|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "chartbarcategoryaxisx_p.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "qbarcategoryaxis_p.h"
|
|
|
#include <QFontMetrics>
|
|
|
#include <QDebug>
|
|
|
#include <qmath.h>
|
|
|
|
|
|
static int label_padding = 5;
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
ChartBarCategoryAxisX::ChartBarCategoryAxisX(QBarCategoryAxis *axis,ChartPresenter *presenter) : ChartAxis(axis,presenter),
|
|
|
m_categoriesAxis(axis)
|
|
|
{
|
|
|
|
|
|
}
|
|
|
|
|
|
ChartBarCategoryAxisX::~ChartBarCategoryAxisX()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
QVector<qreal> ChartBarCategoryAxisX::calculateLayout() const
|
|
|
{
|
|
|
int count = m_categoriesAxis->d_ptr->count();
|
|
|
|
|
|
Q_ASSERT(count>=1);
|
|
|
|
|
|
QVector<qreal> points;
|
|
|
points.resize(count+2);
|
|
|
|
|
|
QRectF rect = presenter()->chartsGeometry();
|
|
|
|
|
|
const qreal delta = rect.width()/(count);
|
|
|
qreal offset =-m_min-0.5;
|
|
|
|
|
|
if(delta<1) return points;
|
|
|
|
|
|
if(offset<=0) {
|
|
|
offset = int(offset * rect.width()/(m_max - m_min))%int(delta) + delta;
|
|
|
}
|
|
|
else {
|
|
|
offset = int(offset * rect.width()/(m_max - m_min))%int(delta);
|
|
|
}
|
|
|
|
|
|
points[0] = rect.left();
|
|
|
points[count+1] = rect.right();
|
|
|
|
|
|
for (int i = 0; i < count; ++i) {
|
|
|
qreal x = offset + i * delta + rect.left();
|
|
|
points[i+1] = x;
|
|
|
}
|
|
|
return points;
|
|
|
}
|
|
|
|
|
|
QStringList ChartBarCategoryAxisX::createCategoryLabels(const QVector<qreal>& layout) const
|
|
|
{
|
|
|
QStringList result;
|
|
|
QRectF rect = presenter()->chartsGeometry();
|
|
|
qreal d = (m_max - m_min)/rect.width();
|
|
|
for (int i = 0;i < layout.count()-1; ++i) {
|
|
|
qreal x = qFloor((((layout[i+1] + layout[i])/2-rect.left())*d + m_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 ChartBarCategoryAxisX::updateGeometry()
|
|
|
{
|
|
|
const QVector<qreal>& layout = ChartAxis::layout();
|
|
|
|
|
|
if(layout.isEmpty()) return;
|
|
|
|
|
|
QStringList ticksList = createCategoryLabels(layout);
|
|
|
|
|
|
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());
|
|
|
|
|
|
QRectF chartRect = presenter()->chartsGeometry();
|
|
|
|
|
|
const qreal delta = chartRect.width()/(m_categoriesAxis->d_ptr->count());
|
|
|
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(axis.at(0));
|
|
|
lineItem->setLine( chartRect.left(), chartRect.bottom(), chartRect.right(), chartRect.bottom());
|
|
|
|
|
|
qreal width = chartRect.left();
|
|
|
for (int i = 0; i < layout.size(); ++i) {
|
|
|
QGraphicsLineItem *lineItem = static_cast<QGraphicsLineItem*>(lines.at(i));
|
|
|
lineItem->setLine(layout[i], chartRect.top(), layout[i], chartRect.bottom());
|
|
|
QGraphicsSimpleTextItem *labelItem = static_cast<QGraphicsSimpleTextItem*>(labels.at(i));
|
|
|
labelItem->setText(ticksList.at(i));
|
|
|
const QRectF& rect = labelItem->boundingRect();
|
|
|
QPointF center = rect.center();
|
|
|
labelItem->setTransformOriginPoint(center.x(), center.y());
|
|
|
|
|
|
if(i==0){
|
|
|
labelItem->setPos(layout[i+1] - (delta)/2 - center.x(), chartRect.bottom() + label_padding);
|
|
|
}else{
|
|
|
labelItem->setPos(layout[i] + (delta)/2 - center.x(), chartRect.bottom() + label_padding);
|
|
|
}
|
|
|
|
|
|
if(labelItem->pos().x()<=width || labelItem->pos().x()+ rect.width()> chartRect.right()) {
|
|
|
labelItem->setVisible(false);
|
|
|
}
|
|
|
else {
|
|
|
labelItem->setVisible(true);
|
|
|
width=rect.width()+labelItem->pos().x();
|
|
|
}
|
|
|
|
|
|
if ((i+1)%2 && i>1) {
|
|
|
QGraphicsRectItem *rectItem = static_cast<QGraphicsRectItem*>(shades.at(i/2-1));
|
|
|
rectItem->setRect(layout[i-1], chartRect.top(),layout[i]-layout[i-1], chartRect.height());
|
|
|
}
|
|
|
lineItem = static_cast<QGraphicsLineItem*>(axis.at(i+1));
|
|
|
lineItem->setLine(layout[i], chartRect.bottom(),layout[i], chartRect.bottom()+5);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
void ChartBarCategoryAxisX::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 ChartBarCategoryAxisX::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 = createCategoryLabels(ChartAxis::layout());
|
|
|
qreal width=0;
|
|
|
qreal height=0;
|
|
|
|
|
|
switch (which) {
|
|
|
case Qt::MinimumSize:
|
|
|
width = fn.boundingRect("...").width();
|
|
|
height = fn.height()+label_padding;
|
|
|
width=qMax(width,base.width());
|
|
|
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));
|
|
|
width+=rect.width();
|
|
|
height=qMax(rect.height()+label_padding,height);
|
|
|
}
|
|
|
width=qMax(width,base.width());
|
|
|
height+=base.height();
|
|
|
sh = QSizeF(width,height);
|
|
|
break;
|
|
|
}
|
|
|
default:
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
return sh;
|
|
|
}
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
