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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 "chartaxis_p.h"
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#include "qabstractaxis.h"
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#include "qabstractaxis_p.h"
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#include "qaxiscategories_p.h"
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#include "chartpresenter_p.h"
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#include "chartanimator_p.h"
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#include <QPainter>
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#include <QDebug>
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#include <cmath>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartAxis::ChartAxis(QAbstractAxis *axis,ChartPresenter *presenter) : Chart(presenter),
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m_chartAxis(axis),
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m_labelsAngle(0),
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m_grid(new QGraphicsItemGroup(presenter->rootItem())),
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m_shades(new QGraphicsItemGroup(presenter->rootItem())),
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m_labels(new QGraphicsItemGroup(presenter->rootItem())),
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m_axis(new QGraphicsItemGroup(presenter->rootItem())),
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m_min(0),
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m_max(0),
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m_ticksCount(0),
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m_animation(0),
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m_minWidth(0),
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m_minHeight(0)
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{
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//initial initialization
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m_axis->setZValue(ChartPresenter::AxisZValue);
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m_axis->setHandlesChildEvents(false);
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m_shades->setZValue(ChartPresenter::ShadesZValue);
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m_grid->setZValue(ChartPresenter::GridZValue);
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QObject::connect(m_chartAxis->d_ptr.data(),SIGNAL(updated()),this,SLOT(handleAxisUpdated()));
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QGraphicsSimpleTextItem item;
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m_font = item.font();
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handleAxisUpdated();
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}
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ChartAxis::~ChartAxis()
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{
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}
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void ChartAxis::setAnimation(AxisAnimation* animation)
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{
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m_animation=animation;
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}
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void ChartAxis::setLayout(QVector<qreal> &layout)
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{
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m_layoutVector=layout;
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}
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void ChartAxis::createItems(int count)
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{
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if (m_axis->children().size() == 0)
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m_axis->addToGroup(new AxisItem(this));
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for (int i = 0; i < count; ++i) {
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m_grid->addToGroup(new QGraphicsLineItem());
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m_labels->addToGroup(new QGraphicsSimpleTextItem());
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m_axis->addToGroup(new QGraphicsLineItem());
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if ((m_grid->childItems().size())%2 && m_grid->childItems().size()>2) m_shades->addToGroup(new QGraphicsRectItem());
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}
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}
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void ChartAxis::deleteItems(int count)
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{
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QList<QGraphicsItem *> lines = m_grid->childItems();
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QList<QGraphicsItem *> labels = m_labels->childItems();
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QList<QGraphicsItem *> shades = m_shades->childItems();
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QList<QGraphicsItem *> axis = m_axis->childItems();
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for (int i = 0; i < count; ++i) {
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if (lines.size()%2 && lines.size() > 1) delete(shades.takeLast());
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delete(lines.takeLast());
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delete(labels.takeLast());
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delete(axis.takeLast());
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}
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}
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void ChartAxis::updateLayout(QVector<qreal> &layout)
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{
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int diff = m_layoutVector.size() - layout.size();
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if (diff>0) {
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deleteItems(diff);
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}
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else if (diff<0) {
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createItems(-diff);
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}
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if( diff!=0) handleAxisUpdated();
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if (m_animation) {
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switch(presenter()->state()){
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case ChartPresenter::ZoomInState:
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m_animation->setAnimationType(AxisAnimation::ZoomInAnimation);
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m_animation->setAnimationPoint(presenter()->statePoint());
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break;
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case ChartPresenter::ZoomOutState:
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m_animation->setAnimationType(AxisAnimation::ZoomOutAnimation);
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m_animation->setAnimationPoint(presenter()->statePoint());
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break;
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case ChartPresenter::ScrollUpState:
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case ChartPresenter::ScrollLeftState:
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m_animation->setAnimationType(AxisAnimation::MoveBackwordAnimation);
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break;
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case ChartPresenter::ScrollDownState:
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case ChartPresenter::ScrollRightState:
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m_animation->setAnimationType(AxisAnimation::MoveForwardAnimation);
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break;
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case ChartPresenter::ShowState:
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m_animation->setAnimationType(AxisAnimation::DefaultAnimation);
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break;
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}
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m_animation->setValues(m_layoutVector,layout);
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presenter()->startAnimation(m_animation);
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}
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else {
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setLayout(layout);
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updateGeometry();
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}
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}
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bool ChartAxis::createLabels(QStringList &labels,qreal min, qreal max,int ticks) const
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{
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Q_ASSERT(max>min);
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Q_ASSERT(ticks>1);
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//TODO:: QAxisCategories* categories = m_chartAxis->categories();
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QAxisCategories* categories = new QAxisCategories();
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bool category = categories->count()>0;
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if (!category) {
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int n = qMax(int(-floor(log10((max-min)/(ticks-1)))),0);
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n++;
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for (int i=0; i< ticks; i++) {
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qreal value = min + (i * (max - min)/ (ticks-1));
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Q_UNUSED(value);
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labels << QString::number(value,'f',n);
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}
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} else {
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QList<qreal> values = categories->values();
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for (int i=0; i< ticks; i++) {
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qreal value = (min + (i * (max - min)/ (ticks-1)));
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int j=0;
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for (; j<values.count(); j++) {
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if (values.at(j) > value) break;
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}
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if (j!=0) value=values.at(j-1);
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QString label = categories->label(value);
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labels << label;
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}
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}
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return category;
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}
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void ChartAxis::setAxisOpacity(qreal opacity)
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{
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m_axis->setOpacity(opacity);
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}
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qreal ChartAxis::axisOpacity() const
