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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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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->children().size() == 0)
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m_arrow->addToGroup(new AxisItem(this, presenter()->rootItem()));
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if (m_intervalAxis && m_grid->children().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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m_labels->addToGroup(new QGraphicsSimpleTextItem(presenter()->rootItem()));
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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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foreach (QGraphicsItem *item , m_labels->childItems())
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static_cast<QGraphicsSimpleTextItem *>(item)->setFont(font);
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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.isValid() || m_gridRect.isEmpty() || qFuzzyIsNull(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 (!qFuzzyIsNull(m_min - min) || !qFuzzyIsNull(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::MinimumSize);
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QSizeF after = sizeHint(Qt::MinimumSize);
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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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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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}
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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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m_axisRect = QRect();
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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::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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if (!m_titleText.isNull()) {
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QFontMetrics fn(m_title->font());
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int size(0);
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if (orientation() == Qt::Horizontal)
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size = grid.width();
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else if (orientation() == Qt::Vertical)
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size = grid.height();
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if (fn.boundingRect(m_titleText).width() > size) {
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QString string = m_titleText + "...";
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while (fn.boundingRect(string).width() > size && string.length() > 3)
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string.remove(string.length() - 4, 1);
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m_title->setText(string);
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} else {
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m_title->setText(m_titleText);
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}
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QPointF center = grid.center() - m_title->boundingRect().center();
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if (orientation() == Qt::Horizontal) {
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m_title->setPos(center.x(), m_axisRect.bottom() - m_title->boundingRect().height());
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} else if (orientation() == Qt::Vertical) {
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m_title->setTransformOriginPoint(m_title->boundingRect().center());
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m_title->setRotation(270);
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m_title->setPos(m_axisRect.left() - m_title->boundingRect().width() / 2 + m_title->boundingRect().height() / 2, center.y());
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}
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}
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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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QSizeF ChartAxis::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
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{
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Q_UNUSED(constraint);
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QFontMetrics fn(m_title->font());
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QSizeF sh;
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if (m_titleText.isNull())
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return sh;
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switch (which) {
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case Qt::MinimumSize:
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if (orientation() == Qt::Horizontal)
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sh = QSizeF(fn.boundingRect("...").width(), fn.height());
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else if (orientation() == Qt::Vertical)
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sh = QSizeF(fn.height(), fn.boundingRect("...").width());
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break;
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case Qt::MaximumSize:
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case Qt::PreferredSize:
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if (orientation() == Qt::Horizontal)
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sh = QSizeF(fn.boundingRect(m_chartAxis->title()).width(), fn.height());
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else if (orientation() == Qt::Vertical)
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sh = QSizeF(fn.height(), fn.boundingRect(m_chartAxis->title()).width());
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break;
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default:
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break;
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}
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return sh;
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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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|
|
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|
QStringList labels;
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|
|
|
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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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|
|
|
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|
QValueAxis *axis = qobject_cast<QValueAxis *>(m_chartAxis);
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|
|
|
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|
QString format = axis->labelFormat();
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|
|
|
|
|
if (format.isNull()) {
|
|
|
for (int i = 0; i < ticks; i++) {
|
|
|
qreal value = m_min + (i * (m_max - m_min) / (ticks - 1));
|
|
|
labels << QString::number(value, 'f', n);
|
|
|
}
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|
|
} else {
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|
|
QByteArray array = format.toAscii();
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|
|
for (int i = 0; i < ticks; i++) {
|
|
|
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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|
|
|
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|
return labels;
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|
}
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|
|
|
|
|
QStringList ChartAxis::createDateTimeLabels(const QString &format, int ticks) const
|
|
|
{
|
|
|
Q_ASSERT(m_max > m_min);
|
|
|
Q_ASSERT(ticks > 1);
|
|
|
QStringList labels;
|
|
|
int n = qMax(int(-floor(log10((m_max - m_min) / (ticks - 1)))), 0);
|
|
|
n++;
|
|
|
for (int i = 0; i < ticks; i++) {
|
|
|
qreal value = m_min + (i * (m_max - m_min) / (ticks - 1));
|
|
|
labels << QDateTime::fromMSecsSinceEpoch(value).toString(format);
|
|
|
}
|
|
|
return labels;
|
|
|
}
|
|
|
|
|
|
#include "moc_chartaxis_p.cpp"
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|
|
|
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QTCOMMERCIALCHART_END_NAMESPACE
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|
