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
|
#include "kristalltextbrowser.hpp"
#include "kristall.hpp"
#include <QMouseEvent>
#include <QScroller>
#include <QTouchDevice>
#include <QRegularExpression>
#include <QLineEdit>
const Qt::CursorShape KristallTextBrowser::NORMAL_CURSOR = Qt::IBeamCursor;
KristallTextBrowser::KristallTextBrowser(QWidget *parent) :
QTextBrowser(parent)
{
connect(this, &QTextBrowser::anchorClicked, this, &KristallTextBrowser::on_anchorClicked);
// Enable touch scrolling
if (QTouchDevice::devices().length() > 0)
{
this->viewport()->setAttribute(Qt::WA_AcceptTouchEvents);
QScroller::grabGesture(this, QScroller::LeftMouseButtonGesture);
}
}
void KristallTextBrowser::mouseReleaseEvent(QMouseEvent *event)
{
if(event->button() == Qt::MiddleButton) {
// Fake a middle-click event here
QMouseEvent fake_event {
event->type(),
event->localPos(),
Qt::LeftButton,
event->buttons(),
event->modifiers()
};
this->signal_new_tab = true;
QTextBrowser::mouseReleaseEvent(&fake_event);
} else {
this->signal_new_tab = event->modifiers().testFlag(Qt::ControlModifier);
QTextBrowser::mouseReleaseEvent(event);
}
}
void KristallTextBrowser::on_anchorClicked(const QUrl &url)
{
emit this->anchorClicked(url, this->signal_new_tab);
}
void KristallTextBrowser::mouseMoveEvent(QMouseEvent *event)
{
QTextBrowser::mouseMoveEvent(event);
this->updateCursor();
}
void KristallTextBrowser::setDefaultCursor(const QCursor &cur)
{
this->wanted_cursor = cur;
this->updateCursor();
}
void KristallTextBrowser::focusInEvent(QFocusEvent *event)
{
QTextBrowser::focusInEvent(event);
this->updateCursor();
}
void KristallTextBrowser::updateCursor()
{
// This slight hack allows us to set the "default" cursor,
// (i.e when not hovering over links) We need to do this
// because QTextBrowser for some reason resets viewport cursor
// to ArrowCursor after we hover over links
const QCursor& cur = this->viewport()->cursor();
if (cur.shape() != this->wanted_cursor.shape() &&
cur.shape() != Qt::PointingHandCursor)
{
this->viewport()->setCursor(wanted_cursor);
}
}
void KristallTextBrowser::keyPressEvent(QKeyEvent *event)
{
if(event->modifiers() == Qt::ControlModifier &&
event->key() == Qt::Key_C) {
this->betterCopy();
} else {
QTextBrowser::keyPressEvent(event);
}
}
void KristallTextBrowser::keyReleaseEvent(QKeyEvent *event)
{
if(event->modifiers() == Qt::ControlModifier &&
event->key() == Qt::Key_C) {
// Eat the event
} else {
QTextBrowser::keyReleaseEvent(event);
}
}
void KristallTextBrowser::betterCopy()
{
// Our own implementation of a copy. All we need to do is get the
// selected text, adjust it if needed, and copy it.
//
// The main adjustment we make here is stripping "fancy" quotes from the text,
// as these quotes are usually an annoyance when copying text.
//
// There is a little trick here though: if a user selects a piece of text
// which consists only of whitespace and fancy quotes
// the fancy quotes will be included in the copy.
//
// In all other cases the quotes will be replaced. This can be said to be
// a usability feature for the few people that may want to actually copy
// the quotes themselves.
QTextCursor cursor = QTextBrowser::textCursor();
QString text = cursor.selectedText();
if (text.isEmpty()) return;
// Check if text only consists of fancy quotes:
static const QRegularExpression REGEX_ONLY_QUOTES(R"(^[\s“”‘’]+$)",
QRegularExpression::CaseInsensitiveOption);
if (text.contains(REGEX_ONLY_QUOTES))
{
// Copy the original text.
kristall::clipboard->setText(text);
return;
}
// Replace fancy quotes
static const QRegularExpression REGEX_QUOTES_D("(“|”)"), REGEX_QUOTES_S("(‘|’)");
text.replace(REGEX_QUOTES_D, "\"").replace(REGEX_QUOTES_S, "'");
kristall::clipboard->setText(text);
}
|
