|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "chartvalueaxisx_p.h"
|
|
|
#include "qabstractaxis.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "qvalueaxis.h"
|
|
|
#include "chartlayout_p.h"
|
|
|
#include <QGraphicsLayout>
|
|
|
#include <QFontMetrics>
|
|
|
#include <qmath.h>
|
|
|
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartValueAxisX::ChartValueAxisX(QValueAxis *axis,ChartPresenter *presenter) : HorizontalAxis(axis,presenter),
|
|
|
m_tickCount(0),m_axis(axis)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
ChartValueAxisX::~ChartValueAxisX()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartValueAxisX::calculateLayout() const
|
|
|
{
|
|
|
Q_ASSERT(m_tickCount>=2);
|
|
|
|
|
|
QVector<qreal> points;
|
|
|
points.resize(m_tickCount);
|
|
|
|
|
|
const QRectF& gridRect = gridGeometry();
|
|
|
const qreal deltaX = gridRect.width()/(m_tickCount-1);
|
|
|
for (int i = 0; i < m_tickCount; ++i) {
|
|
|
int x = i * deltaX + gridRect.left();
|
|
|
points[i] = x;
|
|
|
}
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisX::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal>& layout = ChartAxis::layout();
|
|
|
if(layout.isEmpty()) return;
|
|
|
setLabels(createValueLabels(layout.size()));
|
|
|
HorizontalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
void ChartValueAxisX::handleAxisUpdated()
|
|
|
{
|
|
|
if (m_tickCount != m_axis->tickCount()) {
|
|
|
m_tickCount = m_axis->tickCount();
|
|
|
presenter()->layout()->invalidate();
|
|
|
}
|
|
|
|
|
|
ChartAxis::handleAxisUpdated();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartValueAxisX::sizeHint(Qt::SizeHint which, const QSizeF& constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QFontMetrics fn(font());
|
|
|
QSizeF sh;
|
|
|
|
|
|
QSizeF base = ChartAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = createValueLabels(m_tickCount);
|
|
|
qreal width=0;
|
|
|
qreal height=0;
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize:{
|
|
|
int count = qMax(ticksList.last().count(),ticksList.first().count());
|
|
|
width=fn.averageCharWidth()*count;
|
|
|
height=fn.height()+labelPadding();
|
|
|
width=qMax(width,base.width());
|
|
|
height+=base.height();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
case Qt::PreferredSize:{
|
|
|
for (int i = 0; i < ticksList.size(); ++i)
|
|
|
{
|
|
|
width+=fn.averageCharWidth()*ticksList.at(i).count();
|
|
|
}
|
|
|
height=fn.height()+labelPadding();
|
|
|
width=qMax(width,base.width());
|
|
|
height+=base.height();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
