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