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
|
/* This file is part of the KDE libraries
Copyright (C) 2000 Ronny Standtke <Ronny.Standtke@gmx.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "ksqueezedtextlabel.h"
#include <qtooltip.h>
KSqueezedTextLabel::KSqueezedTextLabel( const QString &text , QWidget *parent, const char *name )
: QLabel ( parent, name ) {
setSizePolicy(QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed ));
fullText = text;
squeezeTextToLabel();
}
KSqueezedTextLabel::KSqueezedTextLabel( QWidget *parent, const char *name )
: QLabel ( parent, name ) {
setSizePolicy(QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed ));
}
void KSqueezedTextLabel::resizeEvent( QResizeEvent * ) {
squeezeTextToLabel();
}
QSize KSqueezedTextLabel::minimumSizeHint() const
{
QSize sh = QLabel::minimumSizeHint();
sh.setWidth(-1);
return sh;
}
void KSqueezedTextLabel::setText( const QString &text ) {
fullText = text;
squeezeTextToLabel();
}
void KSqueezedTextLabel::squeezeTextToLabel() {
QFontMetrics fm(fontMetrics());
int labelWidth = size().width();
int textWidth = fm.width(fullText);
if (textWidth > labelWidth) {
// start with the dots only
QString squeezedText = "...";
int squeezedWidth = fm.width(squeezedText);
// estimate how many letters we can add to the dots on both sides
int letters = fullText.length() * (labelWidth - squeezedWidth) / textWidth / 2;
if (labelWidth < squeezedWidth) letters=1;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
if (squeezedWidth < labelWidth) {
// we estimated too short
// add letters while text < label
do {
letters++;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
} while (squeezedWidth < labelWidth);
letters--;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
} else if (squeezedWidth > labelWidth) {
// we estimated too long
// remove letters while text > label
do {
letters--;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
} while (letters && squeezedWidth > labelWidth);
}
if (letters < 5) {
// too few letters added -> we give up squeezing
QLabel::setText(fullText);
} else {
QLabel::setText(squeezedText);
}
//US QToolTip::remove( this );
//US QToolTip::add( this, fullText );
} else {
QLabel::setText(fullText);
//US QToolTip::remove( this );
//US QToolTip::hide();
};
}
void KSqueezedTextLabel::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
//US #include "ksqueezedtextlabel.moc"
|
