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
|
/*
* Copyright (c) 2012 Mateusz Piękos
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
#include "FreehandLineItem.h"
namespace Swift {
FreehandLineItem::FreehandLineItem(QGraphicsItem* parent) : QGraphicsItem(parent) {
}
QRectF FreehandLineItem::boundingRect() const
{
return boundRect;
}
void FreehandLineItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* /*option*/, QWidget* /*widget*/)
{
painter->setPen(pen_);
if (points_.size() > 0) {
QVector<QPointF>::const_iterator it = points_.begin();
QPointF previous = *it;
++it;
for (; it != points_.end(); ++it) {
painter->drawLine(previous, *it);
previous = *it;
}
}
}
void FreehandLineItem::setStartPoint(QPointF point)
{
points_.clear();
points_.append(point);
QRectF rect(point, point);
prepareGeometryChange();
boundRect = rect;
}
void FreehandLineItem::lineTo(QPointF point)
{
qreal x1, x2, y1, y2;
x1 = points_.last().x();
x2 = point.x();
y1 = points_.last().y();
y2 = point.y();
if (x1 > x2) {
qreal temp = x1;
x1 = x2;
x2 = temp;
}
if (y1 > y2) {
qreal temp = y1;
y1 = y2;
y2 = temp;
}
QRectF rect(x1-1, y1-1, x2+1-x1, y2+1-y1);
points_.append(point);
prepareGeometryChange();
boundRect |= rect;
}
bool FreehandLineItem::collidesWithPath(const QPainterPath& path, Qt::ItemSelectionMode /*mode*/) const
{
QVector<QPointF>::const_iterator it;
QSizeF size(1,1);
for (it = points_.begin(); it != points_.end(); ++it) {
if (path.intersects(QRectF(*it, size))) {
return true;
}
}
return false;
}
void FreehandLineItem::setPen(const QPen& pen)
{
pen_ = pen;
update(boundRect);
}
QPen FreehandLineItem::pen() const
{
return pen_;
}
const QVector<QPointF>& FreehandLineItem::points() const {
return points_;
}
int FreehandLineItem::type() const {
return Type;
}
}
|
