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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the 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 The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <private/abstractbarchartitem_p.h>
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#include <private/bar_p.h>
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#include <QtCharts/QBarSet>
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#include <private/qbarset_p.h>
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#include <QtCharts/QAbstractBarSeries>
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#include <private/qabstractbarseries_p.h>
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#include <QtCharts/QChart>
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#include <private/chartpresenter_p.h>
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#include <private/charttheme_p.h>
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#include <private/baranimation_p.h>
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#include <private/chartdataset_p.h>
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#include <QtGui/QPainter>
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#include <QtGui/QTextDocument>
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QT_CHARTS_BEGIN_NAMESPACE
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AbstractBarChartItem::AbstractBarChartItem(QAbstractBarSeries *series, QGraphicsItem* item) :
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ChartItem(series->d_func(),item),
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m_animation(0),
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m_series(series)
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{
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setFlag(ItemClipsChildrenToShape);
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setFlag(QGraphicsItem::ItemIsSelectable);
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connect(series->d_func(), SIGNAL(updatedLayout()), this, SLOT(handleLayoutChanged()));
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connect(series->d_func(), SIGNAL(updatedBars()), this, SLOT(handleUpdatedBars()));
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connect(series->d_func(), SIGNAL(labelsVisibleChanged(bool)), this, SLOT(handleLabelsVisibleChanged(bool)));
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connect(series->d_func(), SIGNAL(restructuredBars()), this, SLOT(handleDataStructureChanged()));
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connect(series, SIGNAL(visibleChanged()), this, SLOT(handleVisibleChanged()));
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connect(series, SIGNAL(opacityChanged()), this, SLOT(handleOpacityChanged()));
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connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(handleUpdatedBars()));
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connect(series, SIGNAL(labelsFormatChanged(QString)), this, SLOT(positionLabels()));
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connect(series, SIGNAL(labelsPositionChanged(QAbstractBarSeries::LabelsPosition)),
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this, SLOT(handleLabelsPositionChanged()));
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connect(series, SIGNAL(labelsAngleChanged(qreal)), this, SLOT(positionLabels()));
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setZValue(ChartPresenter::BarSeriesZValue);
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handleDataStructureChanged();
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handleVisibleChanged();
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handleUpdatedBars();
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}
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AbstractBarChartItem::~AbstractBarChartItem()
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{
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}
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void AbstractBarChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(painter);
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Q_UNUSED(option);
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Q_UNUSED(widget);
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}
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QRectF AbstractBarChartItem::boundingRect() const
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{
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return m_rect;
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}
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void AbstractBarChartItem::applyLayout(const QVector<QRectF> &layout)
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{
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QSizeF size = geometry().size();
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if (geometry().size().isValid()) {
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if (m_animation) {
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if (m_layout.count() == 0 || m_oldSize != size) {
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initializeLayout();
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m_oldSize = size;
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}
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m_animation->setup(m_layout, layout);
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presenter()->startAnimation(m_animation);
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} else {
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setLayout(layout);
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update();
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}
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}
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}
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void AbstractBarChartItem::setAnimation(BarAnimation *animation)
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{
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m_animation = animation;
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}
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void AbstractBarChartItem::setLayout(const QVector<QRectF> &layout)
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{
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if (layout.count() != m_bars.count())
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return;
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m_layout = layout;
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for (int i = 0; i < m_bars.count(); i++)
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m_bars.at(i)->setRect(layout.at(i));
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positionLabels();
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}
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//handlers
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void AbstractBarChartItem::handleDomainUpdated()
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{
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m_domainMinX = domain()->minX();
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m_domainMaxX = domain()->maxX();
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m_domainMinY = domain()->minY();
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m_domainMaxY = domain()->maxY();
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QRectF rect(QPointF(0,0),domain()->size());
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if(m_rect != rect){
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prepareGeometryChange();
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m_rect = rect;
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}
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handleLayoutChanged();
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}
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void AbstractBarChartItem::handleLayoutChanged()
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{
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if ((m_rect.width() <= 0) || (m_rect.height() <= 0))
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return; // rect size zero.
