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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 "chartpresenter_p.h"
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#include "chartlayout_p.h"
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#include "domain_p.h"
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#include <qmath.h>
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#include <QDateTime>
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#include <QValueAxis>
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#include <QGraphicsLayout>
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#include <QFontMetrics>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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ChartAxis::ChartAxis(QAbstractAxis *axis, ChartPresenter *presenter, bool intervalAxis)
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: ChartElement(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_arrow(new QGraphicsItemGroup(presenter->rootItem())),
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m_title(new QGraphicsSimpleTextItem(presenter->rootItem())),
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m_min(0),
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m_max(0),
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m_animation(0),
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m_labelPadding(5),
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m_intervalAxis(intervalAxis)
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{
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//initial initialization
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m_arrow->setZValue(ChartPresenter::AxisZValue);
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m_arrow->setHandlesChildEvents(false);
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m_labels->setZValue(ChartPresenter::AxisZValue);
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m_shades->setZValue(ChartPresenter::ShadesZValue);
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m_grid->setZValue(ChartPresenter::GridZValue);
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m_title->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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}
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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_arrow->childItems().size() == 0)
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m_arrow->addToGroup(new AxisItem(this, presenter()->rootItem()));
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if (m_intervalAxis && m_grid->childItems().size() == 0) {
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for (int i = 0 ; i < 2 ; i ++)
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m_grid->addToGroup(new QGraphicsLineItem(presenter()->rootItem()));
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}
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for (int i = 0; i < count; ++i) {
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m_grid->addToGroup(new QGraphicsLineItem(presenter()->rootItem()));
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QGraphicsSimpleTextItem *label = new QGraphicsSimpleTextItem(presenter()->rootItem());
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label->setFont(m_font);
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m_labels->addToGroup(label);
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m_arrow->addToGroup(new QGraphicsLineItem(presenter()->rootItem()));
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if ((m_grid->childItems().size()) % 2 && m_grid->childItems().size() > 2)
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m_shades->addToGroup(new QGraphicsRectItem(presenter()->rootItem()));
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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_arrow->childItems();
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for (int i = 0; i < count; ++i) {
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if (lines.size() % 2 && lines.size() > 1)
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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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else if (diff < 0)
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createItems(-diff);
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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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} else {
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setLayout(layout);
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updateGeometry();
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}
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}
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void ChartAxis::setArrowOpacity(qreal opacity)
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{
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m_arrow->setOpacity(opacity);
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}
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qreal ChartAxis::arrowOpacity() const
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{
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return m_arrow->opacity();
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}
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void ChartAxis::setArrowVisibility(bool visible)
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{
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m_arrow->setOpacity(visible);
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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::setGridVisibility(bool visible)
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{
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m_grid->setOpacity(visible);
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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::setLabelsVisibility(bool visible)
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{
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m_labels->setOpacity(visible);
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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::setShadesVisibility(bool visible)
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{
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m_shades->setVisible(visible);
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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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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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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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void ChartAxis::setLabelsFont(const QFont &font)
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{
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if (m_font != font) {
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m_font = font;
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foreach (QGraphicsItem *item , m_labels->childItems())
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static_cast<QGraphicsSimpleTextItem *>(item)->setFont(font);
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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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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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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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void ChartAxis::setArrowPen(const QPen &pen)
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{
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foreach (QGraphicsItem *item , m_arrow->childItems())
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static_cast<QGraphicsLineItem *>(item)->setPen(pen);
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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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void ChartAxis::setLabelPadding(int padding)
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{
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m_labelPadding = padding;
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}
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bool ChartAxis::isEmpty()
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{
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return m_axisRect.isEmpty() || m_gridRect.isEmpty() || qFuzzyCompare(m_min, m_max);
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}
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void ChartAxis::handleDomainUpdated()
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{
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Domain *domain = qobject_cast<Domain *>(sender());
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qreal min(0);
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qreal max(0);
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if (m_chartAxis->orientation() == Qt::Horizontal) {
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min = domain->minX();
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max = domain->maxX();
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} else if (m_chartAxis->orientation() == Qt::Vertical) {
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min = domain->minY();
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max = domain->maxY();
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}
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if (!qFuzzyCompare(m_min, min) || !qFuzzyCompare(m_max, max)) {
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m_min = min;
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m_max = max;
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if (!isEmpty()) {
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QVector<qreal> layout = calculateLayout();
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updateLayout(layout);
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QSizeF before = effectiveSizeHint(Qt::PreferredSize);
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QSizeF after = sizeHint(Qt::PreferredSize);
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if (before != after) {
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QGraphicsLayoutItem::updateGeometry();
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//we don't want to call invalidate on layout, since it will change minimum size of component,
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//which we would like to avoid since it causes nasty flips when scrolling or zooming,
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//instead recalculate layout and use plotArea for extra space.
