|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "chartbarcategoryaxisy_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "qbarcategoryaxis_p.h"
|
|
|
#include <qmath.h>
|
|
|
#include <QFontMetrics>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartBarCategoryAxisY::ChartBarCategoryAxisY(QBarCategoryAxis *axis, ChartPresenter *presenter)
|
|
|
: VerticalAxis(axis, presenter, true),
|
|
|
m_categoriesAxis(axis)
|
|
|
{
|
|
|
}
|
|
|
|
|
|
ChartBarCategoryAxisY::~ChartBarCategoryAxisY()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartBarCategoryAxisY::calculateLayout() const
|
|
|
{
|
|
|
QVector<qreal> points;
|
|
|
const QRectF& gridRect = gridGeometry();
|
|
|
qreal range = max() - min();
|
|
|
const qreal delta = gridRect.height()/range;
|
|
|
|
|
|
if(delta<2) return points;
|
|
|
|
|
|
qreal offset = - min() - 0.5;
|
|
|
offset = int(offset * delta)%int(delta);
|
|
|
|
|
|
int count = qFloor(range);
|
|
|
if(count < 1 ) return points;
|
|
|
|
|
|
points.resize(count+2);
|
|
|
|
|
|
for (int i = 0; i < count+2; ++i) {
|
|
|
points[i] = gridRect.bottom() - i * delta -offset;
|
|
|
}
|
|
|
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
QStringList ChartBarCategoryAxisY::createCategoryLabels(const QVector<qreal>& layout) const
|
|
|
{
|
|
|
QStringList result;
|
|
|
const QRectF &gridRect = gridGeometry();
|
|
|
qreal d = (max() - min()) / gridRect.height();
|
|
|
|
|
|
for (int i = 0; i < layout.count() - 1; ++i) {
|
|
|
qreal x = qFloor(((gridRect.height() - (layout[i + 1] + layout[i]) / 2 + gridRect.top()) * d + min() + 0.5));
|
|
|
if ((x < m_categoriesAxis->categories().count()) && (x >= 0)) {
|
|
|
result << m_categoriesAxis->categories().at(x);
|
|
|
} else {
|
|
|
// No label for x coordinate
|
|
|
result << "";
|
|
|
}
|
|
|
}
|
|
|
result << "";
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
void ChartBarCategoryAxisY::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal>& layout = ChartAxis::layout();
|
|
|
if (layout.isEmpty())
|
|
|
return;
|
|
|
setLabels(createCategoryLabels(layout));
|
|
|
VerticalAxis::updateGeometry();
|
|
|
}
|
|
|
|
|
|
void ChartBarCategoryAxisY::handleAxisUpdated()
|
|
|
{
|
|
|
|
|
|
if (m_categoriesAxis->categories() != m_categories) {
|
|
|
m_categories = m_categoriesAxis->categories();
|
|
|
if (ChartAxis::layout().count() == m_categoriesAxis->d_ptr->count() + 2)
|
|
|
updateGeometry();
|
|
|
}
|
|
|
ChartAxis::handleAxisUpdated();
|
|
|
}
|
|
|
|
|
|
QSizeF ChartBarCategoryAxisY::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
|
|
|
{
|
|
|
Q_UNUSED(constraint)
|
|
|
|
|
|
QFontMetrics fn(font());
|
|
|
QSizeF sh;
|
|
|
QSizeF base = VerticalAxis::sizeHint(which, constraint);
|
|
|
QStringList ticksList = createCategoryLabels(ChartAxis::layout());
|
|
|
|
|
|
qreal width=0;
|
|
|
qreal height=0;
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize:
|
|
|
width = fn.boundingRect("...").width() + labelPadding();
|
|
|
height = fn.height();
|
|
|
width+=base.width();
|
|
|
height=qMax(height,base.height());
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
case Qt::PreferredSize:{
|
|
|
|
|
|
for (int i = 0; i < ticksList.size(); ++i)
|
|
|
{
|
|
|
QRectF rect = fn.boundingRect(ticksList.at(i));
|
|
|
height+=rect.height();
|
|
|
width=qMax(rect.width()+labelPadding() + 1 ,width); //one pixel torelance
|
|
|
}
|
|
|
height=qMax(height,base.height());
|
|
|
width+=base.width();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|