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QVector<QRectF> layout = calculateLayout();
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applyLayout(layout);
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handleUpdatedBars();
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}
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void AbstractBarChartItem::handleLabelsVisibleChanged(bool visible)
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{
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foreach (QGraphicsTextItem *label, m_labels)
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label->setVisible(visible);
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update();
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}
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void AbstractBarChartItem::handleDataStructureChanged()
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{
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foreach (QGraphicsItem *item, childItems())
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delete item;
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m_bars.clear();
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m_labels.clear();
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m_layout.clear();
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// Create new graphic items for bars
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for (int c = 0; c < m_series->d_func()->categoryCount(); c++) {
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for (int s = 0; s < m_series->count(); s++) {
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QBarSet *set = m_series->d_func()->barsetAt(s);
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// Bars
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Bar *bar = new Bar(set, c, this);
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m_bars.append(bar);
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connect(bar, SIGNAL(clicked(int,QBarSet*)), m_series, SIGNAL(clicked(int,QBarSet*)));
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connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), m_series, SIGNAL(hovered(bool, int, QBarSet*)));
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connect(bar, SIGNAL(pressed(int, QBarSet*)), m_series, SIGNAL(pressed(int, QBarSet*)));
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connect(bar, SIGNAL(released(int, QBarSet*)),
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m_series, SIGNAL(released(int, QBarSet*)));
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connect(bar, SIGNAL(doubleClicked(int, QBarSet*)),
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m_series, SIGNAL(doubleClicked(int, QBarSet*)));
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connect(bar, SIGNAL(clicked(int,QBarSet*)), set, SIGNAL(clicked(int)));
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connect(bar, SIGNAL(hovered(bool, int, QBarSet*)), set, SIGNAL(hovered(bool, int)));
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connect(bar, SIGNAL(pressed(int, QBarSet*)), set, SIGNAL(pressed(int)));
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connect(bar, SIGNAL(released(int, QBarSet*)), set, SIGNAL(released(int)));
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connect(bar, SIGNAL(doubleClicked(int, QBarSet*)), set, SIGNAL(doubleClicked(int)));
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// m_layout.append(QRectF(0, 0, 1, 1));
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// Labels
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QGraphicsTextItem *newLabel = new QGraphicsTextItem(this);
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newLabel->document()->setDocumentMargin(ChartPresenter::textMargin());
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m_labels.append(newLabel);
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}
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}
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if(themeManager()) themeManager()->updateSeries(m_series);
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handleLayoutChanged();
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handleVisibleChanged();
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}
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void AbstractBarChartItem::handleVisibleChanged()
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{
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bool visible = m_series->isVisible();
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if (visible)
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handleLabelsVisibleChanged(m_series->isLabelsVisible());
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else
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handleLabelsVisibleChanged(visible);
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foreach (QGraphicsItem *bar, m_bars)
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bar->setVisible(visible);
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}
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void AbstractBarChartItem::handleOpacityChanged()
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{
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foreach (QGraphicsItem *item, childItems())
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item->setOpacity(m_series->opacity());
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}
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void AbstractBarChartItem::handleUpdatedBars()
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{
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if (!m_series->d_func()->blockBarUpdate()) {
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// Handle changes in pen, brush, labels etc.
