filesharing/simple/krichtextlabel.cpp

   1 /* This file is part of the KDE libraries
   2    Copyright (C) 2005 Waldo Bastian <bastian@kde.org>
   3
   4    This library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public
   6    License version 2 as published by the Free Software Foundation.
   7
   8    This library is distributed in the hope that it will be useful,
   9    but WITHOUT ANY WARRANTY; without even the implied warranty of
  10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11    Library General Public License for more details.
  12
  13    You should have received a copy of the GNU Library General Public License
  14    along with this library; see the file COPYING.LIB.  If not, write to
  15    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  16    Boston, MA 02110-1301, USA.
  17 */
  18
  19 #include "krichtextlabel.h"
  20
  21
  22 #include <q3stylesheet.h>
  23 #include <q3simplerichtext.h>
  24 #include <qtextdocument.h>
  25 //Added by qt3to4:
  26 #include <QLabel>
  27
  28 #include <kglobalsettings.h>
  29
  30 static QString qrichtextify( const QString& text )
  31 {
  32   if ( text.isEmpty() || text[0] == '<' )
  33     return text;
  34
  35   QStringList lines = QStringList::split('\n', text);
  36   for(QStringList::Iterator it = lines.begin(); it != lines.end(); ++it)
  37   {
  38     *it = Qt::convertFromPlainText( *it, Qt::WhiteSpaceNormal );
  39   }
  40
  41   return lines.join(QString::null);     //krazy:exclude=nullstrassign for old broken gcc
  42 }
  43
  44 KRichTextLabel::KRichTextLabel( const QString &text , QWidget *parent )
  45  : QLabel ( parent ) {
  46   m_defaultWidth = qMin(400, KGlobalSettings::desktopGeometry(this).width()*2/5);
  47   setWordWrap( true );
  48   setText(text);
  49 }
  50
  51 KRichTextLabel::KRichTextLabel( QWidget *parent )
  52  : QLabel ( parent ) {
  53   m_defaultWidth = qMin(400, KGlobalSettings::desktopGeometry(this).width()*2/5);
  54   setWordWrap( true );
  55 }
  56
  57 void KRichTextLabel::setDefaultWidth(int defaultWidth)
  58 {
  59   m_defaultWidth = defaultWidth;
  60   updateGeometry();
  61 }
  62
  63 QSizePolicy KRichTextLabel::sizePolicy() const
  64 {
  65   return QSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Minimum, false);
  66 }
  67
  68 QSize KRichTextLabel::minimumSizeHint() const
  69 {
  70   QString qt_text = qrichtextify( text() );
  71   int pref_width = 0;
  72   int pref_height = 0;
  73   Q3SimpleRichText rt(qt_text, font());
  74   pref_width = m_defaultWidth;
  75   rt.setWidth(pref_width);
  76   int used_width = rt.widthUsed();
  77   if (used_width <= pref_width)
  78   {
  79     while(true)
  80     {
  81       int new_width = (used_width * 9) / 10;
  82       rt.setWidth(new_width);
  83       int new_height = rt.height();
  84       if (new_height > pref_height)
  85         break;
  86       used_width = rt.widthUsed();
  87       if (used_width > new_width)
  88         break;
  89     }
  90     pref_width = used_width;
  91   }
  92   else
  93   {
  94     if (used_width > (pref_width *2))
  95       pref_width = pref_width *2;
  96     else
  97       pref_width = used_width;
  98   }
  99
 100   return QSize(pref_width, rt.height());
 101 }
 102
 103 QSize KRichTextLabel::sizeHint() const
 104 {
 105   return minimumSizeHint();
 106 }
 107
 108 void KRichTextLabel::setText( const QString &text ) {
 109   QLabel::setText(text);
 110 }
 111
 112 void KRichTextLabel::virtual_hook( int, void* )
 113 { /*BASE::virtual_hook( id, data );*/ }
 114
 115 #include "krichtextlabel.moc"