI; }
protected:
virtual void drawShape(TQPainter&);
private:
/** The edge's starting point. */
GraphNode* m_pHead;
/** The edge's end point. */
GraphNode* m_pTail;
/** The points of the polygon part of the edge. */
TQPointArray m_arrPoly;
/** Control points for the spline part of the edge. */
TQPointArray m_arrCurve;
TQPointArray m_arrArea;
/** The bounding rectangle of the edge's head, used for displaying the
edge's tool-tip. */
TQRect m_rcTip;
/** The call's source file. */
TQString m_sFile;
/** The call's line number. */
TQString m_sLine;
/** The call's text. */
TQString m_sText;
void makeArrowhead(const ArrowInfo&);
};
#endif
|