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int categoryCount = m_series->d_func()->categoryCount();
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int setCount = m_series->count();
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int itemIndex(0);
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static const QString valueTag(QLatin1String("@value"));
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for (int category = 0; category < categoryCount; category++) {
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for (int set = 0; set < setCount; set++) {
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QBarSetPrivate *barSet = m_series->d_func()->barsetAt(set)->d_ptr.data();
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Bar *bar = m_bars.at(itemIndex);
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bar->setPen(barSet->m_pen);
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bar->setBrush(barSet->m_brush);
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bar->update();
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QGraphicsTextItem *label = m_labels.at(itemIndex);
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QString valueLabel;
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if (presenter()) { // At startup presenter is not yet set, yet somehow update comes
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if (barSet->value(category) == 0) {
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label->setVisible(false);
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} else {
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label->setVisible(m_series->isLabelsVisible());
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if (m_series->labelsFormat().isEmpty()) {
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valueLabel = presenter()->numberToString(barSet->value(category));
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} else {
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valueLabel = m_series->labelsFormat();
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valueLabel.replace(valueTag,
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presenter()->numberToString(barSet->value(category)));
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}
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}
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}
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label->setHtml(valueLabel);
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label->setFont(barSet->m_labelFont);
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label->setDefaultTextColor(barSet->m_labelBrush.color());
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label->update();
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itemIndex++;
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}
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}
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}
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}
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void AbstractBarChartItem::handleLabelsPositionChanged()
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{
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positionLabels();
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}
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void AbstractBarChartItem::positionLabels()
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{
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// By default position labels on horizontal bar series
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// Vertical bar series overload positionLabels() to call positionLabelsVertical()
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QTransform transform;
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const qreal angle = m_series->d_func()->labelsAngle();
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if (angle != 0.0)
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transform.rotate(angle);
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for (int i = 0; i < m_layout.count(); i++) {
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QGraphicsTextItem *label = m_labels.at(i);
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QRectF labelRect = label->boundingRect();
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QPointF center = labelRect.center();
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qreal xPos = 0;
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qreal yPos = m_layout.at(i).center().y() - center.y();
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int xDiff = 0;
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if (angle != 0.0) {
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label->setTransformOriginPoint(center.x(), center.y());
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label->setRotation(m_series->d_func()->labelsAngle());
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qreal oldWidth = labelRect.width();
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labelRect = transform.mapRect(labelRect);
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xDiff = (labelRect.width() - oldWidth) / 2;
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}
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int offset = m_bars.at(i)->pen().width() / 2 + 2;
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switch (m_series->labelsPosition()) {
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case QAbstractBarSeries::LabelsCenter:
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xPos = m_layout.at(i).center().x() - center.x();
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break;
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case QAbstractBarSeries::LabelsInsideEnd:
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xPos = m_layout.at(i).right() - labelRect.width() - offset + xDiff;
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break;
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case QAbstractBarSeries::LabelsInsideBase:
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xPos = m_layout.at(i).left() + offset + xDiff;
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break;
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case QAbstractBarSeries::LabelsOutsideEnd:
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xPos = m_layout.at(i).right() + offset + xDiff;
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break;
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default:
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// Invalid position, never comes here
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break;
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}
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label->setPos(xPos, yPos);
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label->setZValue(zValue() + 1);
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}
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}
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void AbstractBarChartItem::positionLabelsVertical()
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{
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QTransform transform;
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const qreal angle = m_series->d_func()->labelsAngle();
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if (angle != 0.0)
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transform.rotate(angle);
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for (int i = 0; i < m_layout.count(); i++) {
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QGraphicsTextItem *label = m_labels.at(i);
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QRectF labelRect = label->boundingRect();
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QPointF center = labelRect.center();
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qreal xPos = m_layout.at(i).center().x() - center.x();
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qreal yPos = 0;
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int yDiff = 0;
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if (angle != 0.0) {
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label->setTransformOriginPoint(center.x(), center.y());
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label->setRotation(m_series->d_func()->labelsAngle());
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qreal oldHeight = labelRect.height();
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labelRect = transform.mapRect(labelRect);
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yDiff = (labelRect.height() - oldHeight) / 2;
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}
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int offset = m_bars.at(i)->pen().width() / 2 + 2;
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switch (m_series->labelsPosition()) {
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case QAbstractBarSeries::LabelsCenter:
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yPos = m_layout.at(i).center().y() - center.y();
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break;
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case QAbstractBarSeries::LabelsInsideEnd:
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yPos = m_layout.at(i).top() + offset + yDiff;
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break;
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case QAbstractBarSeries::LabelsInsideBase:
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yPos = m_layout.at(i).bottom() - labelRect.height() - offset + yDiff;
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break;
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case QAbstractBarSeries::LabelsOutsideEnd:
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yPos = m_layout.at(i).top() - labelRect.height() - offset + yDiff;
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break;
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default:
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// Invalid position, never comes here
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break;
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}
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label->setPos(xPos, yPos);
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label->setZValue(zValue() + 1);
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}
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}
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#include "moc_abstractbarchartitem_p.cpp"
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QT_CHARTS_END_NAMESPACE
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