##// END OF EJS Templates
Optimize string truncation algorithm...
Optimize string truncation algorithm Use binary search for truncating strings instead of linear search. Change-Id: I31cde493328e3192a53802aa65dea61975b9e87f Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>

File last commit:

r2539:74f3dbde7a75
r2541:563b21497627
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charttitle.cpp
86 lines | 2.1 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2013 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 "chartpresenter_p.h"
#include <QFont>
#include <QFontMetrics>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
ChartTitle::ChartTitle(QGraphicsItem *parent)
: QGraphicsTextItem(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)
{
QGraphicsTextItem::setHtml(ChartPresenter::truncatedText(font(), m_text, qreal(0.0), rect.width(), Qt::Horizontal, QRectF()));
setPos(rect.topLeft());
}
QSizeF ChartTitle::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
Q_UNUSED(constraint);
QSizeF sh;
switch (which) {
case Qt::MinimumSize: {
QRectF titleRect = ChartPresenter::textBoundingRect(font(), "...");
sh = QSizeF(titleRect.width(), titleRect.height());
break;
}
case Qt::PreferredSize:
case Qt::MaximumSize: {
QRectF titleRect = ChartPresenter::textBoundingRect(font(), m_text);
sh = QSizeF(titleRect.width(), titleRect.height());
break;
}
case Qt::MinimumDescent: {
QFontMetrics fn(font());
sh = QSizeF(0, fn.descent());
break;
}
default:
break;
}
return sh;
}
QTCOMMERCIALCHART_END_NAMESPACE