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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, QGraphicsItem* item , bool intervalAxis)
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: ChartElement(item),
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m_axis(axis),
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m_labelsAngle(0),
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m_grid(new QGraphicsItemGroup(item)),
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m_arrow(new QGraphicsItemGroup(item)),
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m_shades(new QGraphicsItemGroup(item)),
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m_labels(new QGraphicsItemGroup(item)),
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m_title(new QGraphicsSimpleTextItem(item)),
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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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Q_ASSERT(item);
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//initial initialization
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m_arrow->setHandlesChildEvents(false);
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m_arrow->setZValue(ChartPresenter::AxisZValue);
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m_arrow->setVisible(m_axis->isLineVisible());
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m_labels->setZValue(ChartPresenter::AxisZValue);
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m_labels->setVisible(m_axis->labelsVisible());
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m_shades->setZValue(ChartPresenter::ShadesZValue);
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m_shades->setVisible(m_axis->shadesVisible());
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m_grid->setZValue(ChartPresenter::GridZValue);
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m_grid->setVisible(m_axis->isGridLineVisible());
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m_title->setZValue(ChartPresenter::GridZValue);
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connectSlots();
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setFlag(QGraphicsItem::ItemHasNoContents,true);
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}
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void ChartAxis::connectSlots()
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{
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QObject::connect(m_axis,SIGNAL(visibleChanged(bool)),this,SLOT(handleVisibleChanged(bool)));
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QObject::connect(m_axis,SIGNAL(lineVisibleChanged(bool)),this,SLOT(handleArrowVisibleChanged(bool)));
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QObject::connect(m_axis,SIGNAL(gridLineVisibleChanged(bool)),this,SLOT(handleGridVisibleChanged(bool)));
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QObject::connect(m_axis,SIGNAL(labelsVisibleChanged(bool)),this,SLOT(handleLabelsVisibleChanged(bool)));
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QObject::connect(m_axis,SIGNAL(shadesVisibleChanged(bool)),this,SLOT(handleShadesVisibleChanged(bool)));
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QObject::connect(m_axis,SIGNAL(labelsAngleChanged(int)),this,SLOT(handleLabelsAngleChanged(int)));
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QObject::connect(m_axis,SIGNAL(linePenChanged(const QPen&)),this,SLOT(handleArrowPenChanged(const QPen&)));
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QObject::connect(m_axis,SIGNAL(labelsPenChanged(const QPen&)),this,SLOT(handleLabelsPenChanged(const QPen&)));
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QObject::connect(m_axis,SIGNAL(labelsBrushChanged(const QBrush&)),this,SLOT(handleLabelsBrushChanged(const QBrush&)));
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QObject::connect(m_axis,SIGNAL(labelsFontChanged(const QFont&)),this,SLOT(handleLabelsFontChanged(const QFont&)));
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QObject::connect(m_axis,SIGNAL(gridLinePenChanged(const QPen&)),this,SLOT(handleGridPenChanged(const QPen&)));
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QObject::connect(m_axis,SIGNAL(shadesPenChanged(const QPen&)),this,SLOT(handleShadesPenChanged(const QPen&)));
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QObject::connect(m_axis,SIGNAL(shadesBrushChanged(const QBrush&)),this,SLOT(handleShadesBrushChanged(const QBrush&)));
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QObject::connect(m_axis,SIGNAL(titleTextChanged(const QString&)),this,SLOT(handleTitleTextChanged(const QString&)));
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QObject::connect(m_axis,SIGNAL(titleFontChanged(const QFont&)),this,SLOT(handleTitleFontChanged(const QFont&)));
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QObject::connect(m_axis,SIGNAL(titlePenChanged(const QPen&)),this,SLOT(handleTitlePenChanged(const QPen&)));
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QObject::connect(m_axis,SIGNAL(titleBrushChanged(const QBrush&)),this,SLOT(handleTitleBrushChanged(const QBrush&)));
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QObject::connect(m_axis->d_ptr.data(),SIGNAL(rangeChanged(qreal,qreal)),this,SLOT(handleRangeChanged(qreal,qreal)));
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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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QGraphicsLineItem* arrow = new ArrowItem(this, this);
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arrow->setPen(m_axis->linePen());
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m_arrow->addToGroup(arrow);
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}
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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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QGraphicsLineItem* item = new QGraphicsLineItem(this);
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item->setPen(m_axis->gridLinePen());
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m_grid->addToGroup(item);
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}
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}
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for (int i = 0; i < count; ++i) {
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QGraphicsLineItem* arrow = new QGraphicsLineItem(this);
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arrow->setPen(m_axis->linePen());
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QGraphicsLineItem* grid = new QGraphicsLineItem(this);
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grid->setPen(m_axis->gridLinePen());
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QGraphicsSimpleTextItem* label = new QGraphicsSimpleTextItem(this);
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label->setFont(m_axis->labelsFont());
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label->setPen(m_axis->labelsPen());
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label->setBrush(m_axis->labelsBrush());
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m_arrow->addToGroup(arrow);
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m_grid->addToGroup(grid);
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m_labels->addToGroup(label);
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if ((m_grid->childItems().size()) % 2 && m_grid->childItems().size() > 2){
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QGraphicsRectItem* shades = new QGraphicsRectItem(this);
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shades->setPen(m_axis->shadesPen());
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shades->setBrush(m_axis->shadesBrush());
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m_shades->addToGroup(shades);
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}
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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 (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::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(min(),max());
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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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qreal ChartAxis::min() const
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{
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return m_axis->d_ptr->min();
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}
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qreal ChartAxis::max() const
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{
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return m_axis->d_ptr->max();
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}
