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/* ============================================================
* Author: Tom Albers <[email protected]>
* Date : 2005-01-01
* Description :
*
* Copyright 2005 by Tom Albers
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* ============================================================ */
/** @file squeezedcombobox.cpp */
// TQt includes.
#include <tqlistbox.h>
#include <tqcombobox.h>
#include <tqpair.h>
#include <tqtimer.h>
#include <tqvaluelist.h>
#include <tqstyle.h>
#include <tqapplication.h>
#include <tqtooltip.h>
// Local includes.
#include "squeezedcombobox.h"
SqueezedComboBoxTip::SqueezedComboBoxTip( TQWidget * parent, SqueezedComboBox* name )
: TQToolTip( parent )
{
m_originalWidget = name;
}
void SqueezedComboBoxTip::maybeTip( const TQPoint &pos )
{
TQListBox* listBox = m_originalWidget->listBox();
if (!listBox)
return;
TQListBoxItem* selectedItem = listBox->itemAt( pos );
if (selectedItem)
{
TQRect positionToolTip = listBox->itemRect( selectedItem );
TQString toolTipText = m_originalWidget->itemHighlighted();
if (!toolTipText.isNull())
tip(positionToolTip, toolTipText);
}
}
SqueezedComboBox::SqueezedComboBox( TQWidget *parent, const char *name )
: TQComboBox( parent, name )
{
setMinimumWidth(100);
m_timer = new TQTimer(this);
m_tooltip = new SqueezedComboBoxTip( listBox()->viewport(), this );
connect(m_timer, TQT_SIGNAL(timeout()),
TQT_SLOT(slotTimeOut()));
connect(this, TQT_SIGNAL(activated( int )),
TQT_SLOT(slotUpdateToolTip( int )));
}
SqueezedComboBox::~SqueezedComboBox()
{
delete m_tooltip;
delete m_timer;
}
bool SqueezedComboBox::contains( const TQString& _text ) const
{
if ( _text.isEmpty() )
return false;
const int itemCount = count();
for (int i = 0; i < itemCount; ++i )
{
if ( text(i) == _text )
return true;
}
return false;
}
TQSize SqueezedComboBox::sizeHint() const
{
constPolish();
TQFontMetrics fm = fontMetrics();
int maxW = count() ? 18 : 7 * fm.width(TQChar('x')) + 18;
int maxH = TQMAX( fm.lineSpacing(), 14 ) + 2;
return style().sizeFromContents(TQStyle::CT_ComboBox, this,
TQSize(maxW, maxH)).
expandedTo(TQApplication::globalStrut());
}
void SqueezedComboBox::insertSqueezedItem(const TQString& newItem, int index)
{
m_originalItems[index] = newItem;
insertItem( squeezeText(newItem), index );
// if this is the first item, set the tooltip.
if (index == 0)
slotUpdateToolTip(0);
}
void SqueezedComboBox::resizeEvent ( TQResizeEvent * )
{
m_timer->start(200, true);
}
void SqueezedComboBox::slotTimeOut()
{
TQMapIterator<int,TQString> it;
for (it = m_originalItems.begin() ; it != m_originalItems.end();
++it)
{
changeItem( squeezeText( it.data() ), it.key() );
}
}
TQString SqueezedComboBox::squeezeText( const TQString& original)
{
// not the complete widgetSize is usable. Need to compensate for that.
int widgetSize = width()-30;
TQFontMetrics fm( fontMetrics() );
// If we can fit the full text, return that.
if (fm.width(original) < widgetSize)
return(original);
// We need to squeeze.
TQString sqItem = original; // prevent empty return value;
widgetSize = widgetSize-fm.width("...");
for (uint i = 0 ; i != original.length(); ++i)
{
if ( (int)fm.width(original.right(i)) > widgetSize)
{
sqItem = TQString("..." + original.right(--i));
break;
}
}
return sqItem;
}
void SqueezedComboBox::slotUpdateToolTip( int index )
{
TQToolTip::remove(this);
TQToolTip::add(this, m_originalItems[index]);
}
TQString SqueezedComboBox::itemHighlighted()
{
int curItem = this->listBox()->currentItem();
return m_originalItems[curItem];
}
#include "squeezedcombobox.moc"
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