|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "chartvalueaxisy_p.h"
|
|
|
#include "qabstractaxis.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "qvalueaxis.h"
|
|
|
#include "chartlayout_p.h"
|
|
|
#include <QGraphicsLayout>
|
|
|
#include <QFontMetrics>
|
|
|
#include <qmath.h>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartValueAxisY::ChartValueAxisY(QValueAxis *axis, QGraphicsItem* item)
|
|
|
: VerticalAxis(axis, item),
|
|
|
m_axis(axis)
|
|
|
{
|
|
|
QObject::connect(m_axis,SIGNAL(tickCountChanged(int)),this, SLOT(handleTickCountChanged(int)));
|
|
|
QObject::connect(m_axis,SIGNAL(labelFormatChanged(QString)),this, SLOT(handleLabelFormatChanged(QString)));
|
|
|
}
|
|
|
|
|
|
ChartValueAxisY::~ChartValueAxisY()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartValueAxisY::calculateLayout() const
|
|
|
{
|
|
|
int tickCount = m_axis->tickCount();
|
|
|
|
|
|
Q_ASSERT(tickCount >= 2);
|
|
|
|
|
|
QVector<qreal> points;
|
|
|
points.resize(tickCount);
|
|
|
|
|
|
const QRectF &gridRect = gridGeometry();
|
|
|
|
|
|
const qreal deltaY = gridRect.height() / (tickCount - 1);
|
|
|
for (int i = 0; i < tickCount; ++i) {
|
|
|
points[i] = i * -deltaY + gridRect.bottom();
|
|
|
}
|
|
|
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisY::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal> &layout = ChartAxis::layout();
|
|
|
if (layout.isEmpty())
|
|
|
return;
|
|
|
setLabels(createValueLabels(min(),max(),layout.size(),m_axis->labelFormat()));
|
|
|
VerticalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisY::handleTickCountChanged(int tick)
|
|
|
{
|
|
|
Q_UNUSED(tick);
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
if(presenter()) presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisY::handleLabelFormatChanged(const QString &format)
|
|
|
{
|
|
|
Q_UNUSED(format);
|
|
|
QGraphicsLayoutItem::updateGeometry();
|
|
|
if(presenter()) presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartValueAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QFontMetrics fn(font());
|
|
|
QSizeF sh;
|
|
|
QSizeF base = VerticalAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = createValueLabels(min(),max(),m_axis->tickCount(),m_axis->labelFormat());
|
|
|
qreal width = 0;
|
|
|
qreal height = 0;
|
|
|
|
|
|
int labelWidth = 0;
|
|
|
|
|
|
foreach(const QString& s, ticksList)
|
|
|
{
|
|
|
labelWidth=qMax(fn.width(s),labelWidth);
|
|
|
}
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize: {
|
|
|
width = fn.boundingRect("...").width() + labelPadding();
|
|
|
width += base.width();
|
|
|
height = fn.height();
|
|
|
height = qMax(height,base.height());
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize:
|
|
|
{
|
|
|
width = labelWidth + labelPadding() + 2; //two pixels of tolerance
|
|
|
width += base.width();
|
|
|
height = fn.height() * ticksList.count();
|
|
|
height = qMax(height,base.height());
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
#include "moc_chartvalueaxisy_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