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{
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return m_axis->opacity();
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}
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void ChartAxis::setGridOpacity(qreal opacity)
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{
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m_grid->setOpacity(opacity);
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}
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qreal ChartAxis::gridOpacity() const
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{
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return m_grid->opacity();
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}
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void ChartAxis::setLabelsOpacity(qreal opacity)
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{
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m_labels->setOpacity(opacity);
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}
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qreal ChartAxis::labelsOpacity() const
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{
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return m_labels->opacity();
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}
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void ChartAxis::setShadesOpacity(qreal opacity)
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{
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m_shades->setOpacity(opacity);
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}
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qreal ChartAxis::shadesOpacity() const
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{
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return m_shades->opacity();
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}
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void ChartAxis::setLabelsAngle(int angle)
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{
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foreach(QGraphicsItem* item , m_labels->childItems()) {
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item->setRotation(angle);
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}
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m_labelsAngle=angle;
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}
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void ChartAxis::setLabelsPen(const QPen &pen)
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{
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foreach(QGraphicsItem* item , m_labels->childItems()) {
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static_cast<QGraphicsSimpleTextItem*>(item)->setPen(pen);
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}
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}
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void ChartAxis::setLabelsBrush(const QBrush &brush)
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{
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foreach(QGraphicsItem* item , m_labels->childItems()) {
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static_cast<QGraphicsSimpleTextItem*>(item)->setBrush(brush);
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}
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}
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void ChartAxis::setLabelsFont(const QFont &font)
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{
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foreach(QGraphicsItem* item , m_labels->childItems()) {
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static_cast<QGraphicsSimpleTextItem*>(item)->setFont(font);
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}
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m_font = font;
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}
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void ChartAxis::setShadesBrush(const QBrush &brush)
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{
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foreach(QGraphicsItem* item , m_shades->childItems()) {
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static_cast<QGraphicsRectItem*>(item)->setBrush(brush);
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}
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}
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void ChartAxis::setShadesPen(const QPen &pen)
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{
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foreach(QGraphicsItem* item , m_shades->childItems()) {
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static_cast<QGraphicsRectItem*>(item)->setPen(pen);
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}
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}
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void ChartAxis::setAxisPen(const QPen &pen)
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{
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foreach(QGraphicsItem* item , m_axis->childItems()) {
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static_cast<QGraphicsLineItem*>(item)->setPen(pen);
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}
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}
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void ChartAxis::setGridPen(const QPen &pen)
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{
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foreach(QGraphicsItem* item , m_grid->childItems()) {
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static_cast<QGraphicsLineItem*>(item)->setPen(pen);
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}
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}
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bool ChartAxis::isEmpty()
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{
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return m_rect.isEmpty() || qFuzzyIsNull(m_min - m_max) || m_ticksCount==0;
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}
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//handlers
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void ChartAxis::handleAxisCategoriesUpdated()
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{
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if (isEmpty()) return;
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updateLayout(m_layoutVector);
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}
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void ChartAxis::handleAxisUpdated()
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{
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if (isEmpty()) return;
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if (m_chartAxis->isAxisVisible()) {
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setAxisOpacity(100);
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} else {
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setAxisOpacity(0);
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}
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if (m_chartAxis->isGridLineVisible()) {
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setGridOpacity(100);
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} else {
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setGridOpacity(0);
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}
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if (m_chartAxis->labelsVisible()) {
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setLabelsOpacity(100);
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} else {
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setLabelsOpacity(0);
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}
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if (m_chartAxis->shadesVisible()) {
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setShadesOpacity(100);
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} else {
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setShadesOpacity(0);
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}
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setLabelsAngle(m_chartAxis->labelsAngle());
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setAxisPen(m_chartAxis->axisPen());
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setLabelsPen(m_chartAxis->labelsPen());
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setLabelsBrush(m_chartAxis->labelsBrush());
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setLabelsFont(m_chartAxis->labelsFont());
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setGridPen(m_chartAxis->gridLinePen());
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setShadesPen(m_chartAxis->shadesPen());
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setShadesBrush(m_chartAxis->shadesBrush());
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}
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void ChartAxis::handleRangeChanged(qreal min, qreal max,int tickCount)
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{
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if (qFuzzyIsNull(min - max) || tickCount < 2)
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return;
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m_min = min;
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m_max = max;
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m_ticksCount= tickCount;
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if (isEmpty()) return;
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QVector<qreal> layout = calculateLayout();
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updateLayout(layout);
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}
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void ChartAxis::handleGeometryChanged(const QRectF &rect)
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{
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if(m_rect != rect)
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{
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m_rect = rect;
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if (isEmpty()) return;
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QVector<qreal> layout = calculateLayout();
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updateLayout(layout);
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}
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}
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qreal ChartAxis::minimumWidth()
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{
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if(m_minWidth == 0) updateGeometry();
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return m_minWidth;
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}
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qreal ChartAxis::minimumHeight()
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{
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if(m_minHeight == 0) updateGeometry();
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return m_minHeight;
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}
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void ChartAxis::axisSelected()
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{
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qDebug()<<"TODO: axis clicked";
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}
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#include "moc_chartaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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