kactivelabel.cpp
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00020 #include "kactivelabel.h"
00021 
00022 #include <kapplication.h>
00023 #include <qregexp.h>
00024 #include <qwhatsthis.h>
00025 #include <qsimplerichtext.h>
00026 
00027 
00028 KActiveLabel::KActiveLabel(QWidget * parent, const char * name)
00029  : QTextBrowser(parent, name)
00030 {
00031    init();
00032 }
00033 
00034 KActiveLabel::KActiveLabel(const QString &text, QWidget * parent, const char * name)
00035  : QTextBrowser(parent, name)
00036 {
00037    init();
00038    setText(text);
00039 }
00040 
00041 void KActiveLabel::init()
00042 {
00043    setTextFormat(Qt::RichText);
00044    setVScrollBarMode(QScrollView::AlwaysOff);
00045    setHScrollBarMode(QScrollView::AlwaysOff);
00046    setFrameStyle(QFrame::NoFrame);
00047    paletteChanged();
00048    
00049    connect(this, SIGNAL(linkClicked(const QString &)), 
00050            this, SLOT(openLink(const QString &)));
00051    if (kapp)
00052    {
00053       connect(kapp, SIGNAL(kdisplayPaletteChanged()), 
00054               this, SLOT(paletteChanged()));
00055    }
00056 }
00057 
00058 void KActiveLabel::paletteChanged()
00059 {
00060    QPalette p = kapp ? kapp->palette() : palette();
00061    p.setBrush(QColorGroup::Base, p.brush(QPalette::Normal, QColorGroup::Background));
00062    p.setColor(QColorGroup::Text, p.color(QPalette::Normal, QColorGroup::Foreground));
00063    setPalette(p);
00064 }
00065 
00066 void KActiveLabel::openLink(const QString & link)
00067 {
00068    QRegExp whatsthis("whatsthis:/*([^/].*)");
00069    if (whatsthis.exactMatch(link)) {
00070       QWhatsThis::display(whatsthis.cap(1));
00071       return;
00072    }
00073 
00074    QStringList args;
00075    args << "exec" << link;
00076    kapp->kdeinitExec("kfmclient", args);
00077 }
00078 
00079 void KActiveLabel::virtual_hook( int, void* )
00080 {  }
00081 
00082 void KActiveLabel::focusInEvent( QFocusEvent* fe )
00083 {
00084    QTextBrowser::focusInEvent(fe);
00085    if(fe->reason() == QFocusEvent::Tab || fe->reason() == QFocusEvent::Backtab)
00086       selectAll(true);
00087 }
00088 
00089 void KActiveLabel::focusOutEvent( QFocusEvent* fe )
00090 {
00091    QTextBrowser::focusOutEvent(fe);
00092    if(fe->reason() == QFocusEvent::Tab || fe->reason() == QFocusEvent::Backtab)
00093       selectAll(false);
00094 }
00095 
00096 QSize KActiveLabel::minimumSizeHint() const
00097 {
00098    QSize ms = minimumSize();
00099    if ((ms.width() > 0) && (ms.height() > 0))
00100       return ms;
00101 
00102    int w = 400;
00103    if (ms.width() > 0)
00104       w = ms.width();
00105   
00106    QString txt = text();
00107    QSimpleRichText rt(txt, font());
00108    rt.setWidth(w - 2*frameWidth() - 10);
00109    w = 10 + rt.widthUsed() + 2*frameWidth();
00110    if (w < ms.width())
00111       w = ms.width();
00112    int h = rt.height() + 2*frameWidth();
00113    if ( h < ms.height())
00114       h = ms.height();
00115       
00116    return QSize(w, h);
00117 }
00118 
00119 QSize KActiveLabel::sizeHint() const
00120 {
00121    return minimumSizeHint();
00122 }
00123 
00124 #include "kactivelabel.moc"
 
This file is part of the documentation for kdeui Library Version 3.2.0.