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presenter()->layout()->setGeometry(presenter()->layout()->geometry());
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}
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}
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}
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}
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void ChartAxis::handleAxisUpdated()
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{
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if (isEmpty())
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return;
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bool visible = m_chartAxis->isVisible();
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//TODO: split this into separate signal/slots ?
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setArrowVisibility(visible && m_chartAxis->isLineVisible());
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setGridVisibility(visible && m_chartAxis->isGridLineVisible());
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setLabelsVisibility(visible && m_chartAxis->labelsVisible());
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setShadesVisibility(visible && m_chartAxis->shadesVisible());
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setLabelsAngle(m_chartAxis->labelsAngle());
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setArrowPen(m_chartAxis->linePen());
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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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setTitleText(m_chartAxis->title());
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setTitleFont(m_chartAxis->titleFont());
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setTitlePen(m_chartAxis->titlePen());
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setTitleBrush(m_chartAxis->titleBrush());
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}
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void ChartAxis::setTitleText(const QString &title)
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{
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if (m_titleText != title) {
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m_titleText = title;
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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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}
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void ChartAxis::setTitlePen(const QPen &pen)
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{
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m_title->setPen(pen);
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}
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void ChartAxis::setTitleBrush(const QBrush &brush)
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{
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m_title->setBrush(brush);
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}
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void ChartAxis::setTitleFont(const QFont &font)
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{
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if(m_title->font() != font){
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m_title->setFont(font);
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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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}
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QFont ChartAxis::titleFont() const
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{
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return m_title->font();
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}
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void ChartAxis::hide()
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{
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setArrowVisibility(false);
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setGridVisibility(false);
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setLabelsVisibility(false);
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setShadesVisibility(false);
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}
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void ChartAxis::setGeometry(const QRectF &axis, const QRectF &grid)
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{
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m_gridRect = grid;
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m_axisRect = axis;
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if (isEmpty())
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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::axisSelected()
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{
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//TODO: axis clicked;
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}
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Qt::Orientation ChartAxis::orientation() const
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{
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return m_chartAxis->orientation();
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}
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Qt::Alignment ChartAxis::alignment() const
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{
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return m_chartAxis->alignment();
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}
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bool ChartAxis::isVisible()
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{
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return m_chartAxis->isVisible();
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}
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void ChartAxis::setLabels(const QStringList &labels)
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{
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m_labelsList = labels;
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}
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QStringList ChartAxis::createValueLabels(int ticks) const
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{
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Q_ASSERT(m_max > m_min);
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Q_ASSERT(ticks > 1);
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QStringList labels;
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int n = qMax(int(-qFloor(log10((m_max - m_min) / (ticks - 1)))), 0);
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n++;
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QValueAxis *axis = qobject_cast<QValueAxis *>(m_chartAxis);
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QString format = axis->labelFormat();
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if (format.isNull()) {
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for (int i = 0; i < ticks; i++) {
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qreal value = m_min + (i * (m_max - m_min) / (ticks - 1));
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labels << QString::number(value, 'f', n);
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}
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} else {
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QByteArray array = format.toLatin1();
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for (int i = 0; i < ticks; i++) {
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qreal value = m_min + (i * (m_max - m_min) / (ticks - 1));
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labels << QString().sprintf(array, value);
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}
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}
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return labels;
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}
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QStringList ChartAxis::createDateTimeLabels(const QString &format, int ticks) const
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{
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Q_ASSERT(m_max > m_min);
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Q_ASSERT(ticks > 1);
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QStringList labels;
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int n = qMax(int(-floor(log10((m_max - m_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 = m_min + (i * (m_max - m_min) / (ticks - 1));
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labels << QDateTime::fromMSecsSinceEpoch(value).toString(format);
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}
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return labels;
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}
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QSizeF ChartAxis::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
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|
{
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Q_UNUSED(which);
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|
Q_UNUSED(constraint);
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|
return QSizeF();
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|
}
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#include "moc_chartaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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