|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 <QGraphicsLayout>
|
|
|
#include <QFontMetrics>
|
|
|
#include <qmath.h>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartValueAxisY::ChartValueAxisY(QAbstractAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter),
|
|
|
m_tickCount(0)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
ChartValueAxisY::~ChartValueAxisY()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartValueAxisY::calculateLayout() const
|
|
|
{
|
|
|
Q_ASSERT(m_tickCount>=2);
|
|
|
|
|
|
QVector<qreal> points;
|
|
|
points.resize(m_tickCount);
|
|
|
|
|
|
const qreal deltaY = m_gridRect.height()/(m_tickCount-1);
|
|
|
for (int i = 0; i < m_tickCount; ++i) {
|
|
|
int y = i * -deltaY + m_gridRect.bottom();
|
|
|
points[i] = y;
|
|
|
}
|
|
|
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisY::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal> &layout = ChartAxis::layout();
|
|
|
|
|
|
if(layout.isEmpty()) return;
|
|
|
|
|
|
QStringList ticksList = createNumberLabels(m_min,m_max,layout.size());
|
|
|
|
|
|
QList<QGraphicsItem *> lines = m_grid->childItems();
|
|
|
QList<QGraphicsItem *> labels = m_labels->childItems();
|
|
|
QList<QGraphicsItem *> shades = m_shades->childItems();
|
|
|
QList<QGraphicsItem *> axis = m_arrow->childItems();
|
|
|
|
|
|
Q_ASSERT(labels.size() == ticksList.size());
|
|
|
Q_ASSERT(layout.size() == ticksList.size());
|
|
|
|
|
|
qreal height = m_axisRect.bottom();
|
|
|
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
|
|
|
//lineItem->setLine( m_gridRect.left() , m_gridRect.top(), m_gridRect.left(), m_gridRect.bottom());
|
|
|
|
|
|
if (m_chartAxis->alignment()==Qt::AlignLeft)
|
|
|
lineItem->setLine( m_axisRect.right() , m_gridRect.top(), m_axisRect.right(), m_gridRect.bottom());
|
|
|
else if(m_chartAxis->alignment()==Qt::AlignRight)
|
|
|
lineItem->setLine( m_axisRect.left() , m_gridRect.top(), m_axisRect.left(), m_gridRect.bottom());
|
|
|
|
|
|
QFontMetrics fn(m_font);
|
|
|
|
|
|
for (int i = 0; i < layout.size(); ++i) {
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
|
|
|
lineItem->setLine( m_gridRect.left() , layout[i], m_gridRect.right(), layout[i]);
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
|
|
|
|
|
|
QString text = ticksList.at(i);
|
|
|
|
|
|
if (fn.boundingRect(text).width() > m_axisRect.right() - m_axisRect.left() - labelPadding() )
|
|
|
{
|
|
|
QString label = text + "...";
|
|
|
while (fn.boundingRect(label).width() > m_axisRect.right() - m_axisRect.left() - labelPadding() && label.length() > 3)
|
|
|
label.remove(label.length() - 4, 1);
|
|
|
labelItem->setText(label);
|
|
|
}else{
|
|
|
labelItem->setText(text);
|
|
|
}
|
|
|
|
|
|
const QRectF& rect = labelItem->boundingRect();
|
|
|
|
|
|
QPointF center = rect.center();
|
|
|
labelItem->setTransformOriginPoint(center.x(), center.y());
|
|
|
//labelItem->setPos( m_gridRect.left() - rect.width() - labelPadding() , layout[i]-center.y());
|
|
|
|
|
|
if (m_chartAxis->alignment()==Qt::AlignLeft)
|
|
|
labelItem->setPos( m_axisRect.right() - rect.width() - labelPadding() , layout[i]-center.y());
|
|
|
else if(m_chartAxis->alignment()==Qt::AlignRight)
|
|
|
labelItem->setPos( m_axisRect.left() + labelPadding() , layout[i]-center.y());
|
|
|
|
|
|
if(labelItem->pos().y() + rect.height() > height ||
|
|
|
labelItem->pos().y() < m_axisRect.top()) {
|
|
|
labelItem->setVisible(false);
|
|
|
lineItem->setVisible(false);
|
|
|
}else{
|
|
|
labelItem->setVisible(true);
|
|
|
lineItem->setVisible(true);
|
|
|
height=labelItem->pos().y();
|
|
|
}
|
|
|
|
|
|
if ((i+1)%2 && i>1) {
|
|
|
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1));
|
|
|
rectItem->setRect( m_gridRect.left(),layout[i], m_gridRect.width(),layout[i-1]-layout[i]);
|
|
|
}
|
|
|
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
|
|
|
// lineItem->setLine( m_gridRect.left()-5,layout[i], m_gridRect.left(),layout[i]);
|
|
|
|
|
|
if (m_chartAxis->alignment()==Qt::AlignLeft)
|
|
|
lineItem->setLine( m_axisRect.right()- labelPadding(),layout[i], m_axisRect.right(),layout[i]);
|
|
|
else if(m_chartAxis->alignment()==Qt::AlignRight)
|
|
|
lineItem->setLine( m_axisRect.left(),layout[i], m_axisRect.left()+ labelPadding(),layout[i]);
|
|
|
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisY::handleAxisUpdated()
|
|
|
{
|
|
|
//TODO:: fix this
|
|
|
QValueAxis* axis = qobject_cast<QValueAxis*>(m_chartAxis);
|
|
|
m_tickCount = axis->tickCount();
|
|
|
ChartAxis::handleAxisUpdated();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartValueAxisY::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QFontMetrics fn(m_font);
|
|
|
QSizeF sh;
|
|
|
QSizeF base = ChartAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = createNumberLabels(m_min,m_max,m_tickCount);
|
|
|
qreal width=0;
|
|
|
qreal height=0;
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize: {
|
|
|
int count = qMax(ticksList.first().count() , ticksList.last().count());
|
|
|
width=fn.averageCharWidth()*count+labelPadding();
|
|
|
height=fn.height();
|
|
|
height=qMax(height,base.height());
|
|
|
width+=base.width();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize:
|
|
|
{
|
|
|
for (int i = 0; i < ticksList.size(); ++i)
|
|
|
{
|
|
|
width=qMax(qreal(fn.averageCharWidth()*ticksList.at(i).count())+labelPadding(),width);
|
|
|
height+=fn.height();
|
|
|
}
|
|
|
height=qMax(height,base.height());
|
|
|
width+=base.width();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
