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test better layout calcuation
test better layout calcuation

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charttitle.cpp
94 lines | 2.2 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "charttitle_p.h"
#include <QFont>
#include <QFontMetrics>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ChartTitle::ChartTitle(QGraphicsItem *parent)
: QGraphicsSimpleTextItem(parent)
{
}
ChartTitle::~ChartTitle()
{
}
void ChartTitle::setText(const QString &text)
{
m_text = text;
}
QString ChartTitle::text() const
{
return m_text;
}
void ChartTitle::setGeometry(const QRectF &rect)
{
QFontMetrics fn(font());
int width = rect.width();
if (fn.boundingRect(m_text).width() > width) {
QString string = m_text + "...";
while (fn.boundingRect(string).width() > width && string.length() > 3)
string.remove(string.length() - 4, 1);
QGraphicsSimpleTextItem::setText(string);
} else {
QGraphicsSimpleTextItem::setText(m_text);
}
setPos(rect.topLeft());
}
QSizeF ChartTitle::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(constraint);
QFontMetrics fn(font());
QSizeF sh;
switch (which) {
case Qt::MinimumSize:
sh = QSizeF(fn.boundingRect("...").width(), fn.height());
break;
case Qt::PreferredSize:
sh = fn.boundingRect(m_text).size();
break;
case Qt::MaximumSize:
sh = fn.boundingRect(m_text).size();
break;
case Qt::MinimumDescent:
sh = QSizeF(0, fn.descent());
break;
default:
break;
}
return sh;
}
QTCOMMERCIALCHART_END_NAMESPACE