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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "chartpresenter_p.h"
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#include "qchart.h"
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#include "qchart_p.h"
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#include "qaxis.h"
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#include "chartdataset_p.h"
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#include "charttheme_p.h"
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#include "chartanimator_p.h"
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#include "chartanimation_p.h"
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#include "qabstractseries_p.h"
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#include "qareaseries.h"
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#include "chartaxis_p.h"
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#include "chartaxisx_p.h"
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#include "chartaxisy_p.h"
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#include "areachartitem_p.h"
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#include "chartbackground_p.h"
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#include <QTimer>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartPresenter::ChartPresenter(QChart* chart,ChartDataSet* dataset):QObject(chart),
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m_chart(chart),
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m_animator(0),
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m_dataset(dataset),
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m_chartTheme(0),
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m_chartRect(QRectF(QPoint(0,0),m_chart->size())),
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m_options(QChart::NoAnimation),
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m_minLeftMargin(0),
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m_minBottomMargin(0),
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m_state(ShowState),
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m_backgroundItem(0),
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m_titleItem(0),
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m_marginBig(60),
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m_marginSmall(20),
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m_marginTiny(10),
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m_chartMargins(QRect(m_marginBig,m_marginBig,0,0))
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{
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}
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ChartPresenter::~ChartPresenter()
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{
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delete m_chartTheme;
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}
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void ChartPresenter::setGeometry(const QRectF& rect)
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{
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m_rect = rect;
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Q_ASSERT(m_rect.isValid());
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updateLayout();
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}
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void ChartPresenter::setMinimumMarginWidth(ChartAxis* axis, qreal width)
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{
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switch(axis->axisType()){
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case ChartAxis::X_AXIS:
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{
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if(width>m_chartRect.width()+ m_chartMargins.left()) {
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m_minLeftMargin= width - m_chartRect.width();
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updateLayout();
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}
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break;
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}
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case ChartAxis::Y_AXIS:
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{
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if(m_minLeftMargin!=width){
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m_minLeftMargin= width;
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updateLayout();
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}
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break;
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}
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}
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}
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void ChartPresenter::setMinimumMarginHeight(ChartAxis* axis, qreal height)
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{
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switch(axis->axisType()){
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case ChartAxis::X_AXIS:
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{
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if(m_minBottomMargin!=height) {
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m_minBottomMargin= height;
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updateLayout();
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}
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break;
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}
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case ChartAxis::Y_AXIS:
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{
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if(height>m_chartMargins.bottom()+m_chartRect.height()){
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m_minBottomMargin= height - m_chartRect.height();
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updateLayout();
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}
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break;
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}
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}
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}
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void ChartPresenter::handleAxisAdded(QAxis* axis,Domain* domain)
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{
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ChartAxis* item;
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if(axis == m_dataset->axisX()){
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item = new ChartAxisX(axis,this);
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}else{
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item = new ChartAxisY(axis,this);
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}
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if(m_options.testFlag(QChart::GridAxisAnimations)){
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item->setAnimator(m_animator);
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item->setAnimation(new AxisAnimation(item));
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}
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if(axis==m_dataset->axisX()){
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m_chartTheme->decorate(axis,true);
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QObject::connect(domain,SIGNAL(rangeXChanged(qreal,qreal,int)),item,SLOT(handleRangeChanged(qreal,qreal,int)));
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//initialize
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item->handleRangeChanged(domain->minX(),domain->maxX(),domain->tickXCount());
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}
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else{
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m_chartTheme->decorate(axis,false);
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QObject::connect(domain,SIGNAL(rangeYChanged(qreal,qreal,int)),item,SLOT(handleRangeChanged(qreal,qreal,int)));
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//initialize
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item->handleRangeChanged(domain->minY(),domain->maxY(),domain->tickYCount());
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}
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QObject::connect(this,SIGNAL(geometryChanged(QRectF)),item,SLOT(handleGeometryChanged(QRectF)));
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//initialize
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if(m_chartRect.isValid()) item->handleGeometryChanged(m_chartRect);
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m_axisItems.insert(axis, item);
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}
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void ChartPresenter::handleAxisRemoved(QAxis* axis)
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{
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ChartAxis* item = m_axisItems.take(axis);
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Q_ASSERT(item);
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if(m_animator) m_animator->removeAnimation(item);
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delete item;
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}
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void ChartPresenter::handleSeriesAdded(QAbstractSeries* series,Domain* domain)
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{
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Chart *item = series->d_ptr->createGraphics(this);
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Q_ASSERT(item);
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QObject::connect(this,SIGNAL(geometryChanged(QRectF)),item,SLOT(handleGeometryChanged(QRectF)));
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QObject::connect(domain,SIGNAL(domainChanged(qreal,qreal,qreal,qreal)),item,SLOT(handleDomainChanged(qreal,qreal,qreal,qreal)));
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//initialize
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item->handleDomainChanged(domain->minX(),domain->maxX(),domain->minY(),domain->maxY());
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if(m_chartRect.isValid()) item->handleGeometryChanged(m_chartRect);
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m_chartItems.insert(series,item);
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}
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void ChartPresenter::handleSeriesRemoved(QAbstractSeries* series)
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{
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Chart* item = m_chartItems.take(series);
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Q_ASSERT(item);
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if(m_animator) {
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//small hack to handle area animations
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if(series->type() == QAbstractSeries::SeriesTypeArea){
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QAreaSeries* areaSeries = static_cast<QAreaSeries*>(series);
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AreaChartItem* area = static_cast<AreaChartItem*>(item);
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m_animator->removeAnimation(area->upperLineItem());
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if(areaSeries->lowerSeries()) m_animator->removeAnimation(area->lowerLineItem());
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}else
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m_animator->removeAnimation(item);
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}
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delete item;
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}
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void ChartPresenter::setTheme(QChart::ChartTheme theme,bool force)
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{
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if(m_chartTheme && m_chartTheme->id() == theme) return;
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delete m_chartTheme;
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m_chartTheme = ChartTheme::createTheme(theme);
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m_chartTheme->setForced(force);
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m_chartTheme->decorate(m_chart);
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m_chartTheme->decorate(m_chart->legend());
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resetAllElements();
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// We do not want "force" to stay on.
