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/*
* dynamicedit.cpp
*
* (c) 2003,2008-2010 by Jeremy Bowman <jmbowman@alum.mit.edu>
*
* 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.
*/
/** @file dynamicedit.cpp
* Source file for DynamicEdit
*/
#include <QApplication>
#include <QFontMetrics>
#include "dynamicedit.h"
/**
* Constructor.
*
* @param parent This widget's parent widget, if any
*/
DynamicEdit::DynamicEdit(QWidget *parent)
: QTextEdit(parent), sampleDoc(0)
{
sampleDoc = new QTextDocument("Ag", this);
setTabChangesFocus(true);
setFixedHeight(sizeHint().height());
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
connect(this, SIGNAL(textChanged()), this, SLOT(adjustHeight()));
setAcceptRichText(false);
setLineWrapMode(QTextEdit::NoWrap);
setWordWrapMode(QTextOption::NoWrap);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
}
/**
* Determine the preferred size of this widget based on its current text
* content.
*
* @return The current preferred size
*/
QSize DynamicEdit::sizeHint() const
{
QString content = toPlainText();
QTextDocument *doc = document();
int height;
if (content.isEmpty()) {
doc = sampleDoc;
}
qreal rheight = doc->size().rheight();
height = qRound(rheight);
// Want to round up, not down
if (rheight > height) {
height++;
}
#if defined(Q_WS_MAEMO_5)
// on this platform, need to manually add room for the padding, etc.
height += 30;
#endif
return QSize(100, height);
}
/**
* Recalculate the height required to contain all the lines of text entered
* so far. Called whenever the content of the text field changes.
*/
void DynamicEdit::adjustHeight()
{
setFixedHeight(sizeHint().height());
updateGeometry();
}
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