|
|
/****************************************************************************
|
|
|
**
|
|
|
** 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 "barchartitem_p.h"
|
|
|
#include "bar_p.h"
|
|
|
#include "barlabel_p.h"
|
|
|
#include "qbarset.h"
|
|
|
#include "qbarseries.h"
|
|
|
#include "qchart.h"
|
|
|
#include "qchartaxis.h"
|
|
|
#include "qchartaxiscategories.h"
|
|
|
#include "chartpresenter_p.h"
|
|
|
#include "chartanimator_p.h"
|
|
|
#include "chartdataset_p.h"
|
|
|
#include <QDebug>
|
|
|
#include <QToolTip>
|
|
|
|
|
|
QTCOMMERCIALCHART_BEGIN_NAMESPACE
|
|
|
|
|
|
BarChartItem::BarChartItem(QBarSeries *series, ChartPresenter *presenter) :
|
|
|
ChartItem(presenter),
|
|
|
m_layoutSet(false),
|
|
|
m_series(series)
|
|
|
{
|
|
|
connect(series, SIGNAL(showToolTip(QPoint,QString)), this, SLOT(showToolTip(QPoint,QString)));
|
|
|
connect(series, SIGNAL(updatedBars()), this, SLOT(handleLayoutChanged()));
|
|
|
connect(series, SIGNAL(restructuredBar(int)), this, SLOT(handleModelChanged(int)));
|
|
|
setZValue(ChartPresenter::BarSeriesZValue);
|
|
|
dataChanged();
|
|
|
}
|
|
|
|
|
|
BarChartItem::~BarChartItem()
|
|
|
{
|
|
|
disconnect(this,SLOT(showToolTip(QPoint,QString)));
|
|
|
}
|
|
|
|
|
|
void BarChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
|
{
|
|
|
if (!m_layoutSet) {
|
|
|
qWarning() << "BarChartItem::paint called without layout set. Aborting.";
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
foreach(QGraphicsItem* i, childItems())
|
|
|
i->paint(painter,option,widget);
|
|
|
}
|
|
|
|
|
|
QRectF BarChartItem::boundingRect() const
|
|
|
{
|
|
|
return m_rect;
|
|
|
}
|
|
|
|
|
|
void BarChartItem::dataChanged()
|
|
|
{
|
|
|
// TODO: performance optimizations. Do we really need to delete and create items every time data is changed or can we reuse them?
|
|
|
// Delete old bars
|
|
|
foreach (QGraphicsItem *item, childItems())
|
|
|
delete item;
|
|
|
|
|
|
m_bars.clear();
|
|
|
m_labels.clear();
|
|
|
m_layout.clear();
|
|
|
|
|
|
// Create new graphic items for bars
|
|
|
for (int c = 0; c < m_series->categoryCount(); c++) {
|
|
|
QString category = m_series->categoryName(c);
|
|
|
for (int s = 0; s < m_series->barsetCount(); s++) {
|
|
|
QBarSet *set = m_series->barsetAt(s);
|
|
|
Bar *bar = new Bar(category,this);
|
|
|
childItems().append(bar);
|
|
|
m_bars.append(bar);
|
|
|
connect(bar, SIGNAL(clicked(QString,Qt::MouseButtons)), set, SIGNAL(clicked(QString,Qt::MouseButtons)));
|
|
|
connect(bar, SIGNAL(hoverEntered(QPoint)), set, SLOT(barHoverEnterEvent(QPoint)));
|
|
|
connect(bar, SIGNAL(hoverLeaved()), set, SLOT(barHoverLeaveEvent()));
|
|
|
m_layout.append(QRectF(0, 0, 0, 0));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Create labels
|
|
|
for (int category = 0; category < m_series->categoryCount(); category++) {
|
|
|
for (int s = 0; s < m_series->barsetCount(); s++) {
|
|
|
QBarSet *set = m_series->barsetAt(s);
|
|
|
BarLabel *value = new BarLabel(*set, this);
|
|
|
childItems().append(value);
|
|
|
m_labels.append(value);
|
|
|
connect(set,SIGNAL(labelsVisibleChanged(bool)),value,SLOT(labelsVisibleChanged(bool)));
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
