tdebase/kcontrol/arts/krichtextlabel.cpp

/* This file is part of the KDE libraries
   Copyright (C) 2005 Waldo Bastian <bastian@kde.org>

   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., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "krichtextlabel.h"

#include <tqtooltip.h>
#include <tqstylesheet.h>
#include <tqsimplerichtext.h>

#include <kglobalsettings.h>

static TQString qrichtextify( const TQString& text )
{
  if ( text.isEmpty() || text[0] == '<' )
    return text;

  TQStringList lines = TQStringList::split('\n', text);
  for(TQStringList::Iterator it = lines.begin(); it != lines.end(); ++it)
  {
    *it = TQStyleSheet::convertFromPlainText( *it, TQStyleSheetItem::WhiteSpaceNormal );
  }

  return lines.join(TQString::null);
}

KRichTextLabel::KRichTextLabel( const TQString &text , TQWidget *parent, const char *name )
 : TQLabel ( parent, name ) {
  m_defaultWidth = TQMIN(500, KGlobalSettings::desktopGeometry(this).width()*3/5);
  setAlignment( TQt::WordBreak );
  setText(text);
}

KRichTextLabel::KRichTextLabel( TQWidget *parent, const char *name )
 : TQLabel ( parent, name ) {
  m_defaultWidth = TQMIN(500, KGlobalSettings::desktopGeometry(this).width()*3/5);
  setAlignment( TQt::WordBreak );
}

void KRichTextLabel::setDefaultWidth(int defaultWidth)
{
  m_defaultWidth = defaultWidth;
  updateGeometry();
}

TQSizePolicy KRichTextLabel::sizePolicy() const
{
  return TQSizePolicy(TQSizePolicy::MinimumExpanding, TQSizePolicy::Minimum, false);
}

TQSize KRichTextLabel::minimumSizeHint() const
{
  TQString qt_text = qrichtextify( text() );
  int pref_width = 0;
  int pref_height = 0;
  TQSimpleRichText rt(qt_text, font());
  pref_width = m_defaultWidth;
  rt.setWidth(pref_width);
  int used_width = rt.widthUsed();
  if (used_width <= pref_width)
  {
    while(true)
    {
      int new_width = (used_width * 9) / 10;
      rt.setWidth(new_width);
      int new_height = rt.height();
      if (new_height > pref_height)
        break;
      used_width = rt.widthUsed();
      if (used_width > new_width)
        break;
    }
    pref_width = used_width;
  }
  else
  {
    if (used_width > (pref_width *2))
      pref_width = pref_width *2;
    else
      pref_width = used_width;
  }

  return TQSize(pref_width, rt.height());
}

TQSize KRichTextLabel::sizeHint() const
{
  return minimumSizeHint();
}

void KRichTextLabel::setText( const TQString &text ) {
  if (!text.startsWith("<qt>"))
     TQLabel::setText("<qt>"+text+"</qt>");
  else
     TQLabel::setText(text);
}

void KRichTextLabel::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }

#include "krichtextlabel.moc"