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// Bar/pie are calling decorate when adding/removing slices/bars which means
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// that to preserve users colors "force" must not be on.
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m_chartTheme->setForced(false);
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}
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QChart::ChartTheme ChartPresenter::theme()
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{
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return m_chartTheme->id();
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}
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void ChartPresenter::setAnimationOptions(QChart::AnimationOptions options)
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{
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if(m_options!=options) {
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m_options=options;
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if(m_options!=QChart::NoAnimation && !m_animator) {
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m_animator= new ChartAnimator(this);
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}
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resetAllElements();
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}
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}
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void ChartPresenter::resetAllElements()
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{
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QList<QAxis *> axisList = m_axisItems.uniqueKeys();
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QList<QAbstractSeries *> seriesList = m_chartItems.uniqueKeys();
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foreach(QAxis *axis, axisList) {
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handleAxisRemoved(axis);
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handleAxisAdded(axis,m_dataset->domain(axis));
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}
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foreach(QAbstractSeries *series, seriesList) {
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handleSeriesRemoved(series);
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handleSeriesAdded(series,m_dataset->domain(series));
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// m_dataset->removeSeries(series);
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// m_dataset->addSeries(series);
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}
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}
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void ChartPresenter::zoomIn(qreal factor)
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{
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QRectF rect = chartGeometry();
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rect.setWidth(rect.width()/factor);
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rect.setHeight(rect.height()/factor);
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rect.moveCenter(chartGeometry().center());
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zoomIn(rect);
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}
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void ChartPresenter::zoomIn(const QRectF& rect)
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{
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QRectF r = rect.normalized();
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r.translate(-m_chartMargins.topLeft());
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if (!r.isValid())
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return;
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m_state = ZoomInState;
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m_statePoint = QPointF(r.center().x()/chartGeometry().width(),r.center().y()/chartGeometry().height());
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m_dataset->zoomInDomain(r,chartGeometry().size());
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m_state = ShowState;
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}
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void ChartPresenter::zoomOut(qreal factor)
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{
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m_state = ZoomOutState;
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QRectF chartRect;
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chartRect.setSize(chartGeometry().size());
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QRectF rect;
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rect.setSize(chartRect.size()/factor);
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rect.moveCenter(chartRect.center());
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if (!rect.isValid())
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return;
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m_statePoint = QPointF(rect.center().x()/chartGeometry().width(),rect.center().y()/chartGeometry().height());
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m_dataset->zoomOutDomain(rect, chartRect.size());
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m_state = ShowState;
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}
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void ChartPresenter::scroll(qreal dx,qreal dy)
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{
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if(dx<0) m_state=ScrollLeftState;
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if(dx>0) m_state=ScrollRightState;
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if(dy<0) m_state=ScrollUpState;
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if(dy>0) m_state=ScrollDownState;
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m_dataset->scrollDomain(dx,dy,chartGeometry().size());
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m_state = ShowState;
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}
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QChart::AnimationOptions ChartPresenter::animationOptions() const
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{
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return m_options;
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}
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void ChartPresenter::updateLayout()
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{
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if (!m_rect.isValid()) return;
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// recalculate title size
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QSize titleSize;
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int titlePadding=0;
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if (m_titleItem) {
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titleSize= m_titleItem->boundingRect().size().toSize();
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}
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//defaults
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m_chartMargins = QRect(QPoint(m_minLeftMargin>m_marginBig?m_minLeftMargin:m_marginBig,m_marginBig),QPoint(m_marginBig,m_minBottomMargin>m_marginBig?m_minBottomMargin:m_marginBig));
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titlePadding = m_chartMargins.top()/2;
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QLegend* legend = m_chart->d_ptr->m_legend;
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// recalculate legend position
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if (legend != 0 && legend->isAttachedToChart() && legend->isEnabled()) {
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QRect legendRect;
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// Reserve some space for legend
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switch (legend->alignment()) {
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case Qt::AlignTop: {
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int ledgendSize = legend->minHeight();
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int topPadding = 2*m_marginTiny + titleSize.height() + ledgendSize + m_marginTiny;
