/*
Copyright (C) 2012, University of Cambridge, Department of Psychiatry.
Created by Rudolf Cardinal (rnc1001@cam.ac.uk).
This file is part of CamCOPS.
CamCOPS 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 3 of the License, or
(at your option) any later version.
CamCOPS 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.
You should have received a copy of the GNU General Public License
along with CamCOPS. If not, see <https://www.gnu.org/licenses/>.
*/
// See growingtextedit.cpp for notes
// This is to PlainTextEdit as GrowingTextEdit is to TextEdit.
#include "growingplaintextedit.h"
#include <QDebug>
#include <QFont>
#include <QFontMetrics>
GrowingPlainTextEdit::GrowingPlainTextEdit(QWidget* parent) :
QPlainTextEdit(parent),
m_auto_resize(true)
{
connect(
document(),
&QTextDocument::contentsChanged,
this,
&GrowingPlainTextEdit::contentsChanged
);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
}
GrowingPlainTextEdit::GrowingPlainTextEdit(
const QString& text,
QWidget* parent
) :
GrowingPlainTextEdit(parent) // delegating constructor
{
setPlainText(text);
}
GrowingPlainTextEdit::~GrowingPlainTextEdit()
{
}
void GrowingPlainTextEdit::setAutoResize(const bool auto_resize)
{
m_auto_resize = auto_resize;
}
QSize GrowingPlainTextEdit::sizeHint() const
{
ensurePolished();
QSize size_hint;
if (m_auto_resize) {
// https://stackoverflow.com/questions/9506586/qtextedit-resize-to-fit
// ... nope, not too good.
// 1. WRONG:
// size_hint = QPlainTextEdit::sizeHint();
// 2. WRONG:
size_hint = document()->size().toSize();
// 3. WRONG:
// const QTextDocument* doc = document();
// const QFont font = doc->defaultFont();
// const QFontMetrics fm(font);
// const QString text = doc->toPlainText() + "\n"; // or without "\n"
// size_hint = fm.size(0, text);
// 4. WRONG:
// ... as above but
// size_hint = fm.size(Qt::TextWordWrap, text);
// 5. CLOSE, BUT WRONG:
// const QTextDocument* doc = document();
// const QFont font = doc->defaultFont();
// const QFontMetrics fm(font);
// const QString text = doc->toPlainText();
// const QRect br = fm.boundingRect(
// QRect(0, 0, QWIDGETSIZE_MAX, QWIDGETSIZE_MAX),
// 0, // definitely not Qt::TextWordWrap
// text);
// size_hint = br.size();
} else {
size_hint = QPlainTextEdit::sizeHint();
}
qDebug() << Q_FUNC_INFO << size_hint;
return size_hint;
}
QSize GrowingPlainTextEdit::minimumSizeHint() const
{
QSize minsize = QPlainTextEdit::minimumSizeHint();
minsize.setHeight(sizeHint().height());
return minsize;
}
void GrowingPlainTextEdit::contentsChanged()
{
document()->setTextWidth(viewport()->width());
updateGeometry();
}