Diffstat (limited to 'microkde/kdeui/ksqueezedtextlabel.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | microkde/kdeui/ksqueezedtextlabel.cpp | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/microkde/kdeui/ksqueezedtextlabel.cpp b/microkde/kdeui/ksqueezedtextlabel.cpp new file mode 100644 index 0000000..37fa29a --- a/dev/null +++ b/microkde/kdeui/ksqueezedtextlabel.cpp @@ -0,0 +1,107 @@ +/* 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" |