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QFont ChartAxis::font() const
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{
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return m_axis->labelsFont();
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}
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QFont ChartAxis::titleFont() const
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{
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return m_axis->titleFont();
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}
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QString ChartAxis::titleText() const
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{
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return m_axis->titleText();
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}
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void ChartAxis::axisSelected()
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{
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emit clicked();
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}
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Qt::Orientation ChartAxis::orientation() const
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{
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return m_axis->orientation();
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}
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Qt::Alignment ChartAxis::alignment() const
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{
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return m_axis->alignment();
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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(which);
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Q_UNUSED(constraint);
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return QSizeF();
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}
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//handlers
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void ChartAxis::handleArrowVisibleChanged(bool visible)
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{
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m_arrow->setVisible(visible);
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}
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void ChartAxis::handleGridVisibleChanged(bool visible)
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{
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m_grid->setVisible(visible);
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}
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void ChartAxis::handleLabelsVisibleChanged(bool visible)
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{
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m_labels->setVisible(visible);
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}
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void ChartAxis::handleShadesVisibleChanged(bool visible)
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{
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m_shades->setVisible(visible);
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}
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void ChartAxis::handleLabelsAngleChanged(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::handleLabelsPenChanged(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::handleLabelsBrushChanged(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::handleLabelsFontChanged(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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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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void ChartAxis::handleShadesBrushChanged(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::handleShadesPenChanged(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::handleArrowPenChanged(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::handleGridPenChanged(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::handleTitleTextChanged(const QString &title)
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{
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Q_UNUSED(title)
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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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void ChartAxis::handleTitlePenChanged(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::handleTitleBrushChanged(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::handleTitleFontChanged(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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void ChartAxis::handleVisibleChanged(bool visible)
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{
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setVisible(visible);
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}
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void ChartAxis::handleRangeChanged(qreal min, qreal max)
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{
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Q_UNUSED(min);
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Q_UNUSED(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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//helpers
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QStringList ChartAxis::createValueLabels(qreal min, qreal max, int ticks,const QString& format)
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{
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//TODO: Q_ASSERT(m_max > m_min);
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//TODO: Q_ASSERT(ticks > 1);
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QStringList labels;
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if(max <= min || ticks < 1){
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return labels;
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}
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int n = qMax(int(-qFloor(log10((max - min) / (ticks - 1)))), 0);
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n++;
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if (format.isNull()) {
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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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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 = min + (i * (max - min) / (ticks - 1));
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if (format.contains("d")
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|| format.contains("i")
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|| format.contains("c"))
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labels << QString().sprintf(array, (qint64)value);
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else if (format.contains("u")
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|| format.contains("o")
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|| format.contains("x", Qt::CaseInsensitive))
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labels << QString().sprintf(array, (quint64)value);
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else if (format.contains("f", Qt::CaseInsensitive)
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|| format.contains("e", Qt::CaseInsensitive)
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|| format.contains("g", Qt::CaseInsensitive))
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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(qreal min, qreal max,int ticks,const QString& format)
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{
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//TODO: Q_ASSERT(m_max > m_min);
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//TODO: Q_ASSERT(ticks > 1);
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QStringList labels;
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|
|
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if(max <= min || ticks < 1) {
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|
return labels;
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|
}
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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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labels << QDateTime::fromMSecsSinceEpoch(value).toString(format);
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|
}
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return labels;
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}
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#include "moc_chartaxis_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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