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/*
*
* $Id: k3bstringutils.cpp 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2003 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* 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 of the License, or
* (at your option) any later version.
* See the file "COPYING" for the exact licensing terms.
*/
#include "k3bstringutils.h"
#include <tqfontmetrics.h>
#include <kdebug.h>
TQString K3b::cutToWidth( const TQFontMetrics& fm, const TQString& fullText, int cutWidth )
{
TQString squeezedText = "...";
int squeezedWidth = fm.width(squeezedText);
int textWidth = fm.width(fullText);
if( textWidth <= cutWidth ) {
return fullText;
}
if( fm.width(fullText.right(1) + "..." ) > cutWidth ) {
kdDebug() << "(K3b::cutToWidth) not able to cut text to " << cutWidth << "!" << endl;
return fullText.right(1) + "...";
}
// estimate how many letters we can add to the dots
int letters = fullText.length() * (cutWidth - squeezedWidth) / textWidth;
squeezedText = fullText.left(letters) + "...";
squeezedWidth = fm.width(squeezedText);
if (squeezedWidth < cutWidth) {
// we estimated too short
// add letters while text < label
do {
letters++;
squeezedText = fullText.left(letters) + "...";
squeezedWidth = fm.width(squeezedText);
} while (squeezedWidth < cutWidth);
letters--;
squeezedText = fullText.left(letters) + "...";
} else if (squeezedWidth > cutWidth) {
// we estimated too long
// remove letters while text > label
do {
letters--;
squeezedText = fullText.left(letters) + "...";
squeezedWidth = fm.width(squeezedText);
} while (squeezedWidth > cutWidth);
}
return squeezedText;
}
// from KSqueezedTextLabel
TQString K3b::squeezeTextToWidth( const TQFontMetrics& fm, const TQString& fullText, int cutWidth )
{
int textWidth = fm.width(fullText);
if (textWidth > cutWidth) {
// start with the dots only
TQString squeezedText = "...";
int squeezedWidth = fm.width(squeezedText);
// estimate how many letters we can add to the dots on both sides
int letters = fullText.length() * (cutWidth - squeezedWidth) / textWidth / 2;
if (cutWidth < squeezedWidth) letters=1;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
if (squeezedWidth < cutWidth) {
// we estimated too short
// add letters while text < label
do {
letters++;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
} while (squeezedWidth < cutWidth);
letters--;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
}
else if (squeezedWidth > cutWidth) {
// we estimated too long
// remove letters while text > label
do {
letters--;
squeezedText = fullText.left(letters) + "..." + fullText.right(letters);
squeezedWidth = fm.width(squeezedText);
} while (letters > 2 && squeezedWidth > cutWidth);
}
if (letters == 2)
kdDebug() << "(K3b::squeezeTextToWidth) WARNING: unable to squeeze text to width "
<< cutWidth << endl;
return squeezedText;
}
else
return fullText;
}
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