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/* This file is part of the KDE project
* Copyright (C) 2006-2009 Thomas Zander <zander@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "KoVariable.h"
#include "KoInlineObject_p.h"
#include <KoShape.h>
#include <QPainter>
#include <QFontMetricsF>
#include <QTextDocument>
#include <QTextInlineObject>
#include "TextDebug.h"
class KoVariablePrivate : public KoInlineObjectPrivate
{
public:
KoVariablePrivate()
: modified(true),
document(0),
lastPositionInDocument(-1)
{
}
QDebug printDebug(QDebug dbg) const override
{
dbg.nospace() << "KoVariable value=" << value;
return dbg.space();
}
QString value;
bool modified;
const QTextDocument *document;
int lastPositionInDocument;
};
KoVariable::KoVariable(bool propertyChangeListener)
: KoInlineObject(*(new KoVariablePrivate()), propertyChangeListener)
{
}
KoVariable::~KoVariable()
{
}
void KoVariable::setValue(const QString &value)
{
Q_D(KoVariable);
if (d->value == value)
return;
d->value = value;
d->modified = true;
if (d->document) {
const_cast<QTextDocument *>(d->document)->markContentsDirty(d->lastPositionInDocument, 0);
}
}
void KoVariable::updatePosition(const QTextDocument *document, int posInDocument, const QTextCharFormat & format)
{
Q_D(KoVariable);
if (d->document) {
disconnect(d->document, SIGNAL(destroyed()), this, SLOT(documentDestroyed()));
}
d->document = document;
connect(d->document, SIGNAL(destroyed()), this, SLOT(documentDestroyed()));
d->lastPositionInDocument = posInDocument;
Q_UNUSED(format);
// Variables are always 'in place' so the position is 100% defined by the text layout.
variableMoved(d->document, posInDocument);
}
void KoVariable::resize(const QTextDocument *document, QTextInlineObject &object, int posInDocument, const QTextCharFormat &format, QPaintDevice *pd)
{
Q_D(KoVariable);
Q_UNUSED(document);
Q_UNUSED(posInDocument);
if (d->modified == false)
return;
if (object.isValid() == false)
return;
d->modified = true;
Q_ASSERT(format.isCharFormat());
QFontMetricsF fm(format.font(), pd);
qreal width = qMax(qreal(0.0), fm.width(d->value));
qreal ascent = fm.ascent();
qreal descent = fm.descent();
if (object.width() != width) {
object.setWidth(width);
}
if (object.ascent() != ascent) {
object.setAscent(ascent);
}
if (object.descent() != descent) {
object.setDescent(descent);
}
}
void KoVariable::paint(QPainter &painter, QPaintDevice *pd, const QTextDocument *document, const QRectF &rect, const QTextInlineObject &object, int posInDocument, const QTextCharFormat &format)
{
Q_D(KoVariable);
Q_UNUSED(document);
Q_UNUSED(posInDocument);
// TODO set all the font properties from the format (color etc)
QFont font(format.font(), pd);
QTextLayout layout(d->value, font, pd);
layout.setCacheEnabled(true);
QList<QTextLayout::FormatRange> layouts;
QTextLayout::FormatRange range;
range.start = 0;
range.length = d->value.length();
range.format = format;
layouts.append(range);
layout.setAdditionalFormats(layouts);
QTextOption option(Qt::AlignLeft | Qt::AlignAbsolute);
if (object.isValid()) {
option.setTextDirection(object.textDirection());
}
layout.setTextOption(option);
layout.beginLayout();
layout.createLine();
layout.endLayout();
layout.draw(&painter, rect.topLeft());
}
void KoVariable::variableMoved(const QTextDocument *document, int posInDocument)
{
Q_UNUSED(document);
Q_UNUSED(posInDocument);
}
QString KoVariable::value() const
{
Q_D(const KoVariable);
return d->value;
}
int KoVariable::positionInDocument() const
{
Q_D(const KoVariable);
return d->lastPositionInDocument;
}
void KoVariable::documentDestroyed()
{
// deleteLater(); does not work when closing a document as the inline object manager is deleted before the control is given back to the event loop
// therefore commit suicide.
// See http://www.parashift.com/c++-faq-lite/delete-this.html
delete(this);
}
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