ksqueezedtextlabel.cpp
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00019 #include "ksqueezedtextlabel.h"
00020 #include <qtooltip.h>
00021
00022 KSqueezedTextLabel::KSqueezedTextLabel( const QString &text , QWidget *parent, const char *name )
00023 : QLabel ( parent, name ) {
00024 setSizePolicy(QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed ));
00025 fullText = text;
00026 squeezeTextToLabel();
00027 }
00028
00029 KSqueezedTextLabel::KSqueezedTextLabel( QWidget *parent, const char *name )
00030 : QLabel ( parent, name ) {
00031 setSizePolicy(QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Fixed ));
00032 }
00033
00034 void KSqueezedTextLabel::resizeEvent( QResizeEvent * ) {
00035 squeezeTextToLabel();
00036 }
00037
00038 QSize KSqueezedTextLabel::minimumSizeHint() const
00039 {
00040 QSize sh = QLabel::minimumSizeHint();
00041 sh.setWidth(-1);
00042 return sh;
00043 }
00044
00045 void KSqueezedTextLabel::setText( const QString &text ) {
00046 fullText = text;
00047 squeezeTextToLabel();
00048 }
00049
00050 void KSqueezedTextLabel::squeezeTextToLabel() {
00051 QFontMetrics fm(fontMetrics());
00052 int labelWidth = size().width();
00053 int textWidth = fm.width(fullText);
00054 if (textWidth > labelWidth) {
00055
00056 QString squeezedText = "...";
00057 int squeezedWidth = fm.width(squeezedText);
00058
00059
00060 int letters = fullText.length() * (labelWidth - squeezedWidth) / textWidth / 2;
00061 if (labelWidth < squeezedWidth) letters=1;
00062 squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
00063 squeezedWidth = fm.width(squeezedText);
00064
00065 if (squeezedWidth < labelWidth) {
00066
00067
00068 do {
00069 letters++;
00070 squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
00071 squeezedWidth = fm.width(squeezedText);
00072 } while (squeezedWidth < labelWidth);
00073 letters--;
00074 squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
00075 } else if (squeezedWidth > labelWidth) {
00076
00077
00078 do {
00079 letters--;
00080 squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
00081 squeezedWidth = fm.width(squeezedText);
00082 } while (letters && squeezedWidth > labelWidth);
00083 }
00084
00085 if (letters < 5) {
00086
00087 QLabel::setText(fullText);
00088 } else {
00089 QLabel::setText(squeezedText);
00090 }
00091
00092 QToolTip::remove( this );
00093 QToolTip::add( this, fullText );
00094
00095 } else {
00096 QLabel::setText(fullText);
00097
00098 QToolTip::remove( this );
00099 QToolTip::hide();
00100
00101 };
00102 }
00103
00104 void KSqueezedTextLabel::virtual_hook( int, void* )
00105 { }
00106
00107 #include "ksqueezedtextlabel.moc"
This file is part of the documentation for kdelibs Version 3.1.0.