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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>
Miikka Heikkinen - - Load All Authors

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r2539:74f3dbde7a75
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polarchartlayout.cpp
82 lines | 2.7 KiB | text/x-c | CppLexer
/ src / layout / polarchartlayout.cpp
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Miikka Heikkinen
Add Polar chart support...
 r2483 /****************************************************************************
**
** 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 "polarchartlayout_p.h"
#include "chartpresenter_p.h"
#include "polarchartaxis_p.h"
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
static const qreal golden_ratio = 0.4;
PolarChartLayout::PolarChartLayout(ChartPresenter *presenter)
: AbstractChartLayout(presenter)
{
}
PolarChartLayout::~PolarChartLayout()
{
}
QRectF PolarChartLayout::calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxisElement *> &axes) const
{
// How to handle multiple angular/radial axes?
qreal axisRadius = geometry.height() / 2.0;
if (geometry.width() < geometry.height())
axisRadius = geometry.width() / 2.0;
int titleHeight = 0;
foreach (ChartAxisElement *chartAxis, axes) {
if (!chartAxis->isVisible())
continue;
PolarChartAxis *polarChartAxis = static_cast<PolarChartAxis *>(chartAxis);
qreal radius = polarChartAxis->preferredAxisRadius(geometry.size());
if (radius < axisRadius)
axisRadius = radius;
if (chartAxis->axis()->orientation() == Qt::Horizontal
&& chartAxis->axis()->isTitleVisible()
&& !chartAxis->axis()->titleText().isEmpty()) {
// If axis has angular title, adjust geometry down by the space title takes
Miikka Heikkinen
Added HTML support for various text items...
 r2539 QRectF dummyRect = ChartPresenter::textBoundingRect(chartAxis->axis()->titleFont(), chartAxis->axis()->titleText());
Miikka Heikkinen
Fix multi-line axis titles....
 r2530 titleHeight = (dummyRect.height() / 2.0) + chartAxis->titlePadding();
Miikka Heikkinen
Add Polar chart support...
 r2483 }
}
QRectF axisRect;
axisRect.setSize(QSizeF(axisRadius * 2.0, axisRadius * 2.0));
axisRect.moveCenter(geometry.center());
axisRect.adjust(0, titleHeight, 0, titleHeight);
foreach (ChartAxisElement *chartAxis, axes)
chartAxis->setGeometry(axisRect, QRectF());
return axisRect;
}
QRectF PolarChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *> &axes) const
{
Q_UNUSED(axes);
return minimum;
}
QTCOMMERCIALCHART_END_NAMESPACE