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m_chartMargins = QRect(QPoint(m_chartMargins.left(),topPadding),QPoint(m_chartMargins.right(),m_chartMargins.bottom()));
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m_legendMargins = QRect(QPoint(m_chartMargins.left(),topPadding - (ledgendSize + m_marginTiny)),QPoint(m_chartMargins.right(),m_rect.height()-topPadding + m_marginTiny));
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titlePadding = m_marginTiny + m_marginTiny;
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break;
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}
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case Qt::AlignBottom: {
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int ledgendSize = legend->minHeight();
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int bottomPadding = m_marginTiny + m_marginSmall + ledgendSize + m_marginTiny + m_minBottomMargin;
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m_chartMargins = QRect(QPoint(m_chartMargins.left(),m_chartMargins.top()),QPoint(m_chartMargins.right(),bottomPadding));
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m_legendMargins = QRect(QPoint(m_chartMargins.left(),m_rect.height()-bottomPadding + m_marginTiny + m_minBottomMargin),QPoint(m_chartMargins.right(),m_marginTiny + m_marginSmall));
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titlePadding = m_chartMargins.top()/2;
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break;
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}
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case Qt::AlignLeft: {
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int ledgendSize = legend->minWidth();
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int leftPadding = m_marginTiny + m_marginSmall + ledgendSize + m_marginTiny + m_minLeftMargin;
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m_chartMargins = QRect(QPoint(leftPadding,m_chartMargins.top()),QPoint(m_chartMargins.right(),m_chartMargins.bottom()));
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m_legendMargins = QRect(QPoint(m_marginTiny + m_marginSmall,m_chartMargins.top()),QPoint(m_rect.width()-leftPadding + m_marginTiny + m_minLeftMargin,m_chartMargins.bottom()));
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titlePadding = m_chartMargins.top()/2;
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break;
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}
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case Qt::AlignRight: {
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int ledgendSize = legend->minWidth();
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int rightPadding = m_marginTiny + m_marginSmall + ledgendSize + m_marginTiny;
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m_chartMargins = QRect(QPoint(m_chartMargins.left(),m_chartMargins.top()),QPoint(rightPadding,m_chartMargins.bottom()));
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m_legendMargins = QRect(QPoint(m_rect.width()- rightPadding+ m_marginTiny ,m_chartMargins.top()),QPoint(m_marginTiny + m_marginSmall,m_chartMargins.bottom()));
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titlePadding = m_chartMargins.top()/2;
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break;
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}
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default: {
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break;
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}
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}
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}
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if(m_rect.width()<2*(m_chartMargins.top()+m_chartMargins.bottom()) || m_rect.height()< 2*(m_chartMargins.top() + m_chartMargins.bottom()))
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{
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m_chart->setMinimumSize(2*(m_chartMargins.top()+m_chartMargins.bottom()),2*(m_chartMargins.top() + m_chartMargins.bottom()));
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return;
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}
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// recalculate title position
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if (m_titleItem) {
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QPointF center = m_rect.center() -m_titleItem->boundingRect().center();
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m_titleItem->setPos(center.x(),titlePadding);
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}
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//recalculate background gradient
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if (m_backgroundItem) {
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m_backgroundItem->setRect(m_rect.adjusted(m_marginTiny,m_marginTiny, -m_marginTiny, -m_marginTiny));
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}
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QRectF chartRect = m_rect.adjusted(m_chartMargins.left(),m_chartMargins.top(),-m_chartMargins.right(),-m_chartMargins.bottom());
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legend->setGeometry(m_rect.adjusted(m_legendMargins.left(),m_legendMargins.top(),-m_legendMargins.right(),-m_legendMargins.bottom()));
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if(m_chartRect!=chartRect && chartRect.isValid()){
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m_chartRect=chartRect;
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emit geometryChanged(m_chartRect);
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}
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}
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void ChartPresenter::createChartBackgroundItem()
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{
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if (!m_backgroundItem) {
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m_backgroundItem = new ChartBackground(rootItem());
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m_backgroundItem->setPen(Qt::NoPen);
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m_backgroundItem->setZValue(ChartPresenter::BackgroundZValue);
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}
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}
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void ChartPresenter::createChartTitleItem()
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{
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if (!m_titleItem) {
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m_titleItem = new QGraphicsSimpleTextItem(rootItem());
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m_titleItem->setZValue(ChartPresenter::BackgroundZValue);
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}
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}
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void ChartPresenter::handleAnimationFinished()
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{
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m_animations.removeAll(qobject_cast<ChartAnimation*>(sender()));
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if(m_animations.empty()) emit animationsFinished();
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}
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void ChartPresenter::startAnimation(ChartAnimation* animation)
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{
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if (animation->state() != QAbstractAnimation::Stopped) animation->stop();
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QObject::connect(animation, SIGNAL(finished()),this,SLOT(handleAnimationFinished()),Qt::UniqueConnection);
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if(!m_animations.isEmpty()){
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m_animations.append(animation);
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}
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QTimer::singleShot(0, animation, SLOT(start()));
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}
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#include "moc_chartpresenter_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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