QVector<QRectF> BarChartItem::calculateLayout()
|
|
|
{
|
|
|
QVector<QRectF> layout;
|
|
|
|
|
|
// Use temporary qreals for accurancy (we might get some compiler warnings... :)
|
|
|
qreal categoryCount = m_series->categoryCount();
|
|
|
qreal setCount = m_series->barsetCount();
|
|
|
|
|
|
qreal width = geometry().width();
|
|
|
qreal height = geometry().height();
|
|
|
|
|
|
qreal max = m_series->max();
|
|
|
|
|
|
// Domain:
|
|
|
if (m_domainMaxY > max) {
|
|
|
max = m_domainMaxY;
|
|
|
}
|
|
|
|
|
|
qreal scale = (height / max);
|
|
|
qreal categoryWidth = width / categoryCount;
|
|
|
qreal barWidth = categoryWidth / (setCount+1);
|
|
|
|
|
|
int itemIndex(0);
|
|
|
for (int category = 0; category < categoryCount; category++) {
|
|
|
qreal xPos = categoryWidth * category + barWidth / 2;
|
|
|
qreal yPos = height;
|
|
|
for (int set = 0; set < setCount; set++) {
|
|
|
QBarSet* barSet = m_series->barsetAt(set);
|
|
|
|
|
|
qreal barHeight = barSet->valueAt(category) * scale;
|
|
|
Bar* bar = m_bars.at(itemIndex);
|
|
|
|
|
|
QRectF rect(xPos, yPos - barHeight, barWidth, barHeight);
|
|
|
layout.append(rect);
|
|
|
bar->setPen(barSet->pen());
|
|
|
bar->setBrush(barSet->brush());
|
|
|
|
|
|
BarLabel* label = m_labels.at(itemIndex);
|
|
|
|
|
|
if (!qFuzzyIsNull(barSet->valueAt(category))) {
|
|
|
label->setText(QString::number(barSet->valueAt(category)));
|
|
|
} else {
|
|
|
label->setText(QString(""));
|
|
|
}
|
|
|
|
|
|
label->setPos(xPos + (rect.width()/2 - label->boundingRect().width()/2)
|
|
|
,yPos - barHeight/2 - label->boundingRect().height()/2);
|
|
|
// value->setFont(barSet->valueFont());
|
|
|
|
|
|
itemIndex++;
|
|
|
xPos += barWidth;
|
|
|
}
|
|
|
}
|
|
|
return layout;
|
|
|
}
|
|
|
|
|
|
void BarChartItem::applyLayout(const QVector<QRectF> &layout)
|
|
|
{
|
|
|
if (animator())
|
|
|
animator()->updateLayout(this, m_layout, layout);
|
|
|
else
|
|
|
setLayout(layout);
|
|
|
}
|
|
|
|
|
|
void BarChartItem::setLayout(const QVector<QRectF> &layout)
|
|
|
{
|
|
|
m_layout = layout;
|
|
|
|
|
|
for (int i=0; i < m_bars.count(); i++)
|
|
|
m_bars.at(i)->setRect(layout.at(i));
|
|
|
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
//handlers
|
|
|
|
|
|
void BarChartItem::handleModelChanged(int index)
|
|
|
{
|
|
|
Q_UNUSED(index)
|
|
|
dataChanged();
|
|
|
}
|
|
|
|
|
|
void BarChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY)
|
|
|
{
|
|
|
m_domainMinX = minX;
|
|
|
m_domainMaxX = maxX;
|
|
|
m_domainMinY = minY;
|
|
|
m_domainMaxY = maxY;
|
|
|
handleLayoutChanged();
|
|
|
}
|
|
|
|
|
|
void BarChartItem::handleGeometryChanged(const QRectF &rect)
|
|
|
{
|
|
|
m_rect = rect;
|
|
|
handleLayoutChanged();
|
|
|
m_layoutSet = true;
|
|
|
setPos(rect.topLeft());
|
|
|
}
|
|
|
|
|
|
void BarChartItem::handleLayoutChanged()
|
|
|
{
|
|
|
QVector<QRectF> layout = calculateLayout();
|
|
|
applyLayout(layout);
|
|
|
update();
|
|
|
}
|
|
|
|
|
|
void BarChartItem::showToolTip(QPoint pos, QString tip)
|
|
|
{
|
|
|
// TODO: cool tooltip instead of default
|
|
|
QToolTip::showText(pos, tip);
|
|
|
}
|
|
|
|
|
|
#include "moc_barchartitem_p.cpp"
|
|
|
|
|
|
QTCOMMERCIALCHART_END_NAMESPACE
|
|
|
|
