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
|
/*
* This file is part of the KDE project
*
* SPDX-FileCopyrightText: 2013 Dan Leinir Turthra Jensen <admin@leinir.dk>
*
* SPDX-License-Identifier: LGPL-2.0-or-later
*
*/
#include "CQLinkArea.h"
#include <QMouseEvent>
#include <QPainter>
#include <qquickitem.h>
struct LinkLayerLink {
QRectF linkRect;
QUrl linkTarget;
};
class CQLinkArea::Private
{
public:
Private()
: clickInProgress(false)
, wiggleFactor(4)
{
}
QVariantList links;
QList<LinkLayerLink> realLinks;
bool clickInProgress;
QPointF clickLocation;
int wiggleFactor;
QSizeF sourceSize;
QColor linkColor;
};
CQLinkArea::CQLinkArea(QQuickItem *parent)
: QQuickPaintedItem(parent)
, d(new Private)
{
setAcceptedMouseButtons(Qt::LeftButton | Qt::RightButton | Qt::MiddleButton);
setAcceptTouchEvents(true);
}
CQLinkArea::~CQLinkArea() = default;
void CQLinkArea::paint(QPainter *painter)
{
painter->save();
painter->setPen(Qt::transparent);
painter->setBrush(QBrush(d->linkColor));
for (const LinkLayerLink &link : std::as_const(d->realLinks)) {
QRectF target((link.linkRect.y() / d->sourceSize.height()) * height(),
(link.linkRect.x() / d->sourceSize.width()) * width(),
(link.linkRect.height() / d->sourceSize.height()) * height(),
(link.linkRect.width() / d->sourceSize.width()) * width());
painter->drawRect(target);
}
painter->restore();
}
QVariantList CQLinkArea::links() const
{
return d->links;
}
void CQLinkArea::setLinks(const QVariantList &newLinks)
{
d->links = newLinks;
// run through the new data and cache a data list with the information
// so we don't have to interpret the QObjects all the time
d->realLinks.clear();
foreach (const QVariant &var, newLinks) {
QObject *obj = var.value<QObject *>();
if (!obj) {
continue;
}
LinkLayerLink link;
link.linkRect = obj->property("linkRect").toRectF().adjusted(-d->wiggleFactor, -d->wiggleFactor, d->wiggleFactor, d->wiggleFactor);
link.linkTarget = obj->property("linkTarget").toUrl();
d->realLinks.append(link);
}
Q_EMIT linksChanged();
}
QSizeF CQLinkArea::sourceSize() const
{
return d->sourceSize;
}
void CQLinkArea::setSourceSize(const QSizeF &size)
{
if (size != d->sourceSize) {
d->sourceSize = size;
Q_EMIT sourceSizeChanged();
update();
}
}
QColor CQLinkArea::linkColor() const
{
return d->linkColor;
}
void CQLinkArea::setLinkColor(const QColor &color)
{
if (color != d->linkColor) {
d->linkColor = color;
d->linkColor.setAlphaF(0.25);
Q_EMIT linkColorChanged();
update();
}
}
void CQLinkArea::mousePressEvent(QMouseEvent *event)
{
d->clickInProgress = true;
d->clickLocation = event->pos();
}
void CQLinkArea::mouseReleaseEvent(QMouseEvent *event)
{
d->clickInProgress = false;
// Don't activate anything if the finger has moved too far
QRect rect((d->clickLocation - QPointF(d->wiggleFactor, d->wiggleFactor)).toPoint(), QSize(d->wiggleFactor * 2, d->wiggleFactor * 2));
if (!rect.contains(event->pos())) {
return;
}
QUrl url;
QPointF inverted(event->pos().y(), event->pos().x());
foreach (const LinkLayerLink &link, d->realLinks) {
QRectF scaledTarget((link.linkRect.x() / d->sourceSize.width()) * width(),
(link.linkRect.y() / d->sourceSize.height()) * height(),
(link.linkRect.width() / d->sourceSize.width()) * width(),
(link.linkRect.height() / d->sourceSize.height()) * height());
if (scaledTarget.contains(inverted)) {
url = link.linkTarget;
break;
}
}
if (url.isEmpty()) {
Q_EMIT clicked();
} else {
Q_EMIT linkClicked(url);
}
}
void CQLinkArea::mouseDoubleClickEvent(QMouseEvent *event)
{
Q_UNUSED(event)
Q_EMIT doubleClicked